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240418-f2b6vade7x 7Analysis
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max time kernel
1794s -
max time network
1802s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
14-04-2024 14:20
Static task
static1
Behavioral task
behavioral1
Sample
d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a.exe
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a.exe
Resource
win10-20240404-en
Behavioral task
behavioral3
Sample
d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral4
Sample
d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a.exe
Resource
win11-20240412-en
General
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Target
d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a.exe
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Size
371KB
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MD5
bb8cd5df2be7e8bcc5be439675b3d0a2
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SHA1
627ac60f64974d5caaf81c2de8ca0977c91f4219
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SHA256
d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a
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SHA512
57031eb7d7b2c27d7ecacdc085d07065ced46a742128f9818f62c9fe6633c31aa8eb20ffc52c8415613787946060f5a6b5adf8b977d5ca4fed9656233ebd9cfa
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SSDEEP
6144:tnzQnu/cmM1oSigOQT2F8U92Iu7DMVQZhWLvLRXdYX9ji+uhi2PsrhY:hzQnkM1oSiBGI8bxn5m6i+uo20tY
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\ConstraintIndex\Apps_{7c078609-2ceb-442e-955d-93e13fe50b66}\_DECRYPT_INFO_wortfso.html
http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd'>
http-equiv='Content-Type
Extracted
C:\_DECRYPT_INFO_wortfso.html
http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd'>
http-equiv='Content-Type
Extracted
C:\ProgramData\Package Cache\{33d1fd90-4274-48a1-9bc1-97e33d9c2d6f}\_DECRYPT_INFO_wortfso.html
http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd'>
http-equiv='Content-Type
Extracted
C:\Users\Admin\Desktop\backup_wortfso\_DECRYPT_INFO_wortfso.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 (258) 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/2296-47-0x0000000003A60000-0x0000000003A68000-memory.dmp acprotect behavioral3/memory/2296-50-0x0000000003A60000-0x0000000003A68000-memory.dmp acprotect behavioral3/memory/2296-51-0x0000000003A60000-0x0000000003A68000-memory.dmp acprotect -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a.exe -
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 4816 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\Local Settings d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a.exe -
Suspicious behavior: AddClipboardFormatListener 2 IoCs
pid Process 952 WINWORD.EXE 952 WINWORD.EXE -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2296 d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a.exe 2296 d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeBackupPrivilege 1012 vssvc.exe Token: SeRestorePrivilege 1012 vssvc.exe Token: SeAuditPrivilege 1012 vssvc.exe -
Suspicious use of SetWindowsHookEx 7 IoCs
pid Process 952 WINWORD.EXE 952 WINWORD.EXE 952 WINWORD.EXE 952 WINWORD.EXE 952 WINWORD.EXE 952 WINWORD.EXE 952 WINWORD.EXE -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2296 wrote to memory of 952 2296 d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a.exe 95 PID 2296 wrote to memory of 952 2296 d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a.exe 95 PID 2296 wrote to memory of 4816 2296 d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a.exe 118 PID 2296 wrote to memory of 4816 2296 d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a.exe 118 -
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\d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a.exe"C:\Users\Admin\AppData\Local\Temp\d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a.exe"1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2296 -
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\d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a.rtf" /o ""2⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:952
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C:\Windows\SYSTEM32\vssadmin.exevssadmin.exe delete shadows /all /quiet2⤵
- Interacts with shadow copies
PID:4816
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3856 --field-trial-handle=2244,i,11878111470816612087,2265290141962607370,262144 --variations-seed-version /prefetch:81⤵PID:1548
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4020 --field-trial-handle=2244,i,11878111470816612087,2265290141962607370,262144 --variations-seed-version /prefetch:81⤵PID:2116
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1012
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
12KB
MD577a40d45510b2e5b47e24e6a43ff0b57
SHA1f6306a32b32d2aa847d14469e53fd61f75240906
SHA256cd8ca9c49c7ffa17b79fa9fc1613282989bfbc164864a6ec1daa664a96ae5e3f
SHA51255accf7ca9adec20ed711fe2b85cc97355618add193ddee93fb36c87bc1a50cb8bb1d86af6d8de91ceae9b82fa4e71cd785a6c006eb0f7e3bde06e2d8d1750ba
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C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\ConstraintIndex\Apps_{7c078609-2ceb-442e-955d-93e13fe50b66}\0.1.filtertrie.intermediate.txt.wortfso
Filesize48B
MD5a9b5a305bfddbb68af3ea54931dd643d
SHA14e8492412354ba47588e66e5fdf16d1543c170cc
SHA25604a0278a7eb07195a17fba66ef51778c92493a1f8f547b85120df430d6d7f4d7
SHA51233095e0fa4700837c3e155c1ba3f42ed70eeb49c859d324375ab5b5a5bdff479167210d27b92f13b7b1525eeaef32809225935d5af7f9146571829764c21ab7b
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C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\ConstraintIndex\Apps_{7c078609-2ceb-442e-955d-93e13fe50b66}\0.2.filtertrie.intermediate.txt.wortfso
Filesize48B
MD551168d1dd6f8749a34250f64516a0fb3
SHA1dd8a45d506dbb3d6aea28cdfc7ef4b555df07fff
SHA256d43644bde870907f75c504f464065f00fa3b9271b2768f2fb430560b65239143
SHA51273dd48f08fb181889772e28702db8928cd9d955738ffeaf89172b54ee42d9f862b0aecfc9cdd9e4db92097c7829a8b33654754c10f9890ae5cee8abab1c86795
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C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\ConstraintIndex\Apps_{7c078609-2ceb-442e-955d-93e13fe50b66}\_DECRYPT_INFO_wortfso.html
Filesize12KB
MD5f302a323b8b367957ee4cd3349202271
SHA176ee539460fcb0ceaa09ee024c8b1e9580677dbd
SHA256b91fa7a7bfb182ed9458db325812ffbd2a62c42b310f8529c18d4d7a159dc53a
SHA512b7f0e0323c0143ad8a1616c9ba9cff937d6c0ae368b8e1a3757eabbfc5d050dc66332e2c8dd4f88fb1e79578d33d7fba0f6cd82e557ee58004bedebd5e0f5f21
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C:\Users\Admin\AppData\Local\Temp\d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a.rtf
Filesize4KB
MD52d5020c82de674b48cfd17cc20fcbba2
SHA14e317eaeebd839ee5f6eb3925a9fbee819c5349c
SHA256120becd55248f4a2ccbbc99ba9d3c2932223264a95cd72e9ae7568be61277e9a
SHA512ffbbdda009237d6825f6cd6f751a41f4f9d716186901ffdbeed56c2d1410245771decd07f591cf56cafdd4bbebd4e4c74f009ff15736d5321635e34ff17d0d8d
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Filesize
12KB
MD5ee854c9b5556b77cc7be93b29a075629
SHA18d081f8f09ea81049c07337db55b29a53e390e45
SHA256f22528a1ad0d0681bdf7fff81dd10172083ee729b8a854d1f81db7a720724123
SHA512189fc45e8ae48d60098e253a4cc9aa5cd3e618e1337cb97336560bbca587b3db7713efd27610db3ced42e502a95aebb2b95bb5b957c670c5ad2451bef0a53261
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Filesize
12KB
MD5029ff0389a0e691ef031d16cb4c28b40
SHA1beaef772283a4f3decccb0cc094f6f69cc5b020d
SHA2561e89ac63e335f6b7e60be383eb2ba9cef28bac59543c51a918f075cd62f4e205
SHA512510c48c72c9778237488c4e1ec532f2f02bb10c3b3b8a89ee10fee522bad1386e9bc5c05bd817800c5aec8ade8815ec750a29950ae5d5e55e1afa91fef12c86c