Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    05-05-2024 10:29

General

  • Target

    5a0c5731e7e42a10e73d6aaa806f2b3118d582aecce644c71f5942499becaaba.exe

  • Size

    405KB

  • MD5

    f29cfeed8cae3423633b3979709d2727

  • SHA1

    a0904045884bd7d96c1f5b8ca529c3ee7441b821

  • SHA256

    5a0c5731e7e42a10e73d6aaa806f2b3118d582aecce644c71f5942499becaaba

  • SHA512

    690d6b6475f455e3b6337cf70b923d9990b0b7cd9007457d7df30f5e6b44beeb26fc7ba47e5dd4e34ad907d1ad9ecc32d61b39e90c7fcd4f453302ba87163638

  • SSDEEP

    6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4c:gtRfJcNYFNm8UhlZGsec

Malware Config

Signatures

  • Blocklisted process makes network request 10 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 6 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

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

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5a0c5731e7e42a10e73d6aaa806f2b3118d582aecce644c71f5942499becaaba.exe
    "C:\Users\Admin\AppData\Local\Temp\5a0c5731e7e42a10e73d6aaa806f2b3118d582aecce644c71f5942499becaaba.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2328
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\epdib.exe "C:\Users\Admin\AppData\Local\Temp\5a0c5731e7e42a10e73d6aaa806f2b3118d582aecce644c71f5942499becaaba.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:3040
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 2
        3⤵
        • Runs ping.exe
        PID:2500
      • C:\Users\Admin\AppData\Local\Temp\epdib.exe
        C:\Users\Admin\AppData\Local\Temp\\epdib.exe "C:\Users\Admin\AppData\Local\Temp\5a0c5731e7e42a10e73d6aaa806f2b3118d582aecce644c71f5942499becaaba.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • Drops file in Program Files directory
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2684
        • \??\c:\windows\SysWOW64\rundll32.exe
          c:\windows\system32\rundll32.exe "c:\Program Files\jcore\gexmi.dll",Verify C:\Users\Admin\AppData\Local\Temp\epdib.exe
          4⤵
          • Blocklisted process makes network request
          • Loads dropped DLL
          • Adds Run key to start application
          • Enumerates connected drives
          • Writes to the Master Boot Record (MBR)
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2524

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \??\c:\Program Files\jcore\gexmi.dll

    Filesize

    228KB

    MD5

    a416892b71332b1ef7593b851f627b4c

    SHA1

    f343c3afb361fa8005dd93eac1e94746cdb4486e

    SHA256

    cf45fa79748215ffa89b2da4d226b54ab07695531551e4a8f7ddae8349b3efb1

    SHA512

    c482bd365a2611efecccb615116103ffe7f89712c1c7ccededdc6c802b7b84d947c9512b943cf59d6273a4b8b966fadfa9920ff371920ca050dec4e1f344285b

  • \Users\Admin\AppData\Local\Temp\epdib.exe

    Filesize

    405KB

    MD5

    3a7147870efd9413e12e12e61f856bca

    SHA1

    6ab53497998a713272a5de492d605d9e8a4df18b

    SHA256

    e02d23c513abdae6c0d54a5fb36f6fd07fb998f93b55f59bb6fe33ecaa034d41

    SHA512

    2b21b53fe333a15014833b26eb59d2775ad241d3428e8aa125c8e19c12d8571bcaa32b2ae2d8546a488b56b460f072473738c7197d679b97fe753434371b006c

  • memory/2328-0-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/2328-2-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/2524-17-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

  • memory/2524-18-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

  • memory/2524-19-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

  • memory/2524-21-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

  • memory/2684-9-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/2684-11-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/3040-4-0x0000000000260000-0x00000000002C4000-memory.dmp

    Filesize

    400KB

  • memory/3040-8-0x0000000000260000-0x00000000002C4000-memory.dmp

    Filesize

    400KB