Overview

overview

10

Static

static

1

b3e1e9d97d...7d.exe

windows7-x64

10

b3e1e9d97d...7d.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    117s
  • max time network
    140s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    02-03-2024 20:52

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General

  • Target

    b3e1e9d97d74c416c2a30dd11858789af5554cf2de62f577c13944a19623777d.exe

  • Size

    313KB

  • MD5

    fe1bc60a95b2c2d77cd5d232296a7fa4

  • SHA1

    c07dfdea8da2da5bad036e7c2f5d37582e1cf684

  • SHA256

    b3e1e9d97d74c416c2a30dd11858789af5554cf2de62f577c13944a19623777d

  • SHA512

    266c541a421878e1e175db5d94185c991cec5825a4bc50178f57264f3556080e6fe984ed0380acf022ce659aa1ca46c9a5e97efc25ff46cbfd67b9385fd75f89

  • SSDEEP

    6144:nl578cxdGY87FohbnmM2i8ito7wTmCbL94KCT3OAmK:nl59zH8MiM2z+NLQBN

Score
10/10
cerberdiscoveryevasionransomware

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___5NS5MYH_.txt

Family

cerber

Ransom Note
Hi, I'am CRBR ENCRYPTOR ;) ----- ALL YOUR DOCUMENTS, PH0T0S, DATABASES AND OTHER 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://xpcx6erilkjced3j.onion/E2D3-DF9B-FE4D-0098-BF8B 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.1n5mod.top/E2D3-DF9B-FE4D-0098-BF8B 2. http://xpcx6erilkjced3j.19kdeh.top/E2D3-DF9B-FE4D-0098-BF8B 3. http://xpcx6erilkjced3j.1mpsnr.top/E2D3-DF9B-FE4D-0098-BF8B 4. http://xpcx6erilkjced3j.18ey8e.top/E2D3-DF9B-FE4D-0098-BF8B 5. http://xpcx6erilkjced3j.17gcun.top/E2D3-DF9B-FE4D-0098-BF8B ----- Note! These are temporary addresses! They will be available for a limited amount of time! -----
URLs

http://xpcx6erilkjced3j.onion/E2D3-DF9B-FE4D-0098-BF8B

http://xpcx6erilkjced3j.1n5mod.top/E2D3-DF9B-FE4D-0098-BF8B

http://xpcx6erilkjced3j.19kdeh.top/E2D3-DF9B-FE4D-0098-BF8B

http://xpcx6erilkjced3j.1mpsnr.top/E2D3-DF9B-FE4D-0098-BF8B

http://xpcx6erilkjced3j.18ey8e.top/E2D3-DF9B-FE4D-0098-BF8B

http://xpcx6erilkjced3j.17gcun.top/E2D3-DF9B-FE4D-0098-BF8B

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 (1094) 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
  • 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
  • Modifies system certificate store 2 TTPs 3 IoCs
    evasionspywaretrojan
  • 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\b3e1e9d97d74c416c2a30dd11858789af5554cf2de62f577c13944a19623777d.exe
    "C:\Users\Admin\AppData\Local\Temp\b3e1e9d97d74c416c2a30dd11858789af5554cf2de62f577c13944a19623777d.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:2688
    • C:\Windows\SysWOW64\netsh.exe
      C:\Windows\system32\netsh.exe advfirewall set allprofiles state on
      2⤵
      • Modifies Windows Firewall
      PID:1740
    • C:\Windows\SysWOW64\netsh.exe
      C:\Windows\system32\netsh.exe advfirewall reset
      2⤵
      • Modifies Windows Firewall
      PID:2644
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___UNP6JJ_.hta"
      2⤵
      • Blocklisted process makes network request
      • Modifies Internet Explorer settings
      • Modifies system certificate store
      PID:1744
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___5NS5MYH_.txt
      2⤵
      • Opens file in notepad (likely ransom note)
      PID:1748
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /d /c taskkill /f /im "b" > NUL & ping -n 1 127.0.0.1 > NUL & del "C" > NUL && exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:884
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im "b"
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:3052
      • C:\Windows\SysWOW64\PING.EXE
        ping -n 1 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:1556

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\TarB0C0.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___5NS5MYH_.txt
    Filesize

    1KB

    MD5

    8c5b36102b02cf28401f3ec24ddd3b40

    SHA1

    53a36c7a290087cc2e8258889a3ee0ec8b5b76f4

    SHA256

    2adde3ecfc243f20409a4b55b5f48311fda6dca5505a25b8529cbd47a9271441

    SHA512

    82e0fd6d754ff94986bd9c5b6d3c424d668ddf9a71a24cb6aa0bb58c6acf3f0d9be9fa847e7a3f24f59d27c3f6e28b473454a367df672cdf5cc839e7506a260a

    Download Submit

  • C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___UNP6JJ_.hta
    Filesize

    76KB

    MD5

    de156fffb9fce3a7ab2028cbefea0cec

    SHA1

    5db96ecaf2f28b9cd202440aa1f891b6190e39db

    SHA256

    cc91a0870717feca7a88d2e66b5fa5e610730d060eea0d08c59376091167ecdd

    SHA512

    e8cd08c9c5c22b7deb76e4248939e515989cbe264aebd25d5d09f69a694f3ec2b3cfe3247611a87ae2584169985a9efb86b5db27c0cadc648e27bae48370ee6d

    Download Submit

  • memory/2688-0-0x0000000000130000-0x0000000000161000-memory.dmp

    Filesize

    196KB

    Download

  • memory/2688-1-0x0000000000400000-0x0000000000433000-memory.dmp

    Filesize

    204KB

    Download

  • memory/2688-2-0x0000000000400000-0x0000000000433000-memory.dmp

    Filesize

    204KB

    Download

  • memory/2688-5-0x0000000000400000-0x0000000000433000-memory.dmp

    Filesize

    204KB

    Download

  • memory/2688-16-0x0000000000400000-0x0000000000433000-memory.dmp

    Filesize

    204KB

    Download

  • memory/2688-97-0x0000000000400000-0x0000000000433000-memory.dmp

    Filesize

    204KB

    Download

  • memory/2688-129-0x0000000000400000-0x0000000000433000-memory.dmp

    Filesize

    204KB

    Download