Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-05-2024 17:54

General

  • Target

    13d5815ef6299270aa4e476ab0d57ba7_JaffaCakes118.exe

  • Size

    225KB

  • MD5

    13d5815ef6299270aa4e476ab0d57ba7

  • SHA1

    b039618283277b6654d0291d3296fed36685317a

  • SHA256

    9df318a17515aeed7719fb9a650c16e5adeec27d1cee888cba378f5ba6f90ac7

  • SHA512

    e61c5b85022302df0b5244ac193aaef017f92882c3b61fbc13a99578c0806ecc60735f3fb3b1aa89fed41822025b879150070e38c5761a69508f4a85d4ecf82f

  • SSDEEP

    3072:afLnfk1mn7UVGhRXR9cEF3KGx/CgO9PcsibcbQLOEpTR5w1BNH50Idt:afL8c4VQcEwGxagiPSbIyPKQIb

Malware Config

Extracted

Path

F:\$RECYCLE.BIN\OWZDILWMUV-DECRYPT.txt

Ransom Note
---= GANDCRAB V5.0.2 =--- ***********************UNDER NO CIRCUMSTANCES DO NOT DELETE THIS FILE, UNTIL ALL YOUR DATA IS RECOVERED*********************** *****FAILING TO DO SO, WILL RESULT IN YOUR SYSTEM CORRUPTION, IF THERE WILL BE DECRYPTION ERRORS***** Attention! All your files, documents, photos, databases and other important files are encrypted and have the extension: .OWZDILWMUV The only method of recovering files is to purchase an unique private key. Only we can give you this key and only we can recover your files. The server with your key is in a closed network TOR. You can get there by the following ways: ---------------------------------------------------------------------------------------- | 0. Download Tor browser - https://www.torproject.org/ | 1. Install Tor browser | 2. Open Tor Browser | 3. Open link in TOR browser: http://gandcrabmfe6mnef.onion/94b134949033c0fb | 4. Follow the instructions on this page ---------------------------------------------------------------------------------------- On our page you will see instructions on payment and get the opportunity to decrypt 1 file for free. ATTENTION! IN ORDER TO PREVENT DATA DAMAGE: * DO NOT MODIFY ENCRYPTED FILES * DO NOT CHANGE DATA BELOW ---BEGIN GANDCRAB KEY--- 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 ---END GANDCRAB KEY--- ---BEGIN PC DATA--- wfKD6iudumBkmpL8IRr4U4exEVaoOXLtwDwmOrT1y1YWvOiWMx5GYaRdvZZRTo1RvHYH7nxWvbfATGCHhh5qBJzzs9MC7736UkGSDDniUJJG8/LFF//kmGmoAZAGLo2j5/wd2UrxMJK+iqKhTkS3ArgAxrZOOOiXrbnhbWMkLHQnbYuWlMClYZxYU6SDxpopRo5r292AV1KIZBZV4APBuUHcKSIr2MWMI0O1MKIP2IpKLE2TS5wNmoQoAHZIP7k/TfrG1tVzlDb3jcZAB3gql9dnWN0lCD4xdg7bDNQrvH1xSi3FCw+6kfktKtizqdynr7r154JiurEmkUXB6eKg/zQ2EOslGt9YZVqHBi7trRHVEdob8icS4o+4aab3Y5NyPYz32XaispQRTRkqF1PXJPcJ15EHwNAoARPLnK8+Au5ZALyfhGEwg6hrKQ3vxBFKwg70Zi7pDxFM3vTLNOah1wIZNHQXRleKYDmn1lvgAn90mSDf7SyGQSZnn7Ivlsuw7HIKVYbpfzf2fBccdMBnP2lNhH9XQ3DC2qZAEuDtLkioBZ9MNJGhHpcOdL/YRZoP4YksV8zuv7OczMv9MHYTh4gzvuwKRb5tB/+FbmHWs+IUXo5eM9Q19EBhLFKM2u1g1mmDLQgzxwsJfjT5T2ECiWME ---END PC DATA---
URLs

http://gandcrabmfe6mnef.onion/94b134949033c0fb

Signatures

  • Gandcrab

    Gandcrab is a Trojan horse that encrypts files on a computer.

  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Renames multiple (293) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 2 IoCs
  • Reads user/profile data of web browsers 2 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 17 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 45 IoCs
  • Suspicious use of WriteProcessMemory 3 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\13d5815ef6299270aa4e476ab0d57ba7_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\13d5815ef6299270aa4e476ab0d57ba7_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Enumerates connected drives
    • Sets desktop wallpaper using registry
    • Drops file in Program Files directory
    • Checks processor information in registry
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4052
    • C:\Windows\SysWOW64\wbem\wmic.exe
      "C:\Windows\system32\wbem\wmic.exe" shadowcopy delete
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4004
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2264

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • F:\$RECYCLE.BIN\OWZDILWMUV-DECRYPT.txt

    Filesize

    8KB

    MD5

    d8f49684619cf6ff3c40b10c546afda2

    SHA1

    21d175b3dc1c6df5225c79b517366509938ee8be

    SHA256

    d67367e59fdf3538c4c0c42fb15dbeb538f1fba0163e03fde05ccd8ad7239b69

    SHA512

    92172084382267198051e6a27fc77c220a531f6bb2442bb26c4bba1a171c1e7d342a2db864f0b03d4668210250ac8c8e0963f1c01febde5fc97e68f72e95c538

  • memory/4052-1-0x00000000004E0000-0x00000000005E0000-memory.dmp

    Filesize

    1024KB

  • memory/4052-2-0x0000000000400000-0x0000000000428000-memory.dmp

    Filesize

    160KB

  • memory/4052-451-0x0000000000400000-0x000000000043D000-memory.dmp

    Filesize

    244KB

  • memory/4052-468-0x0000000000400000-0x000000000043D000-memory.dmp

    Filesize

    244KB

  • memory/4052-472-0x00000000004E0000-0x00000000005E0000-memory.dmp

    Filesize

    1024KB

  • memory/4052-473-0x0000000000400000-0x0000000000428000-memory.dmp

    Filesize

    160KB