Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-01-2024 14:57

General

  • Target

    bnn.exe

  • Size

    1.1MB

  • MD5

    a75a9fe738f5b6b2b34daf99fef72cf5

  • SHA1

    4e93be3a205b7c085efb0b79fd92103bf4dce15f

  • SHA256

    370e02c2619bd47c427f97881eafc89167f58084e9f41c9d9edc81318180d405

  • SHA512

    c118daa3f26e08464333a3f0db9fda9fd7d31df854e3a1e032e4da1b70e5e113fb2de96ddc7c6b5ecdb96cd52d7cccfcdeec7f79de9c71f36c76378a322804a3

  • SSDEEP

    24576:9qDEvCTbMWu7rQYlBQcBiT6rprG8aZCsPgMrg:9TvC/MTQYxsWR7aZCs

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot6036191007:AAG666CvGTNytMyFGIeVwbtc7GwGgBSmgOE/

Signatures

  • AgentTesla

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

  • 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
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bnn.exe
    "C:\Users\Admin\AppData\Local\Temp\bnn.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:3564
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Users\Admin\AppData\Local\Temp\bnn.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:5008

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/3564-10-0x00000000025F0000-0x00000000025F4000-memory.dmp

    Filesize

    16KB

  • memory/5008-11-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/5008-12-0x0000000073CB0000-0x0000000074460000-memory.dmp

    Filesize

    7.7MB

  • memory/5008-13-0x0000000005880000-0x0000000005E24000-memory.dmp

    Filesize

    5.6MB

  • memory/5008-14-0x00000000051C0000-0x00000000051D0000-memory.dmp

    Filesize

    64KB

  • memory/5008-15-0x00000000051D0000-0x0000000005236000-memory.dmp

    Filesize

    408KB

  • memory/5008-16-0x00000000065B0000-0x0000000006600000-memory.dmp

    Filesize

    320KB

  • memory/5008-17-0x00000000066A0000-0x0000000006732000-memory.dmp

    Filesize

    584KB

  • memory/5008-18-0x0000000006630000-0x000000000663A000-memory.dmp

    Filesize

    40KB

  • memory/5008-19-0x0000000073CB0000-0x0000000074460000-memory.dmp

    Filesize

    7.7MB

  • memory/5008-20-0x00000000051C0000-0x00000000051D0000-memory.dmp

    Filesize

    64KB