Analysis

  • max time kernel
    121s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20250207-en
  • resource tags

    arch:x64arch:x86image:win7-20250207-enlocale:en-usos:windows7-x64system
  • submitted
    25/03/2025, 10:02

General

  • Target

    Nw-Inst64.exe

  • Size

    1.8MB

  • MD5

    3386e2abdfb0d9549bfba2cce6ca7689

  • SHA1

    ed6cb1b6d742f644ea2d1450c84a715d0b342d5c

  • SHA256

    6a4c87064969595078355dae42918fc19c3b71f422d6b5af9cee50a2af2d7b88

  • SHA512

    8f5af4ba0f985ef0b2ebb0a1518f07ad39feac4c355587fa4b1db093d8f763bff4484488a7692550fa458499af696dc2d09c54266a7a2ecfe1340de97eacf8de

  • SSDEEP

    49152:TRWp/PzUuHrGdkuxEiRMmWqf2/wzfUMrf5yfdoP+krDDjJOeZs:TEJPzXHrGdkuWJmWZ4CfdoPhXJOk

Malware Config

Extracted

Family

xworm

C2

89.39.121.169:9000

Attributes
  • Install_directory

    %AppData%

  • install_file

    RunShell.exe

Signatures

  • DcRat

    DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

  • Dcrat family
  • Detect Xworm Payload 2 IoCs
  • StormKitty

    StormKitty is an open source info stealer written in C#.

  • StormKitty payload 2 IoCs
  • Stormkitty family
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Xworm family
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 7 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Looks up external IP address via web service 3 IoCs

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

  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Runs ping.exe 1 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 48 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Nw-Inst64.exe
    "C:\Users\Admin\AppData\Local\Temp\Nw-Inst64.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2180
    • C:\Users\Admin\AppData\Local\Temp\XClient.exe
      "C:\Users\Admin\AppData\Local\Temp\XClient.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2220
    • C:\Users\Admin\AppData\Local\Temp\Build.exe
      "C:\Users\Admin\AppData\Local\Temp\Build.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2552
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2552 -s 1084
        3⤵
        • Loads dropped DLL
        • Program crash
        PID:2992
    • C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe
      "C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3036
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\WinnetCommonSvc\EF1rb20B7Zp52f5Q8odTU.vbe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2908
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c ""C:\WinnetCommonSvc\ckg6ORaGrHhdrhoaDEIfOHU33jMcFfgqQelkNCXcy5pLINkbo7vRcc.bat" "
          4⤵
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2844
          • C:\WinnetCommonSvc\fontWinnet.exe
            "C:\WinnetCommonSvc/fontWinnet.exe"
            5⤵
            • Executes dropped EXE
            • Drops file in System32 directory
            • Drops file in Program Files directory
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:2692
            • C:\Windows\System32\cmd.exe
              "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\JGyOG7QWwi.bat"
              6⤵
              • Suspicious use of WriteProcessMemory
              PID:2656
              • C:\Windows\system32\chcp.com
                chcp 65001
                7⤵
                  PID:3028
                • C:\Windows\system32\PING.EXE
                  ping -n 10 localhost
                  7⤵
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:2848
                • C:\WinnetCommonSvc\fontWinnet.exe
                  "C:\WinnetCommonSvc\fontWinnet.exe"
                  7⤵
                  • Executes dropped EXE
                  • Suspicious use of AdjustPrivilegeToken
                  • Suspicious use of WriteProcessMemory
                  PID:2508
                  • C:\Windows\System32\cmd.exe
                    "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\Pbn0SniZDX.bat"
                    8⤵
                    • Suspicious use of WriteProcessMemory
                    PID:2268
                    • C:\Windows\system32\chcp.com
                      chcp 65001
                      9⤵
                        PID:1532
                      • C:\Windows\system32\PING.EXE
                        ping -n 10 localhost
                        9⤵
                        • System Network Configuration Discovery: Internet Connection Discovery
                        • Runs ping.exe
                        PID:1604

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\MSOCache\All Users\1610b97d3ab4a7

        Filesize

        894B

        MD5

        cf7108d91aaa21ef7d1acd200a852791

        SHA1

        de998bdb29bfa346e0ae0bc45901830a2e210f3b

        SHA256

        89abb0191dd33854a4f596e23e071a4961515545eef531f5d275eb93c825d489

        SHA512

        1f665500a331c6d7f8217a1769999fcefe05b6f8a90aaa25cb41d36fae4677b60e8f3ed5f6e8e44a12cc7388ba0d587b41d826b575368733ce3a9191bc92d14b

      • C:\Program Files (x86)\Microsoft Synchronization Services\ADO.NET\v1.0\56085415360792

