chaos | caa7475c37e5c8dd3e3d64a38c57ec2848d32b4329431fcdbed228d1293cfc58

Analysis

max time kernel
102s
max time network
131s
platform
windows10-2004_x64
resource
win10v2004-20250313-en
resource tags

arch:x64arch:x86image:win10v2004-20250313-enlocale:en-usos:windows10-2004-x64system
submitted
31/03/2025, 11:51

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2025-03-31_2cb05026447e400553acd808f13b0983_wannacry.exe
Size

587KB
MD5

2cb05026447e400553acd808f13b0983
SHA1

3c5c56adc1390f1701357e5474636a10dcb3aca5
SHA256

caa7475c37e5c8dd3e3d64a38c57ec2848d32b4329431fcdbed228d1293cfc58
SHA512

1a765444b1d5e2571c5fed65c65ea8add1e14913118ded11450def198c8d62e80ae2d7ac571ed68d31ed7b3975ce8afd393c048d7930c0c09999c728daf1b0a8
SSDEEP

12288:Vm5jhupxAmjkioNwJXdqQB4piYqgCmhDqUkeZ9oCOwAkT7/yz4+SNp/YdP:umoiRGbHjwEw

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
behavioral1/memory/1364-1-0x0000000000250000-0x00000000002EA000-memory.dmp	family_chaos
behavioral1/files/0x0004000000022a62-6.dat	family_chaos

Chaos 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
3140	bcdedit.exe
2392	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
1532	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-1-5-21-1279544337-3716153908-718418795-1000\Control Panel\International\Geo\Nation	2025-03-31_2cb05026447e400553acd808f13b0983_wannacry.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1279544337-3716153908-718418795-1000\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\666.txt	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3872	svchost.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Drops desktop.ini file(s) 34 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Favorites\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\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\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\AccountPictures\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\Downloads\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\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\Libraries\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\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\OneDrive\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\Desktop\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\Favorites\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\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\Searches\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\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-1279544337-3716153908-718418795-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\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\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

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1279544337-3716153908-718418795-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\l1qgi0dvc.jpg"	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 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.

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

Direct Volume Access

T1006

pid	Process
1996	vssadmin.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1279544337-3716153908-718418795-1000_Classes\Local Settings	svchost.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1432	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3872	svchost.exe

Suspicious behavior: EnumeratesProcesses 51 IoCs

pid	Process
1364	2025-03-31_2cb05026447e400553acd808f13b0983_wannacry.exe
1364	2025-03-31_2cb05026447e400553acd808f13b0983_wannacry.exe
1364	2025-03-31_2cb05026447e400553acd808f13b0983_wannacry.exe
1364	2025-03-31_2cb05026447e400553acd808f13b0983_wannacry.exe
1364	2025-03-31_2cb05026447e400553acd808f13b0983_wannacry.exe
1364	2025-03-31_2cb05026447e400553acd808f13b0983_wannacry.exe
1364	2025-03-31_2cb05026447e400553acd808f13b0983_wannacry.exe
1364	2025-03-31_2cb05026447e400553acd808f13b0983_wannacry.exe
1364	2025-03-31_2cb05026447e400553acd808f13b0983_wannacry.exe
1364	2025-03-31_2cb05026447e400553acd808f13b0983_wannacry.exe
1364	2025-03-31_2cb05026447e400553acd808f13b0983_wannacry.exe
1364	2025-03-31_2cb05026447e400553acd808f13b0983_wannacry.exe
1364	2025-03-31_2cb05026447e400553acd808f13b0983_wannacry.exe
1364	2025-03-31_2cb05026447e400553acd808f13b0983_wannacry.exe
1364	2025-03-31_2cb05026447e400553acd808f13b0983_wannacry.exe
1364	2025-03-31_2cb05026447e400553acd808f13b0983_wannacry.exe
1364	2025-03-31_2cb05026447e400553acd808f13b0983_wannacry.exe
1364	2025-03-31_2cb05026447e400553acd808f13b0983_wannacry.exe
1364	2025-03-31_2cb05026447e400553acd808f13b0983_wannacry.exe
1364	2025-03-31_2cb05026447e400553acd808f13b0983_wannacry.exe
1364	2025-03-31_2cb05026447e400553acd808f13b0983_wannacry.exe
1364	2025-03-31_2cb05026447e400553acd808f13b0983_wannacry.exe
1364	2025-03-31_2cb05026447e400553acd808f13b0983_wannacry.exe
1364	2025-03-31_2cb05026447e400553acd808f13b0983_wannacry.exe
1364	2025-03-31_2cb05026447e400553acd808f13b0983_wannacry.exe
3872	svchost.exe
3872	svchost.exe
3872	svchost.exe
3872	svchost.exe
3872	svchost.exe
3872	svchost.exe
3872	svchost.exe
3872	svchost.exe
3872	svchost.exe
3872	svchost.exe
3872	svchost.exe
3872	svchost.exe
3872	svchost.exe
3872	svchost.exe
3872	svchost.exe
3872	svchost.exe
3872	svchost.exe
3872	svchost.exe
3872	svchost.exe
3872	svchost.exe
3872	svchost.exe
3872	svchost.exe
3872	svchost.exe
3872	svchost.exe
3872	svchost.exe
3872	svchost.exe

