Analysis

  • max time kernel
    200s
  • max time network
    42s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    13-10-2023 13:07

General

  • Target

    Purchase Order_13102023.exe

  • Size

    523KB

  • MD5

    b5a70147c823327681c942174403ee66

  • SHA1

    855905c7cdffd746a9ce9866bb50a92afd3e79b8

  • SHA256

    b9acce3baff6363cf5ccfa55dbad67650905b856985de50829e65fa8a4be3d9c

  • SHA512

    c8c49aa51326a513aa3d19fefea33987840c845f800d1ac575414b36b93bd9f8beb5f8110fefbf2c0e6b4527d0342b68fc47de883d68050b0d58c6c393bacabb

  • SSDEEP

    12288:HhsDwXRze8VYS94Goso7GerOpDfN4jQk8l7fdict:6gzexS9aOf0Y7Vict

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Purchase Order_13102023.exe
    "C:\Users\Admin\AppData\Local\Temp\Purchase Order_13102023.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2788
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\BNrDYUo" /XML "C:\Users\Admin\AppData\Local\Temp\tmp18AF.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2468
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "{path}"
      2⤵
        PID:2896
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
        "{path}"
        2⤵
        • Accesses Microsoft Outlook profiles
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:2904

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Execution

    Scheduled Task/Job

    1
    T1053

    Persistence

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Scheduled Task/Job

    1
    T1053

    Privilege Escalation

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Scheduled Task/Job

    1
    T1053

    Defense Evasion

    Modify Registry

    1
    T1112

    Discovery

    System Information Discovery

    1
    T1082

    Collection

    Email Collection

    1
    T1114

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp18AF.tmp
      Filesize

      1KB

      MD5

      e84abf6edc0c85a938d3e724c2fd3250

      SHA1

      f2d85850d5903d199d84c2d88babbdb9a8a50fbf

      SHA256

      189936d6d669acfd205f3b1d4b6f5b1e6bdde591d5f50396cdb203be59b289b7

      SHA512

      27e60e0a2270fcf6a752f95ce1e55c7e94c253b6387555e685c4448d809e5f43f95bc0a4fc6570b1d1e46c792ef61b3abd23d5984a3ce20c24f1c2a9ffc4b8f4

    • memory/2788-0-0x00000000746B0000-0x0000000074D9E000-memory.dmp
      Filesize

      6.9MB

    • memory/2788-1-0x0000000001000000-0x0000000001088000-memory.dmp
      Filesize

      544KB

    • memory/2788-2-0x0000000004E20000-0x0000000004E60000-memory.dmp
      Filesize

      256KB

    • memory/2788-3-0x0000000000570000-0x000000000057C000-memory.dmp
      Filesize

      48KB

    • memory/2788-4-0x00000000746B0000-0x0000000074D9E000-memory.dmp
      Filesize

      6.9MB

    • memory/2788-5-0x0000000004E20000-0x0000000004E60000-memory.dmp
      Filesize

      256KB

    • memory/2788-6-0x0000000004760000-0x00000000047DC000-memory.dmp
      Filesize

      496KB

    • memory/2788-7-0x0000000000A50000-0x0000000000A92000-memory.dmp
      Filesize

      264KB

    • memory/2788-28-0x00000000746B0000-0x0000000074D9E000-memory.dmp
      Filesize

      6.9MB

    • memory/2904-13-0x0000000000400000-0x0000000000442000-memory.dmp
      Filesize

      264KB

    • memory/2904-15-0x0000000000400000-0x0000000000442000-memory.dmp
      Filesize

      264KB

    • memory/2904-17-0x0000000000400000-0x0000000000442000-memory.dmp
      Filesize

      264KB

    • memory/2904-19-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
      Filesize

      4KB

    • memory/2904-21-0x0000000000400000-0x0000000000442000-memory.dmp
      Filesize

      264KB

    • memory/2904-23-0x0000000000400000-0x0000000000442000-memory.dmp
      Filesize

      264KB

    • memory/2904-25-0x0000000000400000-0x0000000000442000-memory.dmp
      Filesize

      264KB

    • memory/2904-26-0x00000000746B0000-0x0000000074D9E000-memory.dmp
      Filesize

      6.9MB

    • memory/2904-11-0x0000000000400000-0x0000000000442000-memory.dmp
      Filesize

      264KB

    • memory/2904-27-0x00000000047E0000-0x0000000004820000-memory.dmp
      Filesize

      256KB

    • memory/2904-30-0x00000000746B0000-0x0000000074D9E000-memory.dmp
      Filesize

      6.9MB

    • memory/2904-31-0x00000000047E0000-0x0000000004820000-memory.dmp
      Filesize

      256KB