Analysis

  • max time kernel
    192s
  • max time network
    239s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-12-2022 14:43

General

  • Target

    d33be5280d3218290d388d56c8b24a8384850d562728bbbe6d8a738950f76b89.exe

  • Size

    368KB

  • MD5

    500dbda4403f8f91f0a893c6c57b441d

  • SHA1

    dd43960b19cd8810447f45f2e96a1557af36f9d4

  • SHA256

    d33be5280d3218290d388d56c8b24a8384850d562728bbbe6d8a738950f76b89

  • SHA512

    a76b7cfdf1283db03624b8c73e9aee8b0542e907a5400a0b5b0f4206e937d66a7be9427f36f0191a1ec307b9d22b4d46b4092ca15a0583d3cf322435f4460c23

  • SSDEEP

    1536:4doMDP3BnMPUC4wg0p2Z/jrF8wBKYfDHbifFGxsCdnrinleNn:4euPxnMPUHwpp2gBUqwxBNilYn

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

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

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d33be5280d3218290d388d56c8b24a8384850d562728bbbe6d8a738950f76b89.exe
    "C:\Users\Admin\AppData\Local\Temp\d33be5280d3218290d388d56c8b24a8384850d562728bbbe6d8a738950f76b89.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2232
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2040
    • C:\Users\Admin\AppData\Local\Temp\d33be5280d3218290d388d56c8b24a8384850d562728bbbe6d8a738950f76b89.exe
      C:\Users\Admin\AppData\Local\Temp\d33be5280d3218290d388d56c8b24a8384850d562728bbbe6d8a738950f76b89.exe
      2⤵
        PID:1364
      • C:\Users\Admin\AppData\Local\Temp\d33be5280d3218290d388d56c8b24a8384850d562728bbbe6d8a738950f76b89.exe
        C:\Users\Admin\AppData\Local\Temp\d33be5280d3218290d388d56c8b24a8384850d562728bbbe6d8a738950f76b89.exe
        2⤵
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: RenamesItself
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:2144

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\d33be5280d3218290d388d56c8b24a8384850d562728bbbe6d8a738950f76b89.exe.log

      Filesize

      1KB

      MD5

      e87e48b105757e1c7563d1c719059733

      SHA1

      28a3f2b2e0672da2b531f4757d2b20b53032dafc

      SHA256

      0aaf22dc84cc3fcfe53de7ccfed8e662247dfb7f1a9967032c88790d0c663461

      SHA512

      bf19c5743143aee914a453c41189c722c9b90a5b8bf299cecf3e1f97656d32cd209ecb74da8aebc89bb41c27d189f73aaaabbc64fe383410c95dc76ad4218968

    • memory/1364-142-0x0000000000000000-mapping.dmp

    • memory/2040-140-0x0000000007A20000-0x000000000809A000-memory.dmp

      Filesize

      6.5MB

    • memory/2040-141-0x00000000068F0000-0x000000000690A000-memory.dmp

      Filesize

      104KB

    • memory/2040-136-0x0000000005530000-0x0000000005B58000-memory.dmp

      Filesize

      6.2MB

    • memory/2040-137-0x0000000005C10000-0x0000000005C76000-memory.dmp

      Filesize

      408KB

    • memory/2040-138-0x0000000005D80000-0x0000000005DE6000-memory.dmp

      Filesize

      408KB

    • memory/2040-139-0x00000000063F0000-0x000000000640E000-memory.dmp

      Filesize

      120KB

    • memory/2040-134-0x0000000000000000-mapping.dmp

    • memory/2040-135-0x0000000002E20000-0x0000000002E56000-memory.dmp

      Filesize

      216KB

    • memory/2144-144-0x0000000000400000-0x000000000042E000-memory.dmp

      Filesize

      184KB

    • memory/2144-143-0x0000000000000000-mapping.dmp

    • memory/2144-146-0x0000000005530000-0x0000000005AD4000-memory.dmp

      Filesize

      5.6MB

    • memory/2144-147-0x0000000005020000-0x00000000050BC000-memory.dmp

      Filesize

      624KB

    • memory/2144-148-0x0000000006C20000-0x0000000006CB2000-memory.dmp

      Filesize

      584KB

    • memory/2144-149-0x0000000006BC0000-0x0000000006BCA000-memory.dmp

      Filesize

      40KB

    • memory/2232-132-0x0000000000F30000-0x0000000000F92000-memory.dmp

      Filesize

      392KB

    • memory/2232-133-0x0000000006810000-0x0000000006832000-memory.dmp

      Filesize

      136KB