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Analysis

  • max time kernel
    292s
  • max time network
    297s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    23/09/2024, 05:07

General

  • Target

    91cfd0498b16d33890d8d4f4f1b69daaad5d703f898f46b811f73e92be19e5ff.exe

  • Size

    9.1MB

  • MD5

    1bafb4856a31ae27271fbd2ee1574a4f

  • SHA1

    b8b3649d959524df2c4e8a94434fc0de90f95005

  • SHA256

    91cfd0498b16d33890d8d4f4f1b69daaad5d703f898f46b811f73e92be19e5ff

  • SHA512

    e71e6ab8f548c379f49ae60e8a179ed13d41a9e9862707f15513af083f754a4585b1567491bc08ecbbd3fb700e307b8114600c9aed297932a34b5f0fe1cebe25

  • SSDEEP

    3072:YaHDgOV/hchoS9bFr/l2Z40o6MLKkZPDOxAWP0:YmM8/DS9bF7knxMFb7D

Malware Config

Signatures

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 6 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Looks up external IP address via web service 1 IoCs

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

  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 12 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • System Network Configuration Discovery: Wi-Fi Discovery 1 TTPs 4 IoCs

    Adversaries may search for information about Wi-Fi networks, such as network names and passwords, on compromised systems.

  • Delays execution with timeout.exe 1 IoCs
  • Modifies system certificate store 2 TTPs 5 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\91cfd0498b16d33890d8d4f4f1b69daaad5d703f898f46b811f73e92be19e5ff.exe
    "C:\Users\Admin\AppData\Local\Temp\91cfd0498b16d33890d8d4f4f1b69daaad5d703f898f46b811f73e92be19e5ff.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2484
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C chcp 65001 && timeout /t 3 > NUL && schtasks /create /tn "91cfd0498b16d33890d8d4f4f1b69daaad5d703f898f46b811f73e92be19e5ff" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\Starlabs\91cfd0498b16d33890d8d4f4f1b69daaad5d703f898f46b811f73e92be19e5ff.exe" /rl HIGHEST /f && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\91cfd0498b16d33890d8d4f4f1b69daaad5d703f898f46b811f73e92be19e5ff.exe" &&START "" "C:\Users\Admin\AppData\Local\Starlabs\91cfd0498b16d33890d8d4f4f1b69daaad5d703f898f46b811f73e92be19e5ff.exe"
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:2324
      • C:\Windows\system32\chcp.com
        chcp 65001
        3⤵
          PID:2836
        • C:\Windows\system32\timeout.exe
          timeout /t 3
          3⤵
          • Delays execution with timeout.exe
          PID:1096
        • C:\Windows\system32\schtasks.exe
          schtasks /create /tn "91cfd0498b16d33890d8d4f4f1b69daaad5d703f898f46b811f73e92be19e5ff" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\Starlabs\91cfd0498b16d33890d8d4f4f1b69daaad5d703f898f46b811f73e92be19e5ff.exe" /rl HIGHEST /f
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:2068
        • C:\Users\Admin\AppData\Local\Starlabs\91cfd0498b16d33890d8d4f4f1b69daaad5d703f898f46b811f73e92be19e5ff.exe
          "C:\Users\Admin\AppData\Local\Starlabs\91cfd0498b16d33890d8d4f4f1b69daaad5d703f898f46b811f73e92be19e5ff.exe"
          3⤵
          • Executes dropped EXE
          • Accesses Microsoft Outlook profiles
          • Modifies system certificate store
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1996
          • C:\Windows\system32\cmd.exe
            "cmd.exe" /c chcp 65001 && netsh wlan show profiles|findstr /R /C:"[ ]:[ ]"
            4⤵
            • System Network Configuration Discovery: Wi-Fi Discovery
            • Suspicious use of WriteProcessMemory
            PID:2632
            • C:\Windows\system32\chcp.com
              chcp 65001
              5⤵
                PID:1976
              • C:\Windows\system32\netsh.exe
                netsh wlan show profiles
                5⤵
                • Event Triggered Execution: Netsh Helper DLL
                • System Network Configuration Discovery: Wi-Fi Discovery
                PID:840
              • C:\Windows\system32\findstr.exe
                findstr /R /C:"[ ]:[ ]"
                5⤵
                  PID:2732
              • C:\Windows\system32\cmd.exe
                "cmd.exe" /c chcp 65001 && netsh wlan show networks mode=bssid | findstr "SSID BSSID Signal"
                4⤵
                • Suspicious use of WriteProcessMemory
                PID:1400
                • C:\Windows\system32\chcp.com
                  chcp 65001
                  5⤵
                    PID:580
                  • C:\Windows\system32\netsh.exe
                    netsh wlan show networks mode=bssid
                    5⤵
                    • Event Triggered Execution: Netsh Helper DLL
                    PID:1040
                  • C:\Windows\system32\findstr.exe
                    findstr "SSID BSSID Signal"
                    5⤵
                      PID:1484
            • C:\Windows\system32\taskeng.exe
              taskeng.exe {69E9EF1F-86FE-4F79-A37E-1694F2D8F9EC} S-1-5-21-3551809350-4263495960-1443967649-1000:NNYJZAHP\Admin:Interactive:[1]
              1⤵
              • Suspicious use of WriteProcessMemory
              PID:1676
              • C:\Users\Admin\AppData\Local\Starlabs\91cfd0498b16d33890d8d4f4f1b69daaad5d703f898f46b811f73e92be19e5ff.exe
                C:\Users\Admin\AppData\Local\Starlabs\91cfd0498b16d33890d8d4f4f1b69daaad5d703f898f46b811f73e92be19e5ff.exe
                2⤵
                • Executes dropped EXE
                • Accesses Microsoft Outlook profiles
                • Modifies system certificate store
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of WriteProcessMemory
                • outlook_office_path
                • outlook_win_path
                PID:1812
                • C:\Windows\system32\cmd.exe
                  "cmd.exe" /c chcp 65001 && netsh wlan show profiles|findstr /R /C:"[ ]:[ ]"
                  3⤵
                  • System Network Configuration Discovery: Wi-Fi Discovery
                  • Suspicious use of WriteProcessMemory
                  PID:896
                  • C:\Windows\system32\chcp.com
                    chcp 65001
                    4⤵
                      PID:1200
                    • C:\Windows\system32\netsh.exe
                      netsh wlan show profiles
                      4⤵
                      • Event Triggered Execution: Netsh Helper DLL
                      • System Network Configuration Discovery: Wi-Fi Discovery
                      PID:2296
                    • C:\Windows\system32\findstr.exe
                      findstr /R /C:"[ ]:[ ]"
                      4⤵
                        PID:1600
                    • C:\Windows\system32\cmd.exe
                      "cmd.exe" /c chcp 65001 && netsh wlan show networks mode=bssid | findstr "SSID BSSID Signal"
                      3⤵
                      • Suspicious use of WriteProcessMemory
                      PID:1228
                      • C:\Windows\system32\chcp.com
                        chcp 65001
                        4⤵
                          PID:2480
                        • C:\Windows\system32\netsh.exe
                          netsh wlan show networks mode=bssid
                          4⤵
                          • Event Triggered Execution: Netsh Helper DLL
                          PID:2072
                        • C:\Windows\system32\findstr.exe
                          findstr "SSID BSSID Signal"
                          4⤵
                            PID:2484

