snakekeylogger | 903260123ec05ac23239a978bcc9f86be2c20c3addc106dfbc4c73cffe2f3633

General

Target

kyvjZrZUIQrUUSB.exe
Size

525KB
MD5

e1207823cb70e5b4aae2cd8b41994516
SHA1

b767a0d40cb65167de0d4c39eee9ba0599d95834
SHA256

903260123ec05ac23239a978bcc9f86be2c20c3addc106dfbc4c73cffe2f3633
SHA512

b220c3c85a64d4dc037ced9d0417bb99cd3ce30acdbe1264694f73aa04686291e241b1b7c34e4fb0d3a99751a38c59e03abbf47d474658a6223c6be3e7f9bddb
SSDEEP

12288:UrJwfqoQ6BxGBYoyM64aibR570f+2fth64CSn0qHQcMSyFtvGKkR:jBx20M64au0meSdYQbSyq

Score

10^/10

snakekeylogger collection credential_access discovery execution keylogger spyware stealer

Malware Config

Extracted

Family

snakekeylogger

C2

https://api.telegram.org/bot7013350856:AAEMW-L9OH6xJPBSHadxtnabC3gFbH_e250/sendMessage?chat_id=7239159003

Signatures

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

Snake Keylogger payload 5 IoCs

resource	yara_rule
behavioral1/memory/2712-14-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2712-20-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2712-23-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2712-18-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2712-12-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger

Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2368	powershell.exe

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
T1552.001
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
T1552.001

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	kyvjZrZUIQrUUSB.exe
Key opened	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	kyvjZrZUIQrUUSB.exe
Key opened	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	kyvjZrZUIQrUUSB.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 2076 set thread context of 2712	2076	kyvjZrZUIQrUUSB.exe	33

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 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	kyvjZrZUIQrUUSB.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kyvjZrZUIQrUUSB.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2712	kyvjZrZUIQrUUSB.exe
2368	powershell.exe
2712	kyvjZrZUIQrUUSB.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2712	kyvjZrZUIQrUUSB.exe
Token: SeDebugPrivilege	2368	powershell.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2076 wrote to memory of 2368	2076	kyvjZrZUIQrUUSB.exe	31
PID 2076 wrote to memory of 2368	2076	kyvjZrZUIQrUUSB.exe	31
PID 2076 wrote to memory of 2368	2076	kyvjZrZUIQrUUSB.exe	31
PID 2076 wrote to memory of 2368	2076	kyvjZrZUIQrUUSB.exe	31
PID 2076 wrote to memory of 2712	2076	kyvjZrZUIQrUUSB.exe	33
PID 2076 wrote to memory of 2712	2076	kyvjZrZUIQrUUSB.exe	33
PID 2076 wrote to memory of 2712	2076	kyvjZrZUIQrUUSB.exe	33
PID 2076 wrote to memory of 2712	2076	kyvjZrZUIQrUUSB.exe	33
PID 2076 wrote to memory of 2712	2076	kyvjZrZUIQrUUSB.exe	33
PID 2076 wrote to memory of 2712	2076	kyvjZrZUIQrUUSB.exe	33
PID 2076 wrote to memory of 2712	2076	kyvjZrZUIQrUUSB.exe	33
PID 2076 wrote to memory of 2712	2076	kyvjZrZUIQrUUSB.exe	33
PID 2076 wrote to memory of 2712	2076	kyvjZrZUIQrUUSB.exe	33

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	kyvjZrZUIQrUUSB.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	kyvjZrZUIQrUUSB.exe

C:\Users\Admin\AppData\Local\Temp\kyvjZrZUIQrUUSB.exe
"C:\Users\Admin\AppData\Local\Temp\kyvjZrZUIQrUUSB.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2076
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\kyvjZrZUIQrUUSB.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2368
- C:\Users\Admin\AppData\Local\Temp\kyvjZrZUIQrUUSB.exe
  "C:\Users\Admin\AppData\Local\Temp\kyvjZrZUIQrUUSB.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:2712

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2076-0-0x00000000745DE000-0x00000000745DF000-memory.dmp

Filesize
4KB

Download
memory/2076-1-0x0000000000880000-0x0000000000906000-memory.dmp

Filesize
536KB

Download
memory/2076-2-0x00000000745D0000-0x0000000074CBE000-memory.dmp

Filesize
6.9MB

Download
memory/2076-3-0x0000000004FC0000-0x000000000503A000-memory.dmp

Filesize
488KB

Download
memory/2076-4-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2076-5-0x00000000745DE000-0x00000000745DF000-memory.dmp

Filesize
4KB

Download
memory/2076-6-0x00000000745D0000-0x0000000074CBE000-memory.dmp

Filesize
6.9MB

Download
memory/2076-7-0x00000000053A0000-0x0000000005408000-memory.dmp

Filesize
416KB

Download
memory/2076-28-0x00000000745D0000-0x0000000074CBE000-memory.dmp

Filesize
6.9MB

Download
memory/2712-20-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2712-14-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2712-23-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2712-18-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2712-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2712-12-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2712-10-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2712-25-0x00000000745D0000-0x0000000074CBE000-memory.dmp

Filesize
6.9MB

Download
memory/2712-24-0x00000000745D0000-0x0000000074CBE000-memory.dmp

Filesize
6.9MB

Download
memory/2712-8-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2712-29-0x00000000745D0000-0x0000000074CBE000-memory.dmp

Filesize
6.9MB

Download

Analysis

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