chaos | 1130f367f8ae3ce57756116751f902489ab746751f0a4fd3b6cc737f9c2afa7a

Analysis

max time kernel
119s
max time network
121s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
04-06-2024 11:26

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General

Target

2024-06-04_0fc06a200b5caee925f0daf120725106_wannacry.exe
Size

565KB
MD5

0fc06a200b5caee925f0daf120725106
SHA1

9f186aa6bbbf50c0a430d9bd1b3276164fbbce42
SHA256

1130f367f8ae3ce57756116751f902489ab746751f0a4fd3b6cc737f9c2afa7a
SHA512

695deb0c5e5b27e84dc3a62b57e159b84b79be960c1116f45bb40ac7f13170ea38cddf4837a4fdd2c8eff12633cc895b4c839c749470284939ff48bde845c49b
SSDEEP

12288:xO4cmFlknCorfeHFK+i0aN+Ef7vk757l4PD8wtIRKg2zs+1YZeYZr8axeAC3pM:xnIean/tEoP3S

Score

10^/10

chaos defense_evasion evasion execution impact ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\Documents\# XRET #.txt

Ransom Note

%%% Xret Ransomware %%% >>> What happened? We encrypted and stolen all of your files. We use AES and ECC algorithms. Nobody can recover your files without our decryption service. >>> How to recover? We are not a politically motivated group and we want nothing more than money. If you pay, we will provide you with decryption software and destroy the stolen data. >>> What guarantees? You can send us an unimportant file less than 1 MG, We decrypt it as guarantee. If we do not send you the decryption software or delete stolen data, no one will pay us in future so we will keep our promise. >>> How to contact us? Our email address: [email protected] In case of no answer within 24 hours, contact to this Whatsapp: +56-997165537 Write &*&@! in the subject of the email. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>> XRET <<<<< >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>> Warnings! - Do not go to recovery companies, they are just middlemen who will make money off you and cheat you. They secretly negotiate with us, buy decryption software and will sell it to you many times more expensive or they will simply scam you. - Do not hesitate for a long time. The faster you pay, the lower the price. - Do not delete or modify encrypted files, it will lead to problems with decryption of files.

Emails

[email protected]

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/2964-1-0x0000000000CA0000-0x0000000000D34000-memory.dmp	family_chaos
behavioral1/files/0x000c00000001444f-5.dat	family_chaos
behavioral1/memory/2052-7-0x0000000000FC0000-0x0000000001054000-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

Detects command variations typically used by ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/2964-1-0x0000000000CA0000-0x0000000000D34000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/files/0x000c00000001444f-5.dat	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/memory/2052-7-0x0000000000FC0000-0x0000000001054000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
336	bcdedit.exe
1072	bcdedit.exe

Renames multiple (203) 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
1692	wbadmin.exe

Drops startup file 3 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XT.url	XT.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini	XT.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\# XRET #.txt	XT.exe

