Analysis
- max time kernel
150s - max time network
119s - platform
windows7_x64 - resource
win7-20240215-en - resource tags
- submitted
13/03/2024, 00:41
General
- Target $TEMP/syncUpd.exe
- Size 200KB
- Sample240313-a17cpshe84
- SHA256 13cd1152a19fdac6581cac2bd822f34bd3026ea1783ff231e299b6d28c046a6a
Malware Config
Extracted
-
stealc
-
http://185.172.128.145
-
url_path
/3cd2b41cbde8fc9c.php
Signatures
- Stealc
Stealc is an infostealer written in C++.
- Downloads MZ/PE file
- Executes dropped EXE 1 IoCs
- Loads dropped DLL 3 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
- Adds Run key to start application 2 TTPs 1 IoCs
- 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).
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Runs ping.exe 1 TTPs 1 IoCs
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 20 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\$TEMP\syncUpd.exe"C:\Users\Admin\AppData\Local\Temp\$TEMP\syncUpd.exe"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\HDBKJEGIEB.exe"2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\HDBKJEGIEB.exe"C:\Users\Admin\AppData\Local\Temp\HDBKJEGIEB.exe"3⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C ping 2.2.2.2 -n 1 -w 3000 > Nul & Del C:\Users\Admin\AppData\Local\Temp\HDBKJEGIEB.exe4⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\PING.EXEping 2.2.2.2 -n 1 -w 30005⤵
- Runs ping.exe
-
-
-
-
-
C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\DGCGDBGCAA.exe"2⤵
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
HDBKJEGIEB.exe
mozglue.dll
nss3.dll
memory/2016-112-0x0000000000460000-0x0000000000461000-memory.dmp
memory/2344-104-0x00000000002A0000-0x00000000002BE000-memory.dmp
memory/2344-110-0x00000000742C0000-0x00000000749AE000-memory.dmp
memory/2344-122-0x0000000004C40000-0x0000000004C80000-memory.dmp
memory/2344-121-0x00000000742C0000-0x00000000749AE000-memory.dmp
memory/2344-116-0x0000000004C40000-0x0000000004C80000-memory.dmp
memory/2832-74-0x0000000000730000-0x0000000000830000-memory.dmp
memory/2832-4-0x0000000000400000-0x000000000063B000-memory.dmp
memory/2832-70-0x0000000000400000-0x000000000063B000-memory.dmp
memory/2832-73-0x0000000000400000-0x000000000063B000-memory.dmp
memory/2832-7-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/2832-3-0x0000000000400000-0x000000000063B000-memory.dmp
memory/2832-1-0x0000000000730000-0x0000000000830000-memory.dmp
memory/2832-6-0x0000000000730000-0x0000000000830000-memory.dmp
memory/2832-2-0x0000000000250000-0x0000000000277000-memory.dmp
memory/2832-47-0x0000000000400000-0x000000000063B000-memory.dmp
memory/2832-40-0x0000000000400000-0x000000000063B000-memory.dmp
memory/2832-36-0x0000000000400000-0x000000000063B000-memory.dmp