chaos | fd7740837a82aed3fcce2869488e128bd7524fcf78f1f38bb604aea6e39d3469

Analysis

max time kernel
92s
max time network
115s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
15-04-2024 20:37

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General

Target

2024-04-15_463db363dcf29c2d1d498952586d815a_wannacry.exe
Size

229KB
MD5

463db363dcf29c2d1d498952586d815a
SHA1

19145465538f02d6c4ab954bf45157badc18bf60
SHA256

fd7740837a82aed3fcce2869488e128bd7524fcf78f1f38bb604aea6e39d3469
SHA512

2e6618f4515f14916ad5b83b71d5c00c0e3dea7656cfbd1d598cfcd6f3cc418a679b5bdb1efdc4882e0ebc9b0c1f4a8dc4431706ebb8476b1d8f236d4b7c5985
SSDEEP

3072:13kLQj6Lr9SWWZt+em3xr8E1Q8dm0NYuaacYee2bE6//hXngpw4MmFQGvDr3S:cVr9SRVr0Cu+Fp8Hvn3

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/2888-0-0x00000000005C0000-0x0000000000600000-memory.dmp	family_chaos
behavioral2/files/0x000700000002342e-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/2888-0-0x00000000005C0000-0x0000000000600000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral2/files/0x000700000002342e-6.dat	INDICATOR_SUSPICIOUS_GENRansomware

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
1792	bcdedit.exe
2724	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
5000	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-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	2024-04-15_463db363dcf29c2d1d498952586d815a_wannacry.exe
Key value queried	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\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_ME.txt	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
848	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\AppData\Roaming\Microsoft\Windows\AccountPictures\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\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Saved Games\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\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\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\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\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\SendTo\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\System Tools\Desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-259785868-298165991-4178590326-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\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\Libraries\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\Favorites\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\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\Public\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\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\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative 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-1-5-21-259785868-298165991-4178590326-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\7kpbrf6fc.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_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_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 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
5048	vssadmin.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000_Classes\Local Settings	svchost.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1596	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
848	svchost.exe

Suspicious behavior: EnumeratesProcesses 46 IoCs

pid	Process
2888	2024-04-15_463db363dcf29c2d1d498952586d815a_wannacry.exe
2888	2024-04-15_463db363dcf29c2d1d498952586d815a_wannacry.exe
2888	2024-04-15_463db363dcf29c2d1d498952586d815a_wannacry.exe
2888	2024-04-15_463db363dcf29c2d1d498952586d815a_wannacry.exe
2888	2024-04-15_463db363dcf29c2d1d498952586d815a_wannacry.exe
2888	2024-04-15_463db363dcf29c2d1d498952586d815a_wannacry.exe
2888	2024-04-15_463db363dcf29c2d1d498952586d815a_wannacry.exe
2888	2024-04-15_463db363dcf29c2d1d498952586d815a_wannacry.exe
2888	2024-04-15_463db363dcf29c2d1d498952586d815a_wannacry.exe
2888	2024-04-15_463db363dcf29c2d1d498952586d815a_wannacry.exe
2888	2024-04-15_463db363dcf29c2d1d498952586d815a_wannacry.exe
2888	2024-04-15_463db363dcf29c2d1d498952586d815a_wannacry.exe
2888	2024-04-15_463db363dcf29c2d1d498952586d815a_wannacry.exe
2888	2024-04-15_463db363dcf29c2d1d498952586d815a_wannacry.exe
2888	2024-04-15_463db363dcf29c2d1d498952586d815a_wannacry.exe
2888	2024-04-15_463db363dcf29c2d1d498952586d815a_wannacry.exe
2888	2024-04-15_463db363dcf29c2d1d498952586d815a_wannacry.exe
2888	2024-04-15_463db363dcf29c2d1d498952586d815a_wannacry.exe
2888	2024-04-15_463db363dcf29c2d1d498952586d815a_wannacry.exe
2888	2024-04-15_463db363dcf29c2d1d498952586d815a_wannacry.exe
2888	2024-04-15_463db363dcf29c2d1d498952586d815a_wannacry.exe
2888	2024-04-15_463db363dcf29c2d1d498952586d815a_wannacry.exe
848	svchost.exe
848	svchost.exe
848	svchost.exe
848	svchost.exe
848	svchost.exe
848	svchost.exe
848	svchost.exe
848	svchost.exe
848	svchost.exe
848	svchost.exe
848	svchost.exe
848	svchost.exe
848	svchost.exe
848	svchost.exe
848	svchost.exe
848	svchost.exe
848	svchost.exe
848	svchost.exe
848	svchost.exe
848	svchost.exe
848	svchost.exe
848	svchost.exe
848	svchost.exe
848	svchost.exe

