chaos | c01d10403bbb88f5106051ff41c0969bea0a589c75f1774ee2e42a76708c1ba3

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22-11-2024 02:07

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General

Target

2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe
Size

644KB
MD5

b898f3c309d4e2a25076c6a0fac476e8
SHA1

51bfd7cd070ea897ad4d12d2e068511eeb226372
SHA256

c01d10403bbb88f5106051ff41c0969bea0a589c75f1774ee2e42a76708c1ba3
SHA512

dcaab5312d7183651e834aeb7e5f7c20a999f24379d44c35305c74e8e9e53611f11d0ca4f59b91277501510398c80b49aacb252454e9a074a02d0ae59f836681
SSDEEP

12288:U0SZy1zq9E8aaKIgYLpanJhT5CKaL8jVVCy+9pLvh5dSsRiId7X+l4qrB9Brk3y3:HWEBqjJ5tqlR

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 $8,000. 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: 0.09 BTC Bitcoin Address: bc1q239s2dve6uwchxwwhuy89zgc7zlaj7fyl6cy3e After payment Send email to ([email protected])

Emails

[email protected]

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/2996-1-0x0000000001040000-0x00000000010E6000-memory.dmp	family_chaos
behavioral1/files/0x0007000000018731-5.dat	family_chaos
behavioral1/memory/2376-7-0x0000000000D00000-0x0000000000DA6000-memory.dmp	family_chaos

Chaos 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
1656	bcdedit.exe
1288	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
1436	wbadmin.exe

Drops startup file 3 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\read_it.txt	svchost.exe
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

Executes dropped EXE 1 IoCs

pid	Process
2376	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\Public\Pictures\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\Sample Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\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\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\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\Internet Explorer\Quick Launch\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\Public\Documents\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\Internet Explorer\Quick Launch\User Pinned\TaskBar\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\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\Saved Games\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\Programs\Accessories\System Tools\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\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\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\Admin\Pictures\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-1-5-21-4177215427-74451935-3209572229-1000\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

Sets desktop wallpaper using registry 2 TTPs 2 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\77jktvrh4.jpg"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Pictures\\My Wallpaper.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 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
2452	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2464	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2376	svchost.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2996	2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe
2996	2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe
2996	2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe
2376	svchost.exe
2376	svchost.exe
2376	svchost.exe
2376	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2996	2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe
Token: SeDebugPrivilege	2376	svchost.exe
Token: SeBackupPrivilege	1732	vssvc.exe
Token: SeRestorePrivilege	1732	vssvc.exe
Token: SeAuditPrivilege	1732	vssvc.exe
Token: SeIncreaseQuotaPrivilege	2880	WMIC.exe
Token: SeSecurityPrivilege	2880	WMIC.exe
Token: SeTakeOwnershipPrivilege	2880	WMIC.exe
Token: SeLoadDriverPrivilege	2880	WMIC.exe
Token: SeSystemProfilePrivilege	2880	WMIC.exe
Token: SeSystemtimePrivilege	2880	WMIC.exe
Token: SeProfSingleProcessPrivilege	2880	WMIC.exe
Token: SeIncBasePriorityPrivilege	2880	WMIC.exe
Token: SeCreatePagefilePrivilege	2880	WMIC.exe
Token: SeBackupPrivilege	2880	WMIC.exe
Token: SeRestorePrivilege	2880	WMIC.exe
Token: SeShutdownPrivilege	2880	WMIC.exe
Token: SeDebugPrivilege	2880	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2880	WMIC.exe
Token: SeRemoteShutdownPrivilege	2880	WMIC.exe
Token: SeUndockPrivilege	2880	WMIC.exe
Token: SeManageVolumePrivilege	2880	WMIC.exe
Token: 33	2880	WMIC.exe
Token: 34	2880	WMIC.exe
Token: 35	2880	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2880	WMIC.exe
Token: SeSecurityPrivilege	2880	WMIC.exe
Token: SeTakeOwnershipPrivilege	2880	WMIC.exe
Token: SeLoadDriverPrivilege	2880	WMIC.exe
Token: SeSystemProfilePrivilege	2880	WMIC.exe
Token: SeSystemtimePrivilege	2880	WMIC.exe
Token: SeProfSingleProcessPrivilege	2880	WMIC.exe
Token: SeIncBasePriorityPrivilege	2880	WMIC.exe
Token: SeCreatePagefilePrivilege	2880	WMIC.exe
Token: SeBackupPrivilege	2880	WMIC.exe
Token: SeRestorePrivilege	2880	WMIC.exe
Token: SeShutdownPrivilege	2880	WMIC.exe
Token: SeDebugPrivilege	2880	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2880	WMIC.exe
Token: SeRemoteShutdownPrivilege	2880	WMIC.exe
Token: SeUndockPrivilege	2880	WMIC.exe
Token: SeManageVolumePrivilege	2880	WMIC.exe
Token: 33	2880	WMIC.exe
Token: 34	2880	WMIC.exe
Token: 35	2880	WMIC.exe
Token: SeBackupPrivilege	1652	wbengine.exe
Token: SeRestorePrivilege	1652	wbengine.exe
Token: SeSecurityPrivilege	1652	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2996 wrote to memory of 2376	2996	2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe	31
PID 2996 wrote to memory of 2376	2996	2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe	31
PID 2996 wrote to memory of 2376	2996	2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe	31
PID 2376 wrote to memory of 1676	2376	svchost.exe	33
PID 2376 wrote to memory of 1676	2376	svchost.exe	33
PID 2376 wrote to memory of 1676	2376	svchost.exe	33
PID 1676 wrote to memory of 2452	1676	cmd.exe	35
PID 1676 wrote to memory of 2452	1676	cmd.exe	35
PID 1676 wrote to memory of 2452	1676	cmd.exe	35
PID 1676 wrote to memory of 2880	1676	cmd.exe	38
PID 1676 wrote to memory of 2880	1676	cmd.exe	38
PID 1676 wrote to memory of 2880	1676	cmd.exe	38
PID 2376 wrote to memory of 2888	2376	svchost.exe	40
PID 2376 wrote to memory of 2888	2376	svchost.exe	40
PID 2376 wrote to memory of 2888	2376	svchost.exe	40
PID 2888 wrote to memory of 1656	2888	cmd.exe	42
PID 2888 wrote to memory of 1656	2888	cmd.exe	42
PID 2888 wrote to memory of 1656	2888	cmd.exe	42
PID 2888 wrote to memory of 1288	2888	cmd.exe	43
PID 2888 wrote to memory of 1288	2888	cmd.exe	43
PID 2888 wrote to memory of 1288	2888	cmd.exe	43
PID 2376 wrote to memory of 1788	2376	svchost.exe	44
PID 2376 wrote to memory of 1788	2376	svchost.exe	44
PID 2376 wrote to memory of 1788	2376	svchost.exe	44
PID 1788 wrote to memory of 1436	1788	cmd.exe	46
PID 1788 wrote to memory of 1436	1788	cmd.exe	46
PID 1788 wrote to memory of 1436	1788	cmd.exe	46
PID 2376 wrote to memory of 2464	2376	svchost.exe	50
PID 2376 wrote to memory of 2464	2376	svchost.exe	50
PID 2376 wrote to memory of 2464	2376	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\2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2996
- 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:2376
- - 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:1676
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2452
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2880
- - 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:2888
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1656
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1288
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1788
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:1436
- - 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:2464

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1732

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1652

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:1696

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:664

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

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

Defacement

T1491

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

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

Filesize
644KB

MD5
b898f3c309d4e2a25076c6a0fac476e8

SHA1
51bfd7cd070ea897ad4d12d2e068511eeb226372

SHA256
c01d10403bbb88f5106051ff41c0969bea0a589c75f1774ee2e42a76708c1ba3

SHA512
dcaab5312d7183651e834aeb7e5f7c20a999f24379d44c35305c74e8e9e53611f11d0ca4f59b91277501510398c80b49aacb252454e9a074a02d0ae59f836681

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

Filesize
1006B

MD5
b7b332bf7b22a4e24f58e52d9516f07d

SHA1
1feb5fc581cdcc602efd11bb27e270db1d74a739

SHA256
3d52695838d8dfac2d1e65ff876efd8e9d11dcbab07630eaf1a8313548d885b2

SHA512
d1581b29654b625c4887d4d9a6eb733354870f2da77e7abbdcb77c6caed4ba1cb64f3c873a9034769181aa4f5d07606231b20d829c28df4f282dd280cd71ce4d

Download Submit
memory/2376-7-0x0000000000D00000-0x0000000000DA6000-memory.dmp

Filesize
664KB

Download
memory/2376-8-0x000007FEF5B60000-0x000007FEF654C000-memory.dmp

Filesize
9.9MB

Download
memory/2376-13-0x000007FEF5B60000-0x000007FEF654C000-memory.dmp

Filesize
9.9MB

Download
memory/2376-483-0x000007FEF5B60000-0x000007FEF654C000-memory.dmp

Filesize
9.9MB

Download
memory/2996-0-0x000007FEF5B63000-0x000007FEF5B64000-memory.dmp

Filesize
4KB

Download
memory/2996-1-0x0000000001040000-0x00000000010E6000-memory.dmp

Filesize
664KB

Download