chaos | b2f188b9e27d4a877e506457667a97c39f6805a597fceb1dc729e6a3f2cf6639

Analysis

max time kernel
93s
max time network
135s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
27-11-2024 09:27

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General

Target

2024-11-27_3bcb06bfd037d20132b11c49f21940e5_wannacry.exe
Size

103KB
MD5

3bcb06bfd037d20132b11c49f21940e5
SHA1

90b36f6a8da347ec2629675cf07698329d286570
SHA256

b2f188b9e27d4a877e506457667a97c39f6805a597fceb1dc729e6a3f2cf6639
SHA512

ad540e1f66dc86a8cb2906ec042f266c39e7264935a42a11da08a17e765e1e93b7867e1b7339e8508bfd6ce41468fad65598c149bf19f7de20163e93c71ad277
SSDEEP

3072:ZoXTtyjXr9H7490Ra2icHUkPuo0vDfiO9qWQ/KTZgKbt8:d7r9b44a2BUZoKf/Ngeu+t

Score

10^/10

chaos wannacry defense_evasion evasion execution impact ransomware spyware stealer worm

Malware Config

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 2 IoCs

resource	yara_rule
behavioral2/memory/556-1-0x0000000000660000-0x0000000000680000-memory.dmp	family_chaos
behavioral2/files/0x000c000000023ba9-6.dat	family_chaos

Chaos family
chaos
Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Wannacry family
wannacry
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
3052	bcdedit.exe
1020	bcdedit.exe

Renames multiple (183) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

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
2772	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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	2024-11-27_3bcb06bfd037d20132b11c49f21940e5_wannacry.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\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_this!.exe	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2352	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\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\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\AppData\Roaming\Microsoft\Windows\Libraries\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\Accessories\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-1-5-21-3756129449-3121373848-4276368241-1000\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\Contacts\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\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\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\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\AccountPictures\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\Public\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\OneDrive\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links\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\Recent\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\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\Videos\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\Public\Documents\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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\i5y4b5138.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
2084	vssadmin.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2352	svchost.exe

Suspicious behavior: EnumeratesProcesses 49 IoCs

pid	Process
556	2024-11-27_3bcb06bfd037d20132b11c49f21940e5_wannacry.exe
556	2024-11-27_3bcb06bfd037d20132b11c49f21940e5_wannacry.exe
556	2024-11-27_3bcb06bfd037d20132b11c49f21940e5_wannacry.exe
556	2024-11-27_3bcb06bfd037d20132b11c49f21940e5_wannacry.exe
556	2024-11-27_3bcb06bfd037d20132b11c49f21940e5_wannacry.exe
556	2024-11-27_3bcb06bfd037d20132b11c49f21940e5_wannacry.exe
556	2024-11-27_3bcb06bfd037d20132b11c49f21940e5_wannacry.exe
556	2024-11-27_3bcb06bfd037d20132b11c49f21940e5_wannacry.exe
556	2024-11-27_3bcb06bfd037d20132b11c49f21940e5_wannacry.exe
556	2024-11-27_3bcb06bfd037d20132b11c49f21940e5_wannacry.exe
556	2024-11-27_3bcb06bfd037d20132b11c49f21940e5_wannacry.exe
556	2024-11-27_3bcb06bfd037d20132b11c49f21940e5_wannacry.exe
556	2024-11-27_3bcb06bfd037d20132b11c49f21940e5_wannacry.exe
556	2024-11-27_3bcb06bfd037d20132b11c49f21940e5_wannacry.exe
556	2024-11-27_3bcb06bfd037d20132b11c49f21940e5_wannacry.exe
556	2024-11-27_3bcb06bfd037d20132b11c49f21940e5_wannacry.exe
556	2024-11-27_3bcb06bfd037d20132b11c49f21940e5_wannacry.exe
556	2024-11-27_3bcb06bfd037d20132b11c49f21940e5_wannacry.exe
556	2024-11-27_3bcb06bfd037d20132b11c49f21940e5_wannacry.exe
556	2024-11-27_3bcb06bfd037d20132b11c49f21940e5_wannacry.exe
556	2024-11-27_3bcb06bfd037d20132b11c49f21940e5_wannacry.exe
556	2024-11-27_3bcb06bfd037d20132b11c49f21940e5_wannacry.exe
556	2024-11-27_3bcb06bfd037d20132b11c49f21940e5_wannacry.exe
556	2024-11-27_3bcb06bfd037d20132b11c49f21940e5_wannacry.exe
556	2024-11-27_3bcb06bfd037d20132b11c49f21940e5_wannacry.exe
2352	svchost.exe
2352	svchost.exe
2352	svchost.exe
2352	svchost.exe
2352	svchost.exe
2352	svchost.exe
2352	svchost.exe
2352	svchost.exe
2352	svchost.exe
2352	svchost.exe
2352	svchost.exe
2352	svchost.exe
2352	svchost.exe
2352	svchost.exe
2352	svchost.exe
2352	svchost.exe
2352	svchost.exe
2352	svchost.exe
2352	svchost.exe
2352	svchost.exe
2352	svchost.exe
2352	svchost.exe
2352	svchost.exe
2352	svchost.exe

