chaos | d487a3562cfb46a5992deac8a154f6b84b4b046fb98252e51b9c75310a8e4610

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
03/04/2024, 22:28

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General

Target

2024-04-03_35cd5196973ea268366e117948e3234e_wannacry.exe
Size

138KB
MD5

35cd5196973ea268366e117948e3234e
SHA1

d3b0408dd73972b1228dbc6eedae887020069205
SHA256

d487a3562cfb46a5992deac8a154f6b84b4b046fb98252e51b9c75310a8e4610
SHA512

250080b16b12a3b36ea27a621ca1a9664aff0cbbd4e7c286ed030edad2a568d338c1f40817e9643b896ef23e5992372ee6866a972fdccac14005d02a1bff9f8e
SSDEEP

3072:Too9Lr9+OjsHL8Czl4rPT5E6JHztz3M1j/20:9r9+Ow8frT66tFYj/2

Score

10^/10

chaos evasion 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/4648-0-0x0000000000160000-0x0000000000188000-memory.dmp	family_chaos
behavioral2/files/0x000300000002276c-6.dat	family_chaos

Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1070.004

Inhibit System Recovery
T1490

Detects command variations typically used by ransomware 2 IoCs

resource	yara_rule
behavioral2/memory/4648-0-0x0000000000160000-0x0000000000188000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral2/files/0x000300000002276c-6.dat	INDICATOR_SUSPICIOUS_GENRansomware

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
4652	bcdedit.exe
3036	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
2732	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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-04-03_35cd5196973ea268366e117948e3234e_wannacry.exe
Key value queried	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\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\LEIA-ME txt	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4516	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\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\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\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\Public\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\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\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\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\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\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\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\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\Pictures\Saved Pictures\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\System Tools\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\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\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\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-983155329-280873152-1838004294-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\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\User Pinned\TaskBar\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\CdRom&Ven_DADY&Prod_DADY_DVD-ROM\4&215468a5&0&010000\FriendlyName	vds.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_DADY&PROD_HARDDISK\4&215468A5&0&000000	vds.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName	vds.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_DADY&PROD_DADY_DVD-ROM\4&215468A5&0&010000	vds.exe

Interacts with shadow copies 2 TTPs 1 IoCs

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

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

pid	Process
564	vssadmin.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000_Classes\Local Settings	svchost.exe
Key created	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000_Classes\Local Settings	OpenWith.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4516	svchost.exe

Suspicious behavior: EnumeratesProcesses 49 IoCs

pid	Process
4648	2024-04-03_35cd5196973ea268366e117948e3234e_wannacry.exe
4648	2024-04-03_35cd5196973ea268366e117948e3234e_wannacry.exe
4648	2024-04-03_35cd5196973ea268366e117948e3234e_wannacry.exe
4648	2024-04-03_35cd5196973ea268366e117948e3234e_wannacry.exe
4648	2024-04-03_35cd5196973ea268366e117948e3234e_wannacry.exe
4648	2024-04-03_35cd5196973ea268366e117948e3234e_wannacry.exe
4648	2024-04-03_35cd5196973ea268366e117948e3234e_wannacry.exe
4648	2024-04-03_35cd5196973ea268366e117948e3234e_wannacry.exe
4648	2024-04-03_35cd5196973ea268366e117948e3234e_wannacry.exe
4648	2024-04-03_35cd5196973ea268366e117948e3234e_wannacry.exe
4648	2024-04-03_35cd5196973ea268366e117948e3234e_wannacry.exe
4648	2024-04-03_35cd5196973ea268366e117948e3234e_wannacry.exe
4648	2024-04-03_35cd5196973ea268366e117948e3234e_wannacry.exe
4648	2024-04-03_35cd5196973ea268366e117948e3234e_wannacry.exe
4648	2024-04-03_35cd5196973ea268366e117948e3234e_wannacry.exe
4648	2024-04-03_35cd5196973ea268366e117948e3234e_wannacry.exe
4648	2024-04-03_35cd5196973ea268366e117948e3234e_wannacry.exe
4648	2024-04-03_35cd5196973ea268366e117948e3234e_wannacry.exe
4648	2024-04-03_35cd5196973ea268366e117948e3234e_wannacry.exe
4648	2024-04-03_35cd5196973ea268366e117948e3234e_wannacry.exe
4648	2024-04-03_35cd5196973ea268366e117948e3234e_wannacry.exe
4648	2024-04-03_35cd5196973ea268366e117948e3234e_wannacry.exe
4648	2024-04-03_35cd5196973ea268366e117948e3234e_wannacry.exe
4648	2024-04-03_35cd5196973ea268366e117948e3234e_wannacry.exe
4648	2024-04-03_35cd5196973ea268366e117948e3234e_wannacry.exe
4516	svchost.exe
4516	svchost.exe
4516	svchost.exe
4516	svchost.exe
4516	svchost.exe
4516	svchost.exe
4516	svchost.exe
4516	svchost.exe
4516	svchost.exe
4516	svchost.exe
4516	svchost.exe
4516	svchost.exe
4516	svchost.exe
4516	svchost.exe
4516	svchost.exe
4516	svchost.exe
4516	svchost.exe
4516	svchost.exe
4516	svchost.exe
4516	svchost.exe
4516	svchost.exe
4516	svchost.exe
4516	svchost.exe
4516	svchost.exe

