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Analysis
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max time kernel
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max time network
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platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
14/04/2024, 03:21
Behavioral task
behavioral1
Sample
jjj.exe
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
jjj.exe
Resource
win10v2004-20240412-en
General
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Target
jjj.exe
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Size
23KB
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MD5
042af9c511552255aed26954d500543c
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SHA1
e478b331aec1166f16a714e2a4320fcb04d54b16
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SHA256
b69bb28aa423914139a3edcf9fdb617f3105d971e628c4cd82bbd62b9fc32b85
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SHA512
5729179cce14e135b9e9d79d1acf4e518f2eadff604e5094e9f1eaf9e8c2ef9a3ada18905c55143fe2bbeaf020f3cff3b7e7e9b0845475353fff286a0cefa664
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SSDEEP
384:R3Mg/bqo2i5rMfpz0qjuwzUrJXmr91C221gYei:Tqo2Ir8pzRjKd2r9t2xei
Malware Config
Extracted
C:\Users\Admin\Documents\READ_IT.txt
https://ibb.co/RHs43WH
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 2 IoCs
resource yara_rule behavioral2/memory/3956-0-0x00000000009F0000-0x00000000009FC000-memory.dmp family_chaos behavioral2/files/0x0008000000023401-6.dat family_chaos -
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Detects command variations typically used by ransomware 2 IoCs
resource yara_rule behavioral2/memory/3956-0-0x00000000009F0000-0x00000000009FC000-memory.dmp INDICATOR_SUSPICIOUS_GENRansomware behavioral2/files/0x0008000000023401-6.dat INDICATOR_SUSPICIOUS_GENRansomware -
Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 1616 bcdedit.exe 4500 bcdedit.exe -
pid Process 3456 wbadmin.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation jjj.exe Key value queried \REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation svchost.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 4052 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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Drops desktop.ini file(s) 34 IoCs
description ioc Process File opened for modification C:\Users\Public\Desktop\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\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AccountPictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-355664440-2199602304-1223909400-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\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\Videos\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 File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\Camera Roll\desktop.ini svchost.exe File opened for modification C:\Users\Admin\OneDrive\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\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\Saved Pictures\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\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\Admin\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\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\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\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\AppData\Roaming\Microsoft\Windows\Start Menu\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\Programs\System Tools\Desktop.ini svchost.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks SCSI registry key(s) 3 TTPs 4 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_QEMU&PROD_QEMU_DVD-ROM\4&215468A5&0&010000 vds.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_QEMU&Prod_QEMU_DVD-ROM\4&215468a5&0&010000\FriendlyName vds.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_DADY&PROD_HARDDISK\4&215468A5&0&000000 vds.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName vds.exe -
Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 1744 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 5048 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 4052 svchost.exe -
Suspicious behavior: EnumeratesProcesses 47 IoCs
pid Process 3956 jjj.exe 3956 jjj.exe 3956 jjj.exe 3956 jjj.exe 3956 jjj.exe 3956 jjj.exe 3956 jjj.exe 3956 jjj.exe 3956 jjj.exe 3956 jjj.exe 3956 jjj.exe 3956 jjj.exe 3956 jjj.exe 3956 jjj.exe 3956 jjj.exe 3956 jjj.exe 3956 jjj.exe 3956 jjj.exe 3956 jjj.exe 3956 jjj.exe 3956 jjj.exe 3956 jjj.exe 3956 jjj.exe 4052 svchost.exe 4052 svchost.exe 4052 svchost.exe 4052 svchost.exe 4052 svchost.exe 4052 svchost.exe 4052 svchost.exe 4052 svchost.exe 4052 svchost.exe 4052 svchost.exe 4052 svchost.exe 4052 svchost.exe 4052 svchost.exe 4052 svchost.exe 4052 svchost.exe 4052 svchost.exe 4052 svchost.exe 4052 svchost.exe 4052 svchost.exe 4052 svchost.exe 4052 svchost.exe 4052 svchost.exe 4052 svchost.exe 4052 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 