Analysis
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max time kernel
150s -
max time network
29s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
01-02-2023 04:01
Static task
static1
Behavioral task
behavioral1
Sample
1.0.0.6_nmmhkkegccagdldgiimedpiccmgmieda.crx
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
1.0.0.6_nmmhkkegccagdldgiimedpiccmgmieda.crx
Resource
win10v2004-20221111-en
General
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Target
1.0.0.6_nmmhkkegccagdldgiimedpiccmgmieda.crx
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Size
242KB
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MD5
541f52e24fe1ef9f8e12377a6ccae0c0
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SHA1
189898bb2dcae7d5a6057bc2d98b8b450afaebb6
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SHA256
81e3a4d43a73699e1b7781723f56b8717175c536685c5450122b30789464ad82
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SHA512
d779d78a15c5efca51ebd6b96a7ccb6d718741bdf7d9a37f53b2eb4b98aa1a78bc4cfa57d6e763aab97276c8f9088940ac0476690d4d46023ff4bf52f3326c88
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SSDEEP
3072:r+nmRykNgoldZ8GjJCiUXZSk+QSVh85PxEalRVHmcld9R6yYfEp4ABUGDcaKklrv:k3oF4Z4h45P99Fld9RBQYBVcaxlnfL
Malware Config
Signatures
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies registry class 10 IoCs
Processes:
rundll32.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\.crx rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\.crx\ = "crx_auto_file" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\crx_auto_file\shell\Read rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\crx_auto_file\shell rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_Classes\Local Settings rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\crx_auto_file rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\crx_auto_file\ rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\crx_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\"" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\crx_auto_file\shell\Read\command rundll32.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
AcroRd32.exepid process 1240 AcroRd32.exe -
Suspicious use of SetWindowsHookEx 3 IoCs
Processes:
AcroRd32.exepid process 1240 AcroRd32.exe 1240 AcroRd32.exe 1240 AcroRd32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
cmd.exerundll32.exedescription pid process target process PID 828 wrote to memory of 576 828 cmd.exe rundll32.exe PID 828 wrote to memory of 576 828 cmd.exe rundll32.exe PID 828 wrote to memory of 576 828 cmd.exe rundll32.exe PID 576 wrote to memory of 1240 576 rundll32.exe AcroRd32.exe PID 576 wrote to memory of 1240 576 rundll32.exe AcroRd32.exe PID 576 wrote to memory of 1240 576 rundll32.exe AcroRd32.exe PID 576 wrote to memory of 1240 576 rundll32.exe AcroRd32.exe
Processes
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C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\1.0.0.6_nmmhkkegccagdldgiimedpiccmgmieda.crx1⤵
- Suspicious use of WriteProcessMemory
PID:828 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\1.0.0.6_nmmhkkegccagdldgiimedpiccmgmieda.crx2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:576 -
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\1.0.0.6_nmmhkkegccagdldgiimedpiccmgmieda.crx"3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:1240