Analysis

  • max time kernel
    150s
  • max time network
    50s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    06-09-2022 12:59

General

  • Target

    tmp.exe

  • Size

    37KB

  • MD5

    b5930c6fbf0ecde4de2ba77415b97e18

  • SHA1

    67cab99dc14822289f9b8d1f0fb0e9d73ff45825

  • SHA256

    fe2a9057323a5a5d47a4ab3cf9f4f9f86037b395c440da7bfb1e4164bc10abc3

  • SHA512

    63140881d7b03db395608b1fe095b0989aa2d87d017ae63eea34c8b3e04c3274ccc7ee31a4505c8334af1300844c4aec30a6a25dc692a34ec699b728a85620ea

  • SSDEEP

    384:O9kt7+7uIb00ERLA6m8KXAX3H3JGm9bN1v5N9EJqgxWUrxMKQ4XyY:vNTIcI8tX9B55gqgxWFKQiH

Malware Config

Signatures

  • Detects Smokeloader packer 4 IoCs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmp.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1600
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMgAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:780
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
      C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:1504

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/780-61-0x000000006ED70000-0x000000006F31B000-memory.dmp

    Filesize

    5.7MB

  • memory/780-57-0x0000000000000000-mapping.dmp

  • memory/780-59-0x000000006ED70000-0x000000006F31B000-memory.dmp

    Filesize

    5.7MB

  • memory/780-60-0x000000006ED70000-0x000000006F31B000-memory.dmp

    Filesize

    5.7MB

  • memory/1208-70-0x000007FEFA860000-0x000007FEFA9A3000-memory.dmp

    Filesize

    1.3MB

  • memory/1208-71-0x000007FF31EF0000-0x000007FF31EFA000-memory.dmp

    Filesize

    40KB

  • memory/1504-63-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/1504-62-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/1504-65-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/1504-66-0x0000000000402E0F-mapping.dmp

  • memory/1504-68-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/1504-69-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/1600-54-0x0000000000C60000-0x0000000000C6E000-memory.dmp

    Filesize

    56KB

  • memory/1600-55-0x00000000752B1000-0x00000000752B3000-memory.dmp

    Filesize

    8KB

  • memory/1600-56-0x0000000005AC0000-0x0000000005CF4000-memory.dmp

    Filesize

    2.2MB