Analysis

  • max time kernel
    133s
  • max time network
    102s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-06-2024 11:40

General

  • Target

    MAJES-2020-185 SPEED MEASURING UNIT.exe

  • Size

    1.1MB

  • MD5

    048337b4fd894eb96343c3d76fce75c5

  • SHA1

    70b2a489f79e4df38d25aebb3d5478b2c29e9afa

  • SHA256

    37d021e4b73ef9c46d7e3252ddfa4e793675f15118a4f2476da6e9dffe7055ef

  • SHA512

    f84cf4dbf0afb966f852f9606635caac2dda2ca1e980df6b42d61cdd6b612f62d0069c65f2d17abea551fb1288bea59cf97c9e140b072c42752f2887cbc5f490

  • SSDEEP

    24576:OB+I7M+qnlzvXrSIoVp1AbxnPIGSbiojZbmdaA:OBt7M+qtiMnPNojZbmd

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Gentle31

Signatures

  • AgentTesla

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

  • AgentTesla payload 1 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • 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
  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 5 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\MAJES-2020-185 SPEED MEASURING UNIT.exe
    "C:\Users\Admin\AppData\Local\Temp\MAJES-2020-185 SPEED MEASURING UNIT.exe"
    1⤵
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Checks computer location settings
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1660
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QwWYJconqIwjAU" /XML "C:\Users\Admin\AppData\Local\Temp\tmp44C4.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2772
    • C:\Users\Admin\AppData\Local\Temp\MAJES-2020-185 SPEED MEASURING UNIT.exe
      "C:\Users\Admin\AppData\Local\Temp\MAJES-2020-185 SPEED MEASURING UNIT.exe"
      2⤵
        PID:3860
      • C:\Users\Admin\AppData\Local\Temp\MAJES-2020-185 SPEED MEASURING UNIT.exe
        "C:\Users\Admin\AppData\Local\Temp\MAJES-2020-185 SPEED MEASURING UNIT.exe"
        2⤵
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:2488

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\MAJES-2020-185 SPEED MEASURING UNIT.exe.log

      Filesize

      1KB

      MD5

      5200da2e50f24d5d543c3f10674acdcb

      SHA1

      b574a3336839882d799c0a7f635ea238efb934ee

      SHA256

      d2d81c1c9d35bc66149beaa77029bee68664d8512fc1efe373180bab77d61026

      SHA512

      24722a7de3250a6027a411c8b79d0720554c4efd59553f54b94ab77dc21efbf3191e0912901db475f08a6e9c1855d9e9594504d80d27300097418f4384a9d9cb

    • C:\Users\Admin\AppData\Local\Temp\tmp44C4.tmp

      Filesize

      1KB

      MD5

      98380ade3667b70a7bd9c7262a896bb5

      SHA1

      1fba8ac06d9feac17e247c2c45619c89ded37055

      SHA256

      24a72f5a7a49d1de8045a8b9f0da423d45586b251006c668e733268c016dfc76

      SHA512

      901362efb201cf4ddeb0c82ba85c5b1815e9ec2293bb1c0dc66c7ff7d2a1b7248af393ced16bee8e25e82cc3a0084f5a6cba1ce9bcca9efd89b25b9682dfbc1c

    • memory/1660-12-0x0000000006850000-0x0000000006856000-memory.dmp

      Filesize

      24KB

    • memory/1660-9-0x000000007440E000-0x000000007440F000-memory.dmp

      Filesize

      4KB

    • memory/1660-4-0x00000000058B0000-0x0000000005942000-memory.dmp

      Filesize

      584KB

    • memory/1660-5-0x0000000005830000-0x000000000583A000-memory.dmp

      Filesize

      40KB

    • memory/1660-6-0x0000000005950000-0x00000000059A6000-memory.dmp

      Filesize

      344KB

    • memory/1660-7-0x0000000074400000-0x0000000074BB0000-memory.dmp

      Filesize

      7.7MB

    • memory/1660-8-0x0000000005850000-0x0000000005868000-memory.dmp

      Filesize

      96KB

    • memory/1660-24-0x0000000074400000-0x0000000074BB0000-memory.dmp

      Filesize

      7.7MB

    • memory/1660-10-0x0000000074400000-0x0000000074BB0000-memory.dmp

      Filesize

      7.7MB

    • memory/1660-11-0x00000000067F0000-0x000000000683E000-memory.dmp

      Filesize

      312KB

    • memory/1660-0-0x000000007440E000-0x000000007440F000-memory.dmp

      Filesize

      4KB

    • memory/1660-3-0x0000000005DC0000-0x0000000006364000-memory.dmp

      Filesize

      5.6MB

    • memory/1660-13-0x0000000006860000-0x000000000689A000-memory.dmp

      Filesize

      232KB

    • memory/1660-2-0x0000000005710000-0x00000000057AC000-memory.dmp

      Filesize

      624KB

    • memory/1660-14-0x00000000014A0000-0x0000000001506000-memory.dmp

      Filesize

      408KB

    • memory/1660-1-0x0000000000C80000-0x0000000000D9A000-memory.dmp

      Filesize

      1.1MB

    • memory/2488-28-0x0000000074400000-0x0000000074BB0000-memory.dmp

      Filesize

      7.7MB

    • memory/2488-23-0x0000000074400000-0x0000000074BB0000-memory.dmp

      Filesize

      7.7MB

    • memory/2488-25-0x0000000074400000-0x0000000074BB0000-memory.dmp

      Filesize

      7.7MB

    • memory/2488-26-0x00000000059F0000-0x0000000005A08000-memory.dmp

      Filesize

      96KB

    • memory/2488-27-0x00000000069A0000-0x00000000069F0000-memory.dmp

      Filesize

      320KB

    • memory/2488-20-0x0000000000400000-0x0000000000436000-memory.dmp

      Filesize

      216KB

    • memory/2488-29-0x0000000074400000-0x0000000074BB0000-memory.dmp

      Filesize

      7.7MB

    • memory/2488-30-0x0000000074400000-0x0000000074BB0000-memory.dmp

      Filesize

      7.7MB