Resubmissions

21/02/2024, 22:56

240221-2wv8esgd6w

21/02/2024, 22:40

240221-2llagagg569

Analysis

  • max time kernel
    144s
  • max time network
    129s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    21/02/2024, 22:40

General

  • Target
    PCMgr_Setup.exe
  • Size 175.4MB
  • Sample240221-2llagagg56
  • SHA256 d605f22b61ac32bcb41db457e285f39126e328c242c810ba2fa5e451318dc7d6
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 10 IoCs
  • Loads dropped DLL 29 IoCs
  • Modifies system executable filetype association 2 TTPs 5 IoCs
  • Registers COM server for autorun 1 TTPs 6 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Installs/modifies Browser Helper Object 2 TTPs 3 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 9 IoCs
  • Modifies registry class 64 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 29 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 43 IoCs
  • Suspicious use of SendNotifyMessage 41 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PCMgr_Setup.exe
    "C:\Users\Admin\AppData\Local\Temp\PCMgr_Setup.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Drops file in Drivers directory
    • Loads dropped DLL
    • Adds Run key to start application
    • Writes to the Master Boot Record (MBR)
    • Drops file in Program Files directory
    • Modifies Internet Explorer settings
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:2208
    • C:\Users\Admin\AppData\Local\Temp\Tencent\QQPCMgr\~f7649ad\TestMSVCR.exe
      "C:\Users\Admin\AppData\Local\Temp\Tencent\QQPCMgr\~f7649ad\TestMSVCR.exe" (null)
      2⤵
      • Executes dropped EXE
      PID:2508
    • C:\Windows\SysWOW64\cacls.exe
      "cacls" "C:\Program Files (x86)\iOAEnt\108.3.19160.62000" /t /e /c /g SYSTEM:f
      2⤵
        PID:2308
      • C:\Program Files (x86)\iOAEnt\108.3.19160.62000\QQPCRTP.exe
        "C:\Program Files (x86)\iOAEnt\108.3.19160.62000\QQPCRTP.exe" -i
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:888
      • C:\Program Files (x86)\iOAEnt\108.3.19160.62000\platform\QMPicResize.exe
        "C:\Program Files (x86)\iOAEnt\108.3.19160.62000\platform\QMPicResize.exe" --Type=genico --PathDest="C:\ProgramData\Tencent\DeskUpdate\CustomRes\logoIcon_colour_256.ico" --PathSrc="C:\ProgramData\Tencent\DeskUpdate\CustomRes\logoIcon_colour_1024.png" --Sizes=[16,32,64,128,256]
        2⤵
        • Executes dropped EXE
        PID:2644
      • C:\Program Files (x86)\iOAEnt\108.3.19160.62000\QMBluerayInsHlp.exe
        "C:\Program Files (x86)\iOAEnt\108.3.19160.62000\QMBluerayInsHlp.exe" /install
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:876
        • C:\Program Files (x86)\iOAEnt\108.3.19160.62000\QMBluerayInsHlpx64.exe
          "C:\Program Files (x86)\iOAEnt\108.3.19160.62000\QMBluerayInsHlpx64.exe" /install
          3⤵
          • Executes dropped EXE
          PID:2212
      • C:\Program Files (x86)\iOAEnt\108.3.19160.62000\platform\QMPicResize.exe
        "C:\Program Files (x86)\iOAEnt\108.3.19160.62000\platform\QMPicResize.exe" --Type=resize --PathDest="C:\ProgramData\Tencent\DeskUpdate\CustomRes\logoIcon_colour_64.png" --PathSrc="C:\ProgramData\Tencent\DeskUpdate\CustomRes\logoIcon_colour_1024.png" --Width=64 --Height=64
        2⤵
        • Executes dropped EXE
        PID:2596
      • C:\Program Files (x86)\iOAEnt\108.3.19160.62000\platform\QMPicResize.exe
        "C:\Program Files (x86)\iOAEnt\108.3.19160.62000\platform\QMPicResize.exe" --Type=resize --PathDest="C:\ProgramData\Tencent\DeskUpdate\CustomRes\logoIcon_colour_32.png" --PathSrc="C:\ProgramData\Tencent\DeskUpdate\CustomRes\logoIcon_colour_1024.png" --Width=32 --Height=32
        2⤵
        • Executes dropped EXE
        PID:1996
      • C:\Program Files (x86)\iOAEnt\108.3.19160.62000\QMEMGSvc.exe
        "C:\Program Files (x86)\iOAEnt\108.3.19160.62000\QMEMGSvc.exe" -i
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:2428
      • C:\Program Files (x86)\iOAEnt\108.3.19160.62000\platform\QMPicResize.exe
        "C:\Program Files (x86)\iOAEnt\108.3.19160.62000\platform\QMPicResize.exe" --Type=resize --PathDest="C:\ProgramData\Tencent\DeskUpdate\CustomRes\logoIcon_white_32.png" --PathSrc="C:\ProgramData\Tencent\DeskUpdate\CustomRes\logoIcon_white_128.png" --Width=32 --Height=32
        2⤵
        • Executes dropped EXE
        PID:1284
      • C:\Users\Admin\AppData\Local\Temp\Tencent\QQPCMgr\~f7649ad\RemNPX.exe
        "C:\Users\Admin\AppData\Local\Temp\Tencent\QQPCMgr\~f7649ad\RemNPX.exe"
        2⤵
        • Executes dropped EXE
        PID:2940
      • C:\Windows\SysWOW64\regsvr32.exe
        "C:\Windows\system32\regsvr32.exe" /s "C:\Program Files (x86)\iOAEnt\108.3.19160.62000\TSWebMon64.dat"
        2⤵
        • Loads dropped DLL
        PID:2972
        • C:\Windows\system32\regsvr32.exe
          /s "C:\Program Files (x86)\iOAEnt\108.3.19160.62000\TSWebMon64.dat"
          3⤵
          • Loads dropped DLL
          • Registers COM server for autorun
          • Installs/modifies Browser Helper Object
          • Modifies registry class
          PID:1776
      • C:\Windows\SysWOW64\regsvr32.exe
        "C:\Windows\system32\regsvr32.exe" /s "C:\Program Files (x86)\iOAEnt\108.3.19160.62000\QMContextScan64.dll"
        2⤵
        • Loads dropped DLL
        PID:348
        • C:\Windows\system32\regsvr32.exe
          /s "C:\Program Files (x86)\iOAEnt\108.3.19160.62000\QMContextScan64.dll"
          3⤵
          • Loads dropped DLL
          • Modifies system executable filetype association
          • Registers COM server for autorun
          • Modifies registry class
          PID:2004
      • C:\Windows\SysWOW64\regsvr32.exe
        "C:\Windows\system32\regsvr32.exe" /s "C:\Program Files (x86)\iOAEnt\108.3.19160.62000\QMContextScan.dll"
        2⤵
        • Loads dropped DLL
        • Modifies system executable filetype association
        • Modifies registry class
        PID:1768
    • C:\Windows\system32\taskmgr.exe
      "C:\Windows\system32\taskmgr.exe" /4
      1⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2328

