Analysis
- max time kernel
148s - max time network
155s - platform
windows10-2004_x64 - resource
win10v2004-20231127-en - resource tags
- submitted
07/12/2023, 09:14
General
- Target 631defcfe435bb021b408b39bc9130cc351d698791172f6c9db6050cf3db1702.exe
- Size 6.6MB
- Sample231207-k7crsagh77
- SHA256 631defcfe435bb021b408b39bc9130cc351d698791172f6c9db6050cf3db1702
Malware Config
Extracted
-
cryptbot
-
http://chucxo62.top/gate.php
Signatures
- CryptBot
A C++ stealer distributed widely in bundle with other software.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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.
- Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs. 4 IoCs
test.
- Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\631defcfe435bb021b408b39bc9130cc351d698791172f6c9db6050cf3db1702.exe"C:\Users\Admin\AppData\Local\Temp\631defcfe435bb021b408b39bc9130cc351d698791172f6c9db6050cf3db1702.exe"1⤵
- Checks computer location settings
- Maps connected drives based on registry
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout -t 5 && del "C:\Users\Admin\AppData\Local\Temp\631defcfe435bb021b408b39bc9130cc351d698791172f6c9db6050cf3db1702.exe"2⤵
- Suspicious use of WriteProcessMemory
-
-
C:\Windows\SysWOW64\timeout.exetimeout -t 51⤵
- Delays execution with timeout.exe
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
8524.tmp
8789.tmp
8F17.tmp
memory/3720-2-0x0000000002C30000-0x0000000002C31000-memory.dmp
memory/3720-4-0x0000000002C60000-0x0000000002C61000-memory.dmp
memory/3720-5-0x0000000002C70000-0x0000000002C71000-memory.dmp
memory/3720-7-0x0000000000400000-0x0000000000EB9000-memory.dmp
memory/3720-8-0x0000000002C90000-0x0000000002C91000-memory.dmp
memory/3720-6-0x0000000002C80000-0x0000000002C81000-memory.dmp
memory/3720-1-0x00000000010A0000-0x00000000010A1000-memory.dmp
memory/3720-3-0x0000000000400000-0x0000000000EB9000-memory.dmp
memory/3720-0-0x0000000001090000-0x0000000001091000-memory.dmp
memory/3720-114-0x0000000000400000-0x0000000000EB9000-memory.dmp
memory/3720-115-0x0000000000400000-0x0000000000EB9000-memory.dmp