Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
16/05/2024, 10:45
General
- Target dea65fca4cc9c32e002ac397e304e4b5eba0527aa2c1a4fe32b4a6130f57cb64.exe
- Size 373KB
- Sample240516-mtds2agg5x
- SHA256 dea65fca4cc9c32e002ac397e304e4b5eba0527aa2c1a4fe32b4a6130f57cb64
Malware Config
Extracted
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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 26 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
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C:\Users\Admin\AppData\Local\Temp\dea65fca4cc9c32e002ac397e304e4b5eba0527aa2c1a4fe32b4a6130f57cb64.exe"C:\Users\Admin\AppData\Local\Temp\dea65fca4cc9c32e002ac397e304e4b5eba0527aa2c1a4fe32b4a6130f57cb64.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\u3a4.0.exe"C:\Users\Admin\AppData\Local\Temp\u3a4.0.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 540 -s 20243⤵
- Program crash
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-
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C:\Users\Admin\AppData\Local\Temp\u3a4.1.exe"C:\Users\Admin\AppData\Local\Temp\u3a4.1.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
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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
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-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4252 -s 15082⤵
- Program crash
-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4252 -ip 42521⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 540 -ip 5401⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
Are.docx
mozglue.dll
nss3.dll
u3a4.0.exe
u3a4.1.exe
memory/540-175-0x0000000000400000-0x0000000000793000-memory.dmp
memory/540-34-0x0000000000400000-0x0000000000793000-memory.dmp
memory/540-35-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/540-101-0x0000000000400000-0x0000000000793000-memory.dmp
memory/2140-105-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/2140-22-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/2140-102-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/2732-113-0x0000019D7D3C0000-0x0000019D7D3EA000-memory.dmp
memory/2732-133-0x0000019D1AF00000-0x0000019D1AF0C000-memory.dmp
memory/2732-107-0x0000019D7D590000-0x0000019D7D69A000-memory.dmp
memory/2732-108-0x0000019D7BB60000-0x0000019D7BB70000-memory.dmp
memory/2732-109-0x0000019D7BC00000-0x0000019D7BC0C000-memory.dmp
memory/2732-110-0x0000019D7BB70000-0x0000019D7BB84000-memory.dmp
memory/2732-111-0x0000019D7D380000-0x0000019D7D3A4000-memory.dmp
memory/2732-112-0x0000019D7BC50000-0x0000019D7BC5A000-memory.dmp
memory/2732-136-0x0000019D7FC60000-0x0000019D7FC7E000-memory.dmp
memory/2732-114-0x0000019D7D7E0000-0x0000019D7D892000-memory.dmp
memory/2732-115-0x0000019D7D890000-0x0000019D7D8E0000-memory.dmp
memory/2732-116-0x0000019D7D420000-0x0000019D7D442000-memory.dmp
memory/2732-117-0x0000019D7D3A0000-0x0000019D7D3AA000-memory.dmp
memory/2732-121-0x0000019D7D8E0000-0x0000019D7DBE0000-memory.dmp
memory/2732-123-0x0000019D7F540000-0x0000019D7F548000-memory.dmp
memory/2732-124-0x0000019D7FC20000-0x0000019D7FC58000-memory.dmp
memory/2732-125-0x0000019D7F550000-0x0000019D7F55E000-memory.dmp
memory/2732-126-0x0000019D7F560000-0x0000019D7F568000-memory.dmp
memory/2732-127-0x0000019D1B180000-0x0000019D1B18A000-memory.dmp
memory/2732-128-0x0000019D1B1A0000-0x0000019D1B202000-memory.dmp
memory/2732-129-0x0000019D1B200000-0x0000019D1B222000-memory.dmp
memory/2732-130-0x0000019D1B750000-0x0000019D1BC78000-memory.dmp
memory/2732-106-0x0000019D76600000-0x0000019D79E34000-memory.dmp
memory/2732-134-0x0000019D7FCE0000-0x0000019D7FD56000-memory.dmp
memory/4252-3-0x0000000000400000-0x000000000046F000-memory.dmp
memory/4252-27-0x0000000000400000-0x00000000004A7000-memory.dmp
memory/4252-28-0x0000000000400000-0x000000000046F000-memory.dmp
memory/4252-1-0x00000000006C0000-0x00000000007C0000-memory.dmp
memory/4252-2-0x0000000000620000-0x000000000068C000-memory.dmp