chaos | 0a71319ea75bf60852564255acedf8ebca241dbce159599228b656c64a5407dc

Analysis

max time kernel
102s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
26/03/2025, 14:31

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General

Target

2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
Size

349KB
MD5

17b62bf36407c8e313fb14203d61bdfa
SHA1

3bef15be182937139c874e22bbc4aa6a72755dcc
SHA256

0a71319ea75bf60852564255acedf8ebca241dbce159599228b656c64a5407dc
SHA512

d9e23d3efb23c1bda16b09d176a17f826689b5373518add6ecee2372a20566b87b2d39e314678fcb5626255f97c49b200678ee30603be0493c5b254ce894a9cc
SSDEEP

6144:Rr9SXlkEt9RGv5INQ0eLr9SXlkEt9RGv5INQ0e9:klkEHshINaulkEHshINa9

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/704-1-0x0000000000750000-0x000000000077C000-memory.dmp	family_chaos
behavioral2/files/0x000700000001e123-6.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
1104	bcdedit.exe
4348	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
4376	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-1-5-21-869607583-2483572573-2297019986-1000\Control Panel\International\Geo\Nation	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
Key value queried	\REGISTRY\USER\S-1-5-21-869607583-2483572573-2297019986-1000\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
1736	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\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\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\System Tools\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Saved Games\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	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\OneDrive\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\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\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-869607583-2483572573-2297019986-1000\desktop.ini	svchost.exe
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\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\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\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\Start Menu\Programs\Maintenance\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\Videos\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\Admin\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\Administrative Tools\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links\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\Internet Explorer\Quick Launch\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-1-5-21-869607583-2483572573-2297019986-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\xnzw7bcyj.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
2860	vssadmin.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-869607583-2483572573-2297019986-1000_Classes\Local Settings	svchost.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
4996	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1736	svchost.exe

Suspicious behavior: EnumeratesProcesses 49 IoCs

pid	Process
704	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
704	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
704	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
704	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
704	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
704	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
704	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
704	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
704	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
704	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
704	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
704	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
704	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
704	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
704	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
704	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
704	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
704	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
704	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
704	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
704	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
704	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
704	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
1736	svchost.exe
1736	svchost.exe
1736	svchost.exe
1736	svchost.exe
1736	svchost.exe
1736	svchost.exe
1736	svchost.exe
1736	svchost.exe
1736	svchost.exe
1736	svchost.exe
1736	svchost.exe
1736	svchost.exe
1736	svchost.exe
1736	svchost.exe
1736	svchost.exe
1736	svchost.exe
1736	svchost.exe
1736	svchost.exe
1736	svchost.exe
1736	svchost.exe
1736	svchost.exe
1736	svchost.exe
1736	svchost.exe
1736	svchost.exe
1736	svchost.exe
1736	svchost.exe

