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 6 IoCs

resource	yara_rule
behavioral1/memory/1044-66-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1044-68-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1044-69-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1044-70-0x00000000004206EE-mapping.dmp	family_snakekeylogger
behavioral1/memory/1044-72-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1044-74-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\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-1-5-21-999675638-2867687379-27515722-1000\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
7	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1344 set thread context of 1044	1344	Tvccjkahqr.exe	28

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 3 IoCs

pid	Process
1936	powershell.exe
1044	MSBuild.exe
1044	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1344	Tvccjkahqr.exe
Token: SeDebugPrivilege	1936	powershell.exe
Token: SeDebugPrivilege	1044	MSBuild.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1344 wrote to memory of 1936	1344	Tvccjkahqr.exe	26
PID 1344 wrote to memory of 1936	1344	Tvccjkahqr.exe	26
PID 1344 wrote to memory of 1936	1344	Tvccjkahqr.exe	26
PID 1344 wrote to memory of 1936	1344	Tvccjkahqr.exe	26
PID 1344 wrote to memory of 1044	1344	Tvccjkahqr.exe	28
PID 1344 wrote to memory of 1044	1344	Tvccjkahqr.exe	28
PID 1344 wrote to memory of 1044	1344	Tvccjkahqr.exe	28
PID 1344 wrote to memory of 1044	1344	Tvccjkahqr.exe	28
PID 1344 wrote to memory of 1044	1344	Tvccjkahqr.exe	28
PID 1344 wrote to memory of 1044	1344	Tvccjkahqr.exe	28
PID 1344 wrote to memory of 1044	1344	Tvccjkahqr.exe	28
PID 1344 wrote to memory of 1044	1344	Tvccjkahqr.exe	28
PID 1344 wrote to memory of 1044	1344	Tvccjkahqr.exe	28

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\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⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1344
- 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:1936
- 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:1044

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1044-69-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1044-66-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1044-74-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1044-72-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1044-63-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1044-68-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1044-64-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1344-55-0x0000000074F41000-0x0000000074F43000-memory.dmp

Filesize
8KB

Download
memory/1344-54-0x0000000000880000-0x000000000088A000-memory.dmp

Filesize
40KB

Download
memory/1344-57-0x00000000004D0000-0x00000000004E2000-memory.dmp

Filesize
72KB

Download
memory/1344-56-0x0000000005EF0000-0x0000000005F9C000-memory.dmp

Filesize
688KB

Download
memory/1936-61-0x000000006F120000-0x000000006F6CB000-memory.dmp

Filesize
5.7MB

Download
memory/1936-62-0x000000006F120000-0x000000006F6CB000-memory.dmp

Filesize
5.7MB

Download
memory/1936-60-0x000000006F120000-0x000000006F6CB000-memory.dmp

Filesize
5.7MB

Download

Analysis

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