chaos | 64d0b1b9e3bcae016bb2a2cbf1ba0fe05a0f1e3853bda1dd58adda14a5cf2544

General

Target

Ransom.exe
Size

22KB
MD5

d4669c94a097854dce4884b30969263a
SHA1

beaef0dae9832bc5f4406140629d952d90bcad3c
SHA256

64d0b1b9e3bcae016bb2a2cbf1ba0fe05a0f1e3853bda1dd58adda14a5cf2544
SHA512

a7f51b4100c29beac1eef99b88dcbac2fc5e961b7e9da7ef2fc754db5bf1d50c0eb9e1f6a6e72869a782fe62335178ae09f39857517a1cd9f1d83b9bebeed523
SSDEEP

384:23MLWHn3kIk/IqoIApcXsQP8GdtKXRIJRr91CzJb6kem:6n3kIMLApcNPfKXRARr9iJbpem

Score

10^/10

chaos defense_evasion evasion execution impact ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\howtouninstall.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 $100. 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: 0.000014 BTC Bitcoin Address: 12mNn7mCFptRZynEfLA2mEowHYsPYhYVKZ

Wallets

12mNn7mCFptRZynEfLA2mEowHYsPYhYVKZ

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1168-1-0x0000000000140000-0x000000000014C000-memory.dmp	family_chaos
C:\Users\Admin\AppData\Roaming\svchost.exe	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

Processes:

bcdedit.exebcdedit.exe

pid process

2388 bcdedit.exe
3972 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

Processes:

wbadmin.exe

pid process

4488 wbadmin.exe

pid	process
2388	bcdedit.exe
3972	bcdedit.exe

pid	process
4488	wbadmin.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Ransom.exesvchost.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	Ransom.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	svchost.exe

Drops startup file 3 IoCs

Processes:

svchost.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\howtouninstall.txt	svchost.exe
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

Executes dropped EXE 1 IoCs

Processes:

svchost.exe

pid process

224 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

pid	process
224	svchost.exe

Drops desktop.ini file(s) 34 IoCs

Processes:

svchost.exe

description	ioc	process
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\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\Camera Roll\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\Contacts\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AccountPictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-4124900551-4068476067-3491212533-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\OneDrive\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\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\Saved Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links\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\Windows\Start Menu\Programs\Accessibility\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\Public\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\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\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	svchost.exe

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

System Information Discovery
T1082

Checks SCSI registry key(s) 3 TTPs 4 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

vds.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_DADY&PROD_HARDDISK\4&215468A5&0&000000	vds.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName	vds.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_QEMU&PROD_QEMU_DVD-ROM\4&215468A5&0&010000	vds.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_QEMU&Prod_QEMU_DVD-ROM\4&215468a5&0&010000\FriendlyName	vds.exe

Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
ransomware

File Deletion
T1070.004

Inhibit System Recovery
T1490

Processes:

vssadmin.exe

pid process

3600 vssadmin.exe
Modifies registry class 1 IoCs

Processes:

svchost.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000_Classes\Local Settings svchost.exe
Opens file in notepad (likely ransom note) 1 IoCs
ransomware

Processes:

NOTEPAD.EXE

pid process

1800 NOTEPAD.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

svchost.exe

pid process

224 svchost.exe

pid	process
3600	vssadmin.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000_Classes\Local Settings	svchost.exe

pid	process
1800	NOTEPAD.EXE

pid	process
224	svchost.exe

Suspicious behavior: EnumeratesProcesses 50 IoCs

Processes:

