Analysis
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max time kernel
138s -
max time network
140s -
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 03:46
Behavioral task
behavioral1
Sample
be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe
Resource
win7-20240903-en
windows7-x64
20 signatures
150 seconds
Behavioral task
behavioral2
Sample
be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe
Resource
win10v2004-20241007-en
windows10-2004-x64
23 signatures
150 seconds
General
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Target
be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe
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Size
142KB
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MD5
af70883f7ff9f9c19286ed07972bab84
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SHA1
5d59cc33696cdc78f59448f2f6fb6cb08622b976
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SHA256
be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150
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SHA512
bfea6fa338ad9bb2be18a7fe1398d82f01258be0f57a3f2129a2b3e08342771faca874dcf0f257b54b14c49003789f139fe8fe9e5ca6b53d352670f6549438d1
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SSDEEP
3072:o3kGRr9i0TVKIe6m8sdpcL0uhq70NEqj5Swo29V56K+Olhly3UdcHkl:+r9i0sIF5gdQubv29V56K+ihly3MN
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/1328-1-0x0000000000B90000-0x0000000000BBA000-memory.dmp family_chaos behavioral2/files/0x0004000000022b13-6.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 1924 bcdedit.exe 1828 bcdedit.exe -
Processes:
wbadmin.exepid Process 3236 wbadmin.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exesvchoster.exedescription ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe Key value queried \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation svchoster.exe -
Drops startup file 3 IoCs
Processes:
svchoster.exedescription ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchoster.url svchoster.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini svchoster.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\read_it.txt svchoster.exe -
Executes dropped EXE 1 IoCs
Processes:
svchoster.exepid Process 1784 svchoster.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:
svchoster.exedescription ioc Process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\Desktop.ini svchoster.exe File opened for modification C:\Users\Public\Pictures\desktop.ini svchoster.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchoster.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini svchoster.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini svchoster.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini svchoster.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchoster.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini svchoster.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-2437139445-1151884604-3026847218-1000\desktop.ini svchoster.exe File opened for modification C:\Users\Admin\Music\desktop.ini svchoster.exe File opened for modification C:\Users\Admin\Searches\desktop.ini svchoster.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini svchoster.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AccountPictures\desktop.ini svchoster.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini svchoster.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\desktop.ini svchoster.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini svchoster.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini svchoster.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchoster.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini svchoster.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchoster.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini svchoster.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini svchoster.exe File opened for modification C:\Users\Admin\Videos\desktop.ini svchoster.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini svchoster.exe File opened for modification C:\Users\Public\Music\desktop.ini svchoster.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini svchoster.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchoster.exe File opened for modification C:\Users\Admin\Links\desktop.ini svchoster.exe File opened for modification C:\Users\Admin\Pictures\Camera Roll\desktop.ini svchoster.exe File opened for modification C:\Users\Admin\Pictures\Saved Pictures\desktop.ini svchoster.exe File opened for modification C:\Users\Admin\OneDrive\desktop.ini svchoster.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\desktop.ini svchoster.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\desktop.ini svchoster.exe File opened for modification C:\Users\Public\Desktop\desktop.ini svchoster.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
Processes:
svchoster.exedescription ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\noxsje5qe.jpg" svchoster.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 612 vssadmin.exe -
Modifies registry class 1 IoCs
Processes:
svchoster.exedescription ioc Process Key created \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000_Classes\Local Settings svchoster.exe -
Opens file in notepad (likely ransom note) 1 IoCs
Processes:
NOTEPAD.EXEpid Process 1948 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
svchoster.exepid Process 1784 svchoster.exe -
Suspicious behavior: EnumeratesProcesses 49 IoCs
Processes:
be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exesvchoster.exepid Process 1328 be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe 1328 be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe 1328 be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe 1328 be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe 1328 be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe 1328 be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe 1328 be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe 1328 be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe 1328 be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe 1328 be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe 1328 be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe 1328 be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe 1328 be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe 1328 be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe 1328 be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe 1328 