arrowrat | b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402

Analysis

max time kernel
127s
max time network
122s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
24-09-2024 11:28

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General

Target

b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe
Size

138KB
MD5

6787bc47fb117dd9ee565060bf696218
SHA1

e11600ca6afb97abbb9c42f1ded0d6afc6daef12
SHA256

b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402
SHA512

506c26e3803d30983b8b4e925d5e78e3e27c953d708d5f1fbdbf79a0d2a23d2c299e7021e33c2feccba1de57e1de9ac1b3c6ad5e89bd0e67fdf617ad509105f4
SSDEEP

3072:qbvc5mz7Bqh1v59Y08mAjs0Ltel+qOeJHlpV8b+Y/YS:qbvUS7BqjjYHdrqkL/

Score

10^/10

arrowrat venomhvnc persistence rat

Malware Config

Extracted

Family

arrowrat

Botnet

VenomHVNC

84.17.59.86:10018

Mutex

IDgbBCwxP

Signatures

ArrowRat
Remote access tool with various capabilities first seen in late 2021.
rat arrowrat

Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

T1112

Processes:

explorer.exe

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Active Setup\Installed Components	explorer.exe

Modifies registry class 5 IoCs

Processes:

explorer.exe

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_Classes\Local Settings	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

Processes:

b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe

pid	Process
2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe
2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe
2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe
2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe
2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe
2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe
2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe
2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe
2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe
2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe
2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe
2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe
2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe
2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe
2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe
2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe
2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe
2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe
2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe
2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe
2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

Processes:

b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exeexplorer.exe

description	pid	Process
Token: SeDebugPrivilege	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe
Token: SeShutdownPrivilege	2356	explorer.exe
Token: SeShutdownPrivilege	2356	explorer.exe
Token: SeShutdownPrivilege	2356	explorer.exe
Token: SeShutdownPrivilege	2356	explorer.exe
Token: SeShutdownPrivilege	2356	explorer.exe
Token: SeShutdownPrivilege	2356	explorer.exe
Token: SeShutdownPrivilege	2356	explorer.exe
Token: SeShutdownPrivilege	2356	explorer.exe
Token: SeShutdownPrivilege	2356	explorer.exe
Token: SeShutdownPrivilege	2356	explorer.exe
Token: SeShutdownPrivilege	2356	explorer.exe

Suspicious use of FindShellTrayWindow 27 IoCs

Processes:

explorer.exe

pid	Process
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe

Suspicious use of SendNotifyMessage 17 IoCs

Processes:

explorer.exe

pid	Process
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe
2356	explorer.exe

Suspicious use of WriteProcessMemory 46 IoCs

Processes:

b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exeexplorer.exe

description	pid	Process	procid_target
PID 2136 wrote to memory of 2356	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	30
PID 2136 wrote to memory of 2356	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	30
PID 2136 wrote to memory of 2356	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	30
PID 2136 wrote to memory of 1864	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	31
PID 2136 wrote to memory of 1864	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	31
PID 2136 wrote to memory of 1864	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	31
PID 2136 wrote to memory of 1864	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	31
PID 2136 wrote to memory of 1352	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	32
PID 2136 wrote to memory of 1352	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	32
PID 2136 wrote to memory of 1352	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	32
PID 2136 wrote to memory of 1352	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	32
PID 2136 wrote to memory of 2540	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	33
PID 2136 wrote to memory of 2540	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	33
PID 2136 wrote to memory of 2540	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	33
PID 2136 wrote to memory of 2540	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	33
PID 2136 wrote to memory of 2060	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	34
PID 2136 wrote to memory of 2060	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	34
PID 2136 wrote to memory of 2060	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	34
PID 2136 wrote to memory of 2060	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	34
PID 2136 wrote to memory of 1792	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	35
PID 2136 wrote to memory of 1792	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	35
PID 2136 wrote to memory of 1792	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	35
PID 2136 wrote to memory of 1792	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	35
PID 2136 wrote to memory of 2512	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	36
PID 2136 wrote to memory of 2512	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	36
PID 2136 wrote to memory of 2512	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	36
PID 2136 wrote to memory of 2512	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	36
PID 2136 wrote to memory of 2380	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	37
PID 2136 wrote to memory of 2380	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	37
PID 2136 wrote to memory of 2380	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	37
PID 2136 wrote to memory of 2380	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	37
PID 2136 wrote to memory of 1752	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	38
PID 2136 wrote to memory of 1752	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	38
PID 2136 wrote to memory of 1752	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	38
PID 2136 wrote to memory of 1752	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	38
PID 2136 wrote to memory of 1988	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	39
PID 2136 wrote to memory of 1988	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	39
PID 2136 wrote to memory of 1988	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	39
PID 2136 wrote to memory of 1988	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	39
PID 2136 wrote to memory of 1972	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	40
PID 2136 wrote to memory of 1972	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	40
PID 2136 wrote to memory of 1972	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	40
PID 2136 wrote to memory of 1972	2136	b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe	40
PID 2356 wrote to memory of 2960	2356	explorer.exe	41
PID 2356 wrote to memory of 2960	2356	explorer.exe	41
PID 2356 wrote to memory of 2960	2356	explorer.exe	41

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\b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe
"C:\Users\Admin\AppData\Local\Temp\b766c8001cc928c65188a80a149d8eb11c59178b68cee4437659e67d2f02c402.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2136
- C:\Windows\explorer.exe
  "C:\Windows\explorer.exe"
  2⤵
  - Boot or Logon Autostart Execution: Active Setup
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2356
- - C:\Windows\system32\ctfmon.exe
    ctfmon.exe
    3⤵
    PID:2960
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" VenomHVNC 84.17.59.86 10018 IDgbBCwxP
  2⤵
  PID:1864
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" VenomHVNC 84.17.59.86 10018 IDgbBCwxP
  2⤵
  PID:1352
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" VenomHVNC 84.17.59.86 10018 IDgbBCwxP
  2⤵
  PID:2540
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" VenomHVNC 84.17.59.86 10018 IDgbBCwxP
  2⤵
  PID:2060
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" VenomHVNC 84.17.59.86 10018 IDgbBCwxP
  2⤵
  PID:1792
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" VenomHVNC 84.17.59.86 10018 IDgbBCwxP
  2⤵
  PID:2512
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" VenomHVNC 84.17.59.86 10018 IDgbBCwxP
  2⤵
  PID:2380
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" VenomHVNC 84.17.59.86 10018 IDgbBCwxP
  2⤵
  PID:1752
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" VenomHVNC 84.17.59.86 10018 IDgbBCwxP
  2⤵
  PID:1988
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" VenomHVNC 84.17.59.86 10018 IDgbBCwxP
  2⤵
  PID:1972

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/2136-0-0x000007FEF5963000-0x000007FEF5964000-memory.dmp

Filesize
4KB

Download
memory/2136-1-0x0000000000F80000-0x0000000000FA8000-memory.dmp

Filesize
160KB

Download
memory/2356-5-0x0000000002A70000-0x0000000002A80000-memory.dmp

Filesize
64KB

Download