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
599s -
max time network
605s -
platform
windows10-1703_x64 -
resource
win10-20240319-en -
resource tags
arch:x64arch:x86image:win10-20240319-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
win7-20240220-en
Behavioral task
behavioral3
Sample
0145f04a8356780d52774ce5f7dd0a02f6d5b321694ed805ce3e27bdf04d3c94.exe
Resource
win10-20240319-en
Behavioral task
behavioral4
Sample
0145f04a8356780d52774ce5f7dd0a02f6d5b321694ed805ce3e27bdf04d3c94.exe
Resource
win10v2004-20240226-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.Windows.Cortana_cw5n1h2txyewy\LocalState\ConstraintIndex\Apps_{ba181f51-8338-4f76-92b7-6f1f5d4490af}\_DECRYPT_INFO_vxlyt.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_vxlyt.html
http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd'>
http-equiv='Content-Type
Signatures
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Maktub Locker
Advanced ransomware family capable of offline decryption, generally distributed via .scr email attachments.
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Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Renames multiple (178) 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/3272-226-0x0000000003990000-0x0000000003998000-memory.dmp acprotect behavioral3/memory/3272-230-0x0000000003990000-0x0000000003998000-memory.dmp acprotect behavioral3/memory/3272-229-0x0000000003990000-0x0000000003998000-memory.dmp acprotect -
Uses Tor communications 1 TTPs
Malware can proxy its traffic through Tor for more anonymity.
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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 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 692 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3971934951-2222591486-1444465656-1000_Classes\Local Settings 0145f04a8356780d52774ce5f7dd0a02f6d5b321694ed805ce3e27bdf04d3c94.exe -
Suspicious behavior: AddClipboardFormatListener 2 IoCs
pid Process 3724 WINWORD.EXE 3724 WINWORD.EXE -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 3272 0145f04a8356780d52774ce5f7dd0a02f6d5b321694ed805ce3e27bdf04d3c94.exe 3272 0145f04a8356780d52774ce5f7dd0a02f6d5b321694ed805ce3e27bdf04d3c94.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeBackupPrivilege 1484 vssvc.exe Token: SeRestorePrivilege 1484 vssvc.exe Token: SeAuditPrivilege 1484 vssvc.exe -
Suspicious use of SetWindowsHookEx 7 IoCs
pid Process 3724 WINWORD.EXE 3724 WINWORD.EXE 3724 WINWORD.EXE 3724 WINWORD.EXE 3724 WINWORD.EXE 3724 WINWORD.EXE 3724 WINWORD.EXE -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 3272 wrote to memory of 3724 3272 0145f04a8356780d52774ce5f7dd0a02f6d5b321694ed805ce3e27bdf04d3c94.exe 73 PID 3272 wrote to memory of 3724 3272 0145f04a8356780d52774ce5f7dd0a02f6d5b321694ed805ce3e27bdf04d3c94.exe 73 PID 3272 wrote to memory of 692 3272 0145f04a8356780d52774ce5f7dd0a02f6d5b321694ed805ce3e27bdf04d3c94.exe 76 PID 3272 wrote to memory of 692 3272 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:3272 -
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:3724
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C:\Windows\SYSTEM32\vssadmin.exevssadmin.exe delete shadows /all /quiet2⤵
- Interacts with shadow copies
PID:692
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1484
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
12KB
MD5074eb99ce10941cc3da5958dd5fa7043
SHA1c1f82e5242e8397a018ca248ed974d3f2fbd8953
SHA25689b7fa3ff82900864830e7d7eaba4204bd169264602656d0fbdb85bc8939e98e
SHA512befe259aa1dcd1dc98c16d128390f23843783b97ef515081884f2240b6365fe8983368d1132e85b8cdefc07ea4a21465a0292d74b60866497a7f1886badefee4
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C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Cortana_cw5n1h2txyewy\LocalState\ConstraintIndex\Apps_{4d44648a-0e2c-43ef-bdbe-958be32da67b}\0.1.filtertrie.intermediate.txt.vxlyt
Filesize48B
MD5e29e55986567b03b8ac9d58c0edb99d0
SHA19f49f8e68e4901c286f2ace03b37da3b1e602047
SHA256e06a029120467240bce692b2d98d68c1dab7ff5fc46dbbfda06ef7847d4e02d5
SHA5122c8372e0ef674545da81c1b90d46863657b6b367e8cad7b57134e2047f2d889d5d96430760b749abd079961437644e1a22aa3b07ea6071807d69ef0cd7ba976f
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C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Cortana_cw5n1h2txyewy\LocalState\ConstraintIndex\Apps_{ba181f51-8338-4f76-92b7-6f1f5d4490af}\0.2.filtertrie.intermediate.txt.vxlyt
Filesize48B
MD5c2816aae86886e490f4b5253d38fb9f0
SHA136b1ba0220296fb925128615d35bc257609bd975
SHA256cc7252c07d5208476dd61e8d01f71fa7a5ddfbd9fc0caa309436d6ca063e0560
SHA5122e828c42d9c7b51cd854694dd359a2120eff3a28fed9cd4d0e65d21ac9c1e293c9df2b8c88cbf9d61446bacb6418e0ab7a22dc17ad051414a93456189f9542a6
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C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Cortana_cw5n1h2txyewy\LocalState\ConstraintIndex\Apps_{ba181f51-8338-4f76-92b7-6f1f5d4490af}\_DECRYPT_INFO_vxlyt.html
Filesize12KB
MD5d56cc9ec8b2065f7ddafa645f83e52d5
SHA10dcbd2472298aca2e2c61517affcb6edcb59a0c6
SHA256220523c67a435be0f6eb4f27b887bcbaa45446b44cf4d497502d3b9db213d137
SHA5128c9bbeb9b29ca5a2262af1fdce462c737ce37f6c36faa9747b1e36c8231dbcd8335a3867b5f5d90c5aa9fecc5bc79976fc37ff4cbd8668126e48414d7c8969c6
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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