chaos | 438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d

Analysis

max time kernel
135s
max time network
137s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
12/08/2024, 00:22

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General

Target
438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d.exe
Size 32KB
Sample240812-an2xfs1arc
SHA256 438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d
MD5 aec65cd697c52926d76f888c0f1958b2
SHA1 603b2537703cfc6c4addf8ef1480ce33601f6117
SHA512 c1a5d23b5cd9b378a6031c6ca1bfe65da424bb60c9e404401ca139eee1a3e6f78fc1bae1f38e493ccd3fcaa7b905b6caab2a36d19648acf76e63874df48278a4
SSDEEP 384:h3MLWHn3kI9a0JI8ITMpypoGroX3Jxr91CppZkM5hEM5eF:hn3kItJInTMpxMs5xr9OpZkM5hE2eF
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

chaos defense_evasion evasion execution impact ransomware spyware stealer

Malware Config

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 2 IoCs

resource	yara_rule
behavioral2/memory/2976-0-0x0000000000D80000-0x0000000000D8E000-memory.dmp	family_chaos
behavioral2/files/0x00090000000233b2-6.dat	family_chaos

Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware defense_evasion impact execution

File Deletion
T1070.004

Inhibit System Recovery
T1490

Windows Management Instrumentation
T1047

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
2072	bcdedit.exe
2940	bcdedit.exe

Deletes backup catalog 3 TTPs 1 IoCs

Uses wbadmin.exe to inhibit system recovery.

ransomware

Command and Scripting Interpreter

T1059

File Deletion

T1070.004

Inhibit System Recovery

T1490

pid	Process
2232	wbadmin.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\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
3360	svchost.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Drops desktop.ini file(s) 34 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Saved Games\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\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\Downloads\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\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\Saved Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\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\System Tools\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\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\OneDrive\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\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\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AccountPictures\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-1194130065-3471212556-1656947724-1000\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\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\Windows\Recent\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\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\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	svchost.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Checks SCSI registry key(s) 3 TTPs 4 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_WDC&PROD_WDS100T2B0A\4&215468A5&0&000000	vds.exe

Interacts with shadow copies 3 TTPs 1 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

Direct Volume Access

T1006

pid	Process
2992	vssadmin.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000_Classes\Local Settings	svchost.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
4880	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3360	svchost.exe

Suspicious behavior: EnumeratesProcesses 49 IoCs

pid	Process
2976	438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d.exe
2976	438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d.exe
2976	438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d.exe
2976	438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d.exe
2976	438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d.exe
2976	438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d.exe
2976	438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d.exe
2976	438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d.exe
2976	438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d.exe
2976	438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d.exe
2976	438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d.exe
2976	438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d.exe
2976	438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d.exe
2976	438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d.exe
2976	438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d.exe
2976	438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d.exe
2976	438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d.exe
2976	438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d.exe
2976	438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d.exe
2976	438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d.exe
2976	438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d.exe
2976	438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d.exe
2976	438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d.exe
3360	svchost.exe
3360	svchost.exe
3360	svchost.exe
3360	svchost.exe
3360	svchost.exe
3360	svchost.exe
3360	svchost.exe
3360	svchost.exe
3360	svchost.exe
3360	svchost.exe
3360	svchost.exe
3360	svchost.exe
3360	svchost.exe
3360	svchost.exe
3360	svchost.exe
3360	svchost.exe
3360	svchost.exe
3360	svchost.exe
3360	svchost.exe
3360	svchost.exe
3360	svchost.exe
3360	svchost.exe
3360	svchost.exe
3360	svchost.exe
3360	svchost.exe
3360	svchost.exe