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          FilterService.ini

          • Path C:\Program Files (x86)\iOAEnt\108.3.19160.62000\FilterService.ini
          • Size 1KB
          • SHA256 f0acb5b3baa229372cc38cdb349a86f2d129bb0062df7491c55c3534d9489d95
          • MD5 SHA1 SHA512

          QMBluerayInsHlp.exe

          • Path C:\Program Files (x86)\iOAEnt\108.3.19160.62000\QMBluerayInsHlp.exe
          • Size 124KB
          • SHA256 5f93bc722acb0a0cfce07e5bd21faa835fb9a1108803fe6571d9adcb652fc1d8
          • MD5 SHA1 SHA512 SSDEEP

          QMBluerayInsHlpx64.exe

          • Path C:\Program Files (x86)\iOAEnt\108.3.19160.62000\QMBluerayInsHlpx64.exe
          • Size 160KB
          • SHA256 c4136551d9baf5f19205555c79f749c9e34ba684d4f35010bbe20b3e6a3d7a41
          • MD5 SHA1 SHA512 SSDEEP

          QMEMGSvc.exe

          • Path C:\Program Files (x86)\iOAEnt\108.3.19160.62000\QMEMGSvc.exe
          • Size 388KB
          • SHA256 02998058b26a115b20a68723a40e0efdea15a74e860f6e330aa8ad4a436e948f
          • MD5 SHA1 SHA512 SSDEEP

