Analysis

  • max time kernel
    148s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-10-2024 14:08

General

  • Target

    YoudaodbDictSetup.msi

  • Size

    137.3MB

  • MD5

    25a66e2b89ffbccc4212ed9667aabad6

  • SHA1

    da741340579368470360ac24492e49e832c18280

  • SHA256

    bc4ee3094614f5d0a77cf72a0a997dddcc6906632798d36724b86323c00f43dd

  • SHA512

    1b2c87bde46ba2f7d811790ac954afdb4b40bcd33b328569c2e6a94764762fa0e13210333bfd0e8218819d05dbdec070fc075826b5da9490781330c602a8acfc

  • SSDEEP

    3145728:BzYKj8WH3zFrbOc+ZWh4kWjoNFoaApVQ9CBkNNWKmH7M7x3e:eCjhbOJWhi4FoMy0NWl7M7xu

Malware Config

Signatures

  • Detect PurpleFox Rootkit 5 IoCs

    Detect PurpleFox Rootkit.

  • Gh0st RAT payload 5 IoCs
  • Gh0strat

    Gh0st RAT is a remote access tool (RAT) with its source code public and it has been used by multiple Chinese groups.

  • PurpleFox

    PurpleFox is an exploit kit used to distribute other malware families and first seen in 2018.

  • Enumerates connected drives 3 TTPs 64 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 37 IoCs
  • Drops file in Windows directory 14 IoCs
  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 11 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 9 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.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Modifies data under HKEY_USERS 5 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 57 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\YoudaodbDictSetup.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:4488
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4992
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding BEE232C0B345906CFC11F7A236B0B138
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:3392
    • C:\Windows\Installer\MSIAD2E.tmp
      "C:\Windows\Installer\MSIAD2E.tmp" /DontWait "C:\Users\Admin\AppData\Local\Temp\YoudaoDict_fanyiweb_navigation.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4036
    • C:\Windows\Installer\MSIAD3F.tmp
      "C:\Windows\Installer\MSIAD3F.tmp" /DontWait "C:\Users\Admin\AppData\Local\Temp\SoftUpdate.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4976
  • C:\Users\Admin\AppData\Local\Temp\SoftUpdate.exe
    "C:\Users\Admin\AppData\Local\Temp\SoftUpdate.exe"
    1⤵
    • Drops file in System32 directory
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4516
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ping -n 2 127.0.0.1 > nul && del C:\Users\Admin\AppData\Local\Temp\SOFTUP~1.EXE > nul
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:7960
      • C:\Windows\SysWOW64\PING.EXE
        ping -n 2 127.0.0.1
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Runs ping.exe
        PID:8716
  • C:\Users\Admin\AppData\Local\Temp\YoudaoDict_fanyiweb_navigation.exe
    "C:\Users\Admin\AppData\Local\Temp\YoudaoDict_fanyiweb_navigation.exe"
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    PID:3980
  • C:\Windows\SysWOW64\Jbrja.exe
    C:\Windows\SysWOW64\Jbrja.exe -auto
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:29468
    • C:\Windows\SysWOW64\Jbrja.exe
      C:\Windows\SysWOW64\Jbrja.exe -acsi
      2⤵
      • Enumerates connected drives
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Checks processor information in registry
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:7948

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Config.Msi\e57a4af.rbs

    Filesize

    420KB

    MD5

    d1e07e1ed2c92c4382b30b675cbb8daf

    SHA1

    7a75aec79029f826a87557513bff97953ad00b69

    SHA256

    c4e2e7a0bfbc62e0047f5b409734c64a37e4843025653a6d452e65c7242795a3

    SHA512

    f2460b19e9487c46f4e88609e43098b1df6be8abfddd29b778058f3ab954d27670b847a9ee155cbb2bfb62db3a5069548d4ca11361e4682d979cbefb815f67b3

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

    Filesize

    28.2MB

    MD5

    2eddc71f8411e884abe75bf510abe145

    SHA1

    efad03718fe54845a8ea7838267ab70be89c66cd

    SHA256

    5d7c4dc4325b149e3461ff52430b1048fe688208e294ab86530c65981aa95915

    SHA512

    dedc0d43a555d3bf4f7411abca51984a61c923457d32a6b055f4a035f84e1744ec7fc995242cb401473fe6242220540dfa82e43d531f3bf223f937aee76e62c0

  • C:\Users\Admin\AppData\Local\Temp\nswBE02.tmp\LockedList.dll

    Filesize

    95KB

    MD5

    5a94bf8916a11b5fe94aca44886c9393

    SHA1

    820d9c5e3365e323d6f43d3cce26fd9d2ea48b93

    SHA256

    0b1e46044b580121f30bedb2b5412d3170c6afaa7800d702ee71f7666904236d

    SHA512

    79cba3dcb249d88a6a6cfb4efcb65cc42a240af4edb14bcc7546d9c701a7b642362f9fe0488691a8906607ecc76f7b5ee5a4282fa057053b258eea143ac90c20

  • C:\Users\Admin\AppData\Local\Temp\nswBE02.tmp\OP_WndProc.dll

    Filesize

    48KB

    MD5

    765cf74fc709fb3450fa71aac44e7f53

    SHA1

    b423271b4faac68f88fef15fa4697cf0149bad85

    SHA256

    cc46ab0bf6b19a2601cd002b06769ad08baf4ed0b14e8728973f8af96bdee57e

    SHA512

    0c347d9a2960a17f8ec9b78ede972bf3cf6567fd079a6aa5a6ac262ac227bfd36acc53a7a127fd7f387dec9f4509f4f3f754b10853a213e993ea1573e74ed7e6

  • C:\Users\Admin\AppData\Local\Temp\nswBE02.tmp\SkinBtn.dll

    Filesize

    4KB

    MD5

    29818862640ac659ce520c9c64e63e9e

    SHA1

    485e1e6cc552fa4f05fb767043b1e7c9eb80be64

    SHA256

    e96afa894a995a6097a405df76155a7a39962ff6cae7a59d89a25e5a34ab9eeb

    SHA512

    ebb94eb21e060fb90ec9c86787eada42c7c9e1e7628ea4b16d3c7b414f554a94d5e4f4abe0e4ee30fddf4f904fd3002770a9b967fbd0feeca353e21079777057

  • C:\Users\Admin\AppData\Local\Temp\nswBE02.tmp\System.dll

    Filesize

    11KB

    MD5

    bf712f32249029466fa86756f5546950

    SHA1

    75ac4dc4808ac148ddd78f6b89a51afbd4091c2e

    SHA256

    7851cb12fa4131f1fee5de390d650ef65cac561279f1cfe70ad16cc9780210af

    SHA512

    13f69959b28416e0b8811c962a49309dca3f048a165457051a28a3eb51377dcaf99a15e86d7eee8f867a9e25ecf8c44da370ac8f530eeae7b5252eaba64b96f4

  • C:\Users\Admin\AppData\Local\Temp\nswBE02.tmp\btn_agree.bmp

    Filesize

    38KB

    MD5

    dab018047c171165c18329d5c59b617e

    SHA1

    88848ac4aceb7358f13d225de6d4fd0a5696517a

    SHA256

    1cf0d9e908c3134ffce859483504420578ee8ccda399c20ecc035d1e4da93734

    SHA512

    1f6c50885290a3b983b7b8ac4bfec546d74acf2c50bfd0d245164a5ee149fa28a2871d545286108345c055c4f86f2b115509fcf74a6b60bc3f814c1c1635162d

  • C:\Users\Admin\AppData\Local\Temp\nswBE02.tmp\btn_disagree.bmp

    Filesize

    38KB

    MD5

    5f7b90c87ea0517771862fae5f11ce94

    SHA1

    fc9f195e888d960139278c04a0e78996c6442d5b

    SHA256

    f906101e512c3119e71b6949d68ac01c8fdb5ef06f4c73eaef9a3f0bd6021ce2

    SHA512

    dc08461f1e823d898f5ba42c9d1a131f599adbcb0af28c5de950a01ec74015d3da933e675986b71dde09cc74e00689ebe5f5f6cff857d335322f18d3f385edf0

  • C:\Users\Admin\AppData\Local\Temp\nswBE02.tmp\checkbox_null.bmp

    Filesize

    3KB

    MD5

    5754c67775c3f4f50a4780b3bca026b1

    SHA1

    3e95c72c13d6175ef275280fe270d678acee46e9

    SHA256

    2a5d67757f61ca00227e9b482a7b15365ba836c11f5b7d723b650e6d4108e739

    SHA512

    df6744556a24d4f6b907fc6126035adca4d3ce8aba52b26112e59b24ebfc5c4e079ee8ed74df3f28fc62cc3e207041cf8fb6b6a84ec58125122c214924e0a97f

  • C:\Users\Admin\AppData\Local\Temp\nswBE02.tmp\nsDialogs.dll

    Filesize

    9KB

    MD5

    4ccc4a742d4423f2f0ed744fd9c81f63

    SHA1

    704f00a1acc327fd879cf75fc90d0b8f927c36bc

    SHA256

    416133dd86c0dff6b0fcaf1f46dfe97fdc85b37f90effb2d369164a8f7e13ae6

    SHA512

    790c5eb1f8b297e45054c855b66dfc18e9f3f1b1870559014dbefa3b9d5b6d33a993a9e089202e70f51a55d859b74e8605c6f633386fd9189b6f78941bf1bfdb

  • C:\Users\Admin\AppData\Local\Temp\nswBE02.tmp\slide6.bmp

    Filesize

    908KB

    MD5

    3d3ec6392cf9a8b408569a3dd4cd3ce8

    SHA1

    95ff4346eb20d9239c37e6538bb8df8542d3300a

    SHA256

    818f2cdb763f5af1884485cffef51f192bc895132a4fdff5009935e8348f8371

    SHA512

    e017cfd88c50c496ac86084a43a80eb3f1ec61c6397a67da2978cbb1867a4b30f563f1b4f319d00742b84df486e841804b82949e3131c7d77b7f63975dece505

