chaos | c6729eb170a6209a351d4a8d99efe0bd7848d08d5ac9cb086f1d8bad625dbc7a

Analysis

max time kernel
117s
max time network
121s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
20/03/2024, 08:42

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General

Target

2024-03-20_12b458301d7cd8f7f1536a62efda148e_wannacry.exe
Size

664KB
MD5

12b458301d7cd8f7f1536a62efda148e
SHA1

60fef33fc40f7afbd23472a3c9c25e639b3122af
SHA256

c6729eb170a6209a351d4a8d99efe0bd7848d08d5ac9cb086f1d8bad625dbc7a
SHA512

239b524217f0e8aa80c4f339ba22692b3b1f06e61182cf8dcbc3e9e6dac02c418bf45c4d88c3ae7e12fb0ee1f5b808accf9fe11177161b5982915fb9373d2417
SSDEEP

12288:Hb4yFHDU7hOYN/W3o3HOKBxWNDc6hCKvaSMSVupdDp0tbtYcOoIlPj3rw/F/F56q:HZ8N8K3Wq6CS8WGogAeU5+6NA2

Score

10^/10

chaos evasion 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 5 IoCs

resource	yara_rule
behavioral1/memory/2772-0-0x00000000012C0000-0x000000000136C000-memory.dmp	family_chaos
behavioral1/files/0x000900000001222b-5.dat	family_chaos
behavioral1/memory/1612-7-0x0000000000190000-0x000000000023C000-memory.dmp	family_chaos
behavioral1/memory/1612-11-0x000000001B080000-0x000000001B100000-memory.dmp	family_chaos
behavioral1/memory/1612-474-0x000000001B080000-0x000000001B100000-memory.dmp	family_chaos

Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1070.004

Inhibit System Recovery
T1490

Detects command variations typically used by ransomware 5 IoCs

resource	yara_rule
behavioral1/memory/2772-0-0x00000000012C0000-0x000000000136C000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/files/0x000900000001222b-5.dat	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/memory/1612-7-0x0000000000190000-0x000000000023C000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/memory/1612-11-0x000000001B080000-0x000000001B100000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/memory/1612-474-0x000000001B080000-0x000000001B100000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
3036	bcdedit.exe
3064	bcdedit.exe

Renames multiple (204) 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
1196	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
1612	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\Sample Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\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\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\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\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\Public\Videos\Sample Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\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\Favorites\Links\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\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\Maintenance\Desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-330940541-141609230-1670313778-1000\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\Public\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\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\Saved Games\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\Internet Explorer\Quick Launch\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\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-1-5-21-330940541-141609230-1670313778-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\5p6u0adrh.jpg"	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 2 TTPs 1 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

pid	Process
2204	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1520	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1612	svchost.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2772	2024-03-20_12b458301d7cd8f7f1536a62efda148e_wannacry.exe
2772	2024-03-20_12b458301d7cd8f7f1536a62efda148e_wannacry.exe
1612	svchost.exe
1612	svchost.exe
1612	svchost.exe
1612	svchost.exe
1612	svchost.exe
1612	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2772	2024-03-20_12b458301d7cd8f7f1536a62efda148e_wannacry.exe
Token: SeDebugPrivilege	1612	svchost.exe
Token: SeBackupPrivilege	1956	vssvc.exe
Token: SeRestorePrivilege	1956	vssvc.exe
Token: SeAuditPrivilege	1956	vssvc.exe
Token: SeIncreaseQuotaPrivilege	528	WMIC.exe
Token: SeSecurityPrivilege	528	WMIC.exe
Token: SeTakeOwnershipPrivilege	528	WMIC.exe
Token: SeLoadDriverPrivilege	528	WMIC.exe
Token: SeSystemProfilePrivilege	528	WMIC.exe
Token: SeSystemtimePrivilege	528	WMIC.exe
Token: SeProfSingleProcessPrivilege	528	WMIC.exe
Token: SeIncBasePriorityPrivilege	528	WMIC.exe
Token: SeCreatePagefilePrivilege	528	WMIC.exe
Token: SeBackupPrivilege	528	WMIC.exe
Token: SeRestorePrivilege	528	WMIC.exe
Token: SeShutdownPrivilege	528	WMIC.exe
Token: SeDebugPrivilege	528	WMIC.exe
Token: SeSystemEnvironmentPrivilege	528	WMIC.exe
Token: SeRemoteShutdownPrivilege	528	WMIC.exe
Token: SeUndockPrivilege	528	WMIC.exe
Token: SeManageVolumePrivilege	528	WMIC.exe
Token: 33	528	WMIC.exe
Token: 34	528	WMIC.exe
Token: 35	528	WMIC.exe
Token: SeIncreaseQuotaPrivilege	528	WMIC.exe
Token: SeSecurityPrivilege	528	WMIC.exe
Token: SeTakeOwnershipPrivilege	528	WMIC.exe
Token: SeLoadDriverPrivilege	528	WMIC.exe
Token: SeSystemProfilePrivilege	528	WMIC.exe
Token: SeSystemtimePrivilege	528	WMIC.exe
Token: SeProfSingleProcessPrivilege	528	WMIC.exe
Token: SeIncBasePriorityPrivilege	528	WMIC.exe
Token: SeCreatePagefilePrivilege	528	WMIC.exe
Token: SeBackupPrivilege	528	WMIC.exe
Token: SeRestorePrivilege	528	WMIC.exe
Token: SeShutdownPrivilege	528	WMIC.exe
Token: SeDebugPrivilege	528	WMIC.exe
Token: SeSystemEnvironmentPrivilege	528	WMIC.exe
Token: SeRemoteShutdownPrivilege	528	WMIC.exe
Token: SeUndockPrivilege	528	WMIC.exe
Token: SeManageVolumePrivilege	528	WMIC.exe
Token: 33	528	WMIC.exe
Token: 34	528	WMIC.exe
Token: 35	528	WMIC.exe
Token: SeBackupPrivilege	964	wbengine.exe
Token: SeRestorePrivilege	964	wbengine.exe
Token: SeSecurityPrivilege	964	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2772 wrote to memory of 1612	2772	2024-03-20_12b458301d7cd8f7f1536a62efda148e_wannacry.exe	28
PID 2772 wrote to memory of 1612	2772	2024-03-20_12b458301d7cd8f7f1536a62efda148e_wannacry.exe	28
PID 2772 wrote to memory of 1612	2772	2024-03-20_12b458301d7cd8f7f1536a62efda148e_wannacry.exe	28
PID 1612 wrote to memory of 2644	1612	svchost.exe	30
PID 1612 wrote to memory of 2644	1612	svchost.exe	30
PID 1612 wrote to memory of 2644	1612	svchost.exe	30
PID 2644 wrote to memory of 2204	2644	cmd.exe	32
PID 2644 wrote to memory of 2204	2644	cmd.exe	32
PID 2644 wrote to memory of 2204	2644	cmd.exe	32
PID 2644 wrote to memory of 528	2644	cmd.exe	36
PID 2644 wrote to memory of 528	2644	cmd.exe	36
PID 2644 wrote to memory of 528	2644	cmd.exe	36
PID 1612 wrote to memory of 2292	1612	svchost.exe	38
PID 1612 wrote to memory of 2292	1612	svchost.exe	38
PID 1612 wrote to memory of 2292	1612	svchost.exe	38
PID 2292 wrote to memory of 3036	2292	cmd.exe	40
PID 2292 wrote to memory of 3036	2292	cmd.exe	40
PID 2292 wrote to memory of 3036	2292	cmd.exe	40
PID 2292 wrote to memory of 3064	2292	cmd.exe	41
PID 2292 wrote to memory of 3064	2292	cmd.exe	41
PID 2292 wrote to memory of 3064	2292	cmd.exe	41
PID 1612 wrote to memory of 2148	1612	svchost.exe	42
PID 1612 wrote to memory of 2148	1612	svchost.exe	42
PID 1612 wrote to memory of 2148	1612	svchost.exe	42
PID 2148 wrote to memory of 1196	2148	cmd.exe	44
PID 2148 wrote to memory of 1196	2148	cmd.exe	44
PID 2148 wrote to memory of 1196	2148	cmd.exe	44
PID 1612 wrote to memory of 1520	1612	svchost.exe	50
PID 1612 wrote to memory of 1520	1612	svchost.exe	50
PID 1612 wrote to memory of 1520	1612	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\2024-03-20_12b458301d7cd8f7f1536a62efda148e_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-20_12b458301d7cd8f7f1536a62efda148e_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2772
- 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:1612
- - 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:2644
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2204
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:528
- - 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:2292
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:3036
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:3064
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2148
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:1196
- - 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:1520

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1956

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:964

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:1504

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:2232

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Privilege Escalation

Defense Evasion

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\svchost.exe

Filesize
664KB

MD5
12b458301d7cd8f7f1536a62efda148e

SHA1
60fef33fc40f7afbd23472a3c9c25e639b3122af

SHA256
c6729eb170a6209a351d4a8d99efe0bd7848d08d5ac9cb086f1d8bad625dbc7a

SHA512
239b524217f0e8aa80c4f339ba22692b3b1f06e61182cf8dcbc3e9e6dac02c418bf45c4d88c3ae7e12fb0ee1f5b808accf9fe11177161b5982915fb9373d2417

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

Filesize
964B

MD5
4217b8b83ce3c3f70029a056546f8fd0

SHA1
487cdb5733d073a0427418888e8f7070fe782a03

SHA256
7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121

SHA512
2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740

Download Submit
memory/1612-7-0x0000000000190000-0x000000000023C000-memory.dmp

Filesize
688KB

Download
memory/1612-9-0x000007FEF5C40000-0x000007FEF662C000-memory.dmp

Filesize
9.9MB

Download
memory/1612-11-0x000000001B080000-0x000000001B100000-memory.dmp

Filesize
512KB

Download
memory/1612-473-0x000007FEF5C40000-0x000007FEF662C000-memory.dmp

Filesize
9.9MB

Download
memory/1612-474-0x000000001B080000-0x000000001B100000-memory.dmp

Filesize
512KB

Download
memory/2772-0-0x00000000012C0000-0x000000000136C000-memory.dmp

Filesize
688KB

Download
memory/2772-1-0x000007FEF5C40000-0x000007FEF662C000-memory.dmp

Filesize
9.9MB

Download
memory/2772-8-0x000007FEF5C40000-0x000007FEF662C000-memory.dmp

Filesize
9.9MB

Download