Analysis
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max time kernel
138s -
max time network
33s -
platform
windows7_x64 -
resource
win7-20230220-en -
resource tags
arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system -
submitted
05-03-2023 23:36
Behavioral task
behavioral1
Sample
bDCK.exe
Resource
win7-20230220-en
windows7-x64
9 signatures
150 seconds
Behavioral task
behavioral2
Sample
bDCK.exe
Resource
win10v2004-20230220-en
windows10-2004-x64
12 signatures
150 seconds
General
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Target
bDCK.exe
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Size
138KB
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MD5
e22c97f1931fdec29962ae778c5b44c3
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SHA1
7b0587f698a12619a735ce2536ec6a298ac92874
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SHA256
2380ff875da958af3a345764860a8d70761bdc4f9feb20c1b183a83b9cae1b0c
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SHA512
6f65b90401c650f66e22fb65c176edf73c09ef0bc0a34f7ee761fb984032e975cc3835dcdb22bc3d62c99678ad7a03b0fcbeb8dd679728ce49d035763c49c309
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SSDEEP
3072:2bvt5mz7Bqh1v59Y08mAjs0Ltel+qOeJHlpV8b+Y/Y0:2bv7S7BqjjYHdrqkL/
Score
10/10
Malware Config
Extracted
Family
arrowrat
Botnet
Y905DC
C2
windowsii.duckdns.org:1338
Mutex
QTZ3XG
Signatures
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Modifies Installed Components in the registry 2 TTPs 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000\Software\Microsoft\Active Setup\Installed Components explorer.exe -
Modifies registry class 5 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_Classes\Local Settings explorer.exe Key created \REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell explorer.exe Key created \REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff explorer.exe -
Suspicious behavior: EnumeratesProcesses 21 IoCs
pid Process 1992 bDCK.exe 1992 bDCK.exe 1992 bDCK.exe 1992 bDCK.exe 1992 bDCK.exe 1992 bDCK.exe 1992 bDCK.exe 1992 bDCK.exe 1992 bDCK.exe 1992 bDCK.exe 1992 bDCK.exe 1992 bDCK.exe 1992 bDCK.exe 1992 bDCK.exe 1992 bDCK.exe 1992 bDCK.exe 1992 bDCK.exe 1992 bDCK.exe 1992 bDCK.exe 1992 bDCK.exe 1992 bDCK.exe -
Suspicious use of AdjustPrivilegeToken 16 IoCs
description pid Process Token: SeDebugPrivilege 1992 bDCK.exe Token: SeShutdownPrivilege 2000 explorer.exe Token: SeShutdownPrivilege 2000 explorer.exe Token: SeShutdownPrivilege 2000 explorer.exe Token: SeShutdownPrivilege 2000 explorer.exe Token: SeShutdownPrivilege 2000 explorer.exe Token: SeShutdownPrivilege 2000 explorer.exe Token: SeShutdownPrivilege 2000 explorer.exe Token: SeShutdownPrivilege 2000 explorer.exe Token: 33 1304 AUDIODG.EXE Token: SeIncBasePriorityPrivilege 1304 AUDIODG.EXE Token: 33 1304 AUDIODG.EXE Token: SeIncBasePriorityPrivilege 1304 AUDIODG.EXE Token: SeShutdownPrivilege 2000 explorer.exe Token: SeShutdownPrivilege 2000 explorer.exe Token: SeShutdownPrivilege 2000 explorer.exe -
Suspicious use of FindShellTrayWindow 27 IoCs
pid Process 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe -
Suspicious use of SendNotifyMessage 15 IoCs
pid Process 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe 2000 explorer.exe -
Suspicious use of WriteProcessMemory 46 IoCs
