asyncrat | 01b360f4da3ffee6ed1837fa4c1ba8349f69363d96715bcee9cf3053a375c5db

Analysis

max time kernel
150s
max time network
119s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
12-02-2025 09:01

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General

Target

144000097082_20250101_20250211_40479.exe
Size

1.5MB
MD5

8559ce3fb23e0ebe23d299bb92f4e8c3
SHA1

717f98088e5e6cbf8975635706d04dc7807889f4
SHA256

e19a495d86511aeff9e577eea8af7f6894909553460c63066813e488e42061db
SHA512

92c4841c60e810c023598d29e45ea90d3d8b7c332d727fa107cd8134c6979d061c002db83b584aaa5f80eb1ae3c12d99e8e53ec6d01d71be79e06e77be025bcc
SSDEEP

24576:VKBnz2UxqpUB9R9UGEiDRKt0x/gcpouZGXFh0DA5Jke4w3MDyupBif3x:VzKqpefEic6xlCp0yOe48E9pBif3x

Score

10^/10

asyncrat venomrat jan discovery persistence rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

JAN

Mutex

qnxsdyjsfdtxvg

Attributes

delay
1
install
false
install_folder
%AppData%
pastebin_config
https://pastebin.com/raw/Ax2bm8Nk

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Asyncrat family
asyncrat

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Local\\serviceXlogin.exe,"	reg.exe

VenomRAT 2 IoCs

Detects VenomRAT.

rat

resource	yara_rule
behavioral1/memory/1856-26-0x0000000000400000-0x0000000000418000-memory.dmp	VenomRAT
behavioral1/memory/1856-24-0x0000000000400000-0x0000000000418000-memory.dmp	VenomRAT

Venomrat family
venomrat

Executes dropped EXE 1 IoCs

pid	Process
3000	serviceXlogin.exe

Loads dropped DLL 2 IoCs

pid	Process
2656	cmd.exe
2656	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 8 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	serviceXlogin.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	144000097082_20250101_20250211_40479.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 5 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
1776	PING.EXE
1332	PING.EXE
2188	cmd.exe
2840	PING.EXE
2656	cmd.exe

Runs ping.exe 1 TTPs 3 IoCs

Remote System Discovery

T1018

pid	Process
2840	PING.EXE
1776	PING.EXE
1332	PING.EXE

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2520	144000097082_20250101_20250211_40479.exe
2520	144000097082_20250101_20250211_40479.exe
2520	144000097082_20250101_20250211_40479.exe
2520	144000097082_20250101_20250211_40479.exe
2520	144000097082_20250101_20250211_40479.exe
2520	144000097082_20250101_20250211_40479.exe
3000	serviceXlogin.exe
3000	serviceXlogin.exe
3000	serviceXlogin.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2520	144000097082_20250101_20250211_40479.exe
Token: SeDebugPrivilege	3000	serviceXlogin.exe

Suspicious use of WriteProcessMemory 40 IoCs

description	pid	Process	procid_target
PID 2520 wrote to memory of 2188	2520	144000097082_20250101_20250211_40479.exe	30
PID 2520 wrote to memory of 2188	2520	144000097082_20250101_20250211_40479.exe	30
PID 2520 wrote to memory of 2188	2520	144000097082_20250101_20250211_40479.exe	30
PID 2520 wrote to memory of 2188	2520	144000097082_20250101_20250211_40479.exe	30
PID 2188 wrote to memory of 2840	2188	cmd.exe	32
PID 2188 wrote to memory of 2840	2188	cmd.exe	32
PID 2188 wrote to memory of 2840	2188	cmd.exe	32
PID 2188 wrote to memory of 2840	2188	cmd.exe	32
PID 2520 wrote to memory of 2656	2520	144000097082_20250101_20250211_40479.exe	34
PID 2520 wrote to memory of 2656	2520	144000097082_20250101_20250211_40479.exe	34
PID 2520 wrote to memory of 2656	2520	144000097082_20250101_20250211_40479.exe	34
PID 2520 wrote to memory of 2656	2520	144000097082_20250101_20250211_40479.exe	34
PID 2656 wrote to memory of 1776	2656	cmd.exe	36
PID 2656 wrote to memory of 1776	2656	cmd.exe	36
PID 2656 wrote to memory of 1776	2656	cmd.exe	36
PID 2656 wrote to memory of 1776	2656	cmd.exe	36
PID 2188 wrote to memory of 2476	2188	cmd.exe	37
PID 2188 wrote to memory of 2476	2188	cmd.exe	37
PID 2188 wrote to memory of 2476	2188	cmd.exe	37
PID 2188 wrote to memory of 2476	2188	cmd.exe	37
PID 2656 wrote to memory of 1332	2656	cmd.exe	38
PID 2656 wrote to memory of 1332	2656	cmd.exe	38
PID 2656 wrote to memory of 1332	2656	cmd.exe	38
PID 2656 wrote to memory of 1332	2656	cmd.exe	38
PID 2656 wrote to memory of 3000	2656	cmd.exe	39
PID 2656 wrote to memory of 3000	2656	cmd.exe	39
PID 2656 wrote to memory of 3000	2656	cmd.exe	39
PID 2656 wrote to memory of 3000	2656	cmd.exe	39
PID 3000 wrote to memory of 1856	3000	serviceXlogin.exe	40
PID 3000 wrote to memory of 1856	3000	serviceXlogin.exe	40
PID 3000 wrote to memory of 1856	3000	serviceXlogin.exe	40
PID 3000 wrote to memory of 1856	3000	serviceXlogin.exe	40
PID 3000 wrote to memory of 1856	3000	serviceXlogin.exe	40
PID 3000 wrote to memory of 1856	3000	serviceXlogin.exe	40
PID 3000 wrote to memory of 1856	3000	serviceXlogin.exe	40
PID 3000 wrote to memory of 1856	3000	serviceXlogin.exe	40
PID 3000 wrote to memory of 1856	3000	serviceXlogin.exe	40
PID 3000 wrote to memory of 1856	3000	serviceXlogin.exe	40
PID 3000 wrote to memory of 1856	3000	serviceXlogin.exe	40
PID 3000 wrote to memory of 1856	3000	serviceXlogin.exe	40

