Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/12/2022, 17:20

General

  • Target
    file.exe
  • Size 256KB
  • Sample221231-vwe3waaa76
  • SHA256 ea352e5f678ca67dd9210261cabdd2eb17723ab94a38f9111ac86186b012340b
  • 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
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 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 10 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 48 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • 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 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 64 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:4656
  • C:\Users\Admin\AppData\Local\Temp\E9F7.exe
    C:\Users\Admin\AppData\Local\Temp\E9F7.exe
    1⤵
    • Executes dropped EXE
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:3424
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3424 -s 1016
      2⤵
      • Program crash
      PID:3548
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3424 -s 1080
      2⤵
      • Program crash
      PID:4068
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3424 -s 1160
      2⤵
      • Program crash
      PID:4052
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3424 -s 1088
      2⤵
      • Program crash
      PID:1940
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3424 -s 1088
      2⤵
      • Program crash
      PID:3360
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3424 -s 1016
      2⤵
      • Program crash
      PID:1092
    • C:\Users\Admin\AppData\Local\Temp\Iqpoqhfidqa.exe
      "C:\Users\Admin\AppData\Local\Temp\Iqpoqhfidqa.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:3940
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3940 -s 472
        3⤵
        • Program crash
        PID:1336
    • 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:960
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3424 -s 1472
      2⤵
      • Program crash
      PID:1320
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3424 -s 1492
      2⤵
      • Program crash
      PID:3660
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3424 -ip 3424
    1⤵
      PID:1956
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 3424 -ip 3424
      1⤵
        PID:3816
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 3424 -ip 3424
        1⤵
          PID:3596
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 3424 -ip 3424
          1⤵
            PID:1996
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 3424 -ip 3424
            1⤵
              PID:3924
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 592 -p 3424 -ip 3424
              1⤵
                PID:4528
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 604 -p 3424 -ip 3424
                1⤵
                  PID:4832
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 628 -p 3940 -ip 3940
                  1⤵
                    PID:1496
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --no-first-run --no-default-browser-check --silent-launch --disable-backgrounding-occluded-windows --disable-background-timer-throttling --ran-launcher --profile-directory="Default"
                    1⤵
                    • Suspicious use of NtSetInformationThreadHideFromDebugger
                    • Enumerates system info in registry
                    • Suspicious use of FindShellTrayWindow
                    • Suspicious use of SetWindowsHookEx
                    • Suspicious use of WriteProcessMemory
                    PID:4712
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=89.0.4389.114 --initial-client-data=0xfc,0x100,0x104,0xd8,0x108,0x7ffe1bed4f50,0x7ffe1bed4f60,0x7ffe1bed4f70
                      2⤵
                        PID:396
                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --field-trial-handle=1632,6924410274965671030,5694542217265837425,131072 --gpu-preferences=SAAAAAAAAADgAAAwAAAAAAAAAAAAAAAAAABgAAAAAAAoAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB4AAAAAAAAAHgAAAAAAAAAKAAAAAQAAAAgAAAAAAAAACgAAAAAAAAAMAAAAAAAAAA4AAAAAAAAABAAAAAAAAAAAAAAAAUAAAAQAAAAAAAAAAAAAAAGAAAAEAAAAAAAAAABAAAABQAAABAAAAAAAAAAAQAAAAYAAAAIAAAAAAAAAAgAAAAAAAAA --mojo-platform-channel-handle=1668 /prefetch:2
                        2⤵
                          PID:1716
                        • C:\Program Files\Google\Chrome\Application\chrome.exe
                          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=1632,6924410274965671030,5694542217265837425,131072 --lang=en-US --service-sandbox-type=network --mojo-platform-channel-handle=2020 /prefetch:8
                          2⤵
                            PID:732
                          • C:\Program Files\Google\Chrome\Application\chrome.exe
                            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --field-trial-handle=1632,6924410274965671030,5694542217265837425,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2308 /prefetch:8
                            2⤵
                              PID:2976
                            • C:\Windows\system32\WerFault.exe
                              C:\Windows\system32\WerFault.exe -u -p 4712 -s 3168
                              2⤵
                              • Program crash
                              PID:3860
                          • C:\Windows\System32\CompPkgSrv.exe
                            C:\Windows\System32\CompPkgSrv.exe -Embedding
                            1⤵
                              PID:3196
                            • C:\Windows\system32\WerFault.exe
                              C:\Windows\system32\WerFault.exe -pss -s 668 -p 4712 -ip 4712
                              1⤵
                                PID:4792
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 612 -p 3424 -ip 3424
                                1⤵
                                  PID:3648

                                Network

                                      MITRE ATT&CK Enterprise v6

                                      Replay Monitor

                                      Loading Replay Monitor...

                                      Downloads

                                      AdobeSFX.log

                                      • Path C:\Users\Admin\AppData\Local\Temp\AdobeSFX.log
                                      • Size 1KB
                                      • SHA256 ab5bbad92eb5b118a83152c34f7d011cd7ebd55e0774e7649b5bd6084c6bb807
                                      • MD5 SHA1 SHA512

                                      E9F7.exe

                                      • Path C:\Users\Admin\AppData\Local\Temp\E9F7.exe
                                      • Size 6.6MB
                                      • SHA256 55054d7dd67fa5e02e014e92761470d3b43f1d6a42846a6c17b266ccca38eaf5
                                      • MD5 SHA1 SHA512 SSDEEP

                                      E9F7.exe

                                      • Path C:\Users\Admin\AppData\Local\Temp\E9F7.exe
                                      • Size 6.6MB
                                      • SHA256 55054d7dd67fa5e02e014e92761470d3b43f1d6a42846a6c17b266ccca38eaf5
                                      • MD5 SHA1 SHA512 SSDEEP

                                      Iqpoqhfidqa.exe

                                      • Path C:\Users\Admin\AppData\Local\Temp\Iqpoqhfidqa.exe
                                      • Size 1.4MB
                                      • SHA256 57c3c745da3abd3efb910c157bad430f5dc74a3aab48334e4f8f1a93c68d7d67
                                      • MD5 SHA1 SHA512 SSDEEP

                                      Iqpoqhfidqa.exe

                                      • Path C:\Users\Admin\AppData\Local\Temp\Iqpoqhfidqa.exe
                                      • Size 1.4MB
                                      • SHA256 57c3c745da3abd3efb910c157bad430f5dc74a3aab48334e4f8f1a93c68d7d67
                                      • MD5 SHA1 SHA512 SSDEEP

                                      Iqpoqhfidqa.tmp

                                      • Path C:\Users\Admin\AppData\Local\Temp\Iqpoqhfidqa.tmp
                                      • Size 3.5MB
                                      • SHA256 c34565954052e885c9978fc2b50cf32cc98a67ba9851689101ed5bfffa9bdce4
                                      • MD5 SHA1 SHA512 SSDEEP

                                      JavaDeployReg.log

                                      • Path C:\Users\Admin\AppData\Local\Temp\JavaDeployReg.log
                                      • Size 25KB
                                      • SHA256 c3db936d22f55c93214a38a5cc2b7a042b298822db68af0b4a574df37a1820db
                                      • MD5 SHA1 SHA512 SSDEEP

                                      TMKNGOMU-20220812-1924.log

                                      • Path C:\Users\Admin\AppData\Local\Temp\TMKNGOMU-20220812-1924.log
                                      • Size 56KB
                                      • SHA256 1226acee43898580e53859127ed657800319973cb60df51155e5c8a7ce45e895
                                      • MD5 SHA1 SHA512 SSDEEP

                                      dd_vcredistMSI50B8.txt

                                      • Path C:\Users\Admin\AppData\Local\Temp\dd_vcredistMSI50B8.txt
                                      • Size 426KB
                                      • SHA256 37c69c02974b85d856e00765ff6b978bc55f03f1254b5f50754d5acd7c32c296
                                      • MD5 SHA1 SHA512 SSDEEP

                                      jawshtml.html

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

                                      wct1F1D.tmp

                                      • Path C:\Users\Admin\AppData\Local\Temp\wct1F1D.tmp
                                      • Size 62KB
                                      • SHA256 094754a618b102b7ad0800dd4c9c02c882cf2d1e7996ba864f422fa4312427e1
                                      • MD5 SHA1 SHA512 SSDEEP

                                      wctA1E8.tmp

                                      • Path C:\Users\Admin\AppData\Local\Temp\wctA1E8.tmp
                                      • Size 62KB
                                      • SHA256 094754a618b102b7ad0800dd4c9c02c882cf2d1e7996ba864f422fa4312427e1
                                      • MD5 SHA1 SHA512 SSDEEP

