Analysis
- max time kernel
56s - max time network
60s - platform
windows7_x64 - resource
win7-20220901-en - resource tags
- submitted
15/11/2022, 04:17
General
- Target file.exe
- Size 2.1MB
- Sample221115-ewcprabc4x
- SHA256 1b551d806cd45acd4d59bf6a3d56930a0c50d3f304c5cc16e58b7996af2a20fc
Malware Config
Extracted
-
nymaim
-
45.139.105.171
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85.31.46.167
Signatures
- NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 6 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Drops file in Program Files directory 12 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 behavior: EnumeratesProcesses 3 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 23 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-C4EUC.tmp\is-3MJ4Q.tmp"C:\Users\Admin\AppData\Local\Temp\is-C4EUC.tmp\is-3MJ4Q.tmp" /SL4 $D0152 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1928342 2104322⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
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C:\Program Files (x86)\glSearcher\glsearcher80.exe"C:\Program Files (x86)\glSearcher\glsearcher80.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\dK7vJvWc5Twd.exe4⤵
- Executes dropped EXE
-
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "glsearcher80.exe" /f & erase "C:\Program Files (x86)\glSearcher\glsearcher80.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\taskkill.exetaskkill /im "glsearcher80.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
glsearcher80.exe
glsearcher80.exe
is-3MJ4Q.tmp
is-3MJ4Q.tmp
dK7vJvWc5Twd.exe
glsearcher80.exe
_iscrypt.dll
_shfoldr.dll
_shfoldr.dll
is-3MJ4Q.tmp
dK7vJvWc5Twd.exe
memory/1056-54-0x0000000075A71000-0x0000000075A73000-memory.dmp
memory/1056-55-0x0000000000400000-0x000000000043A000-memory.dmp
memory/1056-65-0x0000000000400000-0x000000000043A000-memory.dmp
memory/1056-85-0x0000000000400000-0x000000000043A000-memory.dmp
memory/1104-69-0x0000000003250000-0x00000000042F8000-memory.dmp
memory/1964-71-0x0000000000400000-0x00000000014A8000-memory.dmp
memory/1964-81-0x0000000000400000-0x00000000014A8000-memory.dmp
memory/1964-77-0x0000000010000000-0x000000001001B000-memory.dmp
memory/1964-73-0x0000000000400000-0x00000000014A8000-memory.dmp
memory/1964-84-0x0000000000400000-0x00000000014A8000-memory.dmp
memory/1964-70-0x0000000000400000-0x00000000014A8000-memory.dmp