Resubmissions

05-11-2024 03:18

241105-dtxrgatbpg 10

Analysis

  • max time kernel
    141s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-11-2024 03:18

General

  • Target

    c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe

  • Size

    983KB

  • MD5

    e15e3cfa542459e8d87e8bfdf70a38a1

  • SHA1

    1c98fbf7b780fc8ab7f73d468ab77b41570c9665

  • SHA256

    c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286

  • SHA512

    fd55639cc4f757f90a01236b10bf33bd678ef7a141c6538a5285133aa8d610bb0bf287043717557a26d28a924f3c44fbf37c13421f27a389f2e8fc76ce4b91fe

  • SSDEEP

    24576:Fp90jN2CdssXMZ/ggHEfsLJ4qFKqyqG5nFYR1t:N0NDdssygGl94qFKqyqYa

Malware Config

Extracted

Family

djvu

C2

http://dell1.ug/hosuhf37t5iqy3guygg6w4guiner/37tiuywgw/get.php

Attributes
  • extension

    .meds

  • offline_id

    Pq9d1D32xIxjAlRK7OkLl3utdbWN8syVVEm35xt1

  • payload_url

    http://dell1.ug/files/cost/updatewin1.exe

    http://dell1.ug/files/cost/updatewin2.exe

    http://dell1.ug/files/cost/updatewin.exe

    http://dell1.ug/files/cost/3.exe

    http://dell1.ug/files/cost/4.exe

    http://dell1.ug/files/cost/5.exe

  • ransomnote

    ATTENTION! Don't worry, you can return all your files! All your files like photos, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-ZFjRnJfc9f Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 162Ad768734uygjdfg

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 9 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Djvu family
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Modifies file permissions 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe
    "C:\Users\Admin\AppData\Local\Temp\c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2144
    • C:\Windows\SysWOW64\icacls.exe
      icacls "C:\Users\Admin\AppData\Local\cfb856b6-1cd7-40b9-b3c0-4fb4399084d5" /deny *S-1-1-0:(OI)(CI)(DE,DC)
      2⤵
      • Modifies file permissions
      • System Location Discovery: System Language Discovery
      PID:4748
    • C:\Users\Admin\AppData\Local\Temp\c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe
      "C:\Users\Admin\AppData\Local\Temp\c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe" --Admin IsNotAutoStart IsNotTask
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:540
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2144 -s 1796
      2⤵
      • Program crash
      PID:4460
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2144 -ip 2144
    1⤵
      PID:4692

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12

      Filesize

      1KB

      MD5

      67e486b2f148a3fca863728242b6273e

      SHA1

      452a84c183d7ea5b7c015b597e94af8eef66d44a

      SHA256

      facaf1c3a4bf232abce19a2d534e495b0d3adc7dbe3797d336249aa6f70adcfb

      SHA512

      d3a37da3bb10a9736dc03e8b2b49baceef5d73c026e2077b8ebc1b786f2c9b2f807e0aa13a5866cf3b3cafd2bc506242ef139c423eaffb050bbb87773e53881e

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8

      Filesize

      436B

      MD5

      971c514f84bba0785f80aa1c23edfd79

      SHA1

      732acea710a87530c6b08ecdf32a110d254a54c8

      SHA256

      f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895

      SHA512

      43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12

      Filesize

      174B

      MD5

      99b579c30d1622b9fa77578256cc089f

      SHA1

      f52da9c42210d28904b1ef4398229b238077080d

      SHA256

      8c408592cc777e40a64e15e4f5024c3f5caf3c4fbfc8c72338562b15204d3b28

      SHA512

      c028737dd781b06e9573bd82e2eea61dfa0416102dcb66f72d53f0ddc0c7355000ca6998c86223061ed930efb3be1184995eef08e08a33aec67e7bb96f77c19c

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8

      Filesize

      170B

      MD5

      0d67b1bd032b65bfefe967780bf3d3e5

      SHA1

      df269f8212d0fded12af7ff6fa4474133bcbf073

      SHA256

      8783c824234c876c17bff5a019783bf336779e6054c5da866194a7927845be19

      SHA512

      3aa2fe46832d30c6e2126811b81dad2715f22416d0b21b78ee6700e8b4c89ec41d9c8bef416645e3319b3897ab17df6a81db8bf01f7f18b9a6c2f97f412a8b1a

    • C:\Users\Admin\AppData\Local\cfb856b6-1cd7-40b9-b3c0-4fb4399084d5\c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe

      Filesize

      983KB

      MD5

      e15e3cfa542459e8d87e8bfdf70a38a1

      SHA1

      1c98fbf7b780fc8ab7f73d468ab77b41570c9665

      SHA256

      c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286

      SHA512

      fd55639cc4f757f90a01236b10bf33bd678ef7a141c6538a5285133aa8d610bb0bf287043717557a26d28a924f3c44fbf37c13421f27a389f2e8fc76ce4b91fe

    • memory/540-17-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/540-19-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/540-18-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/540-28-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/540-32-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/540-33-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2144-1-0x00000000023A0000-0x0000000002470000-memory.dmp

      Filesize

      832KB

    • memory/2144-3-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2144-2-0x0000000002470000-0x000000000258A000-memory.dmp

      Filesize

      1.1MB

    • memory/2144-26-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2144-27-0x0000000002470000-0x000000000258A000-memory.dmp

      Filesize

      1.1MB