snakekeylogger | 539ee7af02fcbd28659831dd774581f76ee66ca6238d12af286158f2f343f3b8

General

Target

539ee7af02fcbd28659831dd774581f76ee66ca6238d12af286158f2f343f3b8.exe
Size

2.1MB
MD5

022dbaa1df24d488b03ecb058a521613
SHA1

9f12948c741b6b27cce58d4cd804a2f988feddf2
SHA256

539ee7af02fcbd28659831dd774581f76ee66ca6238d12af286158f2f343f3b8
SHA512

1d23c5d6a8b384e2c746865da221a14d6cb7f9260597c4785ae527798e9215027bbc089b5214389ff2bbae180ba6cbec547df6c5d901ff6a56d2fb4909e50880
SSDEEP

49152:0l328U2yfZrnJhlp9tHfYoEaTSiz23THT3WSMpDgF/qB0Rj6KIeVSc/zui:a30DfJJhX/LEQkF/qBk6K2c/ii

Score

10^/10

snakekeylogger discovery keylogger stealer upx

Malware Config

Extracted

Family

snakekeylogger

C2

https://api.telegram.org/bot1628099890:AAEoyPqXzUZV0NK78yRGbDMLJqRw0vcASbg/sendMessage?chat_id=1217600190

Signatures

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

Snake Keylogger payload 1 IoCs

resource	yara_rule
behavioral2/memory/2004-47-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger

Snakekeylogger family
snakekeylogger

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	539ee7af02fcbd28659831dd774581f76ee66ca6238d12af286158f2f343f3b8.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\caulds.vbs	caulds.exe

Executes dropped EXE 3 IoCs

pid	Process
4576	EmbeddedExe1.exe
620	EmbeddedExe2.exe
532	caulds.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
13	checkip.dyndns.org
15	reallyfreegeoip.org
17	reallyfreegeoip.org

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/4576-37-0x00000000001D0000-0x000000000030E000-memory.dmp	autoit_exe
behavioral2/memory/532-49-0x0000000000840000-0x000000000097E000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 532 set thread context of 2004	532	caulds.exe	86

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x000f000000023bc3-6.dat	upx
behavioral2/memory/4576-13-0x00000000001D0000-0x000000000030E000-memory.dmp	upx
behavioral2/memory/532-35-0x0000000000840000-0x000000000097E000-memory.dmp	upx
behavioral2/memory/4576-37-0x00000000001D0000-0x000000000030E000-memory.dmp	upx
behavioral2/memory/532-49-0x0000000000840000-0x000000000097E000-memory.dmp	upx

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	choice.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EmbeddedExe1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	caulds.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2004	RegSvcs.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
532	caulds.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2004	RegSvcs.exe

Suspicious use of FindShellTrayWindow 6 IoCs

pid	Process
4576	EmbeddedExe1.exe
4576	EmbeddedExe1.exe
4576	EmbeddedExe1.exe
532	caulds.exe
532	caulds.exe
532	caulds.exe

Suspicious use of SendNotifyMessage 6 IoCs

pid	Process
4576	EmbeddedExe1.exe
4576	EmbeddedExe1.exe
4576	EmbeddedExe1.exe
532	caulds.exe
532	caulds.exe
532	caulds.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2024 wrote to memory of 4576	2024	539ee7af02fcbd28659831dd774581f76ee66ca6238d12af286158f2f343f3b8.exe	83
PID 2024 wrote to memory of 4576	2024	539ee7af02fcbd28659831dd774581f76ee66ca6238d12af286158f2f343f3b8.exe	83
PID 2024 wrote to memory of 4576	2024	539ee7af02fcbd28659831dd774581f76ee66ca6238d12af286158f2f343f3b8.exe	83
PID 2024 wrote to memory of 620	2024	539ee7af02fcbd28659831dd774581f76ee66ca6238d12af286158f2f343f3b8.exe	84
PID 2024 wrote to memory of 620	2024	539ee7af02fcbd28659831dd774581f76ee66ca6238d12af286158f2f343f3b8.exe	84
PID 4576 wrote to memory of 532	4576	EmbeddedExe1.exe	85
PID 4576 wrote to memory of 532	4576	EmbeddedExe1.exe	85
PID 4576 wrote to memory of 532	4576	EmbeddedExe1.exe	85
PID 532 wrote to memory of 2004	532	caulds.exe	86
PID 532 wrote to memory of 2004	532	caulds.exe	86
PID 532 wrote to memory of 2004	532	caulds.exe	86
PID 532 wrote to memory of 2004	532	caulds.exe	86
PID 2004 wrote to memory of 2380	2004	RegSvcs.exe	87
PID 2004 wrote to memory of 2380	2004	RegSvcs.exe	87
PID 2004 wrote to memory of 2380	2004	RegSvcs.exe	87
PID 2380 wrote to memory of 2972	2380	cmd.exe	89
PID 2380 wrote to memory of 2972	2380	cmd.exe	89
PID 2380 wrote to memory of 2972	2380	cmd.exe	89

