chaos | c773c6821f2962c2c89e482ead7edc03768a9c9835cdd264c3c2189f2c8dbd40

Analysis

max time kernel
93s
max time network
194s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
19-02-2025 21:24

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General

Target

Bloody Kmax.exe
Size

7.4MB
MD5

cde22b810942c0c6eef2e844a2fe8eae
SHA1

633ec7f9defbda8c7045f69e0a5ac1654068def6
SHA256

c773c6821f2962c2c89e482ead7edc03768a9c9835cdd264c3c2189f2c8dbd40
SHA512

e666fd809335888e4cf725e45f10fc7353dd3801a703f39353985b7ef35c6de1915abb22a54b4b1608fee86dd1c1c7b6c7b0b9d5215910164e1fb2469c32e58a
SSDEEP

24576:aaL3vVD8Lpq5u+B0cAUmhInhvctethPLqrzHBCBoNyUr4epjVGXWkY6V5vovNYiw:L9gvS3thO/EabZkY6LVm6fiMhZnLDUR

Score

10^/10

chaos evasion ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\Documents\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: KmaXx Bitcoin Address: bc1qlnzcep4l4ac0ttdrq7awxev9ehu465f2vpt9x0

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 2 IoCs

resource	yara_rule
behavioral1/memory/4896-1-0x0000000000E70000-0x00000000015D8000-memory.dmp	family_chaos
behavioral1/files/0x000500000001e96c-7.dat	family_chaos

Chaos family
chaos

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
348	bcdedit.exe
3956	bcdedit.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-1479699283-3000499823-2337359760-1000\Control Panel\International\Geo\Nation	Bloody Kmax.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1479699283-3000499823-2337359760-1000\Control Panel\International\Geo\Nation	svchost.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
2060	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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\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\OneDrive\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\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\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\Pictures\Saved Pictures\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\AccountPictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-1479699283-3000499823-2337359760-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\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\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\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\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\Accessibility\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\SendTo\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\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\Start Menu\Programs\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\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\Start Menu\Programs\Accessories\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\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-1-5-21-1479699283-3000499823-2337359760-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ew0n92x3d.jpg"	svchost.exe

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

System Information Discovery
T1082

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1479699283-3000499823-2337359760-1000_Classes\Local Settings	svchost.exe
Key created	\REGISTRY\USER\S-1-5-21-1479699283-3000499823-2337359760-1000_Classes\Local Settings	OpenWith.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
3652	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2060	svchost.exe

Suspicious behavior: EnumeratesProcesses 46 IoCs

pid	Process
4896	Bloody Kmax.exe
4896	Bloody Kmax.exe
4896	Bloody Kmax.exe
4896	Bloody Kmax.exe
4896	Bloody Kmax.exe
4896	Bloody Kmax.exe
4896	Bloody Kmax.exe
4896	Bloody Kmax.exe
4896	Bloody Kmax.exe
4896	Bloody Kmax.exe
4896	Bloody Kmax.exe
4896	Bloody Kmax.exe
4896	Bloody Kmax.exe
4896	Bloody Kmax.exe
4896	Bloody Kmax.exe
4896	Bloody Kmax.exe
4896	Bloody Kmax.exe
4896	Bloody Kmax.exe
4896	Bloody Kmax.exe
4896	Bloody Kmax.exe
4896	Bloody Kmax.exe
4896	Bloody Kmax.exe
4896	Bloody Kmax.exe
4896	Bloody Kmax.exe
2060	svchost.exe
2060	svchost.exe
2060	svchost.exe
2060	svchost.exe
2060	svchost.exe
2060	svchost.exe
2060	svchost.exe
2060	svchost.exe
2060	svchost.exe
2060	svchost.exe
2060	svchost.exe
2060	svchost.exe
2060	svchost.exe
2060	svchost.exe
2060	svchost.exe
2060	svchost.exe
2060	svchost.exe
2060	svchost.exe
2060	svchost.exe
2060	svchost.exe
2060	svchost.exe
2060	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4896	Bloody Kmax.exe
Token: SeDebugPrivilege	2060	svchost.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
5100	OpenWith.exe
5100	OpenWith.exe
5100	OpenWith.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4896 wrote to memory of 2060	4896	Bloody Kmax.exe	89
PID 4896 wrote to memory of 2060	4896	Bloody Kmax.exe	89
PID 2060 wrote to memory of 4432	2060	svchost.exe	91
PID 2060 wrote to memory of 4432	2060	svchost.exe	91
PID 4432 wrote to memory of 348	4432	cmd.exe	93
PID 4432 wrote to memory of 348	4432	cmd.exe	93
PID 4432 wrote to memory of 3956	4432	cmd.exe	94
PID 4432 wrote to memory of 3956	4432	cmd.exe	94
PID 2060 wrote to memory of 3652	2060	svchost.exe	95
PID 2060 wrote to memory of 3652	2060	svchost.exe	95

C:\Users\Admin\AppData\Local\Temp\Bloody Kmax.exe
"C:\Users\Admin\AppData\Local\Temp\Bloody Kmax.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4896
- C:\Users\Admin\AppData\Roaming\svchost.exe
  "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Drops desktop.ini file(s)
  - Sets desktop wallpaper using registry
  - Modifies registry class
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2060
- - 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:4432
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:348
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:3956
- - 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:3652

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:5100

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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
7.4MB

MD5
cde22b810942c0c6eef2e844a2fe8eae

SHA1
633ec7f9defbda8c7045f69e0a5ac1654068def6

SHA256
c773c6821f2962c2c89e482ead7edc03768a9c9835cdd264c3c2189f2c8dbd40

SHA512
e666fd809335888e4cf725e45f10fc7353dd3801a703f39353985b7ef35c6de1915abb22a54b4b1608fee86dd1c1c7b6c7b0b9d5215910164e1fb2469c32e58a

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

Filesize
956B

MD5
21501b5bf2cbccf8dea4c2f064afb233

SHA1
ea75a95c8c1fbd35e05a8fc63e892801aa8ceaf9

SHA256
ef1d252cb05fa5030012511212d472855067477a6930e33ab034064de5c23b2e

SHA512
f0b0352bc047bd0b31a0bc188fff1ee9e039c0cf05f69d8cf252ab0036b343f9fc02e99ef42d72e6577e5a571e8544bc945c9ad16033b6da0c77418040f92520

Download Submit
memory/2060-15-0x00007FF80A313000-0x00007FF80A315000-memory.dmp

Filesize
8KB

Download
memory/2060-474-0x00007FF80A313000-0x00007FF80A315000-memory.dmp

Filesize
8KB

Download
memory/4896-0-0x00007FF80A2C3000-0x00007FF80A2C5000-memory.dmp

Filesize
8KB

Download
memory/4896-1-0x0000000000E70000-0x00000000015D8000-memory.dmp

Filesize
7.4MB

Download
memory/4896-2-0x00007FF80A2C3000-0x00007FF80A2C5000-memory.dmp

Filesize
8KB

Download