Overview

overview

10

Static

static

3

3ac7f91e37...38.exe

windows7-x64

10

3ac7f91e37...38.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    120s
  • max time network
    132s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-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\Desktop\_R_E_A_D___T_H_I_S___BXYK3J_.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/C4AB-B785-D9E6-0098-941D 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/C4AB-B785-D9E6-0098-941D 2. http://xpcx6erilkjced3j.1eht65.top/C4AB-B785-D9E6-0098-941D 3. http://xpcx6erilkjced3j.1t2jhk.top/C4AB-B785-D9E6-0098-941D 4. http://xpcx6erilkjced3j.1e6ly3.top/C4AB-B785-D9E6-0098-941D 5. http://xpcx6erilkjced3j.16umxg.top/C4AB-B785-D9E6-0098-941D ----- Note! These are temporary addresses! They will be available for a limited amount of time! -----
URLs

http://xpcx6erilkjced3j.onion/C4AB-B785-D9E6-0098-941D

http://xpcx6erilkjced3j.19kxwa.top/C4AB-B785-D9E6-0098-941D

http://xpcx6erilkjced3j.1eht65.top/C4AB-B785-D9E6-0098-941D

http://xpcx6erilkjced3j.1t2jhk.top/C4AB-B785-D9E6-0098-941D

http://xpcx6erilkjced3j.1e6ly3.top/C4AB-B785-D9E6-0098-941D

http://xpcx6erilkjced3j.16umxg.top/C4AB-B785-D9E6-0098-941D

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 (1095) 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
  • Deletes itself 1 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
    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 Internet Explorer settings 1 TTPs 1 IoCs
    adwarespyware
  • 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\3ac7f91e37572c0d15de4de96ab4719531c30536409fda4acb3e0071ab726338.exe
    "C:\Users\Admin\AppData\Local\Temp\3ac7f91e37572c0d15de4de96ab4719531c30536409fda4acb3e0071ab726338.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
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2208
    • 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:2768
    • 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:2220
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___0KHM1J_.hta"
      2⤵
      • Blocklisted process makes network request
      • System Location Discovery: System Language Discovery
      • Modifies Internet Explorer settings
      PID:2068
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___BXYK3J_.txt
      2⤵
      • System Location Discovery: System Language Discovery
      • Opens file in notepad (likely ransom note)
      PID:2560
    • 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⤵
      • Deletes itself
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:1296
      • 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:3024
      • 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:3064

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

2
T1112

Credential Access

Discovery

Network Service Discovery

1
T1046

Peripheral Device Discovery

1
T1120

Query Registry

1
T1012

Remote System Discovery

1
T1018

System Information Discovery

2
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\Temp\CabF549.tmp
    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

    Download Submit

  • C:\Users\Admin\AppData\Local\Temp\TarF56B.tmp
    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

    Download Submit

  • C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___0KHM1J_.hta
    Filesize

    76KB

    MD5

    c1cfbe105fe7aaa99ca9a39a40af044e

    SHA1

    6771809db4113ee8593532cbcfd39b78ee245afc

    SHA256

    8fc7286d8f3e4f04632f6cb2457a87ed4dc0d5b617c1f5aabdde87c5a65584af

    SHA512

    a6c641744de3020696042644c4c063320a27803b48379caf0a49c6df452049be0ebe2185f48598dfe8ca913223e178beea3d6045f5df8c922b45b6db18a53f40

    Download Submit

  • C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___BXYK3J_.txt
    Filesize

    1KB

    MD5

    eb4f8351b38c8fc53b3d72358099059a

    SHA1

    204e3a3f9294566a605b1fda9b1b1882bbce6ec3

    SHA256

    1daad56a56b437b3fa017c5a8fd0b37afb9c3bc4cfc6d8f7b402cc6d411be405

    SHA512

    5a8ae3324f4970b9230a6d29379ff5e331626dff859300a1cc416662fa32bc2f4a8fb1c3eac18258bce52ac8d0a27557dc486b8d85bfbbd2b8cf00df8a956e87

    Download Submit

  • memory/2208-1-0x0000000000400000-0x0000000000436000-memory.dmp

    Filesize

    216KB

    Download

  • memory/2208-0-0x0000000000300000-0x0000000000332000-memory.dmp

    Filesize

    200KB

    Download

  • memory/2208-2-0x0000000000400000-0x0000000000436000-memory.dmp

    Filesize

    216KB

    Download

  • memory/2208-5-0x0000000000400000-0x0000000000436000-memory.dmp

    Filesize

    216KB

    Download

  • memory/2208-77-0x0000000000400000-0x0000000000436000-memory.dmp

    Filesize

    216KB

    Download

  • memory/2208-74-0x0000000000400000-0x0000000000436000-memory.dmp

    Filesize

    216KB

    Download

  • memory/2208-93-0x0000000000400000-0x0000000000436000-memory.dmp

    Filesize

    216KB

    Download