        Filesize

        97B

        MD5

        d1aabe9d5d080bd31cf12b9815aa6066

        SHA1

        dee0799fb7046a72126e104d96e71c41d6ea1b0f

        SHA256

        bba5ca1271caebb5f2d7c68820702edb83eefc45c3d3b8419ceb1ca9ce69c1d6

        SHA512

        544ec99e6c72ceecdc33cb5abbb1906f2dcef7d9b945bcc44088c1ba624d04674a771f15cbce8410c39fc783f57780a98c256b89c81ec74a854d8643078c53f0

      • C:\Recovery\8490d022-e5e1-11ef-8fd8-4a893fa2fe1c\f3b6ecef712a24

        Filesize

        530B

        MD5

        3d4fae3aa13c067c2d155f16c91dfebc

        SHA1

        bcceda94872d9e29a08461a6adfbfc83ad984827

        SHA256

        4d08e0aeb314a1de977168f044b6f59a830c3366ad5df55f76413c4dd6a01a8e

        SHA512

        c7fe931b333f5324049f106ac73fe0b7c17e1464db37344b4e50bf0303f102e510420d1c8dc7f6b206a8410cf270ed30dbd5cf1c3fb76459dd59315137f86543

      • C:\Users\Admin\AppData\Local\Temp\Build.exe

        Filesize

        250KB

        MD5

        b8f3934b55afbaa069717cd2e2eda6dd

        SHA1

        b33071c576f2637bd679002f01ca68e4df5112ec

        SHA256

        7cd58601d62de54c16bf279d2eb477a0e5b85f62cbe387268c1bec578db2a1e3

        SHA512

        2bab25ed6f190e56a96986400e5004956d44e3c9fe6e95e0b6540e503ad232ed3c08c85aaf3926a7bab3041fdbe64e363785c07fce9c011fc09abf2c39fde0c1

      • C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe

        Filesize

        2.2MB

        MD5

        730239632db99d16b9f2656950408bcc

        SHA1

        ae877e836becf0b7727cf61c0277446c1c5ed381

        SHA256

        6dbcdb70833bb9ac5656887e6eae082ade4d197bcf6516c70e10ab196a23d292

        SHA512

        bd3b2973c54ee9754f19ef5eba73d9252de285c5d574611b01db0ea3f0c3c145686e319dc2a9f6b8aff94728eb1bfb8485a98152175cca5deed52b6318c16da5

      • C:\Users\Admin\AppData\Local\Temp\JGyOG7QWwi.bat

        Filesize

        161B

        MD5

        38391754138d21656a9a2b09364fc944

        SHA1

        207a81a8c3265872f18c8aeb509c34f4586b37e6

        SHA256

        0af09acacc0c6105ad2f39aa65876ef403d5320f246a34590e7f1aa86492ad4f

        SHA512

        70bee0c11972710a1b3238919e9491b70e3ede41522b52206386a6629e02ea2a8d7a32be0017639c491d9ed6dcd3c0f4d68210482730a04f555512066862a6aa

      • C:\Users\Admin\AppData\Local\Temp\Pbn0SniZDX.bat

        Filesize

        215B

        MD5

        22f18908879a32c3e648fc1fe39a96b5

        SHA1

        4d54cd7e47e08a85ec8360eec3e2c2b2c5d27400

        SHA256

        17820e7493cc11ccdbdb1930ff99f7ddb1712c306b7be31c0edd8cc5a76292a9

        SHA512

        33353f3b18bd66a11ea977ef0412e2744d12fd1ec5bf8cbcd5b6ac2d4d7f88576912a5c18529c0d5358a321091c48f3b613ecbb0d9df98efdebcd36e23adb1e1

      • C:\Users\Admin\AppData\Local\Temp\XClient.exe

        Filesize

        64KB

        MD5

        31d745f5009eeda2da51b2d05d9711c5

        SHA1

        26c27b236bed8cb2046acddcc1c7d7b642b7c610

        SHA256

        37330d19e9479d225bf3934cf1b7bb233adc6bf0c8c876f181b814759d7c0b0f

        SHA512

        8319478d1ef266243e26592edbef9acbb07eb6de059043981e7f824424501691d41eef4736f6fe05e7ffc718ed0133489d22bd850c7a6773f7f50bf34207da4b

      • C:\Windows\System32\fr\1610b97d3ab4a7

        Filesize

        261B

        MD5

        8c949c7d2dad3d666be24871c3cd2e86

        SHA1

        e5bff45b38740a81b34063f947ea990416aeb34c

        SHA256

        2c2fb24dcd1d7808b80af11a6420d65c749493f7ca99e0aed71fa21e6e79d413

        SHA512

        2562ac108b09b86db207a604a46c861b9537d86afb074bd323c1146364993312ec32d514dca747b29ad0e751c3e87cebf9b2a6542ce0c6a12ee5790c89ad7ee4

