chaos | b08d4f13f88946dbc97537569f4516ddf832c36d4636501abbad24f505904222

Resubmissions

31/03/2024, 14:31

240331-rvsqssde3x 10

20/03/2024, 06:31

240320-g98qfsbc71 10

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
20/03/2024, 06:31

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General

Target

2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe
Size

294KB
MD5

f637065576c46fdf526f6156a06a8102
SHA1

208f7d972d29f58c6c18a58242d7764d6969c838
SHA256

b08d4f13f88946dbc97537569f4516ddf832c36d4636501abbad24f505904222
SHA512

9a194f4661dd716770c45bcb90052b1cc8aa90b3593bae4ddad75193a04c397a7f8ca7d03559dbba9167b90fdf31a9ce6a8d6697773809ca444e36a546eb078a
SSDEEP

6144:Rr9W1lNCM2n08o/2mWwEzg+0c+BMCfAXtMcOpXaLbik+:olNJ2n08o/2XwE0+fuMCfAdMcOpXubib

Score

10^/10

chaos evasion ransomware spyware stealer

Malware Config

Extracted

Path

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

Ransom Note

Hello :) 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 $300. Payment can be made in Monero only. How do I pay, where do I get Monero? Purchasing Monero 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: Coinbase - https://www.coinbase.com/how-to-buy/monero Payment informationAmount: $300 in XMR Monero Address: 43fpjf8X9jDZjmA3wwdd695ZwZCmFyTtWaPGkfwWv66UhVX2b24wXy7QCEJYVVFP98Wb6oRcdUgXjE1tk1s669LmQ6RzXGq (IF YOU TRY TO DELETE THIS RANSOMWARE OR USE AND THIRD PART TOOLS TO TRY AND FIX IT, ALL OF YOUR FILES WILL BE GONE FOREVER!) (YOU HAVE 24 HOURS TO SEND THE FUNDS! OR ELSE ALL OF YOUR PERSONAL FILES/DATA ON THIS COMPUTER WILL BE DELETED FROM YOUR SYSTEM AND SOLD ON THE DARK WEB)

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/1976-0-0x00000000002D0000-0x0000000000320000-memory.dmp	family_chaos
behavioral1/files/0x000b000000012254-5.dat	family_chaos
behavioral1/memory/2008-7-0x0000000000090000-0x00000000000E0000-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/1976-0-0x00000000002D0000-0x0000000000320000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/files/0x000b000000012254-5.dat	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/memory/2008-7-0x0000000000090000-0x00000000000E0000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
2092	bcdedit.exe
888	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
2960	wbadmin.exe

