Resubmissions

01-03-2024 20:38

240301-ze5pesdb79 3

01-03-2024 20:03

240301-ysybtsce5x 3

01-03-2024 18:44

240301-xdmfcabg67 3

01-03-2024 17:56

240301-wjhhxabb92 10

Analysis

  • max time kernel
    119s
  • max time network
    138s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    01-03-2024 17:56

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___JCGMJHB6_.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/25EB-1823-0FE9-0446-9C54 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/25EB-1823-0FE9-0446-9C54 2. http://p27dokhpz2n7nvgr.14ewqv.top/25EB-1823-0FE9-0446-9C54 3. http://p27dokhpz2n7nvgr.14vvrc.top/25EB-1823-0FE9-0446-9C54 4. http://p27dokhpz2n7nvgr.129p1t.top/25EB-1823-0FE9-0446-9C54 5. http://p27dokhpz2n7nvgr.1apgrn.top/25EB-1823-0FE9-0446-9C54 ----- Note! These are temporary addresses! They will be available for a limited amount of time! -----
URLs

http://p27dokhpz2n7nvgr.onion/25EB-1823-0FE9-0446-9C54

http://p27dokhpz2n7nvgr.12hygy.top/25EB-1823-0FE9-0446-9C54

http://p27dokhpz2n7nvgr.14ewqv.top/25EB-1823-0FE9-0446-9C54

http://p27dokhpz2n7nvgr.14vvrc.top/25EB-1823-0FE9-0446-9C54

http://p27dokhpz2n7nvgr.129p1t.top/25EB-1823-0FE9-0446-9C54

http://p27dokhpz2n7nvgr.1apgrn.top/25EB-1823-0FE9-0446-9C54

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:1660
    • C:\Windows\SysWOW64\netsh.exe
      C:\Windows\system32\netsh.exe advfirewall set allprofiles state on
      2⤵
      • Modifies Windows Firewall
      PID:2380
    • C:\Windows\SysWOW64\netsh.exe
      C:\Windows\system32\netsh.exe advfirewall reset
      2⤵
      • Modifies Windows Firewall
      PID:3044
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___MWDE_.hta"
      2⤵
      • Blocklisted process makes network request
      • Modifies Internet Explorer settings
      • Modifies system certificate store
      PID:1020
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___JCGMJHB6_.txt
      2⤵
      • Opens file in notepad (likely ransom note)
      PID:1120
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:2508
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im "cerber.exe"
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1644
      • C:\Windows\SysWOW64\PING.EXE
        ping -n 1 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:852

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\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
    Filesize

    67KB

    MD5

    753df6889fd7410a2e9fe333da83a429

    SHA1

    3c425f16e8267186061dd48ac1c77c122962456e

    SHA256

    b42dc237e44cbc9a43400e7d3f9cbd406dbdefd62bfe87328f8663897d69df78

    SHA512

    9d56f79410ad0cf852c74c3ef9454e7ae86e80bdd6ff67773994b48ccac71142bcf5c90635da6a056e1406e81e64674db9584928e867c55b77b59e2851cf6444

  • C:\Users\Admin\AppData\Local\Temp\Tar9AFF.tmp
    Filesize

    175KB

    MD5

    dd73cead4b93366cf3465c8cd32e2796

    SHA1

    74546226dfe9ceb8184651e920d1dbfb432b314e

    SHA256

    a6752b7851b591550e4625b832a393aabcc428de18d83e8593cd540f7d7cae22

    SHA512

    ce1bdd595065c94fa528badf4a6a8777893807d6789267612755df818ba6ffe55e4df429710aea29526ee4aa8ef20e25f2f05341da53992157d21ae032c0fb63

  • C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___JCGMJHB6_.txt
    Filesize

    1KB

    MD5

    ad25e0bf26922c5e740014d616822e6c

    SHA1

    9bf987ec56659f68cc2e00d5f6869142015ea301

    SHA256

    b1fbc0004abc2cfc4556448956590288df90e8d2af11447f19432749f5861817

    SHA512

    38f2b275626679898bc4a18ac63e296915a97f085ff7dfdd9373ed2e168b307d3e8a740cf0403ce8ec8e6c866a2e191eaf8558f4ce70ef73f103346f1e8a0844

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

    75KB

    MD5

    418015ecf2c674f556316deae89a4368

    SHA1

    4b2bbace53fab42199fb13a964009c70f1d8857a

    SHA256

    4f3e85b400f599fcb070fefc1e28e4546b3ece3abf2704cf8618e2f786c4e497

    SHA512

    bf4a1340995af397f190f7c9f364a1093be6275a81d8a4a2b3854c25931d2736cf2ca90fea71a8db9e5981341a46ef2ffd7091b1fcf44b96a7f6a34d6c650e4f

  • memory/1660-0-0x0000000000220000-0x0000000000251000-memory.dmp
    Filesize

    196KB

  • memory/1660-1-0x0000000000400000-0x0000000000435000-memory.dmp
    Filesize

    212KB

  • memory/1660-2-0x0000000000400000-0x0000000000435000-memory.dmp
    Filesize

    212KB

  • memory/1660-5-0x0000000000400000-0x0000000000435000-memory.dmp
    Filesize

    212KB

  • memory/1660-14-0x0000000000400000-0x0000000000435000-memory.dmp
    Filesize

    212KB

  • memory/1660-29-0x0000000000400000-0x0000000000435000-memory.dmp
    Filesize

    212KB

  • memory/1660-87-0x0000000000400000-0x0000000000435000-memory.dmp
    Filesize

    212KB

  • memory/1660-126-0x0000000000400000-0x0000000000435000-memory.dmp
    Filesize

    212KB