Resubmissions

21-10-2021 09:41

211021-lntfvsahfn 10

14-11-2020 18:23

201114-kdmqjxwkme 10

Analysis

  • max time kernel
    1200s
  • max time network
    1213s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    21-10-2021 09:41

General

  • Target

    80e3a54e37f5e83b8bdab98b2ca765baaecb72c303fe44bc85ab85e7ece76764.exe

  • Size

    273KB

  • MD5

    54cd7479c93e54ce8c9784b8b1a0392b

  • SHA1

    c3e15e023c4ae835789b82befbe328ae137417ea

  • SHA256

    80e3a54e37f5e83b8bdab98b2ca765baaecb72c303fe44bc85ab85e7ece76764

  • SHA512

    cea67d7c1094b107a83c607196d9d4d16e0d7d6b7e5cdaa81d83e52422a9194203680d65b44c106c46a8e47dc6251fe292930e9fcc8b757b7d5242383286afbb

Malware Config

Extracted

Family

gozi_ifsb

Botnet

10003

C2

127.0.0.1

Attributes
  • build

    214711

  • dga_base_url

    z1.zedo.com/robots.txt

  • dga_crc

    0xf24ca29e

  • exe_type

    worker

  • server_id

    12

rsa_pubkey.plain
serpent.plain

Signatures

  • Gozi, Gozi IFSB

    Gozi ISFB is a well-known and widely distributed banking trojan.

  • Executes dropped EXE 1 IoCs
  • UPX packed file 2 IoCs

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

  • Deletes itself 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Windows\System32\RuntimeBroker.exe
    C:\Windows\System32\RuntimeBroker.exe -Embedding
    1⤵
      PID:3592
    • C:\Windows\Explorer.EXE
      C:\Windows\Explorer.EXE
      1⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2452
      • C:\Users\Admin\AppData\Local\Temp\80e3a54e37f5e83b8bdab98b2ca765baaecb72c303fe44bc85ab85e7ece76764.exe
        "C:\Users\Admin\AppData\Local\Temp\80e3a54e37f5e83b8bdab98b2ca765baaecb72c303fe44bc85ab85e7ece76764.exe"
        2⤵
        • Adds Run key to start application
        • Suspicious use of WriteProcessMemory
        PID:3572
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\B36E\D9B7.bat" "C:\Users\Admin\AppData\Roaming\capasnap\Bitshost.exe" "C:\Users\Admin\AppData\Local\Temp\80E3A5~1.EXE""
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:4332
          • C:\Windows\SysWOW64\cmd.exe
            cmd /C ""C:\Users\Admin\AppData\Roaming\capasnap\Bitshost.exe" "C:\Users\Admin\AppData\Local\Temp\80E3A5~1.EXE""
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:4448
            • C:\Users\Admin\AppData\Roaming\capasnap\Bitshost.exe
              "C:\Users\Admin\AppData\Roaming\capasnap\Bitshost.exe" "C:\Users\Admin\AppData\Local\Temp\80E3A5~1.EXE"
              5⤵
              • Executes dropped EXE
              • Deletes itself
              • Suspicious use of SetThreadContext
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious behavior: MapViewOfSection
              • Suspicious use of WriteProcessMemory
              PID:788
              • C:\Windows\system32\svchost.exe
                C:\Windows\system32\svchost.exe
                6⤵
                • Suspicious use of SetThreadContext
                • Suspicious behavior: MapViewOfSection
                • Suspicious use of WriteProcessMemory
                PID:4500

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Modify Registry

    1
    T1112

    Discovery

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\B36E\D9B7.bat
      MD5

      2198b3dc06e6e9e9678cd1450185c0ac

      SHA1

      8bce4fedb8fb6ff043319f674cd6c35ff3e22dc6

      SHA256

      90397ede065fdcb6d520ae922989a0f17b4dad9b9ad9ce64395f480c2abb16e6

      SHA512

      e12bab62f4bf7b819fb1ac3d0c11b8fba7c4992716aeb35ebc091cedec77ce93ae8d6540bc0ccc9478190d29707402697046b9c56222ef55efb71a86558a6e67

    • C:\Users\Admin\AppData\Roaming\capasnap\Bitshost.exe
      MD5

      54cd7479c93e54ce8c9784b8b1a0392b

      SHA1

      c3e15e023c4ae835789b82befbe328ae137417ea

      SHA256

      80e3a54e37f5e83b8bdab98b2ca765baaecb72c303fe44bc85ab85e7ece76764

      SHA512

      cea67d7c1094b107a83c607196d9d4d16e0d7d6b7e5cdaa81d83e52422a9194203680d65b44c106c46a8e47dc6251fe292930e9fcc8b757b7d5242383286afbb

    • C:\Users\Admin\AppData\Roaming\capasnap\Bitshost.exe
      MD5

      54cd7479c93e54ce8c9784b8b1a0392b

      SHA1

      c3e15e023c4ae835789b82befbe328ae137417ea

      SHA256

      80e3a54e37f5e83b8bdab98b2ca765baaecb72c303fe44bc85ab85e7ece76764

      SHA512

      cea67d7c1094b107a83c607196d9d4d16e0d7d6b7e5cdaa81d83e52422a9194203680d65b44c106c46a8e47dc6251fe292930e9fcc8b757b7d5242383286afbb

    • memory/788-120-0x0000000000000000-mapping.dmp
    • memory/788-123-0x0000000000400000-0x0000000000452000-memory.dmp
      Filesize

      328KB

    • memory/2452-127-0x0000000000A60000-0x0000000000A62000-memory.dmp
      Filesize

      8KB

    • memory/2452-132-0x0000000000A90000-0x0000000000B26000-memory.dmp
      Filesize

      600KB

    • memory/2452-128-0x0000000000A60000-0x0000000000A62000-memory.dmp
      Filesize

      8KB

    • memory/2452-131-0x0000000000A50000-0x0000000000A51000-memory.dmp
      Filesize

      4KB

    • memory/3572-116-0x0000000000400000-0x0000000000452000-memory.dmp
      Filesize

      328KB

    • memory/3572-115-0x00000000008F0000-0x000000000092C000-memory.dmp
      Filesize

      240KB

    • memory/3592-135-0x0000019A235B0000-0x0000019A235B1000-memory.dmp
      Filesize

      4KB

    • memory/3592-136-0x0000019A25890000-0x0000019A25926000-memory.dmp
      Filesize

      600KB

    • memory/3592-134-0x0000019A23750000-0x0000019A23752000-memory.dmp
      Filesize

      8KB

    • memory/3592-133-0x0000019A23750000-0x0000019A23752000-memory.dmp
      Filesize

      8KB

    • memory/4332-117-0x0000000000000000-mapping.dmp
    • memory/4448-119-0x0000000000000000-mapping.dmp
    • memory/4500-126-0x000002A424E50000-0x000002A424E52000-memory.dmp
      Filesize

      8KB

    • memory/4500-130-0x0000000000CE0000-0x0000000000D76000-memory.dmp
      Filesize

      600KB

    • memory/4500-129-0x0000000000D80000-0x0000000000D81000-memory.dmp
      Filesize

      4KB

    • memory/4500-125-0x000002A424E50000-0x000002A424E52000-memory.dmp
      Filesize

      8KB

    • memory/4500-124-0x0000000000000000-mapping.dmp