chaos | e566ee2189f830504af1cb787279111b7b2f3817a61a85bad8d9810701dd4877

Analysis

max time kernel
1560s
max time network
1561s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
16/07/2024, 08:54

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General

Target

07fec2205cbbf2900ede2f6a1d9a5c428ef314c1dda559c632833a9c1d121542.exe
Size

139KB
MD5

e8d60f0ce1aa1ff49f609b36772cd4fa
SHA1

87f5046e42d592eda4e0a2f04eae011cdf54a84a
SHA256

07fec2205cbbf2900ede2f6a1d9a5c428ef314c1dda559c632833a9c1d121542
SHA512

5f2a5979b3308e709e640442cbe0510309ea49e2f968862b68f067483f896a6413ddd1fddcb0fe5abfa0b1f7abaae400f7adbf5d5badbe89b5c2f70242eaa59f
SSDEEP

3072:hgMLiar9d8Wgu+tAcrbFAJc+RsUi1aVDkOvhJjvJ:FFr9dErtMsQB

Score

10^/10

chaos defense_evasion evasion execution impact ransomware

Malware Config

Extracted

Path

C:\Users\Admin\Documents\ENCRYPTED!!!!

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
behavioral2/memory/2072-1-0x0000000000CF0000-0x0000000000CFC000-memory.dmp	family_chaos
behavioral2/files/0x000b000000012268-5.dat	family_chaos
behavioral2/memory/2780-7-0x0000000000F90000-0x0000000000F9C000-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
1340	bcdedit.exe
812	bcdedit.exe

Renames multiple (99) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

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
1492	wbadmin.exe

Drops startup file 1 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
2780	svchost.exe

Drops desktop.ini file(s) 14 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Links\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\Saved Games\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-2660163958-4080398480-1122754539-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\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\Favorites\Links for United States\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
1080	vssadmin.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2660163958-4080398480-1122754539-1000_Classes\Local Settings	rundll32.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2780	svchost.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2072	07fec2205cbbf2900ede2f6a1d9a5c428ef314c1dda559c632833a9c1d121542.exe
2072	07fec2205cbbf2900ede2f6a1d9a5c428ef314c1dda559c632833a9c1d121542.exe
2072	07fec2205cbbf2900ede2f6a1d9a5c428ef314c1dda559c632833a9c1d121542.exe
2780	svchost.exe
2780	svchost.exe
2780	svchost.exe
2780	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2584	AcroRd32.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2072	07fec2205cbbf2900ede2f6a1d9a5c428ef314c1dda559c632833a9c1d121542.exe
Token: SeDebugPrivilege	2780	svchost.exe
Token: SeBackupPrivilege	944	vssvc.exe
Token: SeRestorePrivilege	944	vssvc.exe
Token: SeAuditPrivilege	944	vssvc.exe
Token: SeIncreaseQuotaPrivilege	2484	WMIC.exe
Token: SeSecurityPrivilege	2484	WMIC.exe
Token: SeTakeOwnershipPrivilege	2484	WMIC.exe
Token: SeLoadDriverPrivilege	2484	WMIC.exe
Token: SeSystemProfilePrivilege	2484	WMIC.exe
Token: SeSystemtimePrivilege	2484	WMIC.exe
Token: SeProfSingleProcessPrivilege	2484	WMIC.exe
Token: SeIncBasePriorityPrivilege	2484	WMIC.exe
Token: SeCreatePagefilePrivilege	2484	WMIC.exe
Token: SeBackupPrivilege	2484	WMIC.exe
Token: SeRestorePrivilege	2484	WMIC.exe
Token: SeShutdownPrivilege	2484	WMIC.exe
Token: SeDebugPrivilege	2484	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2484	WMIC.exe
Token: SeRemoteShutdownPrivilege	2484	WMIC.exe
Token: SeUndockPrivilege	2484	WMIC.exe
Token: SeManageVolumePrivilege	2484	WMIC.exe
Token: 33	2484	WMIC.exe
Token: 34	2484	WMIC.exe
Token: 35	2484	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2484	WMIC.exe
Token: SeSecurityPrivilege	2484	WMIC.exe
Token: SeTakeOwnershipPrivilege	2484	WMIC.exe
Token: SeLoadDriverPrivilege	2484	WMIC.exe
Token: SeSystemProfilePrivilege	2484	WMIC.exe
Token: SeSystemtimePrivilege	2484	WMIC.exe
Token: SeProfSingleProcessPrivilege	2484	WMIC.exe
Token: SeIncBasePriorityPrivilege	2484	WMIC.exe
Token: SeCreatePagefilePrivilege	2484	WMIC.exe
Token: SeBackupPrivilege	2484	WMIC.exe
Token: SeRestorePrivilege	2484	WMIC.exe
Token: SeShutdownPrivilege	2484	WMIC.exe
Token: SeDebugPrivilege	2484	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2484	WMIC.exe
Token: SeRemoteShutdownPrivilege	2484	WMIC.exe
Token: SeUndockPrivilege	2484	WMIC.exe
Token: SeManageVolumePrivilege	2484	WMIC.exe
Token: 33	2484	WMIC.exe
Token: 34	2484	WMIC.exe
Token: 35	2484	WMIC.exe
Token: SeBackupPrivilege	884	wbengine.exe
Token: SeRestorePrivilege	884	wbengine.exe
Token: SeSecurityPrivilege	884	wbengine.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2584	AcroRd32.exe
2584	AcroRd32.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 2072 wrote to memory of 2780	2072	07fec2205cbbf2900ede2f6a1d9a5c428ef314c1dda559c632833a9c1d121542.exe	30
PID 2072 wrote to memory of 2780	2072	07fec2205cbbf2900ede2f6a1d9a5c428ef314c1dda559c632833a9c1d121542.exe	30
PID 2072 wrote to memory of 2780	2072	07fec2205cbbf2900ede2f6a1d9a5c428ef314c1dda559c632833a9c1d121542.exe	30
PID 2780 wrote to memory of 1860	2780	svchost.exe	32
PID 2780 wrote to memory of 1860	2780	svchost.exe	32
PID 2780 wrote to memory of 1860	2780	svchost.exe	32
PID 1860 wrote to memory of 1080	1860	cmd.exe	34
PID 1860 wrote to memory of 1080	1860	cmd.exe	34
PID 1860 wrote to memory of 1080	1860	cmd.exe	34
PID 1860 wrote to memory of 2484	1860	cmd.exe	37
PID 1860 wrote to memory of 2484	1860	cmd.exe	37
PID 1860 wrote to memory of 2484	1860	cmd.exe	37
PID 2780 wrote to memory of 2960	2780	svchost.exe	39
PID 2780 wrote to memory of 2960	2780	svchost.exe	39
PID 2780 wrote to memory of 2960	2780	svchost.exe	39
PID 2960 wrote to memory of 1340	2960	cmd.exe	41
PID 2960 wrote to memory of 1340	2960	cmd.exe	41
PID 2960 wrote to memory of 1340	2960	cmd.exe	41
PID 2960 wrote to memory of 812	2960	cmd.exe	42
PID 2960 wrote to memory of 812	2960	cmd.exe	42
PID 2960 wrote to memory of 812	2960	cmd.exe	42
PID 2780 wrote to memory of 2964	2780	svchost.exe	43
PID 2780 wrote to memory of 2964	2780	svchost.exe	43
PID 2780 wrote to memory of 2964	2780	svchost.exe	43
PID 2964 wrote to memory of 1492	2964	cmd.exe	45
PID 2964 wrote to memory of 1492	2964	cmd.exe	45
PID 2964 wrote to memory of 1492	2964	cmd.exe	45
PID 2780 wrote to memory of 2628	2780	svchost.exe	49
PID 2780 wrote to memory of 2628	2780	svchost.exe	49
PID 2780 wrote to memory of 2628	2780	svchost.exe	49
PID 2628 wrote to memory of 2584	2628	rundll32.exe	50
PID 2628 wrote to memory of 2584	2628	rundll32.exe	50
PID 2628 wrote to memory of 2584	2628	rundll32.exe	50
PID 2628 wrote to memory of 2584	2628	rundll32.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\07fec2205cbbf2900ede2f6a1d9a5c428ef314c1dda559c632833a9c1d121542.exe
"C:\Users\Admin\AppData\Local\Temp\07fec2205cbbf2900ede2f6a1d9a5c428ef314c1dda559c632833a9c1d121542.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2072
- 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:2780
- - 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:1860
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:1080
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2484
- - 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:2960
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1340
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:812
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2964
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:1492
- - C:\Windows\system32\rundll32.exe
    "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Roaming\ENCRYPTED!!!!
    3⤵
    - Modifies registry class
    - Suspicious use of WriteProcessMemory
    PID:2628
  - - C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
      "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Roaming\ENCRYPTED!!!!"
      4⤵
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of SetWindowsHookEx
      PID:2584

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:944

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:884

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:2504

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:1600

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

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
c56c78029d34f4bb24fee386d5280eb6

SHA1
6a973b1172fb85a6a2401c2acf0512d998d80a7c

SHA256
cc8ac6fecdfe7eda73fcfbb53fbbd97eb25fae6cfdb30bb321e51f295b605545

SHA512
544a73782a4130abe7146504d471ca2bc126da883ef6269cd1bf139221ca234095d413358f744109a3e1b4c0446ce42613450463b30f25f69fb12277f46130fd

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

Filesize
139KB

MD5
e8d60f0ce1aa1ff49f609b36772cd4fa

SHA1
87f5046e42d592eda4e0a2f04eae011cdf54a84a

SHA256
07fec2205cbbf2900ede2f6a1d9a5c428ef314c1dda559c632833a9c1d121542

SHA512
5f2a5979b3308e709e640442cbe0510309ea49e2f968862b68f067483f896a6413ddd1fddcb0fe5abfa0b1f7abaae400f7adbf5d5badbe89b5c2f70242eaa59f

Download Submit
C:\Users\Admin\Documents\ENCRYPTED!!!!

Filesize
964B

MD5
4217b8b83ce3c3f70029a056546f8fd0

SHA1
487cdb5733d073a0427418888e8f7070fe782a03

SHA256
7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121

SHA512
2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740

Download Submit
memory/2072-0-0x000007FEF4D73000-0x000007FEF4D74000-memory.dmp

Filesize
4KB

Download
memory/2072-1-0x0000000000CF0000-0x0000000000CFC000-memory.dmp

Filesize
48KB

Download
memory/2780-7-0x0000000000F90000-0x0000000000F9C000-memory.dmp

Filesize
48KB

Download
memory/2780-9-0x000007FEF4D70000-0x000007FEF575C000-memory.dmp

Filesize
9.9MB

Download
memory/2780-10-0x000007FEF4D70000-0x000007FEF575C000-memory.dmp

Filesize
9.9MB

Download
memory/2780-244-0x000007FEF4D70000-0x000007FEF575C000-memory.dmp

Filesize
9.9MB

Download