Analysis

  • max time kernel
    148s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    13-02-2023 11:51

General

  • Target

    HK SEMI CORPORATION CO,,Ltd.js

  • Size

    4.6MB

  • MD5

    3cbcc574b184d5719059b21b9786bbf0

  • SHA1

    9ed29659b5b54cdf60cf2b9495224aec1a261e67

  • SHA256

    00b6a46542f80c34df42fe3d9e369eb7c39566e902e9ac92238dc90166446a6c

  • SHA512

    68d5c2e058f28c9f1760f40af8fce6b0f786a0ed4aa99cc86df227415c66688e6de1264929d937ed20d111d7551b7ec0944791a5753045ce821167b09ddac9c7

  • SSDEEP

    3072:2GRbdyiMKBDjY086keLyVXiQp7IayQ6Q/27SSi8s2ag6N8TiwzccqhWM307KIiWW:R06HV4dbI+eeHbESp

Malware Config

Signatures

  • STRRAT

    STRRAT is a remote access tool than can steal credentials and log keystrokes.

  • Vjw0rm

    Vjw0rm is a remote access trojan written in JavaScript.

  • Blocklisted process makes network request 12 IoCs
  • Drops startup file 3 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 42 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe "C:\Users\Admin\AppData\Local\Temp\HK SEMI CORPORATION CO,,Ltd.js"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1976
    • C:\Windows\System32\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\SrdqnzeXbF.js"
      2⤵
      • Blocklisted process makes network request
      • Drops startup file
      PID:972
    • C:\Program Files\Java\jre7\bin\javaw.exe
      "C:\Program Files\Java\jre7\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\zgwdeoqq.txt"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:608
      • C:\Program Files\Java\jre7\bin\java.exe
        "C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\zgwdeoqq.txt"
        3⤵
        • Drops startup file
        • Adds Run key to start application
        • Suspicious use of WriteProcessMemory
        PID:1464
        • C:\Windows\system32\cmd.exe
          cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\zgwdeoqq.txt"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:944
          • C:\Windows\system32\schtasks.exe
            schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\zgwdeoqq.txt"
            5⤵
            • Creates scheduled task(s)
            PID:1084
        • C:\Program Files\Java\jre7\bin\java.exe
          "C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\zgwdeoqq.txt"
          4⤵
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:1976
          • C:\Windows\system32\cmd.exe
            cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:268
          • C:\Windows\system32\cmd.exe
            cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:468
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list
              6⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:1856
          • C:\Windows\system32\cmd.exe
            cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1340
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list
              6⤵
                PID:1696
            • C:\Windows\system32\cmd.exe
              cmd.exe /c "wmic /node:localhost /namespace:'\\root\securitycenter' path antivirusproduct get displayname /format:list"
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:836
              • C:\Windows\System32\Wbem\WMIC.exe
                wmic /node:localhost /namespace:'\\root\securitycenter' path antivirusproduct get displayname /format:list
                6⤵
                  PID:608
      • C:\Windows\System32\Wbem\WMIC.exe
        wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:272

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Execution

      Scheduled Task

      1
      T1053

      Persistence

      Registry Run Keys / Startup Folder

      1
      T1060

      Scheduled Task

      1
      T1053

      Privilege Escalation

      Scheduled Task

      1
      T1053

      Defense Evasion

      Modify Registry

      1
      T1112

      Discovery

      System Information Discovery

      1
      T1082

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-3845472200-3839195424-595303356-1000\83aa4cc77f591dfc2374580bbd95f6ba_7725c12a-7257-458e-a47f-7029d9191548
        Filesize

        45B

        MD5

        c8366ae350e7019aefc9d1e6e6a498c6

        SHA1

        5731d8a3e6568a5f2dfbbc87e3db9637df280b61

        SHA256

        11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238

        SHA512

        33c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd

      • C:\Users\Admin\AppData\Roaming\SrdqnzeXbF.js
        Filesize

        346KB

        MD5

        4e73d37c3f3e7adab48a636d20e7b4a5

        SHA1

        b7148b18df8df7e731694043ceb2050e3463f99c

        SHA256

        7a4ae69336738bf3431e38c7a1abf0190f1f074b13447914cd42604c7174254e

        SHA512

        6a3565af24a0e8a4a2e046752ea0f1d966013d3e6bc10a755b3f13eb33c63487fef2698217e54f87d2c314d38760fe079004798d1c7b860b1960d75b5798b1b9

