Overview

overview

10

Static

static

3

3ac7f91e37...38.exe

windows7-x64

10

3ac7f91e37...38.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    130s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-08-2024 14:52

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General

  • Target

    3ac7f91e37572c0d15de4de96ab4719531c30536409fda4acb3e0071ab726338.exe

  • Size

    390KB

  • MD5

    08109df08fa4a035c59d56d1e6c5baf4

  • SHA1

    bec86bce6f6963d0cc69c441c6d5fb6d04d3a833

  • SHA256

    3ac7f91e37572c0d15de4de96ab4719531c30536409fda4acb3e0071ab726338

  • SHA512

    61e6cc3e94ddb7a980bfb0a2e5e5ffeeb5414c9e2ef3e42551820017dbedab5cccdd8ece1fed2ca057e240bdb7836663a7f9be28f1bb9136da972750caf59704

  • SSDEEP

    12288:s8TC7FeAA9IsQwycG888888888888W88888888888E7xCYsdG:s8TygVinw1Z7xCZdG

Score
10/10
cerberdiscoveryevasionpersistenceprivilege_escalationransomware

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Microsoft\OneNote\16.0\cache\_R_E_A_D___T_H_I_S___JFBRHIA_.txt

Family

cerber

Ransom Note
Hi, I'am CRBR ENCRYPTOR ;) ----- YOUR DOCUMENTS, PHOTOS, DATABASES AND OTHER IMPORTANT FILES HAVE BEEN ENCRYPTED! ----- The only 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/04DB-0DF2-E0EF-0098-9677 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.19kxwa.top/04DB-0DF2-E0EF-0098-9677 2. http://xpcx6erilkjced3j.1eht65.top/04DB-0DF2-E0EF-0098-9677 3. http://xpcx6erilkjced3j.1t2jhk.top/04DB-0DF2-E0EF-0098-9677 4. http://xpcx6erilkjced3j.1e6ly3.top/04DB-0DF2-E0EF-0098-9677 5. http://xpcx6erilkjced3j.16umxg.top/04DB-0DF2-E0EF-0098-9677 ----- Note! These are temporary addresses! They will be available for a limited amount of time! -----
URLs

http://xpcx6erilkjced3j.onion/04DB-0DF2-E0EF-0098-9677

http://xpcx6erilkjced3j.19kxwa.top/04DB-0DF2-E0EF-0098-9677

http://xpcx6erilkjced3j.1eht65.top/04DB-0DF2-E0EF-0098-9677

http://xpcx6erilkjced3j.1t2jhk.top/04DB-0DF2-E0EF-0098-9677

http://xpcx6erilkjced3j.1e6ly3.top/04DB-0DF2-E0EF-0098-9677

http://xpcx6erilkjced3j.16umxg.top/04DB-0DF2-E0EF-0098-9677

Signatures

  • Cerber

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

    ransomwarecerber
  • Contacts a large (1107) 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).

  • 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.

    persistenceprivilege_escalation
  • 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.

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

    Adversaries may check for Internet connectivity on compromised systems.

    discovery
  • 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\3ac7f91e37572c0d15de4de96ab4719531c30536409fda4acb3e0071ab726338.exe
    "C:\Users\Admin\AppData\Local\Temp\3ac7f91e37572c0d15de4de96ab4719531c30536409fda4acb3e0071ab726338.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
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2444
    • 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:2664
    • 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:1084
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___10RVQWZ9_.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
      2⤵
      • System Location Discovery: System Language Discovery
      PID:532
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___4IGAF_.txt
      2⤵
      • System Location Discovery: System Language Discovery
      • Opens file in notepad (likely ransom note)
      PID:4328
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /d /c taskkill /f /im "3ac7f91e37572c0d15de4de96ab4719531c30536409fda4acb3e0071ab726338.exe" > NUL & ping -n 1 127.0.0.1 > NUL & del "C:\Users\Admin\AppData\Local\Temp\3ac7f91e37572c0d15de4de96ab4719531c30536409fda4acb3e0071ab726338.exe" > NUL && exit
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:3180
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im "3ac7f91e37572c0d15de4de96ab4719531c30536409fda4acb3e0071ab726338.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:4720
      • 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:3916
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4412,i,1602949858158667699,12464335823361976127,262144 --variations-seed-version --mojo-platform-channel-handle=4448 /prefetch:8
    1⤵
      PID:3724

