Analysis
- max time kernel
43s - max time network
46s - platform
windows7_x64 - resource
win7-20220812-en - resource tags
- submitted
16/09/2022, 04:35
General
- Target file.exe
- Size 372KB
- Sample220916-e7namaaddk
- SHA256 39e18ae1185a6b9229d15f8670f52e2ed098485e274e93fd9a48d30eab4a9a8d
Score
10/10
Malware Config
Extracted
Family
-
nymaim
C2
-
208.67.104.97
-
85.31.46.167
Signatures
- NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
- Deletes itself 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Kills process with taskkill 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "file.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\file.exe" & exit2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\taskkill.exetaskkill /im "file.exe" /f3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/900-54-0x0000000076121000-0x0000000076123000-memory.dmp
memory/900-56-0x0000000000250000-0x0000000000293000-memory.dmp
memory/900-55-0x00000000006CB000-0x00000000006F3000-memory.dmp
memory/900-57-0x0000000000400000-0x00000000005B9000-memory.dmp
memory/900-59-0x00000000006CB000-0x00000000006F3000-memory.dmp
memory/900-60-0x0000000000400000-0x00000000005B9000-memory.dmp