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Analysis

  • max time kernel
    166s
  • max time network
    173s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/03/2024, 15:27

General

  • Target

    Pago Transferencias 897877667.exe

  • Size

    812KB

  • MD5

    fb8b15d6bd446628322c1b99b8fa8fd6

  • SHA1

    d78c815199c63a24d0b290ed4ef641ea2a301a94

  • SHA256

    4e9b3f914eaa619fc41ec582d09594b67cf581d38d8c0d4ff911b2d2d37f7846

  • SHA512

    8cb436beced7910dc2d82687d413389b450a22ed6fd731752852cb6e313161189130524190b310acf447a1799ac1580e35cf6552c8b27c899dee21df97f9be9f

  • SSDEEP

    12288:mgOiqjF+Wf8BHOLjv6T+lPs9szHc0DcBqQvzorzKfbV6pBp5unRO:mgYF+xVP4U9sbmXorCV6rp5uRO

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Loads dropped DLL 1 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • 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.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Drops file in System32 directory 1 IoCs
  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Pago Transferencias 897877667.exe
    "C:\Users\Admin\AppData\Local\Temp\Pago Transferencias 897877667.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Drops file in Windows directory
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:220
    • C:\Users\Admin\AppData\Local\Temp\Pago Transferencias 897877667.exe
      "C:\Users\Admin\AppData\Local\Temp\Pago Transferencias 897877667.exe"
      2⤵
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2916
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=2392 --field-trial-handle=2276,i,11674642242468042059,14711253743544118298,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:1744

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\nsjE685.tmp\Spahees99.lnk

      Filesize

      1KB

      MD5

      055df554a7743ac647504ef92c7533a3

      SHA1

      c91dd0b0b417a699b4e7e2a989340641b0bdc443

      SHA256

      afcf6dc345748919e446fc94a70930b44e3d03bf0973acdd97d7050255641044

      SHA512

      532a672595aca5badd1e36ab0c8b59509cf9e6a9b91b7293a438685390b293da1955618c4100f2a21790395dd8b16cbf566aa5839bf930c3636997807cd9542d

    • C:\Users\Admin\AppData\Local\Temp\nsjE685.tmp\System.dll

      Filesize

      12KB

      MD5

      0d7ad4f45dc6f5aa87f606d0331c6901

      SHA1

      48df0911f0484cbe2a8cdd5362140b63c41ee457

      SHA256

      3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca

      SHA512

      c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9

    • memory/220-287-0x00000000052B0000-0x0000000007A66000-memory.dmp

      Filesize

      39.7MB

    • memory/220-288-0x00000000052B0000-0x0000000007A66000-memory.dmp

      Filesize

      39.7MB

    • memory/220-289-0x00000000779A1000-0x0000000077AC1000-memory.dmp

      Filesize

      1.1MB

    • memory/220-290-0x00000000745F0000-0x00000000745F7000-memory.dmp

      Filesize

      28KB

    • memory/220-308-0x00000000052B0000-0x0000000007A66000-memory.dmp

      Filesize

      39.7MB

    • memory/2916-307-0x00000000779A1000-0x0000000077AC1000-memory.dmp

      Filesize

      1.1MB

    • memory/2916-312-0x00000000004E0000-0x0000000000520000-memory.dmp

      Filesize

      256KB

    • memory/2916-306-0x00000000004E0000-0x0000000001734000-memory.dmp

      Filesize

      18.3MB

    • memory/2916-292-0x0000000077A28000-0x0000000077A29000-memory.dmp

      Filesize

      4KB

    • memory/2916-291-0x0000000001740000-0x0000000003EF6000-memory.dmp

      Filesize

      39.7MB

    • memory/2916-310-0x00000000746A0000-0x0000000074E50000-memory.dmp

      Filesize

      7.7MB

    • memory/2916-311-0x0000000001740000-0x0000000003EF6000-memory.dmp

      Filesize

      39.7MB

    • memory/2916-293-0x0000000077A45000-0x0000000077A46000-memory.dmp

      Filesize

      4KB

    • memory/2916-313-0x0000000036C20000-0x00000000371C4000-memory.dmp

      Filesize

      5.6MB

    • memory/2916-314-0x0000000037370000-0x0000000037380000-memory.dmp

      Filesize

      64KB

    • memory/2916-315-0x00000000348D0000-0x0000000034936000-memory.dmp

      Filesize

      408KB

    • memory/2916-316-0x0000000037580000-0x00000000375D0000-memory.dmp

      Filesize

      320KB

    • memory/2916-317-0x00000000375D0000-0x0000000037662000-memory.dmp

      Filesize

      584KB

    • memory/2916-319-0x0000000037690000-0x000000003769A000-memory.dmp

      Filesize

      40KB

    • memory/2916-321-0x00000000746A0000-0x0000000074E50000-memory.dmp

      Filesize

      7.7MB

    • memory/2916-322-0x0000000037370000-0x0000000037380000-memory.dmp

      Filesize

      64KB