Analysis
- max time kernel
58s - max time network
61s - platform
windows7_x64 - resource
win7-20220812-en - resource tags
- submitted
21/11/2022, 06:32
General
- Target file.exe
- Size 1.3MB
- Sample221121-hal8vafe66
- SHA256 d27f800c83aa5eb6f4f0bb0003bcbfd2437afb3bc8442350ad29b8acf8421078
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 10 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.
- Kills process with taskkill 1 IoCs
- Suspicious behavior: EnumeratesProcesses 3 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 35 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-MODHA.tmp\is-M6L2M.tmp"C:\Users\Admin\AppData\Local\Temp\is-MODHA.tmp\is-M6L2M.tmp" /SL4 $60124 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1091227 517122⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Program Files (x86)\PrintFolders\PrintFolders.exe"C:\Program Files (x86)\PrintFolders\PrintFolders.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\QM34oocO.exe4⤵
- Executes dropped EXE
- Loads dropped DLL
-
-
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "PrintFolders.exe" /f & erase "C:\Program Files (x86)\PrintFolders\PrintFolders.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\taskkill.exetaskkill /im "PrintFolders.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
-
-
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
PrintFolders.exe
PrintFolders.exe
is-M6L2M.tmp
is-M6L2M.tmp
QM34oocO.exe
QM34oocO.exe
PrintFolders.exe
PrintFolders.exe
PrintFolders.exe
_iscrypt.dll
_shfoldr.dll
_shfoldr.dll
is-M6L2M.tmp
QM34oocO.exe
QM34oocO.exe
QM34oocO.exe
memory/804-73-0x0000000003170000-0x00000000040EF000-memory.dmp
memory/804-90-0x0000000003170000-0x00000000040EF000-memory.dmp
memory/1648-72-0x0000000000400000-0x0000000000413000-memory.dmp
memory/1648-55-0x0000000000400000-0x0000000000413000-memory.dmp
memory/1648-99-0x0000000000400000-0x0000000000413000-memory.dmp
memory/1648-54-0x0000000075811000-0x0000000075813000-memory.dmp
memory/1756-78-0x0000000000400000-0x000000000137F000-memory.dmp
memory/1756-77-0x0000000000400000-0x000000000137F000-memory.dmp
memory/1756-76-0x0000000001A10000-0x000000000298F000-memory.dmp
memory/1756-75-0x0000000001A10000-0x000000000298F000-memory.dmp
memory/1756-86-0x0000000010000000-0x000000001001B000-memory.dmp
memory/1756-74-0x0000000000400000-0x000000000137F000-memory.dmp
memory/1756-91-0x0000000000400000-0x000000000137F000-memory.dmp
memory/1756-92-0x0000000001A10000-0x000000000298F000-memory.dmp
memory/1756-93-0x0000000000400000-0x000000000137F000-memory.dmp
memory/1756-98-0x0000000000400000-0x000000000137F000-memory.dmp