Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-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 4 IoCs
resource yara_rule behavioral1/files/0x00040000000232a3-3.dat family_fesber behavioral1/memory/1284-7-0x0000000000400000-0x000000000041E000-memory.dmp family_fesber behavioral1/files/0x0007000000024507-19.dat family_fesber behavioral1/memory/1284-990-0x0000000000400000-0x000000000041E000-memory.dmp 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" tmp240687140.exe - Executes dropped EXE 2 IoCs
pid Process 1284 tmp240687140.exe 3196 tmp240687156.exe - Drops file in System32 directory 3 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\fsb.tmp tmp240687140.exe File created C:\Windows\SysWOW64\fsb.stb tmp240687140.exe File created C:\Windows\SysWOW64\fsb.tmp tmp240687140.exe -
resource yara_rule behavioral1/memory/2784-0-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral1/files/0x00040000000232a3-3.dat upx behavioral1/memory/1284-7-0x0000000000400000-0x000000000041E000-memory.dmp upx behavioral1/memory/2784-12-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral1/files/0x0007000000024507-19.dat upx behavioral1/memory/1284-990-0x0000000000400000-0x000000000041E000-memory.dmp upx - Drops file in Program Files directory 64 IoCs
description ioc Process File created C:\Program Files\Java\jdk-1.8\bin\javaws.exe- tmp240687140.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\java-rmi.exe tmp240687140.exe File created C:\Program Files\Microsoft Office\root\Office16\MSQRY32.EXE tmp240687140.exe File created C:\Program Files (x86)\Common Files\Microsoft Shared\VSTO\10.0\VSTOInstaller.exe- tmp240687140.exe File created C:\Program Files (x86)\Common Files\Oracle\Java\javapath_target_141359\javaw.exe- tmp240687140.exe File created C:\Program Files (x86)\Microsoft\EdgeCore\139.0.3405.125\pwahelper.exe tmp240687140.exe File created C:\Program Files (x86)\Microsoft\EdgeUpdate_disable\1.3.195.65\MicrosoftEdgeComRegisterShellARM64.exe- tmp240687140.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\appvcleaner.exe- tmp240687140.exe File created C:\Program Files\Java\jdk-1.8\bin\wsgen.exe- tmp240687140.exe File created C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\BHO\ie_to_edge_stub.exe tmp240687140.exe File created C:\Program Files (x86)\Microsoft\EdgeCore\139.0.3405.125\identity_helper.exe- tmp240687140.exe File created C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe tmp240687140.exe File created C:\Program Files\Java\jdk-1.8\bin\jhat.exe tmp240687140.exe File created C:\Program Files\Java\jre-1.8\bin\jabswitch.exe tmp240687140.exe File created C:\Program Files\Microsoft Office\root\Office16\EXCEL.EXE tmp240687140.exe File created C:\Program Files\Microsoft Office\root\Office16\officeappguardwin32.exe- tmp240687140.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroLayoutRecognizer\AcroLayoutRecognizer.exe tmp240687140.exe File created C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe- tmp240687140.exe File created C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\1.3.147.37\MicrosoftEdgeUpdateOnDemand.exe tmp240687140.exe File created C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\Installer\setup.exe- tmp240687140.exe File created C:\Program Files\Java\jre-1.8\bin\javacpl.exe- tmp240687140.exe File created C:\Program Files\Microsoft Office\root\Office16\IEContentService.exe- tmp240687140.exe File created C:\Program Files\Microsoft Office\root\Office16\SDXHelperBgt.exe- tmp240687140.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\FLTLDR.EXE- tmp240687140.exe File created C:\Program Files (x86)\Common Files\Microsoft Shared\MSInfo\msinfo32.exe tmp240687140.exe File created C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\cookie_exporter.exe- tmp240687140.exe File created C:\Program Files\Google\Chrome\Application\140.0.7339.81\os_update_handler.exe tmp240687140.exe File created C:\Program Files\Java\jdk-1.8\bin\jrunscript.exe tmp240687140.exe File created C:\Program Files\Java\jdk-1.8\bin\wsimport.exe- tmp240687140.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\kinit.exe- tmp240687140.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\wow_helper.exe- tmp240687140.exe File created C:\Program Files (x86)\Internet Explorer\ExtExport.exe- tmp240687140.exe File created C:\Program Files\Microsoft Office\Office16\OSPPREARM.EXE tmp240687140.exe File created C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\msedge.exe- tmp240687140.exe File created C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\1.3.147.37\MicrosoftEdgeUpdateSetup.exe tmp240687140.exe File created C:\Program Files\Microsoft Office\root\Integration\Integrator.exe tmp240687140.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\plug_ins\pi_brokers\32BitMAPIBroker.exe- tmp240687140.exe File created C:\Program Files (x86)\Common Files\Java\Java Update\jaureg.exe tmp240687140.exe File created C:\Program Files\Internet Explorer\ExtExport.exe tmp240687140.exe File created C:\Program Files\Java\jdk-1.8\bin\javac.exe- tmp240687140.exe File created C:\Program Files\Java\jdk-1.8\bin\wsimport.exe tmp240687140.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\pack200.exe tmp240687140.exe File created C:\Program Files\Java\jre-1.8\bin\java-rmi.exe- tmp240687140.exe File created C:\Program Files\Java\jre-1.8\bin\klist.exe- tmp240687140.exe File created C:\Program Files\Java\jre-1.8\bin\servertool.exe tmp240687140.exe File created C:\Program Files (x86)\Microsoft\EdgeUpdate_disable\1.3.195.65\MicrosoftEdgeComRegisterShellARM64.exe tmp240687140.exe File created C:\Program Files\Google\Chrome\Application\140.0.7339.81\notification_helper.exe tmp240687140.exe File created C:\Program Files\Microsoft Office\root\Client\AppVLP.exe tmp240687140.exe File created C:\Program Files\Microsoft Office\root\Office16\PDFREFLOW.EXE tmp240687140.exe File created C:\Program Files (x86)\Microsoft\EdgeUpdate_disable\1.3.195.65\MicrosoftEdgeUpdateOnDemand.exe tmp240687140.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\createdump.exe tmp240687140.exe File created C:\Program Files\Java\jdk-1.8\bin\javadoc.exe- tmp240687140.exe File created C:\Program Files (x86)\Common Files\Microsoft Shared\ink\TabTip32.exe tmp240687140.exe File created C:\Program Files (x86)\Microsoft\EdgeCore\139.0.3405.125\BHO\ie_to_edge_stub.exe- tmp240687140.exe File created C:\Program Files (x86)\Microsoft\EdgeCore\139.0.3405.125\Installer\setup.exe tmp240687140.exe File created C:\Program Files\Internet Explorer\ieinstal.exe tmp240687140.exe File created C:\Program Files\Microsoft Office\root\Office16\MSOUC.EXE- tmp240687140.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Eula.exe tmp240687140.exe File created C:\Program Files (x86)\Common Files\Microsoft Shared\VSTO\10.0\VSTOInstaller.exe tmp240687140.exe File created C:\Program Files (x86)\Microsoft\EdgeCore\132.0.2957.140\identity_helper.exe- tmp240687140.exe File created C:\Program Files (x86)\Microsoft\EdgeCore\132.0.2957.140\pwahelper.exe tmp240687140.exe File created C:\Program Files\Google\Chrome\Application\chrome_proxy.exe- tmp240687140.exe File created C:\Program Files\Internet Explorer\ielowutil.exe tmp240687140.exe File created C:\Program Files\Microsoft Office\root\Office16\PerfBoost.exe tmp240687140.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 tmp240687140.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain tmp240687140.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 tmp240687140.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language tmp240687156.exe - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3196 tmp240687156.exe - Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 2784 wrote to memory of 1284 2784 2026-11-07_2dd4a9e0f769ebb0e8420716a829a5ba_amadey_cobalt-strike_elex_vidar_wannacry.exe 85 PID 2784 wrote to memory of 3196 2784 2026-11-07_2dd4a9e0f769ebb0e8420716a829a5ba_amadey_cobalt-strike_elex_vidar_wannacry.exe 86
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:2784 -
C:\Users\Admin\AppData\Local\Temp\tmp240687140.exeC:\Users\Admin\AppData\Local\Temp\tmp240687140.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:1284
-
-
C:\Users\Admin\AppData\Local\Temp\tmp240687156.exeC:\Users\Admin\AppData\Local\Temp\tmp240687156.exe2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
PID:3196
-
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\tmp240687140.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\tmp240687156.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