Analysis

  • max time kernel
    139s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    27-09-2024 10:24

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

  • 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 3 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:3012
    • 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:2840
      • C:\Windows\system32\chcp.com
        chcp 65001
        3⤵
          PID:2828
        • C:\Windows\system32\timeout.exe
          timeout /t 3
          3⤵
          • Delays execution with timeout.exe
          PID:2516
        • 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:2672
        • 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:2536
          • 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:2568
            • C:\Windows\system32\chcp.com
              chcp 65001
              5⤵
                PID:276
              • C:\Windows\system32\netsh.exe
                netsh wlan show profiles
                5⤵
                • Event Triggered Execution: Netsh Helper DLL
                • System Network Configuration Discovery: Wi-Fi Discovery
                PID:436
              • C:\Windows\system32\findstr.exe
                findstr /R /C:"[ ]:[ ]"
                5⤵
                  PID:1128
              • 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:640
                • C:\Windows\system32\chcp.com
                  chcp 65001
                  5⤵
                    PID:1400
                  • C:\Windows\system32\netsh.exe
                    netsh wlan show networks mode=bssid
                    5⤵
                    • Event Triggered Execution: Netsh Helper DLL
                    PID:2496
                  • C:\Windows\system32\findstr.exe
                    findstr "SSID BSSID Signal"
                    5⤵
                      PID:2152
            • C:\Windows\system32\taskeng.exe
              taskeng.exe {88FF49D4-57ED-4559-8C0C-224D45AE615C} S-1-5-21-457978338-2990298471-2379561640-1000:WOUOSVRD\Admin:Interactive:[1]
              1⤵
              • Suspicious use of WriteProcessMemory
              PID:1516
              • 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:2452
                • 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:1628
                  • C:\Windows\system32\chcp.com
                    chcp 65001
                    4⤵
                      PID:884
                    • C:\Windows\system32\netsh.exe
                      netsh wlan show profiles
                      4⤵
                      • Event Triggered Execution: Netsh Helper DLL
                      • System Network Configuration Discovery: Wi-Fi Discovery
                      PID:2936
                    • C:\Windows\system32\findstr.exe
                      findstr /R /C:"[ ]:[ ]"
                      4⤵
                        PID:2964
                    • 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:2700
                      • C:\Windows\system32\chcp.com
                        chcp 65001
                        4⤵
                          PID:2676
                        • C:\Windows\system32\netsh.exe
                          netsh wlan show networks mode=bssid
                          4⤵
                          • Event Triggered Execution: Netsh Helper DLL
                          PID:1960
                        • C:\Windows\system32\findstr.exe
                          findstr "SSID BSSID Signal"
                          4⤵
                            PID:1032

                    Network

                    MITRE ATT&CK Enterprise v15

                    Replay Monitor

                    Loading Replay Monitor...

                    Downloads

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

                      Filesize

                      342B

                      MD5

                      85fabe0fec5d9b327d6858cac8aa252e

                      SHA1

                      8ee089113ec4470fe59ce6a3111c18744aaa4e2b

                      SHA256

                      b94aeca45842ff282298dd2ed9852d893270ee695dc547e4040b75306ded0a90

                      SHA512

                      fa237e871b17b3b1bb572ae31590e390e49fe334664df4bb0233c590812163c8bb711e5a22590205043a26bb750791791fc8db3a34df6e2972d6bae563febb42

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

                      Filesize

                      342B

                      MD5

                      4ee827cd0c20378e58d7327ab2a00099

                      SHA1

                      82ab70ba614d2a926dd916f732f3f7ef297342a1

                      SHA256

                      e951e755b1c7c1079587effe4c50e08dd90a28087794f0ff5601486118cbf257

                      SHA512

                      7d0de9abd79223f442e0388cade2457eef5b96032cbf9af148db3bc87b3ea0b49ce8d57b14e876d57e46d2f3af8fcc525f052cd55da2097700e8ffb30fbf48fc

                    • 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\Cab7FBD.tmp

                      Filesize

                      70KB

                      MD5

                      49aebf8cbd62d92ac215b2923fb1b9f5

                      SHA1

                      1723be06719828dda65ad804298d0431f6aff976

                      SHA256

                      b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

                      SHA512

                      bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

                    • C:\Users\Admin\AppData\Local\Temp\Tar7FEE.tmp

                      Filesize

                      181KB

                      MD5

                      4ea6026cf93ec6338144661bf1202cd1

                      SHA1

                      a1dec9044f750ad887935a01430bf49322fbdcb7

                      SHA256

                      8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

                      SHA512

                      6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

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

                      Filesize

                      4B

                      MD5

                      5812f92450ccaf17275500841c70924a

                      SHA1

                      422fd5bfa7b8612b767003817191880edbbae3b2

                      SHA256

                      698eddbc91b225fd427a99e6d0c194e32cb8c99dd4322cb25c5cd52c52184ef2

                      SHA512

                      0021b99046c15fcec2d1802acaeee98cc68262e489f1a774153d8ecb5d7e745c57dfe112f110c6bce7e269b00a73b3f5d80a28f6aa0801bb47fc9b5f491ce293

                    • memory/2536-9-0x0000000000E20000-0x0000000000E46000-memory.dmp

                      Filesize

                      152KB

                    • memory/3012-0-0x000007FEF4F43000-0x000007FEF4F44000-memory.dmp

                      Filesize

                      4KB

                    • memory/3012-1-0x0000000000920000-0x0000000000946000-memory.dmp

                      Filesize

                      152KB

                    • memory/3012-2-0x000007FEF4F40000-0x000007FEF592C000-memory.dmp

                      Filesize

                      9.9MB

                    • memory/3012-5-0x000007FEF4F40000-0x000007FEF592C000-memory.dmp

                      Filesize

                      9.9MB