3956 jjj.exe Token: SeDebugPrivilege 4052 svchost.exe Token: SeBackupPrivilege 3284 vssvc.exe Token: SeRestorePrivilege 3284 vssvc.exe Token: SeAuditPrivilege 3284 vssvc.exe Token: SeIncreaseQuotaPrivilege 1600 WMIC.exe Token: SeSecurityPrivilege 1600 WMIC.exe Token: SeTakeOwnershipPrivilege 1600 WMIC.exe Token: SeLoadDriverPrivilege 1600 WMIC.exe Token: SeSystemProfilePrivilege 1600 WMIC.exe Token: SeSystemtimePrivilege 1600 WMIC.exe Token: SeProfSingleProcessPrivilege 1600 WMIC.exe Token: SeIncBasePriorityPrivilege 1600 WMIC.exe Token: SeCreatePagefilePrivilege 1600 WMIC.exe Token: SeBackupPrivilege 1600 WMIC.exe Token: SeRestorePrivilege 1600 WMIC.exe Token: SeShutdownPrivilege 1600 WMIC.exe Token: SeDebugPrivilege 1600 WMIC.exe Token: SeSystemEnvironmentPrivilege 1600 WMIC.exe Token: SeRemoteShutdownPrivilege 1600 WMIC.exe Token: SeUndockPrivilege 1600 WMIC.exe Token: SeManageVolumePrivilege 1600 WMIC.exe Token: 33 1600 WMIC.exe Token: 34 1600 WMIC.exe Token: 35 1600 WMIC.exe Token: 36 1600 WMIC.exe Token: SeIncreaseQuotaPrivilege 1600 WMIC.exe Token: SeSecurityPrivilege 1600 WMIC.exe Token: SeTakeOwnershipPrivilege 1600 WMIC.exe Token: SeLoadDriverPrivilege 1600 WMIC.exe Token: SeSystemProfilePrivilege 1600 WMIC.exe Token: SeSystemtimePrivilege 1600 WMIC.exe Token: SeProfSingleProcessPrivilege 1600 WMIC.exe Token: SeIncBasePriorityPrivilege 1600 WMIC.exe Token: SeCreatePagefilePrivilege 1600 WMIC.exe Token: SeBackupPrivilege 1600 WMIC.exe Token: SeRestorePrivilege 1600 WMIC.exe Token: SeShutdownPrivilege 1600 WMIC.exe Token: SeDebugPrivilege 1600 WMIC.exe Token: SeSystemEnvironmentPrivilege 1600 WMIC.exe Token: SeRemoteShutdownPrivilege 1600 WMIC.exe Token: SeUndockPrivilege 1600 WMIC.exe Token: SeManageVolumePrivilege 1600 WMIC.exe Token: 33 1600 WMIC.exe Token: 34 1600 WMIC.exe Token: 35 1600 WMIC.exe Token: 36 1600 WMIC.exe Token: SeBackupPrivilege 2312 wbengine.exe Token: SeRestorePrivilege 2312 wbengine.exe Token: SeSecurityPrivilege 2312 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 3956 wrote to memory of 4052 3956 jjj.exe 91 PID 3956 wrote to memory of 4052 3956 jjj.exe 91 PID 4052 wrote to memory of 1696 4052 svchost.exe 93 PID 4052 wrote to memory of 1696 4052 svchost.exe 93 PID 1696 wrote to memory of 1744 1696 cmd.exe 95 PID 1696 wrote to memory of 1744 1696 cmd.exe 95 PID 1696 wrote to memory of 1600 1696 cmd.exe 98 PID 1696 wrote to memory of 1600 1696 cmd.exe 98 PID 4052 wrote to memory of 2472 4052 svchost.exe 100 PID 4052 wrote to memory of 2472 4052 svchost.exe 100 PID 2472 wrote to memory of 1616 2472 cmd.exe 102 PID 2472 wrote to memory of 1616 2472 cmd.exe 102 PID 2472 wrote to memory of 4500 2472 cmd.exe 103 PID 2472 wrote to memory of 4500 2472 cmd.exe 103 PID 4052 wrote to memory of 4560 4052 svchost.exe 104 PID 4052 wrote to memory of 4560 4052 svchost.exe 104 PID 4560 wrote to memory of 3456 4560 cmd.exe 106 PID 4560 wrote to memory of 3456 4560 cmd.exe 106 PID 4052 wrote to memory of 5048 4052 svchost.exe 110 PID 4052 wrote to memory of 5048 4052 svchost.exe 110 -
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\jjj.exe"C:\Users\Admin\AppData\Local\Temp\jjj.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3956 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Checks computer location settings
- Drops startup file
- Executes dropped EXE
- Drops desktop.ini file(s)
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4052 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:1696 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:1744
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1600
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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:2472 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:1616
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:4500
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:4560 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:3456
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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:5048
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3284
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2312
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:452
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:432
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
23KB
MD5042af9c511552255aed26954d500543c
SHA1e478b331aec1166f16a714e2a4320fcb04d54b16
SHA256b69bb28aa423914139a3edcf9fdb617f3105d971e628c4cd82bbd62b9fc32b85
SHA5125729179cce14e135b9e9d79d1acf4e518f2eadff604e5094e9f1eaf9e8c2ef9a3ada18905c55143fe2bbeaf020f3cff3b7e7e9b0845475353fff286a0cefa664
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Filesize
714B
MD5bab79cb4fc18b75555a407cfbbad1cfb
SHA1884f8d416258fb32d8b54520df694a8b97e38baa
SHA2564922845e5199862745ea771d9905a8ee45592391539eb7663e352d21ca7fc5bd
SHA5122821935fd9a80d3253ec88b7f63ecedc1ae39c54ec081fa2e5ca673ad35ee2316336a995d9fb9dc52c5a07ee0afec98c9c04ee705c3cba7e73298d24f1e81cd9