Executes dropped EXE 1 IoCs

pid	Process
2052	XT.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\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini	XT.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	XT.exe
File opened for modification	C:\Users\Public\Music\Sample Music\desktop.ini	XT.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini	XT.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	XT.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini	XT.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini	XT.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	XT.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-2297530677-1229052932-2803917579-1000\desktop.ini	XT.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	XT.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	XT.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	XT.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini	XT.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	XT.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	XT.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	XT.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	XT.exe
File opened for modification	C:\Users\Admin\Favorites\Links for United States\desktop.ini	XT.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	XT.exe
File opened for modification	C:\Users\Admin\Saved Games\desktop.ini	XT.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini	XT.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini	XT.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	XT.exe
File opened for modification	C:\Users\Public\Videos\Sample Videos\desktop.ini	XT.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	XT.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	XT.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	XT.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	XT.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	XT.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	XT.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini	XT.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini	XT.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini	XT.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	XT.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-1-5-21-2297530677-1229052932-2803917579-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\qqceu1dd5.jpg"	XT.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
1708	vssadmin.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2052	XT.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2964	2024-06-04_0fc06a200b5caee925f0daf120725106_wannacry.exe
2964	2024-06-04_0fc06a200b5caee925f0daf120725106_wannacry.exe
2052	XT.exe
2052	XT.exe
2052	XT.exe
2052	XT.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2964	2024-06-04_0fc06a200b5caee925f0daf120725106_wannacry.exe
Token: SeDebugPrivilege	2052	XT.exe
Token: SeBackupPrivilege	1696	vssvc.exe
Token: SeRestorePrivilege	1696	vssvc.exe
Token: SeAuditPrivilege	1696	vssvc.exe
Token: SeIncreaseQuotaPrivilege	2228	WMIC.exe
Token: SeSecurityPrivilege	2228	WMIC.exe
Token: SeTakeOwnershipPrivilege	2228	WMIC.exe
Token: SeLoadDriverPrivilege	2228	WMIC.exe
Token: SeSystemProfilePrivilege	2228	WMIC.exe
Token: SeSystemtimePrivilege	2228	WMIC.exe
Token: SeProfSingleProcessPrivilege	2228	WMIC.exe
Token: SeIncBasePriorityPrivilege	2228	WMIC.exe
Token: SeCreatePagefilePrivilege	2228	WMIC.exe
Token: SeBackupPrivilege	2228	WMIC.exe
Token: SeRestorePrivilege	2228	WMIC.exe
Token: SeShutdownPrivilege	2228	WMIC.exe
Token: SeDebugPrivilege	2228	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2228	WMIC.exe
Token: SeRemoteShutdownPrivilege	2228	WMIC.exe
Token: SeUndockPrivilege	2228	WMIC.exe
Token: SeManageVolumePrivilege	2228	WMIC.exe
Token: 33	2228	WMIC.exe
Token: 34	2228	WMIC.exe
Token: 35	2228	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2228	WMIC.exe
Token: SeSecurityPrivilege	2228	WMIC.exe
Token: SeTakeOwnershipPrivilege	2228	WMIC.exe
Token: SeLoadDriverPrivilege	2228	WMIC.exe
Token: SeSystemProfilePrivilege	2228	WMIC.exe
Token: SeSystemtimePrivilege	2228	WMIC.exe
Token: SeProfSingleProcessPrivilege	2228	WMIC.exe
Token: SeIncBasePriorityPrivilege	2228	WMIC.exe
Token: SeCreatePagefilePrivilege	2228	WMIC.exe
Token: SeBackupPrivilege	2228	WMIC.exe
Token: SeRestorePrivilege	2228	WMIC.exe
Token: SeShutdownPrivilege	2228	WMIC.exe
Token: SeDebugPrivilege	2228	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2228	WMIC.exe
Token: SeRemoteShutdownPrivilege	2228	WMIC.exe
Token: SeUndockPrivilege	2228	WMIC.exe
Token: SeManageVolumePrivilege	2228	WMIC.exe
Token: 33	2228	WMIC.exe
Token: 34	2228	WMIC.exe
Token: 35	2228	WMIC.exe
Token: SeBackupPrivilege	1176	wbengine.exe
Token: SeRestorePrivilege	1176	wbengine.exe
Token: SeSecurityPrivilege	1176	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2964 wrote to memory of 2052	2964	2024-06-04_0fc06a200b5caee925f0daf120725106_wannacry.exe	28
PID 2964 wrote to memory of 2052	2964	2024-06-04_0fc06a200b5caee925f0daf120725106_wannacry.exe	28
PID 2964 wrote to memory of 2052	2964	2024-06-04_0fc06a200b5caee925f0daf120725106_wannacry.exe	28
PID 2052 wrote to memory of 1620	2052	XT.exe	30
PID 2052 wrote to memory of 1620	2052	XT.exe	30
PID 2052 wrote to memory of 1620	2052	XT.exe	30
PID 1620 wrote to memory of 1708	1620	cmd.exe	32
PID 1620 wrote to memory of 1708	1620	cmd.exe	32
PID 1620 wrote to memory of 1708	1620	cmd.exe	32
PID 1620 wrote to memory of 2228	1620	cmd.exe	35
PID 1620 wrote to memory of 2228	1620	cmd.exe	35
PID 1620 wrote to memory of 2228	1620	cmd.exe	35
PID 2052 wrote to memory of 2396	2052	XT.exe	37
PID 2052 wrote to memory of 2396	2052	XT.exe	37
PID 2052 wrote to memory of 2396	2052	XT.exe	37
PID 2396 wrote to memory of 336	2396	cmd.exe	39
PID 2396 wrote to memory of 336	2396	cmd.exe	39
PID 2396 wrote to memory of 336	2396	cmd.exe	39
PID 2396 wrote to memory of 1072	2396	cmd.exe	40
PID 2396 wrote to memory of 1072	2396	cmd.exe	40
PID 2396 wrote to memory of 1072	2396	cmd.exe	40
PID 2052 wrote to memory of 588	2052	XT.exe	41
PID 2052 wrote to memory of 588	2052	XT.exe	41
PID 2052 wrote to memory of 588	2052	XT.exe	41
PID 588 wrote to memory of 1692	588	cmd.exe	43
PID 588 wrote to memory of 1692	588	cmd.exe	43
PID 588 wrote to memory of 1692	588	cmd.exe	43
PID 2052 wrote to memory of 1472	2052	XT.exe	47
PID 2052 wrote to memory of 1472	2052	XT.exe	47
PID 2052 wrote to memory of 1472	2052	XT.exe	47

