chaos | e788b672c860e6088ddb0b042675f3ce2999bef473479598108896ffbb916bea

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
11-07-2024 05:00

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General

Target

2024-07-11_70b000a4afb6cd659c70068ae9a8da4e_wannacry.exe
Size

5.0MB
MD5

70b000a4afb6cd659c70068ae9a8da4e
SHA1

8e9f0c75ba7f08932aab4aac86ee33340314d879
SHA256

e788b672c860e6088ddb0b042675f3ce2999bef473479598108896ffbb916bea
SHA512

f40aae321ecde244521177d7d6a5127592c3e64c6babc27952464344e8c4f4f5449be8984c2ddb69ab6955b4537c2c717a968317b317d528f5f0d3861de61854
SSDEEP

24576:xGNDuv4+PU64AoPrWdbb5+HRBlwOdXlI1y2Y5LwUMlx3IXVjUlRnua/OZuNG12Ho:ayyaQHzN9eOR2Rnu2GBcH56F2u0

Score

10^/10

chaos defense_evasion evasion execution impact ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\Documents\read me.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/2104-1-0x0000000001170000-0x0000000001674000-memory.dmp	family_chaos
behavioral1/files/0x0007000000012118-5.dat	family_chaos
behavioral1/memory/2080-8-0x00000000012B0000-0x00000000017B4000-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
1652	bcdedit.exe
932	bcdedit.exe

Renames multiple (234) 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
1928	wbadmin.exe

Drops startup file 3 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Runtime Broker.url	Runtime Broker.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini	Runtime Broker.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\read me.txt	Runtime Broker.exe

Executes dropped EXE 1 IoCs

pid	Process
2080	Runtime Broker.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\Sample Music\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Public\Videos\Sample Videos\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini	Runtime Broker.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-2958949473-3205530200-1453100116-1000\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\Saved Games\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\Favorites\Links for United States\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini	Runtime Broker.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	Runtime Broker.exe

Sets desktop wallpaper using registry 2 TTPs 2 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Pictures\\My Wallpaper.jpg"	Runtime Broker.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\vlj3d4fqp.jpg"	Runtime Broker.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
2924	vssadmin.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2080	Runtime Broker.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2104	2024-07-11_70b000a4afb6cd659c70068ae9a8da4e_wannacry.exe
2104	2024-07-11_70b000a4afb6cd659c70068ae9a8da4e_wannacry.exe
2104	2024-07-11_70b000a4afb6cd659c70068ae9a8da4e_wannacry.exe
2080	Runtime Broker.exe
2080	Runtime Broker.exe
2080	Runtime Broker.exe
2080	Runtime Broker.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2104	2024-07-11_70b000a4afb6cd659c70068ae9a8da4e_wannacry.exe
Token: SeDebugPrivilege	2080	Runtime Broker.exe
Token: SeBackupPrivilege	1432	vssvc.exe
Token: SeRestorePrivilege	1432	vssvc.exe
Token: SeAuditPrivilege	1432	vssvc.exe
Token: SeIncreaseQuotaPrivilege	836	WMIC.exe
Token: SeSecurityPrivilege	836	WMIC.exe
Token: SeTakeOwnershipPrivilege	836	WMIC.exe
Token: SeLoadDriverPrivilege	836	WMIC.exe
Token: SeSystemProfilePrivilege	836	WMIC.exe
Token: SeSystemtimePrivilege	836	WMIC.exe
Token: SeProfSingleProcessPrivilege	836	WMIC.exe
Token: SeIncBasePriorityPrivilege	836	WMIC.exe
Token: SeCreatePagefilePrivilege	836	WMIC.exe
Token: SeBackupPrivilege	836	WMIC.exe
Token: SeRestorePrivilege	836	WMIC.exe
Token: SeShutdownPrivilege	836	WMIC.exe
Token: SeDebugPrivilege	836	WMIC.exe
Token: SeSystemEnvironmentPrivilege	836	WMIC.exe
Token: SeRemoteShutdownPrivilege	836	WMIC.exe
Token: SeUndockPrivilege	836	WMIC.exe
Token: SeManageVolumePrivilege	836	WMIC.exe
Token: 33	836	WMIC.exe
Token: 34	836	WMIC.exe
Token: 35	836	WMIC.exe
Token: SeIncreaseQuotaPrivilege	836	WMIC.exe
Token: SeSecurityPrivilege	836	WMIC.exe
Token: SeTakeOwnershipPrivilege	836	WMIC.exe
Token: SeLoadDriverPrivilege	836	WMIC.exe
Token: SeSystemProfilePrivilege	836	WMIC.exe
Token: SeSystemtimePrivilege	836	WMIC.exe
Token: SeProfSingleProcessPrivilege	836	WMIC.exe
Token: SeIncBasePriorityPrivilege	836	WMIC.exe
Token: SeCreatePagefilePrivilege	836	WMIC.exe
Token: SeBackupPrivilege	836	WMIC.exe
Token: SeRestorePrivilege	836	WMIC.exe
Token: SeShutdownPrivilege	836	WMIC.exe
Token: SeDebugPrivilege	836	WMIC.exe
Token: SeSystemEnvironmentPrivilege	836	WMIC.exe
Token: SeRemoteShutdownPrivilege	836	WMIC.exe
Token: SeUndockPrivilege	836	WMIC.exe
Token: SeManageVolumePrivilege	836	WMIC.exe
Token: 33	836	WMIC.exe
Token: 34	836	WMIC.exe
Token: 35	836	WMIC.exe
Token: SeBackupPrivilege	1372	wbengine.exe
Token: SeRestorePrivilege	1372	wbengine.exe
Token: SeSecurityPrivilege	1372	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2104 wrote to memory of 2080	2104	2024-07-11_70b000a4afb6cd659c70068ae9a8da4e_wannacry.exe	30
PID 2104 wrote to memory of 2080	2104	2024-07-11_70b000a4afb6cd659c70068ae9a8da4e_wannacry.exe	30
PID 2104 wrote to memory of 2080	2104	2024-07-11_70b000a4afb6cd659c70068ae9a8da4e_wannacry.exe	30
PID 2080 wrote to memory of 2904	2080	Runtime Broker.exe	32
PID 2080 wrote to memory of 2904	2080	Runtime Broker.exe	32
PID 2080 wrote to memory of 2904	2080	Runtime Broker.exe	32
PID 2904 wrote to memory of 2924	2904	cmd.exe	34
PID 2904 wrote to memory of 2924	2904	cmd.exe	34
PID 2904 wrote to memory of 2924	2904	cmd.exe	34
PID 2904 wrote to memory of 836	2904	cmd.exe	37
PID 2904 wrote to memory of 836	2904	cmd.exe	37
PID 2904 wrote to memory of 836	2904	cmd.exe	37
PID 2080 wrote to memory of 1388	2080	Runtime Broker.exe	39
PID 2080 wrote to memory of 1388	2080	Runtime Broker.exe	39
PID 2080 wrote to memory of 1388	2080	Runtime Broker.exe	39
PID 1388 wrote to memory of 1652	1388	cmd.exe	41
PID 1388 wrote to memory of 1652	1388	cmd.exe	41
PID 1388 wrote to memory of 1652	1388	cmd.exe	41
PID 1388 wrote to memory of 932	1388	cmd.exe	42
PID 1388 wrote to memory of 932	1388	cmd.exe	42
PID 1388 wrote to memory of 932	1388	cmd.exe	42
PID 2080 wrote to memory of 2180	2080	Runtime Broker.exe	43
PID 2080 wrote to memory of 2180	2080	Runtime Broker.exe	43
PID 2080 wrote to memory of 2180	2080	Runtime Broker.exe	43
PID 2180 wrote to memory of 1928	2180	cmd.exe	45
PID 2180 wrote to memory of 1928	2180	cmd.exe	45
PID 2180 wrote to memory of 1928	2180	cmd.exe	45
PID 2080 wrote to memory of 2572	2080	Runtime Broker.exe	49
PID 2080 wrote to memory of 2572	2080	Runtime Broker.exe	49
PID 2080 wrote to memory of 2572	2080	Runtime Broker.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\2024-07-11_70b000a4afb6cd659c70068ae9a8da4e_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-11_70b000a4afb6cd659c70068ae9a8da4e_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2104
- C:\Users\Admin\AppData\Roaming\Runtime Broker.exe
  "C:\Users\Admin\AppData\Roaming\Runtime Broker.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:2080
- - 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:2904
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2924
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:836
- - 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:1388
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1652
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:932
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2180
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:1928
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read me.txt
    3⤵
    PID:2572

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1432

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1372

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:2176

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:808

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

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\Runtime Broker.exe

Filesize
5.0MB

MD5
70b000a4afb6cd659c70068ae9a8da4e

SHA1
8e9f0c75ba7f08932aab4aac86ee33340314d879

SHA256
e788b672c860e6088ddb0b042675f3ce2999bef473479598108896ffbb916bea

SHA512
f40aae321ecde244521177d7d6a5127592c3e64c6babc27952464344e8c4f4f5449be8984c2ddb69ab6955b4537c2c717a968317b317d528f5f0d3861de61854

Download Submit
C:\Users\Admin\Documents\read me.txt

Filesize
964B

MD5
4217b8b83ce3c3f70029a056546f8fd0

SHA1
487cdb5733d073a0427418888e8f7070fe782a03

SHA256
7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121

SHA512
2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740

Download Submit
memory/2080-7-0x000007FEF4A23000-0x000007FEF4A24000-memory.dmp

Filesize
4KB

Download
memory/2080-8-0x00000000012B0000-0x00000000017B4000-memory.dmp

Filesize
5.0MB

Download
memory/2080-28-0x000007FEF4A20000-0x000007FEF540C000-memory.dmp

Filesize
9.9MB

Download
memory/2080-533-0x000007FEF4A23000-0x000007FEF4A24000-memory.dmp

Filesize
4KB

Download
memory/2080-534-0x000007FEF4A20000-0x000007FEF540C000-memory.dmp

Filesize
9.9MB

Download
memory/2104-0-0x000007FEF5413000-0x000007FEF5414000-memory.dmp

Filesize
4KB

Download
memory/2104-1-0x0000000001170000-0x0000000001674000-memory.dmp

Filesize
5.0MB

Download