Analysis

  • max time kernel
    16s
  • max time network
    17s
  • platform
    windows7_x64
  • resource
    win7-20240705-en
  • resource tags

    arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
  • submitted
    01-08-2024 11:22

General

  • Target

    6f6f3c5cf6e779cb7c503b94716e73e0N.exe

  • Size

    1.1MB

  • MD5

    6f6f3c5cf6e779cb7c503b94716e73e0

  • SHA1

    4593d3351517012bf4ffb71711b73e2db9482885

  • SHA256

    9f0e679e94ceaec68e0ea18348b4c80cb86a963f8371eec43c48dec3b2113597

  • SHA512

    eac8e16fc046f757ef30f198117507b5289750361408723a317d0e8e252334dae54b056238f1ff10abb7b017f8d19f57bd96a0ae344e4fd685a744b168bc03b4

  • SSDEEP

    24576:AuDXTIGaPhEYzUzA0IudFaqAmMtMM2dWks5NT:vDjlabwz9ddSD2ds

Malware Config

Signatures

  • BlackGuard

    Infostealer first seen in Late 2021.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Executes dropped EXE 2 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.

  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

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

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

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6f6f3c5cf6e779cb7c503b94716e73e0N.exe
    "C:\Users\Admin\AppData\Local\Temp\6f6f3c5cf6e779cb7c503b94716e73e0N.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1768
    • C:\Users\Admin\AppData\Local\Temp\SilverBulletSetup.exe
      "C:\Users\Admin\AppData\Local\Temp\SilverBulletSetup.exe"
      2⤵
      • Executes dropped EXE
      PID:1476
    • C:\Users\Admin\AppData\Local\Temp\configsetup.exe
      "C:\Users\Admin\AppData\Local\Temp\configsetup.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:836

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\SilverBulletSetup.exe

    Filesize

    852KB

    MD5

    980400aaf2fddc15b1e79f68465d1ad8

    SHA1

    bc789cfa145a6a4f3f662ddfdee9f2bcca33a88d

    SHA256

    60efa33b9c0624e3bb5218dbff11ae9cf6d1c6df54ec87d22727697629187176

    SHA512

    ed0bea8d9cca0e42a458f82fbc2d37daa2814b1f549948e600be41403a8d259d1ed1d6c59641ad61cd90a14a4368a366b02bd2b8b574bbaea2d5a6d2e0c0a0c2

  • C:\Users\Admin\AppData\Local\Temp\configsetup.exe

    Filesize

    293KB

    MD5

    e2fa1d3f2f79ae2b19434524dd2b1f4a

    SHA1

    a941ceeac6d5ee17ddf15e443d8e2637754f0651

    SHA256

    bf2b2288fdf61dab79f35413c77a6f16a144a5592fc62a488cb95824a7e3f11c

    SHA512

    a3d971ec26617beabd98fb90a5edc23fef91fd527f31e0ad5930b640b0dd930e47ec1948f31ff38c4e9ae68cfbe4d02eb230e1c37fc1800c8b0b305f580ef98a

  • memory/836-22-0x0000000073B9E000-0x0000000073B9F000-memory.dmp

    Filesize

    4KB

  • memory/836-23-0x0000000000880000-0x00000000008D0000-memory.dmp

    Filesize

    320KB

  • memory/836-24-0x0000000073B90000-0x000000007427E000-memory.dmp

    Filesize

    6.9MB

  • memory/836-31-0x0000000073B90000-0x000000007427E000-memory.dmp

    Filesize

    6.9MB