Resubmissions

23/03/2024, 20:50

240323-zmtl5aeg7z10

23/03/2024, 01:09

240323-bh4drsbd5610

22/03/2024, 21:56

240322-1tr8baca3v10

22/03/2024, 02:58

240322-dglhnsff4910

Analysis

  • max time kernel
    151s
  • max time network
    161s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/03/2024, 02:58

General

  • Target
    azkzkzz.exe
  • Size 168.4MB
  • Sample240322-dglhnsff49
  • SHA256 a04e61c7d07593d8cd0981f1a209790df34a06ce2f6b8b1c3056da501a08734c
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Epsilon Stealer

    Information stealer.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 2 IoCs

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

  • Detects videocard installed 1 TTPs 1 IoCs

    Uses WMIC.exe to determine videocard installed.

  • Enumerates processes with tasklist 1 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\azkzkzz.exe
    "C:\Users\Admin\AppData\Local\Temp\azkzkzz.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:5004
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /d /s /c "wmic CsProduct Get UUID"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2356
      • C:\Windows\System32\Wbem\WMIC.exe
        wmic CsProduct Get UUID
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:692
    • C:\Users\Admin\AppData\Local\Temp\azkzkzz.exe
      "C:\Users\Admin\AppData\Local\Temp\azkzkzz.exe" --type=gpu-process --user-data-dir="C:\Users\Admin\AppData\Roaming\azkzkzz" --gpu-preferences=WAAAAAAAAADgAAAMAAAAAAAAAAAAAAAAAABgAAAAAAA4AAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGAAAAAAAAAAYAAAAAAAAAAgAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --mojo-platform-channel-handle=1752 --field-trial-handle=1756,i,17749780577759476065,8318785031235145848,262144 --enable-features=kWebSQLAccess --disable-features=SpareRendererForSitePerProcess,WinDelaySpellcheckServiceInit,WinRetrieveSuggestionsOnlyOnDemand --variations-seed-version /prefetch:2
      2⤵
        PID:216
      • C:\Users\Admin\AppData\Local\Temp\azkzkzz.exe
        "C:\Users\Admin\AppData\Local\Temp\azkzkzz.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --user-data-dir="C:\Users\Admin\AppData\Roaming\azkzkzz" --mojo-platform-channel-handle=1752 --field-trial-handle=1756,i,17749780577759476065,8318785031235145848,262144 --enable-features=kWebSQLAccess --disable-features=SpareRendererForSitePerProcess,WinDelaySpellcheckServiceInit,WinRetrieveSuggestionsOnlyOnDemand --variations-seed-version /prefetch:3
        2⤵
          PID:3388
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /d /s /c "C:\Windows\system32\reg.exe QUERY "HKCU\SOFTWARE\Martin Prikryl\WinSCP 2\Sessions""
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:4428
          • C:\Windows\system32\reg.exe
            C:\Windows\system32\reg.exe QUERY "HKCU\SOFTWARE\Martin Prikryl\WinSCP 2\Sessions"
            3⤵
              PID:1488
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /d /s /c "C:\Windows\system32\reg.exe QUERY "HKCU\Software\Valve\Steam" /v SteamPath"
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2352
            • C:\Windows\system32\reg.exe
              C:\Windows\system32\reg.exe QUERY "HKCU\Software\Valve\Steam" /v SteamPath
              3⤵
                PID:4352
            • C:\Windows\system32\cmd.exe
              C:\Windows\system32\cmd.exe /d /s /c "tasklist"
              2⤵
              • Suspicious use of WriteProcessMemory
              PID:1460
              • C:\Windows\system32\tasklist.exe
                tasklist
                3⤵
                • Enumerates processes with tasklist
                • Suspicious use of AdjustPrivilegeToken
                PID:2336
            • C:\Windows\system32\cmd.exe
              C:\Windows\system32\cmd.exe /d /s /c "wmic /Node:localhost /Namespace:\\root\SecurityCenter2 Path AntiVirusProduct Get displayName /Format:List"
              2⤵
              • Suspicious use of WriteProcessMemory
              PID:2776
              • C:\Windows\System32\Wbem\WMIC.exe
                wmic /Node:localhost /Namespace:\\root\SecurityCenter2 Path AntiVirusProduct Get displayName /Format:List
                3⤵
                • Suspicious use of AdjustPrivilegeToken
                PID:4656
            • C:\Windows\system32\cmd.exe
              C:\Windows\system32\cmd.exe /d /s /c "wmic path win32_VideoController get name"
              2⤵
              • Suspicious use of WriteProcessMemory
              PID:3720
              • C:\Windows\System32\Wbem\WMIC.exe
                wmic path win32_VideoController get name
                3⤵
                • Detects videocard installed
                PID:3344
            • C:\Windows\system32\cmd.exe
              C:\Windows\system32\cmd.exe /d /s /c "cmd /c chcp 65001>nul && netsh wlan show profiles"
              2⤵
              • Suspicious use of WriteProcessMemory
              PID:3916
              • C:\Windows\system32\cmd.exe
                cmd /c chcp 65001
                3⤵
                • Suspicious use of WriteProcessMemory
                PID:1016
                • C:\Windows\system32\chcp.com
                  chcp 65001
                  4⤵
                    PID:4064
                • C:\Windows\system32\netsh.exe
                  netsh wlan show profiles
                  3⤵
                    PID:1832
                • C:\Windows\system32\cmd.exe
                  C:\Windows\system32\cmd.exe /d /s /c "C:\Windows\system32\reg.exe ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v WindowsBootManager /t REG_SZ /d C:\Users\Admin\AppData\Local\Microsoft\Windows\0\WindowsBootManager.exe /f"
                  2⤵
                    PID:2260
                    • C:\Windows\system32\reg.exe
                      C:\Windows\system32\reg.exe ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v WindowsBootManager /t REG_SZ /d C:\Users\Admin\AppData\Local\Microsoft\Windows\0\WindowsBootManager.exe /f
                      3⤵
                      • Adds Run key to start application
                      PID:4184
                  • C:\Windows\system32\cmd.exe
                    C:\Windows\system32\cmd.exe /d /s /c "tasklist"
                    2⤵
                      PID:3828
                      • C:\Windows\system32\tasklist.exe
                        tasklist
                        3⤵
                        • Enumerates processes with tasklist
                        PID:1536
                    • C:\Users\Admin\AppData\Local\Temp\azkzkzz.exe
                      "C:\Users\Admin\AppData\Local\Temp\azkzkzz.exe" --type=gpu-process --disable-gpu-sandbox --use-gl=disabled --gpu-vendor-id=4318 --gpu-device-id=140 --gpu-sub-system-id=0 --gpu-revision=0 --gpu-driver-version=10.0.19041.546 --user-data-dir="C:\Users\Admin\AppData\Roaming\azkzkzz" --gpu-preferences=WAAAAAAAAADoAAAMAAAAAAAAAAAAAAAAAABgAAAAAAA4AAAAAAAAAAAAAABEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGAAAAAAAAAAYAAAAAAAAAAgAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --mojo-platform-channel-handle=1232 --field-trial-handle=1756,i,17749780577759476065,8318785031235145848,262144 --enable-features=kWebSQLAccess --disable-features=SpareRendererForSitePerProcess,WinDelaySpellcheckServiceInit,WinRetrieveSuggestionsOnlyOnDemand --variations-seed-version /prefetch:8
                      2⤵
                      • Suspicious behavior: EnumeratesProcesses
                      PID:3612

