chaos | c50c9a28e88dbdfc9835e3722434af2db792c66d9ce1f496b395101289990e56

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02-12-2024 19:36

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General

Target

2024-12-02_fa9f7699ccdb08c6ba4a9f4aa62ff64c_destroyer_wannacry.exe
Size

22KB
MD5

fa9f7699ccdb08c6ba4a9f4aa62ff64c
SHA1

b82759e29cecec7a0dd06c52c9259e4b24c6ff67
SHA256

c50c9a28e88dbdfc9835e3722434af2db792c66d9ce1f496b395101289990e56
SHA512

277c3eb7eb3b7de7451dc95da1103746ade6622cc66b09cb6b9e0a287dfdf5f2cdda5728619ab6c024db22ebf226af3a0232989ecef452c81fd07dcf01a5770f
SSDEEP

384:33Mg/bqo2vLKErFppDKS+98GJMr91CIv6Ce2:hqo2OErFppDhN6Mr9Nvze2

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/2644-1-0x0000000000E60000-0x0000000000E6C000-memory.dmp	family_chaos
behavioral1/files/0x000a000000012280-5.dat	family_chaos
behavioral1/memory/2752-7-0x00000000009C0000-0x00000000009CC000-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
1924	bcdedit.exe
1984	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
1052	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\doomed.txt	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2752	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\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Saved Games\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\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\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\Pictures\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\Programs\Accessories\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\Contacts\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\Internet Explorer\Quick Launch\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\Accessories\Accessibility\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	F:\$RECYCLE.BIN\S-1-5-21-3063565911-2056067323-3330884624-1000\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\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\Searches\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini	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
1640	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
3000	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2752	svchost.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2644	2024-12-02_fa9f7699ccdb08c6ba4a9f4aa62ff64c_destroyer_wannacry.exe
2644	2024-12-02_fa9f7699ccdb08c6ba4a9f4aa62ff64c_destroyer_wannacry.exe
2644	2024-12-02_fa9f7699ccdb08c6ba4a9f4aa62ff64c_destroyer_wannacry.exe
2752	svchost.exe
2752	svchost.exe
2752	svchost.exe
2752	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2644	2024-12-02_fa9f7699ccdb08c6ba4a9f4aa62ff64c_destroyer_wannacry.exe
Token: SeDebugPrivilege	2752	svchost.exe
Token: SeBackupPrivilege	2868	vssvc.exe
Token: SeRestorePrivilege	2868	vssvc.exe
Token: SeAuditPrivilege	2868	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1004	WMIC.exe
Token: SeSecurityPrivilege	1004	WMIC.exe
Token: SeTakeOwnershipPrivilege	1004	WMIC.exe
Token: SeLoadDriverPrivilege	1004	WMIC.exe
Token: SeSystemProfilePrivilege	1004	WMIC.exe
Token: SeSystemtimePrivilege	1004	WMIC.exe
Token: SeProfSingleProcessPrivilege	1004	WMIC.exe
Token: SeIncBasePriorityPrivilege	1004	WMIC.exe
Token: SeCreatePagefilePrivilege	1004	WMIC.exe
Token: SeBackupPrivilege	1004	WMIC.exe
Token: SeRestorePrivilege	1004	WMIC.exe
Token: SeShutdownPrivilege	1004	WMIC.exe
Token: SeDebugPrivilege	1004	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1004	WMIC.exe
Token: SeRemoteShutdownPrivilege	1004	WMIC.exe
Token: SeUndockPrivilege	1004	WMIC.exe
Token: SeManageVolumePrivilege	1004	WMIC.exe
Token: 33	1004	WMIC.exe
Token: 34	1004	WMIC.exe
Token: 35	1004	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1004	WMIC.exe
Token: SeSecurityPrivilege	1004	WMIC.exe
Token: SeTakeOwnershipPrivilege	1004	WMIC.exe
Token: SeLoadDriverPrivilege	1004	WMIC.exe
Token: SeSystemProfilePrivilege	1004	WMIC.exe
Token: SeSystemtimePrivilege	1004	WMIC.exe
Token: SeProfSingleProcessPrivilege	1004	WMIC.exe
Token: SeIncBasePriorityPrivilege	1004	WMIC.exe
Token: SeCreatePagefilePrivilege	1004	WMIC.exe
Token: SeBackupPrivilege	1004	WMIC.exe
Token: SeRestorePrivilege	1004	WMIC.exe
Token: SeShutdownPrivilege	1004	WMIC.exe
Token: SeDebugPrivilege	1004	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1004	WMIC.exe
Token: SeRemoteShutdownPrivilege	1004	WMIC.exe
Token: SeUndockPrivilege	1004	WMIC.exe
Token: SeManageVolumePrivilege	1004	WMIC.exe
Token: 33	1004	WMIC.exe
Token: 34	1004	WMIC.exe
Token: 35	1004	WMIC.exe
Token: SeBackupPrivilege	936	wbengine.exe
Token: SeRestorePrivilege	936	wbengine.exe
Token: SeSecurityPrivilege	936	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2644 wrote to memory of 2752	2644	2024-12-02_fa9f7699ccdb08c6ba4a9f4aa62ff64c_destroyer_wannacry.exe	30
PID 2644 wrote to memory of 2752	2644	2024-12-02_fa9f7699ccdb08c6ba4a9f4aa62ff64c_destroyer_wannacry.exe	30
PID 2644 wrote to memory of 2752	2644	2024-12-02_fa9f7699ccdb08c6ba4a9f4aa62ff64c_destroyer_wannacry.exe	30
PID 2752 wrote to memory of 1100	2752	svchost.exe	32
PID 2752 wrote to memory of 1100	2752	svchost.exe	32
PID 2752 wrote to memory of 1100	2752	svchost.exe	32
PID 1100 wrote to memory of 1640	1100	cmd.exe	34
PID 1100 wrote to memory of 1640	1100	cmd.exe	34
PID 1100 wrote to memory of 1640	1100	cmd.exe	34
PID 1100 wrote to memory of 1004	1100	cmd.exe	37
PID 1100 wrote to memory of 1004	1100	cmd.exe	37
PID 1100 wrote to memory of 1004	1100	cmd.exe	37
PID 2752 wrote to memory of 2160	2752	svchost.exe	39
PID 2752 wrote to memory of 2160	2752	svchost.exe	39
PID 2752 wrote to memory of 2160	2752	svchost.exe	39
PID 2160 wrote to memory of 1924	2160	cmd.exe	41
PID 2160 wrote to memory of 1924	2160	cmd.exe	41
PID 2160 wrote to memory of 1924	2160	cmd.exe	41
PID 2160 wrote to memory of 1984	2160	cmd.exe	42
PID 2160 wrote to memory of 1984	2160	cmd.exe	42
PID 2160 wrote to memory of 1984	2160	cmd.exe	42
PID 2752 wrote to memory of 840	2752	svchost.exe	43
PID 2752 wrote to memory of 840	2752	svchost.exe	43
PID 2752 wrote to memory of 840	2752	svchost.exe	43
PID 840 wrote to memory of 1052	840	cmd.exe	45
PID 840 wrote to memory of 1052	840	cmd.exe	45
PID 840 wrote to memory of 1052	840	cmd.exe	45
PID 2752 wrote to memory of 3000	2752	svchost.exe	49
PID 2752 wrote to memory of 3000	2752	svchost.exe	49
PID 2752 wrote to memory of 3000	2752	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\2024-12-02_fa9f7699ccdb08c6ba4a9f4aa62ff64c_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-02_fa9f7699ccdb08c6ba4a9f4aa62ff64c_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2644
- 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)
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2752
- - 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:1100
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:1640
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1004
- - 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:2160
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1924
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1984
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:840
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:1052
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\doomed.txt
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:3000

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2868

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:936

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:2500

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:1772

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

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

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

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

Filesize
22KB

MD5
fa9f7699ccdb08c6ba4a9f4aa62ff64c

SHA1
b82759e29cecec7a0dd06c52c9259e4b24c6ff67

SHA256
c50c9a28e88dbdfc9835e3722434af2db792c66d9ce1f496b395101289990e56

SHA512
277c3eb7eb3b7de7451dc95da1103746ade6622cc66b09cb6b9e0a287dfdf5f2cdda5728619ab6c024db22ebf226af3a0232989ecef452c81fd07dcf01a5770f

Download Submit
C:\Users\Admin\Documents\doomed.txt

Filesize
63B

MD5
8ae9fb63f30ede54240b29e5d76b4c9c

SHA1
d4737987ed4fc2e3cfb0aa0c49265ba38b46d576

SHA256
27be02602b11977f540dc1f087555f0f3c85a70620018de63e427f23ce7dca96

SHA512
0e845c763998112c7075beaee0a2a576b14b12c2b850cdb5a76a6f2cdb71beaf9bb01a3a352aad02a489c15269b8ebd15717e928e1025b3f45a70813d5b2e5d7

Download Submit
memory/2644-0-0x000007FEF5173000-0x000007FEF5174000-memory.dmp

Filesize
4KB

Download
memory/2644-1-0x0000000000E60000-0x0000000000E6C000-memory.dmp

Filesize
48KB

Download
memory/2752-7-0x00000000009C0000-0x00000000009CC000-memory.dmp

Filesize
48KB

Download
memory/2752-12-0x000007FEF5170000-0x000007FEF5B5C000-memory.dmp

Filesize
9.9MB

Download
memory/2752-13-0x000007FEF5170000-0x000007FEF5B5C000-memory.dmp

Filesize
9.9MB

Download
memory/2752-465-0x000007FEF5170000-0x000007FEF5B5C000-memory.dmp

Filesize
9.9MB

Download
memory/2752-466-0x000007FEF5170000-0x000007FEF5B5C000-memory.dmp

Filesize
9.9MB

Download