    Network

    MITRE ATT&CK Enterprise v15

    Reconnaissance

    Resource Development

    Initial Access

    Execution

    Persistence

    Create or Modify System Process

    1
    T1543

    Windows Service

    1
    T1543.003

    Event Triggered Execution

    1
    T1546

    Netsh Helper DLL

    1
    T1546.007

    Privilege Escalation

    Create or Modify System Process

    1
    T1543

    Windows Service

    1
    T1543.003

    Event Triggered Execution

    1
    T1546

    Netsh Helper DLL

    1
    T1546.007

    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

    Peripheral Device Discovery

    1
    T1120

    Query Registry

    2
    T1012

    Remote System Discovery

    1
    T1018

    System Information Discovery

    3
    T1082

    System Location Discovery

    1
    T1614

    System Language Discovery

    1
    T1614.001

    System Network Configuration Discovery

    1
    T1016

    Internet Connection Discovery

    1
    T1016.001

    Lateral Movement

    Collection

    Command and Control

    Exfiltration

    Impact

    Defacement

    1
    T1491

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\OneNote\16.0\cache\_R_E_A_D___T_H_I_S___JFBRHIA_.txt
      Filesize

      1KB

      MD5

      0f4c0861bf2310a623148036ebfe6417

      SHA1

      5c719a01fb4dd5aa7457edfde25044b86c025d86

      SHA256

      50d19e8e5244ca4744b863c38f05f1491e42fd4de915bed22195412b644918b0

      SHA512

      22d93acb4cfd4970c1e9d5b5d6335996c3a0cab331d7458754c2527065ee1419a50a000aa4f96768930a4b7e9552a514ad635ef9143e78af0f72344a584dd24f

      Download Submit

    • C:\Users\Admin\AppData\Roaming\Microsoft\OneNote\16.0\_R_E_A_D___T_H_I_S___EJ6LWVA_.hta
      Filesize

      76KB

      MD5

      588df6e8103b7986b418a692f04ab99b

      SHA1

      0ae8f03e50275d8dc0f59969c2a17f15be1beb9e

      SHA256

      d9c068b541e63d131568e88f7ca20cdf23776eb1221fb435b6bbad36ff86b026

      SHA512

      11b07ffa533721014b0485eab67534f4826ee58dc65566f8d2d4bc0b87f18664130e1d59bb72d610271180fdf3ab0a1bf0be10f72903bd724f6cff9264c9e0b7

      Download Submit

    • memory/2444-0-0x00000000014D0000-0x0000000001502000-memory.dmp

      Filesize

      200KB

      Download

    • memory/2444-1-0x0000000000400000-0x0000000000436000-memory.dmp

      Filesize

      216KB

      Download

    • memory/2444-2-0x0000000000400000-0x0000000000436000-memory.dmp

      Filesize

      216KB

      Download

    • memory/2444-3-0x0000000000400000-0x0000000000436000-memory.dmp

      Filesize

      216KB

      Download

    • memory/2444-7-0x0000000000400000-0x0000000000436000-memory.dmp

      Filesize

      216KB

      Download

    • memory/2444-422-0x0000000000400000-0x0000000000436000-memory.dmp

      Filesize

      216KB

      Download

    • memory/2444-416-0x0000000000400000-0x0000000000436000-memory.dmp

      Filesize

      216KB

      Download

    • memory/2444-442-0x0000000000400000-0x0000000000436000-memory.dmp

      Filesize

      216KB

      Download