Analysis

  • max time kernel
    140s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    22-05-2024 13:23

General

  • Target

    676734b55087daccd1b51407c9954cec_JaffaCakes118.exe

  • Size

    241KB

  • MD5

    676734b55087daccd1b51407c9954cec

  • SHA1

    a80e54f2e0c319babf82bf681d555757c2dfd5f5

  • SHA256

    a2277ccbce73460705a3365a8152c2308b663a2877b5710d2a4a150dea9f7f45

  • SHA512

    7f66a2e69e652f16f50add5311865042afab6786e6070d3ca9022eea4a6c2c30fd795a9e75657c01a076eb685c7f90bc35097a20885f547deb11587443568081

  • SSDEEP

    3072:BOqBEFWcUU1nvPpFuoBtjO/ULu/UIUUq8bRObuSq2rlJ77lDcK4+2NvvZv8Y:B3EFMa5xq/UC/Ugsr3lJ77FPmZ

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-3452737119-3959686427-228443150-1000\KRAB-DECRYPT.txt

Ransom Note
---= GANDCRAB V4 =--- Attention! All your files, documents, photos, databases and other important files are encrypted and have the extension: .KRAB 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/222d58f1a8a3c705 | 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--- 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 ---END PC DATA---
URLs

http://gandcrabmfe6mnef.onion/222d58f1a8a3c705

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 (296) files with added filename extension

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

  • 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.

  • Drops file in Program Files directory 31 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 13 IoCs
  • 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\676734b55087daccd1b51407c9954cec_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\676734b55087daccd1b51407c9954cec_JaffaCakes118.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Checks processor information in registry
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2856
    • C:\Windows\SysWOW64\wbem\wmic.exe
      "C:\Windows\system32\wbem\wmic.exe" shadowcopy delete
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:536
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1156

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\$Recycle.Bin\S-1-5-21-3452737119-3959686427-228443150-1000\KRAB-DECRYPT.txt
    Filesize

    7KB

    MD5

    a5535f5e88466dfd3ac46a10785fb935

    SHA1

    ecd76799dcca80e3c7d6b7d44c02e9771c3623b9

    SHA256

    61c8069c2d867846028e056083eacb1cf695a323eb84fa1ebbc77b30d599ee8a

    SHA512

    3f358f3ad007d0ae45d9c43e6023d33e27fb8eeab632646e7d54c7902ef1969419438843b517bc6c1f4c4ede8b7bcc1bd5e5cb78ba6013bc0b26405287f38d84

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
    Filesize

    68KB

    MD5

    29f65ba8e88c063813cc50a4ea544e93

    SHA1

    05a7040d5c127e68c25d81cc51271ffb8bef3568

    SHA256

    1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

    SHA512

    e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\F0ACCF77CDCBFF39F6191887F6D2D357
    Filesize

    1KB

    MD5

    a266bb7dcc38a562631361bbf61dd11b

    SHA1

    3b1efd3a66ea28b16697394703a72ca340a05bd5

    SHA256

    df545bf919a2439c36983b54cdfc903dfa4f37d3996d8d84b4c31eec6f3c163e

    SHA512

    0da8ef4f8f6ed3d16d2bc8eb816b9e6e1345dfe2d91160196c47e6149a1d6aedaafadcefd66acdea7f72dcf0832770192ceac15b0c559c4ccc2c0e5581d5aefc

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    Filesize

    344B

    MD5

    9bf6a67b5decdf95a8a6346207f365ea

    SHA1

    b48b30c984864747a6d4735023d3c5a3524ae170

    SHA256

    29f8edd17a08c4057c0a2e0b036f4ccdaa1e84354a309e8a32c27a4893fbc799

    SHA512

    7996ea5e61511fc7ffd7473f4a373f3835755fd228dc0c181a09fdab3f5ed19ba446e1c9de0741bcf264205539a27e331c99bbecb0c9dcd35699ec67c9eb9f42

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    Filesize

    344B

    MD5

    856d744ed37663a7f1f8e26da81a318b

    SHA1

    359231bc3d3ed3c452145e9cb1915d2e44b2db3a

    SHA256

    8ed2fa3da22ccb1ca710c7d56d0719beb1cb700b4c6364782908cb15787f96ba

    SHA512

    5ea270e775574e19c8489702a93a7b7a28430d4459ad30d8d4ff7bde2dcf04b4a35197495919d0102cac82498cc79af8ff967cde31953747ff2cae126af67646

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    Filesize

    344B

    MD5

    a0c5702141878585831f27eb351044e1

    SHA1

    b743caeb37fe81c633fb12bc1b7a55f5d6d53fb7

    SHA256

    1d8024e71a84a236707f37939b9d92827ff5bd01007cfb7e27c7070079db3a84

    SHA512

    9dbd225977e4d9dc967e4509eb6a37c9eba249774bb164823b68cc6cbfffb6b1cd5bf1f1fa4705091d8de91c5a80cbadd028ef7ef43b1745714cb0ea16706a1e

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\F0ACCF77CDCBFF39F6191887F6D2D357
    Filesize

    242B

    MD5

    1d1948d75412afccabcf3062ecc5160b

    SHA1

    9189d96217c9b5bd4ff3287e78fd642740331a9b

    SHA256

    32793e7b256008a8ee86ac80e1e4e15b4aba5ced1b630fb32fcc0c792f6d817e

    SHA512

    684e718b43ac4d8e64f081bc98e73880b70cda895edbe1f5280341c350f105f34a5363538bd60cb2dd301e1defcdc85d634fbc69a80cb50a0a6a5513ab9a45fe

  • C:\Users\Admin\AppData\Local\Temp\Tar19DE.tmp
    Filesize

    177KB

    MD5

    435a9ac180383f9fa094131b173a2f7b

    SHA1

    76944ea657a9db94f9a4bef38f88c46ed4166983

    SHA256

    67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

    SHA512

    1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

  • memory/2856-932-0x0000000000400000-0x0000000000442000-memory.dmp
    Filesize

    264KB

  • memory/2856-934-0x0000000000550000-0x0000000000650000-memory.dmp
    Filesize

    1024KB

  • memory/2856-935-0x0000000000400000-0x0000000000423000-memory.dmp
    Filesize

    140KB

  • memory/2856-1-0x0000000000550000-0x0000000000650000-memory.dmp
    Filesize

    1024KB

  • memory/2856-2-0x0000000000400000-0x0000000000423000-memory.dmp
    Filesize

    140KB