Resubmissions
18/04/2024, 11:18
240418-ned1xsbd66 1018/04/2024, 11:18
240418-nea92abd64 1018/04/2024, 11:18
240418-neay9scf7z 1018/04/2024, 11:18
240418-neacqscf7y 718/04/2024, 11:18
240418-nd92zacf7x 718/04/2024, 09:59
240418-lz5chaba8t 7Analysis
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max time kernel
1192s -
max time network
864s -
platform
windows10-1703_x64 -
resource
win10-20240404-en -
resource tags
arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system -
submitted
18/04/2024, 11:18
Static task
static1
Behavioral task
behavioral1
Sample
0145f04a8356780d52774ce5f7dd0a02f6d5b321694ed805ce3e27bdf04d3c94.exe
Resource
win10-20240404-en
Behavioral task
behavioral2
Sample
0145f04a8356780d52774ce5f7dd0a02f6d5b321694ed805ce3e27bdf04d3c94.exe
Resource
win7-20240221-en
Behavioral task
behavioral3
Sample
0145f04a8356780d52774ce5f7dd0a02f6d5b321694ed805ce3e27bdf04d3c94.exe
Resource
win10-20240404-en
Behavioral task
behavioral4
Sample
0145f04a8356780d52774ce5f7dd0a02f6d5b321694ed805ce3e27bdf04d3c94.exe
Resource
win10v2004-20240412-en
Behavioral task
behavioral5
Sample
0145f04a8356780d52774ce5f7dd0a02f6d5b321694ed805ce3e27bdf04d3c94.exe
Resource
win11-20240412-en
General
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Target
0145f04a8356780d52774ce5f7dd0a02f6d5b321694ed805ce3e27bdf04d3c94.exe
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Size
371KB
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MD5
eafe645b56c3f5cb746fb5f8504f6035
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SHA1
f539987de9fe59bff20483ac7a124afafc27036b
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SHA256
0145f04a8356780d52774ce5f7dd0a02f6d5b321694ed805ce3e27bdf04d3c94
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SHA512
61af2cfa960a72b66d54d0ee121acb5c54d455b05eb85fb2d7df2958d3134d348c87a5aef2aa46319532407f7ebf01eaedfb8dd889bb0f67ce5edc067445e806
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SSDEEP
6144:hnzQnu/cmM1oSigOQT2F8U92Iu7DMVQZhWLv3RXdYX9ji+uhi2PsrhY:dzQnkM1oSiBGI8bxn5W6i+uo20tY
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Packages\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\AC\#!002\MicrosoftEdge\Cache\H15QWMB9\_DECRYPT_INFO_drurvfg.html
http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd'>
http-equiv='Content-Type
Extracted
C:\Users\Admin\AppData\Local\Packages\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\AC\#!001\MicrosoftEdge\Cache\7SR2VNG5\_DECRYPT_INFO_drurvfg.html
http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd'>
http-equiv='Content-Type
Extracted
C:\ProgramData\Package Cache\{57a73df6-4ba9-4c1d-bbbb-517289ff6c13}\_DECRYPT_INFO_drurvfg.html
http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd'>
http-equiv='Content-Type
Signatures
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Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Renames multiple (203) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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ACProtect 1.3x - 1.4x DLL software 3 IoCs
Detects file using ACProtect software.
resource yara_rule behavioral3/memory/4568-226-0x0000000003990000-0x0000000003998000-memory.dmp acprotect behavioral3/memory/4568-230-0x0000000003990000-0x0000000003998000-memory.dmp acprotect behavioral3/memory/4568-229-0x0000000003990000-0x0000000003998000-memory.dmp acprotect -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString WINWORD.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU WINWORD.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS WINWORD.EXE -
Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 4592 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1739856679-3467441365-73334005-1000_Classes\Local Settings 0145f04a8356780d52774ce5f7dd0a02f6d5b321694ed805ce3e27bdf04d3c94.exe -
Suspicious behavior: AddClipboardFormatListener 2 IoCs
pid Process 1548 WINWORD.EXE 1548 WINWORD.EXE -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4568 0145f04a8356780d52774ce5f7dd0a02f6d5b321694ed805ce3e27bdf04d3c94.exe 4568 0145f04a8356780d52774ce5f7dd0a02f6d5b321694ed805ce3e27bdf04d3c94.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeBackupPrivilege 692 vssvc.exe Token: SeRestorePrivilege 692 vssvc.exe Token: SeAuditPrivilege 692 vssvc.exe -
Suspicious use of SetWindowsHookEx 7 IoCs
pid Process 1548 WINWORD.EXE 1548 WINWORD.EXE 1548 WINWORD.EXE 1548 WINWORD.EXE 1548 WINWORD.EXE 1548 WINWORD.EXE 1548 WINWORD.EXE -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 4568 wrote to memory of 1548 4568 0145f04a8356780d52774ce5f7dd0a02f6d5b321694ed805ce3e27bdf04d3c94.exe 72 PID 4568 wrote to memory of 1548 4568 0145f04a8356780d52774ce5f7dd0a02f6d5b321694ed805ce3e27bdf04d3c94.exe 72 PID 4568 wrote to memory of 4592 4568 0145f04a8356780d52774ce5f7dd0a02f6d5b321694ed805ce3e27bdf04d3c94.exe 76 PID 4568 wrote to memory of 4592 4568 0145f04a8356780d52774ce5f7dd0a02f6d5b321694ed805ce3e27bdf04d3c94.exe 76 -
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Users\Admin\AppData\Local\Temp\0145f04a8356780d52774ce5f7dd0a02f6d5b321694ed805ce3e27bdf04d3c94.exe"C:\Users\Admin\AppData\Local\Temp\0145f04a8356780d52774ce5f7dd0a02f6d5b321694ed805ce3e27bdf04d3c94.exe"1⤵
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4568 -
C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\0145f04a8356780d52774ce5f7dd0a02f6d5b321694ed805ce3e27bdf04d3c94.rtf" /o ""2⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1548
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C:\Windows\SYSTEM32\vssadmin.exevssadmin.exe delete shadows /all /quiet2⤵
- Interacts with shadow copies
PID:4592
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:692
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
12KB
MD5e9d889f20a0c04f0f783ea575ab6f6b0
SHA146e41c294c0f34386e3baa99632aa28337944553
SHA256b34e2c14a393c385f1cc3d869a47e918e1eab4ff6a070fa7715cfa2776d14ad4
SHA512426538c45c72c97b7f8bcda8583fc2ff636f2953ea087eeecdcc8076dc1d72196089509ff629172415f78c8f281eba5cbfb5c9b676adaa0c028fabace2519501
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C:\Users\Admin\AppData\Local\Packages\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\AC\#!001\MicrosoftEdge\Cache\7SR2VNG5\_DECRYPT_INFO_drurvfg.html
Filesize12KB
MD5cf83b01212452063939d38860a89b70a
SHA10728f7d9308195b11ebbfbfaaead58836ae8174e
SHA2560962bba79d15d38c357f3940bc2a680d6709d62a79315b0c647f65cce2857461
SHA512fe480455af12861cf488b09d5d84b2e7a1b6fe62f4d0ab50e4790b21eaacf00e78efa378beaf9c41377453416ab536bf0cd3cbae82d8d921333be6e376d20955
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C:\Users\Admin\AppData\Local\Packages\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\AC\#!002\MicrosoftEdge\Cache\H15QWMB9\_DECRYPT_INFO_drurvfg.html
Filesize12KB
MD5787aba1bc86df2bbe34b5e9155dc41a8
SHA15bcaee48b5de6129cb43bff6edd3a8e569f78b5e
SHA25638e141b37145aa2b5a28553b33a87d13ee1230bf63a8857674612856c7de788e
SHA51203d0bc0bf982ca24a341ec8edb8aaffb3f12c216192f318aa5794c0e22e068425b370007cd3a4b6a05444bd8a52c3aab810b69e3978ca5c842a5fdc7539bc7d6
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C:\Users\Admin\AppData\Local\Temp\0145f04a8356780d52774ce5f7dd0a02f6d5b321694ed805ce3e27bdf04d3c94.rtf
Filesize4KB
MD52d5020c82de674b48cfd17cc20fcbba2
SHA14e317eaeebd839ee5f6eb3925a9fbee819c5349c
SHA256120becd55248f4a2ccbbc99ba9d3c2932223264a95cd72e9ae7568be61277e9a
SHA512ffbbdda009237d6825f6cd6f751a41f4f9d716186901ffdbeed56c2d1410245771decd07f591cf56cafdd4bbebd4e4c74f009ff15736d5321635e34ff17d0d8d
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Filesize
263KB
MD5ff0e07eff1333cdf9fc2523d323dd654
SHA177a1ae0dd8dbc3fee65dd6266f31e2a564d088a4
SHA2563f925e0cc1542f09de1f99060899eafb0042bb9682507c907173c392115a44b5
SHA512b4615f995fab87661c2dbe46625aa982215d7bde27cafae221dca76087fe76da4b4a381943436fcac1577cb3d260d0050b32b7b93e3eb07912494429f126bb3d