Analysis

  • max time kernel
    244s
  • max time network
    244s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    28-01-2021 21:12

General

  • Target

    DEBIT NOTE pdf.exe

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    us2.smtp.mailhostbox.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    12345@cashmonni

Signatures

  • AgentTesla

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

  • AgentTesla Payload 2 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.

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

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

  • 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 behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\DEBIT NOTE pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\DEBIT NOTE pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1404
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\pvfFeRZiRz" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2403.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4068
    • C:\Users\Admin\AppData\Local\Temp\DEBIT NOTE pdf.exe
      "{path}"
      2⤵
        PID:584
      • C:\Users\Admin\AppData\Local\Temp\DEBIT NOTE pdf.exe
        "{path}"
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: RenamesItself
        • Suspicious use of AdjustPrivilegeToken
        PID:876

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      MD5

      b4f7a6a57cb46d94b72410eb6a6d45a9

      SHA1

      69f3596ffa027202d391444b769ceea0ae14c5f7

      SHA256

      23994ebe221a48ea16ebad51ae0d4b47ccd415ae10581f9405e588d4f6c2523b

      SHA512

      be6da516e54c3a5b33ac2603137a2f8cf8445ff5961dd266faedf3627bae8979953d7ef305538df0151c609917a5b99bf5d023bdd32de50fd5c723950f90db5c

    • C:\Users\Admin\AppData\Local\Temp\tmp2403.tmp

      MD5

      5ce2c13325c3d221b35e0a3bb0bbcbc6

      SHA1

      e7f8b191f2e999f8e9d4bc97d99a87fa8cfcc903

      SHA256

      e3968b225dd9af0f5977cae0a1e7761c8c9a1b84d9e935d929fce62afcbac166

      SHA512

      103095d878b00e1ce46eff7081d330d66a9e6bdcfd4c292ddb79cd88c6c47611b22fc3a8dff57c89a8bb9c78217d0fc0064a7ada3bb5863ad2d44567db2353e8

    • memory/876-27-0x00000000051D1000-0x00000000051D2000-memory.dmp

      Filesize

      4KB

    • memory/876-24-0x0000000005F00000-0x0000000005F01000-memory.dmp

      Filesize

      4KB

    • memory/876-23-0x0000000005E70000-0x0000000005E71000-memory.dmp

      Filesize

      4KB

    • memory/876-22-0x00000000051D0000-0x00000000051D1000-memory.dmp

      Filesize

      4KB

    • memory/876-17-0x0000000073550000-0x0000000073C3E000-memory.dmp

      Filesize

      6.9MB

    • memory/876-15-0x000000000043762E-mapping.dmp

    • memory/876-14-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/1404-7-0x0000000007BA0000-0x0000000007BA1000-memory.dmp

      Filesize

      4KB

    • memory/1404-11-0x0000000009DD0000-0x0000000009DD1000-memory.dmp

      Filesize

      4KB

    • memory/1404-10-0x00000000015A0000-0x00000000015FD000-memory.dmp

      Filesize

      372KB

    • memory/1404-9-0x0000000007B90000-0x0000000007B94000-memory.dmp

      Filesize

      16KB

    • memory/1404-8-0x0000000007970000-0x0000000007971000-memory.dmp

      Filesize

      4KB

    • memory/1404-2-0x0000000073550000-0x0000000073C3E000-memory.dmp

      Filesize

      6.9MB

    • memory/1404-6-0x0000000007990000-0x0000000007991000-memory.dmp

      Filesize

      4KB

    • memory/1404-5-0x0000000007DB0000-0x0000000007DB1000-memory.dmp

      Filesize

      4KB

    • memory/1404-3-0x0000000000B90000-0x0000000000B91000-memory.dmp

      Filesize

      4KB

    • memory/4068-12-0x0000000000000000-mapping.dmp