Suspicious use of AdjustPrivilegeToken 50 IoCs

description	pid	Process
Token: SeDebugPrivilege	4648	2024-04-03_35cd5196973ea268366e117948e3234e_wannacry.exe
Token: SeDebugPrivilege	4516	svchost.exe
Token: SeBackupPrivilege	1352	vssvc.exe
Token: SeRestorePrivilege	1352	vssvc.exe
Token: SeAuditPrivilege	1352	vssvc.exe
Token: SeIncreaseQuotaPrivilege	4364	WMIC.exe
Token: SeSecurityPrivilege	4364	WMIC.exe
Token: SeTakeOwnershipPrivilege	4364	WMIC.exe
Token: SeLoadDriverPrivilege	4364	WMIC.exe
Token: SeSystemProfilePrivilege	4364	WMIC.exe
Token: SeSystemtimePrivilege	4364	WMIC.exe
Token: SeProfSingleProcessPrivilege	4364	WMIC.exe
Token: SeIncBasePriorityPrivilege	4364	WMIC.exe
Token: SeCreatePagefilePrivilege	4364	WMIC.exe
Token: SeBackupPrivilege	4364	WMIC.exe
Token: SeRestorePrivilege	4364	WMIC.exe
Token: SeShutdownPrivilege	4364	WMIC.exe
Token: SeDebugPrivilege	4364	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4364	WMIC.exe
Token: SeRemoteShutdownPrivilege	4364	WMIC.exe
Token: SeUndockPrivilege	4364	WMIC.exe
Token: SeManageVolumePrivilege	4364	WMIC.exe
Token: 33	4364	WMIC.exe
Token: 34	4364	WMIC.exe
Token: 35	4364	WMIC.exe
Token: 36	4364	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4364	WMIC.exe
Token: SeSecurityPrivilege	4364	WMIC.exe
Token: SeTakeOwnershipPrivilege	4364	WMIC.exe
Token: SeLoadDriverPrivilege	4364	WMIC.exe
Token: SeSystemProfilePrivilege	4364	WMIC.exe
Token: SeSystemtimePrivilege	4364	WMIC.exe
Token: SeProfSingleProcessPrivilege	4364	WMIC.exe
Token: SeIncBasePriorityPrivilege	4364	WMIC.exe
Token: SeCreatePagefilePrivilege	4364	WMIC.exe
Token: SeBackupPrivilege	4364	WMIC.exe
Token: SeRestorePrivilege	4364	WMIC.exe
Token: SeShutdownPrivilege	4364	WMIC.exe
Token: SeDebugPrivilege	4364	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4364	WMIC.exe
Token: SeRemoteShutdownPrivilege	4364	WMIC.exe
Token: SeUndockPrivilege	4364	WMIC.exe
Token: SeManageVolumePrivilege	4364	WMIC.exe
Token: 33	4364	WMIC.exe
Token: 34	4364	WMIC.exe
Token: 35	4364	WMIC.exe
Token: 36	4364	WMIC.exe
Token: SeBackupPrivilege	2304	wbengine.exe
Token: SeRestorePrivilege	2304	wbengine.exe
Token: SeSecurityPrivilege	2304	wbengine.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2652	OpenWith.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 4648 wrote to memory of 4516	4648	2024-04-03_35cd5196973ea268366e117948e3234e_wannacry.exe	91
PID 4648 wrote to memory of 4516	4648	2024-04-03_35cd5196973ea268366e117948e3234e_wannacry.exe	91
PID 4516 wrote to memory of 3212	4516	svchost.exe	96
PID 4516 wrote to memory of 3212	4516	svchost.exe	96
PID 3212 wrote to memory of 564	3212	cmd.exe	100
PID 3212 wrote to memory of 564	3212	cmd.exe	100
PID 3212 wrote to memory of 4364	3212	cmd.exe	103
PID 3212 wrote to memory of 4364	3212	cmd.exe	103
PID 4516 wrote to memory of 4100	4516	svchost.exe	104
PID 4516 wrote to memory of 4100	4516	svchost.exe	104
PID 4100 wrote to memory of 4652	4100	cmd.exe	106
PID 4100 wrote to memory of 4652	4100	cmd.exe	106
PID 4100 wrote to memory of 3036	4100	cmd.exe	107
PID 4100 wrote to memory of 3036	4100	cmd.exe	107
PID 4516 wrote to memory of 1924	4516	svchost.exe	108
PID 4516 wrote to memory of 1924	4516	svchost.exe	108

