chaos | cc415435bfa94029b8a0686c12172491b4bbedbf38ad7f26b2c8ee32805ba950

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03/10/2024, 03:35

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General

Target

2024-10-03_e1be34b8216efb41ca73194d28956eeb_chaos_destroyer_wannacry.exe
Size

23KB
MD5

e1be34b8216efb41ca73194d28956eeb
SHA1

9136f76094b2a584389461540cd063425ab1becc
SHA256

cc415435bfa94029b8a0686c12172491b4bbedbf38ad7f26b2c8ee32805ba950
SHA512

400d99c5e758e7f45f22a702107074b2491607cc84d539b5fa1a9021588cdea3f099540d699dde436f682189324bc8b3651bfef3e6dbd16c82fab505f75feed1
SSDEEP

384:CS3Mg/bqo2mcxtivpZqjuwzU7JHr91CIxb5Aez:Hqo2ptMpgjKNHr93xbqez

Score

10^/10

chaos defense_evasion evasion execution impact 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/300-1-0x0000000000850000-0x000000000085C000-memory.dmp	family_chaos
behavioral1/files/0x000d00000001226d-4.dat	family_chaos
behavioral1/memory/1200-7-0x0000000000F90000-0x0000000000F9C000-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
2404	bcdedit.exe
1736	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
1720	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
1200	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\Documents\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\Internet Explorer\Quick Launch\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\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\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
File opened for modification	C:\Users\Admin\Desktop\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\AppData\Roaming\Microsoft\Windows\Libraries\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\Videos\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\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Music\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\Recent\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\Favorites\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-1846800975-3917212583-2893086201-1000\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\Searches\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\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\Programs\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\Sample Music\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
552	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2264	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1200	svchost.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
300	2024-10-03_e1be34b8216efb41ca73194d28956eeb_chaos_destroyer_wannacry.exe
300	2024-10-03_e1be34b8216efb41ca73194d28956eeb_chaos_destroyer_wannacry.exe
300	2024-10-03_e1be34b8216efb41ca73194d28956eeb_chaos_destroyer_wannacry.exe
1200	svchost.exe
1200	svchost.exe
1200	svchost.exe
1200	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	300	2024-10-03_e1be34b8216efb41ca73194d28956eeb_chaos_destroyer_wannacry.exe
Token: SeDebugPrivilege	1200	svchost.exe
Token: SeBackupPrivilege	2776	vssvc.exe
Token: SeRestorePrivilege	2776	vssvc.exe
Token: SeAuditPrivilege	2776	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	1556	wbengine.exe
Token: SeRestorePrivilege	1556	wbengine.exe
Token: SeSecurityPrivilege	1556	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 300 wrote to memory of 1200	300	2024-10-03_e1be34b8216efb41ca73194d28956eeb_chaos_destroyer_wannacry.exe	31
PID 300 wrote to memory of 1200	300	2024-10-03_e1be34b8216efb41ca73194d28956eeb_chaos_destroyer_wannacry.exe	31
PID 300 wrote to memory of 1200	300	2024-10-03_e1be34b8216efb41ca73194d28956eeb_chaos_destroyer_wannacry.exe	31
PID 1200 wrote to memory of 1524	1200	svchost.exe	33
PID 1200 wrote to memory of 1524	1200	svchost.exe	33
PID 1200 wrote to memory of 1524	1200	svchost.exe	33
PID 1524 wrote to memory of 552	1524	cmd.exe	35
PID 1524 wrote to memory of 552	1524	cmd.exe	35
PID 1524 wrote to memory of 552	1524	cmd.exe	35
PID 1524 wrote to memory of 2244	1524	cmd.exe	38
PID 1524 wrote to memory of 2244	1524	cmd.exe	38
PID 1524 wrote to memory of 2244	1524	cmd.exe	38
PID 1200 wrote to memory of 768	1200	svchost.exe	40
PID 1200 wrote to memory of 768	1200	svchost.exe	40
PID 1200 wrote to memory of 768	1200	svchost.exe	40
PID 768 wrote to memory of 2404	768	cmd.exe	42
PID 768 wrote to memory of 2404	768	cmd.exe	42
PID 768 wrote to memory of 2404	768	cmd.exe	42
PID 768 wrote to memory of 1736	768	cmd.exe	43
PID 768 wrote to memory of 1736	768	cmd.exe	43
PID 768 wrote to memory of 1736	768	cmd.exe	43
PID 1200 wrote to memory of 2108	1200	svchost.exe	44
PID 1200 wrote to memory of 2108	1200	svchost.exe	44
PID 1200 wrote to memory of 2108	1200	svchost.exe	44
PID 2108 wrote to memory of 1720	2108	cmd.exe	46
PID 2108 wrote to memory of 1720	2108	cmd.exe	46
PID 2108 wrote to memory of 1720	2108	cmd.exe	46
PID 1200 wrote to memory of 2264	1200	svchost.exe	50
PID 1200 wrote to memory of 2264	1200	svchost.exe	50
PID 1200 wrote to memory of 2264	1200	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\2024-10-03_e1be34b8216efb41ca73194d28956eeb_chaos_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-03_e1be34b8216efb41ca73194d28956eeb_chaos_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:300
- 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:1200
- - 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:1524
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:552
  - - 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:768
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2404
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1736
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2108
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:1720
- - 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:2264

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2776

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1556

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:2044

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:1096

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

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
e1be34b8216efb41ca73194d28956eeb

SHA1
9136f76094b2a584389461540cd063425ab1becc

SHA256
cc415435bfa94029b8a0686c12172491b4bbedbf38ad7f26b2c8ee32805ba950

SHA512
400d99c5e758e7f45f22a702107074b2491607cc84d539b5fa1a9021588cdea3f099540d699dde436f682189324bc8b3651bfef3e6dbd16c82fab505f75feed1

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

Filesize
964B

MD5
4217b8b83ce3c3f70029a056546f8fd0

SHA1
487cdb5733d073a0427418888e8f7070fe782a03

SHA256
7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121

SHA512
2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740

Download Submit
memory/300-0-0x000007FEF5F83000-0x000007FEF5F84000-memory.dmp

Filesize
4KB

Download
memory/300-1-0x0000000000850000-0x000000000085C000-memory.dmp

Filesize
48KB

Download
memory/1200-7-0x0000000000F90000-0x0000000000F9C000-memory.dmp

Filesize
48KB

Download
memory/1200-21-0x000007FEF5F80000-0x000007FEF696C000-memory.dmp

Filesize
9.9MB

Download
memory/1200-30-0x000007FEF5F80000-0x000007FEF696C000-memory.dmp

Filesize
9.9MB

Download
memory/1200-483-0x000007FEF5F80000-0x000007FEF696C000-memory.dmp

Filesize
9.9MB

Download