Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/11/2022, 11:19

General

  • Target
    file.exe
  • Size 213KB
  • Sample221107-nevcxadcb7
  • SHA256 9a941cff99433b69e172af8c97d2738a4c4846cd2f7dcf769bfa20f2c2dc21d9
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Detects Smokeloader packer 1 IoCs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 3 IoCs
  • Checks SCSI registry key(s) 3 TTPs 6 IoCs

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

  • Checks processor information in registry 2 TTPs 37 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 4 IoCs
  • Modifies registry class 19 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 24 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:4816
  • C:\Users\Admin\AppData\Roaming\rgvweej
    C:\Users\Admin\AppData\Roaming\rgvweej
    1⤵
    • Executes dropped EXE
    • Checks SCSI registry key(s)
    • Suspicious behavior: MapViewOfSection
    PID:4884
  • C:\Users\Admin\AppData\Local\Temp\BEAC.exe
    C:\Users\Admin\AppData\Local\Temp\BEAC.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:4860
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4860 -s 820
      2⤵
      • Program crash
      PID:1028
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4860 -s 820
      2⤵
      • Program crash
      PID:4124
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4860 -s 844
      2⤵
      • Program crash
      PID:1420
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\syswow64\rundll32.exe" "C:\Windows\syswow64\shell32.dll",#61
      2⤵
      • Checks processor information in registry
      • Modifies registry class
      • Suspicious use of FindShellTrayWindow
      PID:2528
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4860 -ip 4860
    1⤵
      PID:1304
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4860 -ip 4860
      1⤵
        PID:4408
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4860 -ip 4860
        1⤵
          PID:4036

        Network

              MITRE ATT&CK Enterprise v6

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              0d502779-c529-4ae0-a0cb-e70926e21349.tmp

              • Path C:\Users\Admin\AppData\Local\Temp\0d502779-c529-4ae0-a0cb-e70926e21349.tmp
              • Size 22KB
              • SHA256 d6f11c606729d553e9c9b3d0db9e5d51567ea969bedd98008cce7b9415a17490
              • MD5 SHA1 SHA512 SSDEEP

              BEAC.exe

              • Path C:\Users\Admin\AppData\Local\Temp\BEAC.exe
              • Size 4.9MB
              • SHA256 3f10d58651213291da8bab7fb94de6a36e47127e20225b36907fc2ce740f075c
              • MD5 SHA1 SHA512 SSDEEP

              BEAC.exe

              • Path C:\Users\Admin\AppData\Local\Temp\BEAC.exe
              • Size 4.9MB
              • SHA256 3f10d58651213291da8bab7fb94de6a36e47127e20225b36907fc2ce740f075c
              • MD5 SHA1 SHA512 SSDEEP

              GBQHURCC-20220812-1921.log

              • Path C:\Users\Admin\AppData\Local\Temp\GBQHURCC-20220812-1921.log
              • Size 60KB
              • SHA256 8c1d6e5d024f1fa3f60323e3d7b2d76c4090f73aab9aca557b74edf58cb68a19
              • MD5 SHA1 SHA512 SSDEEP

              Microsoft .NET Framework 4.7.2 Setup_20220812_191538705.html

              • Path C:\Users\Admin\AppData\Local\Temp\Microsoft .NET Framework 4.7.2 Setup_20220812_191538705.html
              • Size 94KB
              • SHA256 0be98a2f88b59cc8a14e48b604678303a0855a629751c2a31940a7b4073fa5a3
              • MD5 SHA1 SHA512 SSDEEP

              Saofurhaqqiry.tmp

              • Path C:\Users\Admin\AppData\Local\Temp\Saofurhaqqiry.tmp
              • Size 3.5MB
              • SHA256 30bd9cf5ebd5bb94e9b35366a213d00c818471af761f0e470f78c879b0e179dc
              • MD5 SHA1 SHA512 SSDEEP

              dd_vcredistMSI4F4B.txt

              • Path C:\Users\Admin\AppData\Local\Temp\dd_vcredistMSI4F4B.txt
              • Size 413KB
              • SHA256 ccf2276146f20981947b6552f94b9587c4e2b2bba5cc98d922ece8bb4adb53f0
              • MD5 SHA1 SHA512 SSDEEP

