Analysis

  • max time kernel
    119s
  • max time network
    132s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    10-02-2024 18:24

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___0YB9L1C4_.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/A4C3-8278-320A-0446-9013 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/A4C3-8278-320A-0446-9013 2. http://p27dokhpz2n7nvgr.14ewqv.top/A4C3-8278-320A-0446-9013 3. http://p27dokhpz2n7nvgr.14vvrc.top/A4C3-8278-320A-0446-9013 4. http://p27dokhpz2n7nvgr.129p1t.top/A4C3-8278-320A-0446-9013 5. http://p27dokhpz2n7nvgr.1apgrn.top/A4C3-8278-320A-0446-9013 ----- Note! These are temporary addresses! They will be available for a limited amount of time! -----
URLs

http://p27dokhpz2n7nvgr.onion/A4C3-8278-320A-0446-9013

http://p27dokhpz2n7nvgr.12hygy.top/A4C3-8278-320A-0446-9013

http://p27dokhpz2n7nvgr.14ewqv.top/A4C3-8278-320A-0446-9013

http://p27dokhpz2n7nvgr.14vvrc.top/A4C3-8278-320A-0446-9013

http://p27dokhpz2n7nvgr.129p1t.top/A4C3-8278-320A-0446-9013

http://p27dokhpz2n7nvgr.1apgrn.top/A4C3-8278-320A-0446-9013

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:2056
    • C:\Windows\SysWOW64\netsh.exe
      C:\Windows\system32\netsh.exe advfirewall set allprofiles state on
      2⤵
      • Modifies Windows Firewall
      PID:1832
    • C:\Windows\SysWOW64\netsh.exe
      C:\Windows\system32\netsh.exe advfirewall reset
      2⤵
      • Modifies Windows Firewall
      PID:2328
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___A0EM5NBR_.hta"
      2⤵
      • Blocklisted process makes network request
      • Modifies Internet Explorer settings
      • Modifies system certificate store
      PID:772
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___0YB9L1C4_.txt
      2⤵
      • Opens file in notepad (likely ransom note)
      PID:1588
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:1624
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im "cerber.exe"
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:2600
      • C:\Windows\SysWOW64\PING.EXE
        ping -n 1 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:1852

Network

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Privilege Escalation

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Defense Evasion

Impair Defenses

1
T1562

Disable or Modify System Firewall

1
T1562.004

Modify Registry

3
T1112

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Discovery

Network Service Discovery

1
T1046

System Information Discovery

1
T1082

Remote System Discovery

1
T1018

Impact

Defacement

1
T1491

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\Cab41D3.tmp
    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\Temp\Tar41E5.tmp
    Filesize

    171KB

    MD5

    9c0c641c06238516f27941aa1166d427

    SHA1

    64cd549fb8cf014fcd9312aa7a5b023847b6c977

    SHA256

    4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

    SHA512

    936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

  • C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___0YB9L1C4_.txt
    Filesize

    1KB

    MD5

    68ed72508daddde49aa2f8523ebd1d4b

    SHA1

    52020c2b01be49a2458b254774eec8a068195283

    SHA256

    6f3cbb8070d023bd5fdeaadcb2d020d46134b7b7c2d50d7ee18e603dafa48872

    SHA512

    85c4a28a684d98736002c516e2173193952bf4f87701b886b8bef22bd60c4ab45be27bb4cfc53b1fbb001760f5b001e6333d6834097e2a3213da05634eea97a5

  • C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___A0EM5NBR_.hta
    Filesize

    75KB

    MD5

    165e6336a8e5d034cea21fe5e2ef2bd7

    SHA1

    51707c710bc4160e0968aed68c0a8a9385e059a9

    SHA256

    434275467297f7dbb39fa5e029250433a7fb3962440ab6ce7411b50f0a5cff2b

    SHA512

    f87c9905f43ced4cc0959acd06be04b85b276af0956b484bf45a6ae13afb91dddcd57032577d527f46fece6b17b7fe79a92c14e456d57efa69b85d562ea2d4ed

  • memory/2056-0-0x00000000002A0000-0x00000000002D1000-memory.dmp
    Filesize

    196KB

  • memory/2056-1-0x0000000000400000-0x0000000000435000-memory.dmp
    Filesize

    212KB

  • memory/2056-2-0x0000000000400000-0x0000000000435000-memory.dmp
    Filesize

    212KB

  • memory/2056-5-0x0000000000400000-0x0000000000435000-memory.dmp
    Filesize

    212KB

  • memory/2056-9-0x0000000000400000-0x0000000000435000-memory.dmp
    Filesize

    212KB

  • memory/2056-11-0x0000000000400000-0x0000000000435000-memory.dmp
    Filesize

    212KB

  • memory/2056-63-0x0000000000400000-0x0000000000435000-memory.dmp
    Filesize

    212KB

  • memory/2056-102-0x0000000000400000-0x0000000000435000-memory.dmp
    Filesize

    212KB