chaos | ddebb5a4015b57a6cc05cbbf665536377541225f525e0ed3b9af65f7a29d9214

Analysis

max time kernel
118s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02/02/2025, 09:36

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General

Target

2025-02-02_8429721eb08da641d5246d819838cc2a_wannacry.exe
Size

328KB
MD5

8429721eb08da641d5246d819838cc2a
SHA1

1ebb9500641de2fbe3cd86f9920f8ee4d5cb4628
SHA256

ddebb5a4015b57a6cc05cbbf665536377541225f525e0ed3b9af65f7a29d9214
SHA512

5aa6cbae910575f3d4330d30031efea32cca79f3922fd75dd6eb87f395523ab61b50649ded9a207110ccc9d065434356d084387b7bf28f3d9e2b222a7afed70b
SSDEEP

6144:I4r9CYPyPzHka7IF2UDBWe4KGgBdUhcX7elbKTu:IMPyPzEa0F2UXfBd3X3u

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/2676-1-0x0000000001050000-0x00000000010A8000-memory.dmp	family_chaos
behavioral1/files/0x000c000000012268-5.dat	family_chaos
behavioral1/memory/2700-7-0x0000000000CA0000-0x0000000000CF8000-memory.dmp	family_chaos

Chaos family
chaos

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
2700	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\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\Searches\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\Sample Music\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\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\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
File opened for modification	C:\Users\Admin\Downloads\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\Start Menu\Programs\Accessories\System Tools\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Music\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\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\Links\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\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\Public\Videos\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\SendTo\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\Sample Videos\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-1846800975-3917212583-2893086201-1000\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

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\phzxbzmqm.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
1504	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2700	svchost.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2676	2025-02-02_8429721eb08da641d5246d819838cc2a_wannacry.exe
2676	2025-02-02_8429721eb08da641d5246d819838cc2a_wannacry.exe
2676	2025-02-02_8429721eb08da641d5246d819838cc2a_wannacry.exe
2700	svchost.exe
2700	svchost.exe
2700	svchost.exe
2700	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2676	2025-02-02_8429721eb08da641d5246d819838cc2a_wannacry.exe
Token: SeDebugPrivilege	2700	svchost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2676 wrote to memory of 2700	2676	2025-02-02_8429721eb08da641d5246d819838cc2a_wannacry.exe	30
PID 2676 wrote to memory of 2700	2676	2025-02-02_8429721eb08da641d5246d819838cc2a_wannacry.exe	30
PID 2676 wrote to memory of 2700	2676	2025-02-02_8429721eb08da641d5246d819838cc2a_wannacry.exe	30
PID 2700 wrote to memory of 1504	2700	svchost.exe	32
PID 2700 wrote to memory of 1504	2700	svchost.exe	32
PID 2700 wrote to memory of 1504	2700	svchost.exe	32

C:\Users\Admin\AppData\Local\Temp\2025-02-02_8429721eb08da641d5246d819838cc2a_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-02_8429721eb08da641d5246d819838cc2a_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2676
- 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:2700
- - 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:1504

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
328KB

MD5
8429721eb08da641d5246d819838cc2a

SHA1
1ebb9500641de2fbe3cd86f9920f8ee4d5cb4628

SHA256
ddebb5a4015b57a6cc05cbbf665536377541225f525e0ed3b9af65f7a29d9214

SHA512
5aa6cbae910575f3d4330d30031efea32cca79f3922fd75dd6eb87f395523ab61b50649ded9a207110ccc9d065434356d084387b7bf28f3d9e2b222a7afed70b

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

Filesize
502B

MD5
6565989715ba1170dce5320536a2c312

SHA1
18c2cbc809dabfe29f1029e3b276fa43dc7658dc

SHA256
8bb7c960561e3483b96ef73b9c55384cc68b111f74592e3aeffe69cb6b10b246

SHA512
813fde93ab1f92859a7583957778e260051d5eadbd5b4f214bbe60c2930b7bacea56d0ab6c06667357c55d21588173f771a344c32d1af848dc06dd814a56d3c8

Download Submit
memory/2676-0-0x000007FEF6123000-0x000007FEF6124000-memory.dmp

Filesize
4KB

Download
memory/2676-1-0x0000000001050000-0x00000000010A8000-memory.dmp

Filesize
352KB

Download
memory/2700-7-0x0000000000CA0000-0x0000000000CF8000-memory.dmp

Filesize
352KB

Download
memory/2700-8-0x000007FEF6120000-0x000007FEF6B0C000-memory.dmp

Filesize
9.9MB

Download
memory/2700-13-0x000007FEF6120000-0x000007FEF6B0C000-memory.dmp

Filesize
9.9MB

Download
memory/2700-523-0x000007FEF6120000-0x000007FEF6B0C000-memory.dmp

Filesize
9.9MB

Download