593a3cc35b9d48e4a683b2365ee7991d31df46c414a501076813e108709cc614

Analysis

max time kernel
120s
max time network
33s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
20/03/2023, 07:22

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General

Target

chooser.exe
Size

4KB
MD5

3dc6c43398ace78a0600aee3243ce2bc
SHA1

cfcf3930f0bbee547395decd6476d5c70bac970d
SHA256

593a3cc35b9d48e4a683b2365ee7991d31df46c414a501076813e108709cc614
SHA512

f66af0ae71489d9b4c1c07e5ba140091320344002749904906333a664f016495c5959acb8439cc1ffe042c8376db4b3bd10cc28736fa4f4efa2b755f2de4be59

Score

3^/10

Malware Config

Signatures

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 64 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\7\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\FFlags = "1092616257"	chooser.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\MRUListEx = ffffffff	chooser.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlgLegacy\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\Mode = "4"	chooser.exe
Key created	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\6\ComDlgLegacy	chooser.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\8\Shell\SniffedFolderType = "Generic"	chooser.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\1\0\MRUListEx = ffffffff	chooser.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\9\Shell\KnownFolderDerivedFolderType = "{57807898-8C4F-4462-BB63-71042380B109}"	chooser.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	chooser.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 7e0074001c004346534616003100000000005456b4b6122041707044617461000000741a595e96dfd3488d671733bcee28bac5cdfadf9f6756418947c5c76bc0b67f3c0008000400efbe5456b4b65456b4b62a000000eb0100000000020000000000000000000000000000004100700070004400610074006100000042000000	chooser.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\7\Shell\SniffedFolderType = "Generic"	chooser.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\FFlags = "1"	chooser.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\4\ComDlgLegacy\TV_TopViewID = "{82BA0782-5B7A-4569-B5D7-EC83085F08CC}"	chooser.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\5\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupByKey:FMTID = "{00000000-0000-0000-0000-000000000000}"	chooser.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\6\Shell\KnownFolderDerivedFolderType = "{57807898-8C4F-4462-BB63-71042380B109}"	chooser.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\6\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupByKey:PID = "0"	chooser.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0 = 5a003100000000007456e14210203136323234377e310000420008000400efbe55568c027456e1422a000000744e00000000090000000000000000000000000000003100360032003200340037003600370033003900000018000000	chooser.exe
Key created	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0	chooser.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 0202	chooser.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\8\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\IconSize = "16"	chooser.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\1\MRUListEx = 00000000ffffffff	chooser.exe
Key created	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlgLegacy\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}	chooser.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlgLegacy\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\LogicalViewMode = "1"	chooser.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\5\Shell\SniffedFolderType = "Generic"	chooser.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff	chooser.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\3\ComDlgLegacy\{C4D98F09-6124-4FE0-9942-826416082DA9}\Mode = "6"	chooser.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\4\ComDlgLegacy\TV_TopViewVersion = "0"	chooser.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\MRUListEx = 020000000100000000000000ffffffff	chooser.exe
Key created	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\7\Shell	chooser.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	chooser.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 = 4c00310000000000545623b910204c6f63616c00380008000400efbe5456b4b6545623b92a000000fe0100000000020000000000000000000000000000004c006f00630061006c00000014000000	chooser.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\NodeSlot = "2"	chooser.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupByKey:FMTID = "{00000000-0000-0000-0000-000000000000}"	chooser.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\Shell\KnownFolderDerivedFolderType = "{57807898-8C4F-4462-BB63-71042380B109}"	chooser.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\IconSize = "16"	chooser.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\3\ComDlgLegacy\{C4D98F09-6124-4FE0-9942-826416082DA9}\GroupByDirection = "1"	chooser.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\5\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupByKey:PID = "0"	chooser.exe
Key created	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_Classes\Local Settings	chooser.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = 00000000ffffffff	chooser.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\IconSize = "16"	chooser.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\8\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupByDirection = "1"	chooser.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\6\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\FFlags = "1"	chooser.exe
Key created	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\7\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}	chooser.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\8\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupView = "0"	chooser.exe
Key created	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	chooser.exe
Key created	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell	chooser.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\3\ComDlgLegacy\{C4D98F09-6124-4FE0-9942-826416082DA9}\LogicalViewMode = "2"	chooser.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\5\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\IconSize = "16"	chooser.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\6\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\LogicalViewMode = "1"	chooser.exe
Key created	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\3\ComDlgLegacy	chooser.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\3\ComDlgLegacy\{C4D98F09-6124-4FE0-9942-826416082DA9}\IconSize = "48"	chooser.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\5\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\Mode = "4"	chooser.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\LogicalViewMode = "1"	chooser.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\3\ComDlgLegacy\{C4D98F09-6124-4FE0-9942-826416082DA9}\FFlags = "1"	chooser.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\1\MRUListEx = ffffffff	chooser.exe
Key created	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\1\0	chooser.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\5\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\FFlags = "1092616257"	chooser.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\5\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupView = "0"	chooser.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\6\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupByKey:FMTID = "{00000000-0000-0000-0000-000000000000}"	chooser.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\7\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\Mode = "4"	chooser.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\7\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\LogicalViewMode = "1"	chooser.exe
Key created	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\8	chooser.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\8\ComDlgLegacy\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\Mode = "4"	chooser.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\3\ComDlgLegacy\{C4D98F09-6124-4FE0-9942-826416082DA9}\ColInfo = 00000000000000000000000000000000fddfdffd100000000000000000000000040000001800000030f125b7ef471a10a5f102608c9eebac0a000000a000000030f125b7ef471a10a5f102608c9eebac0e0000007800000030f125b7ef471a10a5f102608c9eebac040000007800000030f125b7ef471a10a5f102608c9eebac0c00000050000000	chooser.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\3\ComDlgLegacy\{C4D98F09-6124-4FE0-9942-826416082DA9}\GroupView = "0"	chooser.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1984	chooser.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1984	chooser.exe

C:\Users\Admin\AppData\Local\Temp\chooser.exe
"C:\Users\Admin\AppData\Local\Temp\chooser.exe"
1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:1984

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1984-54-0x0000000000F20000-0x0000000000F28000-memory.dmp

Filesize
32KB

Download
memory/1984-55-0x000000001AEC0000-0x000000001AF40000-memory.dmp

Filesize
512KB

Download
memory/1984-56-0x000000001AA00000-0x000000001AA10000-memory.dmp

Filesize
64KB

Download
memory/1984-57-0x000000001AEC0000-0x000000001AF40000-memory.dmp

Filesize
512KB

Download