snakekeylogger | e51e7b073e5fa3832455c7e87ccd3bbc7dd1dd3c72cf0bb273f1e24adec6ce92

General

Target

DYFRN_file.exe
Size

844KB
MD5

5e2725e6fc1948c0f8d7044bdbf5218a
SHA1

ab0f3415c6cd7f3ca2a1e935910a4801face7d99
SHA256

e51e7b073e5fa3832455c7e87ccd3bbc7dd1dd3c72cf0bb273f1e24adec6ce92
SHA512

dac35ed58a28d8df099a088a77ca8960e38d4e51a9149d68e96ed8f2bd9fdf0e449f7226fafc004c28e151370a356fe164493470262c1e0cfb87425cf1d2d731
SSDEEP

12288:mUnNezvoYK6g7B/7SDmX6a+xKCOmNOoqwBrMyU+Jiqa/M/kR:1IzLK6g7QSKzxLNOxwZMyUeBFa

Score

10^/10

snakekeylogger collection discovery execution keylogger stealer

Malware Config

Extracted

Family

snakekeylogger

C2

https://api.telegram.org/bot7692220058:AAEny12fSzuKXI7iNJaESECu5UR80nmwLAQ/sendMessage?chat_id=7342994424

Signatures

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

Snake Keylogger payload 5 IoCs

resource	yara_rule
behavioral1/memory/2608-21-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2608-22-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2608-18-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2608-24-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2608-16-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger

Snakekeylogger family
snakekeylogger

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
2644	powershell.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vbc.exe
Key opened	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vbc.exe
Key opened	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vbc.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 2756 set thread context of 2608	2756	DYFRN_file.exe	34

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 4 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	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DYFRN_file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2880	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2608	vbc.exe
2644	powershell.exe
2608	vbc.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2608	vbc.exe
Token: SeDebugPrivilege	2644	powershell.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2756 wrote to memory of 2644	2756	DYFRN_file.exe	30
PID 2756 wrote to memory of 2644	2756	DYFRN_file.exe	30
PID 2756 wrote to memory of 2644	2756	DYFRN_file.exe	30
PID 2756 wrote to memory of 2644	2756	DYFRN_file.exe	30
PID 2756 wrote to memory of 2880	2756	DYFRN_file.exe	31
PID 2756 wrote to memory of 2880	2756	DYFRN_file.exe	31
PID 2756 wrote to memory of 2880	2756	DYFRN_file.exe	31
PID 2756 wrote to memory of 2880	2756	DYFRN_file.exe	31
PID 2756 wrote to memory of 2608	2756	DYFRN_file.exe	34
PID 2756 wrote to memory of 2608	2756	DYFRN_file.exe	34
PID 2756 wrote to memory of 2608	2756	DYFRN_file.exe	34
PID 2756 wrote to memory of 2608	2756	DYFRN_file.exe	34
PID 2756 wrote to memory of 2608	2756	DYFRN_file.exe	34
PID 2756 wrote to memory of 2608	2756	DYFRN_file.exe	34
PID 2756 wrote to memory of 2608	2756	DYFRN_file.exe	34
PID 2756 wrote to memory of 2608	2756	DYFRN_file.exe	34
PID 2756 wrote to memory of 2608	2756	DYFRN_file.exe	34

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vbc.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vbc.exe

C:\Users\Admin\AppData\Local\Temp\DYFRN_file.exe
"C:\Users\Admin\AppData\Local\Temp\DYFRN_file.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2756
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\sEVJotUOhCXWC.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2644
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\sEVJotUOhCXWC" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8768.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2880
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.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:2608

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

2

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp8768.tmp

Filesize
1KB

MD5
99d9e8aaa56e99eac22c9f94b1023cd3

SHA1
239cbff236b43472b2538adf0054cdb38f32d178

SHA256
1a10e1008a8ec7a0b6548ec3535ef98fd3c0ed1ac543033479408207b9e34a5c

SHA512
8ff3bd1d115cf15a38504c449e605b8879ee737b1d4854ded8673a358620819dba3e07c97537fffc8a77002ad6f1d0e44ee831773dd2241690d7f69a03bf9a06

Download Submit
memory/2608-20-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2608-22-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2608-14-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2608-16-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2608-21-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2608-24-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2608-18-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2608-12-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2756-1-0x0000000001290000-0x0000000001366000-memory.dmp

Filesize
856KB

Download
memory/2756-5-0x0000000074E80000-0x000000007556E000-memory.dmp

Filesize
6.9MB

Download
memory/2756-27-0x0000000074E80000-0x000000007556E000-memory.dmp

Filesize
6.9MB

Download
memory/2756-0-0x0000000074E8E000-0x0000000074E8F000-memory.dmp

Filesize
4KB

Download
memory/2756-2-0x0000000074E80000-0x000000007556E000-memory.dmp

Filesize
6.9MB

Download
memory/2756-6-0x0000000004D20000-0x0000000004D8C000-memory.dmp

Filesize
432KB

Download
memory/2756-4-0x0000000074E8E000-0x0000000074E8F000-memory.dmp

Filesize
4KB

Download
memory/2756-3-0x00000000003D0000-0x00000000003EE000-memory.dmp

Filesize
120KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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