description pid Process procid_target PID 1992 wrote to memory of 2000 1992 bDCK.exe 28 PID 1992 wrote to memory of 2000 1992 bDCK.exe 28 PID 1992 wrote to memory of 2000 1992 bDCK.exe 28 PID 2000 wrote to memory of 1660 2000 explorer.exe 30 PID 2000 wrote to memory of 1660 2000 explorer.exe 30 PID 2000 wrote to memory of 1660 2000 explorer.exe 30 PID 1992 wrote to memory of 1188 1992 bDCK.exe 29 PID 1992 wrote to memory of 1188 1992 bDCK.exe 29 PID 1992 wrote to memory of 1188 1992 bDCK.exe 29 PID 1992 wrote to memory of 1188 1992 bDCK.exe 29 PID 1992 wrote to memory of 2044 1992 bDCK.exe 31 PID 1992 wrote to memory of 2044 1992 bDCK.exe 31 PID 1992 wrote to memory of 2044 1992 bDCK.exe 31 PID 1992 wrote to memory of 2044 1992 bDCK.exe 31 PID 1992 wrote to memory of 1924 1992 bDCK.exe 32 PID 1992 wrote to memory of 1924 1992 bDCK.exe 32 PID 1992 wrote to memory of 1924 1992 bDCK.exe 32 PID 1992 wrote to memory of 1924 1992 bDCK.exe 32 PID 1992 wrote to memory of 520 1992 bDCK.exe 33 PID 1992 wrote to memory of 520 1992 bDCK.exe 33 PID 1992 wrote to memory of 520 1992 bDCK.exe 33 PID 1992 wrote to memory of 520 1992 bDCK.exe 33 PID 1992 wrote to memory of 268 1992 bDCK.exe 34 PID 1992 wrote to memory of 268 1992 bDCK.exe 34 PID 1992 wrote to memory of 268 1992 bDCK.exe 34 PID 1992 wrote to memory of 268 1992 bDCK.exe 34 PID 1992 wrote to memory of 1148 1992 bDCK.exe 35 PID 1992 wrote to memory of 1148 1992 bDCK.exe 35 PID 1992 wrote to memory of 1148 1992 bDCK.exe 35 PID 1992 wrote to memory of 1148 1992 bDCK.exe 35 PID 1992 wrote to memory of 1344 1992 bDCK.exe 36 PID 1992 wrote to memory of 1344 1992 bDCK.exe 36 PID 1992 wrote to memory of 1344 1992 bDCK.exe 36 PID 1992 wrote to memory of 1344 1992 bDCK.exe 36 PID 1992 wrote to memory of 660 1992 bDCK.exe 37 PID 1992 wrote to memory of 660 1992 bDCK.exe 37 PID 1992 wrote to memory of 660 1992 bDCK.exe 37 PID 1992 wrote to memory of 660 1992 bDCK.exe 37 PID 1992 wrote to memory of 1160 1992 bDCK.exe 38 PID 1992 wrote to memory of 1160 1992 bDCK.exe 38 PID 1992 wrote to memory of 1160 1992 bDCK.exe 38 PID 1992 wrote to memory of 1160 1992 bDCK.exe 38 PID 1992 wrote to memory of 2040 1992 bDCK.exe 39 PID 1992 wrote to memory of 2040 1992 bDCK.exe 39 PID 1992 wrote to memory of 2040 1992 bDCK.exe 39 PID 1992 wrote to memory of 2040 1992 bDCK.exe 39 -
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.
Processes
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C:\Users\Admin\AppData\Local\Temp\bDCK.exe"C:\Users\Admin\AppData\Local\Temp\bDCK.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1992 -
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:2000 -
C:\Windows\system32\ctfmon.exectfmon.exe3⤵PID:1660
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Y905DC windowsii.duckdns.org 1338 QTZ3XG2⤵PID:1188
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Y905DC windowsii.duckdns.org 1338 QTZ3XG2⤵PID:2044
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Y905DC windowsii.duckdns.org 1338 QTZ3XG2⤵PID:1924
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Y905DC windowsii.duckdns.org 1338 QTZ3XG2⤵PID:520
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Y905DC windowsii.duckdns.org 1338 QTZ3XG2⤵PID:268
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Y905DC windowsii.duckdns.org 1338 QTZ3XG2⤵PID:1148
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Y905DC windowsii.duckdns.org 1338 QTZ3XG2⤵PID:1344
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Y905DC windowsii.duckdns.org 1338 QTZ3XG2⤵PID:660
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Y905DC windowsii.duckdns.org 1338 QTZ3XG2⤵PID:1160
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Y905DC windowsii.duckdns.org 1338 QTZ3XG2⤵PID:2040
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C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x5001⤵
- Suspicious use of AdjustPrivilegeToken
PID:1304