Analysis

  • max time kernel
    142s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/09/2024, 21:14

General

  • Target

    BrowserTool.exe

  • Size

    99.6MB

  • MD5

    f489556fdde15b99e202a06f0cf513aa

  • SHA1

    dc7991c837e336484d9bcd56fbe42129cc5a62d0

  • SHA256

    0b5fe211d558daa7d54207d2869f53d0a91ae16397343fd2605fd3a0f292dd21

  • SHA512

    dd87414e68ba61a6821d27853c45399193520d090fc9f69f7c4bd5ba1cc591e0384d680c454525d99d95f0b880cc50dffcca201d838d3c8f2d595ba27eda0cdd

  • SSDEEP

    786432:d0urM/MqRmUT0kBKpM6i8nOhxYjjCmrkIvchTJCILjXvxscyQZfbyrBovl+4BPbG:d0XvQAsKlJGkzR21vYdsj

Malware Config

Signatures

  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Unsecured Credentials: Credentials In Files 1 TTPs

    Steal credentials from unsecured files.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • Enumerates processes with tasklist 1 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 8 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • GoLang User-Agent 1 IoCs

    Uses default user-agent string defined by GoLang HTTP packages.

  • Kills process with taskkill 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 60 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:3540
      • C:\Users\Admin\AppData\Local\Temp\BrowserTool.exe
        "C:\Users\Admin\AppData\Local\Temp\BrowserTool.exe"
        2⤵
        • Suspicious use of NtCreateUserProcessOtherParentProcess
        • Checks computer location settings
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4204
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc QQBkAGQALQBNAHAAUAByAGUAZgBlAHIAZQBuAGMAZQAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEMAOgBcAFUAcwBlAHIAcwBcAEEAZABtAGkAbgBcAEEAcABwAEQAYQB0AGEAXABMAG8AYwBhAGwAXABUAGUAbQBwAFwAQgByAG8AdwBzAGUAcgBUAG8AbwBsAC4AZQB4AGUAOwAgAEEAZABkAC0ATQBwAFAAcgBlAGYAZQByAGUAbgBjAGUAIAAtAEUAeABjAGwAdQBzAGkAbwBuAFAAcgBvAGMAZQBzAHMAIABDADoAXABVAHMAZQByAHMAXABBAGQAbQBpAG4AXABBAHAAcABEAGEAdABhAFwATABvAGMAYQBsAFwAVABlAG0AcABcAEIAcgBvAHcAcwBlAHIAVABvAG8AbAAuAGUAeABlADsA
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2704
      • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_compiler.exe
        "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_compiler.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3924
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          WSCOGJJEZZWL
          3⤵
          • Suspicious use of SetThreadContext
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2080
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            CLWBQWZGWHNV
            4⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3044
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            ERDCLVBLGHDZ
            4⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:4148
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            UKOYHOXSCFOF
            4⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:3152
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            WKSKQXYIHZAW
            4⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:3696
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            CZTOBSSSVFEN
            4⤵
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:3160
            • C:\Windows\system32\tasklist.exe
              tasklist /FI "IMAGENAME eq msedge.exe" /NH /FO CSV
              5⤵
              • Enumerates processes with tasklist
              • Suspicious use of AdjustPrivilegeToken
              PID:4588
            • C:\Windows\System32\Wbem\wmic.exe
              wmic process where "processid='5072' or processid='3276' or processid='2112' or processid='4168' or processid='2780' or processid='2080' or processid='3044' or processid='4148' or processid='3152' or processid='3696' or processid='3160' or processid='3692' or processid='1956'" get CommandLine,ProcessId
              5⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:2992
            • C:\Windows\system32\taskkill.exe
              taskkill /F /PID 5072
              5⤵
              • Kills process with taskkill
              • Suspicious use of AdjustPrivilegeToken
              PID:1508
            • C:\Windows\system32\taskkill.exe
              taskkill /F /PID 4168
              5⤵
              • Kills process with taskkill
              • Suspicious use of AdjustPrivilegeToken
              PID:1504
            • C:\Windows\system32\taskkill.exe
              taskkill /F /PID 2112
              5⤵
              • Kills process with taskkill
              • Suspicious use of AdjustPrivilegeToken
              PID:976
            • C:\Windows\system32\taskkill.exe
              taskkill /F /PID 3276
              5⤵
              • Kills process with taskkill
              • Suspicious use of AdjustPrivilegeToken
              PID:5024
            • C:\Windows\system32\taskkill.exe
              taskkill /F /PID 2780
              5⤵
              • Kills process with taskkill
              • Suspicious use of AdjustPrivilegeToken
              PID:2196
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            PAJERKRNKQTS
            4⤵
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:3692
            • C:\Windows\system32\tasklist.exe
              tasklist /FI "IMAGENAME eq chrome.exe" /NH /FO CSV
              5⤵
              • Enumerates processes with tasklist
              • Suspicious use of AdjustPrivilegeToken
              PID:4312
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            VPFKRGWJTVIA
            4⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1956
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4440,i,11251706013556949551,5157034131170452377,262144 --variations-seed-version --mojo-platform-channel-handle=4140 /prefetch:8
      1⤵
        PID:1032

