Analysis
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max time kernel
118s -
max time network
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platform
windows7_x64 -
resource
win7-20241010-en -
resource tags
arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system -
submitted
23/03/2025, 21:34
Behavioral task
behavioral1
Sample
QON0P_FreeVbucks.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
QON0P_FreeVbucks.exe
Resource
win10v2004-20250314-en
General
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Target
QON0P_FreeVbucks.exe
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Size
2.7MB
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MD5
a988089a040efd226b8c801f1d527d17
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SHA1
2cf4a52f0d2313dd7a7619bbc61681aecdcb2610
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SHA256
40a4b00e9904e973795b36d57e35da10f2543dfc55a54ac25a88da5c53e55a84
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SHA512
e591aafc86c3c370be73347441bd576c995538f8d19fcadc3e25f9c36193d3be08fbb5a65134d84168b203c87f5d533a96442f481f8c14741f36d4ed9a8277e4
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SSDEEP
24576:ivC7suY2Mlva2bpmGB3rgkTsZGvSKgkatV9hLG37WDd/OKAVlAL4lGhty:iibM0NkA8leL
Malware Config
Extracted
C:\Users\Admin\Documents\read_it.txt
chaos
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 3 IoCs
resource yara_rule behavioral1/memory/2772-1-0x0000000001370000-0x0000000001636000-memory.dmp family_chaos behavioral1/files/0x000c000000012262-6.dat family_chaos behavioral1/memory/2216-8-0x0000000001190000-0x0000000001456000-memory.dmp family_chaos -
Chaos family
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Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 1852 bcdedit.exe 640 bcdedit.exe -
pid Process 928 wbadmin.exe -
Drops startup file 3 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini svchost.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\read_it.txt svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 2216 svchost.exe -
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Drops desktop.ini file(s) 34 IoCs
description ioc Process File opened for modification C:\Users\Admin\Favorites\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-3692679935-4019334568-335155002-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\Sample Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\Sample Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\Sample Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links for United States\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\8sfx7hvb2.jpg" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Pictures\\My Wallpaper.jpg" svchost.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Interacts with shadow copies 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 2084 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 2480 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2216 svchost.exe -
Suspicious behavior: EnumeratesProcesses 9 IoCs
pid Process 2772 QON0P_FreeVbucks.exe 2772 QON0P_FreeVbucks.exe 2772 QON0P_FreeVbucks.exe 2216 svchost.exe 2216 svchost.exe 2216 svchost.exe 2216 svchost.exe 2216 svchost.exe 2216 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2772 QON0P_FreeVbucks.exe Token: SeDebugPrivilege 2216 svchost.exe Token: SeBackupPrivilege 1692 vssvc.exe Token: SeRestorePrivilege 1692 vssvc.exe Token: SeAuditPrivilege 1692 vssvc.exe Token: SeIncreaseQuotaPrivilege 2460 WMIC.exe Token: SeSecurityPrivilege 2460 WMIC.exe Token: SeTakeOwnershipPrivilege 2460 WMIC.exe Token: SeLoadDriverPrivilege 2460 WMIC.exe Token: SeSystemProfilePrivilege 2460 WMIC.exe Token: SeSystemtimePrivilege 2460 WMIC.exe Token: SeProfSingleProcessPrivilege 2460 WMIC.exe Token: SeIncBasePriorityPrivilege 2460 WMIC.exe Token: SeCreatePagefilePrivilege 2460 WMIC.exe Token: SeBackupPrivilege 2460 WMIC.exe Token: SeRestorePrivilege 2460 WMIC.exe Token: SeShutdownPrivilege 2460 WMIC.exe Token: SeDebugPrivilege 2460 WMIC.exe Token: SeSystemEnvironmentPrivilege 2460 WMIC.exe Token: SeRemoteShutdownPrivilege 2460 WMIC.exe Token: SeUndockPrivilege 2460 WMIC.exe Token: SeManageVolumePrivilege 2460 WMIC.exe Token: 33 2460 WMIC.exe Token: 34 2460 WMIC.exe Token: 35 2460 WMIC.exe Token: SeIncreaseQuotaPrivilege 2460 