chaos | 3bd7ba1da919719a36e943d1c84a3b976a57d7f4d279b3e81f821f2a5a2e7c40

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21-08-2024 16:23

240821-tvvaqssbrl 10

21-08-2024 15:52

240821-ta3rda1blk 10

22-01-2022 14:10

220122-rgn6fsbfgr 10

Analysis

max time kernel
307s
max time network
360s
platform
windows10_x64
resource
win10-en-20211208
submitted
22-01-2022 14:10

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General

Target

666 virus.exe
Size

517KB
MD5

df0edf8b66d6a09c96802357d088d31b
SHA1

4018b609ef6e77c63c4028a12ca66051379b0633
SHA256

3bd7ba1da919719a36e943d1c84a3b976a57d7f4d279b3e81f821f2a5a2e7c40
SHA512

ee67b4e8465118b70820c7048620e82799c447d80f5d0dc97162c94ad7ce26ced0f273d6f18601be8cbf8340066755cff131563d4333bbc7258885addbf436db

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
behavioral2/memory/2368-115-0x00000000008F0000-0x0000000000976000-memory.dmp	family_chaos
behavioral2/files/0x000500000001ab32-117.dat	family_chaos
behavioral2/files/0x000500000001ab32-116.dat	family_chaos

Executes dropped EXE 1 IoCs

pid	Process
3256	svchost.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url	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
T1081

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\wn8gptif0.jpg"	svchost.exe

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

System Information Discovery
T1082

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000_Classes\Local Settings	svchost.exe
Key created	\REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000_Classes\Local Settings	OpenWith.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3256	svchost.exe

Suspicious behavior: EnumeratesProcesses 27 IoCs

pid	Process
2368	666 virus.exe
2368	666 virus.exe
2368	666 virus.exe
2368	666 virus.exe
2368	666 virus.exe
2368	666 virus.exe
2368	666 virus.exe
2368	666 virus.exe
2368	666 virus.exe
2368	666 virus.exe
2368	666 virus.exe
2368	666 virus.exe
2368	666 virus.exe
3256	svchost.exe
3256	svchost.exe
3256	svchost.exe
3256	svchost.exe
3256	svchost.exe
3256	svchost.exe
3256	svchost.exe
3256	svchost.exe
3256	svchost.exe
3256	svchost.exe
3256	svchost.exe
3256	svchost.exe
3256	svchost.exe
3256	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2368	666 virus.exe
Token: SeDebugPrivilege	3256	svchost.exe

Suspicious use of SetWindowsHookEx 13 IoCs

pid	Process
1320	OpenWith.exe
1320	OpenWith.exe
1320	OpenWith.exe
1320	OpenWith.exe
1320	OpenWith.exe
1320	OpenWith.exe
1320	OpenWith.exe
1320	OpenWith.exe
1320	OpenWith.exe
1320	OpenWith.exe
1320	OpenWith.exe
1320	OpenWith.exe
1320	OpenWith.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2368 wrote to memory of 3256	2368	666 virus.exe	68
PID 2368 wrote to memory of 3256	2368	666 virus.exe	68

C:\Users\Admin\AppData\Local\Temp\666 virus.exe
"C:\Users\Admin\AppData\Local\Temp\666 virus.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2368
- C:\Users\Admin\AppData\Roaming\svchost.exe
  "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Sets desktop wallpaper using registry
  - Modifies registry class
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3256

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:1320

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:776

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Defacement

T1491

Replay Monitor

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Downloads

memory/2368-115-0x00000000008F0000-0x0000000000976000-memory.dmp

Filesize
536KB

Download
memory/3256-118-0x000000001BD02000-0x000000001BD03000-memory.dmp

Filesize
4KB

Download