Analysis
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max time kernel
149s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20241010-en -
resource tags
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submitted
15-12-2024 03:22
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:\Users\KRAB-DECRYPT.txt
http://gandcrabmfe6mnef.onion/2d647aca69586c53
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 (329) 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 46 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\2024-12-15_1f1bd29d45c5ab7b60bd03e37e3e2c01_karagany_mafia.exe"C:\Users\Admin\AppData\Local\Temp\2024-12-15_1f1bd29d45c5ab7b60bd03e37e3e2c01_karagany_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
7KB
MD5b5036edfcf71c78e4c06b2205d6f15d1
SHA12e02ca0c11287fce9033cf3a669da3b4279874d8
SHA256ac1967f8c1d60af9d054ad3158786f688fc0646f6babd6ecaf6f33277aded27c
SHA512a4abd2aac670ccd26b5618d4fb20e809a34abc8dc6fa92c5458a3fb12fec9bb52c5efbc809b3b64ea68052b10203fb59c3a9fb7db66bd151eb627c852e8534ea
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Filesize
68KB
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Filesize
68KB
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Filesize
140KB
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Filesize
68KB
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Filesize
272KB
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Filesize
140KB