Analysis

  • max time kernel
    128s
  • max time network
    11s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    26-01-2021 14:31

General

  • Target

    PO #673975. PO #192075.exe

  • Size

    1.8MB

  • MD5

    2872c85bb890812c9619fcc931ce05a2

  • SHA1

    e96d950ac073aeee49b241eae694b76940e8cf95

  • SHA256

    46096a5640a91cddbb2ea4d49d24f6df8e2d079f68a2559849ee9ff3a50281c3

  • SHA512

    8346292a7cc7720a0472fc14c709703bd06e7ff2c523cc85dfa607f27e3f0b175a4f3ee030f7b1612a5188fb2912308d7690d2ed5e4108f8ab445c5695ab2558

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.newviking.com.my
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    {&SgX:^(7m

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO #673975. PO #192075.exe
    "C:\Users\Admin\AppData\Local\Temp\PO #673975. PO #192075.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1056
    • C:\Users\Admin\AppData\Local\Temp\PO #673975. PO #192075.exe
      "C:\Users\Admin\AppData\Local\Temp\PO #673975. PO #192075.exe"
      2⤵
        PID:1668
      • C:\Users\Admin\AppData\Local\Temp\PO #673975. PO #192075.exe
        "C:\Users\Admin\AppData\Local\Temp\PO #673975. PO #192075.exe"
        2⤵
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: RenamesItself
        • Suspicious use of AdjustPrivilegeToken
        PID:1616

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1056-2-0x0000000073C60000-0x000000007434E000-memory.dmp

      Filesize

      6.9MB

    • memory/1056-3-0x00000000011E0000-0x00000000011E1000-memory.dmp

      Filesize

      4KB

    • memory/1056-10-0x0000000000320000-0x000000000035E000-memory.dmp

      Filesize

      248KB

    • memory/1056-11-0x0000000005DC0000-0x0000000005DC1000-memory.dmp

      Filesize

      4KB

    • memory/1616-12-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/1616-13-0x000000000043763E-mapping.dmp

    • memory/1616-14-0x0000000073C60000-0x000000007434E000-memory.dmp

      Filesize

      6.9MB

    • memory/1616-15-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/1616-17-0x0000000004B80000-0x0000000004B81000-memory.dmp

      Filesize

      4KB

    • memory/1616-18-0x0000000004B81000-0x0000000004B82000-memory.dmp

      Filesize

      4KB