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Analysis

  • max time kernel
    1563s
  • max time network
    1568s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    19/02/2024, 14:13

General

  • Target

    cerber.exe

  • Size

    604KB

  • MD5

    8b6bc16fd137c09a08b02bbe1bb7d670

  • SHA1

    c69a0f6c6f809c01db92ca658fcf1b643391a2b7

  • SHA256

    e67834d1e8b38ec5864cfa101b140aeaba8f1900a6e269e6a94c90fcbfe56678

  • SHA512

    b53d2cc0fe5fa52262ace9f6e6ea3f5ce84935009822a3394bfe49c4d15dfeaa96bfe10ce77ffa93dbf81e5428122aa739a94bc709f203bc346597004fd75a24

  • SSDEEP

    6144:yYghlI5/u8f1mr+4RJ99MpDa52RX5wRDhOOU0qsR:yYKlYmDXEpDHRXP01

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___XT5YWE_.txt

Family

cerber

Ransom Note
CERBER RANSOMWARE ----- YOUR DOCUMENTS, PH0TOS, DATABASES AND OTHER IMPORTANT FILES HAVE BEEN ENCRYPTED! ----- The only way to decrypt y0ur files is to receive the private key and decryption program. To receive the private key and decryption program go to any decrypted folder, inside there is the special file (*_READ_THIS_FILE_*) with complete instructions how to decrypt your files. If you cannot find any (*_READ_THIS_FILE_*) file at your PC, follow the instructions below: ----- 1. Download "Tor Browser" from https://www.torproject.org/ and install it. 2. In the "Tor Browser" open your personal page here: http://p27dokhpz2n7nvgr.onion/91D7-7A7B-B1A4-0446-9640 Note! This page is available via "Tor Browser" only. ----- Also you can use temporary addresses on your personal page without using "Tor Browser". ----- 1. http://p27dokhpz2n7nvgr.12hygy.top/91D7-7A7B-B1A4-0446-9640 2. http://p27dokhpz2n7nvgr.14ewqv.top/91D7-7A7B-B1A4-0446-9640 3. http://p27dokhpz2n7nvgr.14vvrc.top/91D7-7A7B-B1A4-0446-9640 4. http://p27dokhpz2n7nvgr.129p1t.top/91D7-7A7B-B1A4-0446-9640 5. http://p27dokhpz2n7nvgr.1apgrn.top/91D7-7A7B-B1A4-0446-9640 ----- Note! These are temporary addresses! They will be available for a limited amount of time! -----
URLs

http://p27dokhpz2n7nvgr.onion/91D7-7A7B-B1A4-0446-9640

http://p27dokhpz2n7nvgr.12hygy.top/91D7-7A7B-B1A4-0446-9640

http://p27dokhpz2n7nvgr.14ewqv.top/91D7-7A7B-B1A4-0446-9640

http://p27dokhpz2n7nvgr.14vvrc.top/91D7-7A7B-B1A4-0446-9640

http://p27dokhpz2n7nvgr.129p1t.top/91D7-7A7B-B1A4-0446-9640

http://p27dokhpz2n7nvgr.1apgrn.top/91D7-7A7B-B1A4-0446-9640

Signatures

  • Cerber

    Cerber is a widely used ransomware-as-a-service (RaaS), first seen in 2017.

  • Blocklisted process makes network request 5 IoCs
  • Contacts a large (1094) amount of remote hosts 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • Modifies Windows Firewall 2 TTPs 2 IoCs
  • Deletes itself 1 IoCs
  • Drops file in System32 directory 38 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Drops file in Program Files directory 20 IoCs
  • Drops file in Windows directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Kills process with taskkill 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cerber.exe
    "C:\Users\Admin\AppData\Local\Temp\cerber.exe"
    1⤵
    • Drops file in System32 directory
    • Sets desktop wallpaper using registry
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2372
    • C:\Windows\SysWOW64\netsh.exe
      C:\Windows\system32\netsh.exe advfirewall set allprofiles state on
      2⤵
      • Modifies Windows Firewall
      PID:2432
    • C:\Windows\SysWOW64\netsh.exe
      C:\Windows\system32\netsh.exe advfirewall reset
      2⤵
      • Modifies Windows Firewall
      PID:2812
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___9ZES7QQX_.hta"
      2⤵
      • Blocklisted process makes network request
      • Modifies Internet Explorer settings
      • Modifies system certificate store
      PID:2236
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___XT5YWE_.txt
      2⤵
      • Opens file in notepad (likely ransom note)
      PID:1960
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:2016
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im "cerber.exe"
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:2004
      • C:\Windows\SysWOW64\PING.EXE
        ping -n 1 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:2440

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\CabAC58.tmp

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\Temp\TarACB8.tmp

    Filesize

    171KB

    MD5

    9c0c641c06238516f27941aa1166d427

    SHA1

    64cd549fb8cf014fcd9312aa7a5b023847b6c977

    SHA256

    4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

    SHA512

    936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

  • C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___9ZES7QQX_.hta

    Filesize

    75KB

    MD5

    4c7cff23be56f39fb42597e7f61dcaf3

    SHA1

    ba8e8c3a61790dfe3cd81def850f3df5767523a2

    SHA256

    dfb574eab48e2d6eb12b2bfd11242be40fbc835c3014489b30b893eea97d9b45

    SHA512

    bc5d9a197c57db2e5fca6e3b02daf925fd2b33d2d944ac3a5b5995633db9912e3fec992cd555717b5ee5df2fee2dc429803d4fbcb8896609f1f4b25aa3f88c8d

  • C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___XT5YWE_.txt

    Filesize

    1KB

    MD5

    e50269b568f9c6d4560bc896acc82f2f

    SHA1

    d1ee7d25f4079b4628c566ee3fa9c7acd3811a77

    SHA256

    aa9f60120cad3e0bc034bc95ff93478a1f6b7667ed4a7c0cc99451ec534e94f3

    SHA512

    d2bb7c5be2c31516806d0151edc22fb05b5d1f1a1a2212a9dcb9861bc0170b2422d7d7d50925e40d8ea7933ae214787e2b251604f544b00b65bff32b7213501c

  • memory/2372-9-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/2372-11-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/2372-13-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/2372-22-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/2372-31-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/2372-36-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/2372-93-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/2372-0-0x0000000000230000-0x0000000000261000-memory.dmp

    Filesize

    196KB

  • memory/2372-5-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/2372-134-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/2372-2-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/2372-1-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB