chaos | 52d96d3cd970fe4a0e747ab7a9f38d211a14038fedaa01abb21aead0887cdf64

Analysis

max time kernel
122s
max time network
122s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
26/03/2025, 05:25

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General

Target

2025-03-26_58cec69d3a2b85bae9b6bd4ad6a2d2c3_wannacry.exe
Size

150KB
MD5

58cec69d3a2b85bae9b6bd4ad6a2d2c3
SHA1

04996fe1007c059bd24ccdb1205e179f28d6791b
SHA256

52d96d3cd970fe4a0e747ab7a9f38d211a14038fedaa01abb21aead0887cdf64
SHA512

7b4c5055a832bc352416f19a9c21c7f0ac456f6c2d0c0702b53d6797c13de8a922d0a0808eb5e6d649cde62983c56432093346050a47aadc4edf77b3c0b30752
SSDEEP

3072:lM3kO/QVr9SXlvPmJ2m72jPr7ppE0TtRrC/LZrk6/QgTmOIN1:Rr9SXlkEt9RGv5IN

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/1712-1-0x0000000001370000-0x000000000139C000-memory.dmp	family_chaos
behavioral1/files/0x00090000000120f9-4.dat	family_chaos
behavioral1/memory/2328-7-0x0000000000C70000-0x0000000000C9C000-memory.dmp	family_chaos

Chaos 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
1300	bcdedit.exe
1424	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
2524	wbadmin.exe

Drops startup file 3 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
2328	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\Public\Videos\Sample 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\Start Menu\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links for United States\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\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	F:\$RECYCLE.BIN\S-1-5-21-2039016743-699959520-214465309-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\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\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	svchost.exe
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\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\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\System Tools\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\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\Favorites\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\Maintenance\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\Sample Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\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
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\Public\Videos\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-1-5-21-2039016743-699959520-214465309-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\fljlg5r4a.jpg"	svchost.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
2336	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
448	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2328	svchost.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1712	2025-03-26_58cec69d3a2b85bae9b6bd4ad6a2d2c3_wannacry.exe
1712	2025-03-26_58cec69d3a2b85bae9b6bd4ad6a2d2c3_wannacry.exe
1712	2025-03-26_58cec69d3a2b85bae9b6bd4ad6a2d2c3_wannacry.exe
2328	svchost.exe
2328	svchost.exe
2328	svchost.exe
2328	svchost.exe
2328	svchost.exe
2328	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	1712	2025-03-26_58cec69d3a2b85bae9b6bd4ad6a2d2c3_wannacry.exe
Token: SeDebugPrivilege	2328	svchost.exe
Token: SeBackupPrivilege	2976	vssvc.exe
Token: SeRestorePrivilege	2976	vssvc.exe
Token: SeAuditPrivilege	2976	vssvc.exe
Token: SeIncreaseQuotaPrivilege	2736	WMIC.exe
Token: SeSecurityPrivilege	2736	WMIC.exe
Token: SeTakeOwnershipPrivilege	2736	WMIC.exe
Token: SeLoadDriverPrivilege	2736	WMIC.exe
Token: SeSystemProfilePrivilege	2736	WMIC.exe
Token: SeSystemtimePrivilege	2736	WMIC.exe
Token: SeProfSingleProcessPrivilege	2736	WMIC.exe
Token: SeIncBasePriorityPrivilege	2736	WMIC.exe
Token: SeCreatePagefilePrivilege	2736	WMIC.exe
Token: SeBackupPrivilege	2736	WMIC.exe
Token: SeRestorePrivilege	2736	WMIC.exe
Token: SeShutdownPrivilege	2736	WMIC.exe
Token: SeDebugPrivilege	2736	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2736	WMIC.exe
Token: SeRemoteShutdownPrivilege	2736	WMIC.exe
Token: SeUndockPrivilege	2736	WMIC.exe
Token: SeManageVolumePrivilege	2736	WMIC.exe
Token: 33	2736	WMIC.exe
Token: 34	2736	WMIC.exe
Token: 35	2736	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2736	WMIC.exe
Token: SeSecurityPrivilege	2736	WMIC.exe
Token: SeTakeOwnershipPrivilege	2736	WMIC.exe
Token: SeLoadDriverPrivilege	2736	WMIC.exe
Token: SeSystemProfilePrivilege	2736	WMIC.exe
Token: SeSystemtimePrivilege	2736	WMIC.exe
Token: SeProfSingleProcessPrivilege	2736	WMIC.exe
Token: SeIncBasePriorityPrivilege	2736	WMIC.exe
Token: SeCreatePagefilePrivilege	2736	WMIC.exe
Token: SeBackupPrivilege	2736	WMIC.exe
Token: SeRestorePrivilege	2736	WMIC.exe
Token: SeShutdownPrivilege	2736	WMIC.exe
Token: SeDebugPrivilege	2736	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2736	WMIC.exe
Token: SeRemoteShutdownPrivilege	2736	WMIC.exe
Token: SeUndockPrivilege	2736	WMIC.exe
Token: SeManageVolumePrivilege	2736	WMIC.exe
Token: 33	2736	WMIC.exe
Token: 34	2736	WMIC.exe
Token: 35	2736	WMIC.exe
Token: SeBackupPrivilege	2608	wbengine.exe
Token: SeRestorePrivilege	2608	wbengine.exe
Token: SeSecurityPrivilege	2608	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1712 wrote to memory of 2328	1712	2025-03-26_58cec69d3a2b85bae9b6bd4ad6a2d2c3_wannacry.exe	30
PID 1712 wrote to memory of 2328	1712	2025-03-26_58cec69d3a2b85bae9b6bd4ad6a2d2c3_wannacry.exe	30
PID 1712 wrote to memory of 2328	1712	2025-03-26_58cec69d3a2b85bae9b6bd4ad6a2d2c3_wannacry.exe	30
PID 2328 wrote to memory of 3052	2328	svchost.exe	31
PID 2328 wrote to memory of 3052	2328	svchost.exe	31
PID 2328 wrote to memory of 3052	2328	svchost.exe	31
PID 3052 wrote to memory of 2336	3052	cmd.exe	33
PID 3052 wrote to memory of 2336	3052	cmd.exe	33
PID 3052 wrote to memory of 2336	3052	cmd.exe	33
PID 3052 wrote to memory of 2736	3052	cmd.exe	37
PID 3052 wrote to memory of 2736	3052	cmd.exe	37
PID 3052 wrote to memory of 2736	3052	cmd.exe	37
PID 2328 wrote to memory of 880	2328	svchost.exe	39
PID 2328 wrote to memory of 880	2328	svchost.exe	39
PID 2328 wrote to memory of 880	2328	svchost.exe	39
PID 880 wrote to memory of 1300	880	cmd.exe	41
PID 880 wrote to memory of 1300	880	cmd.exe	41
PID 880 wrote to memory of 1300	880	cmd.exe	41
PID 880 wrote to memory of 1424	880	cmd.exe	42
PID 880 wrote to memory of 1424	880	cmd.exe	42
PID 880 wrote to memory of 1424	880	cmd.exe	42
PID 2328 wrote to memory of 2716	2328	svchost.exe	43
PID 2328 wrote to memory of 2716	2328	svchost.exe	43
PID 2328 wrote to memory of 2716	2328	svchost.exe	43
PID 2716 wrote to memory of 2524	2716	cmd.exe	45
PID 2716 wrote to memory of 2524	2716	cmd.exe	45
PID 2716 wrote to memory of 2524	2716	cmd.exe	45
PID 2328 wrote to memory of 448	2328	svchost.exe	49
PID 2328 wrote to memory of 448	2328	svchost.exe	49
PID 2328 wrote to memory of 448	2328	svchost.exe	49

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\2025-03-26_58cec69d3a2b85bae9b6bd4ad6a2d2c3_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-26_58cec69d3a2b85bae9b6bd4ad6a2d2c3_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1712
- C:\Users\Admin\AppData\Roaming\svchost.exe
  "C:\Users\Admin\AppData\Roaming\svchost.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:2328
- - 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:3052
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2336
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2736
- - 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:880
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1300
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1424
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2716
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:2524
- - 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:448

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2976

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2608

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:2576

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:2100

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

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
150KB

MD5
58cec69d3a2b85bae9b6bd4ad6a2d2c3

SHA1
04996fe1007c059bd24ccdb1205e179f28d6791b

SHA256
52d96d3cd970fe4a0e747ab7a9f38d211a14038fedaa01abb21aead0887cdf64

SHA512
7b4c5055a832bc352416f19a9c21c7f0ac456f6c2d0c0702b53d6797c13de8a922d0a0808eb5e6d649cde62983c56432093346050a47aadc4edf77b3c0b30752

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

Filesize
26B

MD5
2f5f91d0ed875c4094929f40d14cc78b

SHA1
663c0f8f198b1d74eba7c0d85fde32721697f468

SHA256
d1d072d1de5c97fbd0a59d7acaf188ba8d444e0c5cd0045ecebe658141684823

SHA512
6871fb46e7e1c6b03b75f9d5305f31f11d3f27c39319af410b6b77e6ebe6b30e09e98a962929c045e113cdde81acde3e7a5a8c95c30a84bb879c87999777ff1f

Download Submit
memory/1712-0-0x000007FEF5BC3000-0x000007FEF5BC4000-memory.dmp

Filesize
4KB

Download
memory/1712-1-0x0000000001370000-0x000000000139C000-memory.dmp

Filesize
176KB

Download
memory/2328-7-0x0000000000C70000-0x0000000000C9C000-memory.dmp

Filesize
176KB

Download
memory/2328-58-0x000007FEF5BC0000-0x000007FEF65AC000-memory.dmp

Filesize
9.9MB

Download
memory/2328-73-0x000007FEF5BC0000-0x000007FEF65AC000-memory.dmp

Filesize
9.9MB

Download
memory/2328-74-0x000007FEF5BC0000-0x000007FEF65AC000-memory.dmp

Filesize
9.9MB

Download