Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-11-2022 07:55

General

  • Target

    5964fe05c76da4380ea84102bbf4bc452d53d1d96d0271db6d6da10f5bada50a.exe

  • Size

    276KB

  • MD5

    11a45e6b934ecf974d16132b31b91352

  • SHA1

    f0872cafa94a5b4108653590fbf20b2a1fce3e67

  • SHA256

    5964fe05c76da4380ea84102bbf4bc452d53d1d96d0271db6d6da10f5bada50a

  • SHA512

    d9e583d074c9fa9e08fd27f8e6f5083162aedceeff895b1a7d24bdb0a82ffa06b40dd2c575c1d292bad81554839e0412d7d41a22a00fc2be5341d1291eaec05d

  • SSDEEP

    6144:Xk4qmSVmHu1YwXLwTxgDhsmWbC+uu54mTRoC2FwbRKbzJk:098kYcwTe9i94sR8wbRgz

Malware Config

Extracted

Family

cybergate

Version

2.6

Botnet

Victime

C2

127.0.0.1:81

Mutex

***MUTEX***

Attributes
  • enable_keylogger

    true

  • enable_message_box

    true

  • ftp_directory

    ./logs/

  • ftp_interval

    30

  • injected_process

    explorer.exe

  • install_dir

    avg antivirus

  • install_file

    avg.exe

  • install_flag

    true

  • keylogger_enable_ftp

    false

  • message_box_caption

    Failed

  • message_box_title

    Error

  • password

    djpostka1

  • regkey_hkcu

    HKCU

  • regkey_hklm

    HKLM

Signatures

  • CyberGate, Rebhip

    CyberGate is a lightweight remote administration tool with a wide array of functionalities.

  • Adds policy Run key to start application 2 TTPs 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Modifies Installed Components in the registry 2 TTPs 4 IoCs
  • UPX packed file 14 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 TTPs 4 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Program crash 1 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:512
      • C:\Users\Admin\AppData\Local\Temp\5964fe05c76da4380ea84102bbf4bc452d53d1d96d0271db6d6da10f5bada50a.exe
        "C:\Users\Admin\AppData\Local\Temp\5964fe05c76da4380ea84102bbf4bc452d53d1d96d0271db6d6da10f5bada50a.exe"
        2⤵
        • Adds policy Run key to start application
        • Modifies Installed Components in the registry
        • Adds Run key to start application
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of WriteProcessMemory
        PID:3448
        • C:\Windows\SysWOW64\explorer.exe
          explorer.exe
          3⤵
          • Modifies Installed Components in the registry
          PID:1556
        • C:\Program Files\Internet Explorer\iexplore.exe
          "C:\Program Files\Internet Explorer\iexplore.exe"
          3⤵
            PID:3468
          • C:\Users\Admin\AppData\Local\Temp\5964fe05c76da4380ea84102bbf4bc452d53d1d96d0271db6d6da10f5bada50a.exe
            "C:\Users\Admin\AppData\Local\Temp\5964fe05c76da4380ea84102bbf4bc452d53d1d96d0271db6d6da10f5bada50a.exe"
            3⤵
            • Checks computer location settings
            • Drops file in Program Files directory
            • Modifies registry class
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of AdjustPrivilegeToken
            PID:1120
            • C:\Program Files (x86)\avg antivirus\avg.exe
              "C:\Program Files (x86)\avg antivirus\avg.exe"
              4⤵
              • Executes dropped EXE
              PID:1004
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 1004 -s 572
                5⤵
                • Program crash
                PID:4296
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 1004 -ip 1004
        1⤵
          PID:4252

        Network

        MITRE ATT&CK Matrix ATT&CK v6

        Persistence

        Registry Run Keys / Startup Folder

        3
        T1060

        Defense Evasion

        Modify Registry

        3
        T1112

        Discovery

        Query Registry

        1
        T1012

        System Information Discovery

        2
        T1082

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Program Files (x86)\avg antivirus\avg.exe
          Filesize

          276KB

          MD5

          11a45e6b934ecf974d16132b31b91352

          SHA1

          f0872cafa94a5b4108653590fbf20b2a1fce3e67

          SHA256

          5964fe05c76da4380ea84102bbf4bc452d53d1d96d0271db6d6da10f5bada50a

          SHA512

          d9e583d074c9fa9e08fd27f8e6f5083162aedceeff895b1a7d24bdb0a82ffa06b40dd2c575c1d292bad81554839e0412d7d41a22a00fc2be5341d1291eaec05d

        • C:\Program Files (x86)\avg antivirus\avg.exe
          Filesize

          276KB

          MD5

          11a45e6b934ecf974d16132b31b91352

          SHA1

          f0872cafa94a5b4108653590fbf20b2a1fce3e67

          SHA256

          5964fe05c76da4380ea84102bbf4bc452d53d1d96d0271db6d6da10f5bada50a

          SHA512

          d9e583d074c9fa9e08fd27f8e6f5083162aedceeff895b1a7d24bdb0a82ffa06b40dd2c575c1d292bad81554839e0412d7d41a22a00fc2be5341d1291eaec05d

        • C:\Users\Admin\AppData\Local\Temp\XX--XX--XX.txt
          Filesize

          229KB

          MD5

          e6adf38a6932413bd0f53058bdd5c967

          SHA1

          8e0fb01dd22db8c473d6087b7b57e6efd32f49b0

          SHA256

          8b5debcf03372e69f57e527d9aecfdb358738b4d39561a947a65265b8b923086

          SHA512

          6de6a48d2f2d8d269d7f91a8f92dc58cca82b09d8bc64654d4000658cbbe8fa2df8d096a8338a9fc9b5d9ad8509ab3c6e737fa7991d1bce38e36667ca2b06bf5

        • memory/1004-161-0x0000000000400000-0x0000000000457000-memory.dmp
          Filesize

          348KB

        • memory/1004-159-0x0000000000000000-mapping.dmp
        • memory/1120-157-0x0000000000400000-0x0000000000457000-memory.dmp
          Filesize

          348KB

        • memory/1120-151-0x0000000000000000-mapping.dmp
        • memory/1120-158-0x0000000024160000-0x00000000241C2000-memory.dmp
          Filesize

          392KB

        • memory/1120-155-0x0000000024160000-0x00000000241C2000-memory.dmp
          Filesize

          392KB

        • memory/1556-138-0x0000000000000000-mapping.dmp
        • memory/1556-142-0x0000000024080000-0x00000000240E2000-memory.dmp
          Filesize

          392KB

        • memory/1556-145-0x0000000024080000-0x00000000240E2000-memory.dmp
          Filesize

          392KB

        • memory/3448-147-0x00000000240F0000-0x0000000024152000-memory.dmp
          Filesize

          392KB

        • memory/3448-156-0x0000000000400000-0x0000000000457000-memory.dmp
          Filesize

          348KB

        • memory/3448-152-0x0000000024160000-0x00000000241C2000-memory.dmp
          Filesize

          392KB

        • memory/3448-132-0x0000000000400000-0x0000000000457000-memory.dmp
          Filesize

          348KB

        • memory/3448-139-0x0000000024080000-0x00000000240E2000-memory.dmp
          Filesize

          392KB

        • memory/3448-134-0x0000000024010000-0x0000000024072000-memory.dmp
          Filesize

          392KB