Analysis
- max time kernel
147s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20240319-en - resource tags
- submitted
03/04/2024, 20:01
General
- Target 8123caec2807143ff545f4c3af6c2d46cf80faeb37d22588533bce130b18e4a5.exe
- Size 297KB
- Sample240403-yr1essbf37
- SHA256 8123caec2807143ff545f4c3af6c2d46cf80faeb37d22588533bce130b18e4a5
Malware Config
Extracted
-
stealc
-
http://185.172.128.209
-
url_path
/3cd2b41cbde8fc9c.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 16 IoCs
- Suspicious use of WriteProcessMemory 12 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\8123caec2807143ff545f4c3af6c2d46cf80faeb37d22588533bce130b18e4a5.exe"C:\Users\Admin\AppData\Local\Temp\8123caec2807143ff545f4c3af6c2d46cf80faeb37d22588533bce130b18e4a5.exe"1⤵
- Checks computer location settings
- 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\GIIIECBGDH.exe"2⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\GIIIECBGDH.exe"C:\Users\Admin\AppData\Local\Temp\GIIIECBGDH.exe"3⤵
- Checks computer location settings
- Executes dropped EXE
- 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\GIIIECBGDH.exe4⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\PING.EXEping 2.2.2.2 -n 1 -w 30005⤵
- Runs ping.exe
-
-
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1260 -s 21442⤵
- Program crash
-
-
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-appcompat-clear --mojo-platform-channel-handle=3216 --field-trial-handle=2284,i,13100272738549420251,6151825632958897606,262144 --variations-seed-version /prefetch:31⤵
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 1260 -ip 12601⤵
-
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3408 --field-trial-handle=2284,i,13100272738549420251,6151825632958897606,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
Are.docx
mozglue.dll
nss3.dll
Network Persistent State
SCT Auditing Pending Reports
Sdch Dictionaries
GIIIECBGDH.exe
memory/1260-109-0x0000000000400000-0x0000000000869000-memory.dmp
memory/1260-3-0x0000000000400000-0x0000000000869000-memory.dmp
memory/1260-81-0x0000000000400000-0x0000000000869000-memory.dmp
memory/1260-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/1260-1-0x00000000008D0000-0x00000000009D0000-memory.dmp
memory/1260-111-0x00000000025C0000-0x00000000025E7000-memory.dmp
memory/1260-2-0x00000000025C0000-0x00000000025E7000-memory.dmp
memory/3980-101-0x00000000008C0000-0x00000000008E0000-memory.dmp
memory/3980-102-0x0000000071EC0000-0x0000000072670000-memory.dmp
memory/3980-108-0x00000000052E0000-0x00000000052F0000-memory.dmp
memory/3980-113-0x0000000071EC0000-0x0000000072670000-memory.dmp