Suspicious use of AdjustPrivilegeToken 50 IoCs

description	pid	Process
Token: SeDebugPrivilege	2888	2024-04-15_463db363dcf29c2d1d498952586d815a_wannacry.exe
Token: SeDebugPrivilege	848	svchost.exe
Token: SeBackupPrivilege	1856	vssvc.exe
Token: SeRestorePrivilege	1856	vssvc.exe
Token: SeAuditPrivilege	1856	vssvc.exe
Token: SeIncreaseQuotaPrivilege	4936	WMIC.exe
Token: SeSecurityPrivilege	4936	WMIC.exe
Token: SeTakeOwnershipPrivilege	4936	WMIC.exe
Token: SeLoadDriverPrivilege	4936	WMIC.exe
Token: SeSystemProfilePrivilege	4936	WMIC.exe
Token: SeSystemtimePrivilege	4936	WMIC.exe
Token: SeProfSingleProcessPrivilege	4936	WMIC.exe
Token: SeIncBasePriorityPrivilege	4936	WMIC.exe
Token: SeCreatePagefilePrivilege	4936	WMIC.exe
Token: SeBackupPrivilege	4936	WMIC.exe
Token: SeRestorePrivilege	4936	WMIC.exe
Token: SeShutdownPrivilege	4936	WMIC.exe
Token: SeDebugPrivilege	4936	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4936	WMIC.exe
Token: SeRemoteShutdownPrivilege	4936	WMIC.exe
Token: SeUndockPrivilege	4936	WMIC.exe
Token: SeManageVolumePrivilege	4936	WMIC.exe
Token: 33	4936	WMIC.exe
Token: 34	4936	WMIC.exe
Token: 35	4936	WMIC.exe
Token: 36	4936	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4936	WMIC.exe
Token: SeSecurityPrivilege	4936	WMIC.exe
Token: SeTakeOwnershipPrivilege	4936	WMIC.exe
Token: SeLoadDriverPrivilege	4936	WMIC.exe
Token: SeSystemProfilePrivilege	4936	WMIC.exe
Token: SeSystemtimePrivilege	4936	WMIC.exe
Token: SeProfSingleProcessPrivilege	4936	WMIC.exe
Token: SeIncBasePriorityPrivilege	4936	WMIC.exe
Token: SeCreatePagefilePrivilege	4936	WMIC.exe
Token: SeBackupPrivilege	4936	WMIC.exe
Token: SeRestorePrivilege	4936	WMIC.exe
Token: SeShutdownPrivilege	4936	WMIC.exe
Token: SeDebugPrivilege	4936	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4936	WMIC.exe
Token: SeRemoteShutdownPrivilege	4936	WMIC.exe
Token: SeUndockPrivilege	4936	WMIC.exe
Token: SeManageVolumePrivilege	4936	WMIC.exe
Token: 33	4936	WMIC.exe
Token: 34	4936	WMIC.exe
Token: 35	4936	WMIC.exe
Token: 36	4936	WMIC.exe
Token: SeBackupPrivilege	4804	wbengine.exe
Token: SeRestorePrivilege	4804	wbengine.exe
Token: SeSecurityPrivilege	4804	wbengine.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2888 wrote to memory of 848	2888	2024-04-15_463db363dcf29c2d1d498952586d815a_wannacry.exe	88
PID 2888 wrote to memory of 848	2888	2024-04-15_463db363dcf29c2d1d498952586d815a_wannacry.exe	88
PID 848 wrote to memory of 1796	848	svchost.exe	91
PID 848 wrote to memory of 1796	848	svchost.exe	91
PID 1796 wrote to memory of 5048	1796	cmd.exe	93
PID 1796 wrote to memory of 5048	1796	cmd.exe	93
PID 1796 wrote to memory of 4936	1796	cmd.exe	96
PID 1796 wrote to memory of 4936	1796	cmd.exe	96
PID 848 wrote to memory of 3564	848	svchost.exe	98
PID 848 wrote to memory of 3564	848	svchost.exe	98
PID 3564 wrote to memory of 1792	3564	cmd.exe	100
PID 3564 wrote to memory of 1792	3564	cmd.exe	100
PID 3564 wrote to memory of 2724	3564	cmd.exe	101
PID 3564 wrote to memory of 2724	3564	cmd.exe	101
PID 848 wrote to memory of 3832	848	svchost.exe	102
PID 848 wrote to memory of 3832	848	svchost.exe	102
PID 3832 wrote to memory of 5000	3832	cmd.exe	104
PID 3832 wrote to memory of 5000	3832	cmd.exe	104
PID 848 wrote to memory of 1596	848	svchost.exe	108
PID 848 wrote to memory of 1596	848	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\2024-04-15_463db363dcf29c2d1d498952586d815a_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-15_463db363dcf29c2d1d498952586d815a_wannacry.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2888
- 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:848
- - 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:1796
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:5048
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:4936
- - 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:3564
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1792
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2724
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3832
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:5000
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\READ_ME.txt
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:1596

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1856

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4804

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:4632

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
- Checks SCSI registry key(s)
PID:4024

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

Modify Registry

T1112

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

Defacement

T1491

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

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

Filesize
229KB

MD5
463db363dcf29c2d1d498952586d815a

SHA1
19145465538f02d6c4ab954bf45157badc18bf60

SHA256
fd7740837a82aed3fcce2869488e128bd7524fcf78f1f38bb604aea6e39d3469

SHA512
2e6618f4515f14916ad5b83b71d5c00c0e3dea7656cfbd1d598cfcd6f3cc418a679b5bdb1efdc4882e0ebc9b0c1f4a8dc4431706ebb8476b1d8f236d4b7c5985

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

Filesize
45B

MD5
0ec4d0317f9ae087ae1972b1d29e81e8

SHA1
b385917c22675e13c2f16492f3b3a254ac3e5262

SHA256
0c534a67e4f2c40b641a4be15304119316bbf93c12fa2d63ee219a92303f981b

SHA512
21d65dfaef39b478d3156499f949f4d79f0091de7eddd86802f5515c9abfbdf1c0981b8094f9a474e217efdb97931e093d08b3fd2fa2e6a92b461d71f8d7205d

Download Submit
memory/848-14-0x00007FFC74950000-0x00007FFC75411000-memory.dmp

Filesize
10.8MB

Download
memory/848-70-0x00007FFC74950000-0x00007FFC75411000-memory.dmp

Filesize
10.8MB

Download
memory/2888-0-0x00000000005C0000-0x0000000000600000-memory.dmp

Filesize
256KB

Download
memory/2888-1-0x00007FFC74950000-0x00007FFC75411000-memory.dmp

Filesize
10.8MB

Download
memory/2888-15-0x00007FFC74950000-0x00007FFC75411000-memory.dmp

Filesize
10.8MB

Download