Analysis
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max time kernel
132s -
max time network
125s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
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submitted
26-05-2024 01:03
General
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Target
42f7ec36e07bca91cfa99c9b5a1643a7674e4af4c93905a993eab902e0bfa70d.exe
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Size
355KB
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MD5
8a848d90a8d7a8c79b80d2dd8d330d9d
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SHA1
6694c6e16123598f1665b7c68da40fd342e683fa
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SHA256
42f7ec36e07bca91cfa99c9b5a1643a7674e4af4c93905a993eab902e0bfa70d
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SHA512
d67683611a368964d4dbc2ed85c9c458e5502cc8fb50608ef184cdb574e55636f800c471f8224b1fe82874175f9802d07a8dacdac5eeb73bd72a35bb7b71d54e
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SSDEEP
6144:FHAqyjjclaS6sR38CS0iD7RjPyvB7m2Rx6PLfciHid4Fwem:JAqyjjmK06ByZ7m2yee
Malware Config
Extracted
stealc
Extracted
vidar
https://steamcommunity.com/profiles/76561199689717899
https://t.me/copterwin
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user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0
Signatures
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Detect Vidar Stealer 11 IoCs
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Stealc
Stealc is an infostealer written in C++.
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Vidar
Vidar is an infostealer based on Arkei stealer.
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Detect binaries embedding considerable number of MFA browser extension IDs. 8 IoCs
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Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs. 8 IoCs
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Detects Windows executables referencing non-Windows User-Agents 11 IoCs
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Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 8 IoCs
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Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 11 IoCs
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Detects executables containing potential Windows Defender anti-emulation checks 11 IoCs
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
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Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Suspicious use of SetThreadContext 1 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
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Delays execution with timeout.exe 1 IoCs
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Suspicious behavior: EnumeratesProcesses 4 IoCs
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Suspicious use of WriteProcessMemory 18 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\42f7ec36e07bca91cfa99c9b5a1643a7674e4af4c93905a993eab902e0bfa70d.exe"C:\Users\Admin\AppData\Local\Temp\42f7ec36e07bca91cfa99c9b5a1643a7674e4af4c93905a993eab902e0bfa70d.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"2⤵
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"2⤵
- Checks computer location settings
- 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 timeout /t 10 & rd /s /q "C:\ProgramData\HJKECAAAFHJE" & exit3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
2.3MB
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Filesize
2.3MB
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Filesize
2.3MB
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Filesize
2.3MB
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Filesize
2.3MB
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Filesize
2.4MB
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Filesize
2.3MB
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Filesize
2.3MB
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Filesize
2.3MB
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Filesize
2.3MB
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Filesize
2.3MB
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Filesize
2.3MB