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Analysis

  • max time kernel
    140s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    04/03/2024, 13:45

General

  • Target

    b246e55df34671bdda4bdb3451634aa2.exe

  • Size

    1.8MB

  • MD5

    b246e55df34671bdda4bdb3451634aa2

  • SHA1

    c364a3dce87dd37f30bf9b7ca0b4acb2ebc6fd8c

  • SHA256

    2e1e00ecb82b5055185935ada275a1022daa7849f052ccd62d5d708a94524357

  • SHA512

    862e83733cc833852b4b3259ec2fe5545e4fe0a7b5fe451404d3ccefac6fe73686d955ceaaf90c491fb027ef47495adcd5fe227b6b5d5ec1e58d1b8eb699c3c6

  • SSDEEP

    49152:SYkiFwgZwmfOf6h/nhQ3De0jU5SQZW/W7xn59eyXMKl4CIq:vfZpG4nhsDXCSl/W7X4xKaJq

Malware Config

Signatures

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in Windows directory 2 IoCs
  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b246e55df34671bdda4bdb3451634aa2.exe
    "C:\Users\Admin\AppData\Local\Temp\b246e55df34671bdda4bdb3451634aa2.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2088
    • C:\Users\Admin\AppData\Local\Temp\DS2AYELno1notcd.exe
      C:\Users\Admin\AppData\Local\Temp\DS2AYELno1notcd.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2588
      • C:\Users\Admin\AppData\Local\Temp\jds259398540.tmp\DS2AYELno1notcd.exe
        "C:\Users\Admin\AppData\Local\Temp\jds259398540.tmp\DS2AYELno1notcd.exe"
        3⤵
        • Executes dropped EXE
        • Modifies Internet Explorer settings
        • Modifies system certificate store
        • Suspicious use of SetWindowsHookEx
        PID:2632
    • C:\Windows\CTS.exe
      "C:\Windows\CTS.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      PID:2852

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\jds259398540.tmp\DS2AYELno1notcd.exe

    Filesize

    1.6MB

    MD5

    109cbe148f827137c3ba62261f01b29b

    SHA1

    2cc02b09da46d9e5d0ac1b306a0bbcc12bfe4c12

    SHA256

    394ad6212e4866cc8e6d1834df8f70538dddf09d23dfa65ea204b22c012b541a

    SHA512

    a2dfa03dd290540bcfeda6cfd7d6ed891700742b4323d8c8dbfc4c822386ef1ddfff5cf71b2e5d7be9ec72fb6fc2145ff6ffc440823187d6956d5aa2794c5799

  • C:\Users\Admin\AppData\Local\Temp\jusched.log

    Filesize

    1KB

    MD5

    253e8250a163eaf7cb4fb913a010a129

    SHA1

    189fd76784d9b896c6d52e2b469ec6bf019c038e

    SHA256

    89b8077d52131ccf7110a39e0bcaa4694016aa35c90dddb7403f3c41f4b5372d

    SHA512

    8025974a98e7e7c6df047efffe262926ced59f0af787d9712da7aa17d8ed4e3a2e9bf3d690d3f060798eb0190496bf73102f2d1bd0d603a859d89f484befe946

  • C:\Users\Admin\AppData\Local\Temp\jusched.log

    Filesize

    6KB

    MD5

    451b4de0d522059e7465dffc7f832a61

    SHA1

    ed21769aea3bd74b1cbfdae9aaab1ac78b48ef58

    SHA256

    b4d678f38dba6566a30b753097a9a1a132e4566be216b1f5a180614e8d3e29a7

    SHA512

    85e9c03304ef9b1d591d588aadd77c266c187867a7a8b933b0fa0607d2c92b5e35f31aaf9172c5dc4e0b62a6e6386bae1fa4ee7a7f8a225a89ed92f0f895323d

  • C:\Windows\CTS.exe

    Filesize

    26KB

    MD5

    641f2acbcf02682f7b0e9f18a36d0998

    SHA1

    3d71e3c26c9073444064ce352b968191881185cb

    SHA256

    2b697324dd222529c9342faf00133a2accd7a3552325db1e2b70f2ddc0f98bab

    SHA512

    6283c06cc4190fcb708583c49df4e8fca15aa11f50a8d53827d8ac3466393a7f9d4a246b6300eb575e514ead682b0849f014e522ab706349d760fa595d78d999

  • \Users\Admin\AppData\Local\Temp\DS2AYELno1notcd.exe

    Filesize

    1.8MB

    MD5

    544e07d620d3108b9b6aa3384d02dea5

    SHA1

    9897596f3c4ec39e38ef7f1081783db7693ae0b2

    SHA256

    a8fb1a1473831ac6feb092afd2cbdded2d6a881d3576158fabd89090050b52f8

    SHA512

    3663b9c056447c4491635b5bdcbc6e1a2b67a432b41bab6f479da5c787c48f1067cecafdfb6d9763f9b17b553aa953ae87068ba7f0c1c93facf34db7ac53a64c

  • memory/2088-0-0x0000000000C10000-0x0000000000C27000-memory.dmp

    Filesize

    92KB

  • memory/2088-18-0x00000000000E0000-0x00000000000F7000-memory.dmp

    Filesize

    92KB

  • memory/2088-17-0x0000000000C10000-0x0000000000C27000-memory.dmp

    Filesize

    92KB

  • memory/2088-24-0x00000000000E0000-0x00000000000F7000-memory.dmp

    Filesize

    92KB

  • memory/2088-182-0x00000000000E0000-0x00000000000F7000-memory.dmp

    Filesize

    92KB

  • memory/2852-26-0x0000000000260000-0x0000000000277000-memory.dmp

    Filesize

    92KB