Suspicious use of AdjustPrivilegeToken 50 IoCs

description	pid	Process
Token: SeDebugPrivilege	556	2024-11-27_3bcb06bfd037d20132b11c49f21940e5_wannacry.exe
Token: SeDebugPrivilege	2352	svchost.exe
Token: SeBackupPrivilege	4040	vssvc.exe
Token: SeRestorePrivilege	4040	vssvc.exe
Token: SeAuditPrivilege	4040	vssvc.exe
Token: SeIncreaseQuotaPrivilege	2348	WMIC.exe
Token: SeSecurityPrivilege	2348	WMIC.exe
Token: SeTakeOwnershipPrivilege	2348	WMIC.exe
Token: SeLoadDriverPrivilege	2348	WMIC.exe
Token: SeSystemProfilePrivilege	2348	WMIC.exe
Token: SeSystemtimePrivilege	2348	WMIC.exe
Token: SeProfSingleProcessPrivilege	2348	WMIC.exe
Token: SeIncBasePriorityPrivilege	2348	WMIC.exe
Token: SeCreatePagefilePrivilege	2348	WMIC.exe
Token: SeBackupPrivilege	2348	WMIC.exe
Token: SeRestorePrivilege	2348	WMIC.exe
Token: SeShutdownPrivilege	2348	WMIC.exe
Token: SeDebugPrivilege	2348	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2348	WMIC.exe
Token: SeRemoteShutdownPrivilege	2348	WMIC.exe
Token: SeUndockPrivilege	2348	WMIC.exe
Token: SeManageVolumePrivilege	2348	WMIC.exe
Token: 33	2348	WMIC.exe
Token: 34	2348	WMIC.exe
Token: 35	2348	WMIC.exe
Token: 36	2348	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2348	WMIC.exe
Token: SeSecurityPrivilege	2348	WMIC.exe
Token: SeTakeOwnershipPrivilege	2348	WMIC.exe
Token: SeLoadDriverPrivilege	2348	WMIC.exe
Token: SeSystemProfilePrivilege	2348	WMIC.exe
Token: SeSystemtimePrivilege	2348	WMIC.exe
Token: SeProfSingleProcessPrivilege	2348	WMIC.exe
Token: SeIncBasePriorityPrivilege	2348	WMIC.exe
Token: SeCreatePagefilePrivilege	2348	WMIC.exe
Token: SeBackupPrivilege	2348	WMIC.exe
Token: SeRestorePrivilege	2348	WMIC.exe
Token: SeShutdownPrivilege	2348	WMIC.exe
Token: SeDebugPrivilege	2348	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2348	WMIC.exe
Token: SeRemoteShutdownPrivilege	2348	WMIC.exe
Token: SeUndockPrivilege	2348	WMIC.exe
Token: SeManageVolumePrivilege	2348	WMIC.exe
Token: 33	2348	WMIC.exe
Token: 34	2348	WMIC.exe
Token: 35	2348	WMIC.exe
Token: 36	2348	WMIC.exe
Token: SeBackupPrivilege	3148	wbengine.exe
Token: SeRestorePrivilege	3148	wbengine.exe
Token: SeSecurityPrivilege	3148	wbengine.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 556 wrote to memory of 2352	556	2024-11-27_3bcb06bfd037d20132b11c49f21940e5_wannacry.exe	82
PID 556 wrote to memory of 2352	556	2024-11-27_3bcb06bfd037d20132b11c49f21940e5_wannacry.exe	82
PID 2352 wrote to memory of 1108	2352	svchost.exe	88
PID 2352 wrote to memory of 1108	2352	svchost.exe	88
PID 1108 wrote to memory of 2084	1108	cmd.exe	90
PID 1108 wrote to memory of 2084	1108	cmd.exe	90
PID 1108 wrote to memory of 2348	1108	cmd.exe	93
PID 1108 wrote to memory of 2348	1108	cmd.exe	93
PID 2352 wrote to memory of 2820	2352	svchost.exe	94
PID 2352 wrote to memory of 2820	2352	svchost.exe	94
PID 2820 wrote to memory of 3052	2820	cmd.exe	96
PID 2820 wrote to memory of 3052	2820	cmd.exe	96
PID 2820 wrote to memory of 1020	2820	cmd.exe	97
PID 2820 wrote to memory of 1020	2820	cmd.exe	97
PID 2352 wrote to memory of 4360	2352	svchost.exe	98
PID 2352 wrote to memory of 4360	2352	svchost.exe	98
PID 4360 wrote to memory of 2772	4360	cmd.exe	100
PID 4360 wrote to memory of 2772	4360	cmd.exe	100