      • C:\Users\Admin\AppData\Roaming\lib\jna-5.5.0.jar
        Filesize

        1.4MB

        MD5

        acfb5b5fd9ee10bf69497792fd469f85

        SHA1

        0e0845217c4907822403912ad6828d8e0b256208

        SHA256

        b308faebfe4ed409de8410e0a632d164b2126b035f6eacff968d3908cafb4d9e

        SHA512

        e52575f58a195ceb3bd16b9740eadf5bc5b1d4d63c0734e8e5fd1d1776aa2d068d2e4c7173b83803f95f72c0a6759ae1c9b65773c734250d4cfcdf47a19f82aa

      • C:\Users\Admin\AppData\Roaming\lib\jna-platform-5.5.0.jar
        Filesize

        2.6MB

        MD5

        2f4a99c2758e72ee2b59a73586a2322f

        SHA1

        af38e7c4d0fc73c23ecd785443705bfdee5b90bf

        SHA256

        24d81621f82ac29fcdd9a74116031f5907a2343158e616f4573bbfa2434ae0d5

        SHA512

        b860459a0d3bf7ccb600a03aa1d2ac0358619ee89b2b96ed723541e182b6fdab53aefef7992acb4e03fca67aa47cbe3907b1e6060a60b57ed96c4e00c35c7494

      • C:\Users\Admin\AppData\Roaming\lib\sqlite-jdbc-3.14.2.1.jar
        Filesize

        4.1MB

        MD5

        b33387e15ab150a7bf560abdc73c3bec

        SHA1

        66b8075784131f578ef893fd7674273f709b9a4c

        SHA256

        2eae3dea1c3dde6104c49f9601074b6038ff6abcf3be23f4b56f6720a4f6a491

        SHA512

        25cfb0d6ce35d0bcb18527d3aa12c63ecb2d9c1b8b78805d1306e516c13480b79bb0d74730aa93bd1752f9ac2da9fdd51781c48844cea2fd52a06c62852c8279

      • C:\Users\Admin\AppData\Roaming\lib\system-hook-3.5.jar
        Filesize

        772KB

        MD5

        e1aa38a1e78a76a6de73efae136cdb3a

        SHA1

        c463da71871f780b2e2e5dba115d43953b537daf

        SHA256

        2ddda8af6faef8bde46acf43ec546603180bcf8dcb2e5591fff8ac9cd30b5609

        SHA512

        fee16fe9364926ec337e52f551fd62ed81984808a847de2fd68ff29b6c5da0dcc04ef6d8977f0fe675662a7d2ea1065cdcdd2a5259446226a7c7c5516bd7d60d

      • C:\Users\Admin\AppData\Roaming\zgwdeoqq.txt
        Filesize

        164KB

        MD5

        da535bbab93f526e10242ab516b0288b

        SHA1

        d8b7c7075828195a0c63850d226e2b01492536b4

        SHA256

        9323684aebe7748204540c226f533dc327074e3aa4b238970d9484a1c8abc426

        SHA512

        0d2025ab35e533d2ca1142006326c1573055560bea5b311fec5ddf129d5bce3be2778264e58bf183ee6fa9ee681cf3c652f20ab3aae789e96cb3796f7ed65af8

      • C:\Users\Admin\AppData\Roaming\zgwdeoqq.txt
        Filesize

        164KB

        MD5

        da535bbab93f526e10242ab516b0288b

        SHA1

        d8b7c7075828195a0c63850d226e2b01492536b4

        SHA256

        9323684aebe7748204540c226f533dc327074e3aa4b238970d9484a1c8abc426

        SHA512

        0d2025ab35e533d2ca1142006326c1573055560bea5b311fec5ddf129d5bce3be2778264e58bf183ee6fa9ee681cf3c652f20ab3aae789e96cb3796f7ed65af8

      • C:\Users\Admin\lib\jna-5.5.0.jar
        Filesize

        1.4MB

        MD5

        acfb5b5fd9ee10bf69497792fd469f85

        SHA1

        0e0845217c4907822403912ad6828d8e0b256208

        SHA256

        b308faebfe4ed409de8410e0a632d164b2126b035f6eacff968d3908cafb4d9e

        SHA512

        e52575f58a195ceb3bd16b9740eadf5bc5b1d4d63c0734e8e5fd1d1776aa2d068d2e4c7173b83803f95f72c0a6759ae1c9b65773c734250d4cfcdf47a19f82aa

