chaos | b69bb28aa423914139a3edcf9fdb617f3105d971e628c4cd82bbd62b9fc32b85

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
14/04/2024, 08:26

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General

Target

2024-04-14_042af9c511552255aed26954d500543c_chaos_destroyer_wannacry.exe
Size

23KB
MD5

042af9c511552255aed26954d500543c
SHA1

e478b331aec1166f16a714e2a4320fcb04d54b16
SHA256

b69bb28aa423914139a3edcf9fdb617f3105d971e628c4cd82bbd62b9fc32b85
SHA512

5729179cce14e135b9e9d79d1acf4e518f2eadff604e5094e9f1eaf9e8c2ef9a3ada18905c55143fe2bbeaf020f3cff3b7e7e9b0845475353fff286a0cefa664
SSDEEP

384:R3Mg/bqo2i5rMfpz0qjuwzUrJXmr91C221gYei:Tqo2Ir8pzRjKd2r9t2xei

Score

10^/10

chaos evasion ransomware spyware stealer

Malware Config

Extracted

Path

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

Ransom Note

[ Oops, Your files have been encrypted! ] WHAT HAPPENED TO MY COMPUTER? Your important files are encrypted. Many of your documents, photos, videos, databases and other files are no longer accessible because they have been encrypted. Maybe you are busy looking for a way to recover your files, but do not waste your time. Nobody can recover your files without our decryption key. The ransomware also spread in your Network or USB, You cannot kill or remove the ransomware You can recover your files unless you pay ₱2000 in our GCASH provider and after you send to the designated number with a receipt. You can send it to our email GCASH - https://ibb.co/RHs43WH Email - [email protected]

Emails

[email protected]

URLs

https://ibb.co/RHs43WH

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/2420-0-0x0000000000A80000-0x0000000000A8C000-memory.dmp	family_chaos
behavioral1/memory/3036-7-0x00000000003B0000-0x00000000003BC000-memory.dmp	family_chaos
behavioral1/files/0x000b000000012248-6.dat	family_chaos

Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1070.004

Inhibit System Recovery
T1490

Detects command variations typically used by ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/2420-0