chaos | 4e84058c96d0e09c5d2fd1f64adc741a7997c4e11eea3c88ac4348acf2665d54

Analysis

max time kernel
150s
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
19-03-2024 02:36

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General

Target

2024-03-19_6485a5e01ed5d851cb8e328840313b06_wannacry.exe
Size

104KB
MD5

6485a5e01ed5d851cb8e328840313b06
SHA1

ae420688cb83c6221295e7df991bda2308d55009
SHA256

4e84058c96d0e09c5d2fd1f64adc741a7997c4e11eea3c88ac4348acf2665d54
SHA512

17db71ae48c93cc70af1ee04f8c22ef61fd4c1a626b8938c73f767cdf8ff7630511312743fd6c476219469965a5b9bd2ca925e07e44c44cd6d62c7ba7e1a2f5b
SSDEEP

1536:q3kIhVr9SrJLhXCOrj/Fd1C4PRDu3PBri:q3kKVr9SlVCyfPRD4i

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/3592-0-0x00000000003D0000-0x00000000003F0000-memory.dmp	family_chaos
behavioral2/files/0x0008000000016963-6.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/3592-0-0x00000000003D0000-0x00000000003F0000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral2/files/0x0008000000016963-6.dat	INDICATOR_SUSPICIOUS_GENRansomware

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
3184	bcdedit.exe
3500	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
4972	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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	svchost.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-03-19_6485a5e01ed5d851cb8e328840313b06_wannacry.exe

Drops startup file 3 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\read_it.txt	svchost.exe
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

Executes dropped EXE 1 IoCs

pid	Process
2424	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\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\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\Windows\Start Menu\Programs\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\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\Links\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\Accessibility\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-3270530367-132075249-2153716227-1000\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\System Tools\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\Start Menu\Programs\Maintenance\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\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\Internet Explorer\Quick Launch\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\Desktop\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\Administrative Tools\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\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\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	C:\Users\Admin\Downloads\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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\mtdgf63b5.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 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
3952	vssadmin.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000_Classes\Local Settings	svchost.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2788	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2424	svchost.exe

Suspicious behavior: EnumeratesProcesses 49 IoCs

pid	Process
3592	2024-03-19_6485a5e01ed5d851cb8e328840313b06_wannacry.exe
3592	2024-03-19_6485a5e01ed5d851cb8e328840313b06_wannacry.exe
3592	2024-03-19_6485a5e01ed5d851cb8e328840313b06_wannacry.exe
3592	2024-03-19_6485a5e01ed5d851cb8e328840313b06_wannacry.exe
3592	2024-03-19_6485a5e01ed5d851cb8e328840313b06_wannacry.exe
3592	2024-03-19_6485a5e01ed5d851cb8e328840313b06_wannacry.exe
3592	2024-03-19_6485a5e01ed5d851cb8e328840313b06_wannacry.exe
3592	2024-03-19_6485a5e01ed5d851cb8e328840313b06_wannacry.exe
3592	2024-03-19_6485a5e01ed5d851cb8e328840313b06_wannacry.exe
3592	2024-03-19_6485a5e01ed5d851cb8e328840313b06_wannacry.exe
3592	2024-03-19_6485a5e01ed5d851cb8e328840313b06_wannacry.exe
3592	2024-03-19_6485a5e01ed5d851cb8e328840313b06_wannacry.exe
3592	2024-03-19_6485a5e01ed5d851cb8e328840313b06_wannacry.exe
3592	2024-03-19_6485a5e01ed5d851cb8e328840313b06_wannacry.exe
3592	2024-03-19_6485a5e01ed5d851cb8e328840313b06_wannacry.exe
3592	2024-03-19_6485a5e01ed5d851cb8e328840313b06_wannacry.exe
3592	2024-03-19_6485a5e01ed5d851cb8e328840313b06_wannacry.exe
3592	2024-03-19_6485a5e01ed5d851cb8e328840313b06_wannacry.exe
3592	2024-03-19_6485a5e01ed5d851cb8e328840313b06_wannacry.exe
3592	2024-03-19_6485a5e01ed5d851cb8e328840313b06_wannacry.exe
3592	2024-03-19_6485a5e01ed5d851cb8e328840313b06_wannacry.exe
3592	2024-03-19_6485a5e01ed5d851cb8e328840313b06_wannacry.exe
3592	2024-03-19_6485a5e01ed5d851cb8e328840313b06_wannacry.exe
2424	svchost.exe
2424	svchost.exe
2424	svchost.exe
2424	svchost.exe
2424	svchost.exe
2424	svchost.exe
2424	svchost.exe
2424	svchost.exe
2424	svchost.exe
2424	svchost.exe
2424	svchost.exe
2424	svchost.exe
2424	svchost.exe
2424	svchost.exe
2424	svchost.exe
2424	svchost.exe
2424	svchost.exe
2424	svchost.exe
2424	svchost.exe
2424	svchost.exe
2424	svchost.exe
2424	svchost.exe
2424	svchost.exe
2424	svchost.exe
2424	svchost.exe
2424	svchost.exe

Suspicious use of AdjustPrivilegeToken 50 IoCs

description	pid	Process
Token: SeDebugPrivilege	3592	2024-03-19_6485a5e01ed5d851cb8e328840313b06_wannacry.exe
Token: SeDebugPrivilege	2424	svchost.exe
Token: SeBackupPrivilege	2824	vssvc.exe
Token: SeRestorePrivilege	2824	vssvc.exe
Token: SeAuditPrivilege	2824	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1796	WMIC.exe
Token: SeSecurityPrivilege	1796	WMIC.exe
Token: SeTakeOwnershipPrivilege	1796	WMIC.exe
Token: SeLoadDriverPrivilege	1796	WMIC.exe
Token: SeSystemProfilePrivilege	1796	WMIC.exe
Token: SeSystemtimePrivilege	1796	WMIC.exe
Token: SeProfSingleProcessPrivilege	1796	WMIC.exe
Token: SeIncBasePriorityPrivilege	1796	WMIC.exe
Token: SeCreatePagefilePrivilege	1796	WMIC.exe
Token: SeBackupPrivilege	1796	WMIC.exe
Token: SeRestorePrivilege	1796	WMIC.exe
Token: SeShutdownPrivilege	1796	WMIC.exe
Token: SeDebugPrivilege	1796	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1796	WMIC.exe
Token: SeRemoteShutdownPrivilege	1796	WMIC.exe
Token: SeUndockPrivilege	1796	WMIC.exe
Token: SeManageVolumePrivilege	1796	WMIC.exe
Token: 33	1796	WMIC.exe
Token: 34	1796	WMIC.exe
Token: 35	1796	WMIC.exe
Token: 36	1796	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1796	WMIC.exe
Token: SeSecurityPrivilege	1796	WMIC.exe
Token: SeTakeOwnershipPrivilege	1796	WMIC.exe
Token: SeLoadDriverPrivilege	1796	WMIC.exe
Token: SeSystemProfilePrivilege	1796	WMIC.exe
Token: SeSystemtimePrivilege	1796	WMIC.exe
Token: SeProfSingleProcessPrivilege	1796	WMIC.exe
Token: SeIncBasePriorityPrivilege	1796	WMIC.exe
Token: SeCreatePagefilePrivilege	1796	WMIC.exe
Token: SeBackupPrivilege	1796	WMIC.exe
Token: SeRestorePrivilege	1796	WMIC.exe
Token: SeShutdownPrivilege	1796	WMIC.exe
Token: SeDebugPrivilege	1796	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1796	WMIC.exe
Token: SeRemoteShutdownPrivilege	1796	WMIC.exe
Token: SeUndockPrivilege	1796	WMIC.exe
Token: SeManageVolumePrivilege	1796	WMIC.exe
Token: 33	1796	WMIC.exe
Token: 34	1796	WMIC.exe
Token: 35	1796	WMIC.exe
Token: 36	1796	WMIC.exe
Token: SeBackupPrivilege	4852	wbengine.exe
Token: SeRestorePrivilege	4852	wbengine.exe
Token: SeSecurityPrivilege	4852	wbengine.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 3592 wrote to memory of 2424	3592	2024-03-19_6485a5e01ed5d851cb8e328840313b06_wannacry.exe	91
PID 3592 wrote to memory of 2424	3592	2024-03-19_6485a5e01ed5d851cb8e328840313b06_wannacry.exe	91
PID 2424 wrote to memory of 4888	2424	svchost.exe	92
PID 2424 wrote to memory of 4888	2424	svchost.exe	92
PID 4888 wrote to memory of 3952	4888	cmd.exe	94
PID 4888 wrote to memory of 3952	4888	cmd.exe	94
PID 4888 wrote to memory of 1796	4888	cmd.exe	97
PID 4888 wrote to memory of 1796	4888	cmd.exe	97
PID 2424 wrote to memory of 2192	2424	svchost.exe	99
PID 2424 wrote to memory of 2192	2424	svchost.exe	99
PID 2192 wrote to memory of 3184	2192	cmd.exe	101
PID 2192 wrote to memory of 3184	2192	cmd.exe	101
PID 2192 wrote to memory of 3500	2192	cmd.exe	102
PID 2192 wrote to memory of 3500	2192	cmd.exe	102
PID 2424 wrote to memory of 2440	2424	svchost.exe	103
PID 2424 wrote to memory of 2440	2424	svchost.exe	103
PID 2440 wrote to memory of 4972	2440	cmd.exe	105
PID 2440 wrote to memory of 4972	2440	cmd.exe	105
PID 2424 wrote to memory of 2788	2424	svchost.exe	111
PID 2424 wrote to memory of 2788	2424	svchost.exe	111

