chaos | 655af83c416e54c0033283718dbc60d3896e3dc46abc3c514f7584e09f169d6e

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
01-10-2024 06:29

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General

Target

2024-10-01_72bb11e1799d5dcb0b9ae6c2750f923d_chaos_destroyer_wannacry.exe
Size

23KB
MD5

72bb11e1799d5dcb0b9ae6c2750f923d
SHA1

c9f45baac0cddc65eeb7b412c4f5b4ac397e3ef2
SHA256

655af83c416e54c0033283718dbc60d3896e3dc46abc3c514f7584e09f169d6e
SHA512

af7673f779b0f9dc70baf3a3744751df893b43645339e0437124e7ff9e2374d62da350050e319e2e68750265542b017c00bbaa96ed7a7ccd73dab8d8d16647bd
SSDEEP

384:G3Mg/bqo2dcxtivp+4ZobVJkGr91C6xb5Beu:0qo2AtMpjqTLr9BxbXeu

Score

10^/10

chaos evasion ransomware spyware stealer

Malware Config

Extracted

Path

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

Family

chaos

Ransom Note

----> Chaos is multi language ransomware. Translate your note to any language <---- All of your files have been encrypted Your computer was infected with a ransomware virus. 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.The price for the software is $1,500. 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: 0.1473766 BTC Bitcoin Address: bc1qlnzcep4l4ac0ttdrq7awxev9ehu465f2vpt9x0

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/2136-1-0x0000000000130000-0x000000000013C000-memory.dmp	family_chaos
behavioral1/memory/2716-7-0x00000000003B0000-0x00000000003BC000-memory.dmp	family_chaos
behavioral1/files/0x000b000000012259-6.dat	family_chaos

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
1896	bcdedit.exe
2144	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
2956	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
2716	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\Searches\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	C:\Users\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\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\Libraries\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-3533259084-2542256011-65585152-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\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\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\Music\Sample 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\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\Public\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\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\Pictures\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\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\Internet Explorer\Quick Launch\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\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\Favorites\Links\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\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\Pictures\Sample Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	svchost.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1512	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2716	svchost.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2136	2024-10-01_72bb11e1799d5dcb0b9ae6c2750f923d_chaos_destroyer_wannacry.exe
2136	2024-10-01_72bb11e1799d5dcb0b9ae6c2750f923d_chaos_destroyer_wannacry.exe
2136	2024-10-01_72bb11e1799d5dcb0b9ae6c2750f923d_chaos_destroyer_wannacry.exe
2716	svchost.exe
2716	svchost.exe
2716	svchost.exe
2716	svchost.exe
2716	svchost.exe
2716	svchost.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2136	2024-10-01_72bb11e1799d5dcb0b9ae6c2750f923d_chaos_destroyer_wannacry.exe
Token: SeDebugPrivilege	2716	svchost.exe
Token: SeBackupPrivilege	2696	wbengine.exe
Token: SeRestorePrivilege	2696	wbengine.exe
Token: SeSecurityPrivilege	2696	wbengine.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2136 wrote to memory of 2716	2136	2024-10-01_72bb11e1799d5dcb0b9ae6c2750f923d_chaos_destroyer_wannacry.exe	30
PID 2136 wrote to memory of 2716	2136	2024-10-01_72bb11e1799d5dcb0b9ae6c2750f923d_chaos_destroyer_wannacry.exe	30
PID 2136 wrote to memory of 2716	2136	2024-10-01_72bb11e1799d5dcb0b9ae6c2750f923d_chaos_destroyer_wannacry.exe	30
PID 2716 wrote to memory of 1080	2716	svchost.exe	32
PID 2716 wrote to memory of 1080	2716	svchost.exe	32
PID 2716 wrote to memory of 1080	2716	svchost.exe	32
PID 1080 wrote to memory of 1896	1080	cmd.exe	34
PID 1080 wrote to memory of 1896	1080	cmd.exe	34
PID 1080 wrote to memory of 1896	1080	cmd.exe	34
PID 1080 wrote to memory of 2144	1080	cmd.exe	35
PID 1080 wrote to memory of 2144	1080	cmd.exe	35
PID 1080 wrote to memory of 2144	1080	cmd.exe	35
PID 2716 wrote to memory of 2572	2716	svchost.exe	36
PID 2716 wrote to memory of 2572	2716	svchost.exe	36
PID 2716 wrote to memory of 2572	2716	svchost.exe	36
PID 2572 wrote to memory of 2956	2572	cmd.exe	38
PID 2572 wrote to memory of 2956	2572	cmd.exe	38
PID 2572 wrote to memory of 2956	2572	cmd.exe	38
PID 2716 wrote to memory of 1512	2716	svchost.exe	42
PID 2716 wrote to memory of 1512	2716	svchost.exe	42
PID 2716 wrote to memory of 1512	2716	svchost.exe	42

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

C:\Users\Admin\AppData\Local\Temp\2024-10-01_72bb11e1799d5dcb0b9ae6c2750f923d_chaos_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-01_72bb11e1799d5dcb0b9ae6c2750f923d_chaos_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2136
- 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:2716
- - 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:1080
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1896
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2144
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2572
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:2956
- - 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:1512

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2696

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:2948

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:2008

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Privilege Escalation

Defense Evasion

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
23KB

MD5
72bb11e1799d5dcb0b9ae6c2750f923d

SHA1
c9f45baac0cddc65eeb7b412c4f5b4ac397e3ef2

SHA256
655af83c416e54c0033283718dbc60d3896e3dc46abc3c514f7584e09f169d6e

SHA512
af7673f779b0f9dc70baf3a3744751df893b43645339e0437124e7ff9e2374d62da350050e319e2e68750265542b017c00bbaa96ed7a7ccd73dab8d8d16647bd

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

Filesize
964B

MD5
4217b8b83ce3c3f70029a056546f8fd0

SHA1
487cdb5733d073a0427418888e8f7070fe782a03

SHA256
7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121

SHA512
2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740

Download Submit
memory/2136-0-0x000007FEF5883000-0x000007FEF5884000-memory.dmp

Filesize
4KB

Download
memory/2136-1-0x0000000000130000-0x000000000013C000-memory.dmp

Filesize
48KB

Download
memory/2716-7-0x00000000003B0000-0x00000000003BC000-memory.dmp

Filesize
48KB

Download
memory/2716-9-0x000007FEF5880000-0x000007FEF626C000-memory.dmp

Filesize
9.9MB

Download
memory/2716-10-0x000007FEF5880000-0x000007FEF626C000-memory.dmp

Filesize
9.9MB

Download
memory/2716-446-0x000007FEF5880000-0x000007FEF626C000-memory.dmp

Filesize
9.9MB

Download