chaos | b1f040dfbc18222c390a807de1bea52974808ef37dea145fe34e3a75dff99b7f

Resubmissions

23-03-2024 17:10

240323-vp3klahg49 10

Analysis

max time kernel
232s
max time network
239s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
23-03-2024 17:10

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General

Target

Xclinet.exe
Size

140KB
MD5

066f7723bbfa71ece05354f0ccb426dc
SHA1

45f9e00fd1cf2be0e5825e951c582e7c117f451c
SHA256

b1f040dfbc18222c390a807de1bea52974808ef37dea145fe34e3a75dff99b7f
SHA512

eb92d1c550a073a28cbc961be4d280893bc50ed7243e5adb5ca08fe7c2748b9719cc39f21bd96de7f13ecf7a28520f631b0226a8d953412a7b4be589329fefd1
SSDEEP

1536:kh4ylNPpv6jlSsI0h4npvb9iSL6n0mTOXfpAf+YXLK5RJX1:kh4yQJendb9jLmOef+YXQ7

Score

10^/10

chaos xworm persistence ransomware rat spyware stealer trojan

Malware Config

Extracted

Family

xworm

throughout-taxation.gl.at.ply.gg:48020

Attributes

Install_directory
%AppData%
install_file
xworm connected?.exe

Extracted

Path

C:\Users\Admin\Desktop\READ ME FOR AN EXPLAINETION.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. 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 $50. Payment can be made in Bitcoin (Bitcoin Address: bc1qakhl8eu20ely220fxm6d3tjsk2al64vrha4sxa), Ethereum (ETH Address: 0x22D2C1C38b3c26C9E403B34ea5aF42Af00e90d9f), Binance Coin (BNB Address: bnb17CqMQFeuB3NTzJ2X28tfRmWaPyPQgvoHV0205gfc6ykk), or through PayPal (Burner Account: [email protected]). You can make the payment directly by visiting this PayPal site: PayPal Payment Site. How do I pay, where do I get Bitcoin, Ethereum, Binance Coin, or PayPal? Purchasing Bitcoin, Ethereum, or Binance Coin varies from country to country, you are best advised to do a quick Google search yourself to find out how to buy Bitcoin, Ethereum, Binance Coin, or set up a PayPal account. These sites will help you to get fast and reliable Bitcoin, Ethereum, Binance Coin, or PayPal. Coinmama - https://www.coinmama.com Bitpanda - https://www.bitpanda.com If you will try to seek for help or advice we recommend not to. Why you ask? Because no other software can decrypt this ransomware, only us have the special key to unlock it. So getting other decrypters will be worthless. Don't even think about calling the cops; we will snitch about your pedo activity! You have exactly 12 hours from now to pay up or your PC will be locked for a very long time, approximately 125 Years! Have fun buddy. We monitor every move you make, 👁️‍🗨️ with 8 eyes on you, always one step ahead 👁️, lurking in your devices.

Emails

[email protected]

URLs

https://www.coinmama.com

https://www.bitpanda.com

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 2 IoCs

resource	yara_rule
behavioral1/files/0x000400000001e76b-11.dat	family_chaos
behavioral1/memory/1992-18-0x0000000000210000-0x000000000022C000-memory.dmp	family_chaos

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/4968-0-0x00000000001A0000-0x00000000001C8000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

Checks computer location settings 2 TTPs 3 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	swewni.exe
Key value queried	\REGISTRY\USER\S-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	svchost.exe
Key value queried	\REGISTRY\USER\S-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	Xclinet.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 ME FOR AN EXPLAINETION.txt	svchost.exe

Executes dropped EXE 2 IoCs

pid	Process
1992	swewni.exe
4800	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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-557049126-2506969350-2798870634-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\xworm connected? = "C:\\Users\\Admin\\AppData\\Roaming\\xworm connected?.exe"	Xclinet.exe

Drops desktop.ini file(s) 34 IoCs

description	ioc	Process
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-557049126-2506969350-2798870634-1000\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\Windows\Start Menu\Programs\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AccountPictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\Saved Pictures\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\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\OneDrive\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Saved Games\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\Windows\Start Menu\Programs\Accessories\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\Camera Roll\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Music\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\Windows\Libraries\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\Desktop.ini	svchost.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
33	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
1840	schtasks.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-557049126-2506969350-2798870634-1000_Classes\Local Settings	svchost.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4800	svchost.exe

