Analysis

  • max time kernel
    187s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    03-10-2022 21:58

General

  • Target

    6ce78b597a3e693e58b3fee9ee9b549991d071d6e7928f817d69e299048d9495.exe

  • Size

    743KB

  • MD5

    69eb41d973e7c96fe47c381320dfd140

  • SHA1

    e45c2f5e2f74c35beb1a019b708573155f5a17a1

  • SHA256

    6ce78b597a3e693e58b3fee9ee9b549991d071d6e7928f817d69e299048d9495

  • SHA512

    5b4a8bf698640d7a25b9b6bdf1b9d73e9c99593c307c2f416b07bc1e9ea70091327cd6afcd5f5717a7f0160c1a46832d79ff4b1e4d1a45113f3f6d986fa88b52

  • SSDEEP

    12288:zogZILd4+csZJQNtUbu+jlkB9XwN6qZvbU5+fXKQbX48KfVko93LYtZtq:zog84MJyUqXwjZvc+fa0Kfzos

Score
10/10

Malware Config

Extracted

Path

C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\!Decrypt-All-Files-chldicl.txt

Ransom Note
Your documents, photos, databases and other important files have been encrypted with strongest encryption and unique key, generated for this computer. Private decryption key is stored on a secret Internet server and nobody can decrypt your files until you pay and obtain the private key. If you see the main locker window, follow the instructions on the locker. Overwise, it's seems that you or your antivirus deleted the locker program. Now you have the last chance to decrypt your files. Open http://jssestaew3e7ao3q.onion.cab or http://jssestaew3e7ao3q.tor2web.org in your browser. They are public gates to the secret server. If you have problems with gates, use direct connection: 1. Download Tor Browser from http://torproject.org 2. In the Tor Browser open the http://jssestaew3e7ao3q.onion/ Note that this server is available via Tor Browser only. Retry in 1 hour if site is not reachable. Copy and paste the following public key in the input form on server. Avoid missprints. DLCWUVP-2JDG2RV-E5JX323-JVS22YN-LK7CLUE-JSDBFXI-BCC4YOK-SSCADGZ RYFXYWF-UDPKLYW-2GUDTPN-P5UXNYI-E6GOZQG-U3GHNPF-3ERNJCJ-S7VDRQZ TGJDVQW-CXYIC64-PGX5A2S-EVXU2NS-FQQ43YP-PQT6D52-NBJ5FDW-FGJGSTT Follow the instructions on the server.
URLs

http://jssestaew3e7ao3q.onion.cab

http://jssestaew3e7ao3q.tor2web.org

http://jssestaew3e7ao3q.onion/

Extracted

Path

C:\Users\Admin\Documents\!Decrypt-All-Files-chldicl.txt

Ransom Note
Your documents, photos, databases and other important files have been encrypted with strongest encryption and unique key, generated for this computer. Private decryption key is stored on a secret Internet server and nobody can decrypt your files until you pay and obtain the private key. If you see the main locker window, follow the instructions on the locker. Overwise, it's seems that you or your antivirus deleted the locker program. Now you have the last chance to decrypt your files. Open http://jssestaew3e7ao3q.onion.cab or http://jssestaew3e7ao3q.tor2web.org in your browser. They are public gates to the secret server. If you have problems with gates, use direct connection: 1. Download Tor Browser from http://torproject.org 2. In the Tor Browser open the http://jssestaew3e7ao3q.onion/ Note that this server is available via Tor Browser only. Retry in 1 hour if site is not reachable. Copy and paste the following public key in the input form on server. Avoid missprints. DLCWUVP-2JDG2RV-E5JX323-JVS22YN-LK7CLUE-JSDBFXI-BCC4YOK-SSCADGZ RYFXYWF-UDPKLYW-2GUDTPN-P5UXNYI-E6GOZQG-U3GHNPF-3ERNJCJ-S7VDRQZ TGJDVQW-CXYIC64-PGX5A2S-EVXU2NS-FQQ45LP-TJT6D52-NBJ5FDW-FGJWGIC Follow the instructions on the server.
URLs

http://jssestaew3e7ao3q.onion.cab

http://jssestaew3e7ao3q.tor2web.org

http://jssestaew3e7ao3q.onion/

Signatures

  • CTB-Locker

    Ransomware family which uses Tor to hide its C2 communications.

