Analysis

  • max time kernel
    130s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    24/08/2022, 10:31

General

  • Target
    LIBRA Elektronik GmbH.PDF.exe
  • Size 1.9MB
  • Sample220824-mkcvdacbcp
  • SHA256 a5f6b5b6909b3b40d933857cc42d284b743ce9a69ca2baaa5e75dcc4e1c15a19
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.6

C2
  • 37.0.14.196:6606

  • 37.0.14.196:7707

  • 37.0.14.196:8808

  • 37.0.14.196:2050

Mutex
  • zosipyowgjjotojfi

Attributes
  • delay

    5

  • install

    false

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers.

  • Async RAT payload 6 IoCs
  • Loads dropped DLL 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\LIBRA Elektronik GmbH.PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\LIBRA Elektronik GmbH.PDF.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1772
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2044
  • C:\Windows\system32\wbem\WmiApSrv.exe
    C:\Windows\system32\wbem\WmiApSrv.exe
    1⤵
      PID:768

    Network

          MITRE ATT&CK Matrix

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          InternalApplicationIdentit.dll

          • Path \Users\Admin\AppData\Roaming\InternalApplicationIdentit.dll
          • Size 670KB
          • SHA256 4e1e636d7daf18d321aba24c57564b901affc12ddfe458622f93dc63740f1487
          • MD5 SHA1 SHA512 SSDEEP

          InternalApplicationIdentit.dll

          • Path \Users\Admin\AppData\Roaming\InternalApplicationIdentit.dll
          • Size 670KB
          • SHA256 4e1e636d7daf18d321aba24c57564b901affc12ddfe458622f93dc63740f1487
          • MD5 SHA1 SHA512 SSDEEP

          memory/1772-54-0x0000000001380000-0x0000000001578000-memory.dmp

          memory/1772-55-0x0000000075631000-0x0000000075633000-memory.dmp

          memory/1772-58-0x0000000005A80000-0x0000000005B2E000-memory.dmp

          memory/2044-62-0x0000000000400000-0x0000000000412000-memory.dmp

          memory/2044-60-0x0000000000400000-0x0000000000412000-memory.dmp

          memory/2044-59-0x0000000000400000-0x0000000000412000-memory.dmp

          memory/2044-63-0x0000000000400000-0x0000000000412000-memory.dmp

          memory/2044-64-0x0000000000400000-0x0000000000412000-memory.dmp

          memory/2044-67-0x0000000000400000-0x0000000000412000-memory.dmp

          memory/2044-69-0x0000000000400000-0x0000000000412000-memory.dmp