Analysis
- max time kernel
131s - max time network
137s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
16/05/2024, 02:39
General
- Target 9307ef90f4e90897e00d4c071fa7db83.exe
- Size 386KB
- Sample240516-c5aweagh62
- SHA256 2183534537e54d7b42c32edbe091ad459f9c323a12092925527e1a45070ca61f
Malware Config
Extracted
-
stealc
-
default100
-
http://185.172.128.150
-
url_path
/c698e1bc8a2f5e6d.php
Signatures
- Stealc
Stealc is an infostealer written in C++.
- Downloads MZ/PE file
- Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 2 IoCs
- Loads dropped DLL 2 IoCs
- Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 2 IoCs
- Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 28 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of FindShellTrayWindow 7 IoCs
- Suspicious use of SendNotifyMessage 7 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\9307ef90f4e90897e00d4c071fa7db83.exe"C:\Users\Admin\AppData\Local\Temp\9307ef90f4e90897e00d4c071fa7db83.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\uq8.0.exe"C:\Users\Admin\AppData\Local\Temp\uq8.0.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2244 -s 20083⤵
- Program crash
-
-
-
C:\Users\Admin\AppData\Local\Temp\uq8.1.exe"C:\Users\Admin\AppData\Local\Temp\uq8.1.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\iolo\dm\SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe"C:\Users\Admin\AppData\Local\Temp\iolo\dm\SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe" /eieci=11A12794-499E-4FA0-A281-A9A9AA8B2685 /eipi=5488CB36-BE62-4606-B07B-2EE938868BD13⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 944 -s 11442⤵
- Program crash
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 944 -ip 9441⤵
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 2244 -ip 22441⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
Are.docx
mozglue.dll
nss3.dll
ioloDMLog.txt
uq8.0.exe
uq8.1.exe
memory/944-75-0x0000000000400000-0x000000000046F000-memory.dmp
memory/944-53-0x0000000000400000-0x000000000259D000-memory.dmp
memory/944-1-0x0000000002620000-0x0000000002720000-memory.dmp
memory/944-74-0x0000000000400000-0x000000000259D000-memory.dmp
memory/944-2-0x00000000041B0000-0x000000000421C000-memory.dmp
memory/944-3-0x0000000000400000-0x000000000046F000-memory.dmp
memory/1524-116-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/1524-139-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/2244-98-0x0000000000400000-0x0000000000793000-memory.dmp
memory/2244-14-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/2244-13-0x0000000000400000-0x0000000000793000-memory.dmp
memory/2244-141-0x0000000000400000-0x0000000000793000-memory.dmp
memory/2956-144-0x0000025200130000-0x0000025200140000-memory.dmp
memory/2956-153-0x00000252004A0000-0x00000252004AA000-memory.dmp
memory/2956-142-0x00000252623D0000-0x0000025265C04000-memory.dmp
memory/2956-143-0x0000025200390000-0x000002520049A000-memory.dmp
memory/2956-146-0x0000025200140000-0x0000025200154000-memory.dmp
memory/2956-147-0x0000025200160000-0x0000025200184000-memory.dmp
memory/2956-148-0x0000025200180000-0x000002520018A000-memory.dmp
memory/2956-149-0x0000025200740000-0x000002520076A000-memory.dmp
memory/2956-150-0x0000025200780000-0x0000025200832000-memory.dmp
memory/2956-151-0x000002527FFF0000-0x0000025280040000-memory.dmp
memory/2956-152-0x00000252677D0000-0x00000252677F2000-memory.dmp
memory/2956-145-0x0000025200150000-0x000002520015C000-memory.dmp
memory/2956-157-0x0000025200830000-0x0000025200B30000-memory.dmp
memory/2956-159-0x0000025265FB0000-0x0000025265FB8000-memory.dmp
memory/2956-160-0x0000025280080000-0x00000252800B8000-memory.dmp
memory/2956-161-0x0000025265FC0000-0x0000025265FCE000-memory.dmp
memory/2956-162-0x0000025265FE0000-0x0000025265FE8000-memory.dmp
memory/2956-163-0x0000025204C50000-0x0000025204C5A000-memory.dmp
memory/2956-164-0x0000025205D40000-0x0000025205DA2000-memory.dmp
memory/2956-165-0x0000025204C70000-0x0000025204C92000-memory.dmp
memory/2956-166-0x00000252062D0000-0x00000252067F8000-memory.dmp
memory/2956-169-0x0000025204C90000-0x0000025204C9C000-memory.dmp
memory/2956-170-0x0000025280140000-0x00000252801B6000-memory.dmp
memory/2956-171-0x0000025280040000-0x000002528005E000-memory.dmp