          QMLogEx.ini

          • Path C:\Program Files (x86)\iOAEnt\108.3.19160.62000\QMLogEx.ini
          • Size 230B
          • SHA256 1e6ee4ee197b36f281a71f8ad388e2b20a898a3598c490b15011809bcde41330
          • MD5 SHA1 SHA512

          QQPCRTP.exe

          • Path C:\Program Files (x86)\iOAEnt\108.3.19160.62000\QQPCRTP.exe
          • Size 494KB
          • SHA256 41b9a79414d019cc5617338c8a256206c34e83c562be6346ed4b046d6aabbdd3
          • MD5 SHA1 SHA512 SSDEEP

          QQPCTray.exe

          • Path C:\Program Files (x86)\iOAEnt\108.3.19160.62000\QQPCTray.exe
          • Size 481KB
          • SHA256 e8c6cc21988aba61cd2e7bc8b4a20fc0b5c2e4c30b788809023649d262ca867d
          • MD5 SHA1 SHA512 SSDEEP

          RefuseInjectShell.DAT

          • Path C:\Program Files (x86)\iOAEnt\108.3.19160.62000\RefuseInjectShell.DAT
          • Size 3KB
          • SHA256 1208b23cfb0cd31d579337e830ccd8e23f3e0d87d424da03e806e6a02d18135c
          • MD5 SHA1 SHA512

          QMPicResize.exe

          • Path C:\Program Files (x86)\iOAEnt\108.3.19160.62000\platform\QMPicResize.exe
          • Size 1.1MB
          • SHA256 658b5cc8f2d598e0c4b00b1123da3fbb0dce8da96d176ee10d47183965a36fc6
          • MD5 SHA1 SHA512 SSDEEP

          QMPicResize.exe

          • Path C:\Program Files (x86)\iOAEnt\108.3.19160.62000\platform\QMPicResize.exe
          • Size 2.1MB
          • SHA256 62bfdec8f34ab1c0c238ce344dfc7ba250cf473567de8cdc2fbe56a8d98c3dcf
          • MD5 SHA1 SHA512 SSDEEP

          logoIcon_colour_1024.png

          • Path C:\ProgramData\Tencent\DeskUpdate\CustomRes\logoIcon_colour_1024.png
          • Size 2KB
          • SHA256 13b905f7a60c2e7ca2d9cd4004eba3c3d2bb876cfd54c7e80bc31e6c8863ba9d
          • MD5 SHA1 SHA512

          logoIcon_white_128.png

          • Path C:\ProgramData\Tencent\DeskUpdate\CustomRes\logoIcon_white_128.png
          • Size 2KB
          • SHA256 5771e6c030d9390cf9168b09d40cd3d918993e13299bba174e34434307b6191b
          • MD5 SHA1 SHA512

          PreConfig.dat

          • Path C:\ProgramData\Tencent\DeskUpdate\PreConfig.dat
          • Size 1.2MB
          • SHA256 c118cb8c6269674c8e1c241500babe4c4a91639a4b39b4871b2bc76712bd21c2
          • MD5 SHA1 SHA512 SSDEEP

          QMNetworkMgr.ini

          • Path C:\ProgramData\Tencent\DeskUpdate\QMNetworkMgr.ini
          • Size 1KB
          • SHA256 7c8d4868e0a337caae242b1b0bb9cf097c92e06129e66b359a0f72b6d90eecf3
          • MD5 SHA1 SHA512

          QQPCMgrInstall_20240221224132.Log

          • Path C:\ProgramData\Tencent\QQPCMgr\QQPCMgrInstall_20240221224132.Log
          • Size 7.7MB
          • SHA256 f2cfa4d0aa3a77003e54a60a9fee8852608a95de5d4b05c2e08f88dc299e83c1
          • MD5 SHA1 SHA512 SSDEEP

          QQPCMgrInstall_20240221224132.Log

          • Path C:\ProgramData\Tencent\QQPCMgr\QQPCMgrInstall_20240221224132.Log
          • Size 1KB
          • SHA256 173571f6e08506a3b4529729f6eaf66fca0ec9cf665b5d38018eb90ac16e0670
          • MD5 SHA1 SHA512

