snakekeylogger | 9bb2525c48049ffd05b8ad6a39a89245b6a4de4914275fcfad2beee8bfaa714d

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7v20201028
submitted
29/01/2021, 16:34

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General

Target
IMG_058741601.exe
Size 732KB
Sample210129-8tkfsg2bca
SHA256 9bb2525c48049ffd05b8ad6a39a89245b6a4de4914275fcfad2beee8bfaa714d
MD5 59380235fed3c5300b01b07ca70148ca
SHA1 81e1f14e30fa437a464d1e068e1963a14212c623
SHA512 4bce9d19a8388a3915861b3daa125be6611f8532187a9266bc08425e2dbd5f600c429ed252ea1486daf43f64e665241404378353c06e42d100659ee28807b451
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 3 IoCs

resource	yara_rule
behavioral1/memory/688-27-0x0000000000400000-0x0000000000468000-memory.dmp	family_snakekeylogger
behavioral1/memory/688-28-0x0000000000463A9E-mapping.dmp	family_snakekeylogger
behavioral1/memory/688-31-0x0000000000400000-0x0000000000468000-memory.dmp	family_snakekeylogger

Executes dropped EXE 2 IoCs

pid	Process
1456	mnoi.exe
688	InstallUtil.exe

Loads dropped DLL 2 IoCs

pid	Process
1096	IMG_058741601.exe
1456	mnoi.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\etsb = "C:\\Users\\Admin\\mnoi.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
17	freegeoip.app
11	checkip.dyndns.org
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 1456 set thread context of 688	1456	mnoi.exe	33

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
1096	IMG_058741601.exe
1096	IMG_058741601.exe
1096	IMG_058741601.exe
1096	IMG_058741601.exe
1096	IMG_058741601.exe
1456	mnoi.exe
1456	mnoi.exe
688	InstallUtil.exe
688	InstallUtil.exe
688	InstallUtil.exe
688	InstallUtil.exe
688	InstallUtil.exe
688	InstallUtil.exe
688	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1096	IMG_058741601.exe
Token: SeDebugPrivilege	1456	mnoi.exe
Token: SeDebugPrivilege	688	InstallUtil.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1096 wrote to memory of 1740	1096	IMG_058741601.exe	29
PID 1096 wrote to memory of 1740	1096	IMG_058741601.exe	29
PID 1096 wrote to memory of 1740	1096	IMG_058741601.exe	29
PID 1096 wrote to memory of 1740	1096	IMG_058741601.exe	29
PID 1740 wrote to memory of 1216	1740	cmd.exe	31
PID 1740 wrote to memory of 1216	1740	cmd.exe	31
PID 1740 wrote to memory of 1216	1740	cmd.exe	31
PID 1740 wrote to memory of 1216	1740	cmd.exe	31
PID 1096 wrote to memory of 1456	1096	IMG_058741601.exe	32
PID 1096 wrote to memory of 1456	1096	IMG_058741601.exe	32
PID 1096 wrote to memory of 1456	1096	IMG_058741601.exe	32
PID 1096 wrote to memory of 1456	1096	IMG_058741601.exe	32
PID 1456 wrote to memory of 688	1456	mnoi.exe	33
PID 1456 wrote to memory of 688	1456	mnoi.exe	33
PID 1456 wrote to memory of 688	1456	mnoi.exe	33
PID 1456 wrote to memory of 688	1456	mnoi.exe	33
PID 1456 wrote to memory of 688	1456	mnoi.exe	33
PID 1456 wrote to memory of 688	1456	mnoi.exe	33
PID 1456 wrote to memory of 688	1456	mnoi.exe	33
PID 1456 wrote to memory of 688	1456	mnoi.exe	33
PID 1456 wrote to memory of 688	1456	mnoi.exe	33
PID 1456 wrote to memory of 688	1456	mnoi.exe	33
PID 1456 wrote to memory of 688	1456	mnoi.exe	33
PID 1456 wrote to memory of 688	1456	mnoi.exe	33

C:\Users\Admin\AppData\Local\Temp\IMG_058741601.exe
"C:\Users\Admin\AppData\Local\Temp\IMG_058741601.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1096
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "etsb" /t REG_SZ /d "C:\Users\Admin\mnoi.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1740
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "etsb" /t REG_SZ /d "C:\Users\Admin\mnoi.exe"
    3⤵
    - Adds Run key to start application
    PID:1216
- C:\Users\Admin\mnoi.exe
  "C:\Users\Admin\mnoi.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1456
- - 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:688

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/688-30-0x0000000074CF0000-0x00000000753DE000-memory.dmp

Download

memory/688-31-0x0000000000400000-0x0000000000468000-memory.dmp

Download

memory/688-33-0x0000000004910000-0x0000000004911000-memory.dmp

Download

memory/688-27-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/1096-11-0x00000000009F1000-0x00000000009F2000-memory.dmp

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memory/1096-2-0x0000000074CF0000-0x00000000753DE000-memory.dmp

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memory/1096-8-0x00000000008E0000-0x00000000008E1000-memory.dmp

Download

memory/1096-7-0x0000000000870000-0x000000000088E000-memory.dmp

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memory/1096-5-0x00000000009F0000-0x00000000009F1000-memory.dmp

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memory/1096-3-0x0000000000F50000-0x0000000000F51000-memory.dmp

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memory/1456-24-0x0000000000550000-0x0000000000551000-memory.dmp

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memory/1456-23-0x00000000007E0000-0x00000000007EB000-memory.dmp

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memory/1456-19-0x0000000004230000-0x0000000004231000-memory.dmp

Download

memory/1456-17-0x0000000000800000-0x0000000000801000-memory.dmp

Download

memory/1456-16-0x0000000074CF0000-0x00000000753DE000-memory.dmp

Download