General

  • Target

    Trojan-Ransom.Win32.Zerber.gdda-72d4375c5fe2533acb5e378ddbd3c55f87c61003a492caffdcb40db988c49503.exe

  • Size

    148KB

  • Sample

    220929-pt4essaha5

  • MD5

    6ed3e3327246cc457d22bb92bd3bba8b

  • SHA1

    1329a6af26f16bb371782ff404d526eec1af9d22

  • SHA256

    72d4375c5fe2533acb5e378ddbd3c55f87c61003a492caffdcb40db988c49503

  • SHA512

    f6c5428adffc10294204e0b068510d91fced02bbe02158a21294ebd5baf249aff0264021cbf7b2b9b37533b1db4daa09113abaa84435f4aa7660849f9b9257f7

Malware Config

Extracted

Path

\??\c:\_R_E_A_D___T_H_I_S___EY4TH_.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/26C4-70E9-FBB8-0098-BDBD 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/26C4-70E9-FBB8-0098-BDBD 2. http://xpcx6erilkjced3j.19kdeh.top/26C4-70E9-FBB8-0098-BDBD 3. http://xpcx6erilkjced3j.1mpsnr.top/26C4-70E9-FBB8-0098-BDBD 4. http://xpcx6erilkjced3j.18ey8e.top/26C4-70E9-FBB8-0098-BDBD 5. http://xpcx6erilkjced3j.17gcun.top/26C4-70E9-FBB8-0098-BDBD ----- Note! These are temporary addresses! They will be available for a limited amount of time! -----
URLs

http://xpcx6erilkjced3j.onion/26C4-70E9-FBB8-0098-BDBD

http://xpcx6erilkjced3j.1n5mod.top/26C4-70E9-FBB8-0098-BDBD

http://xpcx6erilkjced3j.19kdeh.top/26C4-70E9-FBB8-0098-BDBD

http://xpcx6erilkjced3j.1mpsnr.top/26C4-70E9-FBB8-0098-BDBD

http://xpcx6erilkjced3j.18ey8e.top/26C4-70E9-FBB8-0098-BDBD

http://xpcx6erilkjced3j.17gcun.top/26C4-70E9-FBB8-0098-BDBD

Targets

    • Target

      Trojan-Ransom.Win32.Zerber.gdda-72d4375c5fe2533acb5e378ddbd3c55f87c61003a492caffdcb40db988c49503.exe

    • Size

      148KB

    • MD5

      6ed3e3327246cc457d22bb92bd3bba8b

    • SHA1

      1329a6af26f16bb371782ff404d526eec1af9d22

    • SHA256

      72d4375c5fe2533acb5e378ddbd3c55f87c61003a492caffdcb40db988c49503

    • SHA512

      f6c5428adffc10294204e0b068510d91fced02bbe02158a21294ebd5baf249aff0264021cbf7b2b9b37533b1db4daa09113abaa84435f4aa7660849f9b9257f7

    • BadRabbit

      Ransomware family discovered in late 2017, mainly targeting Russia and Ukraine.

    • Cerber

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

    • Mimikatz

      mimikatz is an open source tool to dump credentials on Windows.

    • Modifies WinLogon for persistence

    • Wannacry

      WannaCry is a ransomware cryptoworm.

    • mimikatz is an open source tool to dump credentials on Windows

    • Disables RegEdit via registry modification

    • Disables Task Manager via registry modification

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Modifies extensions of user files

      Ransomware generally changes the extension on encrypted files.

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops startup file

    • Loads dropped DLL

    • Modifies file permissions

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Adds Run key to start application

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Legitimate hosting services abused for malware hosting/C2

    • Modifies WinLogon

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Drops file in System32 directory