chaos | 29fd8c24e498db51eaf961e3f2a5702f50b3b60892979d9eee14c5cde35fdfdb

Analysis

max time kernel
117s
max time network
123s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
22-04-2024 13:17

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General

Target

2024-04-22_e9b220e484d0526c883000011902314b_destroyer_wannacry.exe
Size

46KB
MD5

e9b220e484d0526c883000011902314b
SHA1

0fd828b30b82decd203e580d54591a39b41c6795
SHA256

29fd8c24e498db51eaf961e3f2a5702f50b3b60892979d9eee14c5cde35fdfdb
SHA512

f65b510f24fa044361392c0b15bf985b94134969de65533fa3070e0dfb2a25fa789561babf9e477750030247b1e54d9fe98b4c19322c1d5f735458d52900d575
SSDEEP

768:jqo2YOpYxQ9r9Wu9F8eXbwUpQYzF/VtH0NVHD7lxwp1Eev7H8l/uwee8:Oo2YpQ9r9Wu9pz9H0fjaEgHEn8

Score

10^/10

chaos evasion ransomware spyware stealer

Malware Config

Extracted

Path

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

Ransom Note

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.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 $1m. Payment can be made in Bitcoin only. Payment information: 15.34 BTC Bitcoin Address: bc1qlnzcep423

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/3048-0-0x0000000000800000-0x0000000000812000-memory.dmp	family_chaos
behavioral1/files/0x000d000000014466-5.dat	family_chaos
behavioral1/memory/1296-7-0x0000000000FC0000-0x0000000000FD2000-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 3 IoCs

resource	yara_rule
behavioral1/memory/3048-0-0x0000000000800000-0x0000000000812000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/files/0x000d000000014466-5.dat	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/memory/1296-7-0x0000000000FC0000-0x0000000000FD2000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
2300	bcdedit.exe
1616	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
2376	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
1296	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\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\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\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\Sample Music\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\Public\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\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\User Pinned\TaskBar\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\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\Maintenance\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\Contacts\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Videos\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\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\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\Windows\Start Menu\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\Pictures\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\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Searches\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\\ymi69lgnh.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
584	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1100	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1296	svchost.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3048	2024-04-22_e9b220e484d0526c883000011902314b_destroyer_wannacry.exe
3048	2024-04-22_e9b220e484d0526c883000011902314b_destroyer_wannacry.exe
1296	svchost.exe
1296	svchost.exe
1296	svchost.exe
1296	svchost.exe
1296	svchost.exe
1296	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	3048	2024-04-22_e9b220e484d0526c883000011902314b_destroyer_wannacry.exe
Token: SeDebugPrivilege	1296	svchost.exe
Token: SeBackupPrivilege	1872	vssvc.exe
Token: SeRestorePrivilege	1872	vssvc.exe
Token: SeAuditPrivilege	1872	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1864	WMIC.exe
Token: SeSecurityPrivilege	1864	WMIC.exe
Token: SeTakeOwnershipPrivilege	1864	WMIC.exe
Token: SeLoadDriverPrivilege	1864	WMIC.exe
Token: SeSystemProfilePrivilege	1864	WMIC.exe
Token: SeSystemtimePrivilege	1864	WMIC.exe
Token: SeProfSingleProcessPrivilege	1864	WMIC.exe
Token: SeIncBasePriorityPrivilege	1864	WMIC.exe
Token: SeCreatePagefilePrivilege	1864	WMIC.exe
Token: SeBackupPrivilege	1864	WMIC.exe
Token: SeRestorePrivilege	1864	WMIC.exe
Token: SeShutdownPrivilege	1864	WMIC.exe
Token: SeDebugPrivilege	1864	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1864	WMIC.exe
Token: SeRemoteShutdownPrivilege	1864	WMIC.exe
Token: SeUndockPrivilege	1864	WMIC.exe
Token: SeManageVolumePrivilege	1864	WMIC.exe
Token: 33	1864	WMIC.exe
Token: 34	1864	WMIC.exe
Token: 35	1864	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1864	WMIC.exe
Token: SeSecurityPrivilege	1864	WMIC.exe
Token: SeTakeOwnershipPrivilege	1864	WMIC.exe
Token: SeLoadDriverPrivilege	1864	WMIC.exe
Token: SeSystemProfilePrivilege	1864	WMIC.exe
Token: SeSystemtimePrivilege	1864	WMIC.exe
Token: SeProfSingleProcessPrivilege	1864	WMIC.exe
Token: SeIncBasePriorityPrivilege	1864	WMIC.exe
Token: SeCreatePagefilePrivilege	1864	WMIC.exe
Token: SeBackupPrivilege	1864	WMIC.exe
Token: SeRestorePrivilege	1864	WMIC.exe
Token: SeShutdownPrivilege	1864	WMIC.exe
Token: SeDebugPrivilege	1864	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1864	WMIC.exe
Token: SeRemoteShutdownPrivilege	1864	WMIC.exe
Token: SeUndockPrivilege	1864	WMIC.exe
Token: SeManageVolumePrivilege	1864	WMIC.exe
Token: 33	1864	WMIC.exe
Token: 34	1864	WMIC.exe
Token: 35	1864	WMIC.exe
Token: SeBackupPrivilege	2296	wbengine.exe
Token: SeRestorePrivilege	2296	wbengine.exe
Token: SeSecurityPrivilege	2296	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3048 wrote to memory of 1296	3048	2024-04-22_e9b220e484d0526c883000011902314b_destroyer_wannacry.exe	28
PID 3048 wrote to memory of 1296	3048	2024-04-22_e9b220e484d0526c883000011902314b_destroyer_wannacry.exe	28
PID 3048 wrote to memory of 1296	3048	2024-04-22_e9b220e484d0526c883000011902314b_destroyer_wannacry.exe	28
PID 1296 wrote to memory of 652	1296	svchost.exe	30
PID 1296 wrote to memory of 652	1296	svchost.exe	30
PID 1296 wrote to memory of 652	1296	svchost.exe	30
PID 652 wrote to memory of 584	652	cmd.exe	32
PID 652 wrote to memory of 584	652	cmd.exe	32
PID 652 wrote to memory of 584	652	cmd.exe	32
PID 652 wrote to memory of 1864	652	cmd.exe	36
PID 652 wrote to memory of 1864	652	cmd.exe	36
PID 652 wrote to memory of 1864	652	cmd.exe	36
PID 1296 wrote to memory of 2028	1296	svchost.exe	38
PID 1296 wrote to memory of 2028	1296	svchost.exe	38
PID 1296 wrote to memory of 2028	1296	svchost.exe	38
PID 2028 wrote to memory of 2300	2028	cmd.exe	40
PID 2028 wrote to memory of 2300	2028	cmd.exe	40
PID 2028 wrote to memory of 2300	2028	cmd.exe	40
PID 2028 wrote to memory of 1616	2028	cmd.exe	41
PID 2028 wrote to memory of 1616	2028	cmd.exe	41
PID 2028 wrote to memory of 1616	2028	cmd.exe	41
PID 1296 wrote to memory of 1044	1296	svchost.exe	42
PID 1296 wrote to memory of 1044	1296	svchost.exe	42
PID 1296 wrote to memory of 1044	1296	svchost.exe	42
PID 1044 wrote to memory of 2376	1044	cmd.exe	44
PID 1044 wrote to memory of 2376	1044	cmd.exe	44
PID 1044 wrote to memory of 2376	1044	cmd.exe	44
PID 1296 wrote to memory of 1100	1296	svchost.exe	48
PID 1296 wrote to memory of 1100	1296	svchost.exe	48
PID 1296 wrote to memory of 1100	1296	svchost.exe	48

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\2024-04-22_e9b220e484d0526c883000011902314b_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-22_e9b220e484d0526c883000011902314b_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3048
- 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:1296
- - 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:652
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:584
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1864
- - 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:2028
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2300
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1616
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1044
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:2376
- - 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:1100

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1872

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2296

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:2284

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:844

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
46KB

MD5
e9b220e484d0526c883000011902314b

SHA1
0fd828b30b82decd203e580d54591a39b41c6795

SHA256
29fd8c24e498db51eaf961e3f2a5702f50b3b60892979d9eee14c5cde35fdfdb

SHA512
f65b510f24fa044361392c0b15bf985b94134969de65533fa3070e0dfb2a25fa789561babf9e477750030247b1e54d9fe98b4c19322c1d5f735458d52900d575

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

Filesize
475B

MD5
17ed41ce9a398617004e0240a9c2e602

SHA1
b2b10f2535d1db228c25c89317baa439f9584184

SHA256
ecee28979cf62e27980a26d8feca32cb961e8b61a516705c677d96166fd3b912

SHA512
ec1d61e42e32eed3a3069490fb4dd171165a5f35aa9015ec5f06f1dd1d85648dc969c81fb050cfc56d20f6a6e67a5be58b2d7cb20f2dba8f9af9a7f486077de0

Download Submit
memory/1296-8-0x000007FEF58A0000-0x000007FEF628C000-memory.dmp

Filesize
9.9MB

Download
memory/1296-7-0x0000000000FC0000-0x0000000000FD2000-memory.dmp

Filesize
72KB

Download
memory/1296-11-0x000000001AFD0000-0x000000001B050000-memory.dmp

Filesize
512KB

Download
memory/1296-439-0x000007FEF58A0000-0x000007FEF628C000-memory.dmp

Filesize
9.9MB

Download
memory/1296-440-0x000000001AFD0000-0x000000001B050000-memory.dmp

Filesize
512KB

Download
memory/3048-0-0x0000000000800000-0x0000000000812000-memory.dmp

Filesize
72KB

Download
memory/3048-1-0x000007FEF58A0000-0x000007FEF628C000-memory.dmp

Filesize
9.9MB

Download
memory/3048-9-0x000007FEF58A0000-0x000007FEF628C000-memory.dmp

Filesize
9.9MB

Download