Analysis
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max time kernel
121s -
max time network
125s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
21/05/2024, 05:30
Static task
static1
Behavioral task
behavioral1
Sample
clearNohupLog.sh
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
clearNohupLog.sh
Resource
win10v2004-20240508-en
General
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Target
clearNohupLog.sh
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Size
61B
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MD5
eceb52cc06cfef14431e1888a4507a42
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SHA1
f16096a3c0ed09e66d6a2ea7e83fce5c472c8f12
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SHA256
7ffd48b6123a4c6785e2aae1ab774a2b262110a070365a0d44ca68f33c2cec58
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SHA512
0ed0480b440b12db4478f6e899414d88eddf0beb6f7f2446c751711fbc54c6e4c298deef658c5cdaa56829ec18752a859758dc8bdb47882cff7c967f2060756e
Malware Config
Signatures
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Modifies registry class 9 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_Classes\Local Settings rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\sh_auto_file\ rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\.sh rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\.sh\ = "sh_auto_file" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\sh_auto_file\shell\Read\command rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\sh_auto_file rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\sh_auto_file\shell\Read rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\sh_auto_file\shell rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\sh_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\"" rundll32.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2700 AcroRd32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2700 AcroRd32.exe 2700 AcroRd32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 2236 wrote to memory of 2752 2236 cmd.exe 29 PID 2236 wrote to memory of 2752 2236 cmd.exe 29 PID 2236 wrote to memory of 2752 2236 cmd.exe 29 PID 2752 wrote to memory of 2700 2752 rundll32.exe 30 PID 2752 wrote to memory of 2700 2752 rundll32.exe 30 PID 2752 wrote to memory of 2700 2752 rundll32.exe 30 PID 2752 wrote to memory of 2700 2752 rundll32.exe 30
Processes
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C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\clearNohupLog.sh1⤵
- Suspicious use of WriteProcessMemory
PID:2236 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\clearNohupLog.sh2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2752 -
C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe"C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\clearNohupLog.sh"3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2700
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
3KB
MD52d7390777748467823635992d230eda1
SHA12c067d5eb09e66cf459521b40e202a8c48795deb
SHA256dec29115747d19d1e067d08cd2437973363c5828caf73e0a6ade193b931d1ecd
SHA512e351ca80b589b4d4a5983daeb84296bbc24b9da170aa1f7e041a8dd9a161b75fb4701cc0d2a264b2406af2d9d40f18f363322fa05aa0eabd2931a816d3fcb911