chaos | 16f799a24f546df5e9aa8a44fee005b99ea34b4022a124a955bdac3660f4be82

Analysis

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

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
30/11/2024, 11:29

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General

Target

2024-11-30_c3da55d1318ba9fd34811c349d231a26_destroyer_wannacry.exe
Size

21KB
MD5

c3da55d1318ba9fd34811c349d231a26
SHA1

3b0be2263b83db8fcc0c7cf2218755edff6d3200
SHA256

16f799a24f546df5e9aa8a44fee005b99ea34b4022a124a955bdac3660f4be82
SHA512

3ecbedc46625a9e1f079878989cffd89f47b44385c3fb223f42c82cac74b682f3d2c5c902cbece43a6f8e59026060d35e1e1b66c80ddee21009d82e0caea6fe3
SSDEEP

384:T3Mg/bqo27ye3px9XOjzJmr91C+Ymaey:lqo2+e3pzOjVmr90rey

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/2756-1-0x0000000000390000-0x000000000039C000-memory.dmp	family_chaos
behavioral1/files/0x000a000000012250-5.dat	family_chaos
behavioral1/memory/2764-7-0x0000000000350000-0x000000000035C000-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
1864	bcdedit.exe
2688	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
2024	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
2764	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\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\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\Favorites\Links for United States\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\Music\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\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\Administrative Tools\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-312935884-697965778-3955649944-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\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\Public\Music\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\Desktop\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\Accessories\Accessibility\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\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\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\Maintenance\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\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\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
2400	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
908	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2764	svchost.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2756	2024-11-30_c3da55d1318ba9fd34811c349d231a26_destroyer_wannacry.exe
2756	2024-11-30_c3da55d1318ba9fd34811c349d231a26_destroyer_wannacry.exe
2756	2024-11-30_c3da55d1318ba9fd34811c349d231a26_destroyer_wannacry.exe
2764	svchost.exe
2764	svchost.exe
2764	svchost.exe
2764	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2756	2024-11-30_c3da55d1318ba9fd34811c349d231a26_destroyer_wannacry.exe
Token: SeDebugPrivilege	2764	svchost.exe
Token: SeBackupPrivilege	2124	vssvc.exe
Token: SeRestorePrivilege	2124	vssvc.exe
Token: SeAuditPrivilege	2124	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1000	WMIC.exe
Token: SeSecurityPrivilege	1000	WMIC.exe
Token: SeTakeOwnershipPrivilege	1000	WMIC.exe
Token: SeLoadDriverPrivilege	1000	WMIC.exe
Token: SeSystemProfilePrivilege	1000	WMIC.exe
Token: SeSystemtimePrivilege	1000	WMIC.exe
Token: SeProfSingleProcessPrivilege	1000	WMIC.exe
Token: SeIncBasePriorityPrivilege	1000	WMIC.exe
Token: SeCreatePagefilePrivilege	1000	WMIC.exe
Token: SeBackupPrivilege	1000	WMIC.exe
Token: SeRestorePrivilege	1000	WMIC.exe
Token: SeShutdownPrivilege	1000	WMIC.exe
Token: SeDebugPrivilege	1000	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1000	WMIC.exe
Token: SeRemoteShutdownPrivilege	1000	WMIC.exe
Token: SeUndockPrivilege	1000	WMIC.exe
Token: SeManageVolumePrivilege	1000	WMIC.exe
Token: 33	1000	WMIC.exe
Token: 34	1000	WMIC.exe
Token: 35	1000	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1000	WMIC.exe
Token: SeSecurityPrivilege	1000	WMIC.exe
Token: SeTakeOwnershipPrivilege	1000	WMIC.exe
Token: SeLoadDriverPrivilege	1000	WMIC.exe
Token: SeSystemProfilePrivilege	1000	WMIC.exe
Token: SeSystemtimePrivilege	1000	WMIC.exe
Token: SeProfSingleProcessPrivilege	1000	WMIC.exe
Token: SeIncBasePriorityPrivilege	1000	WMIC.exe
Token: SeCreatePagefilePrivilege	1000	WMIC.exe
Token: SeBackupPrivilege	1000	WMIC.exe
Token: SeRestorePrivilege	1000	WMIC.exe
Token: SeShutdownPrivilege	1000	WMIC.exe
Token: SeDebugPrivilege	1000	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1000	WMIC.exe
Token: SeRemoteShutdownPrivilege	1000	WMIC.exe
Token: SeUndockPrivilege	1000	WMIC.exe
Token: SeManageVolumePrivilege	1000	WMIC.exe
Token: 33	1000	WMIC.exe
Token: 34	1000	WMIC.exe
Token: 35	1000	WMIC.exe
Token: SeBackupPrivilege	1732	wbengine.exe
Token: SeRestorePrivilege	1732	wbengine.exe
Token: SeSecurityPrivilege	1732	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2756 wrote to memory of 2764	2756	2024-11-30_c3da55d1318ba9fd34811c349d231a26_destroyer_wannacry.exe	30
PID 2756 wrote to memory of 2764	2756	2024-11-30_c3da55d1318ba9fd34811c349d231a26_destroyer_wannacry.exe	30
PID 2756 wrote to memory of 2764	2756	2024-11-30_c3da55d1318ba9fd34811c349d231a26_destroyer_wannacry.exe	30
PID 2764 wrote to memory of 3012	2764	svchost.exe	32
PID 2764 wrote to memory of 3012	2764	svchost.exe	32
PID 2764 wrote to memory of 3012	2764	svchost.exe	32
PID 3012 wrote to memory of 2400	3012	cmd.exe	34
PID 3012 wrote to memory of 2400	3012	cmd.exe	34
PID 3012 wrote to memory of 2400	3012	cmd.exe	34
PID 3012 wrote to memory of 1000	3012	cmd.exe	37
PID 3012 wrote to memory of 1000	3012	cmd.exe	37
PID 3012 wrote to memory of 1000	3012	cmd.exe	37
PID 2764 wrote to memory of 1800	2764	svchost.exe	39
PID 2764 wrote to memory of 1800	2764	svchost.exe	39
PID 2764 wrote to memory of 1800	2764	svchost.exe	39
PID 1800 wrote to memory of 1864	1800	cmd.exe	41
PID 1800 wrote to memory of 1864	1800	cmd.exe	41
PID 1800 wrote to memory of 1864	1800	cmd.exe	41
PID 1800 wrote to memory of 2688	1800	cmd.exe	42
PID 1800 wrote to memory of 2688	1800	cmd.exe	42
PID 1800 wrote to memory of 2688	1800	cmd.exe	42
PID 2764 wrote to memory of 1628	2764	svchost.exe	43
PID 2764 wrote to memory of 1628	2764	svchost.exe	43
PID 2764 wrote to memory of 1628	2764	svchost.exe	43
PID 1628 wrote to memory of 2024	1628	cmd.exe	45
PID 1628 wrote to memory of 2024	1628	cmd.exe	45
PID 1628 wrote to memory of 2024	1628	cmd.exe	45
PID 2764 wrote to memory of 908	2764	svchost.exe	49
PID 2764 wrote to memory of 908	2764	svchost.exe	49
PID 2764 wrote to memory of 908	2764	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\2024-11-30_c3da55d1318ba9fd34811c349d231a26_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-30_c3da55d1318ba9fd34811c349d231a26_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2756
- 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:2764
- - 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:3012
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2400
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1000
- - 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:1800
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1864
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2688
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1628
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:2024
- - 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:908

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2124

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1732

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:2308

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:2300

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
21KB

MD5
c3da55d1318ba9fd34811c349d231a26

SHA1
3b0be2263b83db8fcc0c7cf2218755edff6d3200

SHA256
16f799a24f546df5e9aa8a44fee005b99ea34b4022a124a955bdac3660f4be82

SHA512
3ecbedc46625a9e1f079878989cffd89f47b44385c3fb223f42c82cac74b682f3d2c5c902cbece43a6f8e59026060d35e1e1b66c80ddee21009d82e0caea6fe3

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

Filesize
13B

MD5
6642d228a877a083cabb3c1ba59358c6

SHA1
fc7ec9e57bea338f0c9f21816aefd86afa548574

SHA256
2aa961014af3ebabacd01e31f283fcc08b428714448c561819ea6c3b8724fc27

SHA512
66294d6eb6748113e651a2be328fee0bf109adc1f09a73c9a836ceea66f605a35a43f34624f5fb9f181730d981ebb95ac590aa91264daed7e79a2d09f97a1513

Download Submit
memory/2756-0-0x000007FEF5573000-0x000007FEF5574000-memory.dmp

Filesize
4KB

Download
memory/2756-1-0x0000000000390000-0x000000000039C000-memory.dmp

Filesize
48KB

Download
memory/2764-7-0x0000000000350000-0x000000000035C000-memory.dmp

Filesize
48KB

Download
memory/2764-9-0x000007FEF5570000-0x000007FEF5F5C000-memory.dmp

Filesize
9.9MB

Download
memory/2764-10-0x000007FEF5570000-0x000007FEF5F5C000-memory.dmp

Filesize
9.9MB

Download
memory/2764-519-0x000007FEF5570000-0x000007FEF5F5C000-memory.dmp

Filesize
9.9MB

Download