Resubmissions

06/11/2025, 18:41

251106-xb8ksstqav10

04/11/2025, 15:22

251104-ssaymsdm5t10

Analysis

  • max time kernel
    149s
  • max time network
    113s
  • platform
    windows11-21h2_x64
  • resource
    win11-20250619-en
  • resource tags

    arch:x64arch:x86image:win11-20250619-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    04/11/2025, 15:22

General

  • Target
    eaf6f9bf7233e2ef0ae136bdf09eb78d494568b277f7aa53a73830a070ebaaa1.exe
  • Size 336KB
  • Sample251104-ssaymsdm5t
  • SHA256 eaf6f9bf7233e2ef0ae136bdf09eb78d494568b277f7aa53a73830a070ebaaa1
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Detects MaskGramStealer payload 64 IoCs
  • MaskGramStealer

    MaskGramStealer is an information stealer.

  • Maskgram_stealer family
  • 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 cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Enumerates system info in registry 2 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\eaf6f9bf7233e2ef0ae136bdf09eb78d494568b277f7aa53a73830a070ebaaa1.exe
    "C:\Users\Admin\AppData\Local\Temp\eaf6f9bf7233e2ef0ae136bdf09eb78d494568b277f7aa53a73830a070ebaaa1.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:5076
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe" --headless --log-level=3
      2⤵
      • Enumerates system info in registry
      • Suspicious use of WriteProcessMemory
      PID:4976
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler --user-data-dir=C:\Users\Admin\AppData\Local\Temp\HeadlessChrome4976240608031 /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler --database=C:\Users\Admin\AppData\Local\Temp\HeadlessChrome4976240608031\Crashpad --metrics-dir=C:\Users\Admin\AppData\Local\Temp\HeadlessChrome4976240608031 --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=133.0.6943.60 --initial-client-data=0x27c,0x280,0x284,0x234,0x288,0x7ffd6315dcf8,0x7ffd6315dd04,0x7ffd6315dd10
        3⤵
          PID:3080
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --headless --log-level=3
        2⤵
        • Enumerates system info in registry
        • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of WriteProcessMemory
        PID:4972
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler --user-data-dir=C:\Users\Admin\AppData\Local\Temp\HeadlessEdge4972240608109 /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler --database=C:\Users\Admin\AppData\Local\Temp\HeadlessEdge4972240608109\Crashpad --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=133.0.6943.99 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 --annotation=prod=Edge --annotation=ver=133.0.3065.69 --initial-client-data=0x35c,0x360,0x364,0x358,0x394,0x7ffd6351f208,0x7ffd6351f214,0x7ffd6351f220
          3⤵
            PID:3960
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --string-annotations --noerrdialogs --always-read-main-dll --field-trial-handle=2144,i,12611283146075950242,5369638949117076561,262144 --disable-features=PaintHolding --variations-seed-version --log-level=3 --mojo-platform-channel-handle=2140 /prefetch:11
            3⤵
              PID:2724
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --headless --string-annotations --noerrdialogs --gpu-preferences=UAAAAAAAAADgAAAEAAAAAAAAAAAAAAAAAABgAAEAAAAAAAAAAAAAAAAAAAACAAAAAAAAAAAAAAAAAAAAAAAAABAAAAAAAAAAEAAAAAAAAAAIAAAAAAAAAAgAAAAAAAAA --always-read-main-dll --field-trial-handle=2112,i,12611283146075950242,5369638949117076561,262144 --disable-features=PaintHolding --variations-seed-version --log-level=3 --mojo-platform-channel-handle=2068 /prefetch:2
              3⤵
                PID:5068
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --string-annotations --noerrdialogs --always-read-main-dll --field-trial-handle=2496,i,12611283146075950242,5369638949117076561,262144 --disable-features=PaintHolding --variations-seed-version --log-level=3 --mojo-platform-channel-handle=2492 /prefetch:13
                3⤵
                  PID:3024
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --string-annotations --noerrdialogs --instant-process --disable-databases --video-capture-use-gpu-memory-buffer --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --always-read-main-dll --field-trial-handle=3284,i,12611283146075950242,5369638949117076561,262144 --disable-features=PaintHolding --variations-seed-version --log-level=3 --mojo-platform-channel-handle=3280 /prefetch:1
                  3⤵
                    PID:3228
              • C:\Program Files\Google\Chrome\Application\133.0.6943.60\elevation_service.exe
                "C:\Program Files\Google\Chrome\Application\133.0.6943.60\elevation_service.exe"
                1⤵
                  PID:3312
                • C:\Program Files (x86)\Microsoft\Edge\Application\133.0.3065.69\elevation_service.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\133.0.3065.69\elevation_service.exe"
                  1⤵
                    PID:2368

                  Network

                        MITRE ATT&CK Enterprise v16

                        Replay Monitor

                        Loading Replay Monitor...

                        Downloads

                        settings.dat

                        • Path C:\Users\Admin\AppData\Local\Temp\HeadlessEdge4972240608109\Crashpad\settings.dat
                        • Size 280B
                        • SHA256 82b8eadd4507ef90b056eb77151328c9a7fe73c8d953c1ee7904bdc52feae0df
                        • MD5 SHA1 SHA512

                        settings.dat

                        • Path C:\Users\Admin\AppData\Local\Temp\HeadlessEdge4972240608109\Crashpad\settings.dat
                        • Size 280B
                        • SHA256 7ddaa90e3b9b9e7bb0c834c9fb13c92419ec57eda43d1ca4e2bdfa71b52f583f
                        • MD5 SHA1 SHA512

                        throttle_store.dat

                        • Path C:\Users\Admin\AppData\Local\Temp\HeadlessEdge4972240608109\Crashpad\throttle_store.dat
                        • Size 20B
                        • SHA256 41c91a9c93d76295746a149dce7ebb3b9ee2cb551d84365fff108e59a61cc304
                        • MD5 SHA1 SHA512

                        MANIFEST-000001

                        • Path C:\Users\Admin\AppData\Local\Temp\HeadlessEdge4972240608109\Default\Site Characteristics Database\MANIFEST-000001
                        • Size 41B
                        • SHA256 f9d31b278e215eb0d0e9cd709edfa037e828f36214ab7906f612160fead4b2b4
                        • MD5 SHA1 SHA512

                        CURRENT

                        • Path C:\Users\Admin\AppData\Local\Temp\HeadlessEdge4972240608109\Default\Sync Data\LevelDB\CURRENT
                        • Size 16B
                        • SHA256 0f1bad70c7bd1e0a69562853ec529355462fcd0423263a3d39d6d0d70b780443
                        • MD5 SHA1 SHA512

                        Local State

                        • Path C:\Users\Admin\AppData\Local\Temp\HeadlessEdge4972240608109\Local State
                        • Size 3KB
                        • SHA256 b9d97679cf534d1a92fa1ef2f9a6ccd7d9e8a9cc9b9d84effcb81f0607878cd1
                        • MD5 SHA1 SHA512

                        Local State

                        • Path C:\Users\Admin\AppData\Local\Temp\HeadlessEdge4972240608109\Local State
                        • Size 4KB
                        • SHA256 527294af7598e8551f3ed6d771cb258961b977f70f7a4900a53d799b1125d2ac
                        • MD5 SHA1 SHA512 SSDEEP

                        Local State~RFe576590.TMP

                        • Path C:\Users\Admin\AppData\Local\Temp\HeadlessEdge4972240608109\Local State~RFe576590.TMP
                        • Size 1KB
                        • SHA256 a507b3d72e026ce655e95388e455743db31d0c1cbe75534b0d74bd6dc570c9b1
                        • MD5 SHA1 SHA512

                        memory/5076-65-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-57-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-113-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-111-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-109-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-107-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-105-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-103-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-101-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-99-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-97-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-95-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-93-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-91-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-89-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-87-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-86-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-83-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-84-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-81-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-79-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-77-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-75-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-73-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-71-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-69-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-67-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-117-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-63-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-61-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-59-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-115-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-55-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-51-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-49-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-45-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-43-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-41-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-39-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-37-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-33-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-31-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-29-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-27-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-25-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-23-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-21-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-19-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-17-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-15-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-121-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-13-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-11-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-9-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-7-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-119-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-123-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-47-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-35-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-5-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-3-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-1-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-0-0x0000000000010000-0x000000000002E000-memory.dmp

                        memory/5076-53-0x0000000000010000-0x000000000002E000-memory.dmp