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Analysis
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max time kernel
140s -
max time network
144s -
platform
windows7_x64 -
resource
win7-20241010-en -
resource tags
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submitted
19/01/2025, 03:06
General
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Target
2025-01-19_f9b9fca8d0582074c127358a01079b93_mafia.exe
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Size
225KB
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MD5
f9b9fca8d0582074c127358a01079b93
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SHA1
b8e4f0e7b4389ab5aff7f89444f915c6b59f65fd
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SHA256
650d7baf827dcb92f8209d003892b068f1cbf615e5149b9c27da88166b6f44e3
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SHA512
bab1f20ef5199986966d0d55e5c91a213c595a060f8b0b7ae359163b3a72253da7cd434efd91300353e38b40a72ff6e6c4638c7d4a0e1ad66d4b8e449d05e520
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SSDEEP
3072:9kR7Gqi0YCmfua54i3Yk44qpW6FNplXFbP6BBNzN9nGb08z8E2oySq3SpZ5+JC+:9kl0Ga5uk41pW6Nl1Gn5ngV2fS+Sp2B
Malware Config
Extracted
F:\$RECYCLE.BIN\KRAB-DECRYPT.txt
http://gandcrabmfe6mnef.onion/53af8216ff661482
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 (269) 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 28 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 5 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\2025-01-19_f9b9fca8d0582074c127358a01079b93_mafia.exe"C:\Users\Admin\AppData\Local\Temp\2025-01-19_f9b9fca8d0582074c127358a01079b93_mafia.exe"1⤵
- 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
70KB
MD549aebf8cbd62d92ac215b2923fb1b9f5
SHA11723be06719828dda65ad804298d0431f6aff976
SHA256b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
SHA512bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b
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Filesize
181KB
MD54ea6026cf93ec6338144661bf1202cd1
SHA1a1dec9044f750ad887935a01430bf49322fbdcb7
SHA2568efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8
SHA5126c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b
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Filesize
7KB
MD5c61f175302049629648ec1d24ac76590
SHA10ddb923a1702f8205a64554eafc695ace9065ab2
SHA2562d90da06de30660db40837a7df7ff8a2c3d89d9c41d76b5093e11676ac82a3e7
SHA512ec93002b8bd5e5132f87c4ac3f9e0d92300c467dd1624fd0c349f3a0e5f04cbd9fec45d298d35e3add9cc6493efe33403648f283d142eb745c1130a2b0fdd3ec
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Filesize
1024KB
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Filesize
140KB
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Filesize
1024KB
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Filesize
252KB
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Filesize
140KB
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Filesize
252KB