chaos | 0545950ceb362f4f82da58a3c24825c26e188e210d345fbd127ad75b0f8dbcc9

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
08-09-2024 09:09

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General

Target

202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
Size

245KB
MD5

6b573d2e5879c3cb307b1e1fdb9087f4
SHA1

690d83a67319f6ff98690776e86dc0704b0d4a92
SHA256

0545950ceb362f4f82da58a3c24825c26e188e210d345fbd127ad75b0f8dbcc9
SHA512

674f061c61277f2b73a9d9b12ae83039ac3607c8bb0b043ac0ba9806eaef57508869e706bf9179258700dea6ae83ab87c64bac00441ab09df645a59720f71656
SSDEEP

6144:BAHLSHCsulgv6ZZJJchBRsZVOB45r9iTIbdiLEusp:SrSLNv652bbB428bgY1p

Score

10^/10

chaos evasion ransomware

Malware Config

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/2112-1-0x00000000000E0000-0x0000000000124000-memory.dmp	family_chaos
behavioral1/files/0x0009000000018669-12.dat	family_chaos
behavioral1/memory/2976-13-0x00000000008A0000-0x00000000008E4000-memory.dmp	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	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.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	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.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\SystemBiosVersion	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	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
2976	svchost.exe

Loads dropped DLL 2 IoCs

pid	Process
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2976	svchost.exe

Drops desktop.ini file(s) 1 IoCs

description	ioc	Process
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-4177215427-74451935-3209572229-1000\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	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.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

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
Token: SeDebugPrivilege	2976	svchost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2112 wrote to memory of 2976	2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe	32
PID 2112 wrote to memory of 2976	2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe	32
PID 2112 wrote to memory of 2976	2112	202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe	32
PID 2976 wrote to memory of 2884	2976	svchost.exe	33
PID 2976 wrote to memory of 2884	2976	svchost.exe	33
PID 2976 wrote to memory of 2884	2976	svchost.exe	33

C:\Users\Admin\AppData\Local\Temp\202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\202409086b573d2e5879c3cb307b1e1fdb9087f4wannacry.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:2112
- 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:2976
- - C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -u -p 2976 -s 768
    3⤵
    PID:2884

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
245KB

MD5
6b573d2e5879c3cb307b1e1fdb9087f4

SHA1
690d83a67319f6ff98690776e86dc0704b0d4a92

SHA256
0545950ceb362f4f82da58a3c24825c26e188e210d345fbd127ad75b0f8dbcc9

SHA512
674f061c61277f2b73a9d9b12ae83039ac3607c8bb0b043ac0ba9806eaef57508869e706bf9179258700dea6ae83ab87c64bac00441ab09df645a59720f71656

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/2112-0-0x000007FEF5FD3000-0x000007FEF5FD4000-memory.dmp

Filesize
4KB

Download
memory/2112-1-0x00000000000E0000-0x0000000000124000-memory.dmp

Filesize
272KB

Download
memory/2112-2-0x0000000000480000-0x000000000048C000-memory.dmp

Filesize
48KB

Download
memory/2112-3-0x000007FEF5FD0000-0x000007FEF69BC000-memory.dmp

Filesize
9.9MB

Download
memory/2112-7-0x00000000004A0000-0x00000000004A8000-memory.dmp

Filesize
32KB

Download
memory/2112-18-0x000007FEF5FD0000-0x000007FEF69BC000-memory.dmp

Filesize
9.9MB

Download
memory/2976-17-0x000007FEF5FD0000-0x000007FEF69BC000-memory.dmp

Filesize
9.9MB

Download
memory/2976-16-0x000007FEF5FD0000-0x000007FEF69BC000-memory.dmp

Filesize
9.9MB

Download
memory/2976-13-0x00000000008A0000-0x00000000008E4000-memory.dmp

Filesize
272KB

Download
memory/2976-20-0x000007FEF5FD0000-0x000007FEF69BC000-memory.dmp

Filesize
9.9MB

Download