snakekeylogger | bfc51dc1a4d05287a8935713fd2875a76960b63d6dd852be6664b6aff198a4a0

General

Target

bfc51dc1a4d05287a8935713fd2875a76960b63d6dd852be6664b6aff198a4a0.exe
Size

1.1MB
MD5

43919d10c09cc339e383f3b62ad9b311
SHA1

8df3327bf214705a925d13e1c6216e9d019095c4
SHA256

bfc51dc1a4d05287a8935713fd2875a76960b63d6dd852be6664b6aff198a4a0
SHA512

129cbe917eb2501f3a0b93be8336cb052374ec5257c417616d3f47daebc918e6fd8e0093c18b236a0cb9ab49328afb4aa15d5dcba34970057e0b9f79a42788cb
SSDEEP

12288:oMCkI09GC5+mpMM6iM8ZSArLmMczCCnwqRkQ7zIz69rUv:RIkntMTPLALGCUwRQ7x9

Score

10^/10

snakekeylogger collection keylogger persistence stealer

Malware Config

Extracted

Family

snakekeylogger

Credentials

Protocol: smtp
Host:
us2.smtp.mailhostbox.com
Port:
587
Username:
[email protected]
Password:
doDHyw%0
Email To:
[email protected]

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\SysInfoTools-OLM\\Nulkemvlxg.exe\","	bfc51dc1a4d05287a8935713fd2875a76960b63d6dd852be6664b6aff198a4a0.exe

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

Snake Keylogger payload 5 IoCs

resource	yara_rule
behavioral1/memory/1800-70-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1800-69-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1800-72-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1800-74-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1800-76-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.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
6	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1072 set thread context of 1800	1072	bfc51dc1a4d05287a8935713fd2875a76960b63d6dd852be6664b6aff198a4a0.exe	29

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 2 IoCs

pid	Process
2036	powershell.exe
1800	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1072	bfc51dc1a4d05287a8935713fd2875a76960b63d6dd852be6664b6aff198a4a0.exe
Token: SeDebugPrivilege	2036	powershell.exe
Token: SeDebugPrivilege	1800	MSBuild.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1072 wrote to memory of 2036	1072	bfc51dc1a4d05287a8935713fd2875a76960b63d6dd852be6664b6aff198a4a0.exe	27
PID 1072 wrote to memory of 2036	1072	bfc51dc1a4d05287a8935713fd2875a76960b63d6dd852be6664b6aff198a4a0.exe	27
PID 1072 wrote to memory of 2036	1072	bfc51dc1a4d05287a8935713fd2875a76960b63d6dd852be6664b6aff198a4a0.exe	27
PID 1072 wrote to memory of 2036	1072	bfc51dc1a4d05287a8935713fd2875a76960b63d6dd852be6664b6aff198a4a0.exe	27
PID 1072 wrote to memory of 1800	1072	bfc51dc1a4d05287a8935713fd2875a76960b63d6dd852be6664b6aff198a4a0.exe	29
PID 1072 wrote to memory of 1800	1072	bfc51dc1a4d05287a8935713fd2875a76960b63d6dd852be6664b6aff198a4a0.exe	29
PID 1072 wrote to memory of 1800	1072	bfc51dc1a4d05287a8935713fd2875a76960b63d6dd852be6664b6aff198a4a0.exe	29
PID 1072 wrote to memory of 1800	1072	bfc51dc1a4d05287a8935713fd2875a76960b63d6dd852be6664b6aff198a4a0.exe	29
PID 1072 wrote to memory of 1800	1072	bfc51dc1a4d05287a8935713fd2875a76960b63d6dd852be6664b6aff198a4a0.exe	29
PID 1072 wrote to memory of 1800	1072	bfc51dc1a4d05287a8935713fd2875a76960b63d6dd852be6664b6aff198a4a0.exe	29
PID 1072 wrote to memory of 1800	1072	bfc51dc1a4d05287a8935713fd2875a76960b63d6dd852be6664b6aff198a4a0.exe	29
PID 1072 wrote to memory of 1800	1072	bfc51dc1a4d05287a8935713fd2875a76960b63d6dd852be6664b6aff198a4a0.exe	29
PID 1072 wrote to memory of 1800	1072	bfc51dc1a4d05287a8935713fd2875a76960b63d6dd852be6664b6aff198a4a0.exe	29

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\bfc51dc1a4d05287a8935713fd2875a76960b63d6dd852be6664b6aff198a4a0.exe
"C:\Users\Admin\AppData\Local\Temp\bfc51dc1a4d05287a8935713fd2875a76960b63d6dd852be6664b6aff198a4a0.exe"
1⤵
- Modifies WinLogon for persistence
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1072
- 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:2036
- 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:1800

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

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/1072-62-0x0000000002210000-0x0000000002250000-memory.dmp

Filesize
256KB

Download
memory/1072-55-0x0000000002210000-0x0000000002250000-memory.dmp

Filesize
256KB

Download
memory/1072-56-0x0000000005EA0000-0x0000000005FF4000-memory.dmp

Filesize
1.3MB

Download
memory/1072-57-0x0000000006160000-0x00000000061F2000-memory.dmp

Filesize
584KB

Download
memory/1072-54-0x0000000000A40000-0x0000000000B66000-memory.dmp

Filesize
1.1MB

Download
memory/1800-72-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1800-74-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1800-78-0x0000000004B60000-0x0000000004BA0000-memory.dmp

Filesize
256KB

Download
memory/1800-77-0x0000000004B60000-0x0000000004BA0000-memory.dmp

Filesize
256KB

Download
memory/1800-76-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1800-67-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1800-68-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1800-70-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1800-71-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/1800-69-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2036-65-0x0000000002780000-0x00000000027C0000-memory.dmp

Filesize
256KB

Download
memory/2036-60-0x0000000002780000-0x00000000027C0000-memory.dmp

Filesize
256KB

Download
memory/2036-61-0x0000000002780000-0x00000000027C0000-memory.dmp

Filesize
256KB

Download
memory/2036-63-0x0000000002780000-0x00000000027C0000-memory.dmp

Filesize
256KB

Download
memory/2036-64-0x0000000002780000-0x00000000027C0000-memory.dmp

Filesize
256KB

Download

Analysis

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