Resubmissions
25/03/2025, 15:17
250325-spj25s1qz4 1007/02/2025, 02:05
250207-ch85pavlcw 1005/02/2025, 09:52
250205-lv9resspek 1004/02/2025, 01:46
250204-b63gdasncq 10Analysis
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max time kernel
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max time network
112s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
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submitted
25/03/2025, 15:17
General
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Target
2025-02-04_24065b8ee2f59431f5d227cf619d7965_mafia.exe
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Size
219KB
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MD5
24065b8ee2f59431f5d227cf619d7965
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SHA1
523be526b80b0216bf1fe46dfb9391cf3f0576a0
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SHA256
7f61eda7f9a77d6a594354ef8fbe92ad8f5aff8a696468a80c47ea3e9f640826
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SHA512
b01f878d2507211606bb02cecd386b2d8cfd2922ede94fadb8199826f4174d0406cfb4f77d822022a55b5f5971c89a52604b22086f34e8c078f358aceb737621
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SSDEEP
3072:7ZMTthZ1HyTpSmJhbE0sYVQYAfF0Cq3KXB4mKVTNp4qYNu5nm+5XBNMYEmZ:7ZMLtmJ2056790CqivKVjnYNsB
Malware Config
Extracted
C:\$Recycle.Bin\S-1-5-21-3533259084-2542256011-65585152-1000\KRAB-DECRYPT.txt
http://gandcrabmfe6mnef.onion/8b67ffb2aa568937
Signatures
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Gandcrab
Gandcrab is a Trojan horse that encrypts files on a computer.
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Gandcrab family
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Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Renames multiple (277) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Credentials from Password Stores: Windows Credential Manager 1 TTPs
Suspicious access to Credentials History.
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Drops startup file 2 IoCs
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Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Enumerates connected drives 3 TTPs 23 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
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Drops file in Program Files directory 42 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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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.
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Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
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Modifies system certificate store 2 TTPs 2 IoCs
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Suspicious behavior: EnumeratesProcesses 2 IoCs
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Suspicious use of AdjustPrivilegeToken 43 IoCs
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Suspicious use of WriteProcessMemory 4 IoCs
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Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Users\Admin\AppData\Local\Temp\2025-02-04_24065b8ee2f59431f5d227cf619d7965_mafia.exeC:\Users\Admin\AppData\Local\Temp\2025-02-04_24065b8ee2f59431f5d227cf619d7965_mafia.exe bcdedit /set shutdown /r /f /t 21⤵
- Drops startup file
- Enumerates connected drives
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\wbem\wmic.exe"C:\Windows\system32\wbem\wmic.exe" shadowcopy delete2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v15
Defense Evasion
Indicator Removal
1File Deletion
1Modify Registry
1Subvert Trust Controls
1Install Root Certificate
1Credential Access
Credentials from Password Stores
2Credentials from Web Browsers
1Windows Credential Manager
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
7KB
MD54ff4eb4d8cc68e5a38a98285b0281e6d
SHA12d72b50e8db5ee9b006e91bbeff6803f05468651
SHA25657bb7d429ef39917f32a13a4225153f89f57ae681c561ded7446fbcea161777e
SHA512a4266b27be3fe052c1e3b8bb79d3d34692a99fe54d1cd34cc4070ae730e5696a62d080449e9bd1869da35c1bc87fc25282868e14b0a0288f70317aabe64896ce
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Filesize
68KB
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Filesize
152KB
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Filesize
68KB
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Filesize
240KB
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Filesize
152KB