Overview

overview

10

Static

static

1

b3e1e9d97d...7d.exe

windows7-x64

10

b3e1e9d97d...7d.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    120s
  • max time network
    133s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    26-02-2024 14:23

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General

  • Target

    b3e1e9d97d74c416c2a30dd11858789af5554cf2de62f577c13944a19623777d.exe

  • Size

    313KB

  • MD5

    fe1bc60a95b2c2d77cd5d232296a7fa4

  • SHA1

    c07dfdea8da2da5bad036e7c2f5d37582e1cf684

  • SHA256

    b3e1e9d97d74c416c2a30dd11858789af5554cf2de62f577c13944a19623777d

  • SHA512

    266c541a421878e1e175db5d94185c991cec5825a4bc50178f57264f3556080e6fe984ed0380acf022ce659aa1ca46c9a5e97efc25ff46cbfd67b9385fd75f89

  • SSDEEP

    6144:nl578cxdGY87FohbnmM2i8ito7wTmCbL94KCT3OAmK:nl59zH8MiM2z+NLQBN

Score
10/10
cerberdiscoveryevasionransomware

Malware Config

Extracted

Path

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

Family

cerber

Ransom Note
Hi, I'am CRBR ENCRYPTOR ;) ----- ALL YOUR DOCUMENTS, PH0T0S, DATABASES AND OTHER IMPORTANT FILES HAVE BEEN ENCRYPTED! ----- The only one 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 (*_R_E_A_D___T_H_I_S_*) with complete instructions how to decrypt your files. If you cannot find any (*_R_E_A_D___T_H_I_S_*) 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://xpcx6erilkjced3j.onion/04C2-A29F-9B79-0098-B3F0 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://xpcx6erilkjced3j.1n5mod.top/04C2-A29F-9B79-0098-B3F0 2. http://xpcx6erilkjced3j.19kdeh.top/04C2-A29F-9B79-0098-B3F0 3. http://xpcx6erilkjced3j.1mpsnr.top/04C2-A29F-9B79-0098-B3F0 4. http://xpcx6erilkjced3j.18ey8e.top/04C2-A29F-9B79-0098-B3F0 5. http://xpcx6erilkjced3j.17gcun.top/04C2-A29F-9B79-0098-B3F0 ----- Note! These are temporary addresses! They will be available for a limited amount of time! -----
URLs

http://xpcx6erilkjced3j.onion/04C2-A29F-9B79-0098-B3F0

http://xpcx6erilkjced3j.1n5mod.top/04C2-A29F-9B79-0098-B3F0

http://xpcx6erilkjced3j.19kdeh.top/04C2-A29F-9B79-0098-B3F0

http://xpcx6erilkjced3j.1mpsnr.top/04C2-A29F-9B79-0098-B3F0

http://xpcx6erilkjced3j.18ey8e.top/04C2-A29F-9B79-0098-B3F0

http://xpcx6erilkjced3j.17gcun.top/04C2-A29F-9B79-0098-B3F0

Signatures

  • Cerber

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

    ransomwarecerber
  • 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.

    discovery
  • Modifies Windows Firewall 2 TTPs 2 IoCs
    evasion
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 38 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
    ransomware
  • 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
    evasion
  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
    adwarespyware
  • Modifies system certificate store 2 TTPs 3 IoCs
    evasionspywaretrojan
  • Opens file in notepad (likely ransom note) 1 IoCs
    ransomware
  • 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\b3e1e9d97d74c416c2a30dd11858789af5554cf2de62f577c13944a19623777d.exe
    "C:\Users\Admin\AppData\Local\Temp\b3e1e9d97d74c416c2a30dd11858789af5554cf2de62f577c13944a19623777d.exe"
    1⤵
    • Enumerates connected drives
    • 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:2176
    • C:\Windows\SysWOW64\netsh.exe
      C:\Windows\system32\netsh.exe advfirewall set allprofiles state on
      2⤵
      • Modifies Windows Firewall
      PID:2668
    • C:\Windows\SysWOW64\netsh.exe
      C:\Windows\system32\netsh.exe advfirewall reset
      2⤵
      • Modifies Windows Firewall
      PID:2976
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___97NWZ8_.hta"
      2⤵
      • Blocklisted process makes network request
      • Modifies Internet Explorer settings
      • Modifies system certificate store
      PID:1552
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___FEBSXS_.txt
      2⤵
      • Opens file in notepad (likely ransom note)
      PID:1464
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /d /c taskkill /f /im "b" > NUL & ping -n 1 127.0.0.1 > NUL & del "C" > NUL && exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:684
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im "b"
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1092
      • C:\Windows\SysWOW64\PING.EXE
        ping -n 1 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:1748

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\Cab480A.tmp
    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

    Download Submit

  • C:\Users\Admin\AppData\Local\Temp\Tar481D.tmp
    Filesize

    171KB

    MD5

    9c0c641c06238516f27941aa1166d427

    SHA1

    64cd549fb8cf014fcd9312aa7a5b023847b6c977

    SHA256

    4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

    SHA512

    936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

    Download Submit

  • C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___97NWZ8_.hta
    Filesize

    76KB

    MD5

    32dbfa7dbcf2680b9ffff86661cf4815

    SHA1

    1689dfa621fc52413d8823ed02a87c07e3010a75

    SHA256

    5b6075db44692fb4ae4f491a8daaf12be1352157a8db92ebf789d1c95b5cb1cd

    SHA512

    2417a740f5d6c7fd598dd14f79eda5aac85ce41c9128fd089bd2ed93533b4d1a7f22f5f36805121b30da69f5503016641f0e16a4bc2eaac66ece03d3252bede8

    Download Submit

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

    1KB

    MD5

    0ce028878a46a5a6f0837cabb2b64e13

    SHA1

    61703606d1b4c975719215997326c22e0735b6ab

    SHA256

    6e1e78b50c8b8cdfabd2cdd44b2030ffa637e802e527874dcb1e37e626dfad4e

    SHA512

    7e84b5a6efb743874c9666d69082bec880d87a1aa960abdc8289892b495b175250c691f128ee6af28ec4eacfa379094bd8c2c8b969237dd41ec225f0e0700fee

    Download Submit

  • memory/2176-0-0x0000000000310000-0x0000000000341000-memory.dmp

    Filesize

    196KB

    Download

  • memory/2176-1-0x0000000000400000-0x0000000000433000-memory.dmp

    Filesize

    204KB

    Download

  • memory/2176-2-0x0000000000400000-0x0000000000433000-memory.dmp

    Filesize

    204KB

    Download

  • memory/2176-5-0x0000000000400000-0x0000000000433000-memory.dmp

    Filesize

    204KB

    Download

  • memory/2176-90-0x0000000000400000-0x0000000000433000-memory.dmp

    Filesize

    204KB

    Download

  • memory/2176-128-0x0000000000400000-0x0000000000433000-memory.dmp

    Filesize

    204KB

    Download