chaos | 4f3c2e4fc7b10e68fabf7e4a15b02f28fe27ee84fa3843ceafacc7084da79434

Analysis

max time kernel
121s
max time network
123s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
22-08-2024 20:48

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General

Target

20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
Size

738KB
MD5

c3401fc4603ce678596ae40f8bb194e9
SHA1

7786d4c9d942f9d3f78f873e7a9602701297853b
SHA256

4f3c2e4fc7b10e68fabf7e4a15b02f28fe27ee84fa3843ceafacc7084da79434
SHA512

ae9430dec06833f1a9a672c319ae9899fbc2546b03305acd66c3b1c4de246f67fb11552c6d3e9b6cb1ada67ef41aabd8490459a2872a02d48222436f449ade0c
SSDEEP

6144:P5dkccXS5yMJncAlhkQiaBhoIudR38ZJJchBRsZVCw+r9oMQzEua:PkccXS5yMxcAlDVBhotR+2bd2yF

Score

10^/10

chaos evasion ransomware

Malware Config

Extracted

Path

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

Family

chaos

Ransom Note

----> Chaos is multi language ransomware. Translate your note to any language <---- All of your files have been encrypted Your computer was infected with a ransomware virus. Your files have been encrypted and you won't be able to decrypt them without our help.What can I do to get my files back?You can buy our special decryption software, this software will allow you to recover all of your data and remove the ransomware from your computer.The price for the software is $1,500. Payment can be made in Bitcoin only. How do I pay, where do I get Bitcoin? Purchasing Bitcoin varies from country to country, you are best advised to do a quick google search yourself to find out how to buy Bitcoin. Many of our customers have reported these sites to be fast and reliable: Coinmama - hxxps://www.coinmama.com Bitpanda - hxxps://www.bitpanda.com Payment informationAmount: 0.1473766 BTC Bitcoin Address: bc1qlnzcep4l4ac0ttdrq7awxev9ehu465f2vpt9x0

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/2368-1-0x0000000001320000-0x00000000013DE000-memory.dmp	family_chaos
behavioral1/memory/2468-13-0x0000000001100000-0x00000000011BE000-memory.dmp	family_chaos
behavioral1/files/0x000800000001921d-12.dat	family_chaos

Looks for VirtualBox Guest Additions in registry 2 TTPs 2 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions	svchost.exe

Looks for VMWare Tools registry key 2 TTPs 2 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\VMware, Inc.\VMware Tools	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\VMware, Inc.\VMware Tools	svchost.exe

Checks BIOS information in registry 2 TTPs 4 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	svchost.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2468	svchost.exe

Loads dropped DLL 2 IoCs

pid	Process
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2468	svchost.exe

Drops desktop.ini file(s) 5 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\Contacts\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-3551809350-4263495960-1443967649-1000\desktop.ini	svchost.exe

Maps connected drives based on registry 3 TTPs 4 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	svchost.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	svchost.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
Token: SeDebugPrivilege	2468	svchost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2368 wrote to memory of 2468	2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe	31
PID 2368 wrote to memory of 2468	2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe	31
PID 2368 wrote to memory of 2468	2368	20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe	31
PID 2468 wrote to memory of 2964	2468	svchost.exe	33
PID 2468 wrote to memory of 2964	2468	svchost.exe	33
PID 2468 wrote to memory of 2964	2468	svchost.exe	33

C:\Users\Admin\AppData\Local\Temp\20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\20240822c3401fc4603ce678596ae40f8bb194e9wannacry.exe"
1⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Loads dropped DLL
- Maps connected drives based on registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2368
- C:\Users\Admin\AppData\Roaming\svchost.exe
  "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Looks for VirtualBox Guest Additions in registry
  - Looks for VMWare Tools registry key
  - Checks BIOS information in registry
  - Drops startup file
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops desktop.ini file(s)
  - Maps connected drives based on registry
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2468
- - C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -u -p 2468 -s 796
    3⤵
    PID:2964

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
738KB

MD5
c3401fc4603ce678596ae40f8bb194e9

SHA1
7786d4c9d942f9d3f78f873e7a9602701297853b

SHA256
4f3c2e4fc7b10e68fabf7e4a15b02f28fe27ee84fa3843ceafacc7084da79434

SHA512
ae9430dec06833f1a9a672c319ae9899fbc2546b03305acd66c3b1c4de246f67fb11552c6d3e9b6cb1ada67ef41aabd8490459a2872a02d48222436f449ade0c

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

Filesize
964B

MD5
4217b8b83ce3c3f70029a056546f8fd0

SHA1
487cdb5733d073a0427418888e8f7070fe782a03

SHA256
7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121

SHA512
2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740

Download Submit
\Users\Admin\AppData\Local\Temp\Runtime.MSIL.1.0.0.0\sByte.dll

Filesize
39KB

MD5
d80d1b6d9a6d5986fa47f6f8487030e1

SHA1
8f5773bf9eca43b079c1766b2e9f44cc90bd9215

SHA256
446128f1712da8064d0197376184315cb529ed26ed9122f7b171bb208e22c0c3

SHA512
9fcf0105c2c9ee81c526d41633d93579bb8e2837989d77fb4a6523440415ec2d7fa46ac9ae4e55ecebd99126837817ac308cc079475de02667b21727a43d74cc

Download Submit
memory/2368-1-0x0000000001320000-0x00000000013DE000-memory.dmp

Filesize
760KB

Download
memory/2368-2-0x00000000003C0000-0x00000000003CC000-memory.dmp

Filesize
48KB

Download
memory/2368-3-0x000007FEF5F50000-0x000007FEF693C000-memory.dmp

Filesize
9.9MB

Download
memory/2368-7-0x0000000000560000-0x0000000000568000-memory.dmp

Filesize
32KB

Download
memory/2368-0-0x000007FEF5F53000-0x000007FEF5F54000-memory.dmp

Filesize
4KB

Download
memory/2368-130-0x000007FEF5F50000-0x000007FEF693C000-memory.dmp

Filesize
9.9MB

Download
memory/2468-13-0x0000000001100000-0x00000000011BE000-memory.dmp

Filesize
760KB

Download
memory/2468-17-0x000007FEF5F50000-0x000007FEF693C000-memory.dmp

Filesize
9.9MB

Download
memory/2468-16-0x000007FEF5F50000-0x000007FEF693C000-memory.dmp

Filesize
9.9MB

Download
memory/2468-131-0x000007FEF5F50000-0x000007FEF693C000-memory.dmp

Filesize
9.9MB

Download