Ransom.exesvchost.exe

pid	process
1168	Ransom.exe
1168	Ransom.exe
1168	Ransom.exe
1168	Ransom.exe
1168	Ransom.exe
1168	Ransom.exe
1168	Ransom.exe
1168	Ransom.exe
1168	Ransom.exe
1168	Ransom.exe
1168	Ransom.exe
1168	Ransom.exe
1168	Ransom.exe
1168	Ransom.exe
1168	Ransom.exe
1168	Ransom.exe
1168	Ransom.exe
1168	Ransom.exe
1168	Ransom.exe
1168	Ransom.exe
1168	Ransom.exe
1168	Ransom.exe
1168	Ransom.exe
1168	Ransom.exe
1168	Ransom.exe
1168	Ransom.exe
224	svchost.exe
224	svchost.exe
224	svchost.exe
224	svchost.exe
224	svchost.exe
224	svchost.exe
224	svchost.exe
224	svchost.exe
224	svchost.exe
224	svchost.exe
224	svchost.exe
224	svchost.exe
224	svchost.exe
224	svchost.exe
224	svchost.exe
224	svchost.exe
224	svchost.exe
224	svchost.exe
224	svchost.exe
224	svchost.exe
224	svchost.exe
224	svchost.exe
224	svchost.exe
224	svchost.exe

Suspicious use of AdjustPrivilegeToken 50 IoCs

Processes:

Ransom.exesvchost.exevssvc.exeWMIC.exewbengine.exe

description	pid	process
Token: SeDebugPrivilege	1168	Ransom.exe
Token: SeDebugPrivilege	224	svchost.exe
Token: SeBackupPrivilege	1624	vssvc.exe
Token: SeRestorePrivilege	1624	vssvc.exe
Token: SeAuditPrivilege	1624	vssvc.exe
Token: SeIncreaseQuotaPrivilege	3968	WMIC.exe
Token: SeSecurityPrivilege	3968	WMIC.exe
Token: SeTakeOwnershipPrivilege	3968	WMIC.exe
Token: SeLoadDriverPrivilege	3968	WMIC.exe
Token: SeSystemProfilePrivilege	3968	WMIC.exe
Token: SeSystemtimePrivilege	3968	WMIC.exe
Token: SeProfSingleProcessPrivilege	3968	WMIC.exe
Token: SeIncBasePriorityPrivilege	3968	WMIC.exe
Token: SeCreatePagefilePrivilege	3968	WMIC.exe
Token: SeBackupPrivilege	3968	WMIC.exe
Token: SeRestorePrivilege	3968	WMIC.exe
Token: SeShutdownPrivilege	3968	WMIC.exe
Token: SeDebugPrivilege	3968	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3968	WMIC.exe
Token: SeRemoteShutdownPrivilege	3968	WMIC.exe
Token: SeUndockPrivilege	3968	WMIC.exe
Token: SeManageVolumePrivilege	3968	WMIC.exe
Token: 33	3968	WMIC.exe
Token: 34	3968	WMIC.exe
Token: 35	3968	WMIC.exe
Token: 36	3968	WMIC.exe
Token: SeIncreaseQuotaPrivilege	3968	WMIC.exe
Token: SeSecurityPrivilege	3968	WMIC.exe
Token: SeTakeOwnershipPrivilege	3968	WMIC.exe
Token: SeLoadDriverPrivilege	3968	WMIC.exe
Token: SeSystemProfilePrivilege	3968	WMIC.exe
Token: SeSystemtimePrivilege	3968	WMIC.exe
Token: SeProfSingleProcessPrivilege	3968	WMIC.exe
Token: SeIncBasePriorityPrivilege	3968	WMIC.exe
Token: SeCreatePagefilePrivilege	3968	WMIC.exe
Token: SeBackupPrivilege	3968	WMIC.exe
Token: SeRestorePrivilege	3968	WMIC.exe
Token: SeShutdownPrivilege	3968	WMIC.exe
Token: SeDebugPrivilege	3968	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3968	WMIC.exe
Token: SeRemoteShutdownPrivilege	3968	WMIC.exe
Token: SeUndockPrivilege	3968	WMIC.exe
Token: SeManageVolumePrivilege	3968	WMIC.exe
Token: 33	3968	WMIC.exe
Token: 34	3968	WMIC.exe
Token: 35	3968	WMIC.exe
Token: 36	3968	WMIC.exe
Token: SeBackupPrivilege	2060	wbengine.exe
Token: SeRestorePrivilege	2060	wbengine.exe
Token: SeSecurityPrivilege	2060	wbengine.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

Ransom.exesvchost.execmd.execmd.execmd.exe

description	pid	process	target process
PID 1168 wrote to memory of 224	1168	Ransom.exe	svchost.exe
PID 1168 wrote to memory of 224	1168	Ransom.exe	svchost.exe
PID 224 wrote to memory of 4372	224	svchost.exe	cmd.exe
PID 224 wrote to memory of 4372	224	svchost.exe	cmd.exe
PID 4372 wrote to memory of 3600	4372	cmd.exe	vssadmin.exe
PID 4372 wrote to memory of 3600	4372	cmd.exe	vssadmin.exe
PID 4372 wrote to memory of 3968	4372	cmd.exe	WMIC.exe
PID 4372 wrote to memory of 3968	4372	cmd.exe	WMIC.exe
PID 224 wrote to memory of 3180	224	svchost.exe	cmd.exe
PID 224 wrote to memory of 3180	224	svchost.exe	cmd.exe
PID 3180 wrote to memory of 2388	3180	cmd.exe	bcdedit.exe
PID 3180 wrote to memory of 2388	3180	cmd.exe	bcdedit.exe
PID 3180 wrote to memory of 3972	3180	cmd.exe	bcdedit.exe
PID 3180 wrote to memory of 3972	3180	cmd.exe	bcdedit.exe
PID 224 wrote to memory of 2856	224	svchost.exe	cmd.exe
PID 224 wrote to memory of 2856	224	svchost.exe	cmd.exe
PID 2856 wrote to memory of 4488	2856	cmd.exe	wbadmin.exe
PID 2856 wrote to memory of 4488	2856	cmd.exe	wbadmin.exe
PID 224 wrote to memory of 1800	224	svchost.exe	NOTEPAD.EXE
PID 224 wrote to memory of 1800	224	svchost.exe	NOTEPAD.EXE

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\Ransom.exe
"C:\Users\Admin\AppData\Local\Temp\Ransom.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1168
- C:\Users\Admin\AppData\Roaming\svchost.exe
  "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Drops desktop.ini file(s)
  - Modifies registry class
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:224
- - 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:4372
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:3600
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:3968
- - 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:3180
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2388
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:3972
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2856
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:4488
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\howtouninstall.txt
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:1800

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1624

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2060

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:972

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
- Checks SCSI registry key(s)
PID:1484

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Management Instrumentation

1

T1047

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

3

T1070

File Deletion

3

T1070.004

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Inhibit System Recovery

4

T1490

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Downloads

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

Filesize
22KB

MD5
d4669c94a097854dce4884b30969263a

SHA1
beaef0dae9832bc5f4406140629d952d90bcad3c

SHA256
64d0b1b9e3bcae016bb2a2cbf1ba0fe05a0f1e3853bda1dd58adda14a5cf2544

SHA512
a7f51b4100c29beac1eef99b88dcbac2fc5e961b7e9da7ef2fc754db5bf1d50c0eb9e1f6a6e72869a782fe62335178ae09f39857517a1cd9f1d83b9bebeed523

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

Filesize
955B

MD5
79f37ebbd9fad4e2219563953c94d152

SHA1
87a362ff8fe4240d4031366277ac2d8a3f51c184

SHA256
bdba644092aa5efb03249e8306d4117cb615a286acf46ccfdd382f867f3d56b6

SHA512
da3512e9e77f6f088394fa5a6153b38d0bd7dab87f027023b9718b3e11d915f7a497e1b491f699eeadbbbb2a8f105d111b6898b3b514986221ba551614fc2fd7

Download Submit
memory/224-14-0x00007FF894C90000-0x00007FF895751000-memory.dmp

Filesize
10.8MB

Download
memory/224-72-0x00007FF894C90000-0x00007FF895751000-memory.dmp

Filesize
10.8MB

Download
memory/1168-0-0x00007FF894C93000-0x00007FF894C95000-memory.dmp

Filesize
8KB

Download
memory/1168-1-0x0000000000140000-0x000000000014C000-memory.dmp

Filesize
48KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads