Analysis

  • max time kernel
    137s
  • max time network
    60s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    27-07-2021 13:13

General

  • Target

    SOA.exe

  • Size

    804KB

  • MD5

    60183d985a20da08edde84ad283fdb57

  • SHA1

    fa905171e489e10068ba2853fcf8c83865019283

  • SHA256

    0663ffc968c7a2870e7c3234b4c2c2c5bae705a12a1f84ff4527af8d8b9466e5

  • SHA512

    074645a61274efa80eb6451abd37628fef9d15ff889cdc6fb6da74baf2514160e8d0f049c4927fa3890baaa031f945dbdd03604535d4cb26374f38c6db406cff

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    Mail.jingtai.com.vn
  • Port:
    587
  • Username:
    markhung@jingtai.com.vn
  • Password:
    truongtuyen2209

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • Drops file in Drivers directory 1 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
  • 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 use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SOA.exe
    "C:\Users\Admin\AppData\Local\Temp\SOA.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1100
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\kzsOkRNINsZo" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA821.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:112
    • C:\Users\Admin\AppData\Local\Temp\SOA.exe
      "{path}"
      2⤵
        PID:616
      • C:\Users\Admin\AppData\Local\Temp\SOA.exe
        "{path}"
        2⤵
        • Drops file in Drivers directory
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1552

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Scheduled Task

    1
    T1053

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Scheduled Task

    1
    T1053

    Privilege Escalation

    Scheduled Task

    1
    T1053

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Credentials in Files

    3
    T1081

    Discovery

    System Information Discovery

    1
    T1082

    Collection

    Data from Local System

    3
    T1005

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmpA821.tmp
      MD5

      0568c6d3109a60f49abb097ba134b39c

      SHA1

      066f7110cfacf03e57567b7c7f11fc7c0ee626ab

      SHA256

      df5393d39c701b4697606ea97a1709ebdaab47e0c62c39e07fa68cc7b39e3f84

      SHA512

      dbed01c2d01f08af918dd35fcf3bec3e530ee793769b28463dde2c4353d4774c1fe9b5a06b92fe4e3864c33e260f00a01ceebaf83c4280511c6e2a7cadc3340f

    • memory/112-66-0x0000000000000000-mapping.dmp
    • memory/1100-60-0x00000000013D0000-0x00000000013D1000-memory.dmp
      Filesize

      4KB

    • memory/1100-62-0x0000000004CD0000-0x0000000004CD1000-memory.dmp
      Filesize

      4KB

    • memory/1100-63-0x00000000003C0000-0x00000000003C2000-memory.dmp
      Filesize

      8KB

    • memory/1100-64-0x0000000005BE0000-0x0000000005C63000-memory.dmp
      Filesize

      524KB

    • memory/1100-65-0x0000000000DD0000-0x0000000000E0D000-memory.dmp
      Filesize

      244KB

    • memory/1552-69-0x000000000043768E-mapping.dmp
    • memory/1552-68-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/1552-70-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/1552-72-0x0000000004C00000-0x0000000004C01000-memory.dmp
      Filesize

      4KB

    • memory/1552-73-0x0000000004C01000-0x0000000004C02000-memory.dmp
      Filesize

      4KB