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\2024-06-04_0fc06a200b5caee925f0daf120725106_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-04_0fc06a200b5caee925f0daf120725106_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2964
- C:\Users\Admin\AppData\Roaming\XT.exe
  "C:\Users\Admin\AppData\Roaming\XT.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:2052
- - 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:1620
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:1708
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2228
- - 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:2396
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:336
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1072
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:588
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:1692
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\# XRET #.txt
    3⤵
    PID:1472

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1696

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1176

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:360

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:2104

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

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\XT.exe

Filesize
565KB

MD5
0fc06a200b5caee925f0daf120725106

SHA1
9f186aa6bbbf50c0a430d9bd1b3276164fbbce42

SHA256
1130f367f8ae3ce57756116751f902489ab746751f0a4fd3b6cc737f9c2afa7a

SHA512
695deb0c5e5b27e84dc3a62b57e159b84b79be960c1116f45bb40ac7f13170ea38cddf4837a4fdd2c8eff12633cc895b4c839c749470284939ff48bde845c49b

Download Submit
C:\Users\Admin\Documents\# XRET #.txt

Filesize
1KB

MD5
1a3d8cf29404870290401a7e5e9be84d

SHA1
678c8c8a6bb38fc44870b91f6e787ce59efdc288

SHA256
5ea4a9b5158f234a511d8fa155e68a2f5333f91f89f54893334750840952b3a3

SHA512
2e34c2e81b7adaeac78edef60566d28a661590a4552cc5e357718c31737dcfeb5a72a4733acf9427bcdbe990ab6f2712283ac5b34d005d83b8305f1b98da7c82

Download Submit
memory/2052-7-0x0000000000FC0000-0x0000000001054000-memory.dmp

Filesize
592KB

Download
memory/2052-9-0x000007FEF5F10000-0x000007FEF68FC000-memory.dmp

Filesize
9.9MB

Download
memory/2052-20-0x000007FEF5F10000-0x000007FEF68FC000-memory.dmp

Filesize
9.9MB

Download
memory/2052-470-0x000007FEF5F10000-0x000007FEF68FC000-memory.dmp

Filesize
9.9MB

Download
memory/2964-0-0x000007FEF5F13000-0x000007FEF5F14000-memory.dmp

Filesize
4KB

Download
memory/2964-1-0x0000000000CA0000-0x0000000000D34000-memory.dmp

Filesize
592KB

Download