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\2024-04-03_35cd5196973ea268366e117948e3234e_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-03_35cd5196973ea268366e117948e3234e_wannacry.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4648
- 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:4516
- - 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:3212
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:564
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:4364
- - 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:4100
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:4652
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:3036
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    PID:1924
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:2732

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1352

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2304

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:3448

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
- Checks SCSI registry key(s)
PID:4696

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:2652

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Privilege Escalation

Defense Evasion

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

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

Filesize
138KB

MD5
35cd5196973ea268366e117948e3234e

SHA1
d3b0408dd73972b1228dbc6eedae887020069205

SHA256
d487a3562cfb46a5992deac8a154f6b84b4b046fb98252e51b9c75310a8e4610

SHA512
250080b16b12a3b36ea27a621ca1a9664aff0cbbd4e7c286ed030edad2a568d338c1f40817e9643b896ef23e5992372ee6866a972fdccac14005d02a1bff9f8e

Download Submit
C:\Users\Admin\Documents\LEIA-ME txt

Filesize
555B

MD5
88e1775159b477cd84de858370a72243

SHA1
4ba54e4aff5187c036867b2c96c8ab7e75a7955c

SHA256
403de26691352cea37b29d2babc62f90c8995dff9a6a367be247ca388a8d1349

SHA512
76f9b5001f13488e66fee067140d68eba2082614f41e910d43c1f4b51c793db34b556aab3798714a18ad60e3c958da56d1414d8b74f799f0d72d09a89d03a521

Download Submit
memory/4516-14-0x00007FF943FE0000-0x00007FF944AA1000-memory.dmp

Filesize
10.8MB

Download
memory/4516-452-0x00007FF943FE0000-0x00007FF944AA1000-memory.dmp

Filesize
10.8MB

Download
memory/4648-0-0x0000000000160000-0x0000000000188000-memory.dmp

Filesize
160KB

Download
memory/4648-1-0x00007FF943FE0000-0x00007FF944AA1000-memory.dmp

Filesize
10.8MB

Download
memory/4648-15-0x00007FF943FE0000-0x00007FF944AA1000-memory.dmp

Filesize
10.8MB

Download