Analysis
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max time kernel
96s -
max time network
138s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
19-11-2024 02:55
Behavioral task
behavioral1
Sample
TestServer.exe
Resource
win7-20241023-en
windows7-x64
20 signatures
150 seconds
Behavioral task
behavioral2
Sample
TestServer.exe
Resource
win10v2004-20241007-en
windows10-2004-x64
23 signatures
150 seconds
General
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Target
TestServer.exe
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Size
107KB
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MD5
c133ce6541688d84cfb35186fa8ad88f
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SHA1
67d7c34ce8548ffcd1ec4f8608beba7a06b1fb0b
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SHA256
9b74a10d6efbf33d56285505ae702947ea333447bfc583537f14018569b62ea6
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SHA512
81efaf9f3b580ec37d5237663cca2f0ef8d9683304ee9a679da6be2c30961adad8c7bb38b64b0f1fbd4163667927871e912e0b669de2796cb14c370ea5707d50
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SSDEEP
384:N3Mg/bqo2W4fSpJpMDKw/+988Jrr91CvpQHACQIdQepRsva46eLrTH+33M3zJ1oL:3qo2apMDN/NUrr9Ip5epij
Malware Config
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/2116-1-0x0000000000790000-0x00000000007B0000-memory.dmp family_chaos behavioral2/files/0x0009000000023c7d-7.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
pid Process 972 bcdedit.exe 3032 bcdedit.exe -
pid Process 5024 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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation svchost.exe Key value queried \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation TestServer.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\FORNATHAN.txt svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 2876 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\Pictures\Saved Pictures\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\User Pinned\TaskBar\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\Recent\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\OneDrive\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\Internet Explorer\Quick Launch\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\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\Pictures\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\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\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\Admin\Music\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\Administrative Tools\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-1045960512-3948844814-3059691613-1000\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\Pictures\Camera Roll\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\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\xdzjtddd9.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.
description 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.
pid Process 4216 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 3636 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2876 svchost.exe -
Suspicious behavior: EnumeratesProcesses 49 IoCs
pid Process 2116 TestServer.exe 2116 TestServer.exe 2116 TestServer.exe 2116 TestServer.exe 2116 TestServer.exe 2116 TestServer.exe 2116 TestServer.exe 2116 TestServer.exe 2116 TestServer.exe 2116 TestServer.exe 2116 TestServer.exe 2116 TestServer.exe 2116 TestServer.exe 2116 TestServer.exe 2116 TestServer.exe 2116 TestServer.exe 2116 TestServer.exe 2116 TestServer.exe 2116 TestServer.exe 2116 TestServer.exe 2116 TestServer.exe 2116 TestServer.exe 2116 TestServer.exe 2876 svchost.exe 2876 svchost.exe 2876 svchost.exe 2876 svchost.exe 2876 svchost.exe 2876 svchost.exe 2876 svchost.exe 2876 svchost.exe 2876 svchost.exe 2876 svchost.exe 2876 svchost.exe 2876 svchost.exe 2876 svchost.exe 2876 svchost.exe 2876 svchost.exe 2876 svchost.exe 2876 svchost.exe 2876 svchost.exe 2876 svchost.exe 2876 svchost.exe 2876 svchost.exe 2876 svchost.exe 2876 svchost.exe 2876 svchost.exe 2876 svchost.exe 2876 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 2116 TestServer.exe Token: SeDebugPrivilege 2876 svchost.exe Token: SeBackupPrivilege 1688 vssvc.exe Token: SeRestorePrivilege 1688 vssvc.exe Token: SeAuditPrivilege 1688 vssvc.exe Token: SeIncreaseQuotaPrivilege 2908 WMIC.exe Token: SeSecurityPrivilege 2908 WMIC.exe Token: SeTakeOwnershipPrivilege 2908 WMIC.exe Token: SeLoadDriverPrivilege 2908 WMIC.exe Token: SeSystemProfilePrivilege 