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 4 IoCs
  • Drops desktop.ini file(s) 1 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • NSIS installer 6 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Modifies data under HKEY_USERS 20 IoCs
  • Suspicious behavior: EnumeratesProcesses 18 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Sets desktop wallpaper using registry
    PID:1272
    • C:\Users\Admin\AppData\Local\Temp\6ce78b597a3e693e58b3fee9ee9b549991d071d6e7928f817d69e299048d9495.exe
      "C:\Users\Admin\AppData\Local\Temp\6ce78b597a3e693e58b3fee9ee9b549991d071d6e7928f817d69e299048d9495.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:856
      • C:\Users\Admin\AppData\Local\Temp\6ce78b597a3e693e58b3fee9ee9b549991d071d6e7928f817d69e299048d9495.exe
        "C:\Users\Admin\AppData\Local\Temp\6ce78b597a3e693e58b3fee9ee9b549991d071d6e7928f817d69e299048d9495.exe"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:948
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k DcomLaunch
    1⤵
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • Modifies data under HKEY_USERS
    • Suspicious use of WriteProcessMemory
    PID:596
    • C:\Windows\system32\DllHost.exe
      C:\Windows\system32\DllHost.exe /Processid:{AB8902B4-09CA-4BB6-B78D-A8F59079A8D5}
      2⤵
        PID:1200
    • C:\Windows\system32\taskeng.exe
      taskeng.exe {0253D43F-DD72-4A06-8E53-75D8AB40143F} S-1-5-18:NT AUTHORITY\System:Service:
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:2012
      • C:\Users\Admin\AppData\Local\Temp\gejzibk.exe
        C:\Users\Admin\AppData\Local\Temp\gejzibk.exe
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:836
        • C:\Users\Admin\AppData\Local\Temp\gejzibk.exe
          "C:\Users\Admin\AppData\Local\Temp\gejzibk.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1412
          • C:\Windows\SysWOW64\vssadmin.exe
            vssadmin delete shadows all
            4⤵
            • Interacts with shadow copies
            PID:1284

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\Mozilla\qrsyusl

      Filesize

      654B

      MD5

      ee911c84264fe282c2dee758c2600f4b

      SHA1

      d135f26ef4ce2a04d8f3d697653c477b7acf9971

      SHA256

      f257eb8bd9a7623e5f4729b303fccd17cd172ee71bd08e9f28ce25b268fa4bfe

      SHA512

      bbee6e22023b2e4b19641cfbdaec320c358edce61eb3734fede8db70968eaabfee60d0576d8c7ef4787750fd86139e1bbb1a5b0ce497e21addc544cb2e886730

    • C:\ProgramData\Mozilla\qrsyusl

      Filesize

      654B

      MD5

      ee911c84264fe282c2dee758c2600f4b

      SHA1

      d135f26ef4ce2a04d8f3d697653c477b7acf9971

      SHA256

      f257eb8bd9a7623e5f4729b303fccd17cd172ee71bd08e9f28ce25b268fa4bfe

      SHA512

      bbee6e22023b2e4b19641cfbdaec320c358edce61eb3734fede8db70968eaabfee60d0576d8c7ef4787750fd86139e1bbb1a5b0ce497e21addc544cb2e886730

    • C:\ProgramData\Mozilla\qrsyusl

      Filesize

      654B

      MD5

      b7ebaa378995d78ed984e841f8245fc1

      SHA1

      bad40e1dfe6af25063c1646bc3035b42bc31027d

      SHA256

      cb91eb0515f25463fb94744dbca1db82edc307f5f13a3af7d6471f93414a0b1e

      SHA512

      79bfb2fcec9b4048dc325ed74634068ebc6fd2b219a6f9c1c9f1363e9f73c7e555e968b168657db45af801e051e02d324cdb5ca45bbada492f852513a8a4bd4b

    • C:\ProgramData\Mozilla\qrsyusl

      Filesize

      654B

      MD5

      8db68e8a0fd08deb64756c610b2dbb3d

      SHA1

      458835e1047c6771dd9b88b0e468fab6294adf57

      SHA256

      b462e3b38c0712c1112f1bc263f07d67d9c449531e05c6b66d8ad1a055438371

      SHA512

      a664f645d1a7e756a3cc4b5e3216c7b85cee166314fe714ed831a52176d87359966abf00d6097d43f87a948a8f3a38f9ebfad92fd732b8b97e252be268828fe7

    • C:\Users\Admin\AppData\Local\Temp\Jacob.DLL

      Filesize

      54KB

      MD5

      010db3b152d0ea1e58030cf24faa970a

      SHA1

      7846ef6f5bc59165a8422d5ebb6bd2c687a039ee

      SHA256

      dbd14b1045af098de2d861f487d534604afc06fcfbeed6c35ecef06b7ea2be0a

      SHA512

      6473234297caf5bd01a6e89e267631a10277042ab7808db414cf034b962501d85218cb07189f62bc33a2485d91b5649743ae4434af02c2d382e39defb6340270

    • C:\Users\Admin\AppData\Local\Temp\gejzibk.exe

      Filesize

      743KB

      MD5

      69eb41d973e7c96fe47c381320dfd140

      SHA1

      e45c2f5e2f74c35beb1a019b708573155f5a17a1

      SHA256

      6ce78b597a3e693e58b3fee9ee9b549991d071d6e7928f817d69e299048d9495

      SHA512

      5b4a8bf698640d7a25b9b6bdf1b9d73e9c99593c307c2f416b07bc1e9ea70091327cd6afcd5f5717a7f0160c1a46832d79ff4b1e4d1a45113f3f6d986fa88b52