be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe 1328 be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe 1328 be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe 1328 be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe 1328 be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe 1328 be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe 1328 be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe 1328 be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe 1328 be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe 1328 be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe 1784 svchoster.exe 1784 svchoster.exe 1784 svchoster.exe 1784 svchoster.exe 1784 svchoster.exe 1784 svchoster.exe 1784 svchoster.exe 1784 svchoster.exe 1784 svchoster.exe 1784 svchoster.exe 1784 svchoster.exe 1784 svchoster.exe 1784 svchoster.exe 1784 svchoster.exe 1784 svchoster.exe 1784 svchoster.exe 1784 svchoster.exe 1784 svchoster.exe 1784 svchoster.exe 1784 svchoster.exe 1784 svchoster.exe 1784 svchoster.exe 1784 svchoster.exe 1784 svchoster.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
Processes:
be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exesvchoster.exevssvc.exeWMIC.exewbengine.exedescription pid Process Token: SeDebugPrivilege 1328 be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe Token: SeDebugPrivilege 1784 svchoster.exe Token: SeBackupPrivilege 644 vssvc.exe Token: SeRestorePrivilege 644 vssvc.exe Token: SeAuditPrivilege 644 vssvc.exe Token: SeIncreaseQuotaPrivilege 4344 WMIC.exe Token: SeSecurityPrivilege 4344 WMIC.exe Token: SeTakeOwnershipPrivilege 4344 WMIC.exe Token: SeLoadDriverPrivilege 4344 WMIC.exe Token: SeSystemProfilePrivilege 4344 WMIC.exe Token: SeSystemtimePrivilege 4344 WMIC.exe Token: SeProfSingleProcessPrivilege 4344 WMIC.exe Token: SeIncBasePriorityPrivilege 4344 WMIC.exe Token: SeCreatePagefilePrivilege 4344 WMIC.exe Token: SeBackupPrivilege 4344 WMIC.exe Token: SeRestorePrivilege 4344 WMIC.exe Token: SeShutdownPrivilege 4344 WMIC.exe Token: SeDebugPrivilege 4344 WMIC.exe Token: SeSystemEnvironmentPrivilege 4344 WMIC.exe Token: SeRemoteShutdownPrivilege 4344 WMIC.exe Token: SeUndockPrivilege 4344 WMIC.exe Token: SeManageVolumePrivilege 4344 WMIC.exe Token: 33 4344 WMIC.exe Token: 34 4344 WMIC.exe Token: 35 4344 WMIC.exe Token: 36 4344 WMIC.exe Token: SeIncreaseQuotaPrivilege 4344 WMIC.exe Token: SeSecurityPrivilege 4344 WMIC.exe Token: SeTakeOwnershipPrivilege 4344 WMIC.exe Token: SeLoadDriverPrivilege 4344 WMIC.exe Token: SeSystemProfilePrivilege 4344 WMIC.exe Token: SeSystemtimePrivilege 4344 WMIC.exe Token: SeProfSingleProcessPrivilege 4344 WMIC.exe Token: SeIncBasePriorityPrivilege 4344 WMIC.exe Token: SeCreatePagefilePrivilege 4344 WMIC.exe Token: SeBackupPrivilege 4344 WMIC.exe Token: SeRestorePrivilege 4344 WMIC.exe Token: SeShutdownPrivilege 4344 WMIC.exe Token: SeDebugPrivilege 4344 WMIC.exe Token: SeSystemEnvironmentPrivilege 4344 WMIC.exe Token: SeRemoteShutdownPrivilege 4344 WMIC.exe Token: SeUndockPrivilege 4344 WMIC.exe Token: SeManageVolumePrivilege 4344 WMIC.exe Token: 33 4344 WMIC.exe Token: 34 4344 WMIC.exe Token: 35 4344 WMIC.exe Token: 36 4344 WMIC.exe Token: SeBackupPrivilege 1136 wbengine.exe Token: SeRestorePrivilege 1136 wbengine.exe Token: SeSecurityPrivilege 1136 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
Processes:
be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exesvchoster.execmd.execmd.execmd.exedescription pid Process procid_target PID 1328 wrote to memory of 1784 1328 be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe 90 PID 1328 wrote to memory of 1784 1328 be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe 90 PID 1784 wrote to memory of 1912 1784 svchoster.exe 95 PID 1784 wrote to memory of 1912 1784 svchoster.exe 95 PID 1912 wrote to memory of 612 1912 cmd.exe 97 PID 1912 wrote to memory of 612 1912 cmd.exe 97 PID 1912 wrote to memory of 4344 1912 cmd.exe 101 PID 1912 wrote to memory of 4344 1912 cmd.exe 101 PID 1784 wrote to memory of 2824 1784 svchoster.exe 102 PID 1784 wrote to memory of 2824 1784 svchoster.exe 102 PID 2824 wrote to memory of 1924 2824 cmd.exe 104 PID 2824 wrote to memory of 1924 2824 cmd.exe 104 PID 2824 wrote to memory of 1828 2824 cmd.exe 105 PID 2824 wrote to memory of 1828 2824 cmd.exe 105 PID 1784 wrote to memory of 4816 1784 svchoster.exe 106 PID 1784 wrote to memory of 4816 1784 svchoster.exe 106 PID 4816 wrote to memory of 3236 4816 cmd.exe 108 PID 4816 wrote to memory of 3236 4816 cmd.exe 108 PID 1784 wrote to memory of 1948 1784 svchoster.exe 115 PID 1784 wrote to memory of 1948 1784 svchoster.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\be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe"C:\Users\Admin\AppData\Local\Temp\be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1328 -
C:\Users\Admin\AppData\Roaming\svchoster.exe"C:\Users\Admin\AppData\Roaming\svchoster.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:1784 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:1912 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:612
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:4344
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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:2824 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:1924
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:1828
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:4816 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:3236
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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:1948
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:644
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1136
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:1900
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:2704
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
142KB
MD5af70883f7ff9f9c19286ed07972bab84
SHA15d59cc33696cdc78f59448f2f6fb6cb08622b976
SHA256be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150
SHA512bfea6fa338ad9bb2be18a7fe1398d82f01258be0f57a3f2129a2b3e08342771faca874dcf0f257b54b14c49003789f139fe8fe9e5ca6b53d352670f6549438d1
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Filesize
111B
MD5016ab2aa899fdab8fe2dd4c4bb73548d
SHA12bf57b835d272a3b0b5f29fb145ac6bd509cd53c
SHA256223706ee4377f157850bdffaa87c85ce49fb15bade70d08e19c3138106134748
SHA512d46b73dd0ff072904b513dce54c164a30e0262b735d9254ffc7b596a2e691b2aa20ef57c82e95667ac5e051fbcc8be0bd82a49bdf0795058ab0a2b6ca3da3dab