Analysis

  • max time kernel
    290s
  • max time network
    301s
  • platform
    windows10-1703_x64
  • resource
    win10-20240221-en
  • resource tags

    arch:x64arch:x86image:win10-20240221-enlocale:en-usos:windows10-1703-x64system
  • submitted
    28/03/2024, 09:24

General

  • Target
    LoaderVNC.exe
  • Size 5.2MB
  • Sample240328-ldevqafa83
  • SHA256 6a69e0ebb331aa21614ccc0c4028b5cde242f0710300fe7b441b2017c71a8e16
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Detect ZGRat V1 36 IoCs
  • PureLog Stealer

    PureLog Stealer is an infostealer written in C#.

  • PureLog Stealer payload 2 IoCs
  • ZGRat

    ZGRat is remote access trojan written in C#.

  • Executes dropped EXE 1 IoCs
  • 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).

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\LoaderVNC.exe
    "C:\Users\Admin\AppData\Local\Temp\LoaderVNC.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:716
    • C:\Users\Admin\AppData\Local\Temp\vncKript.exe
      "C:\Users\Admin\AppData\Local\Temp\vncKript.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:4584
    • C:\Users\Admin\AppData\Local\Temp\LoaderVNC.exe
      C:\Users\Admin\AppData\Local\Temp\LoaderVNC.exe
      2⤵
        PID:2764
      • C:\Users\Admin\AppData\Local\Temp\LoaderVNC.exe
        C:\Users\Admin\AppData\Local\Temp\LoaderVNC.exe
        2⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:324
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe -ExecutionPolicy Bypass -WindowStyle Hidden -NoProfile -enc QQBkAGQALQBNAHAAUAByAGUAZgBlAHIAZQBuAGMAZQAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEMAOgBcAFUAcwBlAHIAcwBcAEEAZABtAGkAbgBcAEEAcABwAEQAYQB0AGEAXABMAG8AYwBhAGwAOwAgAEEAZABkAC0ATQBwAFAAcgBlAGYAZQByAGUAbgBjAGUAIAAtAEUAeABjAGwAdQBzAGkAbwBuAFAAcgBvAGMAZQBzAHMAIABDAHUAcgByAGUAbgB0AC4AZQB4AGUAOwA=
      1⤵
        PID:3948
      • C:\Program Files\Mozilla Firefox\firefox.exe
        "C:\Program Files\Mozilla Firefox\firefox.exe"
        1⤵
        • Suspicious use of WriteProcessMemory
        PID:4640
        • C:\Program Files\Mozilla Firefox\firefox.exe
          "C:\Program Files\Mozilla Firefox\firefox.exe"
          2⤵
          • Checks processor information in registry
          PID:520
          • C:\Program Files\Mozilla Firefox\firefox.exe
            "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="520.0.40188906\712535620" -parentBuildID 20221007134813 -prefsHandle 1716 -prefMapHandle 1704 -prefsLen 20747 -prefMapSize 233444 -appDir "C:\Program Files\Mozilla Firefox\browser" - {07eb8d0e-deaa-49d5-b048-da6fc00525d5} 520 "\\.\pipe\gecko-crash-server-pipe.520" 1800 180ba3ec458 gpu
            3⤵
              PID:4288
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="520.1.724979363\1865302103" -parentBuildID 20221007134813 -prefsHandle 2156 -prefMapHandle 2152 -prefsLen 20828 -prefMapSize 233444 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {96023f3d-a46a-46bf-ac92-201c4165c446} 520 "\\.\pipe\gecko-crash-server-pipe.520" 2168 180ba2fa458 socket
              3⤵
                PID:2796
              • C:\Program Files\Mozilla Firefox\firefox.exe
                "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="520.2.1123977967\149688903" -childID 1 -isForBrowser -prefsHandle 2936 -prefMapHandle 2932 -prefsLen 20931 -prefMapSize 233444 -jsInitHandle 1264 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {6de837d7-b5b2-48d2-85f0-723a1c9acc7a} 520 "\\.\pipe\gecko-crash-server-pipe.520" 2948 180be59eb58 tab
                3⤵
                  PID:2404
                • C:\Program Files\Mozilla Firefox\firefox.exe
                  "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="520.3.1962699240\1592482300" -childID 2 -isForBrowser -prefsHandle 3360 -prefMapHandle 3356 -prefsLen 26109 -prefMapSize 233444 -jsInitHandle 1264 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {26a7ead9-17a7-4510-9737-c3336313b739} 520 "\\.\pipe\gecko-crash-server-pipe.520" 3372 180a802ea58 tab
                  3⤵
                    PID:4504
                  • C:\Program Files\Mozilla Firefox\firefox.exe
                    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="520.4.1122960903\1607860451" -childID 3 -isForBrowser -prefsHandle 4540 -prefMapHandle 4544 -prefsLen 26247 -prefMapSize 233444 -jsInitHandle 1264 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {3acb63c2-f430-44a0-8669-1ca0c7bc19b0} 520 "\\.\pipe\gecko-crash-server-pipe.520" 4532 180bf910e58 tab
                    3⤵
                      PID:2348
                    • C:\Program Files\Mozilla Firefox\firefox.exe
                      "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="520.5.1040496354\372999158" -childID 4 -isForBrowser -prefsHandle 4792 -prefMapHandle 4796 -prefsLen 26328 -prefMapSize 233444 -jsInitHandle 1264 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {27a0d16a-5478-4080-9093-9dbeece5806d} 520 "\\.\pipe\gecko-crash-server-pipe.520" 4540 180a8067558 tab
                      3⤵
                        PID:4328
                      • C:\Program Files\Mozilla Firefox\firefox.exe
                        "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="520.6.1104328824\1896717857" -childID 5 -isForBrowser -prefsHandle 4944 -prefMapHandle 4948 -prefsLen 26328 -prefMapSize 233444 -jsInitHandle 1264 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {9dee807a-bea7-487e-b451-a01b045d47f2} 520 "\\.\pipe\gecko-crash-server-pipe.520" 4936 180c1041658 tab
                        3⤵
                          PID:2812
                        • C:\Program Files\Mozilla Firefox\firefox.exe
                          "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="520.7.645920501\439060601" -childID 6 -isForBrowser -prefsHandle 4816 -prefMapHandle 5112 -prefsLen 26328 -prefMapSize 233444 -jsInitHandle 1264 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {1c00d1e6-7df3-47b2-8810-88386c69ab3e} 520 "\\.\pipe\gecko-crash-server-pipe.520" 4680 180c10c9d58 tab
                          3⤵
                            PID:3280

