Analysis
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max time kernel
150s -
max time network
45s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
16-06-2022 18:41
Static task
static1
Behavioral task
behavioral1
Sample
95b2fda9f43bb360e283a1c049fd06c686646415a0e9ebd93943df6d76dddd7e.dex
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
95b2fda9f43bb360e283a1c049fd06c686646415a0e9ebd93943df6d76dddd7e.dex
Resource
win10v2004-20220414-en
General
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Target
95b2fda9f43bb360e283a1c049fd06c686646415a0e9ebd93943df6d76dddd7e.dex
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Size
1.5MB
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MD5
4fa48f514dd9d46e00bb33becb89f6be
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SHA1
19148c24e53b6b04020acedae9f60eed4f9db943
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SHA256
95b2fda9f43bb360e283a1c049fd06c686646415a0e9ebd93943df6d76dddd7e
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SHA512
ea0c4dd811fe357429b735a6177d729469e72d68d45319eadfd1944a9caa4a0f341ee85e69baff6e86971de8ee779828e1204408c63acfb245fc68e62cfb7e3c
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
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000_CLASSES\dex_auto_file rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000_CLASSES\dex_auto_file\ rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000_CLASSES\dex_auto_file\shell\Read rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000_CLASSES\dex_auto_file\shell rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000_Classes\Local Settings rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000_CLASSES\.dex rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000_CLASSES\.dex\ = "dex_auto_file" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000_CLASSES\dex_auto_file\shell\Read\command rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000_CLASSES\dex_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\"" rundll32.exe -
Suspicious use of SetWindowsHookEx 3 IoCs
pid Process 1008 AcroRd32.exe 1008 AcroRd32.exe 1008 AcroRd32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 1052 wrote to memory of 1724 1052 cmd.exe 29 PID 1052 wrote to memory of 1724 1052 cmd.exe 29 PID 1052 wrote to memory of 1724 1052 cmd.exe 29 PID 1724 wrote to memory of 1008 1724 rundll32.exe 30 PID 1724 wrote to memory of 1008 1724 rundll32.exe 30 PID 1724 wrote to memory of 1008 1724 rundll32.exe 30 PID 1724 wrote to memory of 1008 1724 rundll32.exe 30
Processes
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C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\95b2fda9f43bb360e283a1c049fd06c686646415a0e9ebd93943df6d76dddd7e.dex1⤵
- Suspicious use of WriteProcessMemory
PID:1052 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\95b2fda9f43bb360e283a1c049fd06c686646415a0e9ebd93943df6d76dddd7e.dex2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1724 -
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\95b2fda9f43bb360e283a1c049fd06c686646415a0e9ebd93943df6d76dddd7e.dex"3⤵
- Suspicious use of SetWindowsHookEx
PID:1008
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