Drops startup file 3 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
2008	runner.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\SendTo\Desktop.ini	runner.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini	runner.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	runner.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	runner.exe
File opened for modification	C:\Users\Admin\Saved Games\desktop.ini	runner.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	runner.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	runner.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	runner.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-1298544033-3225604241-2703760938-1000\desktop.ini	runner.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	runner.exe
File opened for modification	C:\Users\Admin\Favorites\Links for United States\desktop.ini	runner.exe
File opened for modification	C:\Users\Public\Music\Sample Music\desktop.ini	runner.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	runner.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini	runner.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini	runner.exe
File opened for modification	C:\Users\Public\Videos\Sample Videos\desktop.ini	runner.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	runner.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	runner.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	runner.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini	runner.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini	runner.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini	runner.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	runner.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	runner.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	runner.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini	runner.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	runner.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	runner.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	runner.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	runner.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	runner.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini	runner.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini	runner.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	runner.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-1-5-21-1298544033-3225604241-2703760938-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1y9tff4vv.jpg"	runner.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
3004	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2332	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2008	runner.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1976	2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe
1976	2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe
2008	runner.exe
2008	runner.exe
2008	runner.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	1976	2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe
Token: SeDebugPrivilege	2008	runner.exe
Token: SeBackupPrivilege	2664	vssvc.exe
Token: SeRestorePrivilege	2664	vssvc.exe
Token: SeAuditPrivilege	2664	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1700	WMIC.exe
Token: SeSecurityPrivilege	1700	WMIC.exe
Token: SeTakeOwnershipPrivilege	1700	WMIC.exe
Token: SeLoadDriverPrivilege	1700	WMIC.exe
Token: SeSystemProfilePrivilege	1700	WMIC.exe
Token: SeSystemtimePrivilege	1700	WMIC.exe
Token: SeProfSingleProcessPrivilege	1700	WMIC.exe
Token: SeIncBasePriorityPrivilege	1700	WMIC.exe
Token: SeCreatePagefilePrivilege	1700	WMIC.exe
Token: SeBackupPrivilege	1700	WMIC.exe
Token: SeRestorePrivilege	1700	WMIC.exe
Token: SeShutdownPrivilege	1700	WMIC.exe
Token: SeDebugPrivilege	1700	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1700	WMIC.exe
Token: SeRemoteShutdownPrivilege	1700	WMIC.exe
Token: SeUndockPrivilege	1700	WMIC.exe
Token: SeManageVolumePrivilege	1700	WMIC.exe
Token: 33	1700	WMIC.exe
Token: 34	1700	WMIC.exe
Token: 35	1700	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1700	WMIC.exe
Token: SeSecurityPrivilege	1700	WMIC.exe
Token: SeTakeOwnershipPrivilege	1700	WMIC.exe
Token: SeLoadDriverPrivilege	1700	WMIC.exe
Token: SeSystemProfilePrivilege	1700	WMIC.exe
Token: SeSystemtimePrivilege	1700	WMIC.exe
Token: SeProfSingleProcessPrivilege	1700	WMIC.exe
Token: SeIncBasePriorityPrivilege	1700	WMIC.exe
Token: SeCreatePagefilePrivilege	1700	WMIC.exe
Token: SeBackupPrivilege	1700	WMIC.exe
Token: SeRestorePrivilege	1700	WMIC.exe
Token: SeShutdownPrivilege	1700	WMIC.exe
Token: SeDebugPrivilege	1700	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1700	WMIC.exe
Token: SeRemoteShutdownPrivilege	1700	WMIC.exe
Token: SeUndockPrivilege	1700	WMIC.exe
Token: SeManageVolumePrivilege	1700	WMIC.exe
Token: 33	1700	WMIC.exe
Token: 34	1700	WMIC.exe
Token: 35	1700	WMIC.exe
Token: SeBackupPrivilege	1056	wbengine.exe
Token: SeRestorePrivilege	1056	wbengine.exe
Token: SeSecurityPrivilege	1056	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1976 wrote to memory of 2008	1976	2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe	28
PID 1976 wrote to memory of 2008	1976	2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe	28
PID 1976 wrote to memory of 2008	1976	2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe	28
PID 2008 wrote to memory of 2912	2008	runner.exe	30
PID 2008 wrote to memory of 2912	2008	runner.exe	30
PID 2008 wrote to memory of 2912	2008	runner.exe	30
PID 2912 wrote to memory of 3004	2912	cmd.exe	32
PID 2912 wrote to memory of 3004	2912	cmd.exe	32
PID 2912 wrote to memory of 3004	2912	cmd.exe	32
PID 2912 wrote to memory of 1700	2912	cmd.exe	35
PID 2912 wrote to memory of 1700	2912	cmd.exe	35
PID 2912 wrote to memory of 1700	2912	cmd.exe	35
PID 2008 wrote to memory of 2428	2008	runner.exe	37
PID 2008 wrote to memory of 2428	2008	runner.exe	37
PID 2008 wrote to memory of 2428	2008	runner.exe	37
PID 2428 wrote to memory of 2092	2428	cmd.exe	39
PID 2428 wrote to memory of 2092	2428	cmd.exe	39
PID 2428 wrote to memory of 2092	2428	cmd.exe	39
PID 2428 wrote to memory of 888	2428	cmd.exe	40
PID 2428 wrote to memory of 888	2428	cmd.exe	40
PID 2428 wrote to memory of 888	2428	cmd.exe	40
PID 2008 wrote to memory of 2304	2008	runner.exe	41
PID 2008 wrote to memory of 2304	2008	runner.exe	41
PID 2008 wrote to memory of 2304	2008	runner.exe	41
PID 2304 wrote to memory of 2960	2304	cmd.exe	43
PID 2304 wrote to memory of 2960	2304	cmd.exe	43
PID 2304 wrote to memory of 2960	2304	cmd.exe	43
PID 2008 wrote to memory of 2332	2008	runner.exe	47
PID 2008 wrote to memory of 2332	2008	runner.exe	47
PID 2008 wrote to memory of 2332	2008	runner.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\2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1976
- C:\Users\Admin\AppData\Roaming\runner.exe
  "C:\Users\Admin\AppData\Roaming\runner.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:2008
- - 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:2912
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:3004
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1700
- - 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:2428
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2092
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:888
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2304
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:2960
- - 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:2332

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2664

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1056

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:1168

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:840

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\runner.exe

Filesize
294KB

MD5
f637065576c46fdf526f6156a06a8102

SHA1
208f7d972d29f58c6c18a58242d7764d6969c838

SHA256
b08d4f13f88946dbc97537569f4516ddf832c36d4636501abbad24f505904222

SHA512
9a194f4661dd716770c45bcb90052b1cc8aa90b3593bae4ddad75193a04c397a7f8ca7d03559dbba9167b90fdf31a9ce6a8d6697773809ca444e36a546eb078a

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

Filesize
1KB

MD5
7e52dc42a2ec24d41406e3990ef75582

SHA1
3f3bf46735446cba9d6b76ee71704cdf1330dfa8

SHA256
cc70ff5d6016c38e22f490120c49be9ac1509e1b0288e51d21746b8f570d690a

SHA512
5e9fecb01d2ea2dc421324b718cb824c21e41360a6292ac24b3a535ec2654745fdf6f8a943cacd417a897e8e50d1ad6dd088fbbae1f4158ec2bc027d537cb70b

Download Submit
memory/1976-0-0x00000000002D0000-0x0000000000320000-memory.dmp

Filesize
320KB

Download
memory/1976-1-0x000007FEF5C30000-0x000007FEF661C000-memory.dmp

Filesize
9.9MB

Download
memory/1976-8-0x000007FEF5C30000-0x000007FEF661C000-memory.dmp

Filesize
9.9MB

Download
memory/2008-9-0x000007FEF5C30000-0x000007FEF661C000-memory.dmp

Filesize
9.9MB

Download
memory/2008-7-0x0000000000090000-0x00000000000E0000-memory.dmp

Filesize
320KB

Download
memory/2008-11-0x000000001AE30000-0x000000001AEB0000-memory.dmp

Filesize
512KB

Download
memory/2008-483-0x000007FEF5C30000-0x000007FEF661C000-memory.dmp

Filesize
9.9MB

Download