chaos | d8165252f798066d1d08a2265a07324611cba08f163c5810ea5c84c25ae914a1

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
01/06/2024, 22:44

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General

Target

2024-06-01_c90a4499699ec433aca47efd8f442b7e_destroyer_wannacry.exe
Size

88KB
MD5

c90a4499699ec433aca47efd8f442b7e
SHA1

526fa785605031ccc1f6c7e1b15c61bc63a23f1b
SHA256

d8165252f798066d1d08a2265a07324611cba08f163c5810ea5c84c25ae914a1
SHA512

a2051d5442672347039c7bdcef35d430dd7d7266b05e1163ea270aeac0aab139840cb5eaf3f21fa180baede19a775c7b76bb867e1a8e87d6b4ffa61b15b69b37
SSDEEP

1536:Do2hGMBAr92VmK4lkRyYm4jR0irfNe+NaEK/4UIsawfhlcolZ2zxhUYQu:DoYGMBAr92Vm9lkjm4VL7pgfayoO0zE8

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/2024-1-0x0000000001350000-0x000000000136C000-memory.dmp	family_chaos
behavioral1/files/0x000c00000001226d-5.dat	family_chaos
behavioral1/memory/2484-7-0x0000000000DC0000-0x0000000000DDC000-memory.dmp	family_chaos

Detects command variations typically used by ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/2024-1-0x0000000001350000-0x000000000136C000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/files/0x000c00000001226d-5.dat	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/memory/2484-7-0x0000000000DC0000-0x0000000000DDC000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware

Renames multiple (184) 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\READ_ME.txt	svchost.exe
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

Executes dropped EXE 1 IoCs

pid	Process
2484	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\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\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\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-3691908287-3775019229-3534252667-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	svchost.exe
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\AppData\Roaming\Microsoft\Windows\SendTo\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\Start Menu\Programs\Administrative Tools\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\Recent\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\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links\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	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\Accessories\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\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\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Music\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\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\Maintenance\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\Start Menu\Programs\Accessories\Accessibility\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	svchost.exe

Sets desktop wallpaper using registry 2 TTPs 2 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\2hqcb9p1h.jpg"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Pictures\\My Wallpaper.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
3020	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2484	svchost.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2024	2024-06-01_c90a4499699ec433aca47efd8f442b7e_destroyer_wannacry.exe
2024	2024-06-01_c90a4499699ec433aca47efd8f442b7e_destroyer_wannacry.exe
2484	svchost.exe
2484	svchost.exe
2484	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2024	2024-06-01_c90a4499699ec433aca47efd8f442b7e_destroyer_wannacry.exe
Token: SeDebugPrivilege	2484	svchost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2024 wrote to memory of 2484	2024	2024-06-01_c90a4499699ec433aca47efd8f442b7e_destroyer_wannacry.exe	28
PID 2024 wrote to memory of 2484	2024	2024-06-01_c90a4499699ec433aca47efd8f442b7e_destroyer_wannacry.exe	28
PID 2024 wrote to memory of 2484	2024	2024-06-01_c90a4499699ec433aca47efd8f442b7e_destroyer_wannacry.exe	28
PID 2484 wrote to memory of 3020	2484	svchost.exe	30
PID 2484 wrote to memory of 3020	2484	svchost.exe	30
PID 2484 wrote to memory of 3020	2484	svchost.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-06-01_c90a4499699ec433aca47efd8f442b7e_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-01_c90a4499699ec433aca47efd8f442b7e_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2024
- 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:2484
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\READ_ME.txt
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:3020

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

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Downloads

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

Filesize
88KB

MD5
c90a4499699ec433aca47efd8f442b7e

SHA1
526fa785605031ccc1f6c7e1b15c61bc63a23f1b

SHA256
d8165252f798066d1d08a2265a07324611cba08f163c5810ea5c84c25ae914a1

SHA512
a2051d5442672347039c7bdcef35d430dd7d7266b05e1163ea270aeac0aab139840cb5eaf3f21fa180baede19a775c7b76bb867e1a8e87d6b4ffa61b15b69b37

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

Filesize
64B

MD5
01fd2da27c0454230b52bde8af39350f

SHA1
a0eee316a646423dc0f960d8599e7090d99570ae

SHA256
9e04f140b43ab81fa4467a339b09c06dd336913b861fb4e8dae1cf280acf3152

SHA512
5349e1f08898915dad1ed2cb7a141e2efda7bd43ca8070280354c509310b6bea5a92f137c7a3618d087ebdd03c8f28b8a8b190c500174f443560ae6b1d1ff101

Download Submit
memory/2024-0-0x000007FEF56B3000-0x000007FEF56B4000-memory.dmp

Filesize
4KB

Download
memory/2024-1-0x0000000001350000-0x000000000136C000-memory.dmp

Filesize
112KB

Download
memory/2484-7-0x0000000000DC0000-0x0000000000DDC000-memory.dmp

Filesize
112KB

Download
memory/2484-9-0x000007FEF56B0000-0x000007FEF609C000-memory.dmp

Filesize
9.9MB

Download
memory/2484-10-0x000007FEF56B0000-0x000007FEF609C000-memory.dmp

Filesize
9.9MB

Download
memory/2484-431-0x000007FEF56B0000-0x000007FEF609C000-memory.dmp

Filesize
9.9MB

Download