Analysis

  • max time kernel
    124s
  • max time network
    153s
  • platform
    windows10_x64
  • resource
    win10-ja-20210920
  • submitted
    22-10-2021 01:13

General

  • Target

    支払い命令.exe

  • Size

    413KB

  • MD5

    7405648b8ba8b4c48445a7f55a61d459

  • SHA1

    d77898b941ce97d62d6fd23b06256128ef453c33

  • SHA256

    8f93b80f846e37ffc99f893ccf4b7a513af333cb5b9adfecc6386a5c17b470a7

  • SHA512

    a58b95da177c3647692e85cc422d4057db730e73e1a3e4fb82a0ef387f4cc506e341e2c6a3ad8621f50fbef4fe80a6f751226000a4506725975d9e648f73a671

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.gmail.com
  • Port:
    587
  • Username:
    aalahajirazak.ibrahim@gmail.com
  • Password:
    sontcehkwhxjwuqj

Signatures

  • AgentTesla

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

  • Registers COM server for autorun 1 TTPs
  • AgentTesla Payload 3 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.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Modifies registry class 44 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\支払い命令.exe
    "C:\Users\Admin\AppData\Local\Temp\支払い命令.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3144
    • C:\Users\Admin\AppData\Local\Temp\支払い命令.exe
      "C:\Users\Admin\AppData\Local\Temp\支払い命令.exe"
      2⤵
        PID:688
      • C:\Users\Admin\AppData\Local\Temp\支払い命令.exe
        "C:\Users\Admin\AppData\Local\Temp\支払い命令.exe"
        2⤵
          PID:1008
        • C:\Users\Admin\AppData\Local\Temp\支払い命令.exe
          "C:\Users\Admin\AppData\Local\Temp\支払い命令.exe"
          2⤵
          • Accesses Microsoft Outlook profiles
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • outlook_office_path
          • outlook_win_path
          PID:928
      • C:\Users\Admin\AppData\Local\Microsoft\OneDrive\21.196.0921.0007\FileSyncConfig.exe
        "C:\Users\Admin\AppData\Local\Microsoft\OneDrive\21.196.0921.0007\FileSyncConfig.exe"
        1⤵
        • Modifies registry class
        PID:4484

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Persistence

      Registry Run Keys / Startup Folder

      1
      T1060

      Credential Access

      Credentials in Files

      3
      T1081

      Collection

      Data from Local System

      3
      T1005

      Email Collection

      1
      T1114

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\支払い命令.exe.log
        MD5

        0c2899d7c6746f42d5bbe088c777f94c

        SHA1

        622f66c5f7a3c91b28a9f43ce7c6cabadbf514f1

        SHA256

        5b0b99740cadaeff7b9891136644b396941547e20cc7eea646560d0dad5a5458

        SHA512

        ab7a3409ed4b6ca00358330a3aa4ef6de7d81eb21a5e24bb629ef6a7c7c4e2a70ca3accfbc989ed6e495fdb8eb6203a26d6f2a37b2a5809af4276af375b49078

      • memory/928-132-0x00000000057D0000-0x00000000057D1000-memory.dmp
        Filesize

        4KB

      • memory/928-131-0x0000000005330000-0x000000000582E000-memory.dmp
        Filesize

        5.0MB

      • memory/928-138-0x0000000005330000-0x000000000582E000-memory.dmp
        Filesize

        5.0MB

      • memory/928-135-0x00000000052C0000-0x00000000052C1000-memory.dmp
        Filesize

        4KB

      • memory/928-125-0x00000000004375EE-mapping.dmp
      • memory/928-134-0x0000000006360000-0x0000000006361000-memory.dmp
        Filesize

        4KB

      • memory/928-133-0x0000000006030000-0x0000000006031000-memory.dmp
        Filesize

        4KB

      • memory/928-124-0x0000000000400000-0x000000000043C000-memory.dmp
        Filesize

        240KB

      • memory/3144-121-0x0000000004EA0000-0x0000000004EA5000-memory.dmp
        Filesize

        20KB

      • memory/3144-117-0x00000000050C0000-0x00000000050C1000-memory.dmp
        Filesize

        4KB

      • memory/3144-123-0x00000000068A0000-0x00000000068F8000-memory.dmp
        Filesize

        352KB

      • memory/3144-115-0x0000000000260000-0x0000000000261000-memory.dmp
        Filesize

        4KB

      • memory/3144-118-0x0000000004BC0000-0x0000000004BC1000-memory.dmp
        Filesize

        4KB

      • memory/3144-122-0x0000000006F20000-0x0000000006F21000-memory.dmp
        Filesize

        4KB

      • memory/3144-120-0x0000000004C60000-0x0000000004C61000-memory.dmp
        Filesize

        4KB

      • memory/3144-119-0x0000000004BC0000-0x00000000050BE000-memory.dmp
        Filesize

        5.0MB