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Analysis

  • max time kernel
    142s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-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 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 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:2956
    • 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:2236

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\nso9D6A.tmp\Spahees99.lnk

    Filesize

    1KB

    MD5

    a79486938daa3391f3ff5a53eacecfca

    SHA1

    571ef1bd39326d0c734bef4d94cf8bf4ff468800

    SHA256

    d42e6f59cf406bdf0d364adbd913dcfb681d778cb90ebd33a36660c849eb2921

    SHA512

    a678ff6a3f1247cb18ea87f1f8b4f08a0c23d351c65c53a9e93748ed5e0f52b2afb184c90831de78fc80b67dfee775345370ad16d43d1278c3a811ce65c67b5b

  • \Users\Admin\AppData\Local\Temp\nso9D6A.tmp\System.dll

    Filesize

    12KB

    MD5

    0d7ad4f45dc6f5aa87f606d0331c6901

    SHA1

    48df0911f0484cbe2a8cdd5362140b63c41ee457

    SHA256

    3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca

    SHA512

    c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9

  • memory/2236-319-0x00000000004E0000-0x0000000001542000-memory.dmp

    Filesize

    16.4MB

  • memory/2236-318-0x0000000001550000-0x0000000003D06000-memory.dmp

    Filesize

    39.7MB

  • memory/2236-327-0x00000000719F0000-0x00000000720DE000-memory.dmp

    Filesize

    6.9MB

  • memory/2236-323-0x0000000036930000-0x0000000036970000-memory.dmp

    Filesize

    256KB

  • memory/2236-322-0x00000000719F0000-0x00000000720DE000-memory.dmp

    Filesize

    6.9MB

  • memory/2236-293-0x0000000001550000-0x0000000003D06000-memory.dmp

    Filesize

    39.7MB

  • memory/2236-294-0x0000000077620000-0x00000000777C9000-memory.dmp

    Filesize

    1.7MB

  • memory/2236-295-0x0000000077846000-0x0000000077847000-memory.dmp

    Filesize

    4KB

  • memory/2236-314-0x00000000004E0000-0x0000000001542000-memory.dmp

    Filesize

    16.4MB

  • memory/2236-321-0x00000000004E0000-0x0000000000520000-memory.dmp

    Filesize

    256KB

  • memory/2236-320-0x0000000077810000-0x00000000778E6000-memory.dmp

    Filesize

    856KB

  • memory/2956-288-0x0000000003AE0000-0x0000000006296000-memory.dmp

    Filesize

    39.7MB

  • memory/2956-289-0x0000000003AE0000-0x0000000006296000-memory.dmp

    Filesize

    39.7MB

  • memory/2956-292-0x0000000074D20000-0x0000000074D27000-memory.dmp

    Filesize

    28KB

  • memory/2956-291-0x0000000077810000-0x00000000778E6000-memory.dmp

    Filesize

    856KB

  • memory/2956-324-0x0000000003AE0000-0x0000000006296000-memory.dmp

    Filesize

    39.7MB

  • memory/2956-290-0x0000000077620000-0x00000000777C9000-memory.dmp

    Filesize

    1.7MB