Analysis

  • max time kernel
    164s
  • max time network
    178s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    10/03/2022, 13:54

General

  • Target
    6103c8edfaf2ac9ed2ad45771731e442169d17128aa2e1d89f5318b4272e5889.exe
  • Size 3.9MB
  • Sample220310-q7rtlaafbk
  • SHA256 6103c8edfaf2ac9ed2ad45771731e442169d17128aa2e1d89f5318b4272e5889
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • socelars

C2
  • http://www.iyiqian.com/

  • http://www.xxhufdc.top/

  • http://www.uefhkice.xyz/

  • http://www.wygexde.xyz/

Extracted

Family
  • smokeloader

Version
  • 2020

C2
  • http://ppcspb.com/upload/

  • http://mebbing.com/upload/

  • http://twcamel.com/upload/

  • http://howdycash.com/upload/

  • http://lahuertasonora.com/upload/

  • http://kpotiques.com/upload/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Socelars

    Socelars is an infostealer targeting browser cookies and credit card credentials.

  • Socelars Payload 2 IoCs
  • Executes dropped EXE 12 IoCs
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • VMProtect packed file 3 IoCs

    Detects executables packed with VMProtect commercial packer.

  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Loads dropped DLL 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Looks up geolocation information via web service

    Uses a legitimate geolocation service to find the infected system's geolocation info.

  • AutoIT Executable 2 IoCs

    AutoIT scripts compiled to PE executables.

  • 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 3 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Kills process with taskkill 1 IoCs
  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 13 IoCs
  • Suspicious use of SendNotifyMessage 8 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6103c8edfaf2ac9ed2ad45771731e442169d17128aa2e1d89f5318b4272e5889.exe
    "C:\Users\Admin\AppData\Local\Temp\6103c8edfaf2ac9ed2ad45771731e442169d17128aa2e1d89f5318b4272e5889.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1744
    • C:\Users\Admin\AppData\Local\Temp\Install.exe
      "C:\Users\Admin\AppData\Local\Temp\Install.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2156
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c taskkill /f /im chrome.exe
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3288
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /f /im chrome.exe
          4⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:2944
    • C:\Users\Admin\AppData\Local\Temp\KRSetp.exe
      "C:\Users\Admin\AppData\Local\Temp\KRSetp.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:3092
    • C:\Users\Admin\AppData\Local\Temp\Folder.exe
      "C:\Users\Admin\AppData\Local\Temp\Folder.exe"
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:3984
      • C:\Windows\SysWOW64\rUNdlL32.eXe
        "C:\Windows\system32\rUNdlL32.eXe" "C:\Users\Admin\AppData\Local\Temp\install.dll",init
        3⤵
        • Loads dropped DLL
        PID:2388
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2388 -s 600
          4⤵
          • Program crash
          PID:1124
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2388 -s 600
          4⤵
          • Program crash
          PID:1436
    • C:\Users\Admin\AppData\Local\Temp\Files.exe
      "C:\Users\Admin\AppData\Local\Temp\Files.exe"
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:2692
      • C:\Users\Admin\AppData\Local\Temp\RarSFX0\File.exe
        "C:\Users\Admin\AppData\Local\Temp\RarSFX0\File.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:2128
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://iplogger.org/1Rxji7
        3⤵
        • Enumerates system info in registry
        • Modifies registry class
        • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of WriteProcessMemory
        PID:3876
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0x108,0x10c,0x110,0xe4,0x114,0x7ffe677646f8,0x7ffe67764708,0x7ffe67764718
          4⤵
            PID:3936
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2276,16511283494442354699,14964303175491752721,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2296 /prefetch:2
            4⤵
              PID:916
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=2276,16511283494442354699,14964303175491752721,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2344 /prefetch:3
              4⤵
                PID:4040
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --field-trial-handle=2276,16511283494442354699,14964303175491752721,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=3452 /prefetch:8
                4⤵
                  PID:3992
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2276,16511283494442354699,14964303175491752721,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3924 /prefetch:1
                  4⤵
                    PID:1604
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2276,16511283494442354699,14964303175491752721,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3936 /prefetch:1
                    4⤵
                      PID:3952
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --field-trial-handle=2276,16511283494442354699,14964303175491752721,131072 --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=5376 /prefetch:8
                      4⤵
                        PID:3920
                  • C:\Users\Admin\AppData\Local\Temp\jg3_3uag.exe
                    "C:\Users\Admin\AppData\Local\Temp\jg3_3uag.exe"
                    2⤵
                    • Executes dropped EXE
                    • Suspicious use of AdjustPrivilegeToken
                    PID:1340
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -u -p 1340 -s 1772
                      3⤵
                      • Program crash
                      PID:3396
                  • C:\Users\Admin\AppData\Local\Temp\pzyh.exe
                    "C:\Users\Admin\AppData\Local\Temp\pzyh.exe"
                    2⤵
                    • Executes dropped EXE
                    • Adds Run key to start application
                    • Suspicious use of WriteProcessMemory
                    PID:1788
                    • C:\Users\Admin\AppData\Local\Temp\jfiag3g_gg.exe
                      C:\Users\Admin\AppData\Local\Temp\jfiag3g_gg.exe /scookiestxt C:\Users\Admin\AppData\Local\Temp\fj4ghga23_fsa.txt
                      3⤵
                      • Executes dropped EXE
                      PID:3924
                    • C:\Users\Admin\AppData\Local\Temp\jfiag3g_gg.exe
                      C:\Users\Admin\AppData\Local\Temp\jfiag3g_gg.exe /scookiestxt C:\Users\Admin\AppData\Local\Temp\fj4ghga23_fsa.txt
                      3⤵
                      • Executes dropped EXE
                      • Suspicious behavior: EnumeratesProcesses
                      PID:2200
                  • C:\Users\Admin\AppData\Local\Temp\pub2.exe
                    "C:\Users\Admin\AppData\Local\Temp\pub2.exe"
                    2⤵
                    • Executes dropped EXE
                    • Loads dropped DLL
                    • Checks SCSI registry key(s)
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious behavior: MapViewOfSection
                    PID:3108
                  • C:\Users\Admin\AppData\Local\Temp\IDWCH1.exe
                    "C:\Users\Admin\AppData\Local\Temp\IDWCH1.exe"
                    2⤵
                    • Executes dropped EXE
                    • Suspicious use of WriteProcessMemory
                    PID:772
                    • C:\Users\Admin\AppData\Local\Temp\is-14NAU.tmp\IDWCH1.tmp
                      "C:\Users\Admin\AppData\Local\Temp\is-14NAU.tmp\IDWCH1.tmp" /SL5="$80046,179430,95744,C:\Users\Admin\AppData\Local\Temp\IDWCH1.exe"
                      3⤵
                      • Executes dropped EXE
                      • Loads dropped DLL
                      PID:1468
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 2388 -ip 2388
                  1⤵
                    PID:3812
                  • C:\Windows\System32\CompPkgSrv.exe
                    C:\Windows\System32\CompPkgSrv.exe -Embedding
                    1⤵
                      PID:2316
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 1340 -ip 1340
                      1⤵
                        PID:624

