Analysis

  • max time kernel
    287s
  • max time network
    298s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    26-09-2024 22:45

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:2128
    • 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:2316
      • C:\Windows\system32\chcp.com
        chcp 65001
        3⤵
          PID:2408
        • C:\Windows\system32\timeout.exe
          timeout /t 3
          3⤵
          • Delays execution with timeout.exe
          PID:2696
        • 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:2824
        • 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:2844
          • 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:2908
            • C:\Windows\system32\chcp.com
              chcp 65001
              5⤵
                PID:2536
              • C:\Windows\system32\netsh.exe
                netsh wlan show profiles
                5⤵
                • Event Triggered Execution: Netsh Helper DLL
                • System Network Configuration Discovery: Wi-Fi Discovery
                PID:2440
              • C:\Windows\system32\findstr.exe
                findstr /R /C:"[ ]:[ ]"
                5⤵
                  PID:2456
              • 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:2516
                • C:\Windows\system32\chcp.com
                  chcp 65001
                  5⤵
                    PID:3040
                  • C:\Windows\system32\netsh.exe
                    netsh wlan show networks mode=bssid
                    5⤵
                    • Event Triggered Execution: Netsh Helper DLL
                    PID:880
                  • C:\Windows\system32\findstr.exe
                    findstr "SSID BSSID Signal"
                    5⤵
                      PID:2040
            • C:\Windows\system32\taskeng.exe
              taskeng.exe {67754DC2-236D-4F54-8878-F1DD8230F226} S-1-5-21-2703099537-420551529-3771253338-1000:XECUDNCD\Admin:Interactive:[1]
              1⤵
              • Suspicious use of WriteProcessMemory
              PID:2196
              • 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:852
                • 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:2528
                  • C:\Windows\system32\chcp.com
                    chcp 65001
                    4⤵
                      PID:788
                    • C:\Windows\system32\netsh.exe
                      netsh wlan show profiles
                      4⤵
                      • Event Triggered Execution: Netsh Helper DLL
                      • System Network Configuration Discovery: Wi-Fi Discovery
                      PID:2188
                    • C:\Windows\system32\findstr.exe
                      findstr /R /C:"[ ]:[ ]"
                      4⤵
                        PID:2408
                    • 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:2972
                      • C:\Windows\system32\chcp.com
                        chcp 65001
                        4⤵
                          PID:1028
                        • C:\Windows\system32\netsh.exe
                          netsh wlan show networks mode=bssid
                          4⤵
                          • Event Triggered Execution: Netsh Helper DLL
                          PID:2440
                        • C:\Windows\system32\findstr.exe
                          findstr "SSID BSSID Signal"
                          4⤵
                            PID:2456

                    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

                      09b96a8ea3104ddce1d2f72b8c2beb69

                      SHA1

                      d92237666b828f218b46f90059a2d819a20de704

                      SHA256

                      225424e1da548f156660ae4c6a39e4b846f67d5ae1dbb78d6998c517691d7026

                      SHA512

                      5b631d3fa5636cdf5fa77a08e4b17cd09537bdf54522133a24ef4adca62ea09b3ab34d5337de3875cc6acbd4bc68565ecfbc3aa865294ae2197212d6f4c85c38

                    • 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\Cab981D.tmp

                      Filesize

                      70KB

                      MD5

                      49aebf8cbd62d92ac215b2923fb1b9f5

                      SHA1

                      1723be06719828dda65ad804298d0431f6aff976

                      SHA256

                      b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

                      SHA512

                      bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

                    • C:\Users\Admin\AppData\Local\Temp\Tar982F.tmp

                      Filesize

                      181KB

                      MD5

                      4ea6026cf93ec6338144661bf1202cd1

                      SHA1

                      a1dec9044f750ad887935a01430bf49322fbdcb7

                      SHA256

                      8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

                      SHA512

                      6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

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

                      Filesize

                      4B

                      MD5

                      cc384c68ad503482fb24e6d1e3b512ae

                      SHA1

                      68ecbf29bc06f656a27369b8fc67a4396c5a9c1a

                      SHA256

                      c08d12b1da2796e8c757add867a8f78501ebacf2a9c15683ccc29f73aed99788

                      SHA512

                      967ed194ac830908927d3b647124dc9e8db89e1da2b277048da01259dfebc507996a5ae057d322f3abfe52925ab628e378954950d3b295db9f009c5eede8cbdb

                    • memory/2128-0-0x000007FEF5E93000-0x000007FEF5E94000-memory.dmp

                      Filesize

                      4KB

                    • memory/2128-1-0x00000000012E0000-0x0000000001306000-memory.dmp

                      Filesize

                      152KB

                    • memory/2128-2-0x000007FEF5E90000-0x000007FEF687C000-memory.dmp

                      Filesize

                      9.9MB

                    • memory/2128-5-0x000007FEF5E90000-0x000007FEF687C000-memory.dmp

                      Filesize

                      9.9MB

                    • memory/2844-9-0x0000000000E80000-0x0000000000EA6000-memory.dmp

                      Filesize

                      152KB