Analysis

  • max time kernel
    135s
  • max time network
    129s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    08-04-2021 03:33

General

  • Target

    nunu.exe

  • Size

    507KB

  • MD5

    c7fa443b722dd4bffcda58dbd6a8ad71

  • SHA1

    d41111e463dfaa1c10a50f0a6a5d48fc8ae4f7e7

  • SHA256

    a321481a5f943697829963ca1ebfafb6f4857ee1af0119daf7c9e274d4e756a0

  • SHA512

    52e8a71c2214e5cde34a6ff055ee944bfc3d06f8dcb82b247a0d3ab02417bfb6a836457fb7de9e145de5be04a7805a1b61a197e0a48c92234de8e31c53ce12d2

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.dtvcambodia.com
  • Port:
    587
  • Username:
    leakkim@dtvcambodia.com
  • Password:
    @DTVcambodia2017

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\nunu.exe
    "C:\Users\Admin\AppData\Local\Temp\nunu.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:548
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:980

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/548-2-0x0000000074B50000-0x000000007523E000-memory.dmp
    Filesize

    6.9MB

  • memory/548-3-0x0000000001380000-0x0000000001381000-memory.dmp
    Filesize

    4KB

  • memory/548-5-0x0000000004F20000-0x0000000004F21000-memory.dmp
    Filesize

    4KB

  • memory/548-6-0x0000000000EC0000-0x0000000000EC4000-memory.dmp
    Filesize

    16KB

  • memory/548-7-0x000000007EF40000-0x000000007EF41000-memory.dmp
    Filesize

    4KB

  • memory/548-8-0x0000000005160000-0x00000000051D1000-memory.dmp
    Filesize

    452KB

  • memory/548-9-0x00000000012D0000-0x000000000130B000-memory.dmp
    Filesize

    236KB

  • memory/980-10-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/980-11-0x000000000043764E-mapping.dmp
  • memory/980-12-0x0000000074B50000-0x000000007523E000-memory.dmp
    Filesize

    6.9MB

  • memory/980-13-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/980-15-0x00000000006B0000-0x00000000006B1000-memory.dmp
    Filesize

    4KB