chaos | 2a58499667712ca4e34cdf24cb2fa54828e76a254e780c3ac0fbb570f6148bf5

Analysis

max time kernel
44s
max time network
42s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
04-08-2024 15:11

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General

Target

Quantum.exe
Size

217KB
MD5

e7bd89cb405b3a1e0b34bea003b27ec5
SHA1

21061b3432c8e6a56f6b4e7b755d73f072f47f94
SHA256

2a58499667712ca4e34cdf24cb2fa54828e76a254e780c3ac0fbb570f6148bf5
SHA512

d0e592d846f0bc9a47f67036826079fe2ad4d777b52d5cd54bbfd0bf2f2834b54ea75e59ec34b2867aea51377cbd54f1186655d655f09c66ba2ec09407628231
SSDEEP

3072:6ob0Exr9jos+uorMvZprdSyI+gPTfqyYgytVx9T8AOtZCWcW7ubxvOGIx3sBsNkw:P7r9jJ5orwrRS8gPFYTdOjbGXypU5

Score

10^/10

chaos ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\Documents\wowie.txt

Ransom Note

Your files have been encrypted! All your important files have been encrypted. To regain access, you need to purchase a decryption key. Instructions: 1. Purchase $50 worth of Bitcoin at https://blockchain.com. 2. Email us at [email protected] 3. After we send you the wallet address and you give us the bitcoin, we will give you your decryption key. Important: You have 24 hours to do so. Failure to pay and decrypt your files, they are lost forever. Bonne chance!

Emails

[email protected]

URLs

https://blockchain.com

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/2624-1-0x0000000001030000-0x000000000106C000-memory.dmp	family_chaos
behavioral1/files/0x000f00000001227f-5.dat	family_chaos
behavioral1/memory/2180-7-0x0000000000830000-0x000000000086C000-memory.dmp	family_chaos

Drops startup file 3 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Quantum.url	Quantum.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini	Quantum.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wowie.txt	Quantum.exe

Executes dropped EXE 1 IoCs

pid	Process
2180	Quantum.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\Public\Documents\desktop.ini	Quantum.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	Quantum.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	Quantum.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini	Quantum.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	Quantum.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	Quantum.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-2958949473-3205530200-1453100116-1000\desktop.ini	Quantum.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	Quantum.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini	Quantum.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini	Quantum.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini	Quantum.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	Quantum.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	Quantum.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	Quantum.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini	Quantum.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini	Quantum.exe
File opened for modification	C:\Users\Admin\Saved Games\desktop.ini	Quantum.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini	Quantum.exe
File opened for modification	C:\Users\Admin\Favorites\Links for United States\desktop.ini	Quantum.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini	Quantum.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini	Quantum.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	Quantum.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	Quantum.exe
File opened for modification	C:\Users\Public\Music\Sample Music\desktop.ini	Quantum.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	Quantum.exe
File opened for modification	C:\Users\Public\Videos\Sample Videos\desktop.ini	Quantum.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	Quantum.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	Quantum.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini	Quantum.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	Quantum.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	Quantum.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	Quantum.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	Quantum.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	Quantum.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-1-5-21-2958949473-3205530200-1453100116-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\u5buzsv3w.jpg"	Quantum.exe

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

System Information Discovery
T1082

Modifies registry class 12 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\99y0_auto_file\shell\open\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\99y0_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\99y0_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\.99y0	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\99y0_auto_file\shell\edit\command\ = "%SystemRoot%\\system32\\NOTEPAD.EXE %1"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\99y0_auto_file\shell\edit\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\99y0_auto_file\shell\open	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\99y0_auto_file\shell\open\command\ = "%SystemRoot%\\system32\\NOTEPAD.EXE %1"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\.99y0\ = "99y0_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\99y0_auto_file\shell\edit	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\99y0_auto_file\shell	rundll32.exe

Opens file in notepad (likely ransom note) 2 IoCs

ransomware

pid	Process
2840	NOTEPAD.EXE
848	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2180	Quantum.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2624	Quantum.exe
2624	Quantum.exe
2624	Quantum.exe
2180	Quantum.exe
2180	Quantum.exe
2180	Quantum.exe
2180	Quantum.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1792	rundll32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2624	Quantum.exe
Token: SeDebugPrivilege	2180	Quantum.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2840	NOTEPAD.EXE

