Analysis

  • max time kernel
    44s
  • max time network
    136s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    05-05-2023 21:00

General

  • Target

    testpandirequests.exe

  • Size

    167KB

  • MD5

    2c68cf0afa3c48c737b3751ccc373cbb

  • SHA1

    1c097af0de509aa14d52630a84e814bae06ee4d9

  • SHA256

    1afecf61614136499d6fd09238fb7900582bdd0487dd4ef1782862ed5c2dd09b

  • SHA512

    0ba449d2bac3a962bc63fdc5966849ba83f04854ab110f6409b45423abf056f2fa1fc6880924326d6fd8e8e43bc91b3395ac79c79d7d5e3c14009c8a056b0e4f

  • SSDEEP

    3072:+KzuRoHDIL06b4vIJq4NGDisYRrmWPyvW/fHPqScSoAAdbt:+Kzqma06b4QE43HPr

Score
10/10

Malware Config

Extracted

Family

gurcu

C2

https://api.telegram.org/bot5975822207:AAFJtzAlzLoF8RfkpKUagQJGRi0ksib6w3g/sendMessage?chat_id=1396661331

Signatures

  • Gurcu, WhiteSnake

    Gurcu is a malware stealer written in C#.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • 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).

  • Program crash 2 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\testpandirequests.exe
    "C:\Users\Admin\AppData\Local\Temp\testpandirequests.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1848
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C chcp 65001 && ping 127.0.0.1 && schtasks /create /tn "testpandirequests" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\NET.Framework\testpandirequests.exe" /rl HIGHEST /f && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\testpandirequests.exe" &&START "" "C:\Users\Admin\AppData\Local\NET.Framework\testpandirequests.exe"
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:1980
      • C:\Windows\system32\chcp.com
        chcp 65001
        3⤵
          PID:508
        • C:\Windows\system32\PING.EXE
          ping 127.0.0.1
          3⤵
          • Runs ping.exe
          PID:936
        • C:\Windows\system32\schtasks.exe
          schtasks /create /tn "testpandirequests" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\NET.Framework\testpandirequests.exe" /rl HIGHEST /f
          3⤵
          • Creates scheduled task(s)
          PID:564
        • C:\Users\Admin\AppData\Local\NET.Framework\testpandirequests.exe
          "C:\Users\Admin\AppData\Local\NET.Framework\testpandirequests.exe"
          3⤵
          • Executes dropped EXE
          • Modifies system certificate store
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1060
          • C:\Windows\system32\WerFault.exe
            C:\Windows\system32\WerFault.exe -u -p 1060 -s 1828
            4⤵
            • Program crash
            PID:476
    • C:\Windows\system32\taskeng.exe
      taskeng.exe {72B0BF4E-4923-4C4B-8612-3B2D2121217F} S-1-5-21-1914912747-3343861975-731272777-1000:TMRJMUQF\Admin:Interactive:[1]
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:1788
      • C:\Users\Admin\AppData\Local\NET.Framework\testpandirequests.exe
        C:\Users\Admin\AppData\Local\NET.Framework\testpandirequests.exe
        2⤵
        • Executes dropped EXE
        • Modifies system certificate store
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1128
        • C:\Windows\system32\WerFault.exe
          C:\Windows\system32\WerFault.exe -u -p 1128 -s 1792
          3⤵
          • Program crash
          PID:1132

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

      Filesize

      62KB

      MD5

      3ac860860707baaf32469fa7cc7c0192

      SHA1

      c33c2acdaba0e6fa41fd2f00f186804722477639

      SHA256

      d015145d551ecd14916270efad773bbc9fd57fad2228d2c24559f696c961d904

      SHA512

      d62ad2408c969a95550fb87efda50f988770ba5e39972041bf85924275baf156b8bec309ecc6409e5acdd37ec175dea40eff921ab58933b5b5b5d35a6147567c

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

      Filesize

      62KB

      MD5

      3ac860860707baaf32469fa7cc7c0192

      SHA1

      c33c2acdaba0e6fa41fd2f00f186804722477639

      SHA256

      d015145d551ecd14916270efad773bbc9fd57fad2228d2c24559f696c961d904

      SHA512

      d62ad2408c969a95550fb87efda50f988770ba5e39972041bf85924275baf156b8bec309ecc6409e5acdd37ec175dea40eff921ab58933b5b5b5d35a6147567c

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

      Filesize

      344B

      MD5

      3370cd25dc68588896f0a81723b5b244

      SHA1

      970d562c0c670470eb227ba6dc77b7f75ac1d7bc

      SHA256

      978e427ad30c2fd5c45b5991f479ab7d4364ac4051716fde843ee8fb4f3ce919

      SHA512

      ef04e2ace5cc1e4b66c778b0abfb4f639c954a5d377934f06a76c8b1bf2075bfbb097da89db88f3366b3f5ac6bf2f085eccfb890d91d242801f66d98d1d6da74

