chaos | 63fde64543a837c1cf7072bb0478445232d526597a252e335381081f75745bee

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
11-08-2024 21:52

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General

Target

63fde64543a837c1cf7072bb0478445232d526597a252e335381081f75745bee.exe
Size

23KB
MD5

003890676b63239d5fef463e4dd46ed4
SHA1

5a9e67ac8794d9bcf18c1e67da5c0bdf1c0adfba
SHA256

63fde64543a837c1cf7072bb0478445232d526597a252e335381081f75745bee
SHA512

e77d77e8619e700c106b658be724406167043a2989e8da250983dbb4a68481fc76c7b3d5fd433d68cdd1012840e0d6b7ace501facf73d782e392c447b6cc3f6d
SSDEEP

384:33Mg/bqo2mJk5BFnqXipFqjuwzU3Jmr91CdFHbTKe3:hqo2b5iXip0jK5mr9YFHbGe3

Score

10^/10

chaos defense_evasion evasion execution impact ransomware spyware stealer

Malware Config

Extracted

Path

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

Ransom Note

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: bc1qma7ln7jfq5c7kl6du2cth8g7z8u468n4txw5rx

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/2840-1-0x0000000000170000-0x000000000017C000-memory.dmp	family_chaos
behavioral1/files/0x0018000000005c50-5.dat	family_chaos
behavioral1/memory/2656-7-0x0000000001110000-0x000000000111C000-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
1860	bcdedit.exe
2064	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
932	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
2656	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\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-3502430532-24693940-2469786940-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\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\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\Admin\Contacts\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Videos\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\Windows\Recent\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Searches\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\Videos\Sample Videos\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\Public\Music\Sample Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\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\Start Menu\Programs\Accessories\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\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\Admin\AppData\Roaming\Microsoft\Windows\Libraries\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\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\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\AppData\Roaming\Microsoft\Windows\Start Menu\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\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
1732	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2284	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2656	svchost.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2840	63fde64543a837c1cf7072bb0478445232d526597a252e335381081f75745bee.exe
2840	63fde64543a837c1cf7072bb0478445232d526597a252e335381081f75745bee.exe
2840	63fde64543a837c1cf7072bb0478445232d526597a252e335381081f75745bee.exe
2656	svchost.exe
2656	svchost.exe
2656	svchost.exe
2656	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2840	63fde64543a837c1cf7072bb0478445232d526597a252e335381081f75745bee.exe
Token: SeDebugPrivilege	2656	svchost.exe
Token: SeBackupPrivilege	2412	vssvc.exe
Token: SeRestorePrivilege	2412	vssvc.exe
Token: SeAuditPrivilege	2412	vssvc.exe
Token: SeIncreaseQuotaPrivilege	2244	WMIC.exe
Token: SeSecurityPrivilege	2244	WMIC.exe
Token: SeTakeOwnershipPrivilege	2244	WMIC.exe
Token: SeLoadDriverPrivilege	2244	WMIC.exe
Token: SeSystemProfilePrivilege	2244	WMIC.exe
Token: SeSystemtimePrivilege	2244	WMIC.exe
Token: SeProfSingleProcessPrivilege	2244	WMIC.exe
Token: SeIncBasePriorityPrivilege	2244	WMIC.exe
Token: SeCreatePagefilePrivilege	2244	WMIC.exe
Token: SeBackupPrivilege	2244	WMIC.exe
Token: SeRestorePrivilege	2244	WMIC.exe
Token: SeShutdownPrivilege	2244	WMIC.exe
Token: SeDebugPrivilege	2244	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2244	WMIC.exe
Token: SeRemoteShutdownPrivilege	2244	WMIC.exe
Token: SeUndockPrivilege	2244	WMIC.exe
Token: SeManageVolumePrivilege	2244	WMIC.exe
Token: 33	2244	WMIC.exe
Token: 34	2244	WMIC.exe
Token: 35	2244	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2244	WMIC.exe
Token: SeSecurityPrivilege	2244	WMIC.exe
Token: SeTakeOwnershipPrivilege	2244	WMIC.exe
Token: SeLoadDriverPrivilege	2244	WMIC.exe
Token: SeSystemProfilePrivilege	2244	WMIC.exe
Token: SeSystemtimePrivilege	2244	WMIC.exe
Token: SeProfSingleProcessPrivilege	2244	WMIC.exe
Token: SeIncBasePriorityPrivilege	2244	WMIC.exe
Token: SeCreatePagefilePrivilege	2244	WMIC.exe
Token: SeBackupPrivilege	2244	WMIC.exe
Token: SeRestorePrivilege	2244	WMIC.exe
Token: SeShutdownPrivilege	2244	WMIC.exe
Token: SeDebugPrivilege	2244	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2244	WMIC.exe
Token: SeRemoteShutdownPrivilege	2244	WMIC.exe
Token: SeUndockPrivilege	2244	WMIC.exe
Token: SeManageVolumePrivilege	2244	WMIC.exe
Token: 33	2244	WMIC.exe
Token: 34	2244	WMIC.exe
Token: 35	2244	WMIC.exe
Token: SeBackupPrivilege	828	wbengine.exe
Token: SeRestorePrivilege	828	wbengine.exe
Token: SeSecurityPrivilege	828	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2840 wrote to memory of 2656	2840	63fde64543a837c1cf7072bb0478445232d526597a252e335381081f75745bee.exe	30
PID 2840 wrote to memory of 2656	2840	63fde64543a837c1cf7072bb0478445232d526597a252e335381081f75745bee.exe	30
PID 2840 wrote to memory of 2656	2840	63fde64543a837c1cf7072bb0478445232d526597a252e335381081f75745bee.exe	30
PID 2656 wrote to memory of 2816	2656	svchost.exe	32
PID 2656 wrote to memory of 2816	2656	svchost.exe	32
PID 2656 wrote to memory of 2816	2656	svchost.exe	32
PID 2816 wrote to memory of 1732	2816	cmd.exe	34
PID 2816 wrote to memory of 1732	2816	cmd.exe	34
PID 2816 wrote to memory of 1732	2816	cmd.exe	34
PID 2816 wrote to memory of 2244	2816	cmd.exe	37
PID 2816 wrote to memory of 2244	2816	cmd.exe	37
PID 2816 wrote to memory of 2244	2816	cmd.exe	37
PID 2656 wrote to memory of 2288	2656	svchost.exe	39
PID 2656 wrote to memory of 2288	2656	svchost.exe	39
PID 2656 wrote to memory of 2288	2656	svchost.exe	39
PID 2288 wrote to memory of 1860	2288	cmd.exe	41
PID 2288 wrote to memory of 1860	2288	cmd.exe	41
PID 2288 wrote to memory of 1860	2288	cmd.exe	41
PID 2288 wrote to memory of 2064	2288	cmd.exe	42
PID 2288 wrote to memory of 2064	2288	cmd.exe	42
PID 2288 wrote to memory of 2064	2288	cmd.exe	42
PID 2656 wrote to memory of 1272	2656	svchost.exe	43
PID 2656 wrote to memory of 1272	2656	svchost.exe	43
PID 2656 wrote to memory of 1272	2656	svchost.exe	43
PID 1272 wrote to memory of 932	1272	cmd.exe	45
PID 1272 wrote to memory of 932	1272	cmd.exe	45
PID 1272 wrote to memory of 932	1272	cmd.exe	45
PID 2656 wrote to memory of 2284	2656	svchost.exe	49
PID 2656 wrote to memory of 2284	2656	svchost.exe	49
PID 2656 wrote to memory of 2284	2656	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\63fde64543a837c1cf7072bb0478445232d526597a252e335381081f75745bee.exe
"C:\Users\Admin\AppData\Local\Temp\63fde64543a837c1cf7072bb0478445232d526597a252e335381081f75745bee.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2840
- 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:2656
- - 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:2816
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:1732
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2244
- - 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:2288
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1860
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2064
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1272
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:932
- - 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:2284