Suspicious use of AdjustPrivilegeToken 50 IoCs

description	pid	Process
Token: SeDebugPrivilege	704	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
Token: SeDebugPrivilege	1736	svchost.exe
Token: SeBackupPrivilege	1596	vssvc.exe
Token: SeRestorePrivilege	1596	vssvc.exe
Token: SeAuditPrivilege	1596	vssvc.exe
Token: SeIncreaseQuotaPrivilege	3264	WMIC.exe
Token: SeSecurityPrivilege	3264	WMIC.exe
Token: SeTakeOwnershipPrivilege	3264	WMIC.exe
Token: SeLoadDriverPrivilege	3264	WMIC.exe
Token: SeSystemProfilePrivilege	3264	WMIC.exe
Token: SeSystemtimePrivilege	3264	WMIC.exe
Token: SeProfSingleProcessPrivilege	3264	WMIC.exe
Token: SeIncBasePriorityPrivilege	3264	WMIC.exe
Token: SeCreatePagefilePrivilege	3264	WMIC.exe
Token: SeBackupPrivilege	3264	WMIC.exe
Token: SeRestorePrivilege	3264	WMIC.exe
Token: SeShutdownPrivilege	3264	WMIC.exe
Token: SeDebugPrivilege	3264	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3264	WMIC.exe
Token: SeRemoteShutdownPrivilege	3264	WMIC.exe
Token: SeUndockPrivilege	3264	WMIC.exe
Token: SeManageVolumePrivilege	3264	WMIC.exe
Token: 33	3264	WMIC.exe
Token: 34	3264	WMIC.exe
Token: 35	3264	WMIC.exe
Token: 36	3264	WMIC.exe
Token: SeIncreaseQuotaPrivilege	3264	WMIC.exe
Token: SeSecurityPrivilege	3264	WMIC.exe
Token: SeTakeOwnershipPrivilege	3264	WMIC.exe
Token: SeLoadDriverPrivilege	3264	WMIC.exe
Token: SeSystemProfilePrivilege	3264	WMIC.exe
Token: SeSystemtimePrivilege	3264	WMIC.exe
Token: SeProfSingleProcessPrivilege	3264	WMIC.exe
Token: SeIncBasePriorityPrivilege	3264	WMIC.exe
Token: SeCreatePagefilePrivilege	3264	WMIC.exe
Token: SeBackupPrivilege	3264	WMIC.exe
Token: SeRestorePrivilege	3264	WMIC.exe
Token: SeShutdownPrivilege	3264	WMIC.exe
Token: SeDebugPrivilege	3264	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3264	WMIC.exe
Token: SeRemoteShutdownPrivilege	3264	WMIC.exe
Token: SeUndockPrivilege	3264	WMIC.exe
Token: SeManageVolumePrivilege	3264	WMIC.exe
Token: 33	3264	WMIC.exe
Token: 34	3264	WMIC.exe
Token: 35	3264	WMIC.exe
Token: 36	3264	WMIC.exe
Token: SeBackupPrivilege	4560	wbengine.exe
Token: SeRestorePrivilege	4560	wbengine.exe
Token: SeSecurityPrivilege	4560	wbengine.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 704 wrote to memory of 1736	704	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe	90
PID 704 wrote to memory of 1736	704	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe	90
PID 1736 wrote to memory of 2228	1736	svchost.exe	96
PID 1736 wrote to memory of 2228	1736	svchost.exe	96
PID 2228 wrote to memory of 2860	2228	cmd.exe	98
PID 2228 wrote to memory of 2860	2228	cmd.exe	98
PID 2228 wrote to memory of 3264	2228	cmd.exe	102
PID 2228 wrote to memory of 3264	2228	cmd.exe	102
PID 1736 wrote to memory of 4016	1736	svchost.exe	103
PID 1736 wrote to memory of 4016	1736	svchost.exe	103
PID 4016 wrote to memory of 1104	4016	cmd.exe	105
PID 4016 wrote to memory of 1104	4016	cmd.exe	105
PID 4016 wrote to memory of 4348	4016	cmd.exe	106
PID 4016 wrote to memory of 4348	4016	cmd.exe	106
PID 1736 wrote to memory of 1264	1736	svchost.exe	107
PID 1736 wrote to memory of 1264	1736	svchost.exe	107
PID 1264 wrote to memory of 4376	1264	cmd.exe	109
PID 1264 wrote to memory of 4376	1264	cmd.exe	109
PID 1736 wrote to memory of 4996	1736	svchost.exe	114
PID 1736 wrote to memory of 4996	1736	svchost.exe	114

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\2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:704
- 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:1736
- - 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:2228
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2860
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:3264
- - 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:4016
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1104
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:4348
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1264
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:4376
- - 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:4996

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1596

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4560

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:4868

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
- Checks SCSI registry key(s)
PID:228

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

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Downloads

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

Filesize
349KB

MD5
17b62bf36407c8e313fb14203d61bdfa

SHA1
3bef15be182937139c874e22bbc4aa6a72755dcc

SHA256
0a71319ea75bf60852564255acedf8ebca241dbce159599228b656c64a5407dc

SHA512
d9e23d3efb23c1bda16b09d176a17f826689b5373518add6ecee2372a20566b87b2d39e314678fcb5626255f97c49b200678ee30603be0493c5b254ce894a9cc

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

Filesize
26B

MD5
2f5f91d0ed875c4094929f40d14cc78b

SHA1
663c0f8f198b1d74eba7c0d85fde32721697f468

SHA256
d1d072d1de5c97fbd0a59d7acaf188ba8d444e0c5cd0045ecebe658141684823

SHA512
6871fb46e7e1c6b03b75f9d5305f31f11d3f27c39319af410b6b77e6ebe6b30e09e98a962929c045e113cdde81acde3e7a5a8c95c30a84bb879c87999777ff1f

Download Submit
memory/704-0-0x00007FFEE5363000-0x00007FFEE5365000-memory.dmp

Filesize
8KB

Download
memory/704-1-0x0000000000750000-0x000000000077C000-memory.dmp

Filesize
176KB

Download
memory/1736-14-0x00007FFEE5360000-0x00007FFEE5E21000-memory.dmp

Filesize
10.8MB

Download
memory/1736-70-0x00007FFEE5360000-0x00007FFEE5E21000-memory.dmp

Filesize
10.8MB

Download