snakekeylogger | 853384b95098ae2591328fad181230b71e49dc55935af66056d6e505500ab8fa

General

Target

$PLUGINSDIR/oezmnaybrma.dll
Size

20KB
MD5

e3e7ada7af7f7560a909eee23348cce6
SHA1

8d41ded7481ee7f95816515c367116782932ef13
SHA256

cba0d722c1e33b61881ac05c0db2cf088dd9702e76df979ab40f8c0dc1c053ab
SHA512

8f80d8cc74c0add6a92fc4a3549db2633a1c71e10e192f12ca8fd8f223a99455f24d2aab441d3dce3fddd789b769b446613991cb54906deacc930e2f7e8d46f0
SSDEEP

384:h8fmk9RJD7f+aPjoZ357iLezOo9qkT/4:h8flRJOZmBoE

Score

10^/10

snakekeylogger discovery keylogger 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
behavioral3/memory/2176-1-0x0000000000400000-0x0000000000457000-memory.dmp	family_snakekeylogger
behavioral3/memory/2176-3-0x0000000000400000-0x0000000000457000-memory.dmp	family_snakekeylogger
behavioral3/memory/2176-5-0x0000000000400000-0x0000000000457000-memory.dmp	family_snakekeylogger

Snakekeylogger family
snakekeylogger

Blocklisted process makes network request 3 IoCs

flow	pid	Process
5	2176	rundll32.exe
7	2176	rundll32.exe
9	2176	rundll32.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
6	freegeoip.app
7	freegeoip.app
4	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2336 set thread context of 2176	2336	rundll32.exe	32

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dw20.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2176	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2176	rundll32.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2032 wrote to memory of 2336	2032	rundll32.exe	31
PID 2032 wrote to memory of 2336	2032	rundll32.exe	31
PID 2032 wrote to memory of 2336	2032	rundll32.exe	31
PID 2032 wrote to memory of 2336	2032	rundll32.exe	31
PID 2032 wrote to memory of 2336	2032	rundll32.exe	31
PID 2032 wrote to memory of 2336	2032	rundll32.exe	31
PID 2032 wrote to memory of 2336	2032	rundll32.exe	31
PID 2336 wrote to memory of 2176	2336	rundll32.exe	32
PID 2336 wrote to memory of 2176	2336	rundll32.exe	32
PID 2336 wrote to memory of 2176	2336	rundll32.exe	32
PID 2336 wrote to memory of 2176	2336	rundll32.exe	32
PID 2336 wrote to memory of 2176	2336	rundll32.exe	32
PID 2336 wrote to memory of 2176	2336	rundll32.exe	32
PID 2336 wrote to memory of 2176	2336	rundll32.exe	32
PID 2336 wrote to memory of 2176	2336	rundll32.exe	32
PID 2336 wrote to memory of 2176	2336	rundll32.exe	32
PID 2336 wrote to memory of 2176	2336	rundll32.exe	32
PID 2336 wrote to memory of 2176	2336	rundll32.exe	32
PID 2336 wrote to memory of 2176	2336	rundll32.exe	32
PID 2336 wrote to memory of 2176	2336	rundll32.exe	32
PID 2336 wrote to memory of 2176	2336	rundll32.exe	32
PID 2176 wrote to memory of 2944	2176	rundll32.exe	33
PID 2176 wrote to memory of 2944	2176	rundll32.exe	33
PID 2176 wrote to memory of 2944	2176	rundll32.exe	33
PID 2176 wrote to memory of 2944	2176	rundll32.exe	33

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\oezmnaybrma.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2032
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\oezmnaybrma.dll,#1
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2336
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\oezmnaybrma.dll,#1
    3⤵
    - Blocklisted process makes network request
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2176
  - - C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
      dw20.exe -x -s 588
      4⤵
      System Location Discovery: System Language Discovery
      PID:2944

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2176-1-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/2176-3-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/2176-5-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/2176-6-0x00000000748F0000-0x000000007497D000-memory.dmp

Filesize
564KB

Download
memory/2176-7-0x00000000748F0000-0x000000007497D000-memory.dmp

Filesize
564KB

Download
memory/2176-8-0x00000000748F0000-0x000000007497D000-memory.dmp

Filesize
564KB

Download
memory/2176-9-0x00000000748F0000-0x000000007497D000-memory.dmp

Filesize
564KB

Download
memory/2176-11-0x00000000748F0000-0x000000007497D000-memory.dmp

Filesize
564KB

Download
memory/2336-0-0x00000000748F5000-0x00000000748F7000-memory.dmp

Filesize
8KB

Download
memory/2944-10-0x0000000001DB0000-0x0000000001DB1000-memory.dmp

Filesize
4KB

Download

Analysis

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