          QMCommon.dll

          • Path C:\ProgramData\Tencent\QQPCMgr\Quarantine\QMCommon.dll
          • Size 932KB
          • SHA256 b5d21f748ef87f20455a07f628c15bb05751a7e103dc2b8c4ceac7750bee4a4a
          • MD5 SHA1 SHA512 SSDEEP

          QMQuarantine.exe

          • Path C:\ProgramData\Tencent\QQPCMgr\Quarantine\QMQuarantine.exe
          • Size 464KB
          • SHA256 efa174f633b5a4300d8831d6b1ddb3e33b514e579a78dd88561f82d6d5680255
          • MD5 SHA1 SHA512 SSDEEP

          sqlite.dll

          • Path C:\ProgramData\Tencent\QQPCMgr\sqlite.dll
          • Size 476KB
          • SHA256 edbaf842118a1d6a19880e39df693b1fcfe6e932095bd1d244ffa4af8d43cf28
          • MD5 SHA1 SHA512 SSDEEP

          RemNPX.exe

          • Path C:\Users\Admin\AppData\Local\Temp\Tencent\QQPCMgr\~f7649ad\RemNPX.exe
          • Size 39KB
          • SHA256 f842e1ebeb8787c72ab9edf4dfe5d365ad865798a5f7e2d07d48c1f12771925a
          • MD5 SHA1 SHA512 SSDEEP

          QMAntiInject.dll

          • Path \Program Files (x86)\iOAEnt\108.3.19160.62000\QMAntiInject.dll
          • Size 120KB
          • SHA256 cb18cf0149895d9aed3fabe16a4b863aff7d408552196cd6fdb7a3f318997c65
          • MD5 SHA1 SHA512 SSDEEP

          QMAntiInject.dll

          • Path \Program Files (x86)\iOAEnt\108.3.19160.62000\QMAntiInject.dll
          • Size 8KB
          • SHA256 705461bc64a4d2d8a1fb558ca9c9dc495ad20d1cb7ef510131062505fd2b8ca4
          • MD5 SHA1 SHA512 SSDEEP

          QMCommon.dll

          • Path \Program Files (x86)\iOAEnt\108.3.19160.62000\QMCommon.dll
          • Size 704KB
          • SHA256 b332c09c60d991634ff13b74d3dae5ed030cdbd2d30f9f6acd2773256db00ddb
          • MD5 SHA1 SHA512 SSDEEP

          QMCommon.dll

          • Path \Program Files (x86)\iOAEnt\108.3.19160.62000\QMCommon.dll
          • Size 640KB
          • SHA256 37bf5713fd9597f996663b9cedc3a6b1e68bb1843d1fcda0127343289bcf11fd
          • MD5 SHA1 SHA512 SSDEEP

          QMContextScan.dll

          • Path \Program Files (x86)\iOAEnt\108.3.19160.62000\QMContextScan.dll
          • Size 156KB
          • SHA256 c7b34050ef7d3cc1c0e54edb43edf246357b0ad2226b6d780e09736214d912ad
          • MD5 SHA1 SHA512 SSDEEP

          QMContextScan64.dll

          • Path \Program Files (x86)\iOAEnt\108.3.19160.62000\QMContextScan64.dll
          • Size 197KB
          • SHA256 da3e3393bc1bbf93a486762a0535e9b37e87b0002dec06d0d01bdd18ba5db4d4
          • MD5 SHA1 SHA512 SSDEEP

          RefuseInject.dll

          • Path \Program Files (x86)\iOAEnt\108.3.19160.62000\RefuseInject.dll
          • Size 268KB
          • SHA256 7ef83d45d493fb3cf3846d1b14d75495891719c14ec7e0b624b4a400a13358aa
          • MD5 SHA1 SHA512 SSDEEP

          RefuseInject.dll

          • Path \Program Files (x86)\iOAEnt\108.3.19160.62000\RefuseInject.dll
          • Size 128KB
          • SHA256 474f71e2e62cb896a29179060deba553a15a8f5fe6178d8e3b3cf7b89196aa50
          • MD5 SHA1 SHA512 SSDEEP

