Analysis
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max time kernel
23s -
max time network
23s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
01-12-2024 18:10
Behavioral task
behavioral1
Sample
Quasar.v1.4.1.zip
Resource
win7-20241010-en
General
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Target
Quasar.v1.4.1.zip
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Size
3.3MB
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MD5
13aa4bf4f5ed1ac503c69470b1ede5c1
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SHA1
c0b7dadff8ac37f6d9fd00ae7f375e12812bfc00
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SHA256
4cdeb2eae1cec1ab07077142313c524e9cf360cdec63497538c4405c2d8ded62
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SHA512
767b03e4e0c2a97cb0282b523bcad734f0c6d226cd1e856f6861e6ae83401d0d30946ad219c8c5de3c90028a0141d3dc0111c85e0a0952156cf09e189709fa7d
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SSDEEP
49152:lYLmNgMh/9yUsRFeWMyYISDSwtfxZQNemi57PdHmeFINp/lFnsDbNFNepL6DJo+J:mL9U1yUUQykOQ91XFYBlR8P9d5uNJo9
Malware Config
Signatures
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Quasar family
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Quasar payload 4 IoCs
resource yara_rule behavioral2/files/0x0007000000023cb4-44.dat family_quasar behavioral2/memory/3724-48-0x00000210C6170000-0x00000210C62A8000-memory.dmp family_quasar behavioral2/files/0x0007000000023cb3-49.dat family_quasar behavioral2/memory/3724-50-0x00000210C6680000-0x00000210C6696000-memory.dmp family_quasar -
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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation Quasar.exe -
Executes dropped EXE 1 IoCs
pid Process 3724 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-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\Toolbar explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\Locked = "1" explorer.exe Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser\ITBar7Layout = 13000000000000000000000020000000100000000000000001000000010700005e01000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 explorer.exe -
Modifies registry class 51 IoCs
description ioc Process Set value (data) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 0100000000000000ffffffff explorer.exe Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0\0\0\0 explorer.exe Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0\0\0\0\0 explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 0202 explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\ColInfo = 00000000000000000000000000000000fddfdffd100000000000000000000000040000001800000030f125b7ef471a10a5f102608c9eebac0a0000001001000030f125b7ef471a10a5f102608c9eebac0e0000009000000030f125b7ef471a10a5f102608c9eebac040000007800000030f125b7ef471a10a5f102608c9eebac0c00000050000000 explorer.exe Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff explorer.exe Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2 explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\LogicalViewMode = "1" explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0\0\0\MRUListEx = 00000000ffffffff explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0\0\0\0\0 = 66003100000000008159659110005155415341527e312e3100004c0009000400efbe81595d91815966912e0000009e3c02000000070000000000000000000000000000008ad26a005100750061007300610072002000760031002e0034002e00310000001a000000 explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\Sort = 000000000000000000000000000000000100000030f125b7ef471a10a5f102608c9eebac0a00000001000000 explorer.exe Set value (str) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_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 (data) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0 = 19002f433a5c000000000000000000000000000000000000000000 explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\MRUListEx = 00000000ffffffff explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0\0 = 78003100000000004759d2491100557365727300640009000400efbe874f774881595d912e000000c70500000000010000000000000000003a000000000054d6b60055007300650072007300000040007300680065006c006c00330032002e0064006c006c002c002d0032003100380031003300000014000000 explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0\0\0 = 500031000000000047590054100041646d696e003c0009000400efbe4759d24981595d912e0000005ae10100000001000000000000000000000000000000b65c8200410064006d0069006e00000014000000 explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupByDirection = "1" explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0\0\0\0 = 7e0031000000000081595d9111004465736b746f7000680009000400efbe4759d24981595d912e00000064e101000000010000000000000000003e0000000000835c55004400650073006b0074006f007000000040007300680065006c006c00330032002e0064006c006c002c002d0032003100370036003900000016000000 explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\Shell\WFlags = "0" explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\Shell\ShowCmd = "1" explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\Mode = "4" explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_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-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0\MRUListEx = 00000000ffffffff explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0\0\MRUListEx = 00000000ffffffff explorer.exe Set value (str) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\SniffedFolderType = "Generic" explorer.exe Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7} explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0\0\0\0\0\MRUListEx = ffffffff explorer.exe Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\FFlags = "1092616193" explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupByKey:PID = "0" explorer.exe Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1 = 14001f50e04fd020ea3a6910a2d808002b30309d0000 explorer.exe Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0\0\0 explorer.exe Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\Shell explorer.exe Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\Shell\HotKey = "0" explorer.exe Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings explorer.exe Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0\0 explorer.exe Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_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 Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\Rev = "0" explorer.exe Set value (str) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\Vid = "{137E7700-3573-11CF-AE69-08002B2E1262}" explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\IconSize = "16" explorer.exe Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1 explorer.exe Key created \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0 explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0\0\0\0\MRUListEx = 00000000ffffffff explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0\0\0\0\0\NodeSlot = "2" explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupView = "0" explorer.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1548 explorer.exe -
Suspicious behavior: GetForegroundWindowSpam 2 IoCs
pid Process 2372 7zFM.exe 3724 Quasar.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeRestorePrivilege 2372 7zFM.exe Token: 35 2372 7zFM.exe Token: SeSecurityPrivilege 2372 7zFM.exe Token: SeDebugPrivilege 3724 Quasar.exe -
Suspicious use of FindShellTrayWindow 3 IoCs
pid Process 2372 7zFM.exe 2372 7zFM.exe 3724 Quasar.exe -
Suspicious use of SendNotifyMessage 1 IoCs
pid Process 3724 Quasar.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1548 explorer.exe 1548 explorer.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 3724 wrote to memory of 3428 3724 Quasar.exe 102 PID 3724 wrote to memory of 3428 3724 Quasar.exe 102
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\Quasar.v1.4.1.zip"1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:2372
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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:4952
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C:\Users\Admin\Desktop\Quasar v1.4.1\Quasar.exe"C:\Users\Admin\Desktop\Quasar v1.4.1\Quasar.exe"1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:3724 -
C:\Windows\explorer.exe"C:\Windows\explorer.exe" /select, "C:\Users\Admin\Desktop\Quasar v1.4.1\quasar.p12"2⤵PID:3428
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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:1548
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
68KB
MD5cc6f6503d29a99f37b73bfd881de8ae0
SHA192d3334898dbb718408f1f134fe2914ef666ce46
SHA2560b1e0d8f87f557b52315d98c1f4727e539f5120d20b4ca9edba548983213fbb5
SHA5127f4c0a35b612b864ad9bc6a46370801ed7433424791622bf77bf47d6a776cb6a49e4977b34725ead5d0feaa1c9516db2ca75cb8872c77a8f2fab6c37740b681f
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Filesize
62KB
MD52185564051ea2e046d9f711ed3cd93ff
SHA12f2d7fd470da6d126582ad80df2802aabd6c9cea
SHA256de930a748e4dc08c851ba0a22afce8dcfd0f15f23b291f9306c8ef6ccd7460a2
SHA51200af241c1f89b478e66d758db26ed0a413b690d695abf91211b5cbc3985133632327ea0fc41140bd61d02271b6aa278a8e8f539d8ca6ce94972aef50c1a9c868
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Filesize
1.2MB
MD512ebf922aa80d13f8887e4c8c5e7be83
SHA17f87a80513e13efd45175e8f2511c2cd17ff51e8
SHA25643315abb9c8be9a39782bd8694a7ea9f16a867500dc804454d04b8bf2c15c51e
SHA512fda5071e15cf077d202b08db741bbfb3dbd815acc41deec7b7d44e055cac408e2f2de7233f8f9c5c618afd00ffc2fc4c6e8352cbdf18f9aab55d980dcb58a275
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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
MD5ef1140cb35dc45c9b730fbe808900fd4
SHA121da725d92856b705aa6f7554e893402b21f30a5
SHA256c7044430c3874900c5130adbca6e8ef8dd18f29657397a8e172d0858d0aa279d
SHA512e4c647d430e9b92fda74a95bba24c0d7e5dc4d9debc117499d46d9e3dea0f30001ec942a20e1b9a52f0c3934ed1efaa6e8d431dafa56c13f93584916d5309033