    • C:\Users\Admin\AppData\Local\11gybl5ujf\port.dat

      Filesize

      4B

      MD5

      e8258e5140317ff36c7f8225a3bf9590

      SHA1

      070712c23d5a7197bce22cc097c928860c96187b

      SHA256

      46957db596ec41cc39bbfe0083740a488c59970b13e4b39e7937edb518696e3b

      SHA512

      71f3a31a4c16bfd17c01b9c01c1b9ba3797764ba129da4a72716843fc3627a2dd9985d8d9d51fc45955ce6aec8ce73238bee7d96bbf8f8d27817c5a81599d8f5

    • C:\Users\Admin\AppData\Local\NET.Framework\testpandirequests.exe

      Filesize

      167KB

      MD5

      2c68cf0afa3c48c737b3751ccc373cbb

      SHA1

      1c097af0de509aa14d52630a84e814bae06ee4d9

      SHA256

      1afecf61614136499d6fd09238fb7900582bdd0487dd4ef1782862ed5c2dd09b

      SHA512

      0ba449d2bac3a962bc63fdc5966849ba83f04854ab110f6409b45423abf056f2fa1fc6880924326d6fd8e8e43bc91b3395ac79c79d7d5e3c14009c8a056b0e4f

    • C:\Users\Admin\AppData\Local\NET.Framework\testpandirequests.exe

      Filesize

      167KB

      MD5

      2c68cf0afa3c48c737b3751ccc373cbb

      SHA1

      1c097af0de509aa14d52630a84e814bae06ee4d9

      SHA256

      1afecf61614136499d6fd09238fb7900582bdd0487dd4ef1782862ed5c2dd09b

      SHA512

      0ba449d2bac3a962bc63fdc5966849ba83f04854ab110f6409b45423abf056f2fa1fc6880924326d6fd8e8e43bc91b3395ac79c79d7d5e3c14009c8a056b0e4f

    • C:\Users\Admin\AppData\Local\NET.Framework\testpandirequests.exe

      Filesize

      167KB

      MD5

      2c68cf0afa3c48c737b3751ccc373cbb

      SHA1

      1c097af0de509aa14d52630a84e814bae06ee4d9

      SHA256

      1afecf61614136499d6fd09238fb7900582bdd0487dd4ef1782862ed5c2dd09b

      SHA512

      0ba449d2bac3a962bc63fdc5966849ba83f04854ab110f6409b45423abf056f2fa1fc6880924326d6fd8e8e43bc91b3395ac79c79d7d5e3c14009c8a056b0e4f

    • C:\Users\Admin\AppData\Local\Temp\Cab2254.tmp

      Filesize

      61KB

      MD5

      fc4666cbca561e864e7fdf883a9e6661

      SHA1

      2f8d6094c7a34bf12ea0bbf0d51ee9c5bb7939a5

      SHA256

      10f3deb6c452d749a7451b5d065f4c0449737e5ee8a44f4d15844b503141e65b

      SHA512

      c71f54b571e01f247f072be4bbebdf5d8410b67eb79a61e7e0d9853fe857ab9bd12f53e6af3394b935560178107291fc4be351b27deb388eba90ba949633d57d

    • C:\Users\Admin\AppData\Local\Temp\Tar23D1.tmp

      Filesize

      164KB

      MD5

      4ff65ad929cd9a367680e0e5b1c08166

      SHA1

      c0af0d4396bd1f15c45f39d3b849ba444233b3a2

      SHA256

      c8733c93cc5aaf5ca206d06af22ee8dbdec764fb5085019a6a9181feb9dfdee6

      SHA512

      f530dc0d024a5a3b8903ffaaa41b608a5ccdd6da4ba1949f2c2e55a9fca475fec5c8d2119b5763cabe7ef1c3788fb9dcac621869db51d65b1d83cfe404fb4c27

    • memory/1060-64-0x000000001B030000-0x000000001B0B0000-memory.dmp

      Filesize

      512KB

    • memory/1060-62-0x000000001B030000-0x000000001B0B0000-memory.dmp

      Filesize

      512KB

    • memory/1060-61-0x00000000010D0000-0x0000000001100000-memory.dmp

      Filesize

      192KB

    • memory/1848-54-0x00000000008D0000-0x0000000000900000-memory.dmp

      Filesize

      192KB

    • memory/1848-55-0x000000001A740000-0x000000001A7C0000-memory.dmp

      Filesize

      512KB