Analysis
- max time kernel
147s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
27/03/2024, 11:16
General
- Target 22b7e30240f2ba7b9f8dc28b8ca8a3e8.exe
- Size 252KB
- Sample240327-nc5e4aah59
- SHA256 9120566b5096fc5643a1b64c2ef29fd034c245d52ec244cdf06b6e312e299acf
Malware Config
Extracted
-
stealc
-
http://185.172.128.26
-
url_path
/f993692117a3fda2.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 1 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 1 IoCs
- 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 4 IoCs
- Suspicious use of WriteProcessMemory 12 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\22b7e30240f2ba7b9f8dc28b8ca8a3e8.exe"C:\Users\Admin\AppData\Local\Temp\22b7e30240f2ba7b9f8dc28b8ca8a3e8.exe"1⤵
- Checks computer location settings
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\JJJJKEHCAK.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\JJJJKEHCAK.exe"C:\Users\Admin\AppData\Local\Temp\JJJJKEHCAK.exe"3⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
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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\JJJJKEHCAK.exe4⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\PING.EXEping 2.2.2.2 -n 1 -w 30005⤵
- Runs ping.exe
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 22922⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1180 -ip 11801⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
Are.docx
mozglue.dll
nss3.dll
JJJJKEHCAK.exe
memory/1180-67-0x0000000000400000-0x000000000063B000-memory.dmp
memory/1180-85-0x0000000000400000-0x000000000063B000-memory.dmp
memory/1180-48-0x0000000000400000-0x000000000063B000-memory.dmp
memory/1180-49-0x0000000000400000-0x000000000063B000-memory.dmp
memory/1180-56-0x0000000000400000-0x000000000063B000-memory.dmp
memory/1180-63-0x0000000000400000-0x000000000063B000-memory.dmp
memory/1180-1-0x0000000000770000-0x0000000000870000-memory.dmp
memory/1180-5-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/1180-4-0x0000000000400000-0x000000000063B000-memory.dmp
memory/1180-44-0x0000000000770000-0x0000000000870000-memory.dmp
memory/1180-2-0x0000000000400000-0x000000000063B000-memory.dmp
memory/1180-97-0x0000000000400000-0x000000000063B000-memory.dmp
memory/1180-3-0x0000000002390000-0x00000000023B7000-memory.dmp
memory/1180-110-0x0000000000400000-0x000000000063B000-memory.dmp
memory/3708-106-0x00000000005C0000-0x00000000005E0000-memory.dmp
memory/3708-108-0x0000000004F30000-0x0000000004F40000-memory.dmp
memory/3708-107-0x00000000721B0000-0x0000000072960000-memory.dmp
memory/3708-112-0x00000000721B0000-0x0000000072960000-memory.dmp