Analysis

  • max time kernel
    149s
  • max time network
    139s
  • platform
    windows11-21h2_x64
  • resource
    win11-20251015-en
  • resource tags

    arch:x64arch:x86image:win11-20251015-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    17/10/2025, 21:25

General

  • Target
    payload_2223.exe
  • Size 5.2MB
  • Sample251017-z91c7ae14c
  • SHA256 cabf319baf5f3c955f6e251d101bdc61a1d7c3ced40e3f313c7d43f8571c00dd
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • hijackloader

Attributes
  • directory

    %APPDATA%\EBJWriter

  • inject_dll

    %windir%\SysWOW64\pla.dll

xor.hex

Signatures

  • DeerStealer

    DeerStealer is a sophisticated information stealer written in C++.

  • Deerstealer family
  • Detects DeerStealer 4 IoCs
  • Detects DonutLoader 1 IoCs
  • Detects HijackLoader (aka IDAT Loader) 1 IoCs
  • DonutLoader

    DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.

  • Donutloader family
  • HijackLoader

    HijackLoader is a multistage loader first seen in 2023.

  • Hijackloader family
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 3 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 15 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 26 IoCs
  • Suspicious use of SendNotifyMessage 12 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\payload_2223.exe
    "C:\Users\Admin\AppData\Local\Temp\payload_2223.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:136
    • C:\Users\Admin\AppData\Local\Temp\is-QMOL6.tmp\payload_2223.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-QMOL6.tmp\payload_2223.tmp" /SL5="$E022A,4445496,882176,C:\Users\Admin\AppData\Local\Temp\payload_2223.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1568
      • C:\Users\Admin\AppData\Local\Temp\is-LHJBM.tmp\Matri_Debug29.exe
        "C:\Users\Admin\AppData\Local\Temp\is-LHJBM.tmp\Matri_Debug29.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:5640
        • C:\ProgramData\EBJWriter\Matri_Debug29.exe
          C:\ProgramData\EBJWriter\Matri_Debug29.exe
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:1808
          • C:\Users\Admin\AppData\Local\Temp\XenoAnaly.exe
            C:\Users\Admin\AppData\Local\Temp\XenoAnaly.exe
            5⤵
            • Loads dropped DLL
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of WriteProcessMemory
            PID:5536
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe"
              6⤵
              • Drops file in Windows directory
              • Enumerates system info in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of FindShellTrayWindow
              • Suspicious use of SendNotifyMessage
              • Suspicious use of WriteProcessMemory
              PID:1440
              • 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\Google\Chrome\User Data" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=133.0.6943.60 --initial-client-data=0xfc,0x100,0x104,0xd8,0x108,0x7ff98d03dcf8,0x7ff98d03dd04,0x7ff98d03dd10
                7⤵
                  PID:3720
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --string-annotations --field-trial-handle=1980,i,5891046167296078590,11560364765520266804,262144 --variations-seed-version=20251015-090059.375000 --mojo-platform-channel-handle=2100 /prefetch:11
                  7⤵
                    PID:4408
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --string-annotations --gpu-preferences=UAAAAAAAAADgAAAEAAAAAAAAAAAAAAAAAABgAAEAAAAAAAAAAAAAAAAAAAACAAAAAAAAAAAAAAAAAAAAAAAAABAAAAAAAAAAEAAAAAAAAAAIAAAAAAAAAAgAAAAAAAAA --field-trial-handle=2072,i,5891046167296078590,11560364765520266804,262144 --variations-seed-version=20251015-090059.375000 --mojo-platform-channel-handle=2068 /prefetch:2
                    7⤵
                      PID:3728
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --string-annotations --field-trial-handle=2372,i,5891046167296078590,11560364765520266804,262144 --variations-seed-version=20251015-090059.375000 --mojo-platform-channel-handle=2536 /prefetch:13
                      7⤵
                        PID:5008
                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --string-annotations --enable-dinosaur-easter-egg-alt-images --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --field-trial-handle=3236,i,5891046167296078590,11560364765520266804,262144 --variations-seed-version=20251015-090059.375000 --mojo-platform-channel-handle=3300 /prefetch:1
                        7⤵
                          PID:1928
                        • C:\Program Files\Google\Chrome\Application\chrome.exe
                          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --string-annotations --enable-dinosaur-easter-egg-alt-images --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --field-trial-handle=3244,i,5891046167296078590,11560364765520266804,262144 --variations-seed-version=20251015-090059.375000 --mojo-platform-channel-handle=3324 /prefetch:1
                          7⤵
                            PID:2344
                          • C:\Program Files\Google\Chrome\Application\chrome.exe
                            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --string-annotations --extension-process --enable-dinosaur-easter-egg-alt-images --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --field-trial-handle=4184,i,5891046167296078590,11560364765520266804,262144 --variations-seed-version=20251015-090059.375000 --mojo-platform-channel-handle=4216 /prefetch:9
                            7⤵
                              PID:3368
                            • C:\Program Files\Google\Chrome\Application\chrome.exe
                              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --string-annotations --enable-dinosaur-easter-egg-alt-images --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --field-trial-handle=4624,i,5891046167296078590,11560364765520266804,262144 --variations-seed-version=20251015-090059.375000 --mojo-platform-channel-handle=4676 /prefetch:1
                              7⤵
                                PID:1972
                              • C:\Program Files\Google\Chrome\Application\chrome.exe
                                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --message-loop-type-ui --video-capture-use-gpu-memory-buffer --string-annotations --field-trial-handle=212,i,5891046167296078590,11560364765520266804,262144 --variations-seed-version=20251015-090059.375000 --mojo-platform-channel-handle=5444 /prefetch:14
                                7⤵
                                  PID:5692
                                • C:\Program Files\Google\Chrome\Application\chrome.exe
                                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --message-loop-type-ui --video-capture-use-gpu-memory-buffer --string-annotations --field-trial-handle=5436,i,5891046167296078590,11560364765520266804,262144 --variations-seed-version=20251015-090059.375000 --mojo-platform-channel-handle=5492 /prefetch:14
                                  7⤵
                                    PID:4500
                                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --message-loop-type-ui --video-capture-use-gpu-memory-buffer --string-annotations --field-trial-handle=5460,i,5891046167296078590,11560364765520266804,262144 --variations-seed-version=20251015-090059.375000 --mojo-platform-channel-handle=5540 /prefetch:14
                                    7⤵
                                      PID:908
                                • C:\Users\Admin\AppData\Roaming\EBJWriter\XPFix.exe
                                  "C:\Users\Admin\AppData\Roaming\EBJWriter\XPFix.exe" "C:\Users\Admin\AppData\Roaming\EBJWriter\XPFix.exe" /u
                                  5⤵
                                    PID:3564
                          • 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:4980
                            • 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:3592

                              Network

                                    MITRE ATT&CK Enterprise v16

                                    Replay Monitor

                                    Loading Replay Monitor...

                                    Downloads

                                    Network Persistent State

                                    • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\Network Persistent State
                                    • Size 2KB
                                    • SHA256 d777a00c36de0dc7fdc4cf3aaebd540c8269fec8ffb8d9be60dddda73e040283
                                    • MD5 SHA1 SHA512

                                    SCT Auditing Pending Reports

                                    • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\SCT Auditing Pending Reports
                                    • Size 2B
                                    • SHA256 4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945
                                    • MD5 SHA1 SHA512

                                    Preferences

                                    • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences
                                    • Size 10KB
                                    • SHA256 0e979937d69c019ac8831abfce69b6e5ba5b16abf7c4daf168350965809da531
                                    • MD5 SHA1 SHA512 SSDEEP

                                    Secure Preferences

                                    • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Secure Preferences
                                    • Size 15KB
                                    • SHA256 889e6379fcdaf4bad44a036a3f41ab118f63253b8ea5af590e6a584f7f01d371
                                    • MD5 SHA1 SHA512 SSDEEP

                                    the-real-index

                                    • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Service Worker\ScriptCache\index-dir\the-real-index
                                    • Size 72B
                                    • SHA256 93cc5e3b7e9ac53dd261eb4186474c770d56a0cae403b9ef772af609410572d5
                                    • MD5 SHA1 SHA512

                                    the-real-index~RFe61a40f.TMP

                                    • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Service Worker\ScriptCache\index-dir\the-real-index~RFe61a40f.TMP
                                    • Size 48B
                                    • SHA256 bdf2a2d5987fa360378d98d0703e1bfc1bc8528fe63496b59fe391655012abde
                                    • MD5 SHA1 SHA512

                                    Last Version

                                    • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Last Version
                                    • Size 13B
                                    • SHA256 7114eaf0a021d2eb098b1e9f56f3500dc4f74ac68a87f5256922e4a4b9fa66b7
                                    • MD5 SHA1 SHA512

                                    Local State

                                    • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State
                                    • Size 118KB
                                    • SHA256 cc8992978805918405ca5a7f6d0da867c66e3f1f1958c1e73d49c8bfe5e99628
                                    • MD5 SHA1 SHA512 SSDEEP

                                    Local State

                                    • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State
                                    • Size 117KB
                                    • SHA256 1641cb5ece20955f1e6603fec22f99f5d76854602fc82cb4b2a04f14aecbe8e9
                                    • MD5 SHA1 SHA512 SSDEEP

                                    Local State

                                    • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State
                                    • Size 118KB
                                    • SHA256 336ffaa582ec883848c30a4a68ed6e829913fb3872daf0e0d69ba905a6ce301a
                                    • MD5 SHA1 SHA512 SSDEEP

                                    11ED9BA.tmp

                                    • Path C:\Users\Admin\AppData\Local\Temp\11ED9BA.tmp
                                    • Size 3.8MB
                                    • SHA256 6ed7cf2fe2d8ccad4e7a5a62a98935f7373d362fc15c5380eed9f15362dc303d
                                    • MD5 SHA1 SHA512 SSDEEP

                                    55B63B.tmp

                                    • Path C:\Users\Admin\AppData\Local\Temp\55B63B.tmp
                                    • Size 40B
                                    • SHA256 0314559f876514e3c8ab967931267870dd4f79e9b50b88757675db94fc371b34
                                    • MD5 SHA1 SHA512

                                    XenoAnaly.exe

                                    • Path C:\Users\Admin\AppData\Local\Temp\XenoAnaly.exe
                                    • Size 625KB
                                    • SHA256 5c4444234b06090033f2dd507c0b86d59472e7bbccb7675339a10e22fc7a1eff
                                    • MD5 SHA1 SHA512 SSDEEP

                                    Grous.xs

                                    • Path C:\Users\Admin\AppData\Local\Temp\is-LHJBM.tmp\Grous.xs
                                    • Size 3.4MB
                                    • SHA256 fd2dbe411d137505f344a7cd6dbe87c543e13a162a1b352054d727707cff4a0f
                                    • MD5 SHA1 SHA512 SSDEEP

                                    LMIGuardianDll.dll

                                    • Path C:\Users\Admin\AppData\Local\Temp\is-LHJBM.tmp\LMIGuardianDll.dll
                                    • Size 1.8MB
                                    • SHA256 afb7031f3ee67b956dd31e429734f832ee02296950518cf406db6c6c849b878b
                                    • MD5 SHA1 SHA512 SSDEEP

                                    Matri_Debug29.exe

                                    • Path C:\Users\Admin\AppData\Local\Temp\is-LHJBM.tmp\Matri_Debug29.exe
                                    • Size 395KB
                                    • SHA256 26c855264896db95ed46e502f2d318e5f2ad25b59bdc47bd7ffe92646102ae0d
                                    • MD5 SHA1 SHA512 SSDEEP

                                    Studfraer.dqy

                                    • Path C:\Users\Admin\AppData\Local\Temp\is-LHJBM.tmp\Studfraer.dqy
                                    • Size 23KB
                                    • SHA256 3c2e9d57f2483adfe1251b3e4fcc31bbd98e04612fe6e0e47d5480c23ab1e0c3
                                    • MD5 SHA1 SHA512 SSDEEP

                                    payload_2223.tmp

                                    • Path C:\Users\Admin\AppData\Local\Temp\is-QMOL6.tmp\payload_2223.tmp
                                    • Size 3.5MB
                                    • SHA256 34443e18d987170a4d837e5dcc94a28c543d6416e4df93b1431bc069ba546995
                                    • MD5 SHA1 SHA512 SSDEEP

                                    memory/136-0-0x0000000000060000-0x0000000000147000-memory.dmp

                                    memory/136-31-0x0000000000060000-0x0000000000147000-memory.dmp

                                    memory/1568-5-0x00000000029E0000-0x00000000029E1000-memory.dmp

                                    memory/1568-30-0x0000000000390000-0x000000000071F000-memory.dmp

                                    memory/1808-43-0x0000000074320000-0x000000007449D000-memory.dmp

                                    memory/1808-33-0x0000000074320000-0x000000007449D000-memory.dmp

                                    memory/1808-44-0x0000000074320000-0x000000007449D000-memory.dmp

                                    memory/1808-34-0x00007FF99C480000-0x00007FF99C689000-memory.dmp

                                    memory/1808-41-0x0000000074320000-0x000000007449D000-memory.dmp

                                    memory/1808-38-0x0000000074320000-0x000000007449D000-memory.dmp

                                    memory/1808-37-0x0000000074335000-0x0000000074336000-memory.dmp

                                    memory/5536-46-0x00007FF731AE0000-0x00007FF731DF3000-memory.dmp

                                    memory/5536-82-0x00007FF731AE0000-0x00007FF731DF3000-memory.dmp

                                    memory/5536-127-0x00007FF731AE0000-0x00007FF731DF3000-memory.dmp

                                    memory/5536-51-0x00007FF731AE0000-0x00007FF731DF3000-memory.dmp

                                    memory/5536-50-0x00007FF731AE0000-0x00007FF731DF3000-memory.dmp

                                    memory/5640-19-0x00007FF99C480000-0x00007FF99C689000-memory.dmp

                                    memory/5640-18-0x00000000742D0000-0x000000007444D000-memory.dmp