                  Network

                        MITRE ATT&CK Enterprise v15

                        Replay Monitor

                        Loading Replay Monitor...

                        Downloads

                        2d37ecd7-327f-4a2d-b546-9c7ffadac943.tmp.node

                        • Path C:\Users\Admin\AppData\Local\Temp\2d37ecd7-327f-4a2d-b546-9c7ffadac943.tmp.node
                        • Size 1.6MB
                        • SHA256 2b3a468813b7288751e8a0883423162c1a69d27d3640bcd7dd797f7686f44312
                        • MD5 SHA1 SHA512 SSDEEP

                        813b65ef-f7c8-4815-bdf8-46f2f584fb32.tmp.node

                        • Path C:\Users\Admin\AppData\Local\Temp\813b65ef-f7c8-4815-bdf8-46f2f584fb32.tmp.node
                        • Size 126KB
                        • SHA256 affeacd41ee589f4915998c242fd1fa063395354259b3c642730e360910b3961
                        • MD5 SHA1 SHA512 SSDEEP

                        Web Data

                        • Path C:\Users\Admin\AppData\Local\Temp\Web Data
                        • Size 116KB
                        • SHA256 8d782aa65de6db3538a14da82216e96d5e0a3c60496726e3541a8165bccc65f8
                        • MD5 SHA1 SHA512 SSDEEP

                        Antivirus.txt

                        • Path C:\Users\Admin\AppData\Local\Temp\epsilon-Admin\Antivirus.txt
                        • Size 231B
                        • SHA256 753b99d2b4e8c58bfd10995d0c2c19255fe9c8f53703bb27d1b6f76f1f4e83cc
                        • MD5 SHA1 SHA512

                        memory/3612-67-0x000001AA6E4C0000-0x000001AA6E4C1000-memory.dmp

                        memory/3612-65-0x000001AA6E4C0000-0x000001AA6E4C1000-memory.dmp

                        memory/3612-66-0x000001AA6E4C0000-0x000001AA6E4C1000-memory.dmp

                        memory/3612-72-0x000001AA6E4C0000-0x000001AA6E4C1000-memory.dmp

                        memory/3612-71-0x000001AA6E4C0000-0x000001AA6E4C1000-memory.dmp

                        memory/3612-73-0x000001AA6E4C0000-0x000001AA6E4C1000-memory.dmp

                        memory/3612-75-0x000001AA6E4C0000-0x000001AA6E4C1000-memory.dmp

                        memory/3612-74-0x000001AA6E4C0000-0x000001AA6E4C1000-memory.dmp

                        memory/3612-76-0x000001AA6E4C0000-0x000001AA6E4C1000-memory.dmp

                        memory/3612-77-0x000001AA6E4C0000-0x000001AA6E4C1000-memory.dmp