arrowrat | a73f67009d77906b2dfee216b4e7cb940eef13304c22e909b65cd2834e291b1a

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
11-08-2024 06:59

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General

Target

b41b657eb9883b9d2de872e7200d4fd2.exe
Size

158KB
MD5

b41b657eb9883b9d2de872e7200d4fd2
SHA1

a9b102d7b76416bc4beaa2702e3b90206c323b66
SHA256

a73f67009d77906b2dfee216b4e7cb940eef13304c22e909b65cd2834e291b1a
SHA512

eb290a85597c934485887d7ccf21642042ceff82b052784543a55569af404b60fc9d42dcd42da027750d439a55a928705d4f9c1e40824e8f0b91d2e92110d73f
SSDEEP

3072:5bzwH+0OoCthfbEFtbcfjF45gjryKKqH6JY2doszEmQotEPPcfP6OO8Y:5bzwe0ODhTEPgnjuIJzo+PPcfP6B8

Score

10^/10

arrowrat client persistence rat

Malware Config

Extracted

Family

arrowrat

Botnet

Client

and-statements.gl.at.ply.gg:43442

Mutex

KRSSneMpK

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

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

description	ioc	Process
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
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_Classes\Local Settings	explorer.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

pid	Process
2636	b41b657eb9883b9d2de872e7200d4fd2.exe
2636	b41b657eb9883b9d2de872e7200d4fd2.exe
2636	b41b657eb9883b9d2de872e7200d4fd2.exe
2636	b41b657eb9883b9d2de872e7200d4fd2.exe
2636	b41b657eb9883b9d2de872e7200d4fd2.exe
2636	b41b657eb9883b9d2de872e7200d4fd2.exe
2636	b41b657eb9883b9d2de872e7200d4fd2.exe
2636	b41b657eb9883b9d2de872e7200d4fd2.exe
2636	b41b657eb9883b9d2de872e7200d4fd2.exe
2636	b41b657eb9883b9d2de872e7200d4fd2.exe
2636	b41b657eb9883b9d2de872e7200d4fd2.exe
2636	b41b657eb9883b9d2de872e7200d4fd2.exe
2636	b41b657eb9883b9d2de872e7200d4fd2.exe
2636	b41b657eb9883b9d2de872e7200d4fd2.exe
2636	b41b657eb9883b9d2de872e7200d4fd2.exe
2636	b41b657eb9883b9d2de872e7200d4fd2.exe
2636	b41b657eb9883b9d2de872e7200d4fd2.exe
2636	b41b657eb9883b9d2de872e7200d4fd2.exe
2636	b41b657eb9883b9d2de872e7200d4fd2.exe
2636	b41b657eb9883b9d2de872e7200d4fd2.exe
2636	b41b657eb9883b9d2de872e7200d4fd2.exe
2636	b41b657eb9883b9d2de872e7200d4fd2.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	2636	b41b657eb9883b9d2de872e7200d4fd2.exe
Token: SeShutdownPrivilege	2900	explorer.exe
Token: SeShutdownPrivilege	2900	explorer.exe
Token: SeShutdownPrivilege	2900	explorer.exe
Token: SeShutdownPrivilege	2900	explorer.exe
Token: SeShutdownPrivilege	2900	explorer.exe
Token: SeShutdownPrivilege	2900	explorer.exe
Token: SeShutdownPrivilege	2900	explorer.exe
Token: SeShutdownPrivilege	2900	explorer.exe
Token: SeShutdownPrivilege	2900	explorer.exe
Token: SeShutdownPrivilege	2900	explorer.exe
Token: SeShutdownPrivilege	2900	explorer.exe

Suspicious use of FindShellTrayWindow 27 IoCs

pid	Process
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe

Suspicious use of SendNotifyMessage 17 IoCs

pid	Process
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe
2900	explorer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2636	b41b657eb9883b9d2de872e7200d4fd2.exe

