chaos | a73988ddd7012dbea460e6afe763dfc87fa788784301db187b6bc832a1b90b3e

Analysis

max time kernel
122s
max time network
125s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
28/05/2024, 23:24

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General

Target

2024-05-28_3d92a5ba0510fa666565200a3d7f8c4f_destroyer_wannacry.exe
Size

37KB
MD5

3d92a5ba0510fa666565200a3d7f8c4f
SHA1

a1003312ef89abe43028f4c466e3017a461fe7eb
SHA256

a73988ddd7012dbea460e6afe763dfc87fa788784301db187b6bc832a1b90b3e
SHA512

b79b58048f019bcfee19c36d3368deba30d8088f22b107bd69f107e8647fc6db1a7174cfdb4c6cd4f16c2dee1a0c879ba8b7b675dfcd97afbb38276c17053787
SSDEEP

768:3qo2ZK/hpktD8Hr92rda445lTtG/lpuBYXf3oZQEqj3mIgTeM:6o2Ze8D8Hr96da445xYlwBYgqEq7mqM

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/1860-1-0x00000000001A0000-0x00000000001B0000-memory.dmp	family_chaos
behavioral1/files/0x000700000001211e-5.dat	family_chaos
behavioral1/memory/2548-7-0x0000000000DE0000-0x0000000000DF0000-memory.dmp	family_chaos

Detects command variations typically used by ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/1860-1-0x00000000001A0000-0x00000000001B0000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/files/0x000700000001211e-5.dat	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/memory/2548-7-0x0000000000DE0000-0x0000000000DF0000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware

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
2548	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\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\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\Searches\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\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\Accessories\System Tools\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\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\Public\Music\Sample Music\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\Downloads\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Saved Games\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\Documents\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\Maintenance\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\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\Libraries\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\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\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\Accessories\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-481678230-3773327859-3495911762-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\Sample Videos\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-1-5-21-481678230-3773327859-3495911762-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\lprzoe0bm.jpg"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000\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
2376	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2548	svchost.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1860	2024-05-28_3d92a5ba0510fa666565200a3d7f8c4f_destroyer_wannacry.exe
1860	2024-05-28_3d92a5ba0510fa666565200a3d7f8c4f_destroyer_wannacry.exe
2548	svchost.exe
2548	svchost.exe
2548	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1860	2024-05-28_3d92a5ba0510fa666565200a3d7f8c4f_destroyer_wannacry.exe
Token: SeDebugPrivilege	2548	svchost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1860 wrote to memory of 2548	1860	2024-05-28_3d92a5ba0510fa666565200a3d7f8c4f_destroyer_wannacry.exe	28
PID 1860 wrote to memory of 2548	1860	2024-05-28_3d92a5ba0510fa666565200a3d7f8c4f_destroyer_wannacry.exe	28
PID 1860 wrote to memory of 2548	1860	2024-05-28_3d92a5ba0510fa666565200a3d7f8c4f_destroyer_wannacry.exe	28
PID 2548 wrote to memory of 2376	2548	svchost.exe	30
PID 2548 wrote to memory of 2376	2548	svchost.exe	30
PID 2548 wrote to memory of 2376	2548	svchost.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-05-28_3d92a5ba0510fa666565200a3d7f8c4f_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-28_3d92a5ba0510fa666565200a3d7f8c4f_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1860
- 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:2548
- - 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:2376

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
37KB

MD5
3d92a5ba0510fa666565200a3d7f8c4f

SHA1
a1003312ef89abe43028f4c466e3017a461fe7eb

SHA256
a73988ddd7012dbea460e6afe763dfc87fa788784301db187b6bc832a1b90b3e

SHA512
b79b58048f019bcfee19c36d3368deba30d8088f22b107bd69f107e8647fc6db1a7174cfdb4c6cd4f16c2dee1a0c879ba8b7b675dfcd97afbb38276c17053787

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

Filesize
55B

MD5
9e386839f70884f23dcd6136d874936c

SHA1
d826c660bee396d0f57de94ec64b1987410a430a

SHA256
94b9c14b329bb25f9b3a334434de85668f8e520fa4d2955be6d534ee7c7d05f0

SHA512
c907b78f4ee4b07f7e712913e160cdd6b2da6dc63666cc12a416b85a67df194f1b9f20253edc88701f36d9198db34e4c25fb74369666e3fa532de3e92cf5668f

Download Submit
memory/1860-0-0x000007FEF60C3000-0x000007FEF60C4000-memory.dmp

Filesize
4KB

Download
memory/1860-1-0x00000000001A0000-0x00000000001B0000-memory.dmp

Filesize
64KB

Download
memory/2548-7-0x0000000000DE0000-0x0000000000DF0000-memory.dmp

Filesize
64KB

Download
memory/2548-17-0x000007FEF60C0000-0x000007FEF6AAC000-memory.dmp

Filesize
9.9MB

Download
memory/2548-20-0x000007FEF60C0000-0x000007FEF6AAC000-memory.dmp

Filesize
9.9MB

Download
memory/2548-419-0x000007FEF60C0000-0x000007FEF6AAC000-memory.dmp

Filesize
9.9MB

Download