Analysis
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max time kernel
42s -
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, 12:14
Static task
static1
Behavioral task
behavioral1
Sample
3a4fc843fea55ee700af9ca739e690e0.exe
Resource
win7-20220812-en
6 signatures
150 seconds
General
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Target
3a4fc843fea55ee700af9ca739e690e0.exe
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Size
371KB
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MD5
3a4fc843fea55ee700af9ca739e690e0
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SHA1
355974b4c3165312c59afda5f1f11224b73e25dc
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SHA256
80e0fad3bd2c2640bcb4aa073e7195a8fac77ac92b1085ca71cf975da3de6f9d
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SHA512
9d218a6f8f59674db9fa3ee433685b215cd8902eab33efb2dead60e0901be3a57199a4ee710b5ab2894f3cc241e591f05a78394f6089e8b36208ce4b91d6c6c9
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SSDEEP
6144:KOUR7L0Nr4NBsR1JjXjOvlNW62F5grTPPw7n1HbwZoV0J:mBgUsRHgde5Iw7
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 1932 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 1264 taskkill.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1264 taskkill.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 816 wrote to memory of 1932 816 3a4fc843fea55ee700af9ca739e690e0.exe 29 PID 816 wrote to memory of 1932 816 3a4fc843fea55ee700af9ca739e690e0.exe 29 PID 816 wrote to memory of 1932 816 3a4fc843fea55ee700af9ca739e690e0.exe 29 PID 816 wrote to memory of 1932 816 3a4fc843fea55ee700af9ca739e690e0.exe 29 PID 1932 wrote to memory of 1264 1932 cmd.exe 31 PID 1932 wrote to memory of 1264 1932 cmd.exe 31 PID 1932 wrote to memory of 1264 1932 cmd.exe 31 PID 1932 wrote to memory of 1264 1932 cmd.exe 31
Processes
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C:\Users\Admin\AppData\Local\Temp\3a4fc843fea55ee700af9ca739e690e0.exe"C:\Users\Admin\AppData\Local\Temp\3a4fc843fea55ee700af9ca739e690e0.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:816 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "3a4fc843fea55ee700af9ca739e690e0.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\3a4fc843fea55ee700af9ca739e690e0.exe" & exit2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:1932 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "3a4fc843fea55ee700af9ca739e690e0.exe" /f3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1264
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