Suspicious use of WriteProcessMemory 46 IoCs

description	pid	Process	procid_target
PID 2636 wrote to memory of 2900	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	31
PID 2636 wrote to memory of 2900	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	31
PID 2636 wrote to memory of 2900	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	31
PID 2900 wrote to memory of 2328	2900	explorer.exe	33
PID 2900 wrote to memory of 2328	2900	explorer.exe	33
PID 2900 wrote to memory of 2328	2900	explorer.exe	33
PID 2636 wrote to memory of 1764	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	32
PID 2636 wrote to memory of 1764	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	32
PID 2636 wrote to memory of 1764	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	32
PID 2636 wrote to memory of 1764	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	32
PID 2636 wrote to memory of 1808	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	34
PID 2636 wrote to memory of 1808	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	34
PID 2636 wrote to memory of 1808	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	34
PID 2636 wrote to memory of 1808	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	34
PID 2636 wrote to memory of 2432	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	35
PID 2636 wrote to memory of 2432	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	35
PID 2636 wrote to memory of 2432	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	35
PID 2636 wrote to memory of 2432	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	35
PID 2636 wrote to memory of 2172	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	36
PID 2636 wrote to memory of 2172	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	36
PID 2636 wrote to memory of 2172	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	36
PID 2636 wrote to memory of 2172	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	36
PID 2636 wrote to memory of 2660	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	37
PID 2636 wrote to memory of 2660	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	37
PID 2636 wrote to memory of 2660	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	37
PID 2636 wrote to memory of 2660	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	37
PID 2636 wrote to memory of 1752	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	38
PID 2636 wrote to memory of 1752	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	38
PID 2636 wrote to memory of 1752	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	38
PID 2636 wrote to memory of 1752	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	38
PID 2636 wrote to memory of 2692	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	39
PID 2636 wrote to memory of 2692	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	39
PID 2636 wrote to memory of 2692	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	39
PID 2636 wrote to memory of 2692	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	39
PID 2636 wrote to memory of 2656	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	40
PID 2636 wrote to memory of 2656	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	40
PID 2636 wrote to memory of 2656	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	40
PID 2636 wrote to memory of 2656	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	40
PID 2636 wrote to memory of 2744	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	41
PID 2636 wrote to memory of 2744	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	41
PID 2636 wrote to memory of 2744	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	41
PID 2636 wrote to memory of 2744	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	41
PID 2636 wrote to memory of 2760	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	42
PID 2636 wrote to memory of 2760	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	42
PID 2636 wrote to memory of 2760	2636	b41b657eb9883b9d2de872e7200d4fd2.exe	42
PID 2636 wrote to memory of 2760	2636	b41b657eb9883b9d2de872e7200d4fd2.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\b41b657eb9883b9d2de872e7200d4fd2.exe
"C:\Users\Admin\AppData\Local\Temp\b41b657eb9883b9d2de872e7200d4fd2.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2636
- 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:2900
- - C:\Windows\system32\ctfmon.exe
    ctfmon.exe
    3⤵
    PID:2328
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client and-statements.gl.at.ply.gg 43442 KRSSneMpK
  2⤵
  PID:1764
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client and-statements.gl.at.ply.gg 43442 KRSSneMpK
  2⤵
  PID:1808
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client and-statements.gl.at.ply.gg 43442 KRSSneMpK
  2⤵
  PID:2432
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client and-statements.gl.at.ply.gg 43442 KRSSneMpK
  2⤵
  PID:2172
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client and-statements.gl.at.ply.gg 43442 KRSSneMpK
  2⤵
  PID:2660
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client and-statements.gl.at.ply.gg 43442 KRSSneMpK
  2⤵
  PID:1752
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client and-statements.gl.at.ply.gg 43442 KRSSneMpK
  2⤵
  PID:2692
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client and-statements.gl.at.ply.gg 43442 KRSSneMpK
  2⤵
  PID:2656
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client and-statements.gl.at.ply.gg 43442 KRSSneMpK
  2⤵
  PID:2744
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client and-statements.gl.at.ply.gg 43442 KRSSneMpK
  2⤵
  PID:2760

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

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Downloads

memory/2636-0-0x000007FEF6793000-0x000007FEF6794000-memory.dmp

Filesize
4KB

Download
memory/2636-1-0x00000000001D0000-0x00000000001FE000-memory.dmp

Filesize
184KB

Download
memory/2636-2-0x000007FEF6790000-0x000007FEF717C000-memory.dmp

Filesize
9.9MB

Download
memory/2636-3-0x000007FEF6793000-0x000007FEF6794000-memory.dmp

Filesize
4KB

Download
memory/2636-4-0x000007FEF6790000-0x000007FEF717C000-memory.dmp

Filesize
9.9MB

Download
memory/2900-8-0x0000000004060000-0x0000000004070000-memory.dmp

Filesize
64KB

Download