Analysis
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max time kernel
145s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20240903-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
F:\$RECYCLE.BIN\S-1-5-21-4177215427-74451935-3209572229-1000\KRAB-DECRYPT.txt
http://gandcrabmfe6mnef.onion/ef2d62a9f35db12a
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 (334) 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 45 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
70KB
MD549aebf8cbd62d92ac215b2923fb1b9f5
SHA11723be06719828dda65ad804298d0431f6aff976
SHA256b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
SHA512bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b
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Filesize
181KB
MD54ea6026cf93ec6338144661bf1202cd1
SHA1a1dec9044f750ad887935a01430bf49322fbdcb7
SHA2568efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8
SHA5126c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b
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Filesize
7KB
MD593974ae396a461a524fb6563dc358af1
SHA1dcc5ffda9f4afa3ef80b27d28f44ed3f01b8f496
SHA256beffcc5b252b8417373f2da0a550c25dff4b187b0b23433b756f7188419b79fd
SHA51214d18881cceba8db4ceba4cf1ebf88cc1e0a0beceda263620c965951c4d3e44c776bf99f9cc0bddf88ed65025d7237266a9e78d9612da971c9d5f0acff8fda9f
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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