snakekeylogger | e0fdf86fc02f69f4c0f9717f216bfc704a07926df45ac979e7aaf4bfa44f69f2

Analysis

max time kernel
43s
max time network
142s
platform
windows7_x64
resource
win7v20201028
submitted
26/01/2021, 15:48

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General

Target
9b465f73f661bc341cf2f0c2109c727b.exe
Size 1.2MB
Sample210126-9b71ldnjp2
SHA256 e0fdf86fc02f69f4c0f9717f216bfc704a07926df45ac979e7aaf4bfa44f69f2
MD5 9b465f73f661bc341cf2f0c2109c727b
SHA1 d050394cd55a107df5ae6b55e7c129d764cf5159
SHA512 4922650ca692341d343672e4361d549a26055aed647496330a44327cf66fba1b533ee9653e003c776a7bf85c5cfd65bff1b59eb624b8494b122bf2b98b65717d
MD5 SHA1 SHA512

Score

10^/10

snakekeylogger keylogger persistence ransomware spyware stealer

Malware Config

Signatures

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

Snake Keylogger Payload 2 IoCs

resource	yara_rule
behavioral1/memory/988-28-0x000000000046370E-mapping.dmp	family_snakekeylogger
behavioral1/memory/988-30-0x0000000000090000-0x00000000000F8000-memory.dmp	family_snakekeylogger

Executes dropped EXE 2 IoCs

pid	Process
1520	ron.exe
988	InstallUtil.exe

Loads dropped DLL 2 IoCs

pid	Process
1904	9b465f73f661bc341cf2f0c2109c727b.exe
1520	ron.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware

Data from Local System
T1005

Credentials in Files
T1081

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\bnye = "C:\\Users\\Admin\\ron.exe"	reg.exe

Looks up external IP address via web service 3 IoCs

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

flow	ioc
10	checkip.dyndns.org
15	freegeoip.app
16	freegeoip.app

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

System Information Discovery
T1082

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1520 set thread context of 988	1520	ron.exe	33

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
1904	9b465f73f661bc341cf2f0c2109c727b.exe
1904	9b465f73f661bc341cf2f0c2109c727b.exe
1904	9b465f73f661bc341cf2f0c2109c727b.exe
1904	9b465f73f661bc341cf2f0c2109c727b.exe
1904	9b465f73f661bc341cf2f0c2109c727b.exe
1520	ron.exe
1520	ron.exe
988	InstallUtil.exe
988	InstallUtil.exe
988	InstallUtil.exe
988	InstallUtil.exe
988	InstallUtil.exe
988	InstallUtil.exe
988	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1904	9b465f73f661bc341cf2f0c2109c727b.exe
Token: SeDebugPrivilege	1520	ron.exe
Token: SeDebugPrivilege	988	InstallUtil.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1904 wrote to memory of 432	1904	9b465f73f661bc341cf2f0c2109c727b.exe	29
PID 1904 wrote to memory of 432	1904	9b465f73f661bc341cf2f0c2109c727b.exe	29
PID 1904 wrote to memory of 432	1904	9b465f73f661bc341cf2f0c2109c727b.exe	29
PID 1904 wrote to memory of 432	1904	9b465f73f661bc341cf2f0c2109c727b.exe	29
PID 432 wrote to memory of 1492	432	cmd.exe	31
PID 432 wrote to memory of 1492	432	cmd.exe	31
PID 432 wrote to memory of 1492	432	cmd.exe	31
PID 432 wrote to memory of 1492	432	cmd.exe	31
PID 1904 wrote to memory of 1520	1904	9b465f73f661bc341cf2f0c2109c727b.exe	32
PID 1904 wrote to memory of 1520	1904	9b465f73f661bc341cf2f0c2109c727b.exe	32
PID 1904 wrote to memory of 1520	1904	9b465f73f661bc341cf2f0c2109c727b.exe	32
PID 1904 wrote to memory of 1520	1904	9b465f73f661bc341cf2f0c2109c727b.exe	32
PID 1520 wrote to memory of 988	1520	ron.exe	33
PID 1520 wrote to memory of 988	1520	ron.exe	33
PID 1520 wrote to memory of 988	1520	ron.exe	33
PID 1520 wrote to memory of 988	1520	ron.exe	33
PID 1520 wrote to memory of 988	1520	ron.exe	33
PID 1520 wrote to memory of 988	1520	ron.exe	33
PID 1520 wrote to memory of 988	1520	ron.exe	33
PID 1520 wrote to memory of 988	1520	ron.exe	33
PID 1520 wrote to memory of 988	1520	ron.exe	33
PID 1520 wrote to memory of 988	1520	ron.exe	33
PID 1520 wrote to memory of 988	1520	ron.exe	33
PID 1520 wrote to memory of 988	1520	ron.exe	33

C:\Users\Admin\AppData\Local\Temp\9b465f73f661bc341cf2f0c2109c727b.exe
"C:\Users\Admin\AppData\Local\Temp\9b465f73f661bc341cf2f0c2109c727b.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1904
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "bnye" /t REG_SZ /d "C:\Users\Admin\ron.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:432
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "bnye" /t REG_SZ /d "C:\Users\Admin\ron.exe"
    3⤵
    - Adds Run key to start application
    PID:1492
- C:\Users\Admin\ron.exe
  "C:\Users\Admin\ron.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1520
- - C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
    "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:988

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/988-34-0x0000000001FC0000-0x0000000001FC1000-memory.dmp

Download

memory/988-32-0x0000000000090000-0x0000000000092000-memory.dmp

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memory/988-31-0x0000000073470000-0x0000000073B5E000-memory.dmp

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memory/988-30-0x0000000000090000-0x00000000000F8000-memory.dmp

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memory/1520-17-0x0000000001270000-0x0000000001271000-memory.dmp

Download

memory/1520-19-0x0000000000430000-0x0000000000431000-memory.dmp

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memory/1520-23-0x00000000008D0000-0x00000000008DB000-memory.dmp

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memory/1520-24-0x0000000000D70000-0x0000000000D71000-memory.dmp

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memory/1520-16-0x00000000741A0000-0x000000007488E000-memory.dmp

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memory/1904-11-0x0000000004FE1000-0x0000000004FE2000-memory.dmp

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memory/1904-2-0x00000000741A0000-0x000000007488E000-memory.dmp

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memory/1904-8-0x0000000000520000-0x0000000000521000-memory.dmp

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memory/1904-7-0x00000000004B0000-0x00000000004CE000-memory.dmp

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memory/1904-5-0x0000000004FE0000-0x0000000004FE1000-memory.dmp

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memory/1904-3-0x0000000001370000-0x0000000001371000-memory.dmp

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