WMIC.exe Token: SeSecurityPrivilege 2460 WMIC.exe Token: SeTakeOwnershipPrivilege 2460 WMIC.exe Token: SeLoadDriverPrivilege 2460 WMIC.exe Token: SeSystemProfilePrivilege 2460 WMIC.exe Token: SeSystemtimePrivilege 2460 WMIC.exe Token: SeProfSingleProcessPrivilege 2460 WMIC.exe Token: SeIncBasePriorityPrivilege 2460 WMIC.exe Token: SeCreatePagefilePrivilege 2460 WMIC.exe Token: SeBackupPrivilege 2460 WMIC.exe Token: SeRestorePrivilege 2460 WMIC.exe Token: SeShutdownPrivilege 2460 WMIC.exe Token: SeDebugPrivilege 2460 WMIC.exe Token: SeSystemEnvironmentPrivilege 2460 WMIC.exe Token: SeRemoteShutdownPrivilege 2460 WMIC.exe Token: SeUndockPrivilege 2460 WMIC.exe Token: SeManageVolumePrivilege 2460 WMIC.exe Token: 33 2460 WMIC.exe Token: 34 2460 WMIC.exe Token: 35 2460 WMIC.exe Token: SeBackupPrivilege 1784 wbengine.exe Token: SeRestorePrivilege 1784 wbengine.exe Token: SeSecurityPrivilege 1784 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2772 wrote to memory of 2216 2772 QON0P_FreeVbucks.exe 30 PID 2772 wrote to memory of 2216 2772 QON0P_FreeVbucks.exe 30 PID 2772 wrote to memory of 2216 2772 QON0P_FreeVbucks.exe 30 PID 2216 wrote to memory of 520 2216 svchost.exe 32 PID 2216 wrote to memory of 520 2216 svchost.exe 32 PID 2216 wrote to memory of 520 2216 svchost.exe 32 PID 520 wrote to memory of 2084 520 cmd.exe 34 PID 520 wrote to memory of 2084 520 cmd.exe 34 PID 520 wrote to memory of 2084 520 cmd.exe 34 PID 520 wrote to memory of 2460 520 cmd.exe 38 PID 520 wrote to memory of 2460 520 cmd.exe 38 PID 520 wrote to memory of 2460 520 cmd.exe 38 PID 2216 wrote to memory of 1764 2216 svchost.exe 40 PID 2216 wrote to memory of 1764 2216 svchost.exe 40 PID 2216 wrote to memory of 1764 2216 svchost.exe 40 PID 1764 wrote to memory of 1852 1764 cmd.exe 42 PID 1764 wrote to memory of 1852 1764 cmd.exe 42 PID 1764 wrote to memory of 1852 1764 cmd.exe 42 PID 1764 wrote to memory of 640 1764 cmd.exe 43 PID 1764 wrote to memory of 640 1764 cmd.exe 43 PID 1764 wrote to memory of 640 1764 cmd.exe 43 PID 2216 wrote to memory of 2408 2216 svchost.exe 44 PID 2216 wrote to memory of 2408 2216 svchost.exe 44 PID 2216 wrote to memory of 2408 2216 svchost.exe 44 PID 2408 wrote to memory of 928 2408 cmd.exe 46 PID 2408 wrote to memory of 928 2408 cmd.exe 46 PID 2408 wrote to memory of 928 2408 cmd.exe 46 PID 2216 wrote to memory of 2480 2216 svchost.exe 50 PID 2216 wrote to memory of 2480 2216 svchost.exe 50 PID 2216 wrote to memory of 2480 2216 svchost.exe 50 -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
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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\QON0P_FreeVbucks.exe"C:\Users\Admin\AppData\Local\Temp\QON0P_FreeVbucks.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2772 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2216 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:520 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2084
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2460
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no3⤵
- Suspicious use of WriteProcessMemory
PID:1764 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:1852
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:640
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2408 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:928
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_it.txt3⤵
- Opens file in notepad (likely ransom note)
PID:2480
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1692
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1784
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2364
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:1028
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
2.7MB
MD5a988089a040efd226b8c801f1d527d17
SHA12cf4a52f0d2313dd7a7619bbc61681aecdcb2610
SHA25640a4b00e9904e973795b36d57e35da10f2543dfc55a54ac25a88da5c53e55a84
SHA512e591aafc86c3c370be73347441bd576c995538f8d19fcadc3e25f9c36193d3be08fbb5a65134d84168b203c87f5d533a96442f481f8c14741f36d4ed9a8277e4
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Filesize
964B
MD54217b8b83ce3c3f70029a056546f8fd0
SHA1487cdb5733d073a0427418888e8f7070fe782a03
SHA2567d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121
SHA5122a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740