asyncrat | dcb9b3bd02e4bca6dab8da73cfe8ff256cf70b2fef9aebd35f9c860b2e1df60e

Analysis

max time kernel
146s
max time network
130s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
23-12-2024 20:33

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General

Target

VenomRATv6.0.3.exe
Size

14.3MB
MD5

674fb9de862cbbb47a6ab5a7adb91d7e
SHA1

5895e99a1cb66771735bb93d6fc85110d064ac88
SHA256

dcb9b3bd02e4bca6dab8da73cfe8ff256cf70b2fef9aebd35f9c860b2e1df60e
SHA512

444d9c6519c1564520a93ca49edf1a7bb742043f53bcf3cb6fe7ae5561253515f39aa197cb39d10a140ac2fdf3b4986034d9f6f2264000965bd2eba94ec99602
SSDEEP

393216:vPv87RoDvSCG33lKqxsyEFfy1MpRt/RlY1V:vPv8727S/nweEFPRt5W1V

Score

10^/10

asyncrat venomrat xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

127.0.0.1:4444

heheyanel.ddns.net:4444

Attributes

Install_directory
%ProgramData%
install_file
Activator.exe
telegram
https://api.telegram.org/bot7427144754:AAHRLM93AsaKo2dFejmZxunuQW0uH41yfn0/sendMessage?chat_id=7294780361

Signatures

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

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/files/0x0009000000016ce8-12.dat	family_xworm
behavioral1/memory/2280-13-0x00000000008D0000-0x00000000008EA000-memory.dmp	family_xworm
behavioral1/memory/2076-45-0x00000000010D0000-0x00000000010EA000-memory.dmp	family_xworm
behavioral1/memory/880-48-0x0000000000330000-0x000000000034A000-memory.dmp	family_xworm

VenomRAT 2 IoCs

Detects VenomRAT.

rat

resource	yara_rule
behavioral1/files/0x000a0000000120d5-5.dat	VenomRAT
behavioral1/memory/1724-9-0x0000000000480000-0x00000000012B4000-memory.dmp	VenomRAT

Venomrat family
venomrat
Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
xworm

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2500	powershell.exe
2956	powershell.exe
2872	powershell.exe
2524	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	venom.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	venom.exe

Executes dropped EXE 4 IoCs

pid	Process
1724	Venom RAT + HVNC + Stealer + Grabber.exe
2280	venom.exe
2076	svchost
880	svchost

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\ProgramData\\svchost"	venom.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	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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
2744	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2872	powershell.exe
2524	powershell.exe
2500	powershell.exe
2956	powershell.exe
2280	venom.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2280	venom.exe
Token: SeDebugPrivilege	2872	powershell.exe
Token: SeDebugPrivilege	2524	powershell.exe
Token: SeDebugPrivilege	2500	powershell.exe
Token: SeDebugPrivilege	2956	powershell.exe
Token: SeDebugPrivilege	2280	venom.exe
Token: SeDebugPrivilege	2076	svchost
Token: SeDebugPrivilege	880	svchost

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2280	venom.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2296 wrote to memory of 1724	2296	VenomRATv6.0.3.exe	28
PID 2296 wrote to memory of 1724	2296	VenomRATv6.0.3.exe	28
PID 2296 wrote to memory of 1724	2296	VenomRATv6.0.3.exe	28
PID 2296 wrote to memory of 2280	2296	VenomRATv6.0.3.exe	29
PID 2296 wrote to memory of 2280	2296	VenomRATv6.0.3.exe	29
PID 2296 wrote to memory of 2280	2296	VenomRATv6.0.3.exe	29
PID 1724 wrote to memory of 836	1724	Venom RAT + HVNC + Stealer + Grabber.exe	30
PID 1724 wrote to memory of 836	1724	Venom RAT + HVNC + Stealer + Grabber.exe	30
PID 1724 wrote to memory of 836	1724	Venom RAT + HVNC + Stealer + Grabber.exe	30
PID 2280 wrote to memory of 2872	2280	venom.exe	32
PID 2280 wrote to memory of 2872	2280	venom.exe	32
PID 2280 wrote to memory of 2872	2280	venom.exe	32
PID 2280 wrote to memory of 2524	2280	venom.exe	34
PID 2280 wrote to memory of 2524	2280	venom.exe	34
PID 2280 wrote to memory of 2524	2280	venom.exe	34
PID 2280 wrote to memory of 2500	2280	venom.exe	36
PID 2280 wrote to memory of 2500	2280	venom.exe	36
PID 2280 wrote to memory of 2500	2280	venom.exe	36
PID 2280 wrote to memory of 2956	2280	venom.exe	38
PID 2280 wrote to memory of 2956	2280	venom.exe	38
PID 2280 wrote to memory of 2956	2280	venom.exe	38
PID 2280 wrote to memory of 2744	2280	venom.exe	40
PID 2280 wrote to memory of 2744	2280	venom.exe	40
PID 2280 wrote to memory of 2744	2280	venom.exe	40
PID 2144 wrote to memory of 2076	2144	taskeng.exe	45
PID 2144 wrote to memory of 2076	2144	taskeng.exe	45
PID 2144 wrote to memory of 2076	2144	taskeng.exe	45
PID 2144 wrote to memory of 880	2144	taskeng.exe	46
PID 2144 wrote to memory of 880	2144	taskeng.exe	46
PID 2144 wrote to memory of 880	2144	taskeng.exe	46

