Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/01/2023, 06:50

General

  • Target
    file.exe
  • Size 209KB
  • Sample230105-hlxtqaef31
  • SHA256 ebfcf679363659ae76c7194c1866c37e2308d4ce27276f2ec7ff6aebb4f245f0
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Detects Smokeloader packer 1 IoCs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Blocklisted process makes network request 3 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

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

  • 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 2 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Checks processor information in registry 2 TTPs 23 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 4 IoCs
  • Modifies registry class 30 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 20 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 12 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:4212
  • C:\Users\Admin\AppData\Local\Temp\CEAF.exe
    C:\Users\Admin\AppData\Local\Temp\CEAF.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:4200
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\Pyupydeoe.tmp",Uprsprhaot
      2⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Checks processor information in registry
      • Suspicious use of WriteProcessMemory
      PID:2660
      • C:\Windows\system32\rundll32.exe
        "C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 23945
        3⤵
        • Modifies registry class
        • Suspicious use of FindShellTrayWindow
        PID:1380
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4200 -s 536
      2⤵
      • Program crash
      PID:1664
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4200 -ip 4200
    1⤵
      PID:2780
    • C:\Users\Admin\AppData\Local\Temp\103D.exe
      C:\Users\Admin\AppData\Local\Temp\103D.exe
      1⤵
      • Executes dropped EXE
      PID:1064
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1064 -s 1208
        2⤵
        • Program crash
        PID:4484
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1064 -ip 1064
      1⤵
        PID:2056
      • C:\Windows\System32\rundll32.exe
        C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
        1⤵
          PID:4088
        • C:\Windows\SysWOW64\svchost.exe
          C:\Windows\SysWOW64\svchost.exe -k LocalService
          1⤵
            PID:3116
            • C:\Windows\SysWOW64\rundll32.exe
              "C:\Windows\system32\rundll32.exe" "c:\program files (x86)\windowspowershell\modules\fulltrustnotifier.dll",ZD0nNA==
              2⤵
                PID:4180

            Network

                  MITRE ATT&CK Enterprise v6

                  Replay Monitor

                  Loading Replay Monitor...

                  Downloads

                  FullTrustNotifier.dll

                  • Path C:\Program Files (x86)\WindowsPowerShell\Modules\FullTrustNotifier.dll
                  • Size 784KB
                  • SHA256 8f73f4d6178cbbfefba46bb5b2fc0b336ba9f9e94664a7953b950056fdd6178d
                  • MD5 SHA1 SHA512 SSDEEP

                  FullTrustNotifier.dll

                  • Path C:\Program Files (x86)\WindowsPowerShell\Modules\FullTrustNotifier.dll
                  • Size 784KB
                  • SHA256 8f73f4d6178cbbfefba46bb5b2fc0b336ba9f9e94664a7953b950056fdd6178d
                  • MD5 SHA1 SHA512 SSDEEP

                  C2RManifest.DCF.DCF.x-none.msi.16.x-none.xml

                  • Path C:\ProgramData\{E6FB8490-097E-1893-E5D7-72BBB5B030D6}\C2RManifest.DCF.DCF.x-none.msi.16.x-none.xml
                  • Size 15KB
                  • SHA256 5aa9e0d9f982ffa00c39ee9070a398e64f33959181ebfe9d2ee497f59ea10c12
                  • MD5 SHA1 SHA512 SSDEEP

                  CiPT0000.001

                  • Path C:\ProgramData\{E6FB8490-097E-1893-E5D7-72BBB5B030D6}\CiPT0000.001
                  • Size 64KB
                  • SHA256 c10595f1ade2f1adced14a578b437e6958adf631c01a4c167b14b6904eaf2680
                  • MD5 SHA1 SHA512 SSDEEP

                  E2A4F912-2574-4A75-9BB0-0D023378592B_10.0.19041.1023_neutral_neutral_cw5n1h2txyewy.xml

                  • Path C:\ProgramData\{E6FB8490-097E-1893-E5D7-72BBB5B030D6}\E2A4F912-2574-4A75-9BB0-0D023378592B_10.0.19041.1023_neutral_neutral_cw5n1h2txyewy.xml
                  • Size 2KB
                  • SHA256 c8c2ac11232a448dd5d78c34752f56b8f5b8e18fe79b3176fdd88759d5b703d5
                  • MD5 SHA1 SHA512

                  EventStore.db

                  • Path C:\ProgramData\{E6FB8490-097E-1893-E5D7-72BBB5B030D6}\EventStore.db
                  • Size 32KB
                  • SHA256 0580713efb76985a3b2157d6f0b08665f8084243caad401a1faf53900564f935
                  • MD5 SHA1 SHA512 SSDEEP