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_v3ffzccp.0vt.ps1

              Filesize

              60B

              MD5

              d17fe0a3f47be24a6453e9ef58c94641

              SHA1

              6ab83620379fc69f80c0242105ddffd7d98d5d9d

              SHA256

              96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

              SHA512

              5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

            • memory/2704-1095-0x00007FFD3C110000-0x00007FFD3CBD1000-memory.dmp

              Filesize

              10.8MB

            • memory/2704-1094-0x00000271DB510000-0x00000271DB532000-memory.dmp

              Filesize

              136KB

            • memory/2704-1096-0x00007FFD3C110000-0x00007FFD3CBD1000-memory.dmp

              Filesize

              10.8MB

            • memory/2704-1103-0x00007FFD3C110000-0x00007FFD3CBD1000-memory.dmp

              Filesize

              10.8MB

            • memory/3924-1107-0x000001D5C1BF0000-0x000001D5C22C9000-memory.dmp

              Filesize

              6.8MB

            • memory/4204-19-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-41-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-3-0x00007FFD3C113000-0x00007FFD3C115000-memory.dmp

              Filesize

              8KB

            • memory/4204-4-0x00007FFD3C110000-0x00007FFD3CBD1000-memory.dmp

              Filesize

              10.8MB

            • memory/4204-5-0x00000271A0740000-0x00000271A0EF2000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-9-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-11-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-17-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-21-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-27-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-30-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-39-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-37-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-35-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-31-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-33-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-25-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-23-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-15-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-13-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-1-0x0000027180000000-0x0000027186390000-memory.dmp

              Filesize

              99.6MB

            • memory/4204-7-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-6-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-2-0x00007FFD3C110000-0x00007FFD3CBD1000-memory.dmp

              Filesize

              10.8MB

            • memory/4204-47-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-55-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-59-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-65-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-64-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-61-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-69-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-67-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-57-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-54-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-51-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-44-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-49-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-45-0x00000271A0740000-0x00000271A0EEC000-memory.dmp

              Filesize

              7.7MB

            • memory/4204-1080-0x00007FFD3C110000-0x00007FFD3CBD1000-memory.dmp

              Filesize

              10.8MB

            • memory/4204-1081-0x00000271A0EF0000-0x00000271A161C000-memory.dmp

              Filesize

              7.2MB

            • memory/4204-1082-0x0000027187CB0000-0x0000027187CFC000-memory.dmp

              Filesize

              304KB

            • memory/4204-1086-0x00007FFD3C110000-0x00007FFD3CBD1000-memory.dmp

              Filesize

              10.8MB

            • memory/4204-1087-0x00007FFD3C110000-0x00007FFD3CBD1000-memory.dmp

              Filesize

              10.8MB

            • memory/4204-1088-0x00007FFD3C110000-0x00007FFD3CBD1000-memory.dmp

              Filesize

              10.8MB

            • memory/4204-1104-0x00000271A3240000-0x00000271A3294000-memory.dmp

              Filesize

              336KB

            • memory/4204-1106-0x00007FFD3C110000-0x00007FFD3CBD1000-memory.dmp

              Filesize

              10.8MB

            • memory/4204-0-0x00007FFD3C113000-0x00007FFD3C115000-memory.dmp

              Filesize

              8KB