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\2024-03-19_6485a5e01ed5d851cb8e328840313b06_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-19_6485a5e01ed5d851cb8e328840313b06_wannacry.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3592
- 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:2424
- - 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:4888
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:3952
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1796
- - 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:2192
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:3184
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:3500
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2440
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:4972
- - 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:2788

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2824

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4852

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:1472

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
- Checks SCSI registry key(s)
PID:3000

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
104KB

MD5
6485a5e01ed5d851cb8e328840313b06

SHA1
ae420688cb83c6221295e7df991bda2308d55009

SHA256
4e84058c96d0e09c5d2fd1f64adc741a7997c4e11eea3c88ac4348acf2665d54

SHA512
17db71ae48c93cc70af1ee04f8c22ef61fd4c1a626b8938c73f767cdf8ff7630511312743fd6c476219469965a5b9bd2ca925e07e44c44cd6d62c7ba7e1a2f5b

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

Filesize
775B

MD5
2d5b13f23937311ea1ed54b634e47078

SHA1
5adc85bd18d20e7d002de26a7493e20d001ae08d

SHA256
b81cef624b4c47cc3c78f987da1e5960c847a735f89524f36158719e2e0ef730

SHA512
527f21918c07f615a5059c2f2753f83c8b6acf2d8edde2d2d8fc1e56dad9f047484642e259a5e65b653ee33cfd484ced7bd113e080b91f6f888377868ec61612

Download Submit
memory/2424-14-0x00007FFC2C730000-0x00007FFC2D1F1000-memory.dmp

Filesize
10.8MB

Download
memory/2424-71-0x00007FFC2C730000-0x00007FFC2D1F1000-memory.dmp

Filesize
10.8MB

Download
memory/3592-0-0x00000000003D0000-0x00000000003F0000-memory.dmp

Filesize
128KB

Download
memory/3592-1-0x00007FFC2C730000-0x00007FFC2D1F1000-memory.dmp

Filesize
10.8MB

Download
memory/3592-15-0x00007FFC2C730000-0x00007FFC2D1F1000-memory.dmp

Filesize
10.8MB

Download