Suspicious use of AdjustPrivilegeToken 50 IoCs

description	pid	Process
Token: SeDebugPrivilege	1364	2025-03-31_2cb05026447e400553acd808f13b0983_wannacry.exe
Token: SeDebugPrivilege	3872	svchost.exe
Token: SeBackupPrivilege	4404	vssvc.exe
Token: SeRestorePrivilege	4404	vssvc.exe
Token: SeAuditPrivilege	4404	vssvc.exe
Token: SeIncreaseQuotaPrivilege	2488	WMIC.exe
Token: SeSecurityPrivilege	2488	WMIC.exe
Token: SeTakeOwnershipPrivilege	2488	WMIC.exe
Token: SeLoadDriverPrivilege	2488	WMIC.exe
Token: SeSystemProfilePrivilege	2488	WMIC.exe
Token: SeSystemtimePrivilege	2488	WMIC.exe
Token: SeProfSingleProcessPrivilege	2488	WMIC.exe
Token: SeIncBasePriorityPrivilege	2488	WMIC.exe
Token: SeCreatePagefilePrivilege	2488	WMIC.exe
Token: SeBackupPrivilege	2488	WMIC.exe
Token: SeRestorePrivilege	2488	WMIC.exe
Token: SeShutdownPrivilege	2488	WMIC.exe
Token: SeDebugPrivilege	2488	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2488	WMIC.exe
Token: SeRemoteShutdownPrivilege	2488	WMIC.exe
Token: SeUndockPrivilege	2488	WMIC.exe
Token: SeManageVolumePrivilege	2488	WMIC.exe
Token: 33	2488	WMIC.exe
Token: 34	2488	WMIC.exe
Token: 35	2488	WMIC.exe
Token: 36	2488	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2488	WMIC.exe
Token: SeSecurityPrivilege	2488	WMIC.exe
Token: SeTakeOwnershipPrivilege	2488	WMIC.exe
Token: SeLoadDriverPrivilege	2488	WMIC.exe
Token: SeSystemProfilePrivilege	2488	WMIC.exe
Token: SeSystemtimePrivilege	2488	WMIC.exe
Token: SeProfSingleProcessPrivilege	2488	WMIC.exe
Token: SeIncBasePriorityPrivilege	2488	WMIC.exe
Token: SeCreatePagefilePrivilege	2488	WMIC.exe
Token: SeBackupPrivilege	2488	WMIC.exe
Token: SeRestorePrivilege	2488	WMIC.exe
Token: SeShutdownPrivilege	2488	WMIC.exe
Token: SeDebugPrivilege	2488	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2488	WMIC.exe
Token: SeRemoteShutdownPrivilege	2488	WMIC.exe
Token: SeUndockPrivilege	2488	WMIC.exe
Token: SeManageVolumePrivilege	2488	WMIC.exe
Token: 33	2488	WMIC.exe
Token: 34	2488	WMIC.exe
Token: 35	2488	WMIC.exe
Token: 36	2488	WMIC.exe
Token: SeBackupPrivilege	316	wbengine.exe
Token: SeRestorePrivilege	316	wbengine.exe
Token: SeSecurityPrivilege	316	wbengine.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1364 wrote to memory of 3872	1364	2025-03-31_2cb05026447e400553acd808f13b0983_wannacry.exe	96
PID 1364 wrote to memory of 3872	1364	2025-03-31_2cb05026447e400553acd808f13b0983_wannacry.exe	96
PID 3872 wrote to memory of 1760	3872	svchost.exe	98
PID 3872 wrote to memory of 1760	3872	svchost.exe	98
PID 1760 wrote to memory of 1996	1760	cmd.exe	100
PID 1760 wrote to memory of 1996	1760	cmd.exe	100
PID 1760 wrote to memory of 2488	1760	cmd.exe	103
PID 1760 wrote to memory of 2488	1760	cmd.exe	103
PID 3872 wrote to memory of 4224	3872	svchost.exe	104
PID 3872 wrote to memory of 4224	3872	svchost.exe	104
PID 4224 wrote to memory of 3140	4224	cmd.exe	106
PID 4224 wrote to memory of 3140	4224	cmd.exe	106
PID 4224 wrote to memory of 2392	4224	cmd.exe	107
PID 4224 wrote to memory of 2392	4224	cmd.exe	107
PID 3872 wrote to memory of 2140	3872	svchost.exe	108
PID 3872 wrote to memory of 2140	3872	svchost.exe	108
PID 2140 wrote to memory of 1532	2140	cmd.exe	110
PID 2140 wrote to memory of 1532	2140	cmd.exe	110
PID 3872 wrote to memory of 1432	3872	svchost.exe	117
PID 3872 wrote to memory of 1432	3872	svchost.exe	117

