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Analysis

  • max time kernel
    131s
  • max time network
    139s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    08/10/2024, 00:52

General

  • Target

    Act 3.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___DJHS_.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/3EF6-A927-0655-0446-90E1 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/3EF6-A927-0655-0446-90E1 2. http://p27dokhpz2n7nvgr.14ewqv.top/3EF6-A927-0655-0446-90E1 3. http://p27dokhpz2n7nvgr.14vvrc.top/3EF6-A927-0655-0446-90E1 4. http://p27dokhpz2n7nvgr.129p1t.top/3EF6-A927-0655-0446-90E1 5. http://p27dokhpz2n7nvgr.1apgrn.top/3EF6-A927-0655-0446-90E1 ----- Note! These are temporary addresses! They will be available for a limited amount of time! -----
URLs

http://p27dokhpz2n7nvgr.onion/3EF6-A927-0655-0446-90E1

http://p27dokhpz2n7nvgr.12hygy.top/3EF6-A927-0655-0446-90E1

http://p27dokhpz2n7nvgr.14ewqv.top/3EF6-A927-0655-0446-90E1

http://p27dokhpz2n7nvgr.14vvrc.top/3EF6-A927-0655-0446-90E1

http://p27dokhpz2n7nvgr.129p1t.top/3EF6-A927-0655-0446-90E1

http://p27dokhpz2n7nvgr.1apgrn.top/3EF6-A927-0655-0446-90E1

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 (1095) 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 startup file 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).

  • 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 1 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • 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 SetWindowsHookEx 3 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Act 3.exe
    "C:\Users\Admin\AppData\Local\Temp\Act 3.exe"
    1⤵
    • Drops startup file
    • 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
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2060
    • 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:2520
    • 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:2336
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___UI4ETW_.hta"
      2⤵
      • Blocklisted process makes network request
      • System Location Discovery: System Language Discovery
      • Modifies Internet Explorer settings
      • Suspicious use of SetWindowsHookEx
      PID:2624
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___DJHS_.txt
      2⤵
      • System Location Discovery: System Language Discovery
      • Opens file in notepad (likely ransom note)
      PID:940
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Deletes itself
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:828
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im "Act 3.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1168
      • 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:964

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\Tar1099.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

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

    Filesize

    1KB

    MD5

    c36f67e2a945e2090494add2cc9cdfb1

    SHA1

    cba15edeab947a39c57c67313a01b15778f5f34d

    SHA256

    446fadc6ff379e612cc0dc5f98b3c661b66537ee58ac409bad946ce3c4a284f7

    SHA512

    c15623b1b77a174ca41d03ed6aa68314bd97fc7bb1bf5a06de436363ddacfcfe129a3b4843c7e45257cd119600fddf97c52bcfe5ff2a2b267aad77fca53c42a2

  • C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___UI4ETW_.hta

    Filesize

    75KB

    MD5

    f166d5c743a9b4f20f15e73974b20c48

    SHA1

    2e1539c86b92cf10ec03be283b0e6fb4159ed501

    SHA256

    b447d7e1e61aa2b2a5fd5bc12064bc815eed2f3f7da9b8337b07387bad18dfa3

    SHA512

    ff02c4a6988f58ca47742338e6c11ecad3baec28175c79d9b1b6a0e2a4a6ab389ee064646e672afc5ef15eb247440d7c2e27d02bb3eea5a503956c9420d9e431

  • memory/2060-1-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/2060-0-0x0000000000630000-0x0000000000661000-memory.dmp

    Filesize

    196KB

  • memory/2060-2-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/2060-5-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/2060-116-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/2060-127-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/2060-137-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/2060-157-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB