Analysis
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max time kernel
107s -
max time network
93s -
platform
windows11-21h2_x64 -
resource
win11-20241007-en -
resource tags
arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system -
submitted
08-11-2024 17:52
Static task
static1
General
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Target
QuasarHVNC.7z
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Size
13.5MB
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MD5
54a7c7a1dbdee38f66b9505d7a2f9aa1
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SHA1
ef7103d2b79fea4537f519d476343fd4cefb3161
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SHA256
e4dffd9c261b227bf45245c8198d9cb0f2542fb3ee7a42a6ce649b8929fb184b
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SHA512
f8595b164f34445f8417a7db9bb6e537fcf5107bb82216dce46d80ae5d77087d41eabfa815d3690933a4dd73f60d8322b4ae2f770190f0e71374fc4093c633a1
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SSDEEP
393216:kFaHSX+mAhSFDD34oWhSnWV/LdUp/jawfJ:KaE50oj4z4OLdq/jawfJ
Malware Config
Signatures
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Quasar family
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Quasar payload 4 IoCs
resource yara_rule behavioral1/files/0x001900000002ac4f-138.dat family_quasar behavioral1/memory/460-142-0x0000020112310000-0x000002011242E000-memory.dmp family_quasar behavioral1/files/0x001900000002ac4d-145.dat family_quasar behavioral1/memory/460-146-0x00000201128A0000-0x00000201128B8000-memory.dmp family_quasar -
Executes dropped EXE 1 IoCs
pid Process 460 Quasar.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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description ioc Process Key created \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000\Software\Microsoft\Internet Explorer\Toolbar explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000\Software\Microsoft\Internet Explorer\Toolbar\Locked = "1" explorer.exe Key created \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000\Software\Microsoft\Internet Explorer\Toolbar\ShellBrowser explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000\Software\Microsoft\Internet Explorer\Toolbar\ShellBrowser\ITBar7Layout = 13000000000000000000000020000000100000000000000001000000010700005e01000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 explorer.exe -
Modifies registry class 51 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0\0\0 explorer.exe Key created \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2 explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0 = 19002f433a5c000000000000000000000000000000000000000000 explorer.exe Key created \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0 explorer.exe Key created \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\Shell explorer.exe Set value (str) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupByKey:FMTID = "{00000000-0000-0000-0000-000000000000}" explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupByDirection = "1" explorer.exe Key created \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1 explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0\0\0\0\0\MRUListEx = ffffffff explorer.exe Key created \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ explorer.exe Key created \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\Shell\HotKey = "0" explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\Rev = "0" explorer.exe Key created \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0\0 explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0\0\MRUListEx = 00000000ffffffff explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0\0\0\0 = 7e003100000000006859b38e11004465736b746f7000680009000400efbe47595c5f6859b38e2e0000005f5702000000010000000000000000003e00000000000a288a004400650073006b0074006f007000000040007300680065006c006c00330032002e0064006c006c002c002d0032003100370036003900000016000000 explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 0202 explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0\0\0\0\0\NodeSlot = "2" explorer.exe Key created \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7} explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\LogicalViewMode = "1" explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\FFlags = "1092616209" explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0\0 = 780031000000000047595c5f1100557365727300640009000400efbec5522d606859af8e2e0000006c0500000000010000000000000000003a00000000007bf2870055007300650072007300000040007300680065006c006c00330032002e0064006c006c002c002d0032003100380031003300000014000000 explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupByKey:PID = "0" explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0\0\0\MRUListEx = 00000000ffffffff explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0\0\0\0\0 = 5e003100000000006859bc8e10005155415341527e310000460009000400efbe6859b08e6859bc8e2e000000e5ab020000001b000000000000000000000000000000222c2d00510075006100730061007200480056004e004300000018000000 explorer.exe Key created \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\Shell\ShowCmd = "1" explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\Mode = "4" explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\Sort = 000000000000000000000000000000000100000030f125b7ef471a10a5f102608c9eebac0a00000001000000 explorer.exe Key created \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0\0\0\0\MRUListEx = 00000000ffffffff explorer.exe Set value (str) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\SniffedFolderType = "Generic" explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\MRUListEx = 00000000ffffffff explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1 = 14001f50e04fd020ea3a6910a2d808002b30309d0000 explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 0100000000000000ffffffff explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0\MRUListEx = 00000000ffffffff explorer.exe Key created \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0\0\0\0 explorer.exe Key created \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0\0\0\0\0 explorer.exe Set value (str) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\Vid = "{137E7700-3573-11CF-AE69-08002B2E1262}" explorer.exe Key created \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\IconSize = "16" explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0\0\0 = 50003100000000004759bb64100041646d696e003c0009000400efbe47595c5f6859af8e2e0000005557020000000100000000000000000000000000000066a59600410064006d0069006e00000014000000 explorer.exe Key created \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags explorer.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\Shell\WFlags = "0" explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\FFlags = "1092616193" explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\ColInfo = 00000000000000000000000000000000fddfdffd100000000000000000000000040000001800000030f125b7ef471a10a5f102608c9eebac0a0000001001000030f125b7ef471a10a5f102608c9eebac0e0000009000000030f125b7ef471a10a5f102608c9eebac040000007800000030f125b7ef471a10a5f102608c9eebac0c00000050000000 explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupView = "0" explorer.exe Key created \REGISTRY\USER\S-1-5-21-1537126222-899333903-2037027349-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell explorer.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2036 explorer.exe -
Suspicious behavior: GetForegroundWindowSpam 2 IoCs
pid Process 2736 7zFM.exe 460 Quasar.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeRestorePrivilege 2736 7zFM.exe Token: 35 2736 7zFM.exe Token: SeSecurityPrivilege 2736 7zFM.exe Token: SeDebugPrivilege 460 Quasar.exe -
Suspicious use of FindShellTrayWindow 4 IoCs
pid Process 2736 7zFM.exe 2736 7zFM.exe 460 Quasar.exe 460 Quasar.exe -
Suspicious use of SendNotifyMessage 2 IoCs
pid Process 460 Quasar.exe 460 Quasar.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2036 explorer.exe 2036 explorer.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 460 wrote to memory of 1444 460 Quasar.exe 87 PID 460 wrote to memory of 1444 460 Quasar.exe 87
Processes
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C:\Program Files\7-Zip\7zFM.exe"C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\QuasarHVNC.7z"1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:2736
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:1288
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C:\Users\Admin\Desktop\QuasarHVNC\Quasar.exe"C:\Users\Admin\Desktop\QuasarHVNC\Quasar.exe"1⤵
- Executes dropped EXE
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:460 -
C:\Windows\explorer.exe"C:\Windows\explorer.exe" /select, "C:\Users\Admin\Desktop\QuasarHVNC\quasar.p12"2⤵PID:1444
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C:\Windows\explorer.exeC:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding1⤵
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:2036
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
3.2MB
MD50cf454b6ed4d9e46bc40306421e4b800
SHA19611aa929d35cbd86b87e40b628f60d5177d2411
SHA256e51721dc0647f4838b1abc592bd95fd8cb924716e8a64f83d4b947821fa1fa42
SHA51285262f1bc67a89911640f59a759b476b30ca644bd1a1d9cd3213cc8aae16d7cc6ea689815f19b146db1d26f7a75772ceb48e71e27940e3686a83eb2cf7e46048
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Filesize
6.4MB
MD5022f385e55d9d3d42a33b4ca999bf22a
SHA15d2f22d51d2e87ae8d1f2c1acd3f08f4fdddf107
SHA2563b0e1b3af6d2b8b3d02b6cd52849277c9c8066c2ae565e68253d4551c37492d3
SHA5127fd663b56a2894d1db2ee1032067091f72a4ac301ee8cd392030c6ab186e3bb960d8e35a8591204fc23e9b5a145a2a9ab0092b1c9e6ae5c9c2dc2adf907a891c
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Filesize
68KB
MD5cc6f6503d29a99f37b73bfd881de8ae0
SHA192d3334898dbb718408f1f134fe2914ef666ce46
SHA2560b1e0d8f87f557b52315d98c1f4727e539f5120d20b4ca9edba548983213fbb5
SHA5127f4c0a35b612b864ad9bc6a46370801ed7433424791622bf77bf47d6a776cb6a49e4977b34725ead5d0feaa1c9516db2ca75cb8872c77a8f2fab6c37740b681f
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Filesize
69KB
MD54b39632f200f7cc1117b10889892ed81
SHA106a82e9b3c209b7f7f10184ac3021fa173b2a4cc
SHA2560a352f27584366da35664b01c603401365f0ddad75b9dd7b783eeb34727fe14e
SHA5125b47fb210bf4d22eecf92a7ef5266471c1a676e47b6a4a994fd9ac930060e9ff4a42d2f2bb4abc398d3d9800bc6d819619459915d48f8181e6c2f106ae714f04
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Filesize
1.1MB
MD5dd8295429fd3c14933eed76bae6f2aee
SHA109f284e0745ed71956463656ea8cf538823f954e
SHA256dafaeb6423c18fe38a3af1fbaf45c5bfad83713e226856f89572561e8425328e
SHA5121abe16b14bd733103878c69bd975fc44bb9d0f95f4b0b24329c74a4c7054c2ddd543698fa93a9e36362697830a5178e1484a3bfca2bc2d06ad7d6ea655877e50
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Filesize
176B
MD5c8cd50e8472b71736e6543f5176a0c12
SHA10bd6549820de5a07ac034777b3de60021121405e
SHA256b44739eeff82db2b575a45b668893e2fe8fdd24a709cbf0554732fd3520b2190
SHA5126e8f77fcca5968788cc9f73c9543ce9ab7b416372bc681093aa8a3aad43af1f06c56fcbc296c7897a3654b86a6f9d0e8b0fe036677cf290957924377bc177d9f
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Filesize
282KB
MD5abc82ae4f579a0bbfa2a93db1486eb38
SHA1faa645b92e3de7037c23e99dd2101ef3da5756e5
SHA256ca6608346291ec82ee4acf8017c90e72db2ee7598015f695120c328d25319ec6
SHA512e06ee564fdd3fe2e26b0dec744a969a94e4b63a2e37692a7dcc244cb7949b584d895e9d3766ea52c9fe72b7a31dacf4551f86ea0d7c987b80903ff43be9faed3
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Filesize
4KB
MD58025d0822108ebba866c4408d72569f3
SHA1f68a99cd8a803fc025098c3d557518f083e9d4a6
SHA2561848482176330aacce4e6ca8c826a1769851c279349d59eef57aca0e1870b32f
SHA512582b30d1d8fd104c34c3db750638454db47a6bc9343922e11dacad243c9e0f17e65ceb38bb1599deb47bb44ad24e114d1a945b44938b70ce28b2df5a79bedf58