Analysis

  • max time kernel
    151s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-en-20211014
  • submitted
    18-10-2021 10:00

General

  • Target

    f4a017798debc249a211382a6ee173ae.exe

  • Size

    339KB

  • MD5

    f4a017798debc249a211382a6ee173ae

  • SHA1

    ee22a64c96a1a9420297a4f5fac53d1b57c857fd

  • SHA256

    0bd4e5e0255dc4522b82cb22b93d899792243265c4a42a8437a613694e77970d

  • SHA512

    db421c27a4e0ca5ae02c94389a4ec4732ce81875b1908057cad7848224b87e5257958f88433af80051590f36906a115741ecf19e14047e95ab74879ef696389a

Malware Config

Signatures

  • Taurus Stealer

    Taurus is an infostealer first seen in June 2020.

  • Taurus Stealer Payload 2 IoCs
  • Deletes itself 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f4a017798debc249a211382a6ee173ae.exe
    "C:\Users\Admin\AppData\Local\Temp\f4a017798debc249a211382a6ee173ae.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1216
    • C:\Windows\SysWOW64\cmd.exe
      /c timeout /t 3 & del /f /q C:\Users\Admin\AppData\Local\Temp\f4a017798debc249a211382a6ee173ae.exe
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:864
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 3
        3⤵
        • Delays execution with timeout.exe
        PID:960

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/864-59-0x0000000000000000-mapping.dmp

  • memory/960-60-0x0000000000000000-mapping.dmp

  • memory/1216-55-0x0000000002BA8000-0x0000000002BCB000-memory.dmp

    Filesize

    140KB

  • memory/1216-56-0x00000000002D0000-0x0000000000308000-memory.dmp

    Filesize

    224KB

  • memory/1216-57-0x0000000076531000-0x0000000076533000-memory.dmp

    Filesize

    8KB

  • memory/1216-58-0x0000000000400000-0x0000000002AF0000-memory.dmp

    Filesize

    38.9MB