chaos | 5404595684deb101a7d8d6a11c104dc1401151149f69cb9a60ebb223b6f7e5b2

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
19-09-2024 03:35

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General

Target

2024-09-19_a264ca73aaced0a81a0b7fa14bc201f4_chaos_destroyer_wannacry.exe
Size

23KB
MD5

a264ca73aaced0a81a0b7fa14bc201f4
SHA1

77a1624cbc6d2d5066f7e23b42f05fd2703fb394
SHA256

5404595684deb101a7d8d6a11c104dc1401151149f69cb9a60ebb223b6f7e5b2
SHA512

d141ce0021b3352a79eb1401401f072e25fa06773ed567b9922d99967740e07a88e5d5b1daa77a61d9f8a53b51a36441c8e3c1a00a25de203ad05d82b1929ed4
SSDEEP

384:y3Mg/bqo21q5D+WVZfpKkLOjXJ/r91CCAiMbdLej:Iqo2Sy6ptOjZ/r9BAiMblej

Score

10^/10

chaos defense_evasion evasion execution impact ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\Documents\READ_THIS.txt

Family

chaos

Ransom Note

----> Chaos is multi language ransomware. Translate your note to any language <---- All of your files have been encrypted and stolen Your computer was infected with a ransomware virus. Your files have been encrypted and stolen 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.The price for the software is $150. 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: 0.00240923 BTC Bitcoin Address: bc1q5dct32xckc9352ze647cf8lsv0vjaldp9vpvk6

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/2820-1-0x0000000000940000-0x000000000094C000-memory.dmp	family_chaos
behavioral1/files/0x0007000000012117-5.dat	family_chaos
behavioral1/memory/2848-8-0x0000000000E40000-0x0000000000E4C000-memory.dmp	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
2484	bcdedit.exe
2928	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
2924	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_THIS.txt	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2848	svchost.exe

Reads user/profile data of web browsers 2 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

Drops desktop.ini file(s) 34 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Links\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-2872745919-2748461613-2989606286-1000\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\Libraries\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\Documents\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\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\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\Accessories\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\Music\Sample Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\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\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\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\AppData\Roaming\Microsoft\Windows\Recent\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\Videos\Sample Videos\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\Desktop\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\Favorites\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\Accessibility\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\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

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
2180	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2360	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2848	svchost.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2820	2024-09-19_a264ca73aaced0a81a0b7fa14bc201f4_chaos_destroyer_wannacry.exe
2820	2024-09-19_a264ca73aaced0a81a0b7fa14bc201f4_chaos_destroyer_wannacry.exe
2820	2024-09-19_a264ca73aaced0a81a0b7fa14bc201f4_chaos_destroyer_wannacry.exe
2848	svchost.exe
2848	svchost.exe
2848	svchost.exe
2848	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2820	2024-09-19_a264ca73aaced0a81a0b7fa14bc201f4_chaos_destroyer_wannacry.exe
Token: SeDebugPrivilege	2848	svchost.exe
Token: SeBackupPrivilege	2588	vssvc.exe
Token: SeRestorePrivilege	2588	vssvc.exe
Token: SeAuditPrivilege	2588	vssvc.exe
Token: SeIncreaseQuotaPrivilege	2800	WMIC.exe
Token: SeSecurityPrivilege	2800	WMIC.exe
Token: SeTakeOwnershipPrivilege	2800	WMIC.exe
Token: SeLoadDriverPrivilege	2800	WMIC.exe
Token: SeSystemProfilePrivilege	2800	WMIC.exe
Token: SeSystemtimePrivilege	2800	WMIC.exe
Token: SeProfSingleProcessPrivilege	2800	WMIC.exe
Token: SeIncBasePriorityPrivilege	2800	WMIC.exe
Token: SeCreatePagefilePrivilege	2800	WMIC.exe
Token: SeBackupPrivilege	2800	WMIC.exe
Token: SeRestorePrivilege	2800	WMIC.exe
Token: SeShutdownPrivilege	2800	WMIC.exe
Token: SeDebugPrivilege	2800	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2800	WMIC.exe
Token: SeRemoteShutdownPrivilege	2800	WMIC.exe
Token: SeUndockPrivilege	2800	WMIC.exe
Token: SeManageVolumePrivilege	2800	WMIC.exe
Token: 33	2800	WMIC.exe
Token: 34	2800	WMIC.exe
Token: 35	2800	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2800	WMIC.exe
Token: SeSecurityPrivilege	2800	WMIC.exe
Token: SeTakeOwnershipPrivilege	2800	WMIC.exe
Token: SeLoadDriverPrivilege	2800	WMIC.exe
Token: SeSystemProfilePrivilege	2800	WMIC.exe
Token: SeSystemtimePrivilege	2800	WMIC.exe
Token: SeProfSingleProcessPrivilege	2800	WMIC.exe
Token: SeIncBasePriorityPrivilege	2800	WMIC.exe
Token: SeCreatePagefilePrivilege	2800	WMIC.exe
Token: SeBackupPrivilege	2800	WMIC.exe
Token: SeRestorePrivilege	2800	WMIC.exe
Token: SeShutdownPrivilege	2800	WMIC.exe
Token: SeDebugPrivilege	2800	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2800	WMIC.exe
Token: SeRemoteShutdownPrivilege	2800	WMIC.exe
Token: SeUndockPrivilege	2800	WMIC.exe
Token: SeManageVolumePrivilege	2800	WMIC.exe
Token: 33	2800	WMIC.exe
Token: 34	2800	WMIC.exe
Token: 35	2800	WMIC.exe
Token: SeBackupPrivilege	2280	wbengine.exe
Token: SeRestorePrivilege	2280	wbengine.exe
Token: SeSecurityPrivilege	2280	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2820 wrote to memory of 2848	2820	2024-09-19_a264ca73aaced0a81a0b7fa14bc201f4_chaos_destroyer_wannacry.exe	30
PID 2820 wrote to memory of 2848	2820	2024-09-19_a264ca73aaced0a81a0b7fa14bc201f4_chaos_destroyer_wannacry.exe	30
PID 2820 wrote to memory of 2848	2820	2024-09-19_a264ca73aaced0a81a0b7fa14bc201f4_chaos_destroyer_wannacry.exe	30
PID 2848 wrote to memory of 1236	2848	svchost.exe	32
PID 2848 wrote to memory of 1236	2848	svchost.exe	32
PID 2848 wrote to memory of 1236	2848	svchost.exe	32
PID 1236 wrote to memory of 2180	1236	cmd.exe	34
PID 1236 wrote to memory of 2180	1236	cmd.exe	34
PID 1236 wrote to memory of 2180	1236	cmd.exe	34
PID 1236 wrote to memory of 2800	1236	cmd.exe	37
PID 1236 wrote to memory of 2800	1236	cmd.exe	37
PID 1236 wrote to memory of 2800	1236	cmd.exe	37
PID 2848 wrote to memory of 1932	2848	svchost.exe	39
PID 2848 wrote to memory of 1932	2848	svchost.exe	39
PID 2848 wrote to memory of 1932	2848	svchost.exe	39
PID 1932 wrote to memory of 2484	1932	cmd.exe	41
PID 1932 wrote to memory of 2484	1932	cmd.exe	41
PID 1932 wrote to memory of 2484	1932	cmd.exe	41
PID 1932 wrote to memory of 2928	1932	cmd.exe	42
PID 1932 wrote to memory of 2928	1932	cmd.exe	42
PID 1932 wrote to memory of 2928	1932	cmd.exe	42
PID 2848 wrote to memory of 2096	2848	svchost.exe	43
PID 2848 wrote to memory of 2096	2848	svchost.exe	43
PID 2848 wrote to memory of 2096	2848	svchost.exe	43
PID 2096 wrote to memory of 2924	2096	cmd.exe	45
PID 2096 wrote to memory of 2924	2096	cmd.exe	45
PID 2096 wrote to memory of 2924	2096	cmd.exe	45
PID 2848 wrote to memory of 2360	2848	svchost.exe	49
PID 2848 wrote to memory of 2360	2848	svchost.exe	49
PID 2848 wrote to memory of 2360	2848	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\2024-09-19_a264ca73aaced0a81a0b7fa14bc201f4_chaos_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-19_a264ca73aaced0a81a0b7fa14bc201f4_chaos_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2820
- 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:2848
- - 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:1236
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2180
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2800
- - 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:1932
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2484
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2928
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2096
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:2924
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\READ_THIS.txt
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:2360

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2588

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2280

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:2740

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:868

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

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
23KB

MD5
a264ca73aaced0a81a0b7fa14bc201f4

SHA1
77a1624cbc6d2d5066f7e23b42f05fd2703fb394

SHA256
5404595684deb101a7d8d6a11c104dc1401151149f69cb9a60ebb223b6f7e5b2

SHA512
d141ce0021b3352a79eb1401401f072e25fa06773ed567b9922d99967740e07a88e5d5b1daa77a61d9f8a53b51a36441c8e3c1a00a25de203ad05d82b1929ed4

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

Filesize
985B

MD5
46839c94712706c9b4bea9c0b5f89693

SHA1
af8af5265aa72bd8c30c63d7999f7f52c738b9ff

SHA256
4afb727589a35a9ee9422855723f7e8a6b95a09e72d1683c57f92b3e3e0e9ca6

SHA512
afd0bae86ab302883f83f1ab0534fb6a49d45a155e7320958387dc5a2721f854c6cd34f546931ea3b8da932b8f8bb13e0869d42b41684671cd606fb4023db382

Download Submit
memory/2820-0-0x000007FEF5433000-0x000007FEF5434000-memory.dmp

Filesize
4KB

Download
memory/2820-1-0x0000000000940000-0x000000000094C000-memory.dmp

Filesize
48KB

Download
memory/2848-7-0x000007FEF4A43000-0x000007FEF4A44000-memory.dmp

Filesize
4KB

Download
memory/2848-8-0x0000000000E40000-0x0000000000E4C000-memory.dmp

Filesize
48KB

Download
memory/2848-34-0x000007FEF4A40000-0x000007FEF542C000-memory.dmp

Filesize
9.9MB

Download
memory/2848-435-0x000007FEF4A43000-0x000007FEF4A44000-memory.dmp

Filesize
4KB

Download
memory/2848-436-0x000007FEF4A40000-0x000007FEF542C000-memory.dmp

Filesize
9.9MB

Download