chaos | 9d898d6795f3d5cab2fbdb217d24d7504d7da4e67c7ed41e9c1468e49f96de00

Analysis

max time kernel
94s
max time network
119s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
26-09-2024 16:28

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General

Target

20240926a1a903c5a6cb70282502e31c0a5baab7destroyerwannacry.exe
Size

21KB
MD5

a1a903c5a6cb70282502e31c0a5baab7
SHA1

0a452c52690ed627a3f072d372454b3e8f6ce73a
SHA256

9d898d6795f3d5cab2fbdb217d24d7504d7da4e67c7ed41e9c1468e49f96de00
SHA512

f8b48b0a04f8bbf6f9a63999ad1ded375ace71bb432c18f421c5832ccf65984bab876af4220212a40e45596c9f3fdcc0c5ef8a0facf4a401a54617c7cda53559
SSDEEP

384:u3MLWHn3kIM6s33BK9vp1V+tQoN7J/r91CrbCM7ex:Sn3kIU3xOvpOQq/r9Sbzex

Score

10^/10

chaos ransomware spyware stealer

Malware Config

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 2 IoCs

resource	yara_rule
behavioral2/memory/2392-1-0x0000000000050000-0x000000000005C000-memory.dmp	family_chaos
behavioral2/files/0x0007000000023511-7.dat	family_chaos

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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	20240926a1a903c5a6cb70282502e31c0a5baab7destroyerwannacry.exe
Key value queried	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	svchost.exe

Drops startup file 3 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
2044	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\Desktop\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\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\Documents\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	F:\$RECYCLE.BIN\S-1-5-21-355097885-2402257403-2971294179-1000\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\Recent\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\Pictures\Camera Roll\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\Public\Music\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\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\System 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\OneDrive\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\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\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\Libraries\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\Admin\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\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\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	svchost.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\Local Settings	svchost.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2144	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2044	svchost.exe

Suspicious behavior: EnumeratesProcesses 51 IoCs

pid	Process
2392	20240926a1a903c5a6cb70282502e31c0a5baab7destroyerwannacry.exe
2392	20240926a1a903c5a6cb70282502e31c0a5baab7destroyerwannacry.exe
2392	20240926a1a903c5a6cb70282502e31c0a5baab7destroyerwannacry.exe
2392	20240926a1a903c5a6cb70282502e31c0a5baab7destroyerwannacry.exe
2392	20240926a1a903c5a6cb70282502e31c0a5baab7destroyerwannacry.exe
2392	20240926a1a903c5a6cb70282502e31c0a5baab7destroyerwannacry.exe
2392	20240926a1a903c5a6cb70282502e31c0a5baab7destroyerwannacry.exe
2392	20240926a1a903c5a6cb70282502e31c0a5baab7destroyerwannacry.exe
2392	20240926a1a903c5a6cb70282502e31c0a5baab7destroyerwannacry.exe
2392	20240926a1a903c5a6cb70282502e31c0a5baab7destroyerwannacry.exe
2392	20240926a1a903c5a6cb70282502e31c0a5baab7destroyerwannacry.exe
2392	20240926a1a903c5a6cb70282502e31c0a5baab7destroyerwannacry.exe
2392	20240926a1a903c5a6cb70282502e31c0a5baab7destroyerwannacry.exe
2392	20240926a1a903c5a6cb70282502e31c0a5baab7destroyerwannacry.exe
2392	20240926a1a903c5a6cb70282502e31c0a5baab7destroyerwannacry.exe
2392	20240926a1a903c5a6cb70282502e31c0a5baab7destroyerwannacry.exe
2392	20240926a1a903c5a6cb70282502e31c0a5baab7destroyerwannacry.exe
2392	20240926a1a903c5a6cb70282502e31c0a5baab7destroyerwannacry.exe
2392	20240926a1a903c5a6cb70282502e31c0a5baab7destroyerwannacry.exe
2392	20240926a1a903c5a6cb70282502e31c0a5baab7destroyerwannacry.exe
2392	20240926a1a903c5a6cb70282502e31c0a5baab7destroyerwannacry.exe
2392	20240926a1a903c5a6cb70282502e31c0a5baab7destroyerwannacry.exe
2392	20240926a1a903c5a6cb70282502e31c0a5baab7destroyerwannacry.exe
2392	20240926a1a903c5a6cb70282502e31c0a5baab7destroyerwannacry.exe
2392	20240926a1a903c5a6cb70282502e31c0a5baab7destroyerwannacry.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe
2044	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2392	20240926a1a903c5a6cb70282502e31c0a5baab7destroyerwannacry.exe
Token: SeDebugPrivilege	2044	svchost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2392 wrote to memory of 2044	2392	20240926a1a903c5a6cb70282502e31c0a5baab7destroyerwannacry.exe	87
PID 2392 wrote to memory of 2044	2392	20240926a1a903c5a6cb70282502e31c0a5baab7destroyerwannacry.exe	87
PID 2044 wrote to memory of 2144	2044	svchost.exe	90
PID 2044 wrote to memory of 2144	2044	svchost.exe	90

C:\Users\Admin\AppData\Local\Temp\20240926a1a903c5a6cb70282502e31c0a5baab7destroyerwannacry.exe
"C:\Users\Admin\AppData\Local\Temp\20240926a1a903c5a6cb70282502e31c0a5baab7destroyerwannacry.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2392
- 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)
  - Modifies registry class
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2044
- - 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:2144

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

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Downloads

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

Filesize
21KB

MD5
a1a903c5a6cb70282502e31c0a5baab7

SHA1
0a452c52690ed627a3f072d372454b3e8f6ce73a

SHA256
9d898d6795f3d5cab2fbdb217d24d7504d7da4e67c7ed41e9c1468e49f96de00

SHA512
f8b48b0a04f8bbf6f9a63999ad1ded375ace71bb432c18f421c5832ccf65984bab876af4220212a40e45596c9f3fdcc0c5ef8a0facf4a401a54617c7cda53559

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

Filesize
498B

MD5
f3467a18bc9bff5d1fa6fde886434b25

SHA1
a99e70caecf250cbb3b99407225305dd13a5c397

SHA256
214e91de820244192eba3647e738b19807fd67cdb7c63cabbcdc17c8de03e783

SHA512
cdd9b1f4037e8e2f111b0331666dfdcf33a7a86c075b548148608e2c6410eda510afe4817b3375b0d6acb0e923c9e54b359226d538f8b74db921eac70b8fe840

Download Submit
memory/2044-15-0x00007FF8FA5E0000-0x00007FF8FB0A1000-memory.dmp

Filesize
10.8MB

Download
memory/2044-74-0x00007FF8FA5E0000-0x00007FF8FB0A1000-memory.dmp

Filesize
10.8MB

Download
memory/2392-0-0x00007FF8FA5E3000-0x00007FF8FA5E5000-memory.dmp

Filesize
8KB

Download
memory/2392-1-0x0000000000050000-0x000000000005C000-memory.dmp

Filesize
48KB

Download
memory/2392-2-0x00007FF8FA5E3000-0x00007FF8FA5E5000-memory.dmp

Filesize
8KB

Download