2908 WMIC.exe Token: SeSystemtimePrivilege 2908 WMIC.exe Token: SeProfSingleProcessPrivilege 2908 WMIC.exe Token: SeIncBasePriorityPrivilege 2908 WMIC.exe Token: SeCreatePagefilePrivilege 2908 WMIC.exe Token: SeBackupPrivilege 2908 WMIC.exe Token: SeRestorePrivilege 2908 WMIC.exe Token: SeShutdownPrivilege 2908 WMIC.exe Token: SeDebugPrivilege 2908 WMIC.exe Token: SeSystemEnvironmentPrivilege 2908 WMIC.exe Token: SeRemoteShutdownPrivilege 2908 WMIC.exe Token: SeUndockPrivilege 2908 WMIC.exe Token: SeManageVolumePrivilege 2908 WMIC.exe Token: 33 2908 WMIC.exe Token: 34 2908 WMIC.exe Token: 35 2908 WMIC.exe Token: 36 2908 WMIC.exe Token: SeIncreaseQuotaPrivilege 2908 WMIC.exe Token: SeSecurityPrivilege 2908 WMIC.exe Token: SeTakeOwnershipPrivilege 2908 WMIC.exe Token: SeLoadDriverPrivilege 2908 WMIC.exe Token: SeSystemProfilePrivilege 2908 WMIC.exe Token: SeSystemtimePrivilege 2908 WMIC.exe Token: SeProfSingleProcessPrivilege 2908 WMIC.exe Token: SeIncBasePriorityPrivilege 2908 WMIC.exe Token: SeCreatePagefilePrivilege 2908 WMIC.exe Token: SeBackupPrivilege 2908 WMIC.exe Token: SeRestorePrivilege 2908 WMIC.exe Token: SeShutdownPrivilege 2908 WMIC.exe Token: SeDebugPrivilege 2908 WMIC.exe Token: SeSystemEnvironmentPrivilege 2908 WMIC.exe Token: SeRemoteShutdownPrivilege 2908 WMIC.exe Token: SeUndockPrivilege 2908 WMIC.exe Token: SeManageVolumePrivilege 2908 WMIC.exe Token: 33 2908 WMIC.exe Token: 34 2908 WMIC.exe Token: 35 2908 WMIC.exe Token: 36 2908 WMIC.exe Token: SeBackupPrivilege 3040 wbengine.exe Token: SeRestorePrivilege 3040 wbengine.exe Token: SeSecurityPrivilege 3040 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 2116 wrote to memory of 2876 2116 TestServer.exe 100 PID 2116 wrote to memory of 2876 2116 TestServer.exe 100 PID 2876 wrote to memory of 1240 2876 svchost.exe 102 PID 2876 wrote to memory of 1240 2876 svchost.exe 102 PID 1240 wrote to memory of 4216 1240 cmd.exe 104 PID 1240 wrote to memory of 4216 1240 cmd.exe 104 PID 1240 wrote to memory of 2908 1240 cmd.exe 108 PID 1240 wrote to memory of 2908 1240 cmd.exe 108 PID 2876 wrote to memory of 3500 2876 svchost.exe 109 PID 2876 wrote to memory of 3500 2876 svchost.exe 109 PID 3500 wrote to memory of 972 3500 cmd.exe 111 PID 3500 wrote to memory of 972 3500 cmd.exe 111 PID 3500 wrote to memory of 3032 3500 cmd.exe 112 PID 3500 wrote to memory of 3032 3500 cmd.exe 112 PID 2876 wrote to memory of 3140 2876 svchost.exe 113 PID 2876 wrote to memory of 3140 2876 svchost.exe 113 PID 3140 wrote to memory of 5024 3140 cmd.exe 115 PID 3140 wrote to memory of 5024 3140 cmd.exe 115 PID 2876 wrote to memory of 3636 2876 svchost.exe 119 PID 2876 wrote to memory of 3636 2876 svchost.exe 119 -
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\TestServer.exe"C:\Users\Admin\AppData\Local\Temp\TestServer.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2116 -
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:2876 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:1240 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:4216
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2908
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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:3500 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:972
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:3032
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:3140 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:5024
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\FORNATHAN.txt3⤵
- Opens file in notepad (likely ransom note)
PID:3636
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1688
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3040
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:3916
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:4452
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
107KB
MD5c133ce6541688d84cfb35186fa8ad88f
SHA167d7c34ce8548ffcd1ec4f8608beba7a06b1fb0b
SHA2569b74a10d6efbf33d56285505ae702947ea333447bfc583537f14018569b62ea6
SHA51281efaf9f3b580ec37d5237663cca2f0ef8d9683304ee9a679da6be2c30961adad8c7bb38b64b0f1fbd4163667927871e912e0b669de2796cb14c370ea5707d50
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Filesize
1KB
MD5fe77eea33bfab77e62aa9c84307322d7
SHA1a0ae02f0e7fef9da285a2ef350fb389309761171
SHA256728c388adb493e26c58db0970a59573e7cb136e5463076324bd978d8b6bf0e2f
SHA5129ced19eaaffdbae688137b2d26ef5de30e5310acb2dc1801607437154fad690aeed5c08971a1395495dc72175178ce7b18a5a73ab272ca1e34abd316091da295