Analysis

  • max time kernel
    118s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    12-03-2024 03:21

General

  • Target

    8c6c723a4839d62780e8761b9513df5b.exe

  • Size

    189KB

  • MD5

    8c6c723a4839d62780e8761b9513df5b

  • SHA1

    3704056af3cc91c56fcca5577a60843a99732e7d

  • SHA256

    279ef35a9f2748763ffa8107d1f6c3cf6d629979ea58403af6b2297f80d9eb72

  • SHA512

    46360c4493ade57dc92112bc59681c0cc787fc192b132cbd8e62bdbbeeb23694c2a112ec2d6fad20e4630a92eaacfbf5444bc817e281fd7da7ff85b43737562d

  • SSDEEP

    3072:lojUMpar9prL/txWwbPCXMoHTXdv14469I6HptMTmshOR9:hrr9pnzbPnoH36HptMphOR

Malware Config

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

  • Chaos Ransomware 3 IoCs
  • Renames multiple (144) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Drops startup file 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Drops desktop.ini file(s) 34 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8c6c723a4839d62780e8761b9513df5b.exe
    "C:\Users\Admin\AppData\Local\Temp\8c6c723a4839d62780e8761b9513df5b.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1940
    • C:\Users\Admin\AppData\Roaming\svchost.exe
      "C:\Users\Admin\AppData\Roaming\svchost.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Drops desktop.ini file(s)
      • Sets desktop wallpaper using registry
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2628
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\@zarik [email protected]
        3⤵
          PID:1960

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Roaming\svchost.exe

      Filesize

      189KB

      MD5

      8c6c723a4839d62780e8761b9513df5b

      SHA1

      3704056af3cc91c56fcca5577a60843a99732e7d

      SHA256

      279ef35a9f2748763ffa8107d1f6c3cf6d629979ea58403af6b2297f80d9eb72

      SHA512

      46360c4493ade57dc92112bc59681c0cc787fc192b132cbd8e62bdbbeeb23694c2a112ec2d6fad20e4630a92eaacfbf5444bc817e281fd7da7ff85b43737562d

    • C:\Users\Admin\Documents\@zarik [email protected]

      Filesize

      192B

      MD5

      0f3192c97d96e862abdd464698ecbc9f

      SHA1

      d6ad1e331a8c8403159e09a16cc1ddb4b24534fb

      SHA256

      ae0665dbe51e1fc225ed189c55b77b33a17d2f707201abdc1fc3d587a424ba0e

      SHA512

      847836318b900001b2da9db34a70d8139f19132ed5d69d78c1015f24d7c5b0d4eeedae3c74717a2e24f67ec96ed68dc143dfae55db9a6773602756edac2f0aa7

    • memory/1940-0-0x0000000000330000-0x0000000000366000-memory.dmp

      Filesize

      216KB

    • memory/1940-1-0x000007FEF51D0000-0x000007FEF5BBC000-memory.dmp

      Filesize

      9.9MB

    • memory/1940-8-0x000007FEF51D0000-0x000007FEF5BBC000-memory.dmp

      Filesize

      9.9MB

    • memory/2628-7-0x0000000001130000-0x0000000001166000-memory.dmp

      Filesize

      216KB

    • memory/2628-9-0x000007FEF51D0000-0x000007FEF5BBC000-memory.dmp

      Filesize

      9.9MB

    • memory/2628-11-0x000000001AEB0000-0x000000001AF30000-memory.dmp

      Filesize

      512KB

    • memory/2628-353-0x000007FEF51D0000-0x000007FEF5BBC000-memory.dmp

      Filesize

      9.9MB