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\2024-11-27_3bcb06bfd037d20132b11c49f21940e5_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-27_3bcb06bfd037d20132b11c49f21940e5_wannacry.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:556
- 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
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2352
- - 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:1108
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2084
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2348
- - 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:2820
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:3052
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1020
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4360
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:2772

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4040

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3148

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:4860

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
- Checks SCSI registry key(s)
PID:4724

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
103KB

MD5
3bcb06bfd037d20132b11c49f21940e5

SHA1
90b36f6a8da347ec2629675cf07698329d286570

SHA256
b2f188b9e27d4a877e506457667a97c39f6805a597fceb1dc729e6a3f2cf6639

SHA512
ad540e1f66dc86a8cb2906ec042f266c39e7264935a42a11da08a17e765e1e93b7867e1b7339e8508bfd6ce41468fad65598c149bf19f7de20163e93c71ad277

Download Submit
C:\Users\Admin\Documents\¡read_this!.exe

Filesize
967B

MD5
d6a500f15c88649bfc51113f7bf656e9

SHA1
8d5ac46da895f1250b3bf784a772b0d8b042e50e

SHA256
33afcb9c16172963cad44a6d45a8604bfddbeb669d2811a5be14f68c87db237e

SHA512
bb26e0fba4ec1388b36991ff3f0acce41658ccc6c717c74bd6430126ce4ee191afe08f677357bde1815a7e79143640dabc6ca12949967f9051a3eb4d539f96f5

Download Submit
memory/556-0-0x00007FFCD91D3000-0x00007FFCD91D5000-memory.dmp

Filesize
8KB

Download
memory/556-1-0x0000000000660000-0x0000000000680000-memory.dmp

Filesize
128KB

Download
memory/2352-14-0x00007FFCD91D0000-0x00007FFCD9C91000-memory.dmp

Filesize
10.8MB

Download
memory/2352-440-0x00007FFCD91D0000-0x00007FFCD9C91000-memory.dmp

Filesize
10.8MB

Download