Suspicious use of AdjustPrivilegeToken 50 IoCs

description	pid	Process
Token: SeDebugPrivilege	2976	438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d.exe
Token: SeDebugPrivilege	3360	svchost.exe
Token: SeBackupPrivilege	2644	vssvc.exe
Token: SeRestorePrivilege	2644	vssvc.exe
Token: SeAuditPrivilege	2644	vssvc.exe
Token: SeIncreaseQuotaPrivilege	2148	WMIC.exe
Token: SeSecurityPrivilege	2148	WMIC.exe
Token: SeTakeOwnershipPrivilege	2148	WMIC.exe
Token: SeLoadDriverPrivilege	2148	WMIC.exe
Token: SeSystemProfilePrivilege	2148	WMIC.exe
Token: SeSystemtimePrivilege	2148	WMIC.exe
Token: SeProfSingleProcessPrivilege	2148	WMIC.exe
Token: SeIncBasePriorityPrivilege	2148	WMIC.exe
Token: SeCreatePagefilePrivilege	2148	WMIC.exe
Token: SeBackupPrivilege	2148	WMIC.exe
Token: SeRestorePrivilege	2148	WMIC.exe
Token: SeShutdownPrivilege	2148	WMIC.exe
Token: SeDebugPrivilege	2148	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2148	WMIC.exe
Token: SeRemoteShutdownPrivilege	2148	WMIC.exe
Token: SeUndockPrivilege	2148	WMIC.exe
Token: SeManageVolumePrivilege	2148	WMIC.exe
Token: 33	2148	WMIC.exe
Token: 34	2148	WMIC.exe
Token: 35	2148	WMIC.exe
Token: 36	2148	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2148	WMIC.exe
Token: SeSecurityPrivilege	2148	WMIC.exe
Token: SeTakeOwnershipPrivilege	2148	WMIC.exe
Token: SeLoadDriverPrivilege	2148	WMIC.exe
Token: SeSystemProfilePrivilege	2148	WMIC.exe
Token: SeSystemtimePrivilege	2148	WMIC.exe
Token: SeProfSingleProcessPrivilege	2148	WMIC.exe
Token: SeIncBasePriorityPrivilege	2148	WMIC.exe
Token: SeCreatePagefilePrivilege	2148	WMIC.exe
Token: SeBackupPrivilege	2148	WMIC.exe
Token: SeRestorePrivilege	2148	WMIC.exe
Token: SeShutdownPrivilege	2148	WMIC.exe
Token: SeDebugPrivilege	2148	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2148	WMIC.exe
Token: SeRemoteShutdownPrivilege	2148	WMIC.exe
Token: SeUndockPrivilege	2148	WMIC.exe
Token: SeManageVolumePrivilege	2148	WMIC.exe
Token: 33	2148	WMIC.exe
Token: 34	2148	WMIC.exe
Token: 35	2148	WMIC.exe
Token: 36	2148	WMIC.exe
Token: SeBackupPrivilege	4464	wbengine.exe
Token: SeRestorePrivilege	4464	wbengine.exe
Token: SeSecurityPrivilege	4464	wbengine.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2976 wrote to memory of 3360	2976	438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d.exe	95
PID 2976 wrote to memory of 3360	2976	438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d.exe	95
PID 3360 wrote to memory of 5076	3360	svchost.exe	97
PID 3360 wrote to memory of 5076	3360	svchost.exe	97
PID 5076 wrote to memory of 2992	5076	cmd.exe	99
PID 5076 wrote to memory of 2992	5076	cmd.exe	99
PID 5076 wrote to memory of 2148	5076	cmd.exe	102
PID 5076 wrote to memory of 2148	5076	cmd.exe	102
PID 3360 wrote to memory of 2388	3360	svchost.exe	103
PID 3360 wrote to memory of 2388	3360	svchost.exe	103
PID 2388 wrote to memory of 2072	2388	cmd.exe	105
PID 2388 wrote to memory of 2072	2388	cmd.exe	105
PID 2388 wrote to memory of 2940	2388	cmd.exe	106
PID 2388 wrote to memory of 2940	2388	cmd.exe	106
PID 3360 wrote to memory of 3696	3360	svchost.exe	107
PID 3360 wrote to memory of 3696	3360	svchost.exe	107
PID 3696 wrote to memory of 2232	3696	cmd.exe	109
PID 3696 wrote to memory of 2232	3696	cmd.exe	109
PID 3360 wrote to memory of 4880	3360	svchost.exe	113
PID 3360 wrote to memory of 4880	3360	svchost.exe	113

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.
persistence

Query Registry
T1012
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d.exe
"C:\Users\Admin\AppData\Local\Temp\438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2976
- 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:3360
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:5076
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2992
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2148
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2388
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2072
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2940
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3696
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:2232
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_it.txt
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:4880

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2644

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4464

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:4176

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
- Checks SCSI registry key(s)
PID:3892

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Management Instrumentation

T1047

Persistence

Privilege Escalation

Defense Evasion

Direct Volume Access

T1006

Indicator Removal

T1070

File Deletion

T1070.004

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

svchost.exe

Path C:\Users\Admin\AppData\Roaming\svchost.exe
Size 32KB
SHA256 438764714bb650393cdeba7bfa9e0ba039cd566fc35e4565dc2855d1e086f16d
MD5 aec65cd697c52926d76f888c0f1958b2
SHA1 603b2537703cfc6c4addf8ef1480ce33601f6117
SHA512 c1a5d23b5cd9b378a6031c6ca1bfe65da424bb60c9e404401ca139eee1a3e6f78fc1bae1f38e493ccd3fcaa7b905b6caab2a36d19648acf76e63874df48278a4
SSDEEP 384:h3MLWHn3kI9a0JI8ITMpypoGroX3Jxr91CppZkM5hEM5eF:hn3kItJInTMpxMs5xr9OpZkM5hE2eF
MD5 SHA1 SHA512 SSDEEP

Submit Download

read_it.txt

Path C:\Users\Admin\Desktop\read_it.txt
Size 6KB
SHA256 22ae9851e674f1b329ce25601e242406886c9000f51823ecddea9ec1b9276918
MD5 fd2a0bdc9a576617d725d35784a6a824
SHA1 d08aed0fe2d1ace2a1bb466fb90826fc1e8d8e3b
SHA512 20ebf1c2e225644b6a9577c9a07bb8e06edaf93729f8bc472b004b79a6b19f5c5d45b6f4f3a36d86a9354bf360b27ed118cba76596dcbe915c8ba28897ac6e77
SSDEEP 48:8U1NeaHjuhsN5Gi5FcBMMypppjj000+aXyXoa:8U1AaHNGBMMypppjj000+aiXoa
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2976-0-0x0000000000D80000-0x0000000000D8E000-memory.dmp

Download

memory/2976-1-0x00007FF973F33000-0x00007FF973F35000-memory.dmp

Download

memory/3360-14-0x00007FF973F30000-0x00007FF9749F1000-memory.dmp

Download

memory/3360-69-0x00007FF973F30000-0x00007FF9749F1000-memory.dmp

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