Analysis
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max time kernel
149s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
03-11-2024 03:00
Behavioral task
behavioral1
Sample
739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exe
Resource
win10v2004-20241007-en
General
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Target
739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exe
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Size
388KB
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MD5
d313cf4e6bf5e9dcb2ed3e722984bc8e
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SHA1
21a28a94e0de60603ad1664a843717a8aeba30c9
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SHA256
739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951
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SHA512
2a0d479f8b299370bb67ce34f4dfb58b52c70e7edcfa1f9cb6c40a6162455b77aad70bfd1f619dda327d969852eb1c20c7768f1c4247450740c203521f37ff34
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SSDEEP
6144:fr9Sqdd/nDTCKm1ussOaOYNmJL2gGYBppgnvufOKvNbq7a+0blRIJ6Af:Dd1nDTC11utmSfqppmvufOgY7a+oRd
Malware Config
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 2 IoCs
Processes:
resource yara_rule behavioral2/memory/4564-1-0x0000000000D50000-0x0000000000DB6000-memory.dmp family_chaos behavioral2/files/0x000600000001da4f-6.dat 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
Processes:
bcdedit.exebcdedit.exepid Process 4452 bcdedit.exe 5016 bcdedit.exe -
Processes:
wbadmin.exepid Process 4208 wbadmin.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exesvchost.exedescription ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation 739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exe Key value queried \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation svchost.exe -
Drops startup file 3 IoCs
Processes:
svchost.exedescription 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
Processes:
svchost.exepid Process 2860 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
Processes:
svchost.exedescription ioc Process File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\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\OneDrive\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\Libraries\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\Public\Pictures\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\Start Menu\Programs\Accessories\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\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\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\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\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\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\SendTo\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-2045521122-590294423-3465680274-1000\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\Desktop\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\System Tools\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\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\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\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\Recent\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
Processes:
svchost.exedescription ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\39u8n25im.jpg" 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.
Processes:
vds.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_WDC&PROD_WDS100T2B0A\4&215468A5&0&000000 vds.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName vds.exe 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 -
Interacts with shadow copies 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
Processes:
vssadmin.exepid Process 5076 vssadmin.exe -
Modifies registry class 1 IoCs
Processes:
svchost.exedescription ioc Process Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
Processes:
NOTEPAD.EXEpid Process 3412 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
svchost.exepid Process 2860 svchost.exe -
Suspicious behavior: EnumeratesProcesses 47 IoCs
Processes:
739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exesvchost.exepid Process 4564 739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exe 4564 739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exe 4564 739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exe 4564 739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exe 4564 739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exe 4564 739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exe 4564 739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exe 4564 739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exe 4564 739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exe 4564 739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exe 4564 739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exe 4564 739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exe 4564 739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exe 4564 739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exe 4564 739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exe 4564 739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exe 4564 739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exe 4564 739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exe 4564 739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exe 4564 739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exe 4564 739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exe 4564 739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exe 4564 739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exe 2860 svchost.exe 2860 svchost.exe 2860 svchost.exe 2860 svchost.exe 2860 svchost.exe 2860 svchost.exe 2860 svchost.exe 2860 svchost.exe 2860 svchost.exe 2860 svchost.exe 2860 svchost.exe 2860 svchost.exe 2860 svchost.exe 2860 svchost.exe 2860 svchost.exe 2860 svchost.exe 2860 svchost.exe 2860 svchost.exe 2860 svchost.exe 2860 svchost.exe 2860 svchost.exe 2860 svchost.exe 2860 svchost.exe 2860 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
