Analysis
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max time kernel
361s -
max time network
366s -
platform
windows7_x64 -
resource
win7-20240705-en -
resource tags
arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system -
submitted
31-07-2024 21:47
Behavioral task
behavioral1
Sample
f9600b1b06588e3815a55eb81e35289f7b9a5749ae623550734c5f3d8c04e038.exe
Resource
win7-20240705-en
Behavioral task
behavioral2
Sample
f9600b1b06588e3815a55eb81e35289f7b9a5749ae623550734c5f3d8c04e038.exe
Resource
win10v2004-20240730-en
General
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Target
f9600b1b06588e3815a55eb81e35289f7b9a5749ae623550734c5f3d8c04e038.exe
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Size
1.3MB
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MD5
840eb9e50c131322605c5ea90ae1312f
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SHA1
fc9548f91123e05196dad6bcab11d29abd01500c
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SHA256
f9600b1b06588e3815a55eb81e35289f7b9a5749ae623550734c5f3d8c04e038
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SHA512
8e37c5890089bf1997e1c4c777a92f71eae9a86f11d1fb3cb3671dfa8c15c4365ed1f8811e6aae4d31f0fe73c1960b142f684a5274f086491f7d238a79313ffe
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SSDEEP
12288:75gafkW6xqP9iz8ZW29ohk3qHS/6gOHeA/MBU/7x5qDyNjC9Ha1DKs5y6blZRjHe:7Db/s/MSldTzfY/YRSv225PUXW8iF
Malware Config
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/1960-1-0x00000000009A0000-0x0000000000AF2000-memory.dmp family_chaos behavioral1/files/0x00080000000120f9-6.dat family_chaos behavioral1/memory/1008-8-0x0000000000090000-0x00000000001E2000-memory.dmp family_chaos -
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 1252 bcdedit.exe 1928 bcdedit.exe -
Renames multiple (188) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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pid Process 2964 wbadmin.exe -
Disables Task Manager via registry modification
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Drops startup file 2 IoCs
description ioc Process 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 1008 svchost.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000\Software\Microsoft\Windows\CurrentVersion\Run\UpdateTask = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe" svchost.exe -
Drops desktop.ini file(s) 64 IoCs
description ioc Process File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\Sample Music\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Ringtones\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Maintenance\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\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Tablet PC\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\Desktop\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\Admin\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\Public\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\CNQY6MQU\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Games\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\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\Public\Videos\Sample Videos\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\Admin\AppData\Local\Microsoft\Windows Mail\Stationery\Desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-3502430532-24693940-2469786940-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\4QLC8FPK\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\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini svchost.exe File opened for modification C:\Users\Public\Recorded TV\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\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\History\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\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\72EHROQQ\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\G2KVEH0D\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Burn\Burn\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\3WOHY2HJ\desktop.ini svchost.exe File opened for modification C:\Users\All Users\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\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\AWH2H80Y\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\B6089GTH\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Public\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\7JXML4U5\desktop.ini svchost.exe File opened for modification C:\Users\Public\Recorded TV\Sample Media\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\Public\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\History\History.IE5\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\mvcfkpmgi.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 2832 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 2184 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 2 IoCs
