86 lines
5.3 KiB
Markdown
86 lines
5.3 KiB
Markdown
# [Update] Malware analysis on Gamaredon APT campaign (06-08-19)
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## Table of Contents
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* [Malware analysis](#Malware-analysis)
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+ [Analysis of the TTPs](#Initial-vector)
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+ [Cyber kill chain](#Initial-vector)
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* [Cyber Threat Intel](#Cyber-Kill-Chain)
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* [IOC](#IOC)
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* [References MITRE ATT&CK Matrix](#Ref-MITRE-ATTACK)
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* [Links](#Links)
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+ [Original Tweet](#Original-Tweet)
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+ [Ref previous analysis](#Documents)
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+ [Link Anyrun](#Links-Anyrun)
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## Malware-analysis <a name="Malware-analysis"></a>
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### Analysis of the TTPs <a name="Initial-vector"></a>
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###### Like the last sample analysed, the new samples uses an SFX archive for extract the files and execute the fake document and the payload.
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###### We can see again the cmd file extracted by the SFX archive. The randomization of the obfuscated strings has been by the algorithm in the archive.
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###### Also this use the function GetCommandLineA for getting a pointer to the command-line string for the current process.
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### Cyber kill chain <a name="Cyber-Kill-Chain"></a>
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###### The process graph resume the cyber kill chain used by the attacker. We can observe that the TTPs are the same.
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## Cyber Threat Intel <a name="Cyber-Threat-Intel"></a>
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###### Both latest spotted samples have the same C2 hosted in a Russia provider.
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###### The domain seems don't be registered on list of the domain added.
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###### Like the last sample, this comes at a crisis period between Russia and Ukraine, Ukraine rest the main target of Gamaredon group.
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## References MITRE ATT&CK Matrix <a name="Ref-MITRE-ATTACK"></a>
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###### List of all the references with MITRE ATT&CK Matrix
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|Enterprise tactics|Technics used|Ref URL|
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| :---------------: |:-------------| :------------- |
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|Execution|T1059 - Starts CMD.EXE for commands execution<br>T1106 - Execution through API<br>T1053 - Scheduled Task<br>T1064 - Scripting|https://attack.mitre.org/techniques/T1059<br>https://attack.mitre.org/techniques/T1106<br>https://attack.mitre.org/techniques/T1053<br>https://attack.mitre.org/techniques/T1064|
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|Persistence|T1060 - Registry Run Keys / Startup Folder<br>T1053 - Scheduled Task|https://attack.mitre.org/techniques/T1060<br>https://attack.mitre.org/techniques/T1053|
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|Privilege Escalation|T1053 - Scheduled Task|https://attack.mitre.org/techniques/T1053|
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|Defense Evasion|T1112 - Modify Registry<br> T1064 - Scripting|https://attack.mitre.org/techniques/T1112<br>https://attack.mitre.org/techniques/T1064|
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|Discovery|T1012 - Query Registry|https://attack.mitre.org/techniques/T1012|
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## Indicators Of Compromise (IOC) <a name="IOC"></a>
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###### List of all the Indicators Of Compromise (IOC)
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| Indicator | Description|
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| ------------- |:-------------|
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|1426f88edaf207d2c62422f343209fae|204da6b16288cf94890ab036836a27a8163bef259092b3eb21c99e52144256e8|
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|a.exe|a94b4e7ecd9482b0e610b2521727715d1d401d775617512514bdd2e0b9351e06|
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|23379.txt|a48ad33695a44de887bba8f2f3174fd8fb01a46a19e3ec9078b0118647ccf599|
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|18535.cmd|29389990ce789001c337e98abd3ff49b3c80dd34e66033c62732e4af89e13f4f|
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|21826.cmd|825deff8a0d7635b2e45ac2d7ad09c80e45cd380a0e54831910e0bb62063d20b|
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|QoceoIJ.vbs|37b05d4273e3e0a558d431ed3cc443d2a93001b121c4aae9fc8f9778a5578316|
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|zZBwUAc.vbs|f29d970f4ace8516a254515be3b3adf14ebf9651c0ee1aecaddd68a3d12c0315|
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|PowerShellCertificates_C4BA3647.ps1|6de997b9bbfa09def80109108def78a42bc16820c681d12210011ea5d1a86321|
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|Document.docx|2a5c7e6e9347f74e8a5d288274117cb638ff0305a3e46813d64316f869d5e7ec|
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|document-listing.ddns.net|Domain C2|
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|188.225.24.161|IP C2|
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|http[:]//document-listing.ddns.net/|URL request|
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###### This can be exported as JSON format [Export in JSON](https://raw.githubusercontent.com/StrangerealIntel/CyberThreatIntel/master/Russia/APT/Gamaredon/16-08-19/IOC_Gamaredon_16-08-19.json)
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## Links <a name="Links"></a>
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* Original tweet: https://twitter.com/RedDrip7/status/1161900271477252101 <a name="Original-Tweet"></a>
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* Ref previous analysis: [Gamaradon sample analysis 06-08-19](https://github.com/StrangerealIntel/CyberThreatIntel/blob/master/Russia/APT/Gamaredon/06-08-19/Malware%20analysis%2006-08-19.md)<a name="Documents"></a>
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* Anyrun Links: <a name="Links-Anyrun"></a>
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+ [1426f88edaf207d2c62422f343209fae](https://app.any.run/tasks/8b718d6a-04c4-44fc-9afd-e0cffd1b626a)
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+ [a.exe](https://app.any.run/tasks/58d83fbe-36c9-4fad-9e21-9140207b6152)
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* Another analysis: [SFX analysis by ThreatRecon Team](https://threatrecon.nshc.net/2019/06/25/sectorc08-multi-layered-sfx-recent-campaigns-target-ukraine/)
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