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Analysis

  • max time kernel
    143s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/08/2023, 14:42

General

  • Target

    6e661564df86bdba62028ad317f579b9ee7d91b4d131b26ea3efad24992a065c_JC.exe

  • Size

    968KB

  • MD5

    513142f5bce52f2ee107ea67c999d39b

  • SHA1

    303c82a2f3d32f625bfbc3bd6d6c03b18c9fd354

  • SHA256

    6e661564df86bdba62028ad317f579b9ee7d91b4d131b26ea3efad24992a065c

  • SHA512

    b2fe8fdc970a500fe2fa12a4bb971c801d99aef20434c5928629627f6d9f708124704d135790aa757f26e8dc130564770754411ec05a3fb9038aadd26dcd166c

  • SSDEEP

    12288:mK4JuxVWU6i5dKSWrVTgmSkN8JKRQmZ2CWPeCDv4m:Jy8VW526VBImZ23PZ

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • 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.

  • 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).

  • 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6e661564df86bdba62028ad317f579b9ee7d91b4d131b26ea3efad24992a065c_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\6e661564df86bdba62028ad317f579b9ee7d91b4d131b26ea3efad24992a065c_JC.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2476
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\kceJBsRviLeeRB" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB41.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4936
    • C:\Users\Admin\AppData\Local\Temp\6e661564df86bdba62028ad317f579b9ee7d91b4d131b26ea3efad24992a065c_JC.exe
      "{path}"
      2⤵
        PID:3940
      • C:\Users\Admin\AppData\Local\Temp\6e661564df86bdba62028ad317f579b9ee7d91b4d131b26ea3efad24992a065c_JC.exe
        "{path}"
        2⤵
        • Adds Run key to start application
        • Suspicious use of AdjustPrivilegeToken
        PID:3356

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\6e661564df86bdba62028ad317f579b9ee7d91b4d131b26ea3efad24992a065c_JC.exe.log

      Filesize

      1KB

      MD5

      17573558c4e714f606f997e5157afaac

      SHA1

      13e16e9415ceef429aaf124139671ebeca09ed23

      SHA256

      c18db6aecad2436da4a63ff26af4e3a337cca48f01c21b8db494fe5ccc60e553

      SHA512

      f4edf13f05a0d142e4dd42802098c8c44988ee8869621a62c2b565a77c9a95857f636583ff8d6d9baa366603d98b9bfbf1fc75bc6f9f8f83c80cb1215b2941cc

    • C:\Users\Admin\AppData\Local\Temp\tmpB41.tmp

      Filesize

      1KB

      MD5

      ba619d44f4bff5e4f7b18e8cd9d858c2

      SHA1

      a7108edcb98b1130ef25d7f06b44884aab3aa352

      SHA256

      8fd61d2b30ce21b8cc8d12c2150e55145fbd8f28806fc75f9004cc2bbac3a59d

      SHA512

      b1e01f4516cfc7931cb1aad7652ad150685fe5ce76bc7268ada8ec4abe22b0bdf425bb55ecd3aa72002775ff602f99c116029317ed5531d633d6172acd658c4e

    • memory/2476-5-0x0000000005510000-0x0000000005520000-memory.dmp

      Filesize

      64KB

    • memory/2476-17-0x0000000074730000-0x0000000074EE0000-memory.dmp

      Filesize

      7.7MB

    • memory/2476-4-0x00000000053C0000-0x0000000005452000-memory.dmp

      Filesize

      584KB

    • memory/2476-0-0x0000000074730000-0x0000000074EE0000-memory.dmp

      Filesize

      7.7MB

    • memory/2476-6-0x00000000052C0000-0x00000000052CA000-memory.dmp

      Filesize

      40KB

    • memory/2476-7-0x0000000005610000-0x0000000005666000-memory.dmp

      Filesize

      344KB

    • memory/2476-8-0x0000000074730000-0x0000000074EE0000-memory.dmp

      Filesize

      7.7MB

    • memory/2476-9-0x0000000005510000-0x0000000005520000-memory.dmp

      Filesize

      64KB

    • memory/2476-2-0x0000000005320000-0x00000000053BC000-memory.dmp

      Filesize

      624KB

    • memory/2476-3-0x0000000005970000-0x0000000005F14000-memory.dmp

      Filesize

      5.6MB

    • memory/2476-1-0x00000000007D0000-0x00000000008C8000-memory.dmp

      Filesize

      992KB

    • memory/3356-13-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/3356-16-0x0000000074730000-0x0000000074EE0000-memory.dmp

      Filesize

      7.7MB

    • memory/3356-18-0x0000000005640000-0x0000000005650000-memory.dmp

      Filesize

      64KB

    • memory/3356-19-0x00000000054D0000-0x0000000005536000-memory.dmp

      Filesize

      408KB

    • memory/3356-21-0x00000000070A0000-0x00000000070F0000-memory.dmp

      Filesize

      320KB

    • memory/3356-22-0x00000000072C0000-0x0000000007482000-memory.dmp

      Filesize

      1.8MB

    • memory/3356-23-0x0000000074730000-0x0000000074EE0000-memory.dmp

      Filesize

      7.7MB

    • memory/3356-24-0x0000000005640000-0x0000000005650000-memory.dmp

      Filesize

      64KB