      • C:\WinnetCommonSvc\29be4396a9f187

        Filesize

        83B

        MD5

        e3d05c748c224cdf88397b5053b3aa04

        SHA1

        cfa935201d435272f06f31b3f6e54b012b0f00ee

        SHA256

        81d20fe2c13c6997ad46c5d814a899947cae4ffa06e58ee62b67b893635b9377

        SHA512

        d71133f141b7f627e8eae1ecd60d6573e3a0c4d1d14b22a83b5988afdc058c4342ce3ae5eab2949177b08b99ceafc2c7ee1f043dc0bfab3e663f6b188d580ec4

      • C:\WinnetCommonSvc\EF1rb20B7Zp52f5Q8odTU.vbe

        Filesize

        247B

        MD5

        8fbc46f9794e1b89929cd710e53f0459

        SHA1

        15453a386f1c94b5ea4cd0ec41aa3c79c5dd2f54

        SHA256

        aaa6ca00879bea0f370824f57a72071aea49ae438ad2abb3eb4c9faddbab3d86

        SHA512

        b9fe28c4b771eae1f2261e4e17ec9e6d6055e17a5a2a5a32f8ecc7aaba9cf73f14e89ffafcc3455ed57cfa48fdde6d393630f585349f8ce4d2302543f323dc9b

      • C:\WinnetCommonSvc\cf20f2cf4406ff

        Filesize

        920B

        MD5

        2390960603661fe67f194b503f57a3c0

        SHA1

        6c4d90ffe7f1405edad83f9f944698d49cf143a1

        SHA256

        46280c26021f6d18768827e400cf95ec2217bbfd6774a2a26f8ef0149f4d05fb

        SHA512

        1c8a5d87bb07a85394d956f89b3ea4c5a596d4378e023c0aa44b51059c71cd66673aab1f097de8e27a1253d3b743f46c5895fc416fbe1a533d0c463369041f06

      • C:\WinnetCommonSvc\ckg6ORaGrHhdrhoaDEIfOHU33jMcFfgqQelkNCXcy5pLINkbo7vRcc.bat

        Filesize

        89B

        MD5

        f2c017fa853e79d1fc9f0ef254fbd9b7

        SHA1

        911039790cbad8fd3d7ff7d5dd3ed0099adc4ed9

        SHA256

        8848856354f6c99d5821c08136a03c75597f43dbfe1f8475998db4b19e833b13

        SHA512

        ec1af3b307d7c7d30011ef7a9d0d1b7c53f15cdc7f028163fa40db3711e9d83271dc4a089160d9c9a6b4687ddd87b0cd6fd5bda2e375a080c8d0a6badc4885ca

      • C:\WinnetCommonSvc\fontWinnet.exe

        Filesize

        1.9MB

        MD5

        a5696185d5f9c88887e304e46944a366

        SHA1

        dd3daef6d70edcfbff6e58a123a25e212534941f

        SHA256

        3672ce6a54d5f04368c85ca8d46b2f0d67b548d05703bb14cf3492dc21fff8da

        SHA512

        9dadc5dfec936039b09aeed6c49a58cbe1162a9939283efa27d8660ea8aeeafc28d246ddf4270df93d89af15822d1f8b4aebc8d74ba040969753975013b3d579

      • memory/2180-19-0x000007FEF5E90000-0x000007FEF687C000-memory.dmp

        Filesize

        9.9MB

      • memory/2180-0-0x000007FEF5E93000-0x000007FEF5E94000-memory.dmp

        Filesize

        4KB

      • memory/2180-1-0x0000000000B50000-0x0000000000D28000-memory.dmp

        Filesize

        1.8MB

      • memory/2220-70-0x000007FEF5E90000-0x000007FEF687C000-memory.dmp

        Filesize

        9.9MB

      • memory/2220-28-0x000007FEF5E90000-0x000007FEF687C000-memory.dmp

        Filesize

        9.9MB

      • memory/2220-18-0x0000000000F20000-0x0000000000F36000-memory.dmp

        Filesize

        88KB

      • memory/2508-72-0x0000000001110000-0x00000000012FC000-memory.dmp

        Filesize

        1.9MB

      • memory/2552-29-0x0000000000A80000-0x0000000000AC4000-memory.dmp

        Filesize

        272KB

      • memory/2692-38-0x0000000000810000-0x000000000081E000-memory.dmp

        Filesize

        56KB

      • memory/2692-42-0x0000000002370000-0x0000000002388000-memory.dmp

        Filesize

        96KB

      • memory/2692-44-0x0000000000820000-0x000000000082C000-memory.dmp

        Filesize

        48KB

      • memory/2692-48-0x0000000002390000-0x000000000239C000-memory.dmp

        Filesize

        48KB

      • memory/2692-46-0x0000000000830000-0x000000000083E000-memory.dmp

        Filesize

        56KB

      • memory/2692-40-0x0000000002350000-0x000000000236C000-memory.dmp

        Filesize

        112KB

      • memory/2692-36-0x00000000000E0000-0x00000000002CC000-memory.dmp

        Filesize

        1.9MB