Overview

overview

10

Static

static

1

b3e1e9d97d...7d.exe

windows7-x64

10

b3e1e9d97d...7d.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-03-2024 20:52

Sharing

Copy URL
Twitter E-mail
Report Analysis Logs

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\AppData\Roaming\Microsoft\OneNote\16.0\_R_E_A_D___T_H_I_S___TVGK_.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/9FC6-FF22-66BA-0098-BD14 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/9FC6-FF22-66BA-0098-BD14 2. http://xpcx6erilkjced3j.19kdeh.top/9FC6-FF22-66BA-0098-BD14 3. http://xpcx6erilkjced3j.1mpsnr.top/9FC6-FF22-66BA-0098-BD14 4. http://xpcx6erilkjced3j.18ey8e.top/9FC6-FF22-66BA-0098-BD14 5. http://xpcx6erilkjced3j.17gcun.top/9FC6-FF22-66BA-0098-BD14 ----- Note! These are temporary addresses! They will be available for a limited amount of time! -----
URLs

http://xpcx6erilkjced3j.onion/9FC6-FF22-66BA-0098-BD14

http://xpcx6erilkjced3j.1n5mod.top/9FC6-FF22-66BA-0098-BD14

http://xpcx6erilkjced3j.19kdeh.top/9FC6-FF22-66BA-0098-BD14

http://xpcx6erilkjced3j.1mpsnr.top/9FC6-FF22-66BA-0098-BD14

http://xpcx6erilkjced3j.18ey8e.top/9FC6-FF22-66BA-0098-BD14

http://xpcx6erilkjced3j.17gcun.top/9FC6-FF22-66BA-0098-BD14

Signatures

  • Cerber

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

    ransomwarecerber
  • Contacts a large (1104) 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
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 1 IoCs
  • 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 registry class 1 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
    ransomware
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b3e1e9d97d74c416c2a30dd11858789af5554cf2de62f577c13944a19623777d.exe
    "C:\Users\Admin\AppData\Local\Temp\b3e1e9d97d74c416c2a30dd11858789af5554cf2de62f577c13944a19623777d.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Enumerates connected drives
    • Drops file in System32 directory
    • Sets desktop wallpaper using registry
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3760
    • C:\Windows\SysWOW64\netsh.exe
      C:\Windows\system32\netsh.exe advfirewall set allprofiles state on
      2⤵
      • Modifies Windows Firewall
      PID:1620
    • C:\Windows\SysWOW64\netsh.exe
      C:\Windows\system32\netsh.exe advfirewall reset
      2⤵
      • Modifies Windows Firewall
      PID:4180
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___BCIM6_.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
      2⤵
        PID:4656
      • C:\Windows\SysWOW64\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___6MUF9JB3_.txt
        2⤵
        • Opens file in notepad (likely ransom note)
        PID:4356
      • 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:3828
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /f /im "b"
          3⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:1248
        • C:\Windows\SysWOW64\PING.EXE
          ping -n 1 127.0.0.1
          3⤵
          • Runs ping.exe
          PID:2256

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Initial Access

    Execution

    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

    1
    T1112

    Credential Access

    Discovery

    Network Service Discovery

    1
    T1046

    Query Registry

    2
    T1012

    System Information Discovery

    3
    T1082

    Peripheral Device Discovery

    1
    T1120

    Remote System Discovery

    1
    T1018

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Defacement

    1
    T1491

    Resource Development

    Reconnaissance

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\OneNote\16.0\cache\_R_E_A_D___T_H_I_S___X58N58_.hta
      Filesize

      76KB

      MD5

      b5cf7542a1e34820a7829c761bf7bc2c

      SHA1

      3ab778432c1e4b203472ee4ca7b25a68a6f14fb7

      SHA256

      d36914aee3632fd728a1d1ff3ccc7b1e51cb7d9b4a62bcae1c405c3dd23f15b5

      SHA512

      c7536c979398f0fa115a6ede9bd6504b9c3a88d6d45cbb13fbda1eaef2d1199444e69f7626e632c29bb441957207e806fce81ba69569332c8ab54707fa7abbb5

      Download Submit
    • C:\Users\Admin\AppData\Roaming\Microsoft\OneNote\16.0\_R_E_A_D___T_H_I_S___TVGK_.txt
      Filesize

      1KB

      MD5

      55d9c783000d5c89d6d7acb5682b718b

      SHA1

      8a7eca89336c64f888a4a76c906816f5636f5adb

      SHA256

      fbac9ad43a5fdc5c0663a25a8ddfae13100b5ac963bee80b37bc97fafd54c36f

      SHA512

      5579b048923a4af21935f4290cf894fba4557cc95da7616040ba3aad3e62c079dcc2d8d0e699a4b6f331e5d2181c826604af3821f80309f4c948c87cb2055322

      Download Submit
    • memory/3760-14-0x0000000000400000-0x0000000000433000-memory.dmp
      Filesize

      204KB

      Download
    • memory/3760-6-0x0000000000400000-0x0000000000433000-memory.dmp
      Filesize

      204KB

      Download
    • memory/3760-8-0x0000000000400000-0x0000000000433000-memory.dmp
      Filesize

      204KB

      Download
    • memory/3760-12-0x0000000000400000-0x0000000000433000-memory.dmp
      Filesize

      204KB

      Download
    • memory/3760-0-0x0000000001500000-0x0000000001531000-memory.dmp
      Filesize

      196KB

      Download
    • memory/3760-19-0x0000000000400000-0x0000000000433000-memory.dmp
      Filesize

      204KB

      Download
    • memory/3760-20-0x0000000000400000-0x0000000000433000-memory.dmp
      Filesize

      204KB

      Download
    • memory/3760-33-0x0000000000400000-0x0000000000433000-memory.dmp
      Filesize

      204KB

      Download
    • memory/3760-2-0x0000000000400000-0x0000000000433000-memory.dmp
      Filesize

      204KB

      Download
    • memory/3760-1-0x0000000000400000-0x0000000000433000-memory.dmp
      Filesize

      204KB

      Download
    • memory/3760-392-0x0000000000400000-0x0000000000433000-memory.dmp
      Filesize

      204KB

      Download
    • memory/3760-410-0x0000000000400000-0x0000000000433000-memory.dmp
      Filesize

      204KB

      Download
    • memory/3760-417-0x0000000000440000-0x000000000044E000-memory.dmp
      Filesize

      56KB

      Download