Analysis

  • max time kernel
    88s
  • max time network
    23s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    23/09/2021, 11:03

General

  • Target
    48f75bdbc25c9cc7df1fe7837a81bf35.exe
  • Size 192KB
  • Sample210923-m5ppnsabb3
  • SHA256 397c1235b17a6b14fa61e480e59cf0d6c7d2cf7d633ae1c3957f82c23c985b95
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Signatures

  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Checks QEMU agent file 2 TTPs 1 IoCs

    Checks presence of QEMU agent, possibly to detect virtualization.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\48f75bdbc25c9cc7df1fe7837a81bf35.exe
    "C:\Users\Admin\AppData\Local\Temp\48f75bdbc25c9cc7df1fe7837a81bf35.exe"
    1⤵
    • Checks QEMU agent file
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1356
    • C:\Users\Admin\AppData\Local\Temp\48f75bdbc25c9cc7df1fe7837a81bf35.exe
      "C:\Users\Admin\AppData\Local\Temp\48f75bdbc25c9cc7df1fe7837a81bf35.exe"
      2⤵
        PID:1088

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/1088-61-0x0000000000400000-0x0000000000553000-memory.dmp

          memory/1088-63-0x00000000001B0000-0x00000000002B0000-memory.dmp

          memory/1356-55-0x0000000000440000-0x0000000000454000-memory.dmp

          memory/1356-57-0x00000000779F0000-0x0000000077B99000-memory.dmp

          memory/1356-58-0x0000000077BD0000-0x0000000077D50000-memory.dmp

          memory/1356-59-0x0000000076A81000-0x0000000076A83000-memory.dmp

          memory/1356-62-0x0000000077BE0000-0x0000000077CB6000-memory.dmp