                  Microsoft.BingWeather_4.25.20211.0_neutral_~_8wekyb3d8bbwe.xml

                  • Path C:\ProgramData\{E6FB8490-097E-1893-E5D7-72BBB5B030D6}\Microsoft.BingWeather_4.25.20211.0_neutral_~_8wekyb3d8bbwe.xml
                  • Size 29KB
                  • SHA256 7117f778c590d79b5a434edaa09448f23332d1db26676db2c9463b0d2c2ddfb6
                  • MD5 SHA1 SHA512 SSDEEP

                  Microsoft.GetHelp_10.1706.13331.0_x64__8wekyb3d8bbwe.xml

                  • Path C:\ProgramData\{E6FB8490-097E-1893-E5D7-72BBB5B030D6}\Microsoft.GetHelp_10.1706.13331.0_x64__8wekyb3d8bbwe.xml
                  • Size 9KB
                  • SHA256 bb39de067132d2ccbb7a3c066743010f070a3c3856f42ccc892da0b40012771e
                  • MD5 SHA1 SHA512 SSDEEP

                  Microsoft.People_10.1902.633.0_x64__8wekyb3d8bbwe.xml

                  • Path C:\ProgramData\{E6FB8490-097E-1893-E5D7-72BBB5B030D6}\Microsoft.People_10.1902.633.0_x64__8wekyb3d8bbwe.xml
                  • Size 15KB
                  • SHA256 0543ea8c8efce3d69431f57affc2cfa44df1b9244a25ed080e4b2014d0419026
                  • MD5 SHA1 SHA512 SSDEEP

                  MicrosoftInternetExplorer2013Backup.xml

                  • Path C:\ProgramData\{E6FB8490-097E-1893-E5D7-72BBB5B030D6}\MicrosoftInternetExplorer2013Backup.xml
                  • Size 2KB
                  • SHA256 37e639679abd36b5b59324eea7aa1d602ff9c287e5c07dfd335ee1a85b68fc50
                  • MD5 SHA1 SHA512

                  MicrosoftOffice2013Office365Win64.xml

                  • Path C:\ProgramData\{E6FB8490-097E-1893-E5D7-72BBB5B030D6}\MicrosoftOffice2013Office365Win64.xml
                  • Size 10KB
                  • SHA256 3fae1d780e8a63d73847dc38412952c238d0e3ca01a97caee718489a3d424893
                  • MD5 SHA1 SHA512 SSDEEP

                  MicrosoftWordpad.xml

                  • Path C:\ProgramData\{E6FB8490-097E-1893-E5D7-72BBB5B030D6}\MicrosoftWordpad.xml
                  • Size 1005B
                  • SHA256 214762acb145e4bbfabd685705707097bd5f5b8dc739c1c18b200d50c5c2f303
                  • MD5 SHA1 SHA512

                  Oreqhqoupyrw.tmp

                  • Path C:\ProgramData\{E6FB8490-097E-1893-E5D7-72BBB5B030D6}\Oreqhqoupyrw.tmp
                  • Size 3.5MB
                  • SHA256 620416713c57d510a4544ae8bb9f9be90395ce5afb99a61183083eea03d1d906
                  • MD5 SHA1 SHA512 SSDEEP

                  edb.chk

                  • Path C:\ProgramData\{E6FB8490-097E-1893-E5D7-72BBB5B030D6}\edb.chk
                  • Size 8KB
                  • SHA256 c2cbce1f9f9bce0fb7dc1c423710d214b8fbf8ac6e34000ccf154c63715a8b53
                  • MD5 SHA1 SHA512 SSDEEP

                  edb.log

                  • Path C:\ProgramData\{E6FB8490-097E-1893-E5D7-72BBB5B030D6}\edb.log
                  • Size 64KB
                  • SHA256 e0d93bd993ec25486d9b4b5bbedc65bc2769a0cd98e62c9995b3915466c223df
                  • MD5 SHA1 SHA512 SSDEEP

                  osver.txt

                  • Path C:\ProgramData\{E6FB8490-097E-1893-E5D7-72BBB5B030D6}\osver.txt
                  • Size 10B
                  • SHA256 4906553c99e9225413bacd029603f2549fe8d972bf389770063f3e932b623d80
                  • MD5 SHA1 SHA512

                  stream.x64.x-none.hash

                  • Path C:\ProgramData\{E6FB8490-097E-1893-E5D7-72BBB5B030D6}\stream.x64.x-none.hash
                  • Size 128B
                  • SHA256 cea19b915390806a9677165794194c66b19e3198a342d51e5a880e7b55768ac7
                  • MD5 SHA1 SHA512

                  103D.exe

                  • Path C:\Users\Admin\AppData\Local\Temp\103D.exe
                  • Size 246KB
                  • SHA256 7bd7346f3ef17dd2c0cc405b6754ddcd7effd90619b94a1715fa90f9a5fea9ac
                  • MD5 SHA1 SHA512 SSDEEP

                  103D.exe

                  • Path C:\Users\Admin\AppData\Local\Temp\103D.exe
                  • Size 246KB
                  • SHA256 7bd7346f3ef17dd2c0cc405b6754ddcd7effd90619b94a1715fa90f9a5fea9ac
                  • MD5 SHA1 SHA512 SSDEEP

                  CEAF.exe

                  • Path C:\Users\Admin\AppData\Local\Temp\CEAF.exe
                  • Size 1010KB
                  • SHA256 f5717aef9a4323816387603920b652a94ac0d9cedef36391cedd9cdcbfef7f60
                  • MD5 SHA1 SHA512 SSDEEP

                  CEAF.exe

                  • Path C:\Users\Admin\AppData\Local\Temp\CEAF.exe
                  • Size 1010KB
                  • SHA256 f5717aef9a4323816387603920b652a94ac0d9cedef36391cedd9cdcbfef7f60
                  • MD5 SHA1 SHA512 SSDEEP

                  Pyupydeoe.tmp

                  • Path C:\Users\Admin\AppData\Local\Temp\Pyupydeoe.tmp
                  • Size 784KB
                  • SHA256 20dc61c5456ea5756f432aebecf74660acebf5ace0f7c8d1b360757ed79075d8
                  • MD5 SHA1 SHA512 SSDEEP

                  Pyupydeoe.tmp

                  • Path C:\Users\Admin\AppData\Local\Temp\Pyupydeoe.tmp
                  • Size 784KB
                  • SHA256 20dc61c5456ea5756f432aebecf74660acebf5ace0f7c8d1b360757ed79075d8
                  • MD5 SHA1 SHA512 SSDEEP

                  fulltrustnotifier.dll

                  • Path \??\c:\program files (x86)\windowspowershell\modules\fulltrustnotifier.dll
                  • Size 784KB
                  • SHA256 8f73f4d6178cbbfefba46bb5b2fc0b336ba9f9e94664a7953b950056fdd6178d
                  • MD5 SHA1 SHA512 SSDEEP

                  memory/1064-154-0x0000000000400000-0x000000000045B000-memory.dmp

                  memory/1064-151-0x00000000005F9000-0x0000000000613000-memory.dmp

                  memory/1064-152-0x0000000002080000-0x00000000020AA000-memory.dmp

                  memory/1064-153-0x0000000000400000-0x000000000045B000-memory.dmp

                  memory/1380-160-0x0000019F91E70000-0x0000019F91FB0000-memory.dmp

                  memory/1380-161-0x0000019F91E70000-0x0000019F91FB0000-memory.dmp

                  memory/1380-162-0x0000000000FD0000-0x000000000126B000-memory.dmp

                  memory/1380-163-0x0000019F90420000-0x0000019F906CC000-memory.dmp

                  memory/2660-164-0x0000000004B00000-0x0000000005652000-memory.dmp

                  memory/2660-156-0x0000000005860000-0x00000000059A0000-memory.dmp

                  memory/2660-157-0x0000000005860000-0x00000000059A0000-memory.dmp

                  memory/2660-158-0x0000000005860000-0x00000000059A0000-memory.dmp

                  memory/2660-149-0x0000000005860000-0x00000000059A0000-memory.dmp

                  memory/2660-150-0x0000000005860000-0x00000000059A0000-memory.dmp

                  memory/2660-148-0x0000000004B00000-0x0000000005652000-memory.dmp

                  memory/2660-155-0x0000000005860000-0x00000000059A0000-memory.dmp

                  memory/3116-168-0x0000000003BE0000-0x0000000004732000-memory.dmp

                  memory/3116-185-0x0000000003BE0000-0x0000000004732000-memory.dmp

                  memory/4180-186-0x0000000004E50000-0x00000000059A2000-memory.dmp

                  memory/4200-143-0x00000000022B0000-0x00000000023C2000-memory.dmp

                  memory/4200-142-0x00000000021D7000-0x00000000022AF000-memory.dmp

                  memory/4200-144-0x0000000000400000-0x0000000000519000-memory.dmp

                  memory/4212-135-0x0000000000400000-0x0000000000451000-memory.dmp

                  memory/4212-134-0x0000000000400000-0x0000000000451000-memory.dmp

                  memory/4212-133-0x00000000005A0000-0x00000000005A9000-memory.dmp

                  memory/4212-132-0x0000000000779000-0x000000000078A000-memory.dmp