Analysis
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max time kernel
30s -
max time network
7s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
17-11-2022 08:42
Behavioral task
behavioral1
Sample
Arhvn.exe
Resource
win7-20220812-en
windows7-x64
9 signatures
30 seconds
Behavioral task
behavioral2
Sample
Arhvn.exe
Resource
win10v2004-20221111-en
windows10-2004-x64
13 signatures
30 seconds
General
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Target
Arhvn.exe
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Size
90KB
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MD5
65bac4256dde1c7d987afa8ef8e9a1c4
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SHA1
222922b2ba2f43cfc2049ca578b256d486fcf956
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SHA256
f51fe3720ba2e618cc10e6045a948880f6ca2c802466684332bf744e526059e7
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SHA512
7d08d19af3eff1a3899a4d039ba273ead5267e075af32b9755cd61ad5349bf6e6c87cbf9cca92893da7c4acecb42d9867f447f2139384e5de86b235c77125d27
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SSDEEP
1536:ubRiQMn57SK3bUzZdQ1iIMvnZlbLxjV3AGq5gWlocT1wzySsd9NJ33L:ubRA57SKsstcnZTJQDgWPaySsdH57
Score
10/10
Malware Config
Extracted
Family
arrowrat
Botnet
ArrowRAT
C2
arhvn.duckdns.org:5555
Mutex
fKHUsQQAb.exe
Signatures
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Modifies Installed Components in the registry 2 TTPs 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Active Setup\Installed Components explorer.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1652 set thread context of 1640 1652 Arhvn.exe 31 -
Modifies registry class 5 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_Classes\Local Settings explorer.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell explorer.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff explorer.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 1652 Arhvn.exe 1652 Arhvn.exe 1652 Arhvn.exe -
Suspicious use of AdjustPrivilegeToken 15 IoCs
description pid Process Token: SeDebugPrivilege 1652 Arhvn.exe Token: SeShutdownPrivilege 1716 explorer.exe Token: SeShutdownPrivilege 1716 explorer.exe Token: SeShutdownPrivilege 1716 explorer.exe Token: SeShutdownPrivilege 1716 explorer.exe Token: SeShutdownPrivilege 1716 explorer.exe Token: SeShutdownPrivilege 1716 explorer.exe Token: SeShutdownPrivilege 1716 explorer.exe Token: SeShutdownPrivilege 1716 explorer.exe Token: 33 1756 AUDIODG.EXE Token: SeIncBasePriorityPrivilege 1756 AUDIODG.EXE Token: 33 1756 AUDIODG.EXE Token: SeIncBasePriorityPrivilege 1756 AUDIODG.EXE Token: SeShutdownPrivilege 1716 explorer.exe Token: SeShutdownPrivilege 1716 explorer.exe -
Suspicious use of FindShellTrayWindow 23 IoCs
pid Process 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe -
Suspicious use of SendNotifyMessage 16 IoCs
pid Process 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe 1716 explorer.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 1652 wrote to memory of 1716 1652 Arhvn.exe 28 PID 1652 wrote to memory of 1716 1652 Arhvn.exe 28 PID 1652 wrote to memory of 1716 1652 Arhvn.exe 28 PID 1652 wrote to memory of 1716 1652 Arhvn.exe 28 PID 1716 wrote to memory of 1708 1716 explorer.exe 30 PID 1716 wrote to memory of 1708 1716 explorer.exe 30 PID 1716 wrote to memory of 1708 1716 explorer.exe 30 PID 1652 wrote to memory of 1368 1652 Arhvn.exe 29 PID 1652 wrote to memory of 1368 1652 Arhvn.exe 29 PID 1652 wrote to memory of 1368 1652 Arhvn.exe 29 PID 1652 wrote to memory of 1368 1652 Arhvn.exe 29 PID 1652 wrote to memory of 1640 1652 Arhvn.exe 31 PID 1652 wrote to memory of 1640 1652 Arhvn.exe 31 PID 1652 wrote to memory of 1640 1652 Arhvn.exe 31 PID 1652 wrote to memory of 1640 1652 Arhvn.exe 31 PID 1652 wrote to memory of 1640 1652 Arhvn.exe 31 PID 1652 wrote to memory of 1640 1652 Arhvn.exe 31 PID 1652 wrote to memory of 1640 1652 Arhvn.exe 31 PID 1652 wrote to memory of 1640 1652 Arhvn.exe 31 PID 1652 wrote to memory of 1640 1652 Arhvn.exe 31
Processes
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C:\Users\Admin\AppData\Local\Temp\Arhvn.exe"C:\Users\Admin\AppData\Local\Temp\Arhvn.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1652 -
C:\Windows\explorer.exe"C:\Windows\explorer.exe"2⤵
- Modifies Installed Components in the registry
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1716 -
C:\Windows\system32\ctfmon.exectfmon.exe3⤵PID:1708
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" ArrowRAT arhvn.duckdns.org 5555 fKHUsQQAb.exe2⤵PID:1368
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" ArrowRAT arhvn.duckdns.org 5555 fKHUsQQAb.exe2⤵PID:1640
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C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x5581⤵
- Suspicious use of AdjustPrivilegeToken
PID:1756