chaos | d418ca84ca4bb7db72d2b00f8d6225a57909e02f712c7b0e2d9cefb2e18d0737

Resubmissions

13-07-2024 09:54

240713-lxbx6swdmm 10

13-07-2024 09:50

240713-lvbvdsyapd 10

13-07-2024 09:46

240713-lr1dksyajd 10

Analysis

max time kernel
840s
max time network
842s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
13-07-2024 09:50

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General

Target

27c9f44e0c5de68792b684355a68ad83eba89cbe46cc9cf3a6efeb448c9f39d6.exe
Size

352KB
MD5

b431bf2649aee55b729f1668a7bc4b12
SHA1

f618c191798cd8a809120bbf6b09ff79d8877138
SHA256

27c9f44e0c5de68792b684355a68ad83eba89cbe46cc9cf3a6efeb448c9f39d6
SHA512

b31ac84b8d41c4d77536763acf3daa75c437b62e792329f232892e7939b35ed8731f3aaaa3e406cf1bf6121a64c920dd03df4da07847debdd2caae3dc70ed544
SSDEEP

3072:L3kLEir9ihicEQ23lcjxXedA3MYRjuOGK2OIcVtkzuwOYHYHYN4YHYHYcSuCexyM:Ur9ikcL2mj4d6riOZ+qSHej/Kd+bN

Score

10^/10

chaos defense_evasion evasion execution impact ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\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 $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 Binance - https://www.binance.com ,mexc and more. Payment informationAmount: 0.0067 BTC Bitcoin Address: bc1qkmfndcprala97f79g7j89q24qs9fs63qdeva69

URLs

https://www.binance.com

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 3 IoCs

resource	yara_rule
behavioral7/memory/2792-1-0x0000000000B50000-0x0000000000BAE000-memory.dmp	family_chaos
behavioral7/files/0x0004000000004ed7-6.dat	family_chaos
behavioral7/memory/532-7-0x00000000011E0000-0x000000000123E000-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
2248	bcdedit.exe
2208	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
1516	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
532	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\Public\Videos\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\Libraries\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\Maintenance\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\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\User Pinned\TaskBar\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Saved Games\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\Admin\Favorites\Links\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\Accessibility\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\Windows\Start Menu\Programs\Administrative Tools\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\Public\Music\Sample Music\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-3450744190-3404161390-554719085-1000\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\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\Public\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\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\Internet Explorer\Quick Launch\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\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\SendTo\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	svchost.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\sy5sbduvw.jpg"	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
2600	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
920	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
532	svchost.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2792	27c9f44e0c5de68792b684355a68ad83eba89cbe46cc9cf3a6efeb448c9f39d6.exe
2792	27c9f44e0c5de68792b684355a68ad83eba89cbe46cc9cf3a6efeb448c9f39d6.exe
2792	27c9f44e0c5de68792b684355a68ad83eba89cbe46cc9cf3a6efeb448c9f39d6.exe
532	svchost.exe
532	svchost.exe
532	svchost.exe
532	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2792	27c9f44e0c5de68792b684355a68ad83eba89cbe46cc9cf3a6efeb448c9f39d6.exe
Token: SeDebugPrivilege	532	svchost.exe
Token: SeBackupPrivilege	2184	vssvc.exe
Token: SeRestorePrivilege	2184	vssvc.exe
Token: SeAuditPrivilege	2184	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1156	WMIC.exe
Token: SeSecurityPrivilege	1156	WMIC.exe
Token: SeTakeOwnershipPrivilege	1156	WMIC.exe
Token: SeLoadDriverPrivilege	1156	WMIC.exe
Token: SeSystemProfilePrivilege	1156	WMIC.exe
Token: SeSystemtimePrivilege	1156	WMIC.exe
Token: SeProfSingleProcessPrivilege	1156	WMIC.exe
Token: SeIncBasePriorityPrivilege	1156	WMIC.exe
Token: SeCreatePagefilePrivilege	1156	WMIC.exe
Token: SeBackupPrivilege	1156	WMIC.exe
Token: SeRestorePrivilege	1156	WMIC.exe
Token: SeShutdownPrivilege	1156	WMIC.exe
Token: SeDebugPrivilege	1156	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1156	WMIC.exe
Token: SeRemoteShutdownPrivilege	1156	WMIC.exe
Token: SeUndockPrivilege	1156	WMIC.exe
Token: SeManageVolumePrivilege	1156	WMIC.exe
Token: 33	1156	WMIC.exe
Token: 34	1156	WMIC.exe
Token: 35	1156	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1156	WMIC.exe
Token: SeSecurityPrivilege	1156	WMIC.exe
Token: SeTakeOwnershipPrivilege	1156	WMIC.exe
Token: SeLoadDriverPrivilege	1156	WMIC.exe
Token: SeSystemProfilePrivilege	1156	WMIC.exe
Token: SeSystemtimePrivilege	1156	WMIC.exe
Token: SeProfSingleProcessPrivilege	1156	WMIC.exe
Token: SeIncBasePriorityPrivilege	1156	WMIC.exe
Token: SeCreatePagefilePrivilege	1156	WMIC.exe
Token: SeBackupPrivilege	1156	WMIC.exe
Token: SeRestorePrivilege	1156	WMIC.exe
Token: SeShutdownPrivilege	1156	WMIC.exe
Token: SeDebugPrivilege	1156	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1156	WMIC.exe
Token: SeRemoteShutdownPrivilege	1156	WMIC.exe
Token: SeUndockPrivilege	1156	WMIC.exe
Token: SeManageVolumePrivilege	1156	WMIC.exe
Token: 33	1156	WMIC.exe
Token: 34	1156	WMIC.exe
Token: 35	1156	WMIC.exe
Token: SeBackupPrivilege	2960	wbengine.exe
Token: SeRestorePrivilege	2960	wbengine.exe
Token: SeSecurityPrivilege	2960	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2792 wrote to memory of 532	2792	27c9f44e0c5de68792b684355a68ad83eba89cbe46cc9cf3a6efeb448c9f39d6.exe	31
PID 2792 wrote to memory of 532	2792	27c9f44e0c5de68792b684355a68ad83eba89cbe46cc9cf3a6efeb448c9f39d6.exe	31
PID 2792 wrote to memory of 532	2792	27c9f44e0c5de68792b684355a68ad83eba89cbe46cc9cf3a6efeb448c9f39d6.exe	31
PID 532 wrote to memory of 2544	532	svchost.exe	32
PID 532 wrote to memory of 2544	532	svchost.exe	32
PID 532 wrote to memory of 2544	532	svchost.exe	32
PID 2544 wrote to memory of 2600	2544	cmd.exe	34
PID 2544 wrote to memory of 2600	2544	cmd.exe	34
PID 2544 wrote to memory of 2600	2544	cmd.exe	34
PID 2544 wrote to memory of 1156	2544	cmd.exe	38
PID 2544 wrote to memory of 1156	2544	cmd.exe	38
PID 2544 wrote to memory of 1156	2544	cmd.exe	38
PID 532 wrote to memory of 2380	532	svchost.exe	40
PID 532 wrote to memory of 2380	532	svchost.exe	40
PID 532 wrote to memory of 2380	532	svchost.exe	40
PID 2380 wrote to memory of 2248	2380	cmd.exe	42
PID 2380 wrote to memory of 2248	2380	cmd.exe	42
PID 2380 wrote to memory of 2248	2380	cmd.exe	42
PID 2380 wrote to memory of 2208	2380	cmd.exe	43
PID 2380 wrote to memory of 2208	2380	cmd.exe	43
PID 2380 wrote to memory of 2208	2380	cmd.exe	43
PID 532 wrote to memory of 2200	532	svchost.exe	44
PID 532 wrote to memory of 2200	532	svchost.exe	44
PID 532 wrote to memory of 2200	532	svchost.exe	44
PID 2200 wrote to memory of 1516	2200	cmd.exe	46
PID 2200 wrote to memory of 1516	2200	cmd.exe	46
PID 2200 wrote to memory of 1516	2200	cmd.exe	46
PID 532 wrote to memory of 920	532	svchost.exe	50
PID 532 wrote to memory of 920	532	svchost.exe	50
PID 532 wrote to memory of 920	532	svchost.exe	50

