Analysis
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max time kernel
150s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
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submitted
15-12-2024 03:25
General
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Target
2024-12-15_1f1bd29d45c5ab7b60bd03e37e3e2c01_karagany_mafia.exe
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Size
250KB
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MD5
1f1bd29d45c5ab7b60bd03e37e3e2c01
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SHA1
6c36fc36ba6f88dd4dc22b5801a14d61c70f44b4
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SHA256
7da47ee5bb9211fa7e07b158c4e9a425a69cbae6bdbcb7200e09593d74d37e37
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SHA512
5cc9b9a5e0dfb6f03bdff7828cc637443f54b16c977e8c3998573fa9fdb268a4202d2d87a92371c8ea5fb37b6eae293ae760bf17b3c6f89446a8821ceb1ce522
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SSDEEP
3072:7HvXSC+AQalUoA/INvHc7aEBN82RSVRnoxhsI/5muYDAuBauuuuuuMuWauuuuuuw:7D+A0Z/IlbctOR4hsI
Malware Config
Extracted
C:\$Recycle.Bin\KRAB-DECRYPT.txt
http://gandcrabmfe6mnef.onion/e6264fcbbad58b10
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 (298) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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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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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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Suspicious behavior: EnumeratesProcesses 4 IoCs
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Suspicious use of AdjustPrivilegeToken 45 IoCs
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Suspicious use of WriteProcessMemory 3 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\2024-12-15_1f1bd29d45c5ab7b60bd03e37e3e2c01_karagany_mafia.exe"C:\Users\Admin\AppData\Local\Temp\2024-12-15_1f1bd29d45c5ab7b60bd03e37e3e2c01_karagany_mafia.exe"1⤵
- Checks computer location settings
- Drops startup file
- Enumerates connected drives
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- 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
Credential 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
8KB
MD5fdb29ca505c903bda597f791f78d0224
SHA132ff700027002f104c79734bc6c98426c1b86690
SHA256c61d9304bf6f47090babb36667aa06efdff158b07d87825f02c3a8f8cc1343fa
SHA5124b5d4016d8d7aac170be33be71bb78afdeb19e50d488535b6d7b22de256b40bb221c68b60348bc36350399977d0a5f116e9bd57757d4ca843186fd6b551e5c4c
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Filesize
68KB
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Filesize
68KB
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Filesize
140KB
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Filesize
272KB
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Filesize
68KB
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Filesize
140KB
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Filesize
272KB