chaos | bda399f853180c703a7329c66dd19fe620dc533edd7444a4844f25db07bc4c5b

Analysis

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

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07-12-2024 17:21

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General

Target

2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe
Size

22KB
MD5

81da4689d58474d5628687d0c0f80247
SHA1

e665e68f8f5525891a1f80f1e11005a9791747c3
SHA256

bda399f853180c703a7329c66dd19fe620dc533edd7444a4844f25db07bc4c5b
SHA512

40dfe5b0160af540c0773d30d6a4cca6f8fdb5e76bf03b706edbb8d1e597b46847594802ab82743cb21298751333f590163ade9a9b23f34b1ce9aa0a994ad04f
SSDEEP

384:c3MLWHn3kI3fbLR5LZrdpRVgjudJ6r91Crxb1tQeP:0n3kIzt9tdpRmj+6r9SxbkeP

Score

10^/10

chaos defense_evasion evasion execution impact ransomware spyware stealer

Malware Config

Extracted

Path

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

Ransom Note

----> Translate your note to any language <---- All of your files have been encrypted Your computer was Fucked. Your files have been encrypted and you won't be able to decrypt them without our help.What can I do to get my files back?You can buy our special decryption software, this software will allow you to recover all of your data and remove the ransomware from your computer. Payment can be made in Bitcoin only. How do I pay, where do I get Bitcoin? Purchasing Bitcoin varies from country to country, you are best advised to do a quick google search yourself to find out how to buy Bitcoin. Many of our customers have reported these sites to be fast and reliable: Coinmama - hxxps://www.coinmama.com Bitpanda - hxxps://www.bitpanda.com Payment informationAmount: 0,0012 BTC Bitcoin Address: 1MCrfrWne7m1KLysxkoUv617djCB3y9ZjZ

Wallets

1MCrfrWne7m1KLysxkoUv617djCB3y9ZjZ

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/2936-1-0x0000000001170000-0x000000000117C000-memory.dmp	family_chaos
behavioral1/files/0x0009000000012281-5.dat	family_chaos
behavioral1/memory/1884-7-0x00000000000F0000-0x00000000000FC000-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
2780	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
2476	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
1884	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\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\Sample Music\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-1488793075-819845221-1497111674-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\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\Start Menu\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\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\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\Videos\Sample Videos\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\Links\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\Windows\Recent\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\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\Public\Pictures\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\Windows\Libraries\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\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\Admin\Favorites\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\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\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
2716	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1732	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1884	svchost.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2936	2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe
2936	2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe
2936	2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe
1884	svchost.exe
1884	svchost.exe
1884	svchost.exe
1884	svchost.exe
1884	svchost.exe
1884	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2936	2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe
Token: SeDebugPrivilege	1884	svchost.exe
Token: SeBackupPrivilege	2620	vssvc.exe
Token: SeRestorePrivilege	2620	vssvc.exe
Token: SeAuditPrivilege	2620	vssvc.exe
Token: SeIncreaseQuotaPrivilege	2892	WMIC.exe
Token: SeSecurityPrivilege	2892	WMIC.exe
Token: SeTakeOwnershipPrivilege	2892	WMIC.exe
Token: SeLoadDriverPrivilege	2892	WMIC.exe
Token: SeSystemProfilePrivilege	2892	WMIC.exe
Token: SeSystemtimePrivilege	2892	WMIC.exe
Token: SeProfSingleProcessPrivilege	2892	WMIC.exe
Token: SeIncBasePriorityPrivilege	2892	WMIC.exe
Token: SeCreatePagefilePrivilege	2892	WMIC.exe
Token: SeBackupPrivilege	2892	WMIC.exe
Token: SeRestorePrivilege	2892	WMIC.exe
Token: SeShutdownPrivilege	2892	WMIC.exe
Token: SeDebugPrivilege	2892	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2892	WMIC.exe
Token: SeRemoteShutdownPrivilege	2892	WMIC.exe
Token: SeUndockPrivilege	2892	WMIC.exe
Token: SeManageVolumePrivilege	2892	WMIC.exe
Token: 33	2892	WMIC.exe
Token: 34	2892	WMIC.exe
Token: 35	2892	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2892	WMIC.exe
Token: SeSecurityPrivilege	2892	WMIC.exe
Token: SeTakeOwnershipPrivilege	2892	WMIC.exe
Token: SeLoadDriverPrivilege	2892	WMIC.exe
Token: SeSystemProfilePrivilege	2892	WMIC.exe
Token: SeSystemtimePrivilege	2892	WMIC.exe
Token: SeProfSingleProcessPrivilege	2892	WMIC.exe
Token: SeIncBasePriorityPrivilege	2892	WMIC.exe
Token: SeCreatePagefilePrivilege	2892	WMIC.exe
Token: SeBackupPrivilege	2892	WMIC.exe
Token: SeRestorePrivilege	2892	WMIC.exe
Token: SeShutdownPrivilege	2892	WMIC.exe
Token: SeDebugPrivilege	2892	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2892	WMIC.exe
Token: SeRemoteShutdownPrivilege	2892	WMIC.exe
Token: SeUndockPrivilege	2892	WMIC.exe
Token: SeManageVolumePrivilege	2892	WMIC.exe
Token: 33	2892	WMIC.exe
Token: 34	2892	WMIC.exe
Token: 35	2892	WMIC.exe
Token: SeBackupPrivilege	2700	wbengine.exe
Token: SeRestorePrivilege	2700	wbengine.exe
Token: SeSecurityPrivilege	2700	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2936 wrote to memory of 1884	2936	2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe	30
PID 2936 wrote to memory of 1884	2936	2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe	30
PID 2936 wrote to memory of 1884	2936	2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe	30
PID 1884 wrote to memory of 2408	1884	svchost.exe	31
PID 1884 wrote to memory of 2408	1884	svchost.exe	31
PID 1884 wrote to memory of 2408	1884	svchost.exe	31
PID 2408 wrote to memory of 2716	2408	cmd.exe	33
PID 2408 wrote to memory of 2716	2408	cmd.exe	33
PID 2408 wrote to memory of 2716	2408	cmd.exe	33
PID 2408 wrote to memory of 2892	2408	cmd.exe	37
PID 2408 wrote to memory of 2892	2408	cmd.exe	37
PID 2408 wrote to memory of 2892	2408	cmd.exe	37
PID 1884 wrote to memory of 3020	1884	svchost.exe	39
PID 1884 wrote to memory of 3020	1884	svchost.exe	39
PID 1884 wrote to memory of 3020	1884	svchost.exe	39
PID 3020 wrote to memory of 2780	3020	cmd.exe	41
PID 3020 wrote to memory of 2780	3020	cmd.exe	41
PID 3020 wrote to memory of 2780	3020	cmd.exe	41
PID 3020 wrote to memory of 2920	3020	cmd.exe	42
PID 3020 wrote to memory of 2920	3020	cmd.exe	42
PID 3020 wrote to memory of 2920	3020	cmd.exe	42
PID 1884 wrote to memory of 2552	1884	svchost.exe	43
PID 1884 wrote to memory of 2552	1884	svchost.exe	43
PID 1884 wrote to memory of 2552	1884	svchost.exe	43
PID 2552 wrote to memory of 2476	2552	cmd.exe	45
PID 2552 wrote to memory of 2476	2552	cmd.exe	45
PID 2552 wrote to memory of 2476	2552	cmd.exe	45
PID 1884 wrote to memory of 1732	1884	svchost.exe	49
PID 1884 wrote to memory of 1732	1884	svchost.exe	49
PID 1884 wrote to memory of 1732	1884	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\2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2936
- 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:1884
- - 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:2408
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2716
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2892
- - 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:3020
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2780
  - - 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:2552
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:2476
- - 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:1732

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2620

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2700

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:864

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:3024

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
81da4689d58474d5628687d0c0f80247

SHA1
e665e68f8f5525891a1f80f1e11005a9791747c3

SHA256
bda399f853180c703a7329c66dd19fe620dc533edd7444a4844f25db07bc4c5b

SHA512
40dfe5b0160af540c0773d30d6a4cca6f8fdb5e76bf03b706edbb8d1e597b46847594802ab82743cb21298751333f590163ade9a9b23f34b1ce9aa0a994ad04f

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

Filesize
854B

MD5
30dbd9beaecba46ffb68b2ba7167542c

SHA1
403bbce281174af6acf794be6b5cd83e864ba42a

SHA256
7c72579a3d1e9c78e0385c6ceb96e54411b5be12e5eb9b9386878c6356d8a506

SHA512
71f9036e9b637ddb8c1025f5df0a8c631bfb13823ab4c3f70b8b1d854610ab1053d0a15cacee2f84e93ad21428e3dbe34fe294ebbaed8939c2e5549526a5d920

Download Submit
memory/1884-7-0x00000000000F0000-0x00000000000FC000-memory.dmp

Filesize
48KB

Download
memory/1884-16-0x000007FEF53D0000-0x000007FEF5DBC000-memory.dmp

Filesize
9.9MB

Download
memory/1884-72-0x000007FEF53D0000-0x000007FEF5DBC000-memory.dmp

Filesize
9.9MB

Download
memory/1884-73-0x000007FEF53D0000-0x000007FEF5DBC000-memory.dmp

Filesize
9.9MB

Download
memory/2936-0-0x000007FEF53D3000-0x000007FEF53D4000-memory.dmp

Filesize
4KB

Download
memory/2936-1-0x0000000001170000-0x000000000117C000-memory.dmp

Filesize
48KB

Download