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\27c9f44e0c5de68792b684355a68ad83eba89cbe46cc9cf3a6efeb448c9f39d6.exe
"C:\Users\Admin\AppData\Local\Temp\27c9f44e0c5de68792b684355a68ad83eba89cbe46cc9cf3a6efeb448c9f39d6.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2792
- 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)
  - Sets desktop wallpaper using registry
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:532
- - 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:2544
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2600
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1156
- - 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:2380
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2248
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2208
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2200
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:1516
- - 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:920

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2184

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2960

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:2132

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:1892

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

Modify Registry

T1112

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

Defacement

T1491

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

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

Filesize
352KB

MD5
b431bf2649aee55b729f1668a7bc4b12

SHA1
f618c191798cd8a809120bbf6b09ff79d8877138

SHA256
27c9f44e0c5de68792b684355a68ad83eba89cbe46cc9cf3a6efeb448c9f39d6

SHA512
b31ac84b8d41c4d77536763acf3daa75c437b62e792329f232892e7939b35ed8731f3aaaa3e406cf1bf6121a64c920dd03df4da07847debdd2caae3dc70ed544

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

Filesize
973B

MD5
76988bff758f9226768719b023900431

SHA1
6e4644424162e07d6d81020fe7c8f850ae5c85f3

SHA256
e1e6a69aff85dfa728e4ce3b9834f04ad6f393c11abeec8c9f604476f7b6c49a

SHA512
268450c56d91b98e277d7bcffa66cb612f23dcbd441a59a4b1892c0929e6e756389b8a7ee9268d815c2c9b39101b27d16ddcd688308dd1b299a0f4c52b033c35

Download Submit
memory/532-7-0x00000000011E0000-0x000000000123E000-memory.dmp

Filesize
376KB

Download
memory/532-15-0x000007FEF56A0000-0x000007FEF608C000-memory.dmp

Filesize
9.9MB

Download
memory/532-75-0x000007FEF56A0000-0x000007FEF608C000-memory.dmp

Filesize
9.9MB

Download
memory/532-76-0x000007FEF56A0000-0x000007FEF608C000-memory.dmp

Filesize
9.9MB

Download
memory/532-77-0x000007FEF56A0000-0x000007FEF608C000-memory.dmp

Filesize
9.9MB

Download
memory/2792-0-0x000007FEF56A3000-0x000007FEF56A4000-memory.dmp

Filesize
4KB

Download
memory/2792-1-0x0000000000B50000-0x0000000000BAE000-memory.dmp

Filesize
376KB

Download