                                      memory/684-195-0x00000000109D0000-0x0000000010AF8000-memory.dmp

                                      memory/684-190-0x00000000109D0000-0x0000000010AF8000-memory.dmp

                                      memory/684-189-0x00000000109D0000-0x0000000010AF8000-memory.dmp

                                      memory/684-188-0x000000000D3E2000-0x000000000D3EB000-memory.dmp

                                      memory/960-173-0x0000000002AE0000-0x0000000003632000-memory.dmp

                                      memory/960-172-0x0000000003780000-0x00000000038C0000-memory.dmp

                                      memory/960-171-0x0000000003780000-0x00000000038C0000-memory.dmp

                                      memory/960-162-0x0000000003780000-0x00000000038C0000-memory.dmp

                                      memory/960-161-0x0000000003780000-0x00000000038C0000-memory.dmp

                                      memory/960-159-0x0000000002AE0000-0x0000000003632000-memory.dmp

                                      memory/960-160-0x0000000000600000-0x0000000001032000-memory.dmp

                                      memory/3424-147-0x0000000004B00000-0x0000000005652000-memory.dmp

                                      memory/3424-148-0x0000000004B00000-0x0000000005652000-memory.dmp

                                      memory/3424-156-0x0000000005740000-0x0000000005880000-memory.dmp

                                      memory/3424-155-0x0000000004B00000-0x0000000005652000-memory.dmp

                                      memory/3424-154-0x0000000005740000-0x0000000005880000-memory.dmp

                                      memory/3424-153-0x0000000005740000-0x0000000005880000-memory.dmp

                                      memory/3424-152-0x0000000005740000-0x0000000005880000-memory.dmp

                                      memory/3424-151-0x0000000005740000-0x0000000005880000-memory.dmp

                                      memory/3424-150-0x0000000005740000-0x0000000005880000-memory.dmp

                                      memory/3424-183-0x0000000000400000-0x0000000000CD0000-memory.dmp

                                      memory/3424-149-0x0000000005740000-0x0000000005880000-memory.dmp

                                      memory/3424-194-0x0000000000400000-0x0000000000CD0000-memory.dmp

                                      memory/3424-193-0x0000000004B00000-0x0000000005652000-memory.dmp

                                      memory/3424-143-0x0000000000400000-0x0000000000CD0000-memory.dmp

                                      memory/3424-142-0x0000000000400000-0x0000000000CD0000-memory.dmp

                                      memory/3424-141-0x0000000003050000-0x0000000003913000-memory.dmp

                                      memory/3424-140-0x00000000029CE000-0x0000000003044000-memory.dmp

                                      memory/3424-157-0x0000000005740000-0x0000000005880000-memory.dmp

                                      memory/3424-139-0x0000000000400000-0x0000000000CD0000-memory.dmp

                                      memory/3940-174-0x0000000002410000-0x0000000002565000-memory.dmp

                                      memory/3940-187-0x00000000027F0000-0x0000000002924000-memory.dmp

                                      memory/3940-182-0x00000000027F0000-0x0000000002924000-memory.dmp

                                      memory/3940-181-0x00000000022C3000-0x0000000002403000-memory.dmp

                                      memory/3940-184-0x0000000000400000-0x0000000000588000-memory.dmp

                                      memory/3940-185-0x00000000027F0000-0x0000000002924000-memory.dmp

                                      memory/3940-186-0x00000000027F0000-0x0000000002924000-memory.dmp

                                      memory/3940-180-0x00000000027F0000-0x0000000002924000-memory.dmp

                                      memory/3940-179-0x00000000027F0000-0x0000000002924000-memory.dmp

                                      memory/3940-175-0x00000000027F0000-0x0000000002924000-memory.dmp

                                      memory/3940-191-0x0000000002410000-0x0000000002565000-memory.dmp

                                      memory/4656-134-0x0000000000400000-0x000000000045E000-memory.dmp

                                      memory/4656-135-0x0000000000400000-0x000000000045E000-memory.dmp

                                      memory/4656-132-0x000000000060D000-0x000000000061E000-memory.dmp

                                      memory/4656-133-0x0000000002190000-0x0000000002199000-memory.dmp