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\2025-03-31_2cb05026447e400553acd808f13b0983_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-31_2cb05026447e400553acd808f13b0983_wannacry.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1364
- 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:3872
- - 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:1760
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:1996
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2488
- - 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:4224
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:3140
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2392
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2140
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:1532
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\666.txt
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:1432

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4404

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:316

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:4016

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
- Checks SCSI registry key(s)
PID:1112

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

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

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

Defacement

T1491

Inhibit System Recovery

T1490

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\svchost.exe

Filesize
587KB

MD5
2cb05026447e400553acd808f13b0983

SHA1
3c5c56adc1390f1701357e5474636a10dcb3aca5

SHA256
caa7475c37e5c8dd3e3d64a38c57ec2848d32b4329431fcdbed228d1293cfc58

SHA512
1a765444b1d5e2571c5fed65c65ea8add1e14913118ded11450def198c8d62e80ae2d7ac571ed68d31ed7b3975ce8afd393c048d7930c0c09999c728daf1b0a8

Download Submit
C:\Users\Admin\Desktop\666.txt

Filesize
433B

MD5
6e11dd078af8a46f2cb39b09c9988f86

SHA1
e4d73f5b4992c499c93c4b439fea7df2adf79afa

SHA256
01b168c256bfbe76d986f97a2cfa2465f3ed5b8371146e83caa9a5145daf2bdf

SHA512
578add2b0380a151ed4db4d884ffa495576aa564387d36798ed9f3faf08e97c428330c42ab46dcd36fdeb9ecf334ec89e1684911aa9ce1b255daad38dd8f7235

Download Submit
memory/1364-0-0x00007FFBE0BE3000-0x00007FFBE0BE5000-memory.dmp

Filesize
8KB

Download
memory/1364-1-0x0000000000250000-0x00000000002EA000-memory.dmp

Filesize
616KB

Download
memory/3872-14-0x00007FFBE0BE0000-0x00007FFBE16A1000-memory.dmp

Filesize
10.8MB

Download
memory/3872-74-0x00007FFBE0BE0000-0x00007FFBE16A1000-memory.dmp

Filesize
10.8MB

Download