C:\Users\Admin\AppData\Local\Temp\539ee7af02fcbd28659831dd774581f76ee66ca6238d12af286158f2f343f3b8.exe
"C:\Users\Admin\AppData\Local\Temp\539ee7af02fcbd28659831dd774581f76ee66ca6238d12af286158f2f343f3b8.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2024
- C:\Users\Admin\AppData\Local\Temp\EmbeddedExe1.exe
  "C:\Users\Admin\AppData\Local\Temp\EmbeddedExe1.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:4576
- - C:\Users\Admin\AppData\Local\poufs\caulds.exe
    "C:\Users\Admin\AppData\Local\Temp\EmbeddedExe1.exe"
    3⤵
    - Drops startup file
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    - Suspicious use of WriteProcessMemory
    PID:532
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Users\Admin\AppData\Local\Temp\EmbeddedExe1.exe"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2004
    - - C:\Windows\SysWOW64\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /C choice /C Y /N /D Y /T 3 & Del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:2380
      - C:\Windows\SysWOW64\choice.exe
        
        choice /C Y /N /D Y /T 3
        6⤵
        System Location Discovery: System Language Discovery
        
        PID:2972
- C:\Users\Admin\AppData\Local\Temp\EmbeddedExe2.exe
  "C:\Users\Admin\AppData\Local\Temp\EmbeddedExe2.exe"
  2⤵
  - Executes dropped EXE
  PID:620

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

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

C:\Users\Admin\AppData\Local\Temp\EmbeddedExe1.exe

Filesize
545KB

MD5
47310e2d76477f79641f8703027a60b0

SHA1
bba7157bfab11d11b6912cb0012e117de61d175a

SHA256
54f08d458c3a9b5b6553e6bc6810fd9071d7bc2a517576d4dcc45b1ca0a47d1f

SHA512
ccf55e9915002e828feec50c58ec1ccac378c0b1a1e081e5b2e542457ff4a2866aebaeeeb40bfe6188938b4e1dc0bc1c770e33a012752d28429f8b14ed7fb7f7

Download Submit
C:\Users\Admin\AppData\Local\Temp\EmbeddedExe2.exe

Filesize
1.6MB

MD5
5efef6cc9cd24baeeed71c1107fc32df

SHA1
3cfc9764083154f682a38831c8229e3e29cbe3ef

SHA256
e61b8f44ab92cf0f9cb1101347967d31e1839979142a4114a7dd02aa237ba021

SHA512
cecd98f0e238d7387b44838251b795bb95e85ec8d35242fc24532ba21929759685205133923268bf8bc0e2ded37db7d88ecbe2b692d2be6f09c6d92a57d1fdac

Download Submit
memory/532-35-0x0000000000840000-0x000000000097E000-memory.dmp

Filesize
1.2MB

Download
memory/532-49-0x0000000000840000-0x000000000097E000-memory.dmp

Filesize
1.2MB

Download
memory/2004-47-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2004-50-0x0000000005D40000-0x00000000062E4000-memory.dmp

Filesize
5.6MB

Download
memory/2004-51-0x0000000005790000-0x000000000582C000-memory.dmp

Filesize
624KB

Download
memory/2024-0-0x00007FFB39E23000-0x00007FFB39E25000-memory.dmp

Filesize
8KB

Download
memory/2024-1-0x0000000000DE0000-0x0000000001006000-memory.dmp

Filesize
2.1MB

Download
memory/4576-13-0x00000000001D0000-0x000000000030E000-memory.dmp

Filesize
1.2MB

Download
memory/4576-37-0x00000000001D0000-0x000000000030E000-memory.dmp

Filesize
1.2MB

Download

Analysis

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