              jawshtml.html

              • Path C:\Users\Admin\AppData\Local\Temp\jawshtml.html
              • Size 13B
              • SHA256 7b4f72a40bd21934680f085afe8a30bf85acff1a8365af43102025c4ccf52b73
              • MD5 SHA1 SHA512

              wct1510.tmp

              • Path C:\Users\Admin\AppData\Local\Temp\wct1510.tmp
              • Size 62KB
              • SHA256 094754a618b102b7ad0800dd4c9c02c882cf2d1e7996ba864f422fa4312427e1
              • MD5 SHA1 SHA512 SSDEEP

              wct399A.tmp

              • Path C:\Users\Admin\AppData\Local\Temp\wct399A.tmp
              • Size 62KB
              • SHA256 094754a618b102b7ad0800dd4c9c02c882cf2d1e7996ba864f422fa4312427e1
              • MD5 SHA1 SHA512 SSDEEP

              rgvweej

              • Path C:\Users\Admin\AppData\Roaming\rgvweej
              • Size 213KB
              • SHA256 9a941cff99433b69e172af8c97d2738a4c4846cd2f7dcf769bfa20f2c2dc21d9
              • MD5 SHA1 SHA512 SSDEEP

              rgvweej

              • Path C:\Users\Admin\AppData\Roaming\rgvweej
              • Size 213KB
              • SHA256 9a941cff99433b69e172af8c97d2738a4c4846cd2f7dcf769bfa20f2c2dc21d9
              • MD5 SHA1 SHA512 SSDEEP

              memory/2528-163-0x0000000003DF0000-0x0000000003F30000-memory.dmp

              memory/2528-177-0x00000000030B0000-0x0000000003C23000-memory.dmp

              memory/2528-176-0x0000000003DF0000-0x0000000003F30000-memory.dmp

              memory/2528-175-0x00000000030B0000-0x0000000003C23000-memory.dmp

              memory/2528-174-0x0000000003DF0000-0x0000000003F30000-memory.dmp

              memory/2528-173-0x0000000000E00000-0x0000000001853000-memory.dmp

              memory/2528-162-0x00000000030B0000-0x0000000003C23000-memory.dmp

              memory/2528-164-0x0000000003DF0000-0x0000000003F30000-memory.dmp

              memory/4816-133-0x00000000006E0000-0x00000000006E9000-memory.dmp

              memory/4816-134-0x0000000000400000-0x0000000000590000-memory.dmp

              memory/4816-135-0x0000000000400000-0x0000000000590000-memory.dmp

              memory/4816-132-0x0000000000747000-0x0000000000757000-memory.dmp

              memory/4860-161-0x00000000039C0000-0x0000000004533000-memory.dmp

              memory/4860-154-0x00000000046B0000-0x00000000047F0000-memory.dmp

              memory/4860-159-0x00000000046B0000-0x00000000047F0000-memory.dmp

              memory/4860-145-0x000000000102E000-0x00000000014E3000-memory.dmp

              memory/4860-155-0x00000000046B0000-0x00000000047F0000-memory.dmp

              memory/4860-153-0x00000000046B0000-0x00000000047F0000-memory.dmp

              memory/4860-156-0x00000000046B0000-0x00000000047F0000-memory.dmp

              memory/4860-157-0x00000000046B0000-0x00000000047F0000-memory.dmp

              memory/4860-146-0x0000000002C90000-0x00000000032FF000-memory.dmp

              memory/4860-147-0x0000000000400000-0x0000000000A7C000-memory.dmp

              memory/4860-158-0x00000000046B0000-0x00000000047F0000-memory.dmp

              memory/4860-144-0x0000000000400000-0x0000000000A7C000-memory.dmp

              memory/4860-151-0x00000000039C0000-0x0000000004533000-memory.dmp

              memory/4860-152-0x00000000046B0000-0x00000000047F0000-memory.dmp

              memory/4860-150-0x0000000000400000-0x0000000000A7C000-memory.dmp

              memory/4860-148-0x00000000039C0000-0x0000000004533000-memory.dmp

              memory/4860-149-0x00000000039C0000-0x0000000004533000-memory.dmp

              memory/4884-140-0x0000000000400000-0x0000000000590000-memory.dmp

              memory/4884-138-0x0000000000837000-0x0000000000847000-memory.dmp

              memory/4884-139-0x0000000000400000-0x0000000000590000-memory.dmp