  • C:\Windows\Installer\MSIA6CF.tmp

    Filesize

    587KB

    MD5

    c7fbd5ee98e32a77edf1156db3fca622

    SHA1

    3e534fc55882e9fb940c9ae81e6f8a92a07125a0

    SHA256

    e140990b509dd6884a5742bde64f2cdaa10012d472b0b32de43ebecbc83242b6

    SHA512

    8691ac8b214cc1e4f34a3ab2bbc0c2391f7f11ebbe5db0dc82825195b5fe5a05310ed1e14d253a9b74a64050d2f2a6623dd2fcd912f80fef51e51845ef1e3a1a

  • C:\Windows\Installer\MSIAD2E.tmp

    Filesize

    419KB

    MD5

    cac0eaeb267d81cf3fa968ee23a6af9d

    SHA1

    cf6ae8e44fb4949d5f0b01b110eaba49d39270a2

    SHA256

    f1dd0dd1e83b28ffa2ed30f46f98e94a4919ec1f4e9d33720354288b77153774

    SHA512

    8edf9f733dda9000a6e2b70da61912dbc15f74c836d738391ceddcdff20f5b420a678450523cf331aa9bce90217aa92ac6e73d1880ae15c9842ccc7d3296f95b

  • memory/4516-13122-0x0000000000400000-0x0000000002035000-memory.dmp

    Filesize

    28.2MB

  • memory/4516-3925-0x0000000076690000-0x0000000076830000-memory.dmp

    Filesize

    1.6MB

  • memory/4516-45-0x0000000000400000-0x0000000002035000-memory.dmp

    Filesize

    28.2MB

  • memory/4516-49-0x0000000077810000-0x0000000077A25000-memory.dmp

    Filesize

    2.1MB

  • memory/4516-5934-0x0000000076DF0000-0x0000000076E6A000-memory.dmp

    Filesize

    488KB

  • memory/4516-26204-0x0000000000400000-0x0000000002035000-memory.dmp

    Filesize

    28.2MB

  • memory/4516-13119-0x0000000000400000-0x0000000002035000-memory.dmp

    Filesize

    28.2MB

  • memory/4516-13121-0x0000000000400000-0x0000000002035000-memory.dmp

    Filesize

    28.2MB

  • memory/4516-13120-0x0000000000400000-0x0000000002035000-memory.dmp

    Filesize

    28.2MB

  • memory/4516-13124-0x0000000000400000-0x0000000002035000-memory.dmp

    Filesize

    28.2MB

  • memory/4516-13125-0x0000000010000000-0x000000001019F000-memory.dmp

    Filesize

    1.6MB

  • memory/7948-39367-0x0000000000400000-0x0000000002035000-memory.dmp

    Filesize

    28.2MB

  • memory/7948-26220-0x0000000077810000-0x0000000077A25000-memory.dmp

    Filesize

    2.1MB

  • memory/7948-30094-0x0000000076690000-0x0000000076830000-memory.dmp

    Filesize

    1.6MB

  • memory/7948-32103-0x0000000076DF0000-0x0000000076E6A000-memory.dmp

    Filesize

    488KB

  • memory/7948-39404-0x0000000000400000-0x0000000002035000-memory.dmp

    Filesize

    28.2MB

  • memory/7948-39389-0x0000000010000000-0x000000001019F000-memory.dmp

    Filesize

    1.6MB

  • memory/7948-39338-0x0000000000400000-0x0000000002035000-memory.dmp

    Filesize

    28.2MB

  • memory/7948-39388-0x0000000000400000-0x0000000002035000-memory.dmp

    Filesize

    28.2MB

  • memory/7948-39386-0x0000000000400000-0x0000000002035000-memory.dmp

    Filesize

    28.2MB

  • memory/7948-39384-0x0000000000400000-0x0000000002035000-memory.dmp

    Filesize

    28.2MB

  • memory/7948-39385-0x0000000000400000-0x0000000002035000-memory.dmp

    Filesize

    28.2MB

  • memory/29468-26207-0x0000000000400000-0x0000000002035000-memory.dmp

    Filesize

    28.2MB

  • memory/29468-17010-0x0000000076690000-0x0000000076830000-memory.dmp

    Filesize

    1.6MB

  • memory/29468-13136-0x0000000077810000-0x0000000077A25000-memory.dmp

    Filesize

    2.1MB

  • memory/29468-13135-0x0000000000400000-0x0000000002035000-memory.dmp

    Filesize

    28.2MB

  • memory/29468-19019-0x0000000076DF0000-0x0000000076E6A000-memory.dmp

    Filesize

    488KB

  • memory/29468-26205-0x0000000000400000-0x0000000002035000-memory.dmp

    Filesize

    28.2MB

  • memory/29468-26206-0x0000000000400000-0x0000000002035000-memory.dmp

    Filesize

    28.2MB

  • memory/29468-26210-0x0000000000400000-0x0000000002035000-memory.dmp

    Filesize

    28.2MB

  • memory/29468-26219-0x0000000000400000-0x0000000002035000-memory.dmp

    Filesize

    28.2MB

  • memory/29468-26208-0x0000000000400000-0x0000000002035000-memory.dmp

    Filesize

    28.2MB