                      Network

                            MITRE ATT&CK Enterprise v15

                            Replay Monitor

                            Loading Replay Monitor...

                            Downloads

                            LoaderVNC.exe.log

                            • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\LoaderVNC.exe.log
                            • Size 927B
                            • SHA256 72653cc5191f40cf26bcabcb5e0e41e53f23463f725007f74da78e36f9ec1522
                            • MD5 SHA1 SHA512

                            vncKript.exe

                            • Path C:\Users\Admin\AppData\Local\Temp\vncKript.exe
                            • Size 2.6MB
                            • SHA256 e4a91db9e43655931fd3926ec00dbe8a063fbe0d3f0af7d902fd3b9d8281fb3d
                            • MD5 SHA1 SHA512 SSDEEP

                            data.safe.bin

                            • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\0htfzopy.default-release\datareporting\glean\db\data.safe.bin
                            • Size 2KB
                            • SHA256 e52500581a09b6ca5bc45d75978f83312acb3c3740096797bf59ec3a914f3867
                            • MD5 SHA1 SHA512

                            42288711-8e32-4a57-a0b4-a3fd73452070

                            • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\0htfzopy.default-release\datareporting\glean\pending_pings\42288711-8e32-4a57-a0b4-a3fd73452070
                            • Size 10KB
                            • SHA256 a0cfdd026a203312dc47cfa80d4192beaca4acc143d2b7c7b4ae2d9297a9d12d
                            • MD5 SHA1 SHA512 SSDEEP

                            a3999e55-307a-4caa-b859-10f19ae7e444

                            • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\0htfzopy.default-release\datareporting\glean\pending_pings\a3999e55-307a-4caa-b859-10f19ae7e444
                            • Size 746B
                            • SHA256 03f986a8940b8a7693e0d4f1bca73aceec1fe6cebedcef03cf6d4d2754a7b77b
                            • MD5 SHA1 SHA512

