Analysis

  • max time kernel
    118s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20231023-en
  • resource tags

    arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
  • submitted
    03-12-2023 15:18

General

  • Target

    scancopy02892.xlam

  • Size

    723KB

  • MD5

    ef4287058ac7c3164e88aa66474a9218

  • SHA1

    aa3f637b3b8ba91de00d24f76e39aa68c64debe6

  • SHA256

    eba8f2d59efd39860b5cb8e49e8cd1a869b8bd2dc68ca584a80a48d1a4f3ea5b

  • SHA512

    da8bd1189c8ce7a9c0b908f0008550aa7636c6bc5b961882fcf39a6d4c88ebd20f059af83aed2e149125016b0e1da4b561cbbad23e840392b62541231d63a638

  • SSDEEP

    12288:IH0eV/6myhdvP/UubWUJ6PKs0G+2Q+MHx0bP/rv/jd4ltPtPJOp:IUeQmyhdXlCUJsl+m8x0b314l/xU

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • Blocklisted process makes network request 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Launches Equation Editor 1 TTPs 1 IoCs

    Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\scancopy02892.xlam
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    PID:2588
  • C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
    "C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
    1⤵
    • Blocklisted process makes network request
    • Loads dropped DLL
    • Launches Equation Editor
    • Suspicious use of WriteProcessMemory
    PID:2740
    • C:\Users\Admin\AppData\Roaming\zhyfe.exe
      C:\Users\Admin\AppData\Roaming\zhyfe.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:2724
      • C:\Users\Admin\AppData\Roaming\zhyfe.exe
        "C:\Users\Admin\AppData\Roaming\zhyfe.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2948

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\zhyfe.exe

    Filesize

    689KB

    MD5

    3c6b3c50afec4a49e616569559d4a749

    SHA1

    9f5844d3f48eee948e371d4f527b4459b3323f73

    SHA256

    18ff7446c538ea6c96f148a12b2a214f9823d7e4061c2f3d350cd81e6a8de8c5

    SHA512

    4f12fee3499145d457058690ab7c4ec280d7fea46eb5113dc3e970b3efc3f3e0637a6e227e6917672c62a6615fed016235c92b5b8135d1021660fa1b33055765

  • C:\Users\Admin\AppData\Roaming\zhyfe.exe

    Filesize

    689KB

    MD5

    3c6b3c50afec4a49e616569559d4a749

    SHA1

    9f5844d3f48eee948e371d4f527b4459b3323f73

    SHA256

    18ff7446c538ea6c96f148a12b2a214f9823d7e4061c2f3d350cd81e6a8de8c5

    SHA512

    4f12fee3499145d457058690ab7c4ec280d7fea46eb5113dc3e970b3efc3f3e0637a6e227e6917672c62a6615fed016235c92b5b8135d1021660fa1b33055765

  • C:\Users\Admin\AppData\Roaming\zhyfe.exe

    Filesize

    689KB

    MD5

    3c6b3c50afec4a49e616569559d4a749

    SHA1

    9f5844d3f48eee948e371d4f527b4459b3323f73

    SHA256

    18ff7446c538ea6c96f148a12b2a214f9823d7e4061c2f3d350cd81e6a8de8c5

    SHA512

    4f12fee3499145d457058690ab7c4ec280d7fea46eb5113dc3e970b3efc3f3e0637a6e227e6917672c62a6615fed016235c92b5b8135d1021660fa1b33055765

  • C:\Users\Admin\AppData\Roaming\zhyfe.exe

    Filesize

    689KB

    MD5

    3c6b3c50afec4a49e616569559d4a749

    SHA1

    9f5844d3f48eee948e371d4f527b4459b3323f73

    SHA256

    18ff7446c538ea6c96f148a12b2a214f9823d7e4061c2f3d350cd81e6a8de8c5

    SHA512

    4f12fee3499145d457058690ab7c4ec280d7fea46eb5113dc3e970b3efc3f3e0637a6e227e6917672c62a6615fed016235c92b5b8135d1021660fa1b33055765

  • \Users\Admin\AppData\Roaming\zhyfe.exe

    Filesize

    689KB

    MD5

    3c6b3c50afec4a49e616569559d4a749

    SHA1

    9f5844d3f48eee948e371d4f527b4459b3323f73

    SHA256

    18ff7446c538ea6c96f148a12b2a214f9823d7e4061c2f3d350cd81e6a8de8c5

    SHA512

    4f12fee3499145d457058690ab7c4ec280d7fea46eb5113dc3e970b3efc3f3e0637a6e227e6917672c62a6615fed016235c92b5b8135d1021660fa1b33055765

  • memory/2588-1-0x0000000071DDD000-0x0000000071DE8000-memory.dmp

    Filesize

    44KB

  • memory/2588-40-0x0000000071DDD000-0x0000000071DE8000-memory.dmp

    Filesize

    44KB

  • memory/2588-39-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/2588-33-0x0000000071DDD000-0x0000000071DE8000-memory.dmp

    Filesize

    44KB

  • memory/2588-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/2724-31-0x000000006BBA0000-0x000000006C28E000-memory.dmp

    Filesize

    6.9MB

  • memory/2724-15-0x0000000000480000-0x0000000000488000-memory.dmp

    Filesize

    32KB

  • memory/2724-17-0x0000000004F10000-0x0000000004F8A000-memory.dmp

    Filesize

    488KB

  • memory/2724-11-0x0000000000A20000-0x0000000000AD2000-memory.dmp

    Filesize

    712KB

  • memory/2724-12-0x000000006BBA0000-0x000000006C28E000-memory.dmp

    Filesize

    6.9MB

  • memory/2724-16-0x0000000000490000-0x000000000049A000-memory.dmp

    Filesize

    40KB

  • memory/2724-13-0x00000000042F0000-0x0000000004330000-memory.dmp

    Filesize

    256KB

  • memory/2724-14-0x0000000000460000-0x0000000000472000-memory.dmp

    Filesize

    72KB

  • memory/2948-19-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2948-26-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2948-29-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2948-24-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2948-32-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2948-22-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2948-35-0x00000000009E0000-0x0000000000A20000-memory.dmp

    Filesize

    256KB

  • memory/2948-34-0x000000006BBA0000-0x000000006C28E000-memory.dmp

    Filesize

    6.9MB

  • memory/2948-36-0x000000006BBA0000-0x000000006C28E000-memory.dmp

    Filesize

    6.9MB

  • memory/2948-37-0x00000000009E0000-0x0000000000A20000-memory.dmp

    Filesize

    256KB

  • memory/2948-20-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2948-18-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB