chaos | 003e04280d9882a3295c8e316611ce09b72630f08864de38ad4f6e5c9e8b97e7

Analysis

max time kernel
120s
max time network
123s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
02-09-2024 04:22

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General

Target

2024-09-02_176d7c5772d3d187f7f543689a051176_chaos_destroyer_wannacry.exe
Size

34KB
MD5

176d7c5772d3d187f7f543689a051176
SHA1

67120fe8a5e1a216e718836c7dddd1689f391c5c
SHA256

003e04280d9882a3295c8e316611ce09b72630f08864de38ad4f6e5c9e8b97e7
SHA512

86239b149df8675ed35e98d68ebd40c36da448f01a0d7b13733f741b18c7f70dee29afeb82ce6a14b3b975c21ef0a5653257e0f038521afb5e6d48e6ed409a24
SSDEEP

384:13Mg/bqo22dQq3djaUpRDK5+98cJcr91CppnfCxTsgFUfBUcbcyrE6hei:Pqo2BqN9pRDiN0cr90fMY4cB0Eei

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 3 IoCs

resource	yara_rule
behavioral1/memory/1604-1-0x0000000001040000-0x000000000104E000-memory.dmp	family_chaos
behavioral1/files/0x000b0000000120f1-5.dat	family_chaos
behavioral1/memory/2412-7-0x0000000000AC0000-0x0000000000ACE000-memory.dmp	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
1868	bcdedit.exe
2196	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
1360	wbadmin.exe

Drops startup file 3 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Runtime Broker.url	Runtime Broker.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini	Runtime Broker.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\LEIA-ME.txt	Runtime Broker.exe

Executes dropped EXE 1 IoCs

pid	Process
2412	Runtime Broker.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\Public\Videos\Sample Videos\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\Favorites\Links for United States\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\Saved Games\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	Runtime Broker.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-3294248377-1418901787-4083263181-1000\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Public\Music\Sample Music\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	Runtime Broker.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-1-5-21-3294248377-1418901787-4083263181-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\q4e0h6b1x.jpg"	Runtime Broker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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
2300	vssadmin.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2412	Runtime Broker.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
1604	2024-09-02_176d7c5772d3d187f7f543689a051176_chaos_destroyer_wannacry.exe
1604	2024-09-02_176d7c5772d3d187f7f543689a051176_chaos_destroyer_wannacry.exe
1604	2024-09-02_176d7c5772d3d187f7f543689a051176_chaos_destroyer_wannacry.exe
2412	Runtime Broker.exe
2412	Runtime Broker.exe
2412	Runtime Broker.exe
2412	Runtime Broker.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	1604	2024-09-02_176d7c5772d3d187f7f543689a051176_chaos_destroyer_wannacry.exe
Token: SeDebugPrivilege	2412	Runtime Broker.exe
Token: SeBackupPrivilege	1808	vssvc.exe
Token: SeRestorePrivilege	1808	vssvc.exe
Token: SeAuditPrivilege	1808	vssvc.exe
Token: SeIncreaseQuotaPrivilege	2972	WMIC.exe
Token: SeSecurityPrivilege	2972	WMIC.exe
Token: SeTakeOwnershipPrivilege	2972	WMIC.exe
Token: SeLoadDriverPrivilege	2972	WMIC.exe
Token: SeSystemProfilePrivilege	2972	WMIC.exe
Token: SeSystemtimePrivilege	2972	WMIC.exe
Token: SeProfSingleProcessPrivilege	2972	WMIC.exe
Token: SeIncBasePriorityPrivilege	2972	WMIC.exe
Token: SeCreatePagefilePrivilege	2972	WMIC.exe
Token: SeBackupPrivilege	2972	WMIC.exe
Token: SeRestorePrivilege	2972	WMIC.exe
Token: SeShutdownPrivilege	2972	WMIC.exe
Token: SeDebugPrivilege	2972	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2972	WMIC.exe
Token: SeRemoteShutdownPrivilege	2972	WMIC.exe
Token: SeUndockPrivilege	2972	WMIC.exe
Token: SeManageVolumePrivilege	2972	WMIC.exe
Token: 33	2972	WMIC.exe
Token: 34	2972	WMIC.exe
Token: 35	2972	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2972	WMIC.exe
Token: SeSecurityPrivilege	2972	WMIC.exe
Token: SeTakeOwnershipPrivilege	2972	WMIC.exe
Token: SeLoadDriverPrivilege	2972	WMIC.exe
Token: SeSystemProfilePrivilege	2972	WMIC.exe
Token: SeSystemtimePrivilege	2972	WMIC.exe
Token: SeProfSingleProcessPrivilege	2972	WMIC.exe
Token: SeIncBasePriorityPrivilege	2972	WMIC.exe
Token: SeCreatePagefilePrivilege	2972	WMIC.exe
Token: SeBackupPrivilege	2972	WMIC.exe
Token: SeRestorePrivilege	2972	WMIC.exe
Token: SeShutdownPrivilege	2972	WMIC.exe
Token: SeDebugPrivilege	2972	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2972	WMIC.exe
Token: SeRemoteShutdownPrivilege	2972	WMIC.exe
Token: SeUndockPrivilege	2972	WMIC.exe
Token: SeManageVolumePrivilege	2972	WMIC.exe
Token: 33	2972	WMIC.exe
Token: 34	2972	WMIC.exe
Token: 35	2972	WMIC.exe
Token: SeBackupPrivilege	1804	wbengine.exe
Token: SeRestorePrivilege	1804	wbengine.exe
Token: SeSecurityPrivilege	1804	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1604 wrote to memory of 2412	1604	2024-09-02_176d7c5772d3d187f7f543689a051176_chaos_destroyer_wannacry.exe	30
PID 1604 wrote to memory of 2412	1604	2024-09-02_176d7c5772d3d187f7f543689a051176_chaos_destroyer_wannacry.exe	30
PID 1604 wrote to memory of 2412	1604	2024-09-02_176d7c5772d3d187f7f543689a051176_chaos_destroyer_wannacry.exe	30
PID 2412 wrote to memory of 316	2412	Runtime Broker.exe	32
PID 2412 wrote to memory of 316	2412	Runtime Broker.exe	32
PID 2412 wrote to memory of 316	2412	Runtime Broker.exe	32
PID 316 wrote to memory of 2300	316	cmd.exe	34
PID 316 wrote to memory of 2300	316	cmd.exe	34
PID 316 wrote to memory of 2300	316	cmd.exe	34
PID 316 wrote to memory of 2972	316	cmd.exe	37
PID 316 wrote to memory of 2972	316	cmd.exe	37
PID 316 wrote to memory of 2972	316	cmd.exe	37
PID 2412 wrote to memory of 2040	2412	Runtime Broker.exe	39
PID 2412 wrote to memory of 2040	2412	Runtime Broker.exe	39
PID 2412 wrote to memory of 2040	2412	Runtime Broker.exe	39
PID 2040 wrote to memory of 1868	2040	cmd.exe	41
PID 2040 wrote to memory of 1868	2040	cmd.exe	41
PID 2040 wrote to memory of 1868	2040	cmd.exe	41
PID 2040 wrote to memory of 2196	2040	cmd.exe	42
PID 2040 wrote to memory of 2196	2040	cmd.exe	42
PID 2040 wrote to memory of 2196	2040	cmd.exe	42
PID 2412 wrote to memory of 2252	2412	Runtime Broker.exe	43
PID 2412 wrote to memory of 2252	2412	Runtime Broker.exe	43
PID 2412 wrote to memory of 2252	2412	Runtime Broker.exe	43
PID 2252 wrote to memory of 1360	2252	cmd.exe	45
PID 2252 wrote to memory of 1360	2252	cmd.exe	45
PID 2252 wrote to memory of 1360	2252	cmd.exe	45
PID 2412 wrote to memory of 2136	2412	Runtime Broker.exe	50
PID 2412 wrote to memory of 2136	2412	Runtime Broker.exe	50
PID 2412 wrote to memory of 2136	2412	Runtime Broker.exe	50