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2412

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:828

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:2916

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:1844

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
003890676b63239d5fef463e4dd46ed4

SHA1
5a9e67ac8794d9bcf18c1e67da5c0bdf1c0adfba

SHA256
63fde64543a837c1cf7072bb0478445232d526597a252e335381081f75745bee

SHA512
e77d77e8619e700c106b658be724406167043a2989e8da250983dbb4a68481fc76c7b3d5fd433d68cdd1012840e0d6b7ace501facf73d782e392c447b6cc3f6d

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

Filesize
880B

MD5
8ebe7ebf22657dc6d943ff9117461592

SHA1
89fceb2c1cee70f1ab22cd3fb7a15e49a2697990

SHA256
2bc6b6fb11995005dd59cc8441af5d3066b9f401bafa11056d523019a98bf9e5

SHA512
8a9431e195e22a0f2b55457fcd8c42b05542253ab08a2e6e1a8b1e241c42b75b161a62fc5ceaa9938942bfc33c56d2c4a53a6df881c1d834ebb318fae64bbfff

Download Submit
memory/2656-7-0x0000000001110000-0x000000000111C000-memory.dmp

Filesize
48KB

Download
memory/2656-8-0x000007FEF62C0000-0x000007FEF6CAC000-memory.dmp

Filesize
9.9MB

Download
memory/2656-16-0x000007FEF62C0000-0x000007FEF6CAC000-memory.dmp

Filesize
9.9MB

Download
memory/2656-489-0x000007FEF62C0000-0x000007FEF6CAC000-memory.dmp

Filesize
9.9MB

Download
memory/2840-0-0x000007FEF62C3000-0x000007FEF62C4000-memory.dmp

Filesize
4KB

Download
memory/2840-1-0x0000000000170000-0x000000000017C000-memory.dmp

Filesize
48KB

Download