chaos | c6d52bd7c0aaadc67bcf433212a04ec2c470a592fbd11fa58af4a5118cddbac8

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
18-09-2024 02:42

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General

Target

2024-09-18_4bedf848cbe4b5b7b1af3cd7c4d5db7c_wannacry.exe
Size

6.9MB
MD5

4bedf848cbe4b5b7b1af3cd7c4d5db7c
SHA1

868c500f51222967634dcb705e7ba42d6657abfa
SHA256

c6d52bd7c0aaadc67bcf433212a04ec2c470a592fbd11fa58af4a5118cddbac8
SHA512

e3b0d999be6207035797faf168bf6d4f92a3468cb4592fecb73c2570ad9bdaa1146a4126a4a10ca3ab3fd6346f9fbeb9f5def635748259ec21cd668720fd43ee
SSDEEP

49152:XC/xZL1qpiEHgA+R9ZafOKD+8PhBwYHd/bXx0P8oYK4dxQ27:

Score

10^/10

chaos defense_evasion execution impact ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\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 3 IoCs

resource	yara_rule
behavioral1/memory/2688-1-0x0000000000EF0000-0x00000000015D4000-memory.dmp	family_chaos
behavioral1/files/0x000700000001211b-5.dat	family_chaos
behavioral1/memory/2384-7-0x0000000000EB0000-0x0000000001594000-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

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
2240	wbadmin.exe

Drops startup file 3 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
2384	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\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Searches\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\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\Favorites\Links\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\Programs\Accessories\Accessibility\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\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\Music\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\Contacts\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\SendTo\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\Videos\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\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\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\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\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	F:\$RECYCLE.BIN\S-1-5-21-3434294380-2554721341-1919518612-1000\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-1-5-21-3434294380-2554721341-1919518612-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\7gkb0pq6q.jpg"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\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
2620	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
948	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2384	svchost.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2688	2024-09-18_4bedf848cbe4b5b7b1af3cd7c4d5db7c_wannacry.exe
2688	2024-09-18_4bedf848cbe4b5b7b1af3cd7c4d5db7c_wannacry.exe
2688	2024-09-18_4bedf848cbe4b5b7b1af3cd7c4d5db7c_wannacry.exe
2384	svchost.exe
2384	svchost.exe
2384	svchost.exe
2384	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2688	2024-09-18_4bedf848cbe4b5b7b1af3cd7c4d5db7c_wannacry.exe
Token: SeDebugPrivilege	2384	svchost.exe
Token: SeBackupPrivilege	2208	vssvc.exe
Token: SeRestorePrivilege	2208	vssvc.exe
Token: SeAuditPrivilege	2208	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1520	WMIC.exe
Token: SeSecurityPrivilege	1520	WMIC.exe
Token: SeTakeOwnershipPrivilege	1520	WMIC.exe
Token: SeLoadDriverPrivilege	1520	WMIC.exe
Token: SeSystemProfilePrivilege	1520	WMIC.exe
Token: SeSystemtimePrivilege	1520	WMIC.exe
Token: SeProfSingleProcessPrivilege	1520	WMIC.exe
Token: SeIncBasePriorityPrivilege	1520	WMIC.exe
Token: SeCreatePagefilePrivilege	1520	WMIC.exe
Token: SeBackupPrivilege	1520	WMIC.exe
Token: SeRestorePrivilege	1520	WMIC.exe
Token: SeShutdownPrivilege	1520	WMIC.exe
Token: SeDebugPrivilege	1520	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1520	WMIC.exe
Token: SeRemoteShutdownPrivilege	1520	WMIC.exe
Token: SeUndockPrivilege	1520	WMIC.exe
Token: SeManageVolumePrivilege	1520	WMIC.exe
Token: 33	1520	WMIC.exe
Token: 34	1520	WMIC.exe
Token: 35	1520	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1520	WMIC.exe
Token: SeSecurityPrivilege	1520	WMIC.exe
Token: SeTakeOwnershipPrivilege	1520	WMIC.exe
Token: SeLoadDriverPrivilege	1520	WMIC.exe
Token: SeSystemProfilePrivilege	1520	WMIC.exe
Token: SeSystemtimePrivilege	1520	WMIC.exe
Token: SeProfSingleProcessPrivilege	1520	WMIC.exe
Token: SeIncBasePriorityPrivilege	1520	WMIC.exe
Token: SeCreatePagefilePrivilege	1520	WMIC.exe
Token: SeBackupPrivilege	1520	WMIC.exe
Token: SeRestorePrivilege	1520	WMIC.exe
Token: SeShutdownPrivilege	1520	WMIC.exe
Token: SeDebugPrivilege	1520	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1520	WMIC.exe
Token: SeRemoteShutdownPrivilege	1520	WMIC.exe
Token: SeUndockPrivilege	1520	WMIC.exe
Token: SeManageVolumePrivilege	1520	WMIC.exe
Token: 33	1520	WMIC.exe
Token: 34	1520	WMIC.exe
Token: 35	1520	WMIC.exe
Token: SeBackupPrivilege	2228	wbengine.exe
Token: SeRestorePrivilege	2228	wbengine.exe
Token: SeSecurityPrivilege	2228	wbengine.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2688 wrote to memory of 2384	2688	2024-09-18_4bedf848cbe4b5b7b1af3cd7c4d5db7c_wannacry.exe	30
PID 2688 wrote to memory of 2384	2688	2024-09-18_4bedf848cbe4b5b7b1af3cd7c4d5db7c_wannacry.exe	30
PID 2688 wrote to memory of 2384	2688	2024-09-18_4bedf848cbe4b5b7b1af3cd7c4d5db7c_wannacry.exe	30
PID 2384 wrote to memory of 2660	2384	svchost.exe	32
PID 2384 wrote to memory of 2660	2384	svchost.exe	32
PID 2384 wrote to memory of 2660	2384	svchost.exe	32
PID 2660 wrote to memory of 2620	2660	cmd.exe	34
PID 2660 wrote to memory of 2620	2660	cmd.exe	34
PID 2660 wrote to memory of 2620	2660	cmd.exe	34
PID 2660 wrote to memory of 1520	2660	cmd.exe	38
PID 2660 wrote to memory of 1520	2660	cmd.exe	38
PID 2660 wrote to memory of 1520	2660	cmd.exe	38
PID 2384 wrote to memory of 2832	2384	svchost.exe	40
PID 2384 wrote to memory of 2832	2384	svchost.exe	40
PID 2384 wrote to memory of 2832	2384	svchost.exe	40
PID 2832 wrote to memory of 2240	2832	cmd.exe	42
PID 2832 wrote to memory of 2240	2832	cmd.exe	42
PID 2832 wrote to memory of 2240	2832	cmd.exe	42
PID 2384 wrote to memory of 948	2384	svchost.exe	46
PID 2384 wrote to memory of 948	2384	svchost.exe	46
PID 2384 wrote to memory of 948	2384	svchost.exe	46

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\2024-09-18_4bedf848cbe4b5b7b1af3cd7c4d5db7c_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-18_4bedf848cbe4b5b7b1af3cd7c4d5db7c_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2688
- 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:2384
- - 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:2660
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2620
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1520
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2832
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:2240
- - 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:948

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2208

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2228

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:1828

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:448

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

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Downloads

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

Filesize
6.9MB

MD5
4bedf848cbe4b5b7b1af3cd7c4d5db7c

SHA1
868c500f51222967634dcb705e7ba42d6657abfa

SHA256
c6d52bd7c0aaadc67bcf433212a04ec2c470a592fbd11fa58af4a5118cddbac8

SHA512
e3b0d999be6207035797faf168bf6d4f92a3468cb4592fecb73c2570ad9bdaa1146a4126a4a10ca3ab3fd6346f9fbeb9f5def635748259ec21cd668720fd43ee

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

Filesize
964B

MD5
4217b8b83ce3c3f70029a056546f8fd0

SHA1
487cdb5733d073a0427418888e8f7070fe782a03

SHA256
7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121

SHA512
2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740

Download Submit
memory/2384-7-0x0000000000EB0000-0x0000000001594000-memory.dmp

Filesize
6.9MB

Download
memory/2384-8-0x000007FEF6030000-0x000007FEF6A1C000-memory.dmp

Filesize
9.9MB

Download
memory/2384-76-0x000007FEF6030000-0x000007FEF6A1C000-memory.dmp

Filesize
9.9MB

Download
memory/2384-77-0x000007FEF6030000-0x000007FEF6A1C000-memory.dmp

Filesize
9.9MB

Download
memory/2688-0-0x000007FEF6033000-0x000007FEF6034000-memory.dmp

Filesize
4KB

Download
memory/2688-1-0x0000000000EF0000-0x00000000015D4000-memory.dmp

Filesize
6.9MB

Download