snakekeylogger | 4fc2e821a7e7d72363cbc61a1fb1ed5a4cd1c06c09b3794b1ac24ef2fd73b4fd

Analysis

max time kernel
69s
max time network
130s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
06/02/2023, 14:29

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General

Target
zmk2cH9YvualFtD.exe
Size 750KB
Sample230206-rtkc2aec89
SHA256 4fc2e821a7e7d72363cbc61a1fb1ed5a4cd1c06c09b3794b1ac24ef2fd73b4fd
MD5 a896834df12927012e557284dbd8f037
SHA1 6bdae2059f62c19acb31b92b4e1e5acb5fc5e5f3
SHA512 a2021ed79be25262893b51b8ecd96bd8af5325dcc1a7b81a9dd8773bdf1740adf4bdcca8591eb6474cc721d0bc1463a2e00f9713dab5e45d310b0c4ae1d9bf71
SSDEEP 12288:4pkGPAFTi1UtNrrc5Cz5uHzCFppZAFxAYrCAcXnyXx6q16ahRZ5G:6AFTi1U346QHd51NMS5G
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

snakekeylogger collection evasion keylogger spyware stealer

Malware Config

Extracted

Family

snakekeylogger

https://api.telegram.org/bot5412042498:AAH4OVSAlB-9yvO0MxObTPVF8mPej6Ln4M4/sendMessage?chat_id=5573520537

Signatures

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

Snake Keylogger payload 6 IoCs

resource	yara_rule
behavioral1/memory/588-67-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/588-69-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/588-70-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/588-71-0x000000000042122E-mapping.dmp	family_snakekeylogger
behavioral1/memory/588-73-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/588-75-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger

Disables RegEdit via registry modification 1 IoCs

evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	REG.exe

Disables Task Manager via registry modification
evasion
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

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 stealer

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 stealer

Data from Local System
T1005

Credentials in Files
T1081

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	zmk2cH9YvualFtD.exe
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	zmk2cH9YvualFtD.exe
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	zmk2cH9YvualFtD.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
4	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1632 set thread context of 588	1632	zmk2cH9YvualFtD.exe	32

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
1272	schtasks.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
712	REG.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
1632	zmk2cH9YvualFtD.exe
1632	zmk2cH9YvualFtD.exe
1632	zmk2cH9YvualFtD.exe
1632	zmk2cH9YvualFtD.exe
588	zmk2cH9YvualFtD.exe
1324	powershell.exe
588	zmk2cH9YvualFtD.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
588	zmk2cH9YvualFtD.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1632	zmk2cH9YvualFtD.exe
Token: SeDebugPrivilege	588	zmk2cH9YvualFtD.exe
Token: SeDebugPrivilege	1324	powershell.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1632 wrote to memory of 1324	1632	zmk2cH9YvualFtD.exe	28
PID 1632 wrote to memory of 1324	1632	zmk2cH9YvualFtD.exe	28
PID 1632 wrote to memory of 1324	1632	zmk2cH9YvualFtD.exe	28
PID 1632 wrote to memory of 1324	1632	zmk2cH9YvualFtD.exe	28
PID 1632 wrote to memory of 1272	1632	zmk2cH9YvualFtD.exe	30
PID 1632 wrote to memory of 1272	1632	zmk2cH9YvualFtD.exe	30
PID 1632 wrote to memory of 1272	1632	zmk2cH9YvualFtD.exe	30
PID 1632 wrote to memory of 1272	1632	zmk2cH9YvualFtD.exe	30
PID 1632 wrote to memory of 588	1632	zmk2cH9YvualFtD.exe	32
PID 1632 wrote to memory of 588	1632	zmk2cH9YvualFtD.exe	32
PID 1632 wrote to memory of 588	1632	zmk2cH9YvualFtD.exe	32
PID 1632 wrote to memory of 588	1632	zmk2cH9YvualFtD.exe	32
PID 1632 wrote to memory of 588	1632	zmk2cH9YvualFtD.exe	32
PID 1632 wrote to memory of 588	1632	zmk2cH9YvualFtD.exe	32
PID 1632 wrote to memory of 588	1632	zmk2cH9YvualFtD.exe	32
PID 1632 wrote to memory of 588	1632	zmk2cH9YvualFtD.exe	32
PID 1632 wrote to memory of 588	1632	zmk2cH9YvualFtD.exe	32
PID 588 wrote to memory of 712	588	zmk2cH9YvualFtD.exe	33
PID 588 wrote to memory of 712	588	zmk2cH9YvualFtD.exe	33
PID 588 wrote to memory of 712	588	zmk2cH9YvualFtD.exe	33
PID 588 wrote to memory of 712	588	zmk2cH9YvualFtD.exe	33

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	zmk2cH9YvualFtD.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	zmk2cH9YvualFtD.exe

C:\Users\Admin\AppData\Local\Temp\zmk2cH9YvualFtD.exe
"C:\Users\Admin\AppData\Local\Temp\zmk2cH9YvualFtD.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1632
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\SemwdizTOo.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1324
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\SemwdizTOo" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB75E.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1272
- C:\Users\Admin\AppData\Local\Temp\zmk2cH9YvualFtD.exe
  "C:\Users\Admin\AppData\Local\Temp\zmk2cH9YvualFtD.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  - outlook_office_path
  - outlook_win_path
  PID:588
- - C:\Windows\SysWOW64\REG.exe
    REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableRegistryTools /t REG_DWORD /d 1 /f
    3⤵
    - Disables RegEdit via registry modification
    - Modifies registry key
    PID:712

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

tmpB75E.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmpB75E.tmp
Size 1KB
SHA256 37fb230e29ee727c9c98733c69679f14731fb929317604a3218baf55e8f3eb56
MD5 b056d10a8c0995f12f772f78aa35128e
SHA1 bc28160151df7f6231b516aab37bd160925c9b9d
SHA512 deb6ad185737251bf9569bbfaf6929bb1930210c827cd453c44f82169dfc3a6b13edd6728661803af1e7c3162ffaf6ec2302cc81ec91c3dcace4786d66231190
MD5 SHA1 SHA512

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memory/588-73-0x0000000000400000-0x0000000000426000-memory.dmp

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memory/588-75-0x0000000000400000-0x0000000000426000-memory.dmp

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memory/588-65-0x0000000000400000-0x0000000000426000-memory.dmp

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memory/588-64-0x0000000000400000-0x0000000000426000-memory.dmp

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memory/588-70-0x0000000000400000-0x0000000000426000-memory.dmp

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memory/588-69-0x0000000000400000-0x0000000000426000-memory.dmp

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memory/588-67-0x0000000000400000-0x0000000000426000-memory.dmp

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memory/1324-77-0x000000006DD30000-0x000000006E2DB000-memory.dmp

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memory/1324-78-0x000000006DD30000-0x000000006E2DB000-memory.dmp

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memory/1632-56-0x0000000000280000-0x0000000000294000-memory.dmp

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memory/1632-63-0x0000000000DE0000-0x0000000000E0A000-memory.dmp

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memory/1632-58-0x0000000008050000-0x00000000080D2000-memory.dmp

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memory/1632-55-0x0000000076091000-0x0000000076093000-memory.dmp

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memory/1632-54-0x0000000000E30000-0x0000000000EF0000-memory.dmp

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memory/1632-57-0x00000000003B0000-0x00000000003BC000-memory.dmp

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