snakekeylogger | 695e823587b2441ca95f76514ec7745ff78bf8dc5b3e153ca63e7d7a11d1a4f5

Analysis

max time kernel
86s
max time network
149s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
29/11/2022, 08:37

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General

Target
PO_28135_____.EXE.exe
Size 6KB
Sample221129-kh6cssff7v
SHA256 695e823587b2441ca95f76514ec7745ff78bf8dc5b3e153ca63e7d7a11d1a4f5
MD5 d434ad5325c7641a7a1cde635dfffc90
SHA1 11614131f5859bf0aa5a29ce716f118fab7c0dc9
SHA512 9391bae6d24306a081bcd396614f19a88c4a5614eaeff817567bb7dd5656388ba26e9dc9ad106058fdde8d40b6a9c0af6e6915ca3c30deae68fc9b726aff2bda
SSDEEP 96:iE89uwlvKFhAXft4WvH7q6+1UknljiBm/4Nke4LH3GnUODL:iHXftbvbq6CljiBm/4GpHv0
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

snakekeylogger collection keylogger persistence spyware stealer

Malware Config

Signatures

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

Snake Keylogger payload 6 IoCs

resource	yara_rule
behavioral1/memory/1264-70-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1264-72-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1264-74-0x00000000004208BE-mapping.dmp	family_snakekeylogger
behavioral1/memory/1264-73-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1264-76-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/1264-78-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger

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-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO_28135_____.EXE.exe
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO_28135_____.EXE.exe
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO_28135_____.EXE.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rnfgxs = "\"C:\\Users\\Admin\\AppData\\Roaming\\Dezfbj\\Rnfgxs.exe\""	PO_28135_____.EXE.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
6	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1380 set thread context of 1264	1380	PO_28135_____.EXE.exe	31

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
980	powershell.exe
1272	powershell.exe
1264	PO_28135_____.EXE.exe
1264	PO_28135_____.EXE.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	980	powershell.exe
Token: SeDebugPrivilege	1380	PO_28135_____.EXE.exe
Token: SeDebugPrivilege	1272	powershell.exe
Token: SeDebugPrivilege	1264	PO_28135_____.EXE.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1380 wrote to memory of 980	1380	PO_28135_____.EXE.exe	27
PID 1380 wrote to memory of 980	1380	PO_28135_____.EXE.exe	27
PID 1380 wrote to memory of 980	1380	PO_28135_____.EXE.exe	27
PID 1380 wrote to memory of 980	1380	PO_28135_____.EXE.exe	27
PID 1380 wrote to memory of 1272	1380	PO_28135_____.EXE.exe	29
PID 1380 wrote to memory of 1272	1380	PO_28135_____.EXE.exe	29
PID 1380 wrote to memory of 1272	1380	PO_28135_____.EXE.exe	29
PID 1380 wrote to memory of 1272	1380	PO_28135_____.EXE.exe	29
PID 1380 wrote to memory of 1264	1380	PO_28135_____.EXE.exe	31
PID 1380 wrote to memory of 1264	1380	PO_28135_____.EXE.exe	31
PID 1380 wrote to memory of 1264	1380	PO_28135_____.EXE.exe	31
PID 1380 wrote to memory of 1264	1380	PO_28135_____.EXE.exe	31
PID 1380 wrote to memory of 1264	1380	PO_28135_____.EXE.exe	31
PID 1380 wrote to memory of 1264	1380	PO_28135_____.EXE.exe	31
PID 1380 wrote to memory of 1264	1380	PO_28135_____.EXE.exe	31
PID 1380 wrote to memory of 1264	1380	PO_28135_____.EXE.exe	31
PID 1380 wrote to memory of 1264	1380	PO_28135_____.EXE.exe	31

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO_28135_____.EXE.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO_28135_____.EXE.exe

C:\Users\Admin\AppData\Local\Temp\PO_28135_____.EXE.exe
"C:\Users\Admin\AppData\Local\Temp\PO_28135_____.EXE.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1380
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" [System.Security.Principal.WindowsIdentity]::GetCurrent().Name
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:980
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAANQA2AA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1272
- C:\Users\Admin\AppData\Local\Temp\PO_28135_____.EXE.exe
  C:\Users\Admin\AppData\Local\Temp\PO_28135_____.EXE.exe
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1264

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

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

d93f411851d7c929.customDestinations-ms

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
Size 7KB
SHA256 d3269bb5f2ac593c696c6e88b72a0cdc070530f955dee27b7f2e88c1caabe023
MD5 c620eaf4e1a86f4a120dbd9070b17b3d
SHA1 d071cb2d78352a3adf46d9b08b774fea34944760
SHA512 227b62a913ccf6e1c6cee57da657d00d4315e3446518d9c9f19ee517f7d603f42caeb4f1e4272c8ff70e7e2430a98fe297f8e68913b990364cbf839ff79ef3e9
SSDEEP 96:0dKC+M87nqvsqvJCwogdKC+M87nqvsEHyqvJCworNGQXQHg27lxXlUVdl:Y0HUo80HAHnorNxh27lxIl
MD5 SHA1 SHA512 SSDEEP

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memory/980-59-0x000000006F4F0000-0x000000006FA9B000-memory.dmp

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memory/980-58-0x000000006F4F0000-0x000000006FA9B000-memory.dmp

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memory/1264-68-0x0000000000400000-0x0000000000426000-memory.dmp

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memory/1264-72-0x0000000000400000-0x0000000000426000-memory.dmp

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memory/1264-78-0x0000000000400000-0x0000000000426000-memory.dmp

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memory/1264-76-0x0000000000400000-0x0000000000426000-memory.dmp

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memory/1264-73-0x0000000000400000-0x0000000000426000-memory.dmp

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memory/1264-70-0x0000000000400000-0x0000000000426000-memory.dmp

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memory/1264-67-0x0000000000400000-0x0000000000426000-memory.dmp

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memory/1272-66-0x000000006E160000-0x000000006E70B000-memory.dmp

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memory/1272-65-0x000000006E160000-0x000000006E70B000-memory.dmp

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memory/1272-64-0x000000006E160000-0x000000006E70B000-memory.dmp

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memory/1380-54-0x00000000011F0000-0x00000000011F8000-memory.dmp

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memory/1380-60-0x0000000008420000-0x0000000008626000-memory.dmp

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memory/1380-55-0x00000000757A1000-0x00000000757A3000-memory.dmp

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