      • C:\Users\Admin\lib\jna-platform-5.5.0.jar
        Filesize

        2.6MB

        MD5

        2f4a99c2758e72ee2b59a73586a2322f

        SHA1

        af38e7c4d0fc73c23ecd785443705bfdee5b90bf

        SHA256

        24d81621f82ac29fcdd9a74116031f5907a2343158e616f4573bbfa2434ae0d5

        SHA512

        b860459a0d3bf7ccb600a03aa1d2ac0358619ee89b2b96ed723541e182b6fdab53aefef7992acb4e03fca67aa47cbe3907b1e6060a60b57ed96c4e00c35c7494

      • C:\Users\Admin\lib\sqlite-jdbc-3.14.2.1.jar
        Filesize

        4.1MB

        MD5

        b33387e15ab150a7bf560abdc73c3bec

        SHA1

        66b8075784131f578ef893fd7674273f709b9a4c

        SHA256

        2eae3dea1c3dde6104c49f9601074b6038ff6abcf3be23f4b56f6720a4f6a491

        SHA512

        25cfb0d6ce35d0bcb18527d3aa12c63ecb2d9c1b8b78805d1306e516c13480b79bb0d74730aa93bd1752f9ac2da9fdd51781c48844cea2fd52a06c62852c8279

      • C:\Users\Admin\lib\system-hook-3.5.jar
        Filesize

        772KB

        MD5

        e1aa38a1e78a76a6de73efae136cdb3a

        SHA1

        c463da71871f780b2e2e5dba115d43953b537daf

        SHA256

        2ddda8af6faef8bde46acf43ec546603180bcf8dcb2e5591fff8ac9cd30b5609

        SHA512

        fee16fe9364926ec337e52f551fd62ed81984808a847de2fd68ff29b6c5da0dcc04ef6d8977f0fe675662a7d2ea1065cdcdd2a5259446226a7c7c5516bd7d60d

      • C:\Users\Admin\zgwdeoqq.txt
        Filesize

        164KB

        MD5

        da535bbab93f526e10242ab516b0288b

        SHA1

        d8b7c7075828195a0c63850d226e2b01492536b4

        SHA256

        9323684aebe7748204540c226f533dc327074e3aa4b238970d9484a1c8abc426

        SHA512

        0d2025ab35e533d2ca1142006326c1573055560bea5b311fec5ddf129d5bce3be2778264e58bf183ee6fa9ee681cf3c652f20ab3aae789e96cb3796f7ed65af8

      • \Users\Admin\AppData\Local\Temp\jna-63116079\jna1906488273679286873.dll
        Filesize

        241KB

        MD5

        e02979ecd43bcc9061eb2b494ab5af50

        SHA1

        3122ac0e751660f646c73b10c4f79685aa65c545

        SHA256

        a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a

        SHA512

        1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

      • memory/268-109-0x0000000000000000-mapping.dmp
      • memory/272-110-0x0000000000000000-mapping.dmp
      • memory/468-111-0x0000000000000000-mapping.dmp
      • memory/608-68-0x00000000022C0000-0x00000000052C0000-memory.dmp
        Filesize

        48.0MB

      • memory/608-57-0x000007FEFB6D1000-0x000007FEFB6D3000-memory.dmp
        Filesize

        8KB

      • memory/608-56-0x0000000000000000-mapping.dmp
      • memory/608-116-0x0000000000000000-mapping.dmp
      • memory/836-115-0x0000000000000000-mapping.dmp
      • memory/944-89-0x0000000000000000-mapping.dmp
      • memory/972-54-0x0000000000000000-mapping.dmp
      • memory/1084-92-0x0000000000000000-mapping.dmp
      • memory/1340-113-0x0000000000000000-mapping.dmp
      • memory/1464-84-0x0000000002080000-0x0000000005080000-memory.dmp
        Filesize

        48.0MB

      • memory/1464-72-0x0000000000000000-mapping.dmp
      • memory/1696-114-0x0000000000000000-mapping.dmp
      • memory/1856-112-0x0000000000000000-mapping.dmp
      • memory/1976-100-0x0000000002150000-0x0000000005150000-memory.dmp
        Filesize

        48.0MB

      • memory/1976-90-0x0000000000000000-mapping.dmp
      • memory/1976-118-0x0000000002150000-0x0000000005150000-memory.dmp
        Filesize

        48.0MB