chaos | ce750c7054359e9e88556d48f7eea341374b74f494caed48251185b54c9ed644

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
10-02-2024 06:26

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General

Target

2024-02-10_7051dcbe9a0837a312b09a5ae3b42430_destroyer_wannacry.exe
Size

84KB
MD5

7051dcbe9a0837a312b09a5ae3b42430
SHA1

3553ff8725a57929e438228bf141b695c13cecb4
SHA256

ce750c7054359e9e88556d48f7eea341374b74f494caed48251185b54c9ed644
SHA512

2e82160bff1fbdd6f6a9f0210dfaf831650fdefdf8e3bb70c3c2717122b107ef3610c5c5f55908843df7ba3bd3bbefc40b9d1dda07877083cbd2ab8b090a276c
SSDEEP

1536:Zo2eMtPr9b/u+hCnbKeg7hISAv8Iz/xYnPCiPlNE927Zk5L+:Zo5MtPr9b/u+yoza/xYPCSc27ZIL+

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/1936-0-0x0000000000AB0000-0x0000000000ACC000-memory.dmp	family_chaos
behavioral1/files/0x000b00000001224d-5.dat	family_chaos
behavioral1/memory/3068-7-0x0000000000360000-0x000000000037C000-memory.dmp	family_chaos

Detects command variations typically used by ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/1936-0-0x0000000000AB0000-0x0000000000ACC000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/files/0x000b00000001224d-5.dat	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/memory/3068-7-0x0000000000360000-0x000000000037C000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware

Renames multiple (199) 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
3068	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
T1552.001

Drops desktop.ini file(s) 34 IoCs

description	ioc	Process
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\Start Menu\Programs\Administrative Tools\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-3601492379-692465709-652514833-1000\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\Accessibility\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\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\Recent\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\Sample Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\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 for United States\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links\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\Contacts\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\Programs\Accessories\System Tools\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\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Saved Games\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\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\Libraries\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\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\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-1-5-21-3601492379-692465709-652514833-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\3dinx09l9.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
2124	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3068	svchost.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
1936	2024-02-10_7051dcbe9a0837a312b09a5ae3b42430_destroyer_wannacry.exe
1936	2024-02-10_7051dcbe9a0837a312b09a5ae3b42430_destroyer_wannacry.exe
1936	2024-02-10_7051dcbe9a0837a312b09a5ae3b42430_destroyer_wannacry.exe
3068	svchost.exe
3068	svchost.exe
3068	svchost.exe
3068	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1936	2024-02-10_7051dcbe9a0837a312b09a5ae3b42430_destroyer_wannacry.exe
Token: SeDebugPrivilege	3068	svchost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1936 wrote to memory of 3068	1936	2024-02-10_7051dcbe9a0837a312b09a5ae3b42430_destroyer_wannacry.exe	28
PID 1936 wrote to memory of 3068	1936	2024-02-10_7051dcbe9a0837a312b09a5ae3b42430_destroyer_wannacry.exe	28
PID 1936 wrote to memory of 3068	1936	2024-02-10_7051dcbe9a0837a312b09a5ae3b42430_destroyer_wannacry.exe	28
PID 3068 wrote to memory of 2124	3068	svchost.exe	30
PID 3068 wrote to memory of 2124	3068	svchost.exe	30
PID 3068 wrote to memory of 2124	3068	svchost.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-02-10_7051dcbe9a0837a312b09a5ae3b42430_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-10_7051dcbe9a0837a312b09a5ae3b42430_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1936
- 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:3068
- - 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:2124

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

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

Replay Monitor

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Downloads

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

Filesize
84KB

MD5
7051dcbe9a0837a312b09a5ae3b42430

SHA1
3553ff8725a57929e438228bf141b695c13cecb4

SHA256
ce750c7054359e9e88556d48f7eea341374b74f494caed48251185b54c9ed644

SHA512
2e82160bff1fbdd6f6a9f0210dfaf831650fdefdf8e3bb70c3c2717122b107ef3610c5c5f55908843df7ba3bd3bbefc40b9d1dda07877083cbd2ab8b090a276c

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

Filesize
140B

MD5
ee20a3aaf13c2d8805ede471f1f3ed3c

SHA1
bac14bc149af77885de0f6997fe3f3bf3f9686ad

SHA256
b9afbd14a42e996a8de6eba45b8a6df17a958f1b269913eab89484f62d373919

SHA512
8dea66d1bb1ee359b61fa32e3a45a1d66cf8987fdbec4218ef258b58aaaf9475e77bff2d40f9f28f4a75f321de6f86de6f42ab3cd7afee4e213ffbe3ae03f714

Download Submit
memory/1936-0-0x0000000000AB0000-0x0000000000ACC000-memory.dmp

Filesize
112KB

Download
memory/1936-1-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download
memory/1936-8-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download
memory/3068-7-0x0000000000360000-0x000000000037C000-memory.dmp

Filesize
112KB

Download
memory/3068-9-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download
memory/3068-11-0x000000001AE00000-0x000000001AE80000-memory.dmp

Filesize
512KB

Download
memory/3068-463-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download
memory/3068-464-0x000000001AE00000-0x000000001AE80000-memory.dmp

Filesize
512KB

Download