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2624 wrote to memory of 2180	2624	Quantum.exe	31
PID 2624 wrote to memory of 2180	2624	Quantum.exe	31
PID 2624 wrote to memory of 2180	2624	Quantum.exe	31
PID 2180 wrote to memory of 2840	2180	Quantum.exe	33
PID 2180 wrote to memory of 2840	2180	Quantum.exe	33
PID 2180 wrote to memory of 2840	2180	Quantum.exe	33
PID 1792 wrote to memory of 848	1792	rundll32.exe	35
PID 1792 wrote to memory of 848	1792	rundll32.exe	35
PID 1792 wrote to memory of 848	1792	rundll32.exe	35

C:\Users\Admin\AppData\Local\Temp\Quantum.exe
"C:\Users\Admin\AppData\Local\Temp\Quantum.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2624
- C:\Users\Admin\AppData\Roaming\Quantum.exe
  "C:\Users\Admin\AppData\Roaming\Quantum.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:2180
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\wowie.txt
    3⤵
    - Opens file in notepad (likely ransom note)
    - Suspicious use of FindShellTrayWindow
    PID:2840

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\Desktop\SubmitSwitch.xlsx.99y0
1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:1792
- C:\Windows\system32\NOTEPAD.EXE
  "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\SubmitSwitch.xlsx.99y0
  2⤵
  - Opens file in notepad (likely ransom note)
  PID:848

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\Quantum.exe

Filesize
217KB

MD5
e7bd89cb405b3a1e0b34bea003b27ec5

SHA1
21061b3432c8e6a56f6b4e7b755d73f072f47f94

SHA256
2a58499667712ca4e34cdf24cb2fa54828e76a254e780c3ac0fbb570f6148bf5

SHA512
d0e592d846f0bc9a47f67036826079fe2ad4d777b52d5cd54bbfd0bf2f2834b54ea75e59ec34b2867aea51377cbd54f1186655d655f09c66ba2ec09407628231

Download Submit
C:\Users\Admin\Desktop\SubmitSwitch.xlsx.99y0

Filesize
21KB

MD5
c9ca59d2d0cf67d18212a8817c5c3ed3

SHA1
f515e2bfdbcf7b92e451fca4eddaed33d5ccb977

SHA256
bb6a5b6f3ebe42b4f6ecad20dbb8a6cd01c6033049a0bfdb3061a1b625a856fe

SHA512
de9571690a9fb10492282fc2b4c54b34058f65368c7531a51c6d59777e3fae6faa070e9deaf70c3ed1a152c05eb4468580d3838eda6fe28d6bb3e0c7d62eb278

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

Filesize
483B

MD5
e189fe383205d84d08aaeedc75c49bdf

SHA1
dd9e0491edb190f292979b3c470667a2cb32d9cf

SHA256
fc6befab05853de97d15e5c143314ed1f1a7c6228f29c136959f04eba981786d

SHA512
37383d62295713ced88499b0bd5b828f30559d9bdfa51c2aeda77409eeb0af68de8447309d99829589518a7fb7e10b0271e5ac9a89f3a1f5cf1f7a2e15c39ea3

Download Submit
memory/2180-7-0x0000000000830000-0x000000000086C000-memory.dmp

Filesize
240KB

Download
memory/2180-9-0x000007FEF5920000-0x000007FEF630C000-memory.dmp

Filesize
9.9MB

Download
memory/2180-18-0x000007FEF5920000-0x000007FEF630C000-memory.dmp

Filesize
9.9MB

Download
memory/2180-501-0x000007FEF5920000-0x000007FEF630C000-memory.dmp

Filesize
9.9MB

Download
memory/2624-0-0x000007FEF5923000-0x000007FEF5924000-memory.dmp

Filesize
4KB

Download
memory/2624-1-0x0000000001030000-0x000000000106C000-memory.dmp

Filesize
240KB

Download