Analysis
- max time kernel
149s - max time network
156s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
18/05/2026, 03:57
General
- Target 2026-05-18_0bf1ac88d4c27717e58ed9375f9cbad3_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe
- Size 768KB
- Sample260518-ejc5rafx7w
- SHA256 a4a8b559409b595f998d9093e3a202131b5508f676bc0328039a6f081547400e
Score
9/10
Malware Config
Signatures
- Custom signatureDetection of CryptoLocker Variants 1 IoCs
- Custom signatureDetection of Cryptolocker Samples 1 IoCs
- Custom signatureUPX dump on OEP (original entry point) 8 IoCs
- Executes dropped EXE 1 IoCs
- Unexpected DNS network traffic destination 4 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
- Drops file in System32 directory 5 IoCs
- UPX packed file 8 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Drops file in Windows directory 2 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Modifies data under HKEY_USERS 9 IoCs
- Suspicious behavior: EnumeratesProcesses 14 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-05-18_0bf1ac88d4c27717e58ed9375f9cbad3_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe"C:\Users\Admin\AppData\Local\Temp\2026-05-18_0bf1ac88d4c27717e58ed9375f9cbad3_coinminer_cryptolocker_elex_mafia_stealc_tofsee.exe"1⤵
- Unexpected DNS network traffic destination
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
C:\Windows\Syswow64\2a3720baC:\Windows\Syswow64\2a3720ba1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
2a3720ba
memory/448-0-0x0000000000450000-0x00000000004D9000-memory.dmp
memory/448-10-0x0000000000450000-0x00000000004D9000-memory.dmp
memory/448-24-0x0000000000450000-0x00000000004D9000-memory.dmp
memory/448-35-0x0000000000450000-0x00000000004D9000-memory.dmp
memory/1164-4-0x0000000000680000-0x0000000000709000-memory.dmp
memory/1164-12-0x0000000000680000-0x0000000000709000-memory.dmp
memory/1164-25-0x0000000000680000-0x0000000000709000-memory.dmp