Analysis

  • max time kernel
    118s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    25-12-2023 14:07

General

  • Target

    243b8405591a802effda2dd8fdea721b.exe

  • Size

    436KB

  • MD5

    243b8405591a802effda2dd8fdea721b

  • SHA1

    f8e24757032c1dca93bbbc439b9e425ea2466692

  • SHA256

    ea1e39d0b402495b829ab7ce68472e31107f011c7b7e45bb3d13460dc6c957d8

  • SHA512

    b9a1b64609fe178f2228285c0ebc2b9c22f2a2cc155dd700954a134de67f74e01351d8784957c3cb358d23df1ee131b7c08f06b658d3a576771afb239570a135

  • SSDEEP

    12288:SeZL60a7gr6KJ525uSHIJVuE+YqYjffK0jRuKJM0r/0QGl:JZLBrjJ5chgF8YzS2j07l

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\243b8405591a802effda2dd8fdea721b.exe
    "C:\Users\Admin\AppData\Local\Temp\243b8405591a802effda2dd8fdea721b.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of WriteProcessMemory
    PID:2252
    • C:\Users\Admin\AppData\Local\Temp\nst1C59.tmp\APNStub.exe
      "C:\Users\Admin\AppData\Local\Temp\nst1C59.tmp\APNStub.exe" /tb=BDE
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:2592

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\nst1C59.tmp\APNIC.dll

    Filesize

    240KB

    MD5

    197215658b8015182192e1ebca3bbcc3

    SHA1

    40e49124ad0b55a25f947333ca88e9d0bc30a7e3

    SHA256

    08db125c09eb53cc28e7bc7c427b6c2217ff6134a122e6d65d1d24f70e875d9e

    SHA512

    5fe9d6c96c817bd64ea78ff511734e9e11e6ca13b4506b589156a801fa4fed568c37d958cfafb96ad86ee1229ceeb35165965cb776f3a74cafaedb1a946bbf79

  • C:\Users\Admin\AppData\Local\Temp\nst1C59.tmp\ApnStub.exe

    Filesize

    139KB

    MD5

    c36923084822c017f69396418a999d39

    SHA1

    fdc2005ced8acf86c68fe1b86b0698d0539e8ce0

    SHA256

    7a158fdeea8f7107be5ce40242546a503193aa1c278f74a4730871b8edd0ba76

    SHA512

    fb1106d4f4a138cad28a4282cb00c72688e03610be1d31a7cdd7b42b23e00e4f7ca9e731a7ab016d5920411707e165e3ee48164ef520112d8ac36fad85749c44