    • C:\Users\Admin\AppData\Local\Temp\gejzibk.exe

      Filesize

      743KB

      MD5

      69eb41d973e7c96fe47c381320dfd140

      SHA1

      e45c2f5e2f74c35beb1a019b708573155f5a17a1

      SHA256

      6ce78b597a3e693e58b3fee9ee9b549991d071d6e7928f817d69e299048d9495

      SHA512

      5b4a8bf698640d7a25b9b6bdf1b9d73e9c99593c307c2f416b07bc1e9ea70091327cd6afcd5f5717a7f0160c1a46832d79ff4b1e4d1a45113f3f6d986fa88b52

    • C:\Users\Admin\AppData\Local\Temp\gejzibk.exe

      Filesize

      743KB

      MD5

      69eb41d973e7c96fe47c381320dfd140

      SHA1

      e45c2f5e2f74c35beb1a019b708573155f5a17a1

      SHA256

      6ce78b597a3e693e58b3fee9ee9b549991d071d6e7928f817d69e299048d9495

      SHA512

      5b4a8bf698640d7a25b9b6bdf1b9d73e9c99593c307c2f416b07bc1e9ea70091327cd6afcd5f5717a7f0160c1a46832d79ff4b1e4d1a45113f3f6d986fa88b52

    • \Users\Admin\AppData\Local\Temp\Jacob.dll

      Filesize

      54KB

      MD5

      010db3b152d0ea1e58030cf24faa970a

      SHA1

      7846ef6f5bc59165a8422d5ebb6bd2c687a039ee

      SHA256

      dbd14b1045af098de2d861f487d534604afc06fcfbeed6c35ecef06b7ea2be0a

      SHA512

      6473234297caf5bd01a6e89e267631a10277042ab7808db414cf034b962501d85218cb07189f62bc33a2485d91b5649743ae4434af02c2d382e39defb6340270

    • \Users\Admin\AppData\Local\Temp\Jacob.dll

      Filesize

      54KB

      MD5

      010db3b152d0ea1e58030cf24faa970a

      SHA1

      7846ef6f5bc59165a8422d5ebb6bd2c687a039ee

      SHA256

      dbd14b1045af098de2d861f487d534604afc06fcfbeed6c35ecef06b7ea2be0a

      SHA512

      6473234297caf5bd01a6e89e267631a10277042ab7808db414cf034b962501d85218cb07189f62bc33a2485d91b5649743ae4434af02c2d382e39defb6340270

    • \Users\Admin\AppData\Local\Temp\nsyF930.tmp\System.dll

      Filesize

      11KB

      MD5

      883eff06ac96966270731e4e22817e11

      SHA1

      523c87c98236cbc04430e87ec19b977595092ac8

      SHA256

      44e5dfd551b38e886214bd6b9c8ee913c4c4d1f085a6575d97c3e892b925da82

      SHA512

      60333253342476911c84bbc1d9bf8a29f811207787fdd6107dce8d2b6e031669303f28133ffc811971ed7792087fe90fb1faabc0af4e91c298ba51e28109a390

    • \Windows\Temp\nsoA9AA.tmp\System.dll

      Filesize

      11KB

      MD5

      883eff06ac96966270731e4e22817e11

      SHA1

      523c87c98236cbc04430e87ec19b977595092ac8

      SHA256

      44e5dfd551b38e886214bd6b9c8ee913c4c4d1f085a6575d97c3e892b925da82

      SHA512

      60333253342476911c84bbc1d9bf8a29f811207787fdd6107dce8d2b6e031669303f28133ffc811971ed7792087fe90fb1faabc0af4e91c298ba51e28109a390

    • memory/596-84-0x0000000000110000-0x0000000000187000-memory.dmp

      Filesize

      476KB

    • memory/596-90-0x000007FEFB801000-0x000007FEFB803000-memory.dmp

      Filesize

      8KB

    • memory/596-86-0x0000000000110000-0x0000000000187000-memory.dmp

      Filesize

      476KB

    • memory/836-68-0x0000000000000000-mapping.dmp

    • memory/856-54-0x0000000074D61000-0x0000000074D63000-memory.dmp

      Filesize

      8KB

    • memory/948-58-0x0000000000400000-0x00000000004A5000-memory.dmp

      Filesize

      660KB

    • memory/948-61-0x0000000000401FA3-mapping.dmp

    • memory/948-60-0x0000000000400000-0x00000000004A5000-memory.dmp

      Filesize

      660KB

    • memory/948-66-0x00000000008C0000-0x0000000000B0B000-memory.dmp

      Filesize

      2.3MB

    • memory/948-63-0x00000000006A0000-0x00000000008BA000-memory.dmp

      Filesize

      2.1MB

    • memory/948-57-0x0000000000400000-0x00000000004A5000-memory.dmp

      Filesize

      660KB

    • memory/948-65-0x0000000000400000-0x00000000004A4600-memory.dmp

      Filesize

      657KB

    • memory/1200-89-0x0000000000000000-mapping.dmp

    • memory/1284-96-0x0000000000000000-mapping.dmp

    • memory/1412-83-0x0000000000740000-0x000000000098B000-memory.dmp

      Filesize

      2.3MB

    • memory/1412-78-0x0000000000401FA3-mapping.dmp