Analysis

  • max time kernel
    120s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    12-03-2024 04:58

General

  • Target

    8ae3fd7c63fdc8bd79ab0890edd553d701482b7e90910b0eaa7e32f28b867e5c.exe

  • Size

    2.5MB

  • MD5

    e49ba2b2c27a164cf3b652069fc984c2

  • SHA1

    1a6c7d91286220e2c28a665f85633825ef578e95

  • SHA256

    8ae3fd7c63fdc8bd79ab0890edd553d701482b7e90910b0eaa7e32f28b867e5c

  • SHA512

    2c4336dc6e062483753d760c339fb4bd7e6e06dfc5b9b25d4b05885414a9b7a5b9c62931558c31f1f398862c111ad35c6389c1ee3af15af2d2cbc3db85ecc670

  • SSDEEP

    49152:+L2K7HrOi1eIhFwRncwD0FnPYAEhd/KOw8QwsJM60lQYJnn3Ect76:wd7Hrhh2RcYonAJ6BM667nnRt

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\_READ_THIS_FILE_99PY4A_.txt

Ransom Note
----- "CERBER RANSOMWARE" ----- YOUR DOCUMENTS, PHOT0S, DATABASES AND OTHER IMPORTANT FILES HAVE BEEN ENCRYPTED ----- The only way to decrypt your 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/09FD-833B-CA5B-0091-B851 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.1hkjl3.top/09FD-833B-CA5B-0091-B851 2. http://p27dokhpz2n7nvgr.16nxpn.top/09FD-833B-CA5B-0091-B851 3. http://p27dokhpz2n7nvgr.133chr.top/09FD-833B-CA5B-0091-B851 4. http://p27dokhpz2n7nvgr.17gvad.top/09FD-833B-CA5B-0091-B851 5. http://p27dokhpz2n7nvgr.15yvce.top/09FD-833B-CA5B-0091-B851 ----- Note! These are temporary addresses! They will be available for a limited amount of time! -----
URLs

http://p27dokhpz2n7nvgr.onion/09FD-833B-CA5B-0091-B851

http://p27dokhpz2n7nvgr.1hkjl3.top/09FD-833B-CA5B-0091-B851

http://p27dokhpz2n7nvgr.16nxpn.top/09FD-833B-CA5B-0091-B851

http://p27dokhpz2n7nvgr.133chr.top/09FD-833B-CA5B-0091-B851

http://p27dokhpz2n7nvgr.17gvad.top/09FD-833B-CA5B-0091-B851

http://p27dokhpz2n7nvgr.15yvce.top/09FD-833B-CA5B-0091-B851

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
  • Suspicious use of NtSetInformationThreadHideFromDebugger 4 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 SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8ae3fd7c63fdc8bd79ab0890edd553d701482b7e90910b0eaa7e32f28b867e5c.exe
    "C:\Users\Admin\AppData\Local\Temp\8ae3fd7c63fdc8bd79ab0890edd553d701482b7e90910b0eaa7e32f28b867e5c.exe"
    1⤵
    • Drops file in System32 directory
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2144
    • C:\Windows\SysWOW64\netsh.exe
      C:\Windows\system32\netsh.exe advfirewall set allprofiles state on
      2⤵
      • Modifies Windows Firewall
      PID:2568
    • C:\Windows\SysWOW64\netsh.exe
      C:\Windows\system32\netsh.exe advfirewall reset
      2⤵
      • Modifies Windows Firewall
      PID:2524
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\_READ_THIS_FILE_WT6FKC_.hta"
      2⤵
      • Blocklisted process makes network request
      • Modifies Internet Explorer settings
      • Modifies system certificate store
      PID:556
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\_READ_THIS_FILE_99PY4A_.txt
      2⤵
      • Opens file in notepad (likely ransom note)
      PID:564
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:1924
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im "8ae3fd7c63fdc8bd79ab0890edd553d701482b7e90910b0eaa7e32f28b867e5c.exe"
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:2640
      • C:\Windows\SysWOW64\PING.EXE
        ping -n 1 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:844

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

2
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

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\TarAA2.tmp
    Filesize

    175KB

    MD5

    dd73cead4b93366cf3465c8cd32e2796

    SHA1

    74546226dfe9ceb8184651e920d1dbfb432b314e

    SHA256

    a6752b7851b591550e4625b832a393aabcc428de18d83e8593cd540f7d7cae22

    SHA512

    ce1bdd595065c94fa528badf4a6a8777893807d6789267612755df818ba6ffe55e4df429710aea29526ee4aa8ef20e25f2f05341da53992157d21ae032c0fb63

  • C:\Users\Admin\Desktop\_READ_THIS_FILE_99PY4A_.txt
    Filesize

    1KB

    MD5

    96bdd86ed8cacd6d9279b54d74ba2b99

    SHA1

    835f5f43ecfa4fa9fe072dff6a841663be8a0b55

    SHA256

    61aeb3884dd2074f69a958f85a09c822ea3a7a410554eff307c6e94222ff1c1c

    SHA512

    1df37ca5588153a962cbfcdf29c50bfabf7a0f9c131a466ebcc8e02fee48a3afffe4f544dbe1c8b41daabf44bb486a190fb69d31b34e11245eecd33cffdfdff6

  • C:\Users\Admin\Desktop\_READ_THIS_FILE_WT6FKC_.hta
    Filesize

    75KB

    MD5

    2dc99289b9c4a55bfe43adb998983a7c

    SHA1

    16ae9b906f7bc4e50c8e5059d3b09863e5a406be

    SHA256

    e7ae2c8a30d2c4d9d4ab351e0f5f1ff85381a76fcdc9bd931207332697717055

    SHA512

    6c6f3944d5ac8e4f70a5c49a9e2ad5addad3f6c9dc9b2d055edfebd4d9f2750047f215bfc50f95d4566e94b0b08eb06a97176394e6518b53482762ec80f5728e

  • memory/2144-4-0x0000000000400000-0x0000000000DEB000-memory.dmp
    Filesize

    9.9MB

  • memory/2144-6-0x0000000000400000-0x0000000000DEB000-memory.dmp
    Filesize

    9.9MB

  • memory/2144-7-0x0000000000400000-0x0000000000DEB000-memory.dmp
    Filesize

    9.9MB

  • memory/2144-10-0x0000000000400000-0x0000000000DEB000-memory.dmp
    Filesize

    9.9MB

  • memory/2144-11-0x0000000000400000-0x0000000000DEB000-memory.dmp
    Filesize

    9.9MB

  • memory/2144-12-0x000000007EBD0000-0x000000007EFA1000-memory.dmp
    Filesize

    3.8MB

  • memory/2144-53-0x0000000001080000-0x0000000001081000-memory.dmp
    Filesize

    4KB

  • memory/2144-56-0x0000000005030000-0x0000000005040000-memory.dmp
    Filesize

    64KB

  • memory/2144-1-0x0000000000400000-0x0000000000DEB000-memory.dmp
    Filesize

    9.9MB

  • memory/2144-5-0x0000000002800000-0x0000000002801000-memory.dmp
    Filesize

    4KB

  • memory/2144-76-0x0000000000400000-0x0000000000DEB000-memory.dmp
    Filesize

    9.9MB

  • memory/2144-3-0x0000000001080000-0x0000000001081000-memory.dmp
    Filesize

    4KB

  • memory/2144-2-0x000000007EBD0000-0x000000007EFA1000-memory.dmp
    Filesize

    3.8MB