Analysis

  • max time kernel
    116s
  • max time network
    58s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    11/08/2021, 16:08

General

  • Target
    6924ee9d8e29ada9a98b783c50ae5263.exe
  • Size 180KB
  • Sample210811-6ftycbbjas
  • SHA256 e95e2e16abd42f380c142cdbc9b545cdb32076ffebc3021ba5e7503d6e292d35
  • MD5 SHA1 SHA512

Malware Config

Signatures

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

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

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

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6924ee9d8e29ada9a98b783c50ae5263.exe
    "C:\Users\Admin\AppData\Local\Temp\6924ee9d8e29ada9a98b783c50ae5263.exe"
    1⤵
    • Modifies system certificate store
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1932
    • C:\Users\Admin\AppData\Roaming\4430837.exe
      "C:\Users\Admin\AppData\Roaming\4430837.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1164
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 1164 -s 1968
        3⤵
        • Program crash
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        PID:1528
    • C:\Users\Admin\AppData\Roaming\3288069.exe
      "C:\Users\Admin\AppData\Roaming\3288069.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:764
      • C:\Users\Admin\AppData\Roaming\WinHost\WinHoster.exe
        "C:\Users\Admin\AppData\Roaming\WinHost\WinHoster.exe"
        3⤵
        • Executes dropped EXE
        PID:1172

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/764-79-0x00000000001E0000-0x00000000001E7000-memory.dmp

        memory/764-74-0x00000000002D0000-0x00000000002D1000-memory.dmp

        memory/1164-73-0x00000000002C0000-0x00000000002C1000-memory.dmp

        memory/1164-78-0x0000000001300000-0x0000000001302000-memory.dmp

        memory/1164-75-0x00000000002D0000-0x0000000000304000-memory.dmp

        memory/1164-68-0x0000000001380000-0x0000000001381000-memory.dmp

        memory/1164-77-0x0000000000310000-0x0000000000311000-memory.dmp

        memory/1172-84-0x00000000012A0000-0x00000000012A1000-memory.dmp

        memory/1172-87-0x00000000011D0000-0x00000000011D1000-memory.dmp

        memory/1528-89-0x000007FEFB741000-0x000007FEFB743000-memory.dmp

        memory/1528-90-0x0000000001DA0000-0x0000000001DA1000-memory.dmp

        memory/1932-64-0x000000001B210000-0x000000001B212000-memory.dmp

        memory/1932-59-0x0000000000A90000-0x0000000000A91000-memory.dmp

        memory/1932-63-0x0000000000270000-0x0000000000271000-memory.dmp

        memory/1932-62-0x0000000000250000-0x000000000026E000-memory.dmp

        memory/1932-61-0x0000000000240000-0x0000000000241000-memory.dmp