Analysis
- max time kernel
184s - max time network
211s - platform
windows10-2004_x64 - resource
win10v2004-20221111-en - resource tags
- submitted
30/11/2022, 01:13
General
- Target 969c1df3e14e383533012296cc054148563326d72a26949dc09f9838460eba16.exe
- Size 2.1MB
- Sample221130-blejtahe7w
- SHA256 969c1df3e14e383533012296cc054148563326d72a26949dc09f9838460eba16
Malware Config
Extracted
-
nymaim
-
45.139.105.171
-
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 1 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 9 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\969c1df3e14e383533012296cc054148563326d72a26949dc09f9838460eba16.exe"C:\Users\Admin\AppData\Local\Temp\969c1df3e14e383533012296cc054148563326d72a26949dc09f9838460eba16.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-HQ66J.tmp\is-46QU6.tmp"C:\Users\Admin\AppData\Local\Temp\is-HQ66J.tmp\is-46QU6.tmp" /SL4 $B014A "C:\Users\Admin\AppData\Local\Temp\969c1df3e14e383533012296cc054148563326d72a26949dc09f9838460eba16.exe" 1918877 517122⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
-
C:\Program Files (x86)\PrintFolders\PrintFolders.exe"C:\Program Files (x86)\PrintFolders\PrintFolders.exe"3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Roaming\{6eb576c0-6208-11ed-9190-806e6f6e6963}\UNEXHmxU1pIcX.exe4⤵
- Executes dropped EXE
-
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
PrintFolders.exe
PrintFolders.exe
_iscrypt.dll
is-46QU6.tmp
is-46QU6.tmp
UNEXHmxU1pIcX.exe
UNEXHmxU1pIcX.exe
memory/2040-132-0x0000000000400000-0x0000000000413000-memory.dmp
memory/2040-138-0x0000000000400000-0x0000000000413000-memory.dmp
memory/2356-142-0x0000000000400000-0x0000000001549000-memory.dmp
memory/2356-144-0x0000000000400000-0x0000000001549000-memory.dmp
memory/2356-145-0x0000000000400000-0x0000000001549000-memory.dmp
memory/2356-143-0x0000000000400000-0x0000000001549000-memory.dmp
memory/2356-149-0x0000000000400000-0x0000000001549000-memory.dmp