Resubmissions

24-02-2024 20:00

240224-yrcnqsea3y 10

Analysis

  • max time kernel
    153s
  • max time network
    161s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-02-2024 20:00

General

  • Target

    true.exe

  • Size

    168.6MB

  • MD5

    e3261b4def8532387e1871c844daa26b

  • SHA1

    51b1fc5b40ef952cce623efb3ad6fc38fd71c6dc

  • SHA256

    1363160f04aa979afa98d40853138f3ae8bec6d081e23b5bc0e97e8ea29d7e07

  • SHA512

    0ddd2085a1808c8d38278af169121e2f4ff1014c7a391b5e17dbabad672ffe2ae61a886df60b7ce33b3b8829a54b90779fbda9811c0ca8e070bb0953c64d8659

  • SSDEEP

    1572864:KXic4qb6IXgDaJfpEQHgelkLK4z34xGWw0TwW1T/qWhehZvmCtS3JPfyzG49FndX:UVKvWZ8tyx4u

Malware Config

Signatures

  • Epsilon Stealer

    Information stealer.

  • Checks computer location settings 2 TTPs 2 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.

  • Drops file in System32 directory 2 IoCs
  • Detects videocard installed 1 TTPs 1 IoCs

    Uses WMIC.exe to determine videocard installed.

  • Enumerates processes with tasklist 1 TTPs 1 IoCs
  • Kills process with taskkill 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\true.exe
    "C:\Users\Admin\AppData\Local\Temp\true.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:496
    • C:\Users\Admin\AppData\Local\Temp\true.exe
      "C:\Users\Admin\AppData\Local\Temp\true.exe" --type=gpu-process --user-data-dir="C:\Users\Admin\AppData\Roaming\true" --gpu-preferences=WAAAAAAAAADgAAAMAAAAAAAAAAAAAAAAAABgAAAAAAA4AAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGAAAAAAAAAAYAAAAAAAAAAgAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --mojo-platform-channel-handle=1896 --field-trial-handle=1900,i,8500918562091335232,13721144892444665777,262144 --enable-features=kWebSQLAccess --disable-features=SpareRendererForSitePerProcess,WinDelaySpellcheckServiceInit,WinRetrieveSuggestionsOnlyOnDemand --variations-seed-version /prefetch:2
      2⤵
        PID:4948
      • C:\Users\Admin\AppData\Local\Temp\true.exe
        "C:\Users\Admin\AppData\Local\Temp\true.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --user-data-dir="C:\Users\Admin\AppData\Roaming\true" --mojo-platform-channel-handle=1976 --field-trial-handle=1900,i,8500918562091335232,13721144892444665777,262144 --enable-features=kWebSQLAccess --disable-features=SpareRendererForSitePerProcess,WinDelaySpellcheckServiceInit,WinRetrieveSuggestionsOnlyOnDemand --variations-seed-version /prefetch:8
        2⤵
          PID:2432
        • C:\Users\Admin\AppData\Local\Temp\true.exe
          "C:\Users\Admin\AppData\Local\Temp\true.exe" --type=renderer --user-data-dir="C:\Users\Admin\AppData\Roaming\true" --app-path="C:\Users\Admin\AppData\Local\Temp\resources\app.asar" --enable-sandbox --first-renderer-process --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=4 --mojo-platform-channel-handle=2500 --field-trial-handle=1900,i,8500918562091335232,13721144892444665777,262144 --enable-features=kWebSQLAccess --disable-features=SpareRendererForSitePerProcess,WinDelaySpellcheckServiceInit,WinRetrieveSuggestionsOnlyOnDemand --variations-seed-version /prefetch:1
          2⤵
          • Checks computer location settings
          PID:632
        • 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⤵
            PID:780
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic /Node:localhost /Namespace:\\root\SecurityCenter2 Path AntiVirusProduct Get displayName /Format:List
              3⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:3436
          • 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⤵
              PID:3284
              • C:\Windows\system32\reg.exe
                C:\Windows\system32\reg.exe QUERY "HKCU\Software\Valve\Steam" /v SteamPath
                3⤵
                  PID:2204
              • 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⤵
                  PID:4088
                  • C:\Windows\system32\reg.exe
                    C:\Windows\system32\reg.exe QUERY "HKCU\SOFTWARE\Martin Prikryl\WinSCP 2\Sessions"
                    3⤵
                      PID:4376
                  • C:\Windows\system32\cmd.exe
                    C:\Windows\system32\cmd.exe /d /s /c "wmic path win32_VideoController get name"
                    2⤵
                      PID:2800
                      • C:\Windows\System32\Wbem\WMIC.exe
                        wmic path win32_VideoController get name
                        3⤵
                        • Detects videocard installed
                        • Suspicious use of AdjustPrivilegeToken
                        PID:2584
                    • C:\Windows\system32\cmd.exe
                      C:\Windows\system32\cmd.exe /d /s /c "cmd /c chcp 65001>nul && netsh wlan show profiles"
                      2⤵
                        PID:2140
                        • C:\Windows\system32\cmd.exe
                          cmd /c chcp 65001
                          3⤵
                            PID:4840
                            • C:\Windows\system32\chcp.com
                              chcp 65001
                              4⤵
                                PID:116
                            • C:\Windows\system32\netsh.exe
                              netsh wlan show profiles
                              3⤵
                                PID:5044
                            • C:\Windows\system32\cmd.exe
                              C:\Windows\system32\cmd.exe /d /s /c "taskkill /IM msedge.exe /F"
                              2⤵
                                PID:1820
                                • C:\Windows\system32\taskkill.exe
                                  taskkill /IM msedge.exe /F
                                  3⤵
                                  • Kills process with taskkill
                                  PID:1684
                              • 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:3224
                                  • 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:4684
                                • C:\Windows\system32\cmd.exe
                                  C:\Windows\system32\cmd.exe /d /s /c "tasklist"
                                  2⤵
                                    PID:3400
                                    • C:\Windows\system32\tasklist.exe
                                      tasklist
                                      3⤵
                                      • Enumerates processes with tasklist
                                      PID:4260
                                  • C:\Users\Admin\AppData\Local\Temp\true.exe
                                    "C:\Users\Admin\AppData\Local\Temp\true.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\true" --gpu-preferences=WAAAAAAAAADoAAAMAAAAAAAAAAAAAAAAAABgAAAAAAA4AAAAAAAAAAAAAACEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGAAAAAAAAAAYAAAAAAAAAAgAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --mojo-platform-channel-handle=2484 --field-trial-handle=1900,i,8500918562091335232,13721144892444665777,262144 --enable-features=kWebSQLAccess --disable-features=SpareRendererForSitePerProcess,WinDelaySpellcheckServiceInit,WinRetrieveSuggestionsOnlyOnDemand --variations-seed-version /prefetch:8
                                    2⤵
                                    • Drops file in System32 directory
                                    • Suspicious behavior: EnumeratesProcesses
                                    PID:2212

