snakekeylogger | 536ef2de17913ef296a7c856530b09fcfa8d06821e4367528a67c192e6faa934

General

Target

Tvccjkahqr.exe
Size

17KB
MD5

0e83d9def9f0d8b855725f0e0136201c
SHA1

2846547d5f34abc3084192dbc6976484fae3c0a6
SHA256

cf635b3f6775fdf343dee0e703f1ebc24a740d4b1c76ad11e4118bcc1e636882
SHA512

cf274517ae75612af9bbcf08c69ecb98248098664559718f4bd76acd7d55945126d7b30a814c91ba239a88edc23fae34594ef479c9cc68361ca132a3f9aa98e6
SSDEEP

384:MFqF+L4TURdJJsjYa4uz+0mYKC9fn9/Awh:0RdJJsjiM+dCJ9oS

Score

10^/10

snakekeylogger collection keylogger persistence stealer

Malware Config

Extracted

Family

snakekeylogger

C2

https://api.telegram.org/bot6153811580:AAFDLNZoT-HelPNUs1JOyE22nWD-iLH7QKY/sendMessage?chat_id=5582419717

Signatures

Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
stealer keylogger snakekeylogger

Snake Keylogger payload 1 IoCs

resource	yara_rule
behavioral2/memory/2344-143-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	Tvccjkahqr.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mmmmmm = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\mmmmmm.exe\""	Tvccjkahqr.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
16	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3004 set thread context of 2344	3004	Tvccjkahqr.exe	83

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3732	powershell.exe
3732	powershell.exe
2344	MSBuild.exe
2344	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3004	Tvccjkahqr.exe
Token: SeDebugPrivilege	3732	powershell.exe
Token: SeDebugPrivilege	2344	MSBuild.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3004 wrote to memory of 3732	3004	Tvccjkahqr.exe	81
PID 3004 wrote to memory of 3732	3004	Tvccjkahqr.exe	81
PID 3004 wrote to memory of 3732	3004	Tvccjkahqr.exe	81
PID 3004 wrote to memory of 2344	3004	Tvccjkahqr.exe	83
PID 3004 wrote to memory of 2344	3004	Tvccjkahqr.exe	83
PID 3004 wrote to memory of 2344	3004	Tvccjkahqr.exe	83
PID 3004 wrote to memory of 2344	3004	Tvccjkahqr.exe	83
PID 3004 wrote to memory of 2344	3004	Tvccjkahqr.exe	83
PID 3004 wrote to memory of 2344	3004	Tvccjkahqr.exe	83
PID 3004 wrote to memory of 2344	3004	Tvccjkahqr.exe	83
PID 3004 wrote to memory of 2344	3004	Tvccjkahqr.exe	83

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\Tvccjkahqr.exe
"C:\Users\Admin\AppData\Local\Temp\Tvccjkahqr.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3004
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3732
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:2344

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2344-148-0x00000000060A0000-0x00000000060AA000-memory.dmp

Filesize
40KB

Download
memory/2344-147-0x00000000062E0000-0x0000000006372000-memory.dmp

Filesize
584KB

Download
memory/2344-146-0x0000000006110000-0x00000000062D2000-memory.dmp

Filesize
1.8MB

Download
memory/2344-145-0x0000000005080000-0x000000000511C000-memory.dmp

Filesize
624KB

Download
memory/2344-144-0x0000000005590000-0x0000000005B34000-memory.dmp

Filesize
5.6MB

Download
memory/2344-143-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3004-133-0x0000000006780000-0x00000000067A2000-memory.dmp

Filesize
136KB

Download
memory/3004-132-0x00000000008F0000-0x00000000008FA000-memory.dmp

Filesize
40KB

Download
memory/3732-136-0x0000000005120000-0x0000000005748000-memory.dmp

Filesize
6.2MB

Download
memory/3732-141-0x0000000006410000-0x000000000642A000-memory.dmp

Filesize
104KB

Download
memory/3732-140-0x0000000007770000-0x0000000007DEA000-memory.dmp

Filesize
6.5MB

Download
memory/3732-139-0x0000000005F10000-0x0000000005F2E000-memory.dmp

Filesize
120KB

Download
memory/3732-138-0x0000000005070000-0x00000000050D6000-memory.dmp

Filesize
408KB

Download
memory/3732-137-0x0000000005000000-0x0000000005066000-memory.dmp

Filesize
408KB

Download
memory/3732-135-0x0000000002930000-0x0000000002966000-memory.dmp

Filesize
216KB

Download

Analysis

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