C:\Users\Admin\AppData\Local\Temp\144000097082_20250101_20250211_40479.exe
"C:\Users\Admin\AppData\Local\Temp\144000097082_20250101_20250211_40479.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2520
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c ping 127.0.0.1 -n 35 > nul && REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v "Shell" /t REG_SZ /d "explorer.exe,C:\Users\Admin\AppData\Local\serviceXlogin.exe,"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2188
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 35
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2840
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v "Shell" /t REG_SZ /d "explorer.exe,C:\Users\Admin\AppData\Local\serviceXlogin.exe,"
    3⤵
    - Modifies WinLogon for persistence
    - System Location Discovery: System Language Discovery
    PID:2476
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c ping 127.0.0.1 -n 43 > nul && copy "C:\Users\Admin\AppData\Local\Temp\144000097082_20250101_20250211_40479.exe" "C:\Users\Admin\AppData\Local\serviceXlogin.exe" && ping 127.0.0.1 -n 43 > nul && "C:\Users\Admin\AppData\Local\serviceXlogin.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2656
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 43
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1776
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 43
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1332
- - C:\Users\Admin\AppData\Local\serviceXlogin.exe
    "C:\Users\Admin\AppData\Local\serviceXlogin.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3000
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
      4⤵
      PID:1856

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Remote System Discovery

T1018

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\serviceXlogin.exe

Filesize
1.5MB

MD5
8559ce3fb23e0ebe23d299bb92f4e8c3

SHA1
717f98088e5e6cbf8975635706d04dc7807889f4

SHA256
e19a495d86511aeff9e577eea8af7f6894909553460c63066813e488e42061db

SHA512
92c4841c60e810c023598d29e45ea90d3d8b7c332d727fa107cd8134c6979d061c002db83b584aaa5f80eb1ae3c12d99e8e53ec6d01d71be79e06e77be025bcc

Download Submit
memory/1856-22-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/1856-24-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/1856-26-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/1856-28-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1856-20-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2520-4-0x0000000074C5E000-0x0000000074C5F000-memory.dmp

Filesize
4KB

Download
memory/2520-6-0x0000000074C50000-0x000000007533E000-memory.dmp

Filesize
6.9MB

Download
memory/2520-5-0x0000000074C50000-0x000000007533E000-memory.dmp

Filesize
6.9MB

Download
memory/2520-0-0x0000000074C5E000-0x0000000074C5F000-memory.dmp

Filesize
4KB

Download
memory/2520-3-0x0000000074C50000-0x000000007533E000-memory.dmp

Filesize
6.9MB

Download
memory/2520-2-0x0000000000A10000-0x0000000000A52000-memory.dmp

Filesize
264KB

Download
memory/2520-1-0x0000000000C20000-0x0000000000D98000-memory.dmp

Filesize
1.5MB

Download
memory/3000-17-0x00000000012C0000-0x0000000001438000-memory.dmp

Filesize
1.5MB

Download
memory/3000-18-0x0000000000B70000-0x0000000000B8A000-memory.dmp

Filesize
104KB

Download
memory/3000-19-0x0000000000A20000-0x0000000000A26000-memory.dmp

Filesize
24KB

Download