Analysis

  • max time kernel
    141s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    04-11-2024 08:59

General

  • Target

    Quotation.exe

  • Size

    1.2MB

  • MD5

    9ed064f0feb2397bb999563751c20b92

  • SHA1

    810d6882ab53614c20950da17021650fed89f5d8

  • SHA256

    f849a928785cb16a719369fbe98c9246bc84d634f3547467a3223fa148a6b09b

  • SHA512

    ef7d103dad237045980181b85ddc6b0d4ffbbcbdf38eb2a56b09823baae143f52c336f89ec45bd872f7dca255156b9f44208e979e37f0995a18fc7f2de359ffd

  • SSDEEP

    24576:S4nhDoAFq5Avnh/KPGB8mTyBNFX3FZNXLGQ7WczkxFnfbP9:S+hkT6vnh/J8oy5X3PNXKQKczg

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Agenttesla family
  • Guloader family
  • 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 3 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
  • 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 NtCreateThreadExHideFromDebugger 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Quotation.exe
    "C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2316
    • C:\Users\Admin\AppData\Local\Temp\Quotation.exe
      "C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
      2⤵
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2820

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\nsyD654.tmp\System.dll

    Filesize

    12KB

    MD5

    d6f54d2cefdf58836805796f55bfc846

    SHA1

    b980addc1a755b968dd5799179d3b4f1c2de9d2d

    SHA256

    f917aef484d1fbb4d723b2e2d3045cb6f5f664e61fbb3d5c577bd1c215de55d9

    SHA512

    ce67da936a93d46ef7e81abc8276787c82fd844c03630ba18afc3528c7e420c3228bfe82aeda083bb719f2d1314afae913362abd1e220cb364606519690d45db

  • memory/2316-16-0x0000000003AB0000-0x00000000054E6000-memory.dmp

    Filesize

    26.2MB

  • memory/2316-17-0x00000000776E1000-0x00000000777E2000-memory.dmp

    Filesize

    1.0MB

  • memory/2316-18-0x00000000776E0000-0x0000000077889000-memory.dmp

    Filesize

    1.7MB

  • memory/2316-19-0x0000000003AB0000-0x00000000054E6000-memory.dmp

    Filesize

    26.2MB

  • memory/2316-20-0x0000000003AB0000-0x00000000054E6000-memory.dmp

    Filesize

    26.2MB

  • memory/2820-21-0x00000000776E0000-0x0000000077889000-memory.dmp

    Filesize

    1.7MB

  • memory/2820-22-0x0000000000820000-0x0000000001882000-memory.dmp

    Filesize

    16.4MB

  • memory/2820-42-0x0000000000820000-0x0000000001882000-memory.dmp

    Filesize

    16.4MB

  • memory/2820-43-0x0000000000820000-0x0000000000860000-memory.dmp

    Filesize

    256KB