                                Network

                                MITRE ATT&CK Enterprise v15

                                Replay Monitor

                                Loading Replay Monitor...

                                Downloads

                                • C:\Users\Admin\AppData\Local\Temp\c20a71e5-1e0d-41cb-9c97-130cf3dd9f57.tmp.node

                                  Filesize

                                  1.6MB

                                  MD5

                                  0c33db6d12c03f303f62a92287208adf

                                  SHA1

                                  d8800f55714cd124e92aa8bec56dff6cf15e5741

                                  SHA256

                                  be68f8d8db7b21c1b0492d5ed717d7a6a3552e0b78b36fe205c97f538388c339

                                  SHA512

                                  11ce175c8eafa4f446d13403c3274dc6a891c379e36e87b2268b2503de9dde8da04f06a4f5c1e94b5e2b2c6c0de0a500396a685554f98b5ee25b96e6251b6f06

                                • C:\Users\Admin\AppData\Local\Temp\epsilon-Admin\AutoFill Data\All Autofill Data.txt

                                  Filesize

                                  249B

                                  MD5

                                  cf7e4a12f932a3fddddacc8b10e1f1b0

                                  SHA1

                                  db6f9bc2be5e0905086b7b7b07109ef8d67b24ee

                                  SHA256

                                  1b6d3f6ad849e115bf20175985bed9bcfc6ec206e288b97ac14c3a23b5d28a4b

                                  SHA512

                                  fab79f26c1841310cc61e2f8336ca05281a9252a34a3c240e500c8775840374edb0a42094c64aa38a29ca79e1cafa114d6f1bbe3009060d32f8c1df9f088c12c

                                • C:\Users\Admin\AppData\Local\Temp\epsilon-Admin\Passwords\All Passwords.txt

                                  Filesize

                                  231B

                                  MD5

                                  dec2be4f1ec3592cea668aa279e7cc9b

                                  SHA1

                                  327cf8ab0c895e10674e00ea7f437784bb11d718

                                  SHA256

                                  753b99d2b4e8c58bfd10995d0c2c19255fe9c8f53703bb27d1b6f76f1f4e83cc

                                  SHA512

                                  81728e3d31b72905b3a09c79d1e307c4e8e79d436fcfe7560a8046b46ca4ae994fdfaeb1bc2328e35f418b8128f2e7239289e84350e142146df9cde86b20bb66