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\2024-09-02_176d7c5772d3d187f7f543689a051176_chaos_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-02_176d7c5772d3d187f7f543689a051176_chaos_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1604
- C:\Users\Admin\AppData\Roaming\Runtime Broker.exe
  "C:\Users\Admin\AppData\Roaming\Runtime Broker.exe"
  2⤵
  - 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:2412
- - 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:316
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2300
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2972
- - 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:2040
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1868
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2196
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2252
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:1360
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\LEIA-ME.txt
    3⤵
    PID:2136

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1808

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1804

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:3028

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:352

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

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

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\Runtime Broker.exe

Filesize
34KB

MD5
176d7c5772d3d187f7f543689a051176

SHA1
67120fe8a5e1a216e718836c7dddd1689f391c5c

SHA256
003e04280d9882a3295c8e316611ce09b72630f08864de38ad4f6e5c9e8b97e7

SHA512
86239b149df8675ed35e98d68ebd40c36da448f01a0d7b13733f741b18c7f70dee29afeb82ce6a14b3b975c21ef0a5653257e0f038521afb5e6d48e6ed409a24

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

Filesize
705B

MD5
1c398367a64672d0eb7af20158b68453

SHA1
04fc52a60a4ffa8d0488ff6b324f811d238de8dc

SHA256
39cddd370373a1355f3a958121e83b5642ca0beb374189a0f36666b5d5ae702c

SHA512
a95da9ad76087043ab7cc09f330c2dabe22ceae4406e3158c5219a21edde632ac1c8c0a2afc740373d373dd30341e8a77fae1ef3cb51efa964df58f135ec5d39

Download Submit
memory/1604-0-0x000007FEF5EB3000-0x000007FEF5EB4000-memory.dmp

Filesize
4KB

Download
memory/1604-1-0x0000000001040000-0x000000000104E000-memory.dmp

Filesize
56KB

Download
memory/2412-7-0x0000000000AC0000-0x0000000000ACE000-memory.dmp

Filesize
56KB

Download
memory/2412-9-0x000007FEF5EB0000-0x000007FEF689C000-memory.dmp

Filesize
9.9MB

Download
memory/2412-16-0x000007FEF5EB0000-0x000007FEF689C000-memory.dmp

Filesize
9.9MB

Download
memory/2412-508-0x000007FEF5EB0000-0x000007FEF689C000-memory.dmp

Filesize
9.9MB

Download
memory/2412-509-0x000007FEF5EB0000-0x000007FEF689C000-memory.dmp

Filesize
9.9MB

Download