chaos | 0a71319ea75bf60852564255acedf8ebca241dbce159599228b656c64a5407dc

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
26/03/2025, 14:31

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General

Target

2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
Size

349KB
MD5

17b62bf36407c8e313fb14203d61bdfa
SHA1

3bef15be182937139c874e22bbc4aa6a72755dcc
SHA256

0a71319ea75bf60852564255acedf8ebca241dbce159599228b656c64a5407dc
SHA512

d9e23d3efb23c1bda16b09d176a17f826689b5373518add6ecee2372a20566b87b2d39e314678fcb5626255f97c49b200678ee30603be0493c5b254ce894a9cc
SSDEEP

6144:Rr9SXlkEt9RGv5INQ0eLr9SXlkEt9RGv5INQ0e9:klkEHshINaulkEHshINa9

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/604-1-0x00000000001C0000-0x00000000001EC000-memory.dmp	family_chaos
behavioral1/files/0x000d000000012272-5.dat	family_chaos
behavioral1/memory/2480-7-0x0000000000E00000-0x0000000000E2C000-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
3020	bcdedit.exe
2920	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
2140	wbadmin.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_it.txt	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2480	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\Admin\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\Favorites\Links\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\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\Public\Music\Sample Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\Sample Videos\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\Favorites\Links for United States\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\Internet Explorer\Quick Launch\User Pinned\TaskBar\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\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\Start Menu\Programs\Accessories\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-1-5-21-3063565911-2056067323-3330884624-1000\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\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

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\xq7xbmbbh.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
2568	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1940	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2480	svchost.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
604	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
604	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
604	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
2480	svchost.exe
2480	svchost.exe
2480	svchost.exe
2480	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	604	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
Token: SeDebugPrivilege	2480	svchost.exe
Token: SeBackupPrivilege	592	vssvc.exe
Token: SeRestorePrivilege	592	vssvc.exe
Token: SeAuditPrivilege	592	vssvc.exe
Token: SeIncreaseQuotaPrivilege	2372	WMIC.exe
Token: SeSecurityPrivilege	2372	WMIC.exe
Token: SeTakeOwnershipPrivilege	2372	WMIC.exe
Token: SeLoadDriverPrivilege	2372	WMIC.exe
Token: SeSystemProfilePrivilege	2372	WMIC.exe
Token: SeSystemtimePrivilege	2372	WMIC.exe
Token: SeProfSingleProcessPrivilege	2372	WMIC.exe
Token: SeIncBasePriorityPrivilege	2372	WMIC.exe
Token: SeCreatePagefilePrivilege	2372	WMIC.exe
Token: SeBackupPrivilege	2372	WMIC.exe
Token: SeRestorePrivilege	2372	WMIC.exe
Token: SeShutdownPrivilege	2372	WMIC.exe
Token: SeDebugPrivilege	2372	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2372	WMIC.exe
Token: SeRemoteShutdownPrivilege	2372	WMIC.exe
Token: SeUndockPrivilege	2372	WMIC.exe
Token: SeManageVolumePrivilege	2372	WMIC.exe
Token: 33	2372	WMIC.exe
Token: 34	2372	WMIC.exe
Token: 35	2372	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2372	WMIC.exe
Token: SeSecurityPrivilege	2372	WMIC.exe
Token: SeTakeOwnershipPrivilege	2372	WMIC.exe
Token: SeLoadDriverPrivilege	2372	WMIC.exe
Token: SeSystemProfilePrivilege	2372	WMIC.exe
Token: SeSystemtimePrivilege	2372	WMIC.exe
Token: SeProfSingleProcessPrivilege	2372	WMIC.exe
Token: SeIncBasePriorityPrivilege	2372	WMIC.exe
Token: SeCreatePagefilePrivilege	2372	WMIC.exe
Token: SeBackupPrivilege	2372	WMIC.exe
Token: SeRestorePrivilege	2372	WMIC.exe
Token: SeShutdownPrivilege	2372	WMIC.exe
Token: SeDebugPrivilege	2372	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2372	WMIC.exe
Token: SeRemoteShutdownPrivilege	2372	WMIC.exe
Token: SeUndockPrivilege	2372	WMIC.exe
Token: SeManageVolumePrivilege	2372	WMIC.exe
Token: 33	2372	WMIC.exe
Token: 34	2372	WMIC.exe
Token: 35	2372	WMIC.exe
Token: SeBackupPrivilege	2108	wbengine.exe
Token: SeRestorePrivilege	2108	wbengine.exe
Token: SeSecurityPrivilege	2108	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 604 wrote to memory of 2480	604	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe	31
PID 604 wrote to memory of 2480	604	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe	31
PID 604 wrote to memory of 2480	604	2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe	31
PID 2480 wrote to memory of 1676	2480	svchost.exe	32
PID 2480 wrote to memory of 1676	2480	svchost.exe	32
PID 2480 wrote to memory of 1676	2480	svchost.exe	32
PID 1676 wrote to memory of 2568	1676	cmd.exe	34
PID 1676 wrote to memory of 2568	1676	cmd.exe	34
PID 1676 wrote to memory of 2568	1676	cmd.exe	34
PID 1676 wrote to memory of 2372	1676	cmd.exe	38
PID 1676 wrote to memory of 2372	1676	cmd.exe	38
PID 1676 wrote to memory of 2372	1676	cmd.exe	38
PID 2480 wrote to memory of 2916	2480	svchost.exe	40
PID 2480 wrote to memory of 2916	2480	svchost.exe	40
PID 2480 wrote to memory of 2916	2480	svchost.exe	40
PID 2916 wrote to memory of 3020	2916	cmd.exe	42
PID 2916 wrote to memory of 3020	2916	cmd.exe	42
PID 2916 wrote to memory of 3020	2916	cmd.exe	42
PID 2916 wrote to memory of 2920	2916	cmd.exe	43
PID 2916 wrote to memory of 2920	2916	cmd.exe	43
PID 2916 wrote to memory of 2920	2916	cmd.exe	43
PID 2480 wrote to memory of 3008	2480	svchost.exe	44
PID 2480 wrote to memory of 3008	2480	svchost.exe	44
PID 2480 wrote to memory of 3008	2480	svchost.exe	44
PID 3008 wrote to memory of 2140	3008	cmd.exe	46
PID 3008 wrote to memory of 2140	3008	cmd.exe	46
PID 3008 wrote to memory of 2140	3008	cmd.exe	46
PID 2480 wrote to memory of 1940	2480	svchost.exe	50
PID 2480 wrote to memory of 1940	2480	svchost.exe	50
PID 2480 wrote to memory of 1940	2480	svchost.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\2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-26_17b62bf36407c8e313fb14203d61bdfa_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:604
- 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:2480
- - 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:1676
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2568
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2372
- - 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:2916
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:3020
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2920
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3008
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:2140
- - 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:1940

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:592

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2108

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:2128

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:1104

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
349KB

MD5
17b62bf36407c8e313fb14203d61bdfa

SHA1
3bef15be182937139c874e22bbc4aa6a72755dcc

SHA256
0a71319ea75bf60852564255acedf8ebca241dbce159599228b656c64a5407dc

SHA512
d9e23d3efb23c1bda16b09d176a17f826689b5373518add6ecee2372a20566b87b2d39e314678fcb5626255f97c49b200678ee30603be0493c5b254ce894a9cc

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

Filesize
26B

MD5
2f5f91d0ed875c4094929f40d14cc78b

SHA1
663c0f8f198b1d74eba7c0d85fde32721697f468

SHA256
d1d072d1de5c97fbd0a59d7acaf188ba8d444e0c5cd0045ecebe658141684823

SHA512
6871fb46e7e1c6b03b75f9d5305f31f11d3f27c39319af410b6b77e6ebe6b30e09e98a962929c045e113cdde81acde3e7a5a8c95c30a84bb879c87999777ff1f

Download Submit
memory/604-0-0x000007FEF55F3000-0x000007FEF55F4000-memory.dmp

Filesize
4KB

Download
memory/604-1-0x00000000001C0000-0x00000000001EC000-memory.dmp

Filesize
176KB

Download
memory/2480-7-0x0000000000E00000-0x0000000000E2C000-memory.dmp

Filesize
176KB

Download
memory/2480-58-0x000007FEF55F0000-0x000007FEF5FDC000-memory.dmp

Filesize
9.9MB

Download
memory/2480-75-0x000007FEF55F0000-0x000007FEF5FDC000-memory.dmp

Filesize
9.9MB

Download
memory/2480-76-0x000007FEF55F0000-0x000007FEF5FDC000-memory.dmp

Filesize
9.9MB

Download