chaos | 412d40720095f3a6c8cbae9bb4cae40e4d3cb372962b11795792eec61f3de690

Analysis

max time kernel
118s
max time network
122s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
15-08-2024 17:24

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General

Target

2024-08-15_947041f93f370b6a3668cbe0ac401582_wannacry.exe
Size

1.8MB
MD5

947041f93f370b6a3668cbe0ac401582
SHA1

5e0664cbb97f5a5563f122b99f6bd620a81b2f37
SHA256

412d40720095f3a6c8cbae9bb4cae40e4d3cb372962b11795792eec61f3de690
SHA512

61dbb400f4c3f29ab0154ab2fd13fa57b5788b6f5f56b24c354e29ecd5b6a926703b3244ec39793ddae24ec3ae5c38691bdf413cced83b11bbf0b33f3fdbd62b
SSDEEP

12288:BBg4aUfZ6LONqr4zUcHLdpn7nNNGEylDiTqSzNwhrKlbHu4b+hCVgw7AKXatYBaq:BBa+esTzNd6jgnlSFL9cxbIgwS1zZ

Score

10^/10

chaos defense_evasion discovery evasion execution impact ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\Documents\Beni Oku !

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/2500-1-0x0000000001250000-0x000000000141C000-memory.dmp	family_chaos
behavioral1/files/0x000e00000001418b-4.dat	family_chaos
behavioral1/memory/1704-7-0x0000000000AF0000-0x0000000000CBC000-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
2900	bcdedit.exe
2888	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
2880	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\Beni Oku !	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1704	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\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\SendTo\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\Public\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Music\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	F:\$RECYCLE.BIN\S-1-5-21-2703099537-420551529-3771253338-1000\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\Recent\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\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\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\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\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\Accessories\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\Public\Music\Sample Music\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\Admin\Downloads\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\Administrative Tools\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\Documents\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\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

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\7w71mqyr8.jpg"	svchost.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AcroRd32.exe

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
2444	vssadmin.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000_Classes\Local Settings	rundll32.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1704	svchost.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2500	2024-08-15_947041f93f370b6a3668cbe0ac401582_wannacry.exe
2500	2024-08-15_947041f93f370b6a3668cbe0ac401582_wannacry.exe
2500	2024-08-15_947041f93f370b6a3668cbe0ac401582_wannacry.exe
1704	svchost.exe
1704	svchost.exe
1704	svchost.exe
1704	svchost.exe
1704	svchost.exe
1704	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2404	AcroRd32.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2500	2024-08-15_947041f93f370b6a3668cbe0ac401582_wannacry.exe
Token: SeDebugPrivilege	1704	svchost.exe
Token: SeBackupPrivilege	1300	vssvc.exe
Token: SeRestorePrivilege	1300	vssvc.exe
Token: SeAuditPrivilege	1300	vssvc.exe
Token: SeIncreaseQuotaPrivilege	2852	WMIC.exe
Token: SeSecurityPrivilege	2852	WMIC.exe
Token: SeTakeOwnershipPrivilege	2852	WMIC.exe
Token: SeLoadDriverPrivilege	2852	WMIC.exe
Token: SeSystemProfilePrivilege	2852	WMIC.exe
Token: SeSystemtimePrivilege	2852	WMIC.exe
Token: SeProfSingleProcessPrivilege	2852	WMIC.exe
Token: SeIncBasePriorityPrivilege	2852	WMIC.exe
Token: SeCreatePagefilePrivilege	2852	WMIC.exe
Token: SeBackupPrivilege	2852	WMIC.exe
Token: SeRestorePrivilege	2852	WMIC.exe
Token: SeShutdownPrivilege	2852	WMIC.exe
Token: SeDebugPrivilege	2852	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2852	WMIC.exe
Token: SeRemoteShutdownPrivilege	2852	WMIC.exe
Token: SeUndockPrivilege	2852	WMIC.exe
Token: SeManageVolumePrivilege	2852	WMIC.exe
Token: 33	2852	WMIC.exe
Token: 34	2852	WMIC.exe
Token: 35	2852	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2852	WMIC.exe
Token: SeSecurityPrivilege	2852	WMIC.exe
Token: SeTakeOwnershipPrivilege	2852	WMIC.exe
Token: SeLoadDriverPrivilege	2852	WMIC.exe
Token: SeSystemProfilePrivilege	2852	WMIC.exe
Token: SeSystemtimePrivilege	2852	WMIC.exe
Token: SeProfSingleProcessPrivilege	2852	WMIC.exe
Token: SeIncBasePriorityPrivilege	2852	WMIC.exe
Token: SeCreatePagefilePrivilege	2852	WMIC.exe
Token: SeBackupPrivilege	2852	WMIC.exe
Token: SeRestorePrivilege	2852	WMIC.exe
Token: SeShutdownPrivilege	2852	WMIC.exe
Token: SeDebugPrivilege	2852	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2852	WMIC.exe
Token: SeRemoteShutdownPrivilege	2852	WMIC.exe
Token: SeUndockPrivilege	2852	WMIC.exe
Token: SeManageVolumePrivilege	2852	WMIC.exe
Token: 33	2852	WMIC.exe
Token: 34	2852	WMIC.exe
Token: 35	2852	WMIC.exe
Token: SeBackupPrivilege	2944	wbengine.exe
Token: SeRestorePrivilege	2944	wbengine.exe
Token: SeSecurityPrivilege	2944	wbengine.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2404	AcroRd32.exe
2404	AcroRd32.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 2500 wrote to memory of 1704	2500	2024-08-15_947041f93f370b6a3668cbe0ac401582_wannacry.exe	31
PID 2500 wrote to memory of 1704	2500	2024-08-15_947041f93f370b6a3668cbe0ac401582_wannacry.exe	31
PID 2500 wrote to memory of 1704	2500	2024-08-15_947041f93f370b6a3668cbe0ac401582_wannacry.exe	31
PID 1704 wrote to memory of 2588	1704	svchost.exe	33
PID 1704 wrote to memory of 2588	1704	svchost.exe	33
PID 1704 wrote to memory of 2588	1704	svchost.exe	33
PID 2588 wrote to memory of 2444	2588	cmd.exe	35
PID 2588 wrote to memory of 2444	2588	cmd.exe	35
PID 2588 wrote to memory of 2444	2588	cmd.exe	35
PID 2588 wrote to memory of 2852	2588	cmd.exe	38
PID 2588 wrote to memory of 2852	2588	cmd.exe	38
PID 2588 wrote to memory of 2852	2588	cmd.exe	38
PID 1704 wrote to memory of 2876	1704	svchost.exe	40
PID 1704 wrote to memory of 2876	1704	svchost.exe	40
PID 1704 wrote to memory of 2876	1704	svchost.exe	40
PID 2876 wrote to memory of 2900	2876	cmd.exe	42
PID 2876 wrote to memory of 2900	2876	cmd.exe	42
PID 2876 wrote to memory of 2900	2876	cmd.exe	42
PID 2876 wrote to memory of 2888	2876	cmd.exe	43
PID 2876 wrote to memory of 2888	2876	cmd.exe	43
PID 2876 wrote to memory of 2888	2876	cmd.exe	43
PID 1704 wrote to memory of 2432	1704	svchost.exe	44
PID 1704 wrote to memory of 2432	1704	svchost.exe	44
PID 1704 wrote to memory of 2432	1704	svchost.exe	44
PID 2432 wrote to memory of 2880	2432	cmd.exe	46
PID 2432 wrote to memory of 2880	2432	cmd.exe	46
PID 2432 wrote to memory of 2880	2432	cmd.exe	46
PID 1704 wrote to memory of 2240	1704	svchost.exe	50
PID 1704 wrote to memory of 2240	1704	svchost.exe	50
PID 1704 wrote to memory of 2240	1704	svchost.exe	50
PID 2240 wrote to memory of 2404	2240	rundll32.exe	51
PID 2240 wrote to memory of 2404	2240	rundll32.exe	51
PID 2240 wrote to memory of 2404	2240	rundll32.exe	51
PID 2240 wrote to memory of 2404	2240	rundll32.exe	51

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\2024-08-15_947041f93f370b6a3668cbe0ac401582_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-15_947041f93f370b6a3668cbe0ac401582_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2500
- 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:1704
- - 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:2588
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2444
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2852
- - 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:2876
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2900
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2888
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2432
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:2880
- - C:\Windows\system32\rundll32.exe
    "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Roaming\Beni Oku !
    3⤵
    - Modifies registry class
    - Suspicious use of WriteProcessMemory
    PID:2240
  - - 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\Beni Oku !"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of SetWindowsHookEx
      PID:2404

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1300

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2944

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:2420

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:444

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

System Location Discovery

T1614

System Language Discovery

T1614.001

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\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
55f3e2f09a0862c7e615868d2f66c20c

SHA1
327de17168201f8cfe53118cab99e4c8b9e66646

SHA256
d2a321b477a05769675a8d8fe0725d8918cb49d81ac5e55bee024e97ad269a86

SHA512
afe9c127dea41cd92463b429b957fe9d96b79c049943ab2dca13f1b0ad0a680f707dbaab12fb0ad3527b3a008f4dfde114db783fda1c8874b21a6511fd8f464d

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

Filesize
1.8MB

MD5
947041f93f370b6a3668cbe0ac401582

SHA1
5e0664cbb97f5a5563f122b99f6bd620a81b2f37

SHA256
412d40720095f3a6c8cbae9bb4cae40e4d3cb372962b11795792eec61f3de690

SHA512
61dbb400f4c3f29ab0154ab2fd13fa57b5788b6f5f56b24c354e29ecd5b6a926703b3244ec39793ddae24ec3ae5c38691bdf413cced83b11bbf0b33f3fdbd62b

Download Submit
C:\Users\Admin\Documents\Beni Oku !

Filesize
964B

MD5
4217b8b83ce3c3f70029a056546f8fd0

SHA1
487cdb5733d073a0427418888e8f7070fe782a03

SHA256
7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121

SHA512
2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740

Download Submit
memory/1704-7-0x0000000000AF0000-0x0000000000CBC000-memory.dmp

Filesize
1.8MB

Download
memory/1704-25-0x000007FEF6060000-0x000007FEF6A4C000-memory.dmp

Filesize
9.9MB

Download
memory/1704-32-0x000007FEF6060000-0x000007FEF6A4C000-memory.dmp

Filesize
9.9MB

Download
memory/1704-425-0x000007FEF6060000-0x000007FEF6A4C000-memory.dmp

Filesize
9.9MB

Download
memory/2500-0-0x000007FEF6063000-0x000007FEF6064000-memory.dmp

Filesize
4KB

Download
memory/2500-1-0x0000000001250000-0x000000000141C000-memory.dmp

Filesize
1.8MB

Download