Resubmissions
18/04/2024, 05:22
240418-f2z8nscc74 1018/04/2024, 05:22
240418-f2njwade8w 1018/04/2024, 05:21
240418-f2gfkade8s 718/04/2024, 05:21
240418-f2csdacc53 1018/04/2024, 05:21
240418-f2b6vade7x 7Analysis
-
max time kernel
591s -
max time network
525s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
18/04/2024, 05:21
Static task
static1
Behavioral task
behavioral1
Sample
d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a.exe
Resource
win10v2004-20240412-en
Behavioral task
behavioral2
Sample
d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a.exe
Resource
win7-20231129-en
Behavioral task
behavioral3
Sample
d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a.exe
Resource
win10-20240404-en
Behavioral task
behavioral4
Sample
d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a.exe
Resource
win10v2004-20240412-en
Behavioral task
behavioral5
Sample
d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a.exe
Resource
win11-20240412-en
General
-
Target
d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a.exe
-
Size
371KB
-
MD5
bb8cd5df2be7e8bcc5be439675b3d0a2
-
SHA1
627ac60f64974d5caaf81c2de8ca0977c91f4219
-
SHA256
d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a
-
SHA512
57031eb7d7b2c27d7ecacdc085d07065ced46a742128f9818f62c9fe6633c31aa8eb20ffc52c8415613787946060f5a6b5adf8b977d5ca4fed9656233ebd9cfa
-
SSDEEP
6144:tnzQnu/cmM1oSigOQT2F8U92Iu7DMVQZhWLvLRXdYX9ji+uhi2PsrhY:hzQnkM1oSiBGI8bxn5m6i+uo20tY
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\ConstraintIndex\Input_{0b7338be-cc28-4c63-8c97-665d0e0866fe}\_DECRYPT_INFO_rscixun.html
http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd'>
http-equiv='Content-Type
Extracted
C:\_DECRYPT_INFO_rscixun.html
http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd'>
http-equiv='Content-Type
Extracted
C:\Users\Public\Libraries\_DECRYPT_INFO_rscixun.html
http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd'>
http-equiv='Content-Type
Signatures
-
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
-
Renames multiple (216) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
-
ACProtect 1.3x - 1.4x DLL software 3 IoCs
Detects file using ACProtect software.
resource yara_rule behavioral1/memory/2432-54-0x0000000003A60000-0x0000000003A68000-memory.dmp acprotect behavioral1/memory/2432-58-0x0000000003A60000-0x0000000003A68000-memory.dmp acprotect behavioral1/memory/2432-57-0x0000000003A60000-0x0000000003A68000-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-1-5-21-1132431369-515282257-1998160155-1000\Control Panel\International\Geo\Nation d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
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 opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU WINWORD.EXE -
Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 2664 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1132431369-515282257-1998160155-1000_Classes\Local Settings d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a.exe -
Suspicious behavior: AddClipboardFormatListener 2 IoCs
pid Process 2248 WINWORD.EXE 2248 WINWORD.EXE -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2432 d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a.exe 2432 d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeBackupPrivilege 4976 vssvc.exe Token: SeRestorePrivilege 4976 vssvc.exe Token: SeAuditPrivilege 4976 vssvc.exe -
Suspicious use of SetWindowsHookEx 7 IoCs
pid Process 2248 WINWORD.EXE 2248 WINWORD.EXE 2248 WINWORD.EXE 2248 WINWORD.EXE 2248 WINWORD.EXE 2248 WINWORD.EXE 2248 WINWORD.EXE -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2432 wrote to memory of 2248 2432 d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a.exe 92 PID 2432 wrote to memory of 2248 2432 d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a.exe 92 PID 2432 wrote to memory of 2664 2432 d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a.exe 103 PID 2432 wrote to memory of 2664 2432 d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a.exe 103 -
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
-
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:2432 -
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:2248
-
-
C:\Windows\SYSTEM32\vssadmin.exevssadmin.exe delete shadows /all /quiet2⤵
- Interacts with shadow copies
PID:2664
-
-
C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4976
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\ConstraintIndex\Apps_{ceafc6dd-efea-4bce-a666-285ae2e5dc7f}\0.1.filtertrie.intermediate.txt.rscixun
Filesize48B
MD5c638de141b7dbd6ae167a0513e112bf1
SHA181acbf5ca21c29a2d2016d03a2b91f7f6d76415d
SHA256daf5c451283e4109b77a207b4850123551e390c5b5ec70e058aebc9f62add2b1
SHA512e0c1d6ffaf35df43235616efb3d115dd3f2c1c12b3cc61d3d4d6f02fbf66d4f0c2dc8ec3cfebc9663d501d12d1fcb0a8130bcd2e6b305b02903f2d9072081d5d
-
C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\ConstraintIndex\Apps_{ceafc6dd-efea-4bce-a666-285ae2e5dc7f}\0.2.filtertrie.intermediate.txt.rscixun
Filesize48B
MD5d1a5f1b88f24a0d640287820e6ab1d3f
SHA1ddb7d29e1c9c6d2eed97391b2cab6f6a11324870
SHA2561b9a7688be9537b75eeb87eb893949f0cf8f86aa778c1b7a3fc9377cdd846e0d
SHA5122785692e8e3fb991e8caf64046471ca9c6c51e50a28708a820f7572433edeb6b7bd962ad29fee0faee3dc3f3d68ee11d5610cfebb4a1c0e2729965a8323db450
-
C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\ConstraintIndex\Input_{0b7338be-cc28-4c63-8c97-665d0e0866fe}\_DECRYPT_INFO_rscixun.html
Filesize12KB
MD554b50774ea0895027b25bd4d39f7e797
SHA12a6160a56c188406ab7de94b4d8027a15767edc8
SHA25641865e1010a656a7310675a8cd9d014bd9925cf34688ed8961c4f3b1898413ea
SHA512a3e3304b7083bcb5437b27f5d31a505f31249bff967747b2bc0a6694ca6bd10396917d05a94e41dc1714733e217328838245b51aeb5ff0659772107aaec79afb
-
Filesize
263KB
MD5ff0e07eff1333cdf9fc2523d323dd654
SHA177a1ae0dd8dbc3fee65dd6266f31e2a564d088a4
SHA2563f925e0cc1542f09de1f99060899eafb0042bb9682507c907173c392115a44b5
SHA512b4615f995fab87661c2dbe46625aa982215d7bde27cafae221dca76087fe76da4b4a381943436fcac1577cb3d260d0050b32b7b93e3eb07912494429f126bb3d
-
C:\Users\Admin\AppData\Local\Temp\d351ac17dc0d9476ef029484a165f99e258f546bba2d619b1c6485cb8875ac7a.rtf
Filesize4KB
MD52d5020c82de674b48cfd17cc20fcbba2
SHA14e317eaeebd839ee5f6eb3925a9fbee819c5349c
SHA256120becd55248f4a2ccbbc99ba9d3c2932223264a95cd72e9ae7568be61277e9a
SHA512ffbbdda009237d6825f6cd6f751a41f4f9d716186901ffdbeed56c2d1410245771decd07f591cf56cafdd4bbebd4e4c74f009ff15736d5321635e34ff17d0d8d
-
Filesize
12KB
MD527bdd3b7715bd169dfe8d5819668ae49
SHA1e1416a0713c33550793394c60224267170a1f637
SHA2561677a2dd017236651a24575724f1353c5c735eeae8d6d5cd69583fbe3fd4d047
SHA5123882c71e87407cc2dd06b4a09f415ff8dd65decfaebc5db128cf54b80ab93f23d10c77a2748995e1be72f12b0d95d67d2484d6a4ee48fae15fa9eb735785d1e0
-
Filesize
12KB
MD53ee4021f8ff761a1c46216c49e708fa8
SHA1b964e3a04e0cea61f889e1bfe048da3ce6352e50
SHA256ecf0e43e625cc8201a7459eb4c430e3d2c24093d43c90cefe5845de184dab664
SHA5126ff9a83403d6087a0ae7cab22595b64a6696bcc809f1fd285a24cbeef7d9cee14741865e23ce2ad762bf002d3e554b343755a01a06c57cb18346b1002cc97690