Suspicious behavior: EnumeratesProcesses 46 IoCs

pid	Process
4968	Xclinet.exe
4968	Xclinet.exe
1992	swewni.exe
1992	swewni.exe
1992	swewni.exe
1992	swewni.exe
1992	swewni.exe
1992	swewni.exe
1992	swewni.exe
1992	swewni.exe
1992	swewni.exe
1992	swewni.exe
1992	swewni.exe
1992	swewni.exe
1992	swewni.exe
1992	swewni.exe
1992	swewni.exe
1992	swewni.exe
1992	swewni.exe
1992	swewni.exe
1992	swewni.exe
1992	swewni.exe
1992	swewni.exe
1992	swewni.exe
4800	svchost.exe
4800	svchost.exe
4800	svchost.exe
4800	svchost.exe
4800	svchost.exe
4800	svchost.exe
4800	svchost.exe
4800	svchost.exe
4800	svchost.exe
4800	svchost.exe
4800	svchost.exe
4800	svchost.exe
4800	svchost.exe
4800	svchost.exe
4800	svchost.exe
4800	svchost.exe
4800	svchost.exe
4800	svchost.exe
4800	svchost.exe
4800	svchost.exe
4800	svchost.exe
4800	svchost.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	4968	Xclinet.exe
Token: SeDebugPrivilege	4968	Xclinet.exe
Token: 33	4152	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	4152	AUDIODG.EXE
Token: SeDebugPrivilege	1992	swewni.exe
Token: SeDebugPrivilege	4800	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4968	Xclinet.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4968 wrote to memory of 1840	4968	Xclinet.exe	97
PID 4968 wrote to memory of 1840	4968	Xclinet.exe	97
PID 4968 wrote to memory of 1992	4968	Xclinet.exe	111
PID 4968 wrote to memory of 1992	4968	Xclinet.exe	111
PID 1992 wrote to memory of 4800	1992	swewni.exe	112
PID 1992 wrote to memory of 4800	1992	swewni.exe	112
PID 4800 wrote to memory of 648	4800	svchost.exe	113
PID 4800 wrote to memory of 648	4800	svchost.exe	113
PID 4968 wrote to memory of 1592	4968	Xclinet.exe	115
PID 4968 wrote to memory of 1592	4968	Xclinet.exe	115

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

C:\Users\Admin\AppData\Local\Temp\Xclinet.exe
"C:\Users\Admin\AppData\Local\Temp\Xclinet.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4968
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "xworm connected?" /tr "C:\Users\Admin\AppData\Roaming\xworm connected?.exe"
  2⤵
  - Creates scheduled task(s)
  PID:1840
- C:\Users\Admin\AppData\Local\Temp\swewni.exe
  "C:\Users\Admin\AppData\Local\Temp\swewni.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1992
- - C:\Users\Admin\AppData\Roaming\svchost.exe
    "C:\Users\Admin\AppData\Roaming\svchost.exe"
    3⤵
    - Checks computer location settings
    - Drops startup file
    - Executes dropped EXE
    - Drops desktop.ini file(s)
    - Modifies registry class
    - Suspicious behavior: AddClipboardFormatListener
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4800
  - - C:\Windows\system32\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\READ ME FOR AN EXPLAINETION.txt
      4⤵
      PID:648
- C:\Windows\SYSTEM32\CMD.EXE
  "CMD.EXE"
  2⤵
  PID:1592

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x410 0x31c
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4152

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\swewni.exe

Filesize
90KB

MD5
68a7df17272b831cfc66c1032c32facf

SHA1
dea12fb894f88ed6c905ca56b424252909d91c24

SHA256
4f08c19447c00c39129518e6694bd1780174912b39327f5468e8523a2e423e5d

SHA512
d555da23a9b1fa25988afb6c530de2d15f6a3494603e43d220a35f1c605c2537287daf5a6876360fdec83e41ab5d876f6dbac06c25e896ac5902fc9b85f3ea25

Download Submit
C:\Users\Admin\Desktop\READ ME FOR AN EXPLAINETION.txt

Filesize
1KB

MD5
43779c2e45e690a7725dec568068513e

SHA1
9e89a34b8d270788c4b690348563d83ac17436ea

SHA256
4593281a0ce90b519b799ac1d04af6643a0ba37b7cef27aad16ee9dead959545

SHA512
60aed98583262f3f44b845b73bdf13b5db19e8020a4dc28aa2196ff9762e2320c9260c0034768e29136a92200b1f8b6739e76fcdb905dfca03ea0a52ee326d58

Download Submit
memory/1992-18-0x0000000000210000-0x000000000022C000-memory.dmp

Filesize
112KB

Download
memory/1992-19-0x00007FFFEDF60000-0x00007FFFEEA21000-memory.dmp

Filesize
10.8MB

Download
memory/1992-32-0x00007FFFEDF60000-0x00007FFFEEA21000-memory.dmp

Filesize
10.8MB

Download
memory/4800-86-0x00007FFFEDF60000-0x00007FFFEEA21000-memory.dmp

Filesize
10.8MB

Download
memory/4800-33-0x00007FFFEDF60000-0x00007FFFEEA21000-memory.dmp

Filesize
10.8MB

Download
memory/4968-6-0x000000001CA30000-0x000000001CABE000-memory.dmp

Filesize
568KB

Download
memory/4968-0-0x00000000001A0000-0x00000000001C8000-memory.dmp

Filesize
160KB

Download
memory/4968-2-0x000000001AE50000-0x000000001AE60000-memory.dmp

Filesize
64KB

Download
memory/4968-3-0x000000001AE30000-0x000000001AE3C000-memory.dmp

Filesize
48KB

Download
memory/4968-5-0x000000001AE50000-0x000000001AE60000-memory.dmp

Filesize
64KB

Download
memory/4968-1-0x00007FFFEDF60000-0x00007FFFEEA21000-memory.dmp

Filesize
10.8MB

Download
memory/4968-85-0x000000001E300000-0x000000001E30A000-memory.dmp

Filesize
40KB

Download
memory/4968-4-0x00007FFFEDF60000-0x00007FFFEEA21000-memory.dmp

Filesize
10.8MB

Download
memory/4968-87-0x000000001B9E0000-0x000000001B9EA000-memory.dmp

Filesize
40KB

Download