Analysis

  • max time kernel
    158s
  • max time network
    170s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    01-02-2022 10:31

General

  • Target

    41e52cec2091e4451beadad93c5f693d5a008cf56eaf160f9fa4d577b1d707f6.exe

  • Size

    42KB

  • MD5

    82484125d69dd4821fc3b0996663b48c

  • SHA1

    167de7e747db000659b41308f5391789f64cabf9

  • SHA256

    41e52cec2091e4451beadad93c5f693d5a008cf56eaf160f9fa4d577b1d707f6

  • SHA512

    c43e7c01451bf618ffa92d9a6101e9e96c475b43bead92cd1076b836e8f77e5db45a8140c71708793c478ebecb3fb890c550ad2e4b7ed39e5e8e47a3a974f89c

Malware Config

Extracted

Family

gozi_rm3

Attributes
  • exe_type

    loader

Extracted

Family

gozi_rm3

Botnet

40000

C2

https://daycareforyou.xyz

Attributes
  • build

    300854

  • dga_base_url

    constitution.org/usdeclar.txt

  • dga_crc

    0x4eb7d2ca

  • dga_season

    10

  • dga_tlds

    com

    ru

    org

  • exe_type

    loader

  • server_id

    12

  • url_path

    index.htm

rsa_pubkey.plain
serpent.plain

Signatures

  • Gozi RM3

    A heavily modified version of Gozi using RM3 loader.

  • Sets service image path in registry 2 TTPs
  • Drops file in Windows directory 6 IoCs
  • Modifies Internet Explorer settings 1 TTPs 64 IoCs
  • Modifies data under HKEY_USERS 41 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of FindShellTrayWindow 6 IoCs
  • Suspicious use of SetWindowsHookEx 24 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\41e52cec2091e4451beadad93c5f693d5a008cf56eaf160f9fa4d577b1d707f6.exe
    "C:\Users\Admin\AppData\Local\Temp\41e52cec2091e4451beadad93c5f693d5a008cf56eaf160f9fa4d577b1d707f6.exe"
    1⤵
      PID:4420
    • C:\Program Files (x86)\Internet Explorer\ielowutil.exe
      "C:\Program Files (x86)\Internet Explorer\ielowutil.exe" -CLSID:{0002DF01-0000-0000-C000-000000000046} -Embedding
      1⤵
        PID:2332
      • C:\Program Files\Internet Explorer\iexplore.exe
        "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
        1⤵
        • Modifies Internet Explorer settings
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1500
        • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
          "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1500 CREDAT:17410 /prefetch:2
          2⤵
          • Modifies Internet Explorer settings
          • Suspicious use of SetWindowsHookEx
          PID:4192
        • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
          "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1500 CREDAT:82950 /prefetch:2
          2⤵
          • Modifies Internet Explorer settings
          • Suspicious use of SetWindowsHookEx
          PID:3896
      • C:\Windows\System32\WaaSMedicAgent.exe
        C:\Windows\System32\WaaSMedicAgent.exe 338caeb4108d10707caf73aacfab2dd9 z1Huw+7YcESh9XUvZuvv4Q.0.1.0.0.0
        1⤵
        • Modifies data under HKEY_USERS
        PID:4716
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
        1⤵
        • Drops file in Windows directory
        • Suspicious use of AdjustPrivilegeToken
        PID:3152
      • C:\Program Files\Internet Explorer\iexplore.exe
        "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
        1⤵
        • Modifies Internet Explorer settings
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:3424
        • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
          "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3424 CREDAT:17410 /prefetch:2
          2⤵
          • Modifies Internet Explorer settings
          • Suspicious use of SetWindowsHookEx
          PID:4868
      • C:\Program Files\Internet Explorer\iexplore.exe
        "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
        1⤵
        • Modifies Internet Explorer settings
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2164
        • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
          "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2164 CREDAT:17410 /prefetch:2
          2⤵
          • Modifies Internet Explorer settings
          • Suspicious use of SetWindowsHookEx
          PID:3172
      • C:\Program Files\Internet Explorer\iexplore.exe
        "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
        1⤵
        • Modifies Internet Explorer settings
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2300
        • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
          "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2300 CREDAT:17410 /prefetch:2
          2⤵
          • Modifies Internet Explorer settings
          • Suspicious use of SetWindowsHookEx
          PID:2552
      • C:\Program Files\Internet Explorer\iexplore.exe
        "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
        1⤵
        • Modifies Internet Explorer settings
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:3584
        • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
          "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3584 CREDAT:17410 /prefetch:2
          2⤵
          • Modifies Internet Explorer settings
          • Suspicious use of SetWindowsHookEx
          PID:4152

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • memory/3152-176-0x000001EE1C360000-0x000001EE1C370000-memory.dmp

        Filesize

        64KB

      • memory/3152-183-0x000001EE1F0E0000-0x000001EE1F0E4000-memory.dmp

        Filesize

        16KB

      • memory/4420-130-0x00000000001C0000-0x00000000001D1000-memory.dmp

        Filesize

        68KB