chaos | 74422b2aad789ee68ad768e7a7b0707e3ef690460728d13b8a16a0428d3ead4d

Analysis

max time kernel
80s
max time network
19s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02-10-2024 23:46

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General

Target

20241002cebb899489aed0f2f1d021913224fb02destroyerwannacry.exe
Size

83KB
MD5

cebb899489aed0f2f1d021913224fb02
SHA1

d9efd1333a59bc9f4ca626c44e99075bde25fd73
SHA256

74422b2aad789ee68ad768e7a7b0707e3ef690460728d13b8a16a0428d3ead4d
SHA512

a90214a4328219d33bca2899fdaf5010cb299da1370180c0a5db0a7da5922919f2248afcb982e3b8833a4fc5ee0fc077594fa4ce0f4b957c600fddfd7a01e5c0
SSDEEP

1536:Wo2D0oWr9XemsvBhzS7NyKkKHHR72W0F00m05000tx0Zpv9w40gGpcK1U+WCvse7:Wo00oWr9XSu7NyKkKHN2W0F00m05000h

Score

10^/10

chaos ransomware spyware stealer

Malware Config

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/320-1-0x0000000000BF0000-0x0000000000C0C000-memory.dmp	family_chaos
behavioral1/files/0x00030000000178b0-5.dat	family_chaos
behavioral1/memory/1704-7-0x0000000000A40000-0x0000000000A5C000-memory.dmp	family_chaos

Renames multiple (172) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

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
1704	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\Links\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\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\Sample Music\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-457978338-2990298471-2379561640-1000\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\Public\Pictures\Sample Pictures\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\Public\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Searches\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\Recent\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\Programs\Administrative Tools\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\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\Public\Videos\Sample Videos\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\Libraries\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Saved Games\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\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\Accessibility\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\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\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\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-1-5-21-457978338-2990298471-2379561640-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\di8kanlhl.jpg"	svchost.exe

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

System Information Discovery
T1082

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1372	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1704	svchost.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
320	20241002cebb899489aed0f2f1d021913224fb02destroyerwannacry.exe
320	20241002cebb899489aed0f2f1d021913224fb02destroyerwannacry.exe
320	20241002cebb899489aed0f2f1d021913224fb02destroyerwannacry.exe
1704	svchost.exe
1704	svchost.exe
1704	svchost.exe
1704	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	320	20241002cebb899489aed0f2f1d021913224fb02destroyerwannacry.exe
Token: SeDebugPrivilege	1704	svchost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 320 wrote to memory of 1704	320	20241002cebb899489aed0f2f1d021913224fb02destroyerwannacry.exe	30
PID 320 wrote to memory of 1704	320	20241002cebb899489aed0f2f1d021913224fb02destroyerwannacry.exe	30
PID 320 wrote to memory of 1704	320	20241002cebb899489aed0f2f1d021913224fb02destroyerwannacry.exe	30
PID 1704 wrote to memory of 1372	1704	svchost.exe	32
PID 1704 wrote to memory of 1372	1704	svchost.exe	32
PID 1704 wrote to memory of 1372	1704	svchost.exe	32

C:\Users\Admin\AppData\Local\Temp\20241002cebb899489aed0f2f1d021913224fb02destroyerwannacry.exe
"C:\Users\Admin\AppData\Local\Temp\20241002cebb899489aed0f2f1d021913224fb02destroyerwannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:320
- 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:1704
- - 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:1372

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

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Defacement

T1491

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Downloads

C:\Users\Admin\AppData\Roaming\svchost.exe

Filesize
83KB

MD5
cebb899489aed0f2f1d021913224fb02

SHA1
d9efd1333a59bc9f4ca626c44e99075bde25fd73

SHA256
74422b2aad789ee68ad768e7a7b0707e3ef690460728d13b8a16a0428d3ead4d

SHA512
a90214a4328219d33bca2899fdaf5010cb299da1370180c0a5db0a7da5922919f2248afcb982e3b8833a4fc5ee0fc077594fa4ce0f4b957c600fddfd7a01e5c0

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

Filesize
8B

MD5
4a640322cff558e84cb098cca9270ce0

SHA1
9e73ea46ed71b0f8d71ac7b9a63b890213d8f548

SHA256
86f9e5b51d3b3ba6b03058ca87dda7cae9e4e3fe0e5bf6de59eb5d35030b34d4

SHA512
3b8f275483cb2f2216fcf22ee549677ee236b5a4066fa36245d3129819c95da461da77b8737b1270d387792535100eb156aa3919fde404e3fbfce2c8d48d3618

Download Submit
memory/320-0-0x000007FEF4FA3000-0x000007FEF4FA4000-memory.dmp

Filesize
4KB

Download
memory/320-1-0x0000000000BF0000-0x0000000000C0C000-memory.dmp

Filesize
112KB

Download
memory/1704-7-0x0000000000A40000-0x0000000000A5C000-memory.dmp

Filesize
112KB

Download
memory/1704-12-0x000007FEF4FA0000-0x000007FEF598C000-memory.dmp

Filesize
9.9MB

Download
memory/1704-13-0x000007FEF4FA0000-0x000007FEF598C000-memory.dmp

Filesize
9.9MB

Download
memory/1704-406-0x000007FEF4FA0000-0x000007FEF598C000-memory.dmp

Filesize
9.9MB

Download
memory/1704-410-0x000007FEF4FA0000-0x000007FEF598C000-memory.dmp

Filesize
9.9MB

Download