chaos | 41dc37e9a04507ff7f42b3fef05dac411c28b2016779461c5405b219d44527ca

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
23-02-2025 18:24

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General

Target

2025-02-23_58647f59cddd222604d96d41f3e09e5b_wannacry.exe
Size

574KB
MD5

58647f59cddd222604d96d41f3e09e5b
SHA1

f8adc427de6c3eb4d271a0f72d07fd8e193793ba
SHA256

41dc37e9a04507ff7f42b3fef05dac411c28b2016779461c5405b219d44527ca
SHA512

eb0df23fdddcdb7adc625730fae0793fb9b610157589a2d8502e8bcd2bb280ccb7dffd50e5c68a146a353d7fe171f8bd37dc9e838d9f17d251dd4b9d26abbf80
SSDEEP

12288:YFghl4t7gdFiKhZgiUxheMYKlApW7Vq2NAhLpq5lZc1D:YF0ZniBsvVdd1

Score

10^/10

chaos discovery 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/2020-1-0x0000000000BF0000-0x0000000000C84000-memory.dmp	family_chaos
behavioral1/files/0x00080000000120f9-6.dat	family_chaos
behavioral1/memory/2176-7-0x00000000000F0000-0x0000000000184000-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\Footsex.url	Footsex.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini	Footsex.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Awhman	Footsex.exe

Executes dropped EXE 1 IoCs

pid	Process
2176	Footsex.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\Pictures\desktop.ini	Footsex.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	Footsex.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	Footsex.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini	Footsex.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	Footsex.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	Footsex.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini	Footsex.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini	Footsex.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	Footsex.exe
File opened for modification	C:\Users\Admin\Favorites\Links for United States\desktop.ini	Footsex.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini	Footsex.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	Footsex.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	Footsex.exe
File opened for modification	C:\Users\Admin\Saved Games\desktop.ini	Footsex.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini	Footsex.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini	Footsex.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	Footsex.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini	Footsex.exe
File opened for modification	C:\Users\Public\Music\Sample Music\desktop.ini	Footsex.exe
File opened for modification	C:\Users\Public\Videos\Sample Videos\desktop.ini	Footsex.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini	Footsex.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini	Footsex.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	Footsex.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	Footsex.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	Footsex.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	Footsex.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini	Footsex.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	Footsex.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	Footsex.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-4177215427-74451935-3209572229-1000\desktop.ini	Footsex.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	Footsex.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	Footsex.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	Footsex.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	Footsex.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-1-5-21-4177215427-74451935-3209572229-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\parecg6vj.jpg"	Footsex.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AcroRd32.exe

Modifies registry class 7 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000_CLASSES\_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000_CLASSES\_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000_CLASSES\_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000_CLASSES\_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000_CLASSES\_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000_CLASSES\_auto_file\shell\Read	rundll32.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2176	Footsex.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2020	2025-02-23_58647f59cddd222604d96d41f3e09e5b_wannacry.exe
2020	2025-02-23_58647f59cddd222604d96d41f3e09e5b_wannacry.exe
2020	2025-02-23_58647f59cddd222604d96d41f3e09e5b_wannacry.exe
2176	Footsex.exe
2176	Footsex.exe
2176	Footsex.exe
2176	Footsex.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
896	AcroRd32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2020	2025-02-23_58647f59cddd222604d96d41f3e09e5b_wannacry.exe
Token: SeDebugPrivilege	2176	Footsex.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
896	AcroRd32.exe
896	AcroRd32.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2020 wrote to memory of 2176	2020	2025-02-23_58647f59cddd222604d96d41f3e09e5b_wannacry.exe	30
PID 2020 wrote to memory of 2176	2020	2025-02-23_58647f59cddd222604d96d41f3e09e5b_wannacry.exe	30
PID 2020 wrote to memory of 2176	2020	2025-02-23_58647f59cddd222604d96d41f3e09e5b_wannacry.exe	30
PID 2176 wrote to memory of 2888	2176	Footsex.exe	33
PID 2176 wrote to memory of 2888	2176	Footsex.exe	33
PID 2176 wrote to memory of 2888	2176	Footsex.exe	33
PID 2888 wrote to memory of 896	2888	rundll32.exe	34
PID 2888 wrote to memory of 896	2888	rundll32.exe	34
PID 2888 wrote to memory of 896	2888	rundll32.exe	34
PID 2888 wrote to memory of 896	2888	rundll32.exe	34

C:\Users\Admin\AppData\Local\Temp\2025-02-23_58647f59cddd222604d96d41f3e09e5b_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-23_58647f59cddd222604d96d41f3e09e5b_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2020
- C:\Users\Admin\AppData\Roaming\Footsex.exe
  "C:\Users\Admin\AppData\Roaming\Footsex.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:2176
- - C:\Windows\system32\rundll32.exe
    "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Roaming\Awhman
    3⤵
    - Modifies registry class
    - Suspicious use of WriteProcessMemory
    PID:2888
  - - C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
      "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Roaming\Awhman"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of SetWindowsHookEx
      PID:896

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Defacement

T1491

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
9d3c03b921f92e0c4690ff2ce250f605

SHA1
27ba899ec72bd7747085db84976ecac899109bf1

SHA256
080539d598f8d897059df013b3ac9f8b64bd1fb42b2424cb3c4da731b7f58d0d

SHA512
9c655381551e3a031821bc397d729242a49ea876fd8276da5e51315d45671a43591233ab3ce036efafcc55defc61b9678b3db38f009952999588ce23cc5f113b

Download Submit
C:\Users\Admin\AppData\Roaming\Footsex.exe

Filesize
574KB

MD5
58647f59cddd222604d96d41f3e09e5b

SHA1
f8adc427de6c3eb4d271a0f72d07fd8e193793ba

SHA256
41dc37e9a04507ff7f42b3fef05dac411c28b2016779461c5405b219d44527ca

SHA512
eb0df23fdddcdb7adc625730fae0793fb9b610157589a2d8502e8bcd2bb280ccb7dffd50e5c68a146a353d7fe171f8bd37dc9e838d9f17d251dd4b9d26abbf80

Download Submit
C:\Users\Admin\Documents\Awhman

Filesize
1KB

MD5
e054c59d8bdfe2217d55974dc1ac3494

SHA1
908850e8bc148c92536aa22a30af3be8f60a19dc

SHA256
981181c4266fcaf965925c02e6cc8cff433389a39fc6dd4a17cd3d25e10f5e07

SHA512
f11187ed9a85e9b2bf39e6533b6bf97148b2363aba272162f4a4719e315f16009884fa35add476a4b3755dcee73bc6a97be2bc02a2ed507d09c5d26292801b66

Download Submit
memory/2020-0-0x000007FEF55B3000-0x000007FEF55B4000-memory.dmp

Filesize
4KB

Download
memory/2020-1-0x0000000000BF0000-0x0000000000C84000-memory.dmp

Filesize
592KB

Download
memory/2176-7-0x00000000000F0000-0x0000000000184000-memory.dmp

Filesize
592KB

Download
memory/2176-16-0x000007FEF55B0000-0x000007FEF5F9C000-memory.dmp

Filesize
9.9MB

Download
memory/2176-24-0x000007FEF55B0000-0x000007FEF5F9C000-memory.dmp

Filesize
9.9MB

Download
memory/2176-475-0x000007FEF55B0000-0x000007FEF5F9C000-memory.dmp

Filesize
9.9MB

Download