Analysis
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max time kernel
43s -
max time network
45s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
29/12/2022, 12:17
Static task
static1
Behavioral task
behavioral1
Sample
8cb2f80304f1f188fb8769e9ba089a1f.exe
Resource
win7-20220812-en
6 signatures
150 seconds
General
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Target
8cb2f80304f1f188fb8769e9ba089a1f.exe
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Size
318KB
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MD5
8cb2f80304f1f188fb8769e9ba089a1f
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SHA1
e3f3542bafcfb7b7efba45ccb719e607ff462d9c
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SHA256
f3a7d831c9fa8577a6dffae63ca18f8c05274b49a5a0f3a6091165fe1a212d85
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SHA512
cf4f6db594e2b7da74b66d4b874988ed52bbe3914bc2d180ecb72d38d19fe89472d1cd6739bff0379772f2d321a0eb2427f25d12ea81b236692690a599b5c090
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SSDEEP
6144:i0LTNZRJ5OkhT01z2Qnn+FfYcbdhA3xqMVi3tm:FPVOkm1z2s+vdAqii3tm
Malware Config
Extracted
Family
nymaim
C2
45.139.105.171
85.31.46.167
Signatures
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Deletes itself 1 IoCs
pid Process 1996 cmd.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Kills process with taskkill 1 IoCs
pid Process 1780 taskkill.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1780 taskkill.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 1808 wrote to memory of 1996 1808 8cb2f80304f1f188fb8769e9ba089a1f.exe 27 PID 1808 wrote to memory of 1996 1808 8cb2f80304f1f188fb8769e9ba089a1f.exe 27 PID 1808 wrote to memory of 1996 1808 8cb2f80304f1f188fb8769e9ba089a1f.exe 27 PID 1808 wrote to memory of 1996 1808 8cb2f80304f1f188fb8769e9ba089a1f.exe 27 PID 1996 wrote to memory of 1780 1996 cmd.exe 29 PID 1996 wrote to memory of 1780 1996 cmd.exe 29 PID 1996 wrote to memory of 1780 1996 cmd.exe 29 PID 1996 wrote to memory of 1780 1996 cmd.exe 29
Processes
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C:\Users\Admin\AppData\Local\Temp\8cb2f80304f1f188fb8769e9ba089a1f.exe"C:\Users\Admin\AppData\Local\Temp\8cb2f80304f1f188fb8769e9ba089a1f.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:1808 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "8cb2f80304f1f188fb8769e9ba089a1f.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\8cb2f80304f1f188fb8769e9ba089a1f.exe" & exit2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:1996 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "8cb2f80304f1f188fb8769e9ba089a1f.exe" /f3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1780
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