Overview

overview

10

Static

static

3

3ac7f91e37...38.exe

windows7-x64

10

3ac7f91e37...38.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    119s
  • max time network
    136s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    18-03-2024 13:43

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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
cerberdiscoveryevasionransomware

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___H3C638_.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/0AC3-703B-F7D8-0098-9721 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/0AC3-703B-F7D8-0098-9721 2. http://xpcx6erilkjced3j.1eht65.top/0AC3-703B-F7D8-0098-9721 3. http://xpcx6erilkjced3j.1t2jhk.top/0AC3-703B-F7D8-0098-9721 4. http://xpcx6erilkjced3j.1e6ly3.top/0AC3-703B-F7D8-0098-9721 5. http://xpcx6erilkjced3j.16umxg.top/0AC3-703B-F7D8-0098-9721 ----- Note! These are temporary addresses! They will be available for a limited amount of time! -----
URLs

http://xpcx6erilkjced3j.onion/0AC3-703B-F7D8-0098-9721

http://xpcx6erilkjced3j.19kxwa.top/0AC3-703B-F7D8-0098-9721

http://xpcx6erilkjced3j.1eht65.top/0AC3-703B-F7D8-0098-9721

http://xpcx6erilkjced3j.1t2jhk.top/0AC3-703B-F7D8-0098-9721

http://xpcx6erilkjced3j.1e6ly3.top/0AC3-703B-F7D8-0098-9721

http://xpcx6erilkjced3j.16umxg.top/0AC3-703B-F7D8-0098-9721

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
  • 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 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⤵
    • Enumerates connected drives
    • Drops file in System32 directory
    • Sets desktop wallpaper using registry
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2864
    • C:\Windows\SysWOW64\netsh.exe
      C:\Windows\system32\netsh.exe advfirewall set allprofiles state on
      2⤵
      • Modifies Windows Firewall
      PID:2308
    • C:\Windows\SysWOW64\netsh.exe
      C:\Windows\system32\netsh.exe advfirewall reset
      2⤵
      • Modifies Windows Firewall
      PID:1796
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___QC7ZQUQ8_.hta"
      2⤵
      • Blocklisted process makes network request
      • Modifies Internet Explorer settings
      PID:2544
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___H3C638_.txt
      2⤵
      • Opens file in notepad (likely ransom note)
      PID:2420
    • 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
      • Suspicious use of WriteProcessMemory
      PID:2292
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im "3ac7f91e37572c0d15de4de96ab4719531c30536409fda4acb3e0071ab726338.exe"
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:672
      • C:\Windows\SysWOW64\PING.EXE
        ping -n 1 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:1804

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
    Filesize

    67KB

    MD5

    753df6889fd7410a2e9fe333da83a429

    SHA1

    3c425f16e8267186061dd48ac1c77c122962456e

    SHA256

    b42dc237e44cbc9a43400e7d3f9cbd406dbdefd62bfe87328f8663897d69df78

    SHA512

    9d56f79410ad0cf852c74c3ef9454e7ae86e80bdd6ff67773994b48ccac71142bcf5c90635da6a056e1406e81e64674db9584928e867c55b77b59e2851cf6444

    Download Submit

  • C:\Users\Admin\AppData\Local\Temp\Tar7C39.tmp
    Filesize

    175KB

    MD5

    dd73cead4b93366cf3465c8cd32e2796

    SHA1

    74546226dfe9ceb8184651e920d1dbfb432b314e

    SHA256

    a6752b7851b591550e4625b832a393aabcc428de18d83e8593cd540f7d7cae22

    SHA512

    ce1bdd595065c94fa528badf4a6a8777893807d6789267612755df818ba6ffe55e4df429710aea29526ee4aa8ef20e25f2f05341da53992157d21ae032c0fb63

    Download Submit

  • C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___H3C638_.txt
    Filesize

    1KB

    MD5

    24c93fa25602d2ff2883860b7a8ed459

    SHA1

    b5fb310aa77334a847c3c28f4786b2c0052fcaaa

    SHA256

    6da264449146699b26d9922bc2e21ad705a46b59d3fa122ca404c94ddef5483d

    SHA512

    256baf58b849e78e802ca6c7de397baff1af3e28393e212e7c9b722de568680b9f889ecfc1a2a233a66f8d566a2cd16ba3a5e83fcf85c038a679cad3a0e49587

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  • C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___QC7ZQUQ8_.hta
    Filesize

    76KB

    MD5

    62a13ce268bbb6166321f1af38f3acbe

    SHA1

    b58188fdf72a2d8a63e6e035cff23a91e5659aa7

    SHA256

    1beeed0eab5b032a0bf468a1959443a3ab888adcaf41f453912ee3cf39d012ea

    SHA512

    b6efd5cd3fc99af01b0d2bb167f4a664309e89689cbb496744280b779b97ba3db254f26b64926525053ab2658373e6527e140eb9d071c3b2160879ece0dae53c

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  • memory/2864-0-0x0000000000120000-0x0000000000152000-memory.dmp

    Filesize

    200KB

    Download

  • memory/2864-1-0x0000000000400000-0x0000000000436000-memory.dmp

    Filesize

    216KB

    Download

  • memory/2864-2-0x0000000000400000-0x0000000000436000-memory.dmp

    Filesize

    216KB

    Download

  • memory/2864-5-0x0000000000400000-0x0000000000436000-memory.dmp

    Filesize

    216KB

    Download

  • memory/2864-93-0x0000000000400000-0x0000000000436000-memory.dmp

    Filesize

    216KB

    Download

  • memory/2864-136-0x0000000000400000-0x0000000000436000-memory.dmp

    Filesize

    216KB

    Download