Processes:
739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exesvchost.exevssvc.exeWMIC.exewbengine.exedescription pid Process Token: SeDebugPrivilege 4564 739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exe Token: SeDebugPrivilege 2860 svchost.exe Token: SeBackupPrivilege 1616 vssvc.exe Token: SeRestorePrivilege 1616 vssvc.exe Token: SeAuditPrivilege 1616 vssvc.exe Token: SeIncreaseQuotaPrivilege 4080 WMIC.exe Token: SeSecurityPrivilege 4080 WMIC.exe Token: SeTakeOwnershipPrivilege 4080 WMIC.exe Token: SeLoadDriverPrivilege 4080 WMIC.exe Token: SeSystemProfilePrivilege 4080 WMIC.exe Token: SeSystemtimePrivilege 4080 WMIC.exe Token: SeProfSingleProcessPrivilege 4080 WMIC.exe Token: SeIncBasePriorityPrivilege 4080 WMIC.exe Token: SeCreatePagefilePrivilege 4080 WMIC.exe Token: SeBackupPrivilege 4080 WMIC.exe Token: SeRestorePrivilege 4080 WMIC.exe Token: SeShutdownPrivilege 4080 WMIC.exe Token: SeDebugPrivilege 4080 WMIC.exe Token: SeSystemEnvironmentPrivilege 4080 WMIC.exe Token: SeRemoteShutdownPrivilege 4080 WMIC.exe Token: SeUndockPrivilege 4080 WMIC.exe Token: SeManageVolumePrivilege 4080 WMIC.exe Token: 33 4080 WMIC.exe Token: 34 4080 WMIC.exe Token: 35 4080 WMIC.exe Token: 36 4080 WMIC.exe Token: SeIncreaseQuotaPrivilege 4080 WMIC.exe Token: SeSecurityPrivilege 4080 WMIC.exe Token: SeTakeOwnershipPrivilege 4080 WMIC.exe Token: SeLoadDriverPrivilege 4080 WMIC.exe Token: SeSystemProfilePrivilege 4080 WMIC.exe Token: SeSystemtimePrivilege 4080 WMIC.exe Token: SeProfSingleProcessPrivilege 4080 WMIC.exe Token: SeIncBasePriorityPrivilege 4080 WMIC.exe Token: SeCreatePagefilePrivilege 4080 WMIC.exe Token: SeBackupPrivilege 4080 WMIC.exe Token: SeRestorePrivilege 4080 WMIC.exe Token: SeShutdownPrivilege 4080 WMIC.exe Token: SeDebugPrivilege 4080 WMIC.exe Token: SeSystemEnvironmentPrivilege 4080 WMIC.exe Token: SeRemoteShutdownPrivilege 4080 WMIC.exe Token: SeUndockPrivilege 4080 WMIC.exe Token: SeManageVolumePrivilege 4080 WMIC.exe Token: 33 4080 WMIC.exe Token: 34 4080 WMIC.exe Token: 35 4080 WMIC.exe Token: 36 4080 WMIC.exe Token: SeBackupPrivilege 2096 wbengine.exe Token: SeRestorePrivilege 2096 wbengine.exe Token: SeSecurityPrivilege 2096 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
Processes:
739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exesvchost.execmd.execmd.execmd.exedescription pid Process procid_target PID 4564 wrote to memory of 2860 4564 739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exe 89 PID 4564 wrote to memory of 2860 4564 739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exe 89 PID 2860 wrote to memory of 1412 2860 svchost.exe 94 PID 2860 wrote to memory of 1412 2860 svchost.exe 94 PID 1412 wrote to memory of 5076 1412 cmd.exe 97 PID 1412 wrote to memory of 5076 1412 cmd.exe 97 PID 1412 wrote to memory of 4080 1412 cmd.exe 100 PID 1412 wrote to memory of 4080 1412 cmd.exe 100 PID 2860 wrote to memory of 2336 2860 svchost.exe 102 PID 2860 wrote to memory of 2336 2860 svchost.exe 102 PID 2336 wrote to memory of 4452 2336 cmd.exe 104 PID 2336 wrote to memory of 4452 2336 cmd.exe 104 PID 2336 wrote to memory of 5016 2336 cmd.exe 105 PID 2336 wrote to memory of 5016 2336 cmd.exe 105 PID 2860 wrote to memory of 1328 2860 svchost.exe 106 PID 2860 wrote to memory of 1328 2860 svchost.exe 106 PID 1328 wrote to memory of 4208 1328 cmd.exe 108 PID 1328 wrote to memory of 4208 1328 cmd.exe 108 PID 2860 wrote to memory of 3412 2860 svchost.exe 115 PID 2860 wrote to memory of 3412 2860 svchost.exe 115 -
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\739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exe"C:\Users\Admin\AppData\Local\Temp\739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4564 -
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)
- Sets desktop wallpaper using registry
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2860 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:1412 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:5076
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:4080
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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:2336 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:4452
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:5016
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1328 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:4208
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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:3412
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1616
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2096
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:400
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:5064
Network
MITRE ATT&CK Enterprise v15
Defense Evasion
Direct Volume Access
1Indicator Removal
3File Deletion
3Modify Registry
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
388KB
MD5d313cf4e6bf5e9dcb2ed3e722984bc8e
SHA121a28a94e0de60603ad1664a843717a8aeba30c9
SHA256739e1ab9e63ec4da436b2861c3c23111a823676896b6f2f40cf0051bf5c0e951
SHA5122a0d479f8b299370bb67ce34f4dfb58b52c70e7edcfa1f9cb6c40a6162455b77aad70bfd1f619dda327d969852eb1c20c7768f1c4247450740c203521f37ff34
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Filesize
722B
MD5d55bb9ee91282049366a8f31d80f7308
SHA1e2247b1b850d8ab895a66fbb11e2312277d560ce
SHA25601c250d8b2c7dedc5982edd61187ca77654415de0c28dea7605c1875a1a425c2
SHA51274dc8586975345f4e5fa1f20ac3ed772f35dd7ac077ab9682ec61acd38ecc5d69668c7c66b52aeccf15821434d640e7efa012ff8355b0db4b3d68ac99a8eb878