                                • C:\Users\Admin\AppData\Local\Temp\ff85e2fb-8ee8-420f-91a8-102475fd0fb4.tmp.node

                                  Filesize

                                  122KB

                                  MD5

                                  51a1d690ef64d9c11b9ec8c298fe6f18

                                  SHA1

                                  047d5110ca39693e7d929f957783a26bb0d0675f

                                  SHA256

                                  56b742217f5976c890e61bd9d05ce0b03097d272f0fd4816d6ec1bcf305d9c5a

                                  SHA512

                                  581a0007799938d1568d9ed9580029a957c194c16367a346dbc4c8b51e79aaf9cabfb84c8e5a92f13c94649a1aa202eebc80ee1901250c3e7554a4d105accba8

                                • C:\Users\Admin\AppData\Roaming\Microsoft\Spelling\en-US\default.dic

                                  Filesize

                                  2B

                                  MD5

                                  f3b25701fe362ec84616a93a45ce9998

                                  SHA1

                                  d62636d8caec13f04e28442a0a6fa1afeb024bbb

                                  SHA256

                                  b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

                                  SHA512

                                  98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

                                • C:\Users\Admin\AppData\Roaming\true\Network\Network Persistent State

                                  Filesize

                                  300B

                                  MD5

                                  d55699455d511ac9a9c54c529c707b3e

                                  SHA1

                                  04591ff9e1d0b27be436388b29c21e651d3ee01c

                                  SHA256

                                  a71fafea597609ac1e869ef8080bb5680d8f4fae64646ddb03846b3d12e82fed

                                  SHA512

                                  faf93a8dca2249a21ede910bf45dd1d10e8e7e6345620c8770109fbbd9488fcaa77dbd863034fca7d442e22119a4dc347afa756f2b1e8a29199ebc53138b01cb

                                • C:\Users\Admin\AppData\Roaming\true\Network\Network Persistent State~RFe58b6d8.TMP

                                  Filesize

                                  59B

                                  MD5

                                  2800881c775077e1c4b6e06bf4676de4

                                  SHA1

                                  2873631068c8b3b9495638c865915be822442c8b

                                  SHA256

                                  226eec4486509917aa336afebd6ff65777b75b65f1fb06891d2a857a9421a974

                                  SHA512

                                  e342407ab65cc68f1b3fd706cd0a37680a0864ffd30a6539730180ede2cdcd732cc97ae0b9ef7db12da5c0f83e429df0840dbf7596aca859a0301665e517377b

                                • memory/632-53-0x00007FFBF4320000-0x00007FFBF4321000-memory.dmp

                                  Filesize

                                  4KB

                                • memory/632-43-0x00007FFBF4AD0000-0x00007FFBF4AD1000-memory.dmp

                                  Filesize

                                  4KB

                                • memory/2212-141-0x0000023DB6110000-0x0000023DB6111000-memory.dmp

                                  Filesize

                                  4KB

                                • memory/2212-142-0x0000023DB6110000-0x0000023DB6111000-memory.dmp

                                  Filesize

                                  4KB

                                • memory/2212-143-0x0000023DB6110000-0x0000023DB6111000-memory.dmp

                                  Filesize

                                  4KB

                                • memory/2212-147-0x0000023DB6110000-0x0000023DB6111000-memory.dmp

                                  Filesize

                                  4KB

                                • memory/2212-148-0x0000023DB6110000-0x0000023DB6111000-memory.dmp

                                  Filesize

                                  4KB

                                • memory/2212-149-0x0000023DB6110000-0x0000023DB6111000-memory.dmp

                                  Filesize

                                  4KB

                                • memory/2212-150-0x0000023DB6110000-0x0000023DB6111000-memory.dmp

                                  Filesize

                                  4KB

                                • memory/2212-151-0x0000023DB6110000-0x0000023DB6111000-memory.dmp

                                  Filesize

                                  4KB

                                • memory/2212-152-0x0000023DB6110000-0x0000023DB6111000-memory.dmp

                                  Filesize

                                  4KB

                                • memory/2212-153-0x0000023DB6110000-0x0000023DB6111000-memory.dmp

                                  Filesize

                                  4KB