                    Network

                    MITRE ATT&CK Enterprise v15

                    Replay Monitor

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                    Downloads

                    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

                      Filesize

                      342B

                      MD5

                      dd46feb484124cddf936e438103f3430

                      SHA1

                      c441fac22298897d33bab69d8b068bbb19730c43

                      SHA256

                      78477c5b37e1abb43f805bef629ffc4660cfe700f03b6692e40cfe75a2cdaf8e

                      SHA512

                      d7b796abc50ab6666dd5fd431339a05ccca6fb7389fa79bcab2609bc3c5f6e40a9c11744ea8d498737c79d50ee043eb55bab6c8a6b821912542ecc02284bb7a1

                    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

                      Filesize

                      342B

                      MD5

                      a308998129885c744fed13ea0580efcd

                      SHA1

                      56cb88e0e0268b9586d0bd4c735bdfae0435aadd

                      SHA256

                      4f27ceac9d68c114092bd649b6688a61153206e571c0e15cfaaf92d580e3f7be

                      SHA512

                      130a66a27c8a3647127599bd9f0267e0fc4d1fd474a723d8eb2d2f98db12e0ba979d7389e5c9e134ef94d187eac89ce3deda5fb574997fddafcc0b6dfb4cb89c

                    • C:\Users\Admin\AppData\Local\Starlabs\91cfd0498b16d33890d8d4f4f1b69daaad5d703f898f46b811f73e92be19e5ff.exe

                      Filesize

                      9.1MB

                      MD5

                      1bafb4856a31ae27271fbd2ee1574a4f

                      SHA1

                      b8b3649d959524df2c4e8a94434fc0de90f95005

                      SHA256

                      91cfd0498b16d33890d8d4f4f1b69daaad5d703f898f46b811f73e92be19e5ff

                      SHA512

                      e71e6ab8f548c379f49ae60e8a179ed13d41a9e9862707f15513af083f754a4585b1567491bc08ecbbd3fb700e307b8114600c9aed297932a34b5f0fe1cebe25

                    • C:\Users\Admin\AppData\Local\Temp\CabD54B.tmp

                      Filesize

                      70KB

                      MD5

                      49aebf8cbd62d92ac215b2923fb1b9f5

                      SHA1

                      1723be06719828dda65ad804298d0431f6aff976

                      SHA256

                      b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

                      SHA512

                      bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

                    • C:\Users\Admin\AppData\Local\Temp\TarD55E.tmp

                      Filesize

                      181KB

                      MD5

                      4ea6026cf93ec6338144661bf1202cd1

                      SHA1

                      a1dec9044f750ad887935a01430bf49322fbdcb7

                      SHA256

                      8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

                      SHA512

                      6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

                    • C:\Users\Admin\AppData\Local\phgsswc3mw\p.dat

                      Filesize

                      4B

                      MD5

                      dbec0010cebb295ffb1d96b0af9d77f8

                      SHA1

                      3eee834d9a1d5a444e7175a0c9dbc0260ec81986

                      SHA256

                      8656fa7508199018142ffdd35da58ead88ab20db3c00dddf633fc842dddb41b7

                      SHA512

                      e4e5a6320915001fde634c4bb6f85f727f2191ce45eaef45dc5a3c74d6b4593e5a7d4cec59cc927555832e96dcc3c9d7e31f88c72509793c20774479b49d3d29

                    • memory/1996-9-0x0000000000230000-0x0000000000256000-memory.dmp

                      Filesize

                      152KB

                    • memory/2484-0-0x000007FEF5B63000-0x000007FEF5B64000-memory.dmp

                      Filesize

                      4KB

                    • memory/2484-1-0x0000000001000000-0x0000000001026000-memory.dmp

                      Filesize

                      152KB

                    • memory/2484-4-0x000007FEF5B60000-0x000007FEF654C000-memory.dmp

                      Filesize

                      9.9MB

                    • memory/2484-5-0x000007FEF5B60000-0x000007FEF654C000-memory.dmp

                      Filesize

                      9.9MB