          TSWebMon64.dat

          • Path \Program Files (x86)\iOAEnt\108.3.19160.62000\TSWebMon64.dat
          • Size 376KB
          • SHA256 a1d9f97fb6d5b9655a6c97e6fc03249a43c559abb1fcb057c67974ae0679c58c
          • MD5 SHA1 SHA512 SSDEEP

          dr.dll

          • Path \Program Files (x86)\iOAEnt\108.3.19160.62000\dr.dll
          • Size 220KB
          • SHA256 85c3c7362076d08d708f14205331fe5a75d9f0a31ed81628dde1a1563bf1eab8
          • MD5 SHA1 SHA512 SSDEEP

          dr.dll

          • Path \Program Files (x86)\iOAEnt\108.3.19160.62000\dr.dll
          • Size 128KB
          • SHA256 5e4dde794ae65739db723427bb78b0f8665e3de0ef0bcdccb933191f2da5a109
          • MD5 SHA1 SHA512 SSDEEP

          QMPicResize.exe

          • Path \Program Files (x86)\iOAEnt\108.3.19160.62000\platform\QMPicResize.exe
          • Size 1.6MB
          • SHA256 355fba4d8b346aa375152d0bb308c7476001533371d61d078c11ec7b2bb57dcb
          • MD5 SHA1 SHA512 SSDEEP

          ptrate.dll

          • Path \Program Files (x86)\iOAEnt\108.3.19160.62000\ptrate.dll
          • Size 80KB
          • SHA256 873c78c9bc12430d0c1ea828f66a9f517ccd43f315fbc1990bcffc27a9ec37a6
          • MD5 SHA1 SHA512 SSDEEP

          zlib.dll

          • Path \Program Files (x86)\iOAEnt\108.3.19160.62000\zlib.dll
          • Size 86KB
          • SHA256 7edcb2f6e382e9f38e061be8fe3d6e60e9a750c3baf29791adf900b5d396d363
          • MD5 SHA1 SHA512 SSDEEP

          PackageConf.dll

          • Path \Users\Admin\AppData\Local\Temp\Tencent\QQPCMgr\~f7649ad\PackageConf.dll
          • Size 263KB
          • SHA256 b953e77f456824c4d2676115a16fbc1fec5fd7082abd71b15e7b138efc1d89ce
          • MD5 SHA1 SHA512 SSDEEP

          TestMSVCR.exe

          • Path \Users\Admin\AppData\Local\Temp\Tencent\QQPCMgr\~f7649ad\TestMSVCR.exe
          • Size 16KB
          • SHA256 3313c7606698e6721f65a8ec84e7e1f95859b39a7e2ca40463164788ab00565d
          • MD5 SHA1 SHA512 SSDEEP

          dr.dll

          • Path \Users\Admin\AppData\Local\Temp\Tencent\QQPCMgr\~f7649ad\dr.dll
          • Size 421KB
          • SHA256 7c8fbe194c7267c97bb27b92f5d592aa1716464bbdfac466ae33416b54bb32d7
          • MD5 SHA1 SHA512 SSDEEP

          memory/888-1547-0x000000006FFE0000-0x000000006FFF0000-memory.dmp

          memory/888-1565-0x0000000077679000-0x000000007767A000-memory.dmp

          memory/888-1570-0x0000000077050000-0x00000000770ED000-memory.dmp

          memory/888-1563-0x00000000759C0000-0x0000000075AD0000-memory.dmp

          memory/888-1620-0x00000000759C0000-0x0000000075AD0000-memory.dmp

          memory/888-1612-0x0000000075AF0000-0x0000000075C4C000-memory.dmp

          memory/2208-37-0x0000000002340000-0x0000000002341000-memory.dmp

          memory/2208-63-0x000000000EF90000-0x000000000EF96000-memory.dmp

          memory/2208-1609-0x0000000002340000-0x0000000002341000-memory.dmp

          memory/2208-1613-0x000000000EF90000-0x000000000EF96000-memory.dmp

          memory/2328-1648-0x0000000140000000-0x00000001405E8000-memory.dmp

          memory/2328-1647-0x0000000140000000-0x00000001405E8000-memory.dmp

          memory/2428-1538-0x000000006FFF0000-0x0000000070000000-memory.dmp

          memory/2508-67-0x0000000000400000-0x0000000000406000-memory.dmp

          memory/2508-66-0x0000000000400000-0x0000000000406000-memory.dmp