Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240221-en
  • resource tags

    arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    04-03-2024 00:36

General

  • Target

    WindowsBootManager.exe

  • Size

    168.6MB

  • MD5

    2c11c9fd2618f52433766e7601fc0ab6

  • SHA1

    5431178570a6040912ec7486fbb677b8c423c6f5

  • SHA256

    b29714d2a978638b6ce17ec1c16f8344e46379c93f1e88225bc962419b9d1c04

  • SHA512

    b0a66392aff2f7eb8d019cb9d7c210a9fa76090985eb35d2cb032c44f345705720f6cb1889eff3aa3c2a3b9587f26bfbfc3d247e7a6229ef1882ee0890e95e89

  • SSDEEP

    1572864:sXic4qb6IXgDaJfpEQHgelkLK4z34xGWw0TwW1T/qWhehZvmCtS3JPfyzG49FndX:yVKvWZ8tyx4u

Score
10/10

Malware Config

Signatures

  • Epsilon Stealer

    Information stealer.

  • 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.

  • 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
  • Drops file in Windows directory 1 IoCs
  • Detects videocard installed 1 TTPs 1 IoCs

    Uses WMIC.exe to determine videocard installed.

  • 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\WindowsBootManager.exe
    "C:\Users\Admin\AppData\Local\Temp\WindowsBootManager.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:1516
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /d /s /c "wmic CsProduct Get UUID"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4756
      • C:\Windows\System32\Wbem\WMIC.exe
        wmic CsProduct Get UUID
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2008
    • C:\Users\Admin\AppData\Local\Temp\WindowsBootManager.exe
      "C:\Users\Admin\AppData\Local\Temp\WindowsBootManager.exe" --type=gpu-process --user-data-dir="C:\Users\Admin\AppData\Roaming\WindowsBootManager" --gpu-preferences=WAAAAAAAAADgAAAMAAAAAAAAAAAAAAAAAABgAAAAAAA4AAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGAAAAAAAAAAYAAAAAAAAAAgAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --mojo-platform-channel-handle=1868 --field-trial-handle=1872,i,16043531719296276632,3823088342518220058,262144 --enable-features=kWebSQLAccess --disable-features=SpareRendererForSitePerProcess,WinDelaySpellcheckServiceInit,WinRetrieveSuggestionsOnlyOnDemand --variations-seed-version /prefetch:2
      2⤵
        PID:428
      • C:\Users\Admin\AppData\Local\Temp\WindowsBootManager.exe
        "C:\Users\Admin\AppData\Local\Temp\WindowsBootManager.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --user-data-dir="C:\Users\Admin\AppData\Roaming\WindowsBootManager" --mojo-platform-channel-handle=2468 --field-trial-handle=1872,i,16043531719296276632,3823088342518220058,262144 --enable-features=kWebSQLAccess --disable-features=SpareRendererForSitePerProcess,WinDelaySpellcheckServiceInit,WinRetrieveSuggestionsOnlyOnDemand --variations-seed-version /prefetch:8
        2⤵
          PID:3396
        • C:\Users\Admin\AppData\Local\Temp\WindowsBootManager.exe
          "C:\Users\Admin\AppData\Local\Temp\WindowsBootManager.exe" --type=renderer --user-data-dir="C:\Users\Admin\AppData\Roaming\WindowsBootManager" --app-path="C:\Users\Admin\AppData\Local\Temp\resources\app.asar" --no-sandbox --no-zygote --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=2564 --field-trial-handle=1872,i,16043531719296276632,3823088342518220058,262144 --enable-features=kWebSQLAccess --disable-features=SpareRendererForSitePerProcess,WinDelaySpellcheckServiceInit,WinRetrieveSuggestionsOnlyOnDemand --variations-seed-version /prefetch:1
          2⤵
            PID:3888
          • 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:5084
            • C:\Windows\system32\reg.exe
              C:\Windows\system32\reg.exe QUERY "HKCU\SOFTWARE\Martin Prikryl\WinSCP 2\Sessions"
              3⤵
                PID:1920
            • 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:3128
              • C:\Windows\system32\reg.exe
                C:\Windows\system32\reg.exe QUERY "HKCU\Software\Valve\Steam" /v SteamPath
                3⤵
                  PID:1992
              • 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:5052
                • C:\Windows\System32\Wbem\WMIC.exe
                  wmic /Node:localhost /Namespace:\\root\SecurityCenter2 Path AntiVirusProduct Get displayName /Format:List
                  3⤵
                  • Suspicious use of AdjustPrivilegeToken
                  PID:2852
              • 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:728
                • C:\Windows\System32\Wbem\WMIC.exe
                  wmic path win32_VideoController get name
                  3⤵
                  • Detects videocard installed
                  PID:2588
              • 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:5028
                • C:\Windows\system32\cmd.exe
                  cmd /c chcp 65001
                  3⤵
                  • Suspicious use of WriteProcessMemory
                  PID:916
                  • C:\Windows\system32\chcp.com
                    chcp 65001
                    4⤵
                      PID:3796
                  • C:\Windows\system32\netsh.exe
                    netsh wlan show profiles
                    3⤵
                      PID:972
                  • C:\Users\Admin\AppData\Local\Temp\WindowsBootManager.exe
                    "C:\Users\Admin\AppData\Local\Temp\WindowsBootManager.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=10.0.22000.1 --user-data-dir="C:\Users\Admin\AppData\Roaming\WindowsBootManager" --gpu-preferences=WAAAAAAAAADoAAAMAAAAAAAAAAAAAAAAAABgAAAAAAA4AAAAAAAAAAAAAACEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGAAAAAAAAAAYAAAAAAAAAAgAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --mojo-platform-channel-handle=3268 --field-trial-handle=1872,i,16043531719296276632,3823088342518220058,262144 --enable-features=kWebSQLAccess --disable-features=SpareRendererForSitePerProcess,WinDelaySpellcheckServiceInit,WinRetrieveSuggestionsOnlyOnDemand --variations-seed-version /prefetch:8
                    2⤵
                    • Drops file in System32 directory
                    • Suspicious behavior: EnumeratesProcesses
                    PID:2400

                Network

                MITRE ATT&CK Enterprise v15

                Replay Monitor

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                Downloads

                • C:\Users\Admin\AppData\Local\D3DSCache\98465d2184b2a002\F4EB2D6C-ED2B-4BDD-AD9D-F913287E6768.idx

                  Filesize

                  64KB

                  MD5

                  9ff6aa58ca6d4876c0479d1437b82203

                  SHA1

                  994a9c2b91e1309e031c0a5b075448635796a6cd

                  SHA256

                  20b6a1c87f99bb3ec74c0a18fab602636c0613169851c7ea7f92c34296fa4c82

                  SHA512

                  7fb857145b821c39ef5a3cda0f5f1fd631c835611fe168bb5147229893f8552a0f7cd2b204e987571478c924420552a8472f31cd2e0e8bb39de5756d559bc875

                • C:\Users\Admin\AppData\Local\D3DSCache\98465d2184b2a002\F4EB2D6C-ED2B-4BDD-AD9D-F913287E6768.lock

                  Filesize

                  4B

                  MD5

                  f49655f856acb8884cc0ace29216f511

                  SHA1

                  cb0f1f87ec0455ec349aaa950c600475ac7b7b6b

                  SHA256

                  7852fce59c67ddf1d6b8b997eaa1adfac004a9f3a91c37295de9223674011fba

                  SHA512

                  599e93d25b174524495ed29653052b3590133096404873318f05fd68f4c9a5c9a3b30574551141fbb73d7329d6be342699a17f3ae84554bab784776dfda2d5f8

                • C:\Users\Admin\AppData\Local\D3DSCache\98465d2184b2a002\F4EB2D6C-ED2B-4BDD-AD9D-F913287E6768.val

                  Filesize

                  1008B

                  MD5

                  02f5164a593f0c994ae033d233986d79

                  SHA1

                  194c773f59a21eb088f69921cafedab623896ab1

                  SHA256

                  0eb13f6908354d62c0262f556285931648639492f048fdaea066d018a305c4e7

                  SHA512

                  826c6440bd2033a1de68dc931488040a8d891fc09e86f577b361388f90ee86387b285f11218a06934ed0920a3d583851b3534b8488edc62fadb87b8848918fbb

                • C:\Users\Admin\AppData\Local\Temp\129a1d02-a069-4d2c-ae3c-f852a7766a73.tmp.node

                  Filesize

                  122KB

                  MD5

                  85afc461dcaf3f5898ccba83d59edd81

                  SHA1

                  582dda12636dfd9d73118dbc057d7d803f7585be

                  SHA256

                  89c6360ac30b5db69e4431305c21fb62b69318808e86dd560d16e881be0ae8a3

                  SHA512

                  c4654d2f3c834cfca36e4d10ebca4f33f3b3a8c753663061a3350b450b24fd3741c73f7f1f24f3be625c459cd80890d33a0db27b7e623a1a633579120b8c8d37

                • C:\Users\Admin\AppData\Local\Temp\4d318b56-40e3-470d-a86e-0f5200bca0d1.tmp.node

                  Filesize

                  1.4MB

                  MD5

                  25049b2db4f3ebd16c77d79824f725f4

                  SHA1

                  2318dfb5b8aed91aeae273e269f9503b37a5a932

                  SHA256

                  3589f8850c095cabb74d4c838d78cda2a09f9d1d9f0bc9bf06d44396f6520468

                  SHA512

                  51ca6afc00ce270adbb476df6ad37df320ac6db84bbb221ae17fba12d02b24080e905129d13be710fcffdee4ec74fcb7c80a57373ffd3db7123024b156db85c8

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

                  Filesize

                  231B

                  MD5

                  dec2be4f1ec3592cea668aa279e7cc9b

                  SHA1

                  327cf8ab0c895e10674e00ea7f437784bb11d718

                  SHA256

                  753b99d2b4e8c58bfd10995d0c2c19255fe9c8f53703bb27d1b6f76f1f4e83cc

                  SHA512

                  81728e3d31b72905b3a09c79d1e307c4e8e79d436fcfe7560a8046b46ca4ae994fdfaeb1bc2328e35f418b8128f2e7239289e84350e142146df9cde86b20bb66

                • 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\Roaming\Microsoft\Spelling\en-US\default.dic

                  Filesize

                  2B

                  MD5

                  f3b25701fe362ec84616a93a45ce9998

                  SHA1

                  d62636d8caec13f04e28442a0a6fa1afeb024bbb

                  SHA256

                  b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

                  SHA512

                  98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

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

                  Filesize

                  300B

                  MD5

                  938ddb57985153e5d05f23875adad216

                  SHA1

                  1cfb4ece8ec66f2190c6346e1036226eaeb295b5

                  SHA256

                  f20198f8965f8aabd8f09456d453a9a2e217bd20a44ce287fdd698cda11a9e08

                  SHA512

                  eecc5c14947ac4de32a4064beffd3b264f60bf5227c986ac1cf8fdb8b159c892713b651f4a55c7cf36de92d7ade8cb2cbb1886a17e4af1b142ce5a33af0accd4

                • C:\Users\Admin\AppData\Roaming\WindowsBootManager\Network\Network Persistent State~RFe58823b.TMP

                  Filesize

                  59B

                  MD5

                  2800881c775077e1c4b6e06bf4676de4

                  SHA1

                  2873631068c8b3b9495638c865915be822442c8b

                  SHA256

                  226eec4486509917aa336afebd6ff65777b75b65f1fb06891d2a857a9421a974

                  SHA512

                  e342407ab65cc68f1b3fd706cd0a37680a0864ffd30a6539730180ede2cdcd732cc97ae0b9ef7db12da5c0f83e429df0840dbf7596aca859a0301665e517377b

                • memory/2400-152-0x000002B2D7B00000-0x000002B2D7B01000-memory.dmp

                  Filesize

                  4KB

                • memory/2400-151-0x000002B2D7B00000-0x000002B2D7B01000-memory.dmp

                  Filesize

                  4KB

                • memory/2400-153-0x000002B2D7B00000-0x000002B2D7B01000-memory.dmp

                  Filesize

                  4KB

                • memory/2400-155-0x000002B2D7B00000-0x000002B2D7B01000-memory.dmp

                  Filesize

                  4KB

                • memory/2400-154-0x000002B2D7B00000-0x000002B2D7B01000-memory.dmp

                  Filesize

                  4KB

                • memory/2400-157-0x000002B2D7B00000-0x000002B2D7B01000-memory.dmp

                  Filesize

                  4KB

                • memory/2400-156-0x000002B2D7B00000-0x000002B2D7B01000-memory.dmp

                  Filesize

                  4KB

                • memory/2400-146-0x000002B2D7B00000-0x000002B2D7B01000-memory.dmp

                  Filesize

                  4KB

                • memory/2400-147-0x000002B2D7B00000-0x000002B2D7B01000-memory.dmp

                  Filesize

                  4KB

                • memory/2400-145-0x000002B2D7B00000-0x000002B2D7B01000-memory.dmp

                  Filesize

                  4KB