                      Network

                            MITRE ATT&CK Enterprise v6

                            Replay Monitor

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                            Downloads

                            memory/772-159-0x0000000000400000-0x000000000041E000-memory.dmp

                            memory/772-155-0x0000000000400000-0x000000000041E000-memory.dmp

                            memory/1340-212-0x0000000000B40000-0x0000000000B48000-memory.dmp

                            memory/1340-196-0x0000000003610000-0x0000000003620000-memory.dmp

                            memory/1340-211-0x0000000000B20000-0x0000000000B28000-memory.dmp

                            memory/1340-153-0x0000000000400000-0x00000000005E2000-memory.dmp

                            memory/1340-234-0x0000000000930000-0x0000000000938000-memory.dmp

                            memory/1340-233-0x0000000000930000-0x0000000000938000-memory.dmp

                            memory/1340-210-0x00000000009D0000-0x00000000009D8000-memory.dmp

                            memory/1340-209-0x0000000000930000-0x0000000000938000-memory.dmp

                            memory/1340-202-0x00000000037B0000-0x00000000037C0000-memory.dmp

                            memory/1340-208-0x0000000000910000-0x0000000000918000-memory.dmp

                            memory/1468-161-0x0000000000770000-0x0000000000771000-memory.dmp

                            memory/2516-174-0x0000000000B20000-0x0000000000B36000-memory.dmp

                            memory/3092-137-0x00007FFE66E80000-0x00007FFE67941000-memory.dmp

                            memory/3092-136-0x0000000000A30000-0x0000000000A60000-memory.dmp

                            memory/3092-140-0x000000001CEC0000-0x000000001CEC2000-memory.dmp

                            memory/3108-168-0x0000000000D70000-0x0000000000D79000-memory.dmp

                            memory/3108-169-0x0000000000400000-0x0000000000C05000-memory.dmp

                            memory/3108-167-0x0000000000E6D000-0x0000000000E76000-memory.dmp

                            memory/3108-162-0x0000000000E6D000-0x0000000000E76000-memory.dmp

                            memory/3992-186-0x00007FFE85560000-0x00007FFE85561000-memory.dmp