chaos | d9773300b2b43d9c2091b02744e472df1fb1e0ab920d0f71eea30647fd2a819b

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
12/05/2024, 03:29

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-12_0fb4787dcc4bcb1f6f78a70e792fbc86_wannacry.exe
Size

100KB
MD5

0fb4787dcc4bcb1f6f78a70e792fbc86
SHA1

e89c85f8495282ff03e91acab0ce8ebcba8d3299
SHA256

d9773300b2b43d9c2091b02744e472df1fb1e0ab920d0f71eea30647fd2a819b
SHA512

d530433119c8ee0117280cbdd9e88d374351ceb887f7e4b0e1481a3c08d27930075f3ca1c87d8b3f43da46adcbcc8a3d8ed3741456a6669b62414a670b58dbd2
SSDEEP

3072:ioVUMbr91bmrmNi0XJdsh55gvms+sUnFhKoAvog:nr91Tf5aQv1+YP

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/2888-1-0x00000000002B0000-0x00000000002D0000-memory.dmp	family_chaos
behavioral1/files/0x00090000000149f5-4.dat	family_chaos
behavioral1/memory/2948-7-0x0000000000E00000-0x0000000000E20000-memory.dmp	family_chaos

Detects command variations typically used by ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/2888-1-0x00000000002B0000-0x00000000002D0000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/files/0x00090000000149f5-4.dat	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/memory/2948-7-0x0000000000E00000-0x0000000000E20000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware

Drops startup file 3 IoCs

description	ioc	Process
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
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
2948	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	F:\$RECYCLE.BIN\S-1-5-21-3627615824-4061627003-3019543961-1000\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\Administrative 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\Music\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\Public\Pictures\Sample Pictures\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\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\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\Start Menu\Programs\Accessories\Accessibility\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\Accessories\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\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\Windows\Recent\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\Accessories\System Tools\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\Sample Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	svchost.exe
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\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links\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\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\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-1-5-21-3627615824-4061627003-3019543961-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ojq6r5pri.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
2548	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2948	svchost.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2888	2024-05-12_0fb4787dcc4bcb1f6f78a70e792fbc86_wannacry.exe
2888	2024-05-12_0fb4787dcc4bcb1f6f78a70e792fbc86_wannacry.exe
2948	svchost.exe
2948	svchost.exe
2948	svchost.exe
2948	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2888	2024-05-12_0fb4787dcc4bcb1f6f78a70e792fbc86_wannacry.exe
Token: SeDebugPrivilege	2948	svchost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2888 wrote to memory of 2948	2888	2024-05-12_0fb4787dcc4bcb1f6f78a70e792fbc86_wannacry.exe	28
PID 2888 wrote to memory of 2948	2888	2024-05-12_0fb4787dcc4bcb1f6f78a70e792fbc86_wannacry.exe	28
PID 2888 wrote to memory of 2948	2888	2024-05-12_0fb4787dcc4bcb1f6f78a70e792fbc86_wannacry.exe	28
PID 2948 wrote to memory of 2548	2948	svchost.exe	30
PID 2948 wrote to memory of 2548	2948	svchost.exe	30
PID 2948 wrote to memory of 2548	2948	svchost.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-05-12_0fb4787dcc4bcb1f6f78a70e792fbc86_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-12_0fb4787dcc4bcb1f6f78a70e792fbc86_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2888
- 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:2948
- - 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:2548

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

Loading Replay Monitor...

Downloads

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

Filesize
100KB

MD5
0fb4787dcc4bcb1f6f78a70e792fbc86

SHA1
e89c85f8495282ff03e91acab0ce8ebcba8d3299

SHA256
d9773300b2b43d9c2091b02744e472df1fb1e0ab920d0f71eea30647fd2a819b

SHA512
d530433119c8ee0117280cbdd9e88d374351ceb887f7e4b0e1481a3c08d27930075f3ca1c87d8b3f43da46adcbcc8a3d8ed3741456a6669b62414a670b58dbd2

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

Filesize
19B

MD5
91e642f2ab626c3780c0b251eae5f7b8

SHA1
f03b96a9cb9ea2646c3bf3a13a3de5e272675c80

SHA256
41f25a9ca2b5f87189f0073199c79285d20ca1fb43b48c44f054027ecffa6e90

SHA512
a83781fb7168049c04cc6c10497d7c20b668a39752e9b0f2f5120d514189892cf79d9b17979f373351eefa1f6a99d74e9088bae5e54a717eb39aac1c2d539ce5

Download Submit
memory/2888-0-0x000007FEF5F13000-0x000007FEF5F14000-memory.dmp

Filesize
4KB

Download
memory/2888-1-0x00000000002B0000-0x00000000002D0000-memory.dmp

Filesize
128KB

Download
memory/2948-7-0x0000000000E00000-0x0000000000E20000-memory.dmp

Filesize
128KB

Download
memory/2948-12-0x000007FEF5F10000-0x000007FEF68FC000-memory.dmp

Filesize
9.9MB

Download
memory/2948-18-0x000007FEF5F10000-0x000007FEF68FC000-memory.dmp

Filesize
9.9MB

Download
memory/2948-430-0x000007FEF5F10000-0x000007FEF68FC000-memory.dmp

Filesize
9.9MB

Download