snakekeylogger | e3a15c6736497a59a062eb612e69a68938b55266cdaa9dd03b20f3d3f4b784ce

General

Target

Trmczi.exe
Size

390KB
MD5

ca67abf1fa1beb803fc9ec496c68fe2e
SHA1

8f12daafc220b31bc9fa734fc8d9bf2075e1a765
SHA256

e3a15c6736497a59a062eb612e69a68938b55266cdaa9dd03b20f3d3f4b784ce
SHA512

f32812b6640b72d1556e64d92cf2ff5e22df0a2d36980ac3c7886bb11d8a3649c6bca0abb260620c4b35f4c80a8aa78f4119a6cf445b04c89a523796fa4e6ef9
SSDEEP

6144:1SItb2zQLw8XgTQedTHbLYKWYse50nE3QwYS5uIFXMgZTbc3OBZFNA9668NbZ+fa:1VLJDiwKzmwYS5sgZTbc3OBZFfbZ+fa

Score

10^/10

snakekeylogger collection keylogger persistence stealer

Malware Config

Extracted

Family

snakekeylogger

C2

https://api.telegram.org/bot6563963046:AAGlyBHZ_ALQCHnOUZcYa0FHqP2za43gVaM/sendMessage?chat_id=5262627523

Signatures

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

Snake Keylogger payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3800-9-0x0000000140000000-0x0000000140022000-memory.dmp	family_snakekeylogger
behavioral2/memory/3800-13-0x000001E99F0E0000-0x000001E99F0F0000-memory.dmp	family_snakekeylogger

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2890696111-2332180956-3312704074-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-2890696111-2332180956-3312704074-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-2890696111-2332180956-3312704074-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Trmczi.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2890696111-2332180956-3312704074-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\dddddd = "C:\\Users\\Admin\\AppData\\Roaming\\dddddd.exe"	Trmczi.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.

Processes:

flow ioc

44 checkip.dyndns.org
Suspicious use of SetThreadContext 1 IoCs

Processes:

Trmczi.exe

description pid process target process

PID 4164 set thread context of 3800 4164 Trmczi.exe MSBuild.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

MSBuild.exe

pid process

3800 MSBuild.exe
3800 MSBuild.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Trmczi.exeMSBuild.exe

description pid process

Token: SeDebugPrivilege 4164 Trmczi.exe
Token: SeDebugPrivilege 3800 MSBuild.exe

flow	ioc
44	checkip.dyndns.org

description	pid	process	target process
PID 4164 set thread context of 3800	4164	Trmczi.exe	MSBuild.exe

pid	process
3800	MSBuild.exe
3800	MSBuild.exe

description	pid	process
Token: SeDebugPrivilege	4164	Trmczi.exe
Token: SeDebugPrivilege	3800	MSBuild.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

Trmczi.exe

description	pid	process	target process
PID 4164 wrote to memory of 3800	4164	Trmczi.exe	MSBuild.exe
PID 4164 wrote to memory of 3800	4164	Trmczi.exe	MSBuild.exe
PID 4164 wrote to memory of 3800	4164	Trmczi.exe	MSBuild.exe
PID 4164 wrote to memory of 3800	4164	Trmczi.exe	MSBuild.exe
PID 4164 wrote to memory of 3800	4164	Trmczi.exe	MSBuild.exe
PID 4164 wrote to memory of 3800	4164	Trmczi.exe	MSBuild.exe

outlook_office_path 1 IoCs

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2890696111-2332180956-3312704074-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

outlook_win_path 1 IoCs

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2890696111-2332180956-3312704074-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\Trmczi.exe
"C:\Users\Admin\AppData\Local\Temp\Trmczi.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4164

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:3800

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3800-14-0x000001E99F030000-0x000001E99F080000-memory.dmp

Filesize
320KB

Download
memory/3800-12-0x00007FFBD84E0000-0x00007FFBD8FA1000-memory.dmp

Filesize
10.8MB

Download
memory/3800-17-0x000001E99F0E0000-0x000001E99F0F0000-memory.dmp

Filesize
64KB

Download
memory/3800-16-0x00007FFBD84E0000-0x00007FFBD8FA1000-memory.dmp

Filesize
10.8MB

Download
memory/3800-9-0x0000000140000000-0x0000000140022000-memory.dmp

Filesize
136KB

Download
memory/3800-15-0x000001E9B7E40000-0x000001E9B8002000-memory.dmp

Filesize
1.8MB

Download
memory/3800-13-0x000001E99F0E0000-0x000001E99F0F0000-memory.dmp

Filesize
64KB

Download
memory/4164-6-0x00007FFBD84E0000-0x00007FFBD8FA1000-memory.dmp

Filesize
10.8MB

Download
memory/4164-4-0x0000026C3F300000-0x0000026C3F336000-memory.dmp

Filesize
216KB

Download
memory/4164-7-0x0000026C57D60000-0x0000026C57D70000-memory.dmp

Filesize
64KB

Download
memory/4164-11-0x00007FFBD84E0000-0x00007FFBD8FA1000-memory.dmp

Filesize
10.8MB

Download
memory/4164-1-0x00007FFBD84E0000-0x00007FFBD8FA1000-memory.dmp

Filesize
10.8MB

Download
memory/4164-0-0x0000026C3D5F0000-0x0000026C3D656000-memory.dmp

Filesize
408KB

Download
memory/4164-5-0x0000026C57F70000-0x0000026C57FBC000-memory.dmp

Filesize
304KB

Download
memory/4164-3-0x0000026C3F270000-0x0000026C3F2B8000-memory.dmp

Filesize
288KB

Download
memory/4164-2-0x0000026C57D60000-0x0000026C57D70000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads