Analysis
- max time kernel
150s - max time network
149s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
07/11/2026, 15:47
Behavioral task
behavioral1
Sample
2026-11-07_2dd4a9e0f769ebb0e8420716a829a5ba_amadey_cobalt-strike_elex_vidar_wannacry.exe
Resource
win10v2004-20260911-en
windows10-2004-x64
12 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-11-07_2dd4a9e0f769ebb0e8420716a829a5ba_amadey_cobalt-strike_elex_vidar_wannacry.exe
Resource
win11ltsc2024-20260911-en
windows11-ltsc_2024-x64
14 signatures
150 seconds
General
- Target 2026-11-07_2dd4a9e0f769ebb0e8420716a829a5ba_amadey_cobalt-strike_elex_vidar_wannacry.exe
- Size 4.1MB
- Sample261107-s8dpgazsgw
- SHA256 36fa45af8e28c97fd870d78c256960f9861ddf88aad2f0d355e703dc2813545c
- MD5 2dd4a9e0f769ebb0e8420716a829a5ba
- SHA1 61a8dd02069a8e04550a69e725be90558a877bd7
- SHA512 84eef4fda53c3b6ffd305f5a062fbba15d9a88f78aee7e824776c11815a2ae5c333deef860fcb2dca3eb997673d4dff82fc327cde10ab728c22457ce525d52e6
- SSDEEP 98304:BDIkC69LapIBsTpLFH26Z5xF7x5Q+joDYZbDUH:g69cIBsTpr53ocbDUH
- TLSH T18A165C16F6B88377D073C079C6D6A6AAF97234454B3089CB0385C76C2E37AE5863A735
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
Malware Config
Signatures
- Detects Fesber payload 5 IoCs
resource yara_rule behavioral2/files/0x000b00000001b2fd-4.dat family_fesber behavioral2/memory/4816-6-0x0000000000400000-0x000000000041E000-memory.dmp family_fesber behavioral2/files/0x000d00000001c46d-18.dat family_fesber behavioral2/memory/4816-569-0x0000000000400000-0x000000000041E000-memory.dmp family_fesber behavioral2/files/0x012b0000000170ef-1279.dat family_fesber - Modifies WinLogon for persistence 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "Explorer.exe fsb.exe" tmp240733937.exe - Executes dropped EXE 2 IoCs
pid Process 4816 tmp240733937.exe 2864 tmp240733984.exe - Drops file in System32 directory 3 IoCs
description ioc Process File created C:\Windows\SysWOW64\fsb.stb tmp240733937.exe File created C:\Windows\SysWOW64\fsb.tmp tmp240733937.exe File opened for modification C:\Windows\SysWOW64\fsb.tmp tmp240733937.exe -
resource yara_rule behavioral2/memory/2368-0-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral2/files/0x000b00000001b2fd-4.dat upx behavioral2/memory/4816-6-0x0000000000400000-0x000000000041E000-memory.dmp upx behavioral2/memory/2368-15-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral2/files/0x000d00000001c46d-18.dat upx behavioral2/memory/4816-569-0x0000000000400000-0x000000000041E000-memory.dmp upx behavioral2/files/0x012b0000000170ef-1279.dat upx - Drops file in Program Files directory 64 IoCs
description ioc Process File created C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedge_proxy.exe tmp240733937.exe File created C:\Program Files\Java\jdk-1.8\bin\serialver.exe- tmp240733937.exe File created C:\Program Files\Microsoft Office\root\Office16\Wordconv.exe tmp240733937.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\Smart Tag\SmartTagInstall.exe tmp240733937.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\reader_sl.exe- tmp240733937.exe File created C:\Program Files (x86)\Common Files\Java\Java Update\jaureg.exe- tmp240733937.exe File created C:\Program Files (x86)\Microsoft\EdgeCore\139.0.3405.125\pwahelper.exe- tmp240733937.exe File created C:\Program Files\Google\Chrome\Application\140.0.7339.81\os_update_handler.exe tmp240733937.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\orbd.exe tmp240733937.exe File created C:\Program Files\Java\jre-1.8\bin\rmiregistry.exe tmp240733937.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroTextExtractor.exe tmp240733937.exe File created C:\Program Files (x86)\Microsoft\EdgeUpdate_disable\1.3.195.65\MicrosoftEdgeUpdateComRegisterShell64.exe tmp240733937.exe File created C:\Program Files\Java\jre-1.8\bin\java.exe tmp240733937.exe File created C:\Program Files\Java\jre-1.8\bin\ktab.exe- tmp240733937.exe File created C:\Program Files (x86)\Microsoft\EdgeCore\139.0.3405.125\msedge.exe- tmp240733937.exe File created C:\Program Files (x86)\Microsoft\EdgeUpdate_disable\Download\{56EB18F8-B008-4CBD-B6D2-8C97FE7E9062}\139.0.3405.125\MicrosoftEdge_X64_139.0.3405.125.exe tmp240733937.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\java-rmi.exe- tmp240733937.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\jjs.exe tmp240733937.exe File created C:\Program Files\Microsoft Office\root\Office16\excelcnv.exe tmp240733937.exe File created C:\Program Files\Microsoft Office\root\Office16\PDFREFLOW.EXE- tmp240733937.exe File created C:\Program Files\Microsoft Office\root\Office16\SETLANG.EXE tmp240733937.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\MSOXMLED.EXE tmp240733937.exe File created C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\msedge_proxy.exe- tmp240733937.exe File created C:\Program Files (x86)\Microsoft\Edge\Application\msedge_proxy.exe tmp240733937.exe File created C:\Program Files\Internet Explorer\ieinstal.exe- tmp240733937.exe File created C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE- tmp240733937.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DWTRIG20.EXE- tmp240733937.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AdobeCollabSync.exe- tmp240733937.exe File created C:\Program Files (x86)\Microsoft\EdgeCore\122.0.2365.106\msedgewebview2.exe- tmp240733937.exe File created C:\Program Files (x86)\Microsoft\EdgeCore\139.0.3405.125\identity_helper.exe- tmp240733937.exe File created C:\Program Files (x86)\Microsoft\EdgeUpdate_disable\Download\{56EB18F8-B008-4CBD-B6D2-8C97FE7E9062}\139.0.3405.125\MicrosoftEdge_X64_139.0.3405.125.exe- tmp240733937.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\createdump.exe- tmp240733937.exe File created C:\Program Files\Microsoft Office\root\Office16\misc.exe tmp240733937.exe File created C:\Program Files\Microsoft Office\root\Office16\OLCFG.EXE- tmp240733937.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\plug_ins\pi_brokers\32BitMAPIBroker.exe tmp240733937.exe File created C:\Program Files (x86)\Microsoft\EdgeUpdate_disable\1.3.195.65\MicrosoftEdgeUpdate.exe tmp240733937.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\appvcleaner.exe- tmp240733937.exe File created C:\Program Files\Java\jdk-1.8\bin\jsadebugd.exe tmp240733937.exe File created C:\Program Files\Java\jre-1.8\bin\policytool.exe- tmp240733937.exe File created C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\msedge_pwa_launcher.exe- tmp240733937.exe File created C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\pwahelper.exe tmp240733937.exe File created C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe tmp240733937.exe File created C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\BHO\ie_to_edge_stub.exe tmp240733937.exe File created C:\Program Files\Java\jdk-1.8\bin\jstat.exe tmp240733937.exe File created C:\Program Files\Microsoft Office\root\Office16\PPTICO.EXE tmp240733937.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\MSOICONS.EXE tmp240733937.exe File created C:\Program Files\Java\jre-1.8\bin\jjs.exe- tmp240733937.exe File created C:\Program Files\Java\jre-1.8\bin\rmiregistry.exe- tmp240733937.exe File created C:\Program Files\Microsoft Office\root\Office16\POWERPNT.EXE tmp240733937.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\ADelRCP.exe tmp240733937.exe File created C:\Program Files\Java\jdk-1.8\bin\jdb.exe tmp240733937.exe File created C:\Program Files\Microsoft Office\root\Office16\IEContentService.exe- tmp240733937.exe File created C:\Program Files\Microsoft Office\root\Office16\WORDICON.EXE tmp240733937.exe File created C:\Program Files\Microsoft Office 15\ClientX64\IntegratedOffice.exe- tmp240733937.exe File created C:\Program Files\Mozilla Firefox\uninstall\helper.exe- tmp240733937.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrServicesUpdater.exe- tmp240733937.exe File created C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\pwahelper.exe- tmp240733937.exe File created C:\Program Files (x86)\Microsoft\EdgeCore\122.0.2365.106\msedge_proxy.exe tmp240733937.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\OfficeClickToRun.exe tmp240733937.exe File created C:\Program Files\Microsoft Office\root\Office16\ORGCHART.EXE- tmp240733937.exe File created C:\Program Files\Java\jdk-1.8\bin\javafxpackager.exe tmp240733937.exe File created C:\Program Files\Microsoft Office\root\Office16\msoev.exe tmp240733937.exe File created C:\Program Files\Microsoft Office\root\Office16\OLCFG.EXE tmp240733937.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX64\Microsoft Analysis Services\AS OLEDB\140\SQLDumper.exe- tmp240733937.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
description ioc Process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname tmp240733937.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain tmp240733937.exe - System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2026-11-07_2dd4a9e0f769ebb0e8420716a829a5ba_amadey_cobalt-strike_elex_vidar_wannacry.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language tmp240733937.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language tmp240733984.exe - Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A8CDFF1C-4878-43be-B5FD-F8091C1C60D0}\Instance\ tmp240733984.exe - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2864 tmp240733984.exe - Suspicious behavior: LoadsDriver 1 IoCs
pid 4 - Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 2368 wrote to memory of 4816 2368 2026-11-07_2dd4a9e0f769ebb0e8420716a829a5ba_amadey_cobalt-strike_elex_vidar_wannacry.exe 89 PID 2368 wrote to memory of 2864 2368 2026-11-07_2dd4a9e0f769ebb0e8420716a829a5ba_amadey_cobalt-strike_elex_vidar_wannacry.exe 90
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-11-07_2dd4a9e0f769ebb0e8420716a829a5ba_amadey_cobalt-strike_elex_vidar_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2026-11-07_2dd4a9e0f769ebb0e8420716a829a5ba_amadey_cobalt-strike_elex_vidar_wannacry.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2368 -
C:\Users\Admin\AppData\Local\Temp\tmp240733937.exeC:\Users\Admin\AppData\Local\Temp\tmp240733937.exe2⤵
- Modifies WinLogon for persistence
- Executes dropped EXE
- Drops file in System32 directory
- Drops file in Program Files directory
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
PID:4816
-
-
C:\Users\Admin\AppData\Local\Temp\tmp240733984.exeC:\Users\Admin\AppData\Local\Temp\tmp240733984.exe2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
PID:2864
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Program Files\7-Zip\7z.exe-
- Size 4.2MB
- SHA256 914437fe09a5af1c3782ef52f023b26b75a4f7bf2c094d1718781f66902ad92a
- MD5 d8f123eda7703982d6b78825785624fc
- SHA1 00a13aee67a569bdb2a2011211286c2b33d4c93d
- SHA512 3d64e6b0e3c9acaeccea5d18e594b36ec35b7dc04634fbfe9ecf1a313763d48f3d8bee9f52d56f2af282b6d6ab2d8aaf85262e421c3ddfc672e89d96886c8f33
- SSDEEP 98304:BDIkC69LapIBsTpLFH26Z5xF7x5Q+joHjo:g69cIBsTpr53oDo
- TLSH T161164B16F6B88376D073D0B9C5D6A69AFD7234461B3089CB0285C77C2E27BE5863A731
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Temp\tmp240733937.exe
- Size 3.6MB
- SHA256 25b4c874325c5e01d5c5b43d1a4fc15627996a49b5895926fc743620d29d3232
- MD5 051d42e33b188dd2108cb6488e665c55
- SHA1 69af154bbd41dfc63979a6c194eff8c91c1372e3
- SHA512 0f523d15a1e78a084109da20102ac6baef90eb0ac3308c881d34afd38ac8e73068ea7c22bc4552b13b46db00328c84ef557e90c33ca7a928046662283edd2ed4
- SSDEEP 49152:jPd9ob7ko+4KuUOROgppYqcgjI45TMwwapIgTShsTbtLai7H26Z5x31f9ZLx5SnT:zDIkC69LapIBsTpLFH26Z5xF7x5Q+jo
- TLSH T13E065C16F6B88376D073D0B9C5D6A66AFD7234460B3089CB0385C76C2E27BE5863A735
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Temp\tmp240733984.exe
- Size 412KB
- SHA256 581404635ecc46e2639144b248d85bed113dc4b1c9844f3a2a36df418cb74b32
- MD5 1bce2c02487972ff0d5e6702d79e7a75
- SHA1 f8d409e7ad8c39b344444c95104b69f53f1b8d8c
- SHA512 297e5a3a4131a411a1a10415cb6e3fe456f9ce46228b0fe9a8d08907de8d9d0715a0b43e90bef0ab0a1585942353397e1e7f04f85aa4e970da9cdc15f098637d
- SSDEEP 6144:RI/c0wufbnEtB27BLm9LbR24pDshgVM1qskdwxlZ///Hwz:G/nNbnEtB2xMbDshgVqd9lK
- TLSH T16E9419113ABCE737D3E50530CF6DBBA1B8F5B9688E21081727D41A2C1A75D85D22AF2D
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\Downloads\LimitConvertFrom.exe-
- Size 4.2MB
- SHA256 50817fcff86fbb59333f5c1ee192cf824b2360120ffc984dc5d1f075649c75d5
- MD5 6d82a68f1a5471ad4f3281627928dc6f
- SHA1 f2d77a5f3be14da414016b3bffc17fdad7577202
- SHA512 9c6c516c7c10841682a23efb41a02b8bdaea284a2fe99da17786dee8f04f262a93474f2d960153cf8515e848760b0bb147c36d277a29a9bd57a2352214ded708
- SSDEEP 98304:BDIkC69LapIBsTpLFH26Z5xF7x5Q+jozK/7CJ1k:g69cIBsTpr53osCQ
- TLSH T14E167D16F6B88376D073D0B9C5D6A66AFD7234460B3089CB0385C76C2E27BE5863A735
- MD5 SHA1 SHA512 SSDEEP TLSH