Analysis
-
max time kernel
120s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
-
submitted
18-01-2025 23:40
General
-
Target
2025-01-18_c1f1804f2b2b147f4b83617a4759b3ba_gandcrab.exe
-
Size
93KB
-
MD5
c1f1804f2b2b147f4b83617a4759b3ba
-
SHA1
e5e8b97b0f2aaef264b00cad079e02f234a69ffa
-
SHA256
ebbb39823cd6eaf3b4ae7737d7f6bb687efb6b9a588e5a0a3478c28b7455ad6f
-
SHA512
60480a6805e1af87f6fe403b8753878c0bba013cfb63f794ef7f88c427ca78288657cb6258fc9c7bab8ce2f3a14b020d8a535d651ad347702f9c473f11492a95
-
SSDEEP
1536:Yw2p3ieRXCkxEoSXf6GizDhp2keW8PaoYEJOcrHuTc+N:fSyex5yoSPmzKkeW8iEJjHU
Malware Config
Extracted
C:\$Recycle.Bin\S-1-5-21-3533259084-2542256011-65585152-1000\YMEGCMQ-MANUAL.txt
gandcrab
http://gandcrabmfe6mnef.onion/5ef3d88d3a921045
Signatures
-
Gandcrab
Gandcrab is a Trojan horse that encrypts files on a computer.
-
Gandcrab family
-
Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
-
Renames multiple (270) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
-
Credentials from Password Stores: Windows Credential Manager 1 TTPs
Suspicious access to Credentials History.
-
Drops startup file 2 IoCs
-
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
Enumerates connected drives 3 TTPs 23 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
-
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
-
Drops file in Program Files directory 42 IoCs
-
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
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.
-
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
-
Suspicious behavior: EnumeratesProcesses 2 IoCs
-
Suspicious use of AdjustPrivilegeToken 43 IoCs
-
Suspicious use of WriteProcessMemory 4 IoCs
-
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
-
C:\Users\Admin\AppData\Local\Temp\2025-01-18_c1f1804f2b2b147f4b83617a4759b3ba_gandcrab.exe"C:\Users\Admin\AppData\Local\Temp\2025-01-18_c1f1804f2b2b147f4b83617a4759b3ba_gandcrab.exe"1⤵
- Drops startup file
- Enumerates connected drives
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\wbem\wmic.exe"C:\Windows\system32\wbem\wmic.exe" shadowcopy delete2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
-
-
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
-
Filesize
8KB
MD5660b2775ffd84ceb15053d4dfa73f9b7
SHA1b5b86896b897408420416a6f9af2ccc28b18ffb7
SHA2565c31e37ad27575b578e894799928fcd984005f90a5e11eac9350435103eb39e6
SHA51212994d9aa3987d1c8b1020820bba2d2b412c1a48c45547f42f4375b0fb300ed7c607f7e35a056081f0acddd65b63fadc9651860090da6053a2ae5917ff854984