Resubmissions

21-02-2024 14:33

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21-02-2024 14:31

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21-02-2024 11:52

240221-n1xedseg6t 10

Analysis

  • max time kernel
    145s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    21-02-2024 14:33

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___7D9973_.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/39BC-AE44-C33F-0446-9C89 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/39BC-AE44-C33F-0446-9C89 2. http://p27dokhpz2n7nvgr.14ewqv.top/39BC-AE44-C33F-0446-9C89 3. http://p27dokhpz2n7nvgr.14vvrc.top/39BC-AE44-C33F-0446-9C89 4. http://p27dokhpz2n7nvgr.129p1t.top/39BC-AE44-C33F-0446-9C89 5. http://p27dokhpz2n7nvgr.1apgrn.top/39BC-AE44-C33F-0446-9C89 ----- Note! These are temporary addresses! They will be available for a limited amount of time! -----
URLs

http://p27dokhpz2n7nvgr.onion/39BC-AE44-C33F-0446-9C89

http://p27dokhpz2n7nvgr.12hygy.top/39BC-AE44-C33F-0446-9C89

http://p27dokhpz2n7nvgr.14ewqv.top/39BC-AE44-C33F-0446-9C89

http://p27dokhpz2n7nvgr.14vvrc.top/39BC-AE44-C33F-0446-9C89

http://p27dokhpz2n7nvgr.129p1t.top/39BC-AE44-C33F-0446-9C89

http://p27dokhpz2n7nvgr.1apgrn.top/39BC-AE44-C33F-0446-9C89

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:1448
    • C:\Windows\SysWOW64\netsh.exe
      C:\Windows\system32\netsh.exe advfirewall set allprofiles state on
      2⤵
      • Modifies Windows Firewall
      PID:1592
    • C:\Windows\SysWOW64\netsh.exe
      C:\Windows\system32\netsh.exe advfirewall reset
      2⤵
      • Modifies Windows Firewall
      PID:2668
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___KWLICGS_.hta"
      2⤵
      • Blocklisted process makes network request
      • Modifies Internet Explorer settings
      • Modifies system certificate store
      PID:1924
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___7D9973_.txt
      2⤵
      • Opens file in notepad (likely ransom note)
      PID:844
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:2660
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im "cerber.exe"
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:2224
      • C:\Windows\SysWOW64\PING.EXE
        ping -n 1 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:608

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\Cab4F79.tmp

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\Temp\Tar4F8C.tmp

    Filesize

    171KB

    MD5

    9c0c641c06238516f27941aa1166d427

    SHA1

    64cd549fb8cf014fcd9312aa7a5b023847b6c977

    SHA256

    4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

    SHA512

    936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

  • C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___7D9973_.txt

    Filesize

    1KB

    MD5

    37f5f3b4441d928659ffcabd02dd30d3

    SHA1

    e080d0a096d92a6ed6f4f86ba449ee27db25d709

    SHA256

    b1a27366243c5bd7d20b29e089d8afd492653fb7cda9c70649bd14b64c3c512d

    SHA512

    57fa0f4eba96a2f085c46ace1dfcf13f18c8f87a0288dd53c55dfa87d6220d7a5e8d01c687ca06e9710e1a411cf71a721bbeab017a211f6dda182bfc24db8cce

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

    Filesize

    75KB

    MD5

    4b5a6bb7e616ca3221f121dab1763bf1

    SHA1

    30b01490f426ea54879a1ec5bb13270684b0c8f1

    SHA256

    790803ec9f4752fe3c13faf64f1d866c8cda54f9f5c2afd322477e9b822ef3f4

    SHA512

    dfd55aee0fe65fe53638e6868d75987e6110f684d41bdd72b8fa7a7f982081768b8546c883c84516810f0d043535ef641ed737c17c9d688cd965aaff3821f00c

  • memory/1448-0-0x0000000000220000-0x0000000000251000-memory.dmp

    Filesize

    196KB

  • memory/1448-1-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/1448-2-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/1448-5-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/1448-9-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/1448-74-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/1448-112-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB