chaos | f6dfe2824f24d1daad9d072df9e74f667510f1c22f98b887357010d0fded3a6c

Analysis

max time kernel
121s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02/02/2025, 04:22

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General

Target

2025-02-02_3a6dcb521541f45851833615856452e1_wannacry.exe
Size

195KB
MD5

3a6dcb521541f45851833615856452e1
SHA1

43e7ae516237531c22cd69b7ca37a0ff39e9488e
SHA256

f6dfe2824f24d1daad9d072df9e74f667510f1c22f98b887357010d0fded3a6c
SHA512

e6a43be34cb421843b9ac31b2b5f21d2d2f96e16810de93dd0fa189a7bb4333bae5ffb94e5929b2a409b51147a4c2d9511814fd2af8186c88ce5a77eff700430
SSDEEP

3072:woRNeWr98RskBc93hxfkB+7kjCGX8q1qz2/HuHZZ57/Euv8RnNaO:rnr98RI8sAwxWHaEi

Score

10^/10

chaos defense_evasion evasion execution impact ransomware spyware stealer

Malware Config

Extracted

Path

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

Ransom Note

HA HA HA, Revenge of Heisenberg!!! 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 $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: bc1qlnzcep4l4ac0ttdrq7awxev9ehu465f2vpt9aa

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/1880-1-0x00000000013C0000-0x00000000013F8000-memory.dmp	family_chaos
behavioral1/files/0x0004000000004ed7-6.dat	family_chaos
behavioral1/memory/2992-8-0x00000000013D0000-0x0000000001408000-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
624	bcdedit.exe
3028	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
2296	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
2992	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\Admin\Documents\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\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\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\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\Public\Pictures\Sample Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links\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\User Pinned\TaskBar\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-1-5-21-312935884-697965778-3955649944-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\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\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\Programs\Accessories\Accessibility\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\Admin\AppData\Roaming\Microsoft\Windows\Libraries\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\Public\Videos\Sample Videos\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\Start Menu\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\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

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\9l8adfz4l.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
2192	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1604	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2992	svchost.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
1880	2025-02-02_3a6dcb521541f45851833615856452e1_wannacry.exe
1880	2025-02-02_3a6dcb521541f45851833615856452e1_wannacry.exe
1880	2025-02-02_3a6dcb521541f45851833615856452e1_wannacry.exe
2992	svchost.exe
2992	svchost.exe
2992	svchost.exe
2992	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	1880	2025-02-02_3a6dcb521541f45851833615856452e1_wannacry.exe
Token: SeDebugPrivilege	2992	svchost.exe
Token: SeBackupPrivilege	2076	vssvc.exe
Token: SeRestorePrivilege	2076	vssvc.exe
Token: SeAuditPrivilege	2076	vssvc.exe
Token: SeIncreaseQuotaPrivilege	740	WMIC.exe
Token: SeSecurityPrivilege	740	WMIC.exe
Token: SeTakeOwnershipPrivilege	740	WMIC.exe
Token: SeLoadDriverPrivilege	740	WMIC.exe
Token: SeSystemProfilePrivilege	740	WMIC.exe
Token: SeSystemtimePrivilege	740	WMIC.exe
Token: SeProfSingleProcessPrivilege	740	WMIC.exe
Token: SeIncBasePriorityPrivilege	740	WMIC.exe
Token: SeCreatePagefilePrivilege	740	WMIC.exe
Token: SeBackupPrivilege	740	WMIC.exe
Token: SeRestorePrivilege	740	WMIC.exe
Token: SeShutdownPrivilege	740	WMIC.exe
Token: SeDebugPrivilege	740	WMIC.exe
Token: SeSystemEnvironmentPrivilege	740	WMIC.exe
Token: SeRemoteShutdownPrivilege	740	WMIC.exe
Token: SeUndockPrivilege	740	WMIC.exe
Token: SeManageVolumePrivilege	740	WMIC.exe
Token: 33	740	WMIC.exe
Token: 34	740	WMIC.exe
Token: 35	740	WMIC.exe
Token: SeIncreaseQuotaPrivilege	740	WMIC.exe
Token: SeSecurityPrivilege	740	WMIC.exe
Token: SeTakeOwnershipPrivilege	740	WMIC.exe
Token: SeLoadDriverPrivilege	740	WMIC.exe
Token: SeSystemProfilePrivilege	740	WMIC.exe
Token: SeSystemtimePrivilege	740	WMIC.exe
Token: SeProfSingleProcessPrivilege	740	WMIC.exe
Token: SeIncBasePriorityPrivilege	740	WMIC.exe
Token: SeCreatePagefilePrivilege	740	WMIC.exe
Token: SeBackupPrivilege	740	WMIC.exe
Token: SeRestorePrivilege	740	WMIC.exe
Token: SeShutdownPrivilege	740	WMIC.exe
Token: SeDebugPrivilege	740	WMIC.exe
Token: SeSystemEnvironmentPrivilege	740	WMIC.exe
Token: SeRemoteShutdownPrivilege	740	WMIC.exe
Token: SeUndockPrivilege	740	WMIC.exe
Token: SeManageVolumePrivilege	740	WMIC.exe
Token: 33	740	WMIC.exe
Token: 34	740	WMIC.exe
Token: 35	740	WMIC.exe
Token: SeBackupPrivilege	2376	wbengine.exe
Token: SeRestorePrivilege	2376	wbengine.exe
Token: SeSecurityPrivilege	2376	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1880 wrote to memory of 2992	1880	2025-02-02_3a6dcb521541f45851833615856452e1_wannacry.exe	31
PID 1880 wrote to memory of 2992	1880	2025-02-02_3a6dcb521541f45851833615856452e1_wannacry.exe	31
PID 1880 wrote to memory of 2992	1880	2025-02-02_3a6dcb521541f45851833615856452e1_wannacry.exe	31
PID 2992 wrote to memory of 2288	2992	svchost.exe	33
PID 2992 wrote to memory of 2288	2992	svchost.exe	33
PID 2992 wrote to memory of 2288	2992	svchost.exe	33
PID 2288 wrote to memory of 2192	2288	cmd.exe	35
PID 2288 wrote to memory of 2192	2288	cmd.exe	35
PID 2288 wrote to memory of 2192	2288	cmd.exe	35
PID 2288 wrote to memory of 740	2288	cmd.exe	38
PID 2288 wrote to memory of 740	2288	cmd.exe	38
PID 2288 wrote to memory of 740	2288	cmd.exe	38
PID 2992 wrote to memory of 1384	2992	svchost.exe	40
PID 2992 wrote to memory of 1384	2992	svchost.exe	40
PID 2992 wrote to memory of 1384	2992	svchost.exe	40
PID 1384 wrote to memory of 624	1384	cmd.exe	42
PID 1384 wrote to memory of 624	1384	cmd.exe	42
PID 1384 wrote to memory of 624	1384	cmd.exe	42
PID 1384 wrote to memory of 3028	1384	cmd.exe	43
PID 1384 wrote to memory of 3028	1384	cmd.exe	43
PID 1384 wrote to memory of 3028	1384	cmd.exe	43
PID 2992 wrote to memory of 1304	2992	svchost.exe	44
PID 2992 wrote to memory of 1304	2992	svchost.exe	44
PID 2992 wrote to memory of 1304	2992	svchost.exe	44
PID 1304 wrote to memory of 2296	1304	cmd.exe	46
PID 1304 wrote to memory of 2296	1304	cmd.exe	46
PID 1304 wrote to memory of 2296	1304	cmd.exe	46
PID 2992 wrote to memory of 1604	2992	svchost.exe	50
PID 2992 wrote to memory of 1604	2992	svchost.exe	50
PID 2992 wrote to memory of 1604	2992	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\2025-02-02_3a6dcb521541f45851833615856452e1_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-02_3a6dcb521541f45851833615856452e1_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1880
- 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:2992
- - 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:2288
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2192
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:740
- - 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:1384
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:624
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:3028
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1304
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:2296
- - 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:1604

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2076

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2376

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:756

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:1264

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
195KB

MD5
3a6dcb521541f45851833615856452e1

SHA1
43e7ae516237531c22cd69b7ca37a0ff39e9488e

SHA256
f6dfe2824f24d1daad9d072df9e74f667510f1c22f98b887357010d0fded3a6c

SHA512
e6a43be34cb421843b9ac31b2b5f21d2d2f96e16810de93dd0fa189a7bb4333bae5ffb94e5929b2a409b51147a4c2d9511814fd2af8186c88ce5a77eff700430

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

Filesize
913B

MD5
ed0389d2c63d4de9b414924025c4b669

SHA1
2572880a7ce991d4a360f5f9f3c91c8efcd6af61

SHA256
58d7086d971c5d952696e412f07e0a5131af143f2e996b6cb9adf4ef1aeb80ae

SHA512
0b6392ed883ce5d3d995ccd48430d4c494ac847a86c4f20f7e2e47c9708170690cdc0d5d569f5c7c8d90baf6ea1f0295a83eeb802e5f03442d716f41c9965a95

Download Submit
memory/1880-0-0x000007FEF55E3000-0x000007FEF55E4000-memory.dmp

Filesize
4KB

Download
memory/1880-1-0x00000000013C0000-0x00000000013F8000-memory.dmp

Filesize
224KB

Download
memory/1880-2-0x000007FEF55E3000-0x000007FEF55E4000-memory.dmp

Filesize
4KB

Download
memory/2992-8-0x00000000013D0000-0x0000000001408000-memory.dmp

Filesize
224KB

Download
memory/2992-9-0x000007FEF55E0000-0x000007FEF5FCC000-memory.dmp

Filesize
9.9MB

Download
memory/2992-11-0x000007FEF55E0000-0x000007FEF5FCC000-memory.dmp

Filesize
9.9MB

Download
memory/2992-527-0x000007FEF55E0000-0x000007FEF5FCC000-memory.dmp

Filesize
9.9MB

Download