chaos | 9578898ead6b426f3385939c924f75440a408c88a646f2a49d25958da77355ef

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
26/05/2024, 21:25

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General

Target

2024-05-26_6de41e01f15b13212c5f63bcdbc220c0_chaos_destroyer_wannacry.exe
Size

21KB
MD5

6de41e01f15b13212c5f63bcdbc220c0
SHA1

d4ac37f869e034a76b66dcdb0fdb8a3aa5f9edcb
SHA256

9578898ead6b426f3385939c924f75440a408c88a646f2a49d25958da77355ef
SHA512

42a256699e8baedb80dc6a7675b88aa85df634b1f3b6e5344a1680a1f99bdbe1cc591aa2d04d6c5f5a77612dc50cf0474f337b8f5be7f6fdb58de3944c3b618b
SSDEEP

384:RYenjLLADQDzCzk6KT6V29nOVp91tbeIbRxDG6:gc16Q9nc9bbeIbRxD9

Score

10^/10

chaos defense_evasion evasion execution impact ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\nfhvy4wu.default-release\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/1636-1-0x0000000000A00000-0x0000000000A0C000-memory.dmp	family_chaos
behavioral1/files/0x000d00000001227e-4.dat	family_chaos
behavioral1/memory/2612-7-0x00000000003F0000-0x00000000003FC000-memory.dmp	family_chaos

Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware defense_evasion impact execution

File Deletion
T1070.004

Inhibit System Recovery
T1490

Windows Management Instrumentation
T1047

Detects command variations typically used by ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/1636-1-0x0000000000A00000-0x0000000000A0C000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/files/0x000d00000001227e-4.dat	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/memory/2612-7-0x00000000003F0000-0x00000000003FC000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
2456	bcdedit.exe
1444	bcdedit.exe

Deletes backup catalog 3 TTPs 1 IoCs

Uses wbadmin.exe to inhibit system recovery.

ransomware

Command and Scripting Interpreter

T1059

File Deletion

T1070.004

Inhibit System Recovery

T1490

pid	Process
1728	wbadmin.exe

Disables Task Manager via registry modification
evasion

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
2612	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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Interacts with shadow copies 2 TTPs 1 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

pid	Process
2780	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1836	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2612	svchost.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1636	2024-05-26_6de41e01f15b13212c5f63bcdbc220c0_chaos_destroyer_wannacry.exe
1636	2024-05-26_6de41e01f15b13212c5f63bcdbc220c0_chaos_destroyer_wannacry.exe
2612	svchost.exe
2612	svchost.exe
2612	svchost.exe
2612	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	1636	2024-05-26_6de41e01f15b13212c5f63bcdbc220c0_chaos_destroyer_wannacry.exe
Token: SeDebugPrivilege	2612	svchost.exe
Token: SeBackupPrivilege	2572	vssvc.exe
Token: SeRestorePrivilege	2572	vssvc.exe
Token: SeAuditPrivilege	2572	vssvc.exe
Token: SeIncreaseQuotaPrivilege	2156	WMIC.exe
Token: SeSecurityPrivilege	2156	WMIC.exe
Token: SeTakeOwnershipPrivilege	2156	WMIC.exe
Token: SeLoadDriverPrivilege	2156	WMIC.exe
Token: SeSystemProfilePrivilege	2156	WMIC.exe
Token: SeSystemtimePrivilege	2156	WMIC.exe
Token: SeProfSingleProcessPrivilege	2156	WMIC.exe
Token: SeIncBasePriorityPrivilege	2156	WMIC.exe
Token: SeCreatePagefilePrivilege	2156	WMIC.exe
Token: SeBackupPrivilege	2156	WMIC.exe
Token: SeRestorePrivilege	2156	WMIC.exe
Token: SeShutdownPrivilege	2156	WMIC.exe
Token: SeDebugPrivilege	2156	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2156	WMIC.exe
Token: SeRemoteShutdownPrivilege	2156	WMIC.exe
Token: SeUndockPrivilege	2156	WMIC.exe
Token: SeManageVolumePrivilege	2156	WMIC.exe
Token: 33	2156	WMIC.exe
Token: 34	2156	WMIC.exe
Token: 35	2156	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2156	WMIC.exe
Token: SeSecurityPrivilege	2156	WMIC.exe
Token: SeTakeOwnershipPrivilege	2156	WMIC.exe
Token: SeLoadDriverPrivilege	2156	WMIC.exe
Token: SeSystemProfilePrivilege	2156	WMIC.exe
Token: SeSystemtimePrivilege	2156	WMIC.exe
Token: SeProfSingleProcessPrivilege	2156	WMIC.exe
Token: SeIncBasePriorityPrivilege	2156	WMIC.exe
Token: SeCreatePagefilePrivilege	2156	WMIC.exe
Token: SeBackupPrivilege	2156	WMIC.exe
Token: SeRestorePrivilege	2156	WMIC.exe
Token: SeShutdownPrivilege	2156	WMIC.exe
Token: SeDebugPrivilege	2156	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2156	WMIC.exe
Token: SeRemoteShutdownPrivilege	2156	WMIC.exe
Token: SeUndockPrivilege	2156	WMIC.exe
Token: SeManageVolumePrivilege	2156	WMIC.exe
Token: 33	2156	WMIC.exe
Token: 34	2156	WMIC.exe
Token: 35	2156	WMIC.exe
Token: SeBackupPrivilege	800	wbengine.exe
Token: SeRestorePrivilege	800	wbengine.exe
Token: SeSecurityPrivilege	800	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1636 wrote to memory of 2612	1636	2024-05-26_6de41e01f15b13212c5f63bcdbc220c0_chaos_destroyer_wannacry.exe	28
PID 1636 wrote to memory of 2612	1636	2024-05-26_6de41e01f15b13212c5f63bcdbc220c0_chaos_destroyer_wannacry.exe	28
PID 1636 wrote to memory of 2612	1636	2024-05-26_6de41e01f15b13212c5f63bcdbc220c0_chaos_destroyer_wannacry.exe	28
PID 2612 wrote to memory of 2624	2612	svchost.exe	29
PID 2612 wrote to memory of 2624	2612	svchost.exe	29
PID 2612 wrote to memory of 2624	2612	svchost.exe	29
PID 2624 wrote to memory of 2780	2624	cmd.exe	31
PID 2624 wrote to memory of 2780	2624	cmd.exe	31
PID 2624 wrote to memory of 2780	2624	cmd.exe	31
PID 2624 wrote to memory of 2156	2624	cmd.exe	34
PID 2624 wrote to memory of 2156	2624	cmd.exe	34
PID 2624 wrote to memory of 2156	2624	cmd.exe	34
PID 2612 wrote to memory of 864	2612	svchost.exe	36
PID 2612 wrote to memory of 864	2612	svchost.exe	36
PID 2612 wrote to memory of 864	2612	svchost.exe	36
PID 864 wrote to memory of 2456	864	cmd.exe	38
PID 864 wrote to memory of 2456	864	cmd.exe	38
PID 864 wrote to memory of 2456	864	cmd.exe	38
PID 864 wrote to memory of 1444	864	cmd.exe	39
PID 864 wrote to memory of 1444	864	cmd.exe	39
PID 864 wrote to memory of 1444	864	cmd.exe	39
PID 2612 wrote to memory of 2656	2612	svchost.exe	40
PID 2612 wrote to memory of 2656	2612	svchost.exe	40
PID 2612 wrote to memory of 2656	2612	svchost.exe	40
PID 2656 wrote to memory of 1728	2656	cmd.exe	42
PID 2656 wrote to memory of 1728	2656	cmd.exe	42
PID 2656 wrote to memory of 1728	2656	cmd.exe	42
PID 2612 wrote to memory of 1836	2612	svchost.exe	46
PID 2612 wrote to memory of 1836	2612	svchost.exe	46
PID 2612 wrote to memory of 1836	2612	svchost.exe	46

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\2024-05-26_6de41e01f15b13212c5f63bcdbc220c0_chaos_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-26_6de41e01f15b13212c5f63bcdbc220c0_chaos_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1636
- C:\Users\Admin\AppData\Roaming\svchost.exe
  "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2612
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2624
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2780
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2156
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:864
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2456
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1444
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2656
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:1728
- - 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:1836

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2572

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:800

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:1188

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:2380

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Management Instrumentation

T1047

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

T1070

File Deletion

T1070.004

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\nfhvy4wu.default-release\read_it.txt

Filesize
964B

MD5
4217b8b83ce3c3f70029a056546f8fd0

SHA1
487cdb5733d073a0427418888e8f7070fe782a03

SHA256
7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121

SHA512
2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740

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

Filesize
21KB

MD5
6de41e01f15b13212c5f63bcdbc220c0

SHA1
d4ac37f869e034a76b66dcdb0fdb8a3aa5f9edcb

SHA256
9578898ead6b426f3385939c924f75440a408c88a646f2a49d25958da77355ef

SHA512
42a256699e8baedb80dc6a7675b88aa85df634b1f3b6e5344a1680a1f99bdbe1cc591aa2d04d6c5f5a77612dc50cf0474f337b8f5be7f6fdb58de3944c3b618b

Download Submit
C:\Users\Admin\Desktop\BlockStep.txt

Filesize
1B

MD5
d1457b72c3fb323a2671125aef3eab5d

SHA1
5bab61eb53176449e25c2c82f172b82cb13ffb9d

SHA256
8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1

SHA512
ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0

Download Submit
memory/1636-0-0x000007FEF55F3000-0x000007FEF55F4000-memory.dmp

Filesize
4KB

Download
memory/1636-1-0x0000000000A00000-0x0000000000A0C000-memory.dmp

Filesize
48KB

Download
memory/2612-7-0x00000000003F0000-0x00000000003FC000-memory.dmp

Filesize
48KB

Download
memory/2612-8-0x000007FEF55F0000-0x000007FEF5FDC000-memory.dmp

Filesize
9.9MB

Download
memory/2612-13-0x000007FEF55F0000-0x000007FEF5FDC000-memory.dmp

Filesize
9.9MB

Download
memory/2612-49-0x000007FEF55F0000-0x000007FEF5FDC000-memory.dmp

Filesize
9.9MB

Download