Analysis

  • max time kernel
    135s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-06-2024 01:39

General

  • Target

    91aaa529420c12fbd34da00273de2453c206c09d994802f0b2eb7e89fbe7a0c2.exe

  • Size

    872KB

  • MD5

    0554428077178ad08f6323a63f539c20

  • SHA1

    83c73ab3c57ad7c32d690b9f3016f1548535c1ff

  • SHA256

    91aaa529420c12fbd34da00273de2453c206c09d994802f0b2eb7e89fbe7a0c2

  • SHA512

    9b2ceb31765f82bf4d23175ec2ba58056df6aaf8bdd026fa28767baf024d81ffa7fcc399457c1c206d74e3fae2e567ebb4d3d7424846f9aa83f777395beb82b6

  • SSDEEP

    12288:jjADhreCPb6Al2sNSj6c1WQK0DvFHPBVcjstytYyn37lKzdlqLPHTVHKL+wm:jjADhreCPc2YDv54B7l8vqzRHKi

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://ftp.carbognin.it
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    59Cif8wZUH#X

Signatures

  • AgentTesla

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

  • Detect packed .NET executables. Mostly AgentTeslaV4. 1 IoCs
  • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 1 IoCs
  • Detects executables referencing Windows vault credential objects. Observed in infostealers 1 IoCs
  • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 1 IoCs
  • Detects executables referencing many email and collaboration clients. Observed in information stealers 1 IoCs
  • Detects executables referencing many file transfer clients. Observed in information stealers 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\91aaa529420c12fbd34da00273de2453c206c09d994802f0b2eb7e89fbe7a0c2.exe
    "C:\Users\Admin\AppData\Local\Temp\91aaa529420c12fbd34da00273de2453c206c09d994802f0b2eb7e89fbe7a0c2.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4388
    • C:\Users\Admin\AppData\Local\Temp\91aaa529420c12fbd34da00273de2453c206c09d994802f0b2eb7e89fbe7a0c2.exe
      "C:\Users\Admin\AppData\Local\Temp\91aaa529420c12fbd34da00273de2453c206c09d994802f0b2eb7e89fbe7a0c2.exe"
      2⤵
        PID:3332
      • C:\Users\Admin\AppData\Local\Temp\91aaa529420c12fbd34da00273de2453c206c09d994802f0b2eb7e89fbe7a0c2.exe
        "C:\Users\Admin\AppData\Local\Temp\91aaa529420c12fbd34da00273de2453c206c09d994802f0b2eb7e89fbe7a0c2.exe"
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4440
    • 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 --field-trial-handle=4204,i,13035806169561352434,1332896185314862791,262144 --variations-seed-version --mojo-platform-channel-handle=4244 /prefetch:8
      1⤵
        PID:112

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\91aaa529420c12fbd34da00273de2453c206c09d994802f0b2eb7e89fbe7a0c2.exe.log

        Filesize

        1KB

        MD5

        60c8003e2f816f12023254fdd5b2d734

        SHA1

        43dd8890e4dffbf0bc0c646f1fedb6edbe567677

        SHA256

        e148a6fa62202ed6cdb253f3ae65fc29bd1e7de0ca38c30224b0cde27d80ff99

        SHA512

        59580ba990f7b03269a66d533ba96e54fee1beb2bdb1ded6de07e51f600635304d4fb5a06e601f20338d57f44633566b557374ec80881803c540edc6e4fd01a2

      • memory/4388-10-0x0000000074670000-0x0000000074E20000-memory.dmp

        Filesize

        7.7MB

      • memory/4388-12-0x00000000076E0000-0x00000000076E6000-memory.dmp

        Filesize

        24KB

      • memory/4388-1-0x0000000000F60000-0x0000000001040000-memory.dmp

        Filesize

        896KB

      • memory/4388-4-0x0000000074670000-0x0000000074E20000-memory.dmp

        Filesize

        7.7MB

      • memory/4388-5-0x0000000005D80000-0x0000000006324000-memory.dmp

        Filesize

        5.6MB

      • memory/4388-6-0x0000000006530000-0x0000000006574000-memory.dmp

        Filesize

        272KB

      • memory/4388-7-0x00000000067E0000-0x00000000067EA000-memory.dmp

        Filesize

        40KB

      • memory/4388-16-0x0000000074670000-0x0000000074E20000-memory.dmp

        Filesize

        7.7MB

      • memory/4388-9-0x000000007467E000-0x000000007467F000-memory.dmp

        Filesize

        4KB

      • memory/4388-3-0x0000000005730000-0x00000000057C2000-memory.dmp

        Filesize

        584KB

      • memory/4388-8-0x0000000074670000-0x0000000074E20000-memory.dmp

        Filesize

        7.7MB

      • memory/4388-11-0x00000000076B0000-0x00000000076CA000-memory.dmp

        Filesize

        104KB

      • memory/4388-2-0x0000000005690000-0x000000000572C000-memory.dmp

        Filesize

        624KB

      • memory/4388-0-0x000000007467E000-0x000000007467F000-memory.dmp

        Filesize

        4KB

      • memory/4440-19-0x0000000074670000-0x0000000074E20000-memory.dmp

        Filesize

        7.7MB

      • memory/4440-13-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB

      • memory/4440-18-0x0000000005920000-0x0000000005986000-memory.dmp

        Filesize

        408KB

      • memory/4440-17-0x0000000074670000-0x0000000074E20000-memory.dmp

        Filesize

        7.7MB

      • memory/4440-20-0x00000000066D0000-0x0000000006720000-memory.dmp

        Filesize

        320KB

      • memory/4440-21-0x0000000074670000-0x0000000074E20000-memory.dmp

        Filesize

        7.7MB