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\VenomRATv6.0.3.exe
"C:\Users\Admin\AppData\Local\Temp\VenomRATv6.0.3.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2296
- C:\Users\Admin\AppData\Roaming\Venom RAT + HVNC + Stealer + Grabber.exe
  "C:\Users\Admin\AppData\Roaming\Venom RAT + HVNC + Stealer + Grabber.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:1724
- - C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -u -p 1724 -s 528
    3⤵
    PID:836
- C:\Users\Admin\AppData\Roaming\venom.exe
  "C:\Users\Admin\AppData\Roaming\venom.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2280
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\venom.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2872
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'venom.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2524
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\svchost'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2500
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2956
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\ProgramData\svchost"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2744

C:\Windows\system32\taskeng.exe
taskeng.exe {D062D8EC-1716-411D-9AFC-EC10BBE39E0C} S-1-5-21-3551809350-4263495960-1443967649-1000:NNYJZAHP\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2144
- C:\ProgramData\svchost
  C:\ProgramData\svchost
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2076
- C:\ProgramData\svchost
  C:\ProgramData\svchost
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:880

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
e97c4121c61ddd84f7e51a3a745a37ce

SHA1
d4e16a22fe1f61bf4ffebed4952f7575046e40ea

SHA256
9090b3e3beb11edaabf4e8b4e049c4041399e9b20b5d256fb35e66af93c72d75

SHA512
77826f4741b33bb5b1f9f854d5ae4d680e3909b3db8db5f42667a69b2e9401ec321debfd8d50c27c0f3ce1eed32fb4db49f0e6455ca1f08763a7abba9fce0565

Download Submit
C:\Users\Admin\AppData\Roaming\Venom RAT + HVNC + Stealer + Grabber.exe

Filesize
14.2MB

MD5
3b3a304c6fc7a3a1d9390d7cbff56634

SHA1
e8bd5244e6362968f5017680da33f1e90ae63dd7

SHA256
7331368c01b2a16bda0f013f376a039e6aeb4cb2dd8b0c2afc7ca208fb544c58

SHA512
7f1beacb6449b3b3e108016c8264bb9a21ecba526c2778794f16a7f9c817c0bbd5d4cf0c208d706d25c54322a875da899ab047aab1e07684f6b7b6083981abe5

Download Submit
C:\Users\Admin\AppData\Roaming\venom.exe

Filesize
81KB

MD5
ac5c47b2a86a3042f02e26a338e99466

SHA1
98e8c13d41179575145cdc800e603b467c2b18f1

SHA256
837d509ad49a587036361ee7fc30f5b18238bb98a310418298b5a6c1d350cb96

SHA512
8468268c03c0e286fdd767f961e90ade962ee46b8e12eddbb3204e77aa26475add2a8d8e61e6c8dd08952a0571942915b926192b34029155489813221d7135b3

Download Submit
memory/880-48-0x0000000000330000-0x000000000034A000-memory.dmp

Filesize
104KB

Download
memory/1724-14-0x000007FEF55F0000-0x000007FEF5FDC000-memory.dmp

Filesize
9.9MB

Download
memory/1724-15-0x000007FEF55F0000-0x000007FEF5FDC000-memory.dmp

Filesize
9.9MB

Download
memory/1724-9-0x0000000000480000-0x00000000012B4000-memory.dmp

Filesize
14.2MB

Download
memory/2076-45-0x00000000010D0000-0x00000000010EA000-memory.dmp

Filesize
104KB

Download
memory/2280-13-0x00000000008D0000-0x00000000008EA000-memory.dmp

Filesize
104KB

Download
memory/2296-0-0x000007FEF55F3000-0x000007FEF55F4000-memory.dmp

Filesize
4KB

Download
memory/2296-1-0x00000000009F0000-0x000000000183E000-memory.dmp

Filesize
14.3MB

Download
memory/2524-27-0x000000001B650000-0x000000001B932000-memory.dmp

Filesize
2.9MB

Download
memory/2524-28-0x0000000002860000-0x0000000002868000-memory.dmp

Filesize
32KB

Download
memory/2872-20-0x000000001B700000-0x000000001B9E2000-memory.dmp

Filesize
2.9MB

Download
memory/2872-21-0x0000000001E20000-0x0000000001E28000-memory.dmp

Filesize
32KB

Download