                            prefs-1.js

                            • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\0htfzopy.default-release\prefs-1.js
                            • Size 6KB
                            • SHA256 9e01518a2ea75bf1cc02f2f8f679f8bf5efdf00e0150a951597ec25c3c1fe55d
                            • MD5 SHA1 SHA512 SSDEEP

                            prefs.js

                            • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\0htfzopy.default-release\prefs.js
                            • Size 6KB
                            • SHA256 038561340d114e76b36839ea59a97cae2f55be9d0d2cac877425efd5f4b4ddb5
                            • MD5 SHA1 SHA512 SSDEEP

                            3870112724rsegmnoittet-es.sqlite

                            • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\0htfzopy.default-release\storage\permanent\chrome\idb\3870112724rsegmnoittet-es.sqlite
                            • Size 184KB
                            • SHA256 36fec264a3999016598d218d9cfd9d30026833d1855f5dca3c54bb4d5bd48ede
                            • MD5 SHA1 SHA512 SSDEEP

                            memory/324-9439-0x0000000006230000-0x0000000006284000-memory.dmp

                            memory/324-9301-0x00000000060C0000-0x0000000006126000-memory.dmp

                            memory/324-9286-0x00000000057F0000-0x0000000005846000-memory.dmp

                            memory/324-7627-0x00000000059C0000-0x00000000059D0000-memory.dmp

                            memory/324-7339-0x0000000073640000-0x0000000073D2E000-memory.dmp

                            memory/324-4803-0x00000000059D0000-0x0000000005AB8000-memory.dmp

                            memory/324-4800-0x0000000073640000-0x0000000073D2E000-memory.dmp

                            memory/324-4802-0x00000000059C0000-0x00000000059D0000-memory.dmp

                            memory/324-9475-0x0000000073640000-0x0000000073D2E000-memory.dmp

                            memory/324-4798-0x0000000000400000-0x000000000049C000-memory.dmp

                            memory/716-28-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/716-30-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/716-34-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/716-36-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/716-38-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/716-40-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/716-42-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/716-44-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/716-46-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/716-48-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/716-50-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/716-52-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/716-54-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/716-56-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/716-58-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/716-60-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/716-62-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/716-64-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/716-66-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/716-68-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/716-1128-0x0000000073640000-0x0000000073D2E000-memory.dmp

                            memory/716-1262-0x0000000005260000-0x0000000005270000-memory.dmp

                            memory/716-4783-0x0000000000D40000-0x0000000000D41000-memory.dmp

                            memory/716-4784-0x0000000009500000-0x0000000009838000-memory.dmp

                            memory/716-4785-0x00000000010E0000-0x000000000112C000-memory.dmp

                            memory/716-32-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/716-4791-0x00000000072B0000-0x00000000077AE000-memory.dmp

                            memory/716-0-0x0000000073640000-0x0000000073D2E000-memory.dmp

                            memory/716-2-0x0000000005260000-0x0000000005270000-memory.dmp

                            memory/716-1-0x00000000003F0000-0x000000000092C000-memory.dmp

                            memory/716-26-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/716-3-0x00000000063A0000-0x0000000006896000-memory.dmp

                            memory/716-24-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/716-22-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/716-4799-0x0000000073640000-0x0000000073D2E000-memory.dmp

                            memory/716-4-0x00000000068A0000-0x0000000006D90000-memory.dmp

                            memory/716-20-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/716-5-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/716-6-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/716-18-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/716-16-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/716-14-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/716-12-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/716-10-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/716-8-0x00000000068A0000-0x0000000006D8A000-memory.dmp

                            memory/4584-7059-0x00000000054D0000-0x00000000054E0000-memory.dmp

                            memory/4584-6503-0x0000000073640000-0x0000000073D2E000-memory.dmp

                            memory/4584-4804-0x00000000058F0000-0x0000000005B44000-memory.dmp

                            memory/4584-4801-0x0000000005620000-0x000000000587A000-memory.dmp

                            memory/4584-4795-0x0000000073640000-0x0000000073D2E000-memory.dmp

                            memory/4584-4793-0x0000000000A90000-0x0000000000D30000-memory.dmp