Analysis

  • max time kernel
    120s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    18-09-2023 05:12

General

  • Target

    lpk.dll

  • Size

    43KB

  • MD5

    78311085e5cd3f86a7243d628bfacf95

  • SHA1

    ba7c78590f1e940f51afd2945674d904a814f976

  • SHA256

    7ced46b02becde70fc51e05e88f6261a1745e7cfaf869007e6b305fd8e0d26ca

  • SHA512

    773def76b44722e96d45cfd84d8773159331409923993bb67c217848f582bb456327580554c39d82965376b29d25c1d58b1ed4da734256661f97adf1f3ffacfd

  • SSDEEP

    768:695fppO8mYzyN7c9SKiGsU8fKKVuJvSHlNyHg95fpp:45PGN7c9SKiGN8fzplNyHm5

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\lpk.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1732
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\lpk.dll,#1
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2448
      • C:\Users\Admin\AppData\Local\Temp\hrl3498.tmp
        C:\Users\Admin\AppData\Local\Temp\hrl3498.tmp
        3⤵
        • Executes dropped EXE
        • Drops file in System32 directory
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1264
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\hrl3498.tmp > nul
          4⤵
            PID:2796
    • C:\Windows\SysWOW64\kkaaya.exe
      C:\Windows\SysWOW64\kkaaya.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:2284
      • C:\Windows\SysWOW64\svchost.exe
        svchost.exe
        2⤵
          PID:2652

      Network

      MITRE ATT&CK Matrix

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Temp\hrl3498.tmp

        Filesize

        36KB

        MD5

        eb4ddda9e715be4be7423fc87e42c1c6

        SHA1

        ec541ac7cfcd55f37758f9a33137e19257307c11

        SHA256

        842ee71c9e4b9e8b30d8471eb3632f3f4d1b29796a08c0e804d4fcf89a53b1b9

        SHA512

        8b1091a412c81bc9e143f838ab1b589c110e83bee9d5a45c0cdf79aea868e2a31e5713625db513ff74a923732ee1bceafcce8b51d83e79f7d013ca46d7967c4e

      • C:\Users\Admin\AppData\Local\Temp\hrl3498.tmp

        Filesize

        36KB

        MD5

        eb4ddda9e715be4be7423fc87e42c1c6

        SHA1

        ec541ac7cfcd55f37758f9a33137e19257307c11

        SHA256

        842ee71c9e4b9e8b30d8471eb3632f3f4d1b29796a08c0e804d4fcf89a53b1b9

        SHA512

        8b1091a412c81bc9e143f838ab1b589c110e83bee9d5a45c0cdf79aea868e2a31e5713625db513ff74a923732ee1bceafcce8b51d83e79f7d013ca46d7967c4e

      • C:\Users\Admin\AppData\Local\Temp\hrl3498.tmp

        Filesize

        36KB

        MD5

        eb4ddda9e715be4be7423fc87e42c1c6

        SHA1

        ec541ac7cfcd55f37758f9a33137e19257307c11

        SHA256

        842ee71c9e4b9e8b30d8471eb3632f3f4d1b29796a08c0e804d4fcf89a53b1b9

        SHA512

        8b1091a412c81bc9e143f838ab1b589c110e83bee9d5a45c0cdf79aea868e2a31e5713625db513ff74a923732ee1bceafcce8b51d83e79f7d013ca46d7967c4e

      • C:\Windows\SysWOW64\kkaaya.exe

        Filesize

        36KB

        MD5

        eb4ddda9e715be4be7423fc87e42c1c6

        SHA1

        ec541ac7cfcd55f37758f9a33137e19257307c11

        SHA256

        842ee71c9e4b9e8b30d8471eb3632f3f4d1b29796a08c0e804d4fcf89a53b1b9

        SHA512

        8b1091a412c81bc9e143f838ab1b589c110e83bee9d5a45c0cdf79aea868e2a31e5713625db513ff74a923732ee1bceafcce8b51d83e79f7d013ca46d7967c4e

      • C:\Windows\SysWOW64\kkaaya.exe

        Filesize

        36KB

        MD5

        eb4ddda9e715be4be7423fc87e42c1c6

        SHA1

        ec541ac7cfcd55f37758f9a33137e19257307c11

        SHA256

        842ee71c9e4b9e8b30d8471eb3632f3f4d1b29796a08c0e804d4fcf89a53b1b9

        SHA512

        8b1091a412c81bc9e143f838ab1b589c110e83bee9d5a45c0cdf79aea868e2a31e5713625db513ff74a923732ee1bceafcce8b51d83e79f7d013ca46d7967c4e

      • \Users\Admin\AppData\Local\Temp\hrl3498.tmp

        Filesize

        36KB

        MD5

        eb4ddda9e715be4be7423fc87e42c1c6

        SHA1

        ec541ac7cfcd55f37758f9a33137e19257307c11

        SHA256

        842ee71c9e4b9e8b30d8471eb3632f3f4d1b29796a08c0e804d4fcf89a53b1b9

        SHA512

        8b1091a412c81bc9e143f838ab1b589c110e83bee9d5a45c0cdf79aea868e2a31e5713625db513ff74a923732ee1bceafcce8b51d83e79f7d013ca46d7967c4e

      • \Users\Admin\AppData\Local\Temp\hrl3498.tmp

        Filesize

        36KB

        MD5

        eb4ddda9e715be4be7423fc87e42c1c6

        SHA1

        ec541ac7cfcd55f37758f9a33137e19257307c11

        SHA256

        842ee71c9e4b9e8b30d8471eb3632f3f4d1b29796a08c0e804d4fcf89a53b1b9

        SHA512

        8b1091a412c81bc9e143f838ab1b589c110e83bee9d5a45c0cdf79aea868e2a31e5713625db513ff74a923732ee1bceafcce8b51d83e79f7d013ca46d7967c4e

      • memory/2652-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2652-14-0x0000000000400000-0x000000000040C000-memory.dmp

        Filesize

        48KB

      • memory/2652-16-0x0000000000400000-0x000000000040C000-memory.dmp

        Filesize

        48KB

      • memory/2652-17-0x00000000004A0000-0x00000000004A0000-memory.dmp