Analysis

  • max time kernel
    122s
  • max time network
    140s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    22-09-2024 08:35

General

  • Target

    42.exe

  • Size

    285KB

  • MD5

    20af51324fe5cadbeaedf2945ead21e8

  • SHA1

    3e24cc45468317f97e5491bfe89463c7933c1481

  • SHA256

    08136ea4cfafdb12d88a0a0dcb1dd05769dc329e6db100aac6c5502f16337925

  • SHA512

    cb1ece3e3c0d6cc1d6136ac1e783d851f1c34dbc7e5d752552ffa7b1a0d97056ca2de15ec7a4fce29ce67edcf7f8ddd6139fd43f15f93b14587768bc91bc2dbf

  • SSDEEP

    6144:nhj3y9UAgG0AmETEVJAHgStBRceZ6QO+YzoKZ:nLAgQsVJ0BRceZLO+YE

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___BE31_.txt

Family

cerber

Ransom Note
Hi, I'am CRBR ENCRYPTOR ;) ----- ALL YOUR DOCUMENTS, PH0TOS, DATABASES AND 0THER 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://qfjhpgbefuhenjp7.onion/E782-2084-9C71-009E-DCFC 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://qfjhpgbefuhenjp7.13iuvw.top/E782-2084-9C71-009E-DCFC 2. http://qfjhpgbefuhenjp7.158ugp.top/E782-2084-9C71-009E-DCFC 3. http://qfjhpgbefuhenjp7.1fcfjn.top/E782-2084-9C71-009E-DCFC 4. http://qfjhpgbefuhenjp7.1225wj.top/E782-2084-9C71-009E-DCFC 5. http://qfjhpgbefuhenjp7.1a2jzy.top/E782-2084-9C71-009E-DCFC ----- Note! These are temporary addresses! They will be available for a limited amount of time! -----
URLs

http://qfjhpgbefuhenjp7.onion/E782-2084-9C71-009E-DCFC

http://qfjhpgbefuhenjp7.13iuvw.top/E782-2084-9C71-009E-DCFC

http://qfjhpgbefuhenjp7.158ugp.top/E782-2084-9C71-009E-DCFC

http://qfjhpgbefuhenjp7.1fcfjn.top/E782-2084-9C71-009E-DCFC

http://qfjhpgbefuhenjp7.1225wj.top/E782-2084-9C71-009E-DCFC

http://qfjhpgbefuhenjp7.1a2jzy.top/E782-2084-9C71-009E-DCFC

Signatures

  • Cerber

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

  • Blocklisted process makes network request 1 IoCs
  • Contacts a large (1090) amount of remote hosts 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • Modifies Windows Firewall 2 TTPs 2 IoCs
  • 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
  • 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).

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Kills process with taskkill 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 1 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 WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\42.exe
    "C:\Users\Admin\AppData\Local\Temp\42.exe"
    1⤵
    • 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
    • System Location Discovery: System Language Discovery
    • Enumerates system info in registry
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2520
    • C:\Windows\SysWOW64\netsh.exe
      C:\Windows\system32\netsh.exe advfirewall set allprofiles state on
      2⤵
      • Modifies Windows Firewall
      • Event Triggered Execution: Netsh Helper DLL
      • System Location Discovery: System Language Discovery
      PID:2164
    • C:\Windows\SysWOW64\netsh.exe
      C:\Windows\system32\netsh.exe advfirewall reset
      2⤵
      • Modifies Windows Firewall
      • Event Triggered Execution: Netsh Helper DLL
      • System Location Discovery: System Language Discovery
      PID:2548
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___LFP99L5_.hta"
      2⤵
      • Blocklisted process makes network request
      • System Location Discovery: System Language Discovery
      • Modifies Internet Explorer settings
      PID:2972
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___BE31_.txt
      2⤵
      • System Location Discovery: System Language Discovery
      • Opens file in notepad (likely ransom note)
      PID:2076
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /d /c taskkill /f /im "4" > NUL & ping -n 1 127.0.0.1 > NUL & del "C" > NUL && exit
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:2052
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im "4"
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:400
      • C:\Windows\SysWOW64\PING.EXE
        ping -n 1 127.0.0.1
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Runs ping.exe
        PID:1808

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___BE31_.txt

    Filesize

    1KB

    MD5

    da2b7c9be1beb292eeba858679a28b7e

    SHA1

    8ccaf6c27deaab119f8c3d4da624d5897f94e185

    SHA256

    1400e434ce107d1b14f101d42292bd74e5e3f130be997b027be990ffd735a49b

    SHA512

    66c73d02c437d768ee8c7edeb732283a0f7e86e8e50de6d9b4cbda6d31924371398c6770fced7b58f49a6907940f220cd8d36cfa1b1b06c3f92c6a237d2259b8

  • C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___LFP99L5_.hta

    Filesize

    76KB

    MD5

    bdb72c03d6c544f8923a4beb862a8653

    SHA1

    190425dc84172c75f859d9f46363dcdb5556c291

    SHA256

    c14dda613b6e54e7d6dad75fa50c678ef5bcdd4c8b0a686bd66117e74ec7818d

    SHA512

    f497f09ea65699a47fcc6921d433949da092583668e0361741b05cd463a0b79e9c643e557e79a781310284533658b16afeebd0ae1a928c45fe62b412150d7400

  • memory/2520-0-0x0000000002400000-0x0000000002401000-memory.dmp

    Filesize

    4KB

  • memory/2520-1-0x00000000003E0000-0x00000000003E1000-memory.dmp

    Filesize

    4KB

  • memory/2520-2-0x0000000000400000-0x0000000000489000-memory.dmp

    Filesize

    548KB

  • memory/2520-3-0x0000000000400000-0x0000000000489000-memory.dmp

    Filesize

    548KB

  • memory/2520-6-0x0000000000400000-0x0000000000489000-memory.dmp

    Filesize

    548KB

  • memory/2520-119-0x0000000002400000-0x0000000002401000-memory.dmp

    Filesize

    4KB

  • memory/2520-120-0x00000000003E0000-0x00000000003E1000-memory.dmp

    Filesize

    4KB

  • memory/2520-140-0x0000000000400000-0x0000000000489000-memory.dmp

    Filesize

    548KB