pid Process 1960 f9600b1b06588e3815a55eb81e35289f7b9a5749ae623550734c5f3d8c04e038.exe 1008 svchost.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 1960 f9600b1b06588e3815a55eb81e35289f7b9a5749ae623550734c5f3d8c04e038.exe 1960 f9600b1b06588e3815a55eb81e35289f7b9a5749ae623550734c5f3d8c04e038.exe 1960 f9600b1b06588e3815a55eb81e35289f7b9a5749ae623550734c5f3d8c04e038.exe 1008 svchost.exe 1008 svchost.exe 1008 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 1960 f9600b1b06588e3815a55eb81e35289f7b9a5749ae623550734c5f3d8c04e038.exe Token: SeDebugPrivilege 1008 svchost.exe Token: SeBackupPrivilege 2816 vssvc.exe Token: SeRestorePrivilege 2816 vssvc.exe Token: SeAuditPrivilege 2816 vssvc.exe Token: SeIncreaseQuotaPrivilege 2692 WMIC.exe Token: SeSecurityPrivilege 2692 WMIC.exe Token: SeTakeOwnershipPrivilege 2692 WMIC.exe Token: SeLoadDriverPrivilege 2692 WMIC.exe Token: SeSystemProfilePrivilege 2692 WMIC.exe Token: SeSystemtimePrivilege 2692 WMIC.exe Token: SeProfSingleProcessPrivilege 2692 WMIC.exe Token: SeIncBasePriorityPrivilege 2692 WMIC.exe Token: SeCreatePagefilePrivilege 2692 WMIC.exe Token: SeBackupPrivilege 2692 WMIC.exe Token: SeRestorePrivilege 2692 WMIC.exe Token: SeShutdownPrivilege 2692 WMIC.exe Token: SeDebugPrivilege 2692 WMIC.exe Token: SeSystemEnvironmentPrivilege 2692 WMIC.exe Token: SeRemoteShutdownPrivilege 2692 WMIC.exe Token: SeUndockPrivilege 2692 WMIC.exe Token: SeManageVolumePrivilege 2692 WMIC.exe Token: 33 2692 WMIC.exe Token: 34 2692 WMIC.exe Token: 35 2692 WMIC.exe Token: SeIncreaseQuotaPrivilege 2692 WMIC.exe Token: SeSecurityPrivilege 2692 WMIC.exe Token: SeTakeOwnershipPrivilege 2692 WMIC.exe Token: SeLoadDriverPrivilege 2692 WMIC.exe Token: SeSystemProfilePrivilege 2692 WMIC.exe Token: SeSystemtimePrivilege 2692 WMIC.exe Token: SeProfSingleProcessPrivilege 2692 WMIC.exe Token: SeIncBasePriorityPrivilege 2692 WMIC.exe Token: SeCreatePagefilePrivilege 2692 WMIC.exe Token: SeBackupPrivilege 2692 WMIC.exe Token: SeRestorePrivilege 2692 WMIC.exe Token: SeShutdownPrivilege 2692 WMIC.exe Token: SeDebugPrivilege 2692 WMIC.exe Token: SeSystemEnvironmentPrivilege 2692 WMIC.exe Token: SeRemoteShutdownPrivilege 2692 WMIC.exe Token: SeUndockPrivilege 2692 WMIC.exe Token: SeManageVolumePrivilege 2692 WMIC.exe Token: 33 2692 WMIC.exe Token: 34 2692 WMIC.exe Token: 35 2692 WMIC.exe Token: SeBackupPrivilege 1600 wbengine.exe Token: SeRestorePrivilege 1600 wbengine.exe Token: SeSecurityPrivilege 1600 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 1960 wrote to memory of 1008 1960 f9600b1b06588e3815a55eb81e35289f7b9a5749ae623550734c5f3d8c04e038.exe 30 PID 1960 wrote to memory of 1008 1960 f9600b1b06588e3815a55eb81e35289f7b9a5749ae623550734c5f3d8c04e038.exe 30 PID 1960 wrote to memory of 1008 1960 f9600b1b06588e3815a55eb81e35289f7b9a5749ae623550734c5f3d8c04e038.exe 30 PID 1008 wrote to memory of 2748 1008 svchost.exe 31 PID 1008 wrote to memory of 2748 1008 svchost.exe 31 PID 1008 wrote to memory of 2748 1008 svchost.exe 31 PID 2748 wrote to memory of 2832 2748 cmd.exe 33 PID 2748 wrote to memory of 2832 2748 cmd.exe 33 PID 2748 wrote to memory of 2832 2748 cmd.exe 33 PID 2748 wrote to memory of 2692 2748 cmd.exe 36 PID 2748 wrote to memory of 2692 2748 cmd.exe 36 PID 2748 wrote to memory of 2692 2748 cmd.exe 36 PID 1008 wrote to memory of 920 1008 svchost.exe 38 PID 1008 wrote to memory of 920 1008 svchost.exe 38 PID 1008 wrote to memory of 920 1008 svchost.exe 38 PID 920 wrote to memory of 1928 920 cmd.exe 40 PID 920 wrote to memory of 1928 920 cmd.exe 40 PID 920 wrote to memory of 1928 920 cmd.exe 40 PID 920 wrote to memory of 1252 920 cmd.exe 41 PID 920 wrote to memory of 1252 920 cmd.exe 41 PID 920 wrote to memory of 1252 920 cmd.exe 41 PID 1008 wrote to memory of 2044 1008 svchost.exe 42 PID 1008 wrote to memory of 2044 1008 svchost.exe 42 PID 1008 wrote to memory of 2044 1008 svchost.exe 42 PID 2044 wrote to memory of 2964 2044 cmd.exe 44 PID 2044 wrote to memory of 2964 2044 cmd.exe 44 PID 2044 wrote to memory of 2964 2044 cmd.exe 44 PID 1008 wrote to memory of 2184 1008 svchost.exe 49 PID 1008 wrote to memory of 2184 1008 svchost.exe 49 PID 1008 wrote to memory of 2184 1008 svchost.exe 49 -
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\f9600b1b06588e3815a55eb81e35289f7b9a5749ae623550734c5f3d8c04e038.exe"C:\Users\Admin\AppData\Local\Temp\f9600b1b06588e3815a55eb81e35289f7b9a5749ae623550734c5f3d8c04e038.exe"1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1960 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- 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:1008 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2748 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2832
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2692
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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:920 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:1928
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:1252
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2044 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:2964
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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:2184
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2816
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1600
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2024
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:1152
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
470B
MD58d343bf17ef14ed4108d2db0f866100a
SHA1c40e7c3d21224852317c9faa94fb9491798afe64
SHA256ff6234d40f59879bfb8cbc051303e5c40b7faab945a8b867937146cf693032a3
SHA5125ef8d0a32c7b00393f9ccec32ec5b65532c0cb15f7f03bd93920fe74d365a4805da55b26bc0c6ed56b96a47a1c186a673147cb67539a6e907e82416b331e9303
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Filesize
1.3MB
MD5840eb9e50c131322605c5ea90ae1312f
SHA1fc9548f91123e05196dad6bcab11d29abd01500c
SHA256f9600b1b06588e3815a55eb81e35289f7b9a5749ae623550734c5f3d8c04e038
SHA5128e37c5890089bf1997e1c4c777a92f71eae9a86f11d1fb3cb3671dfa8c15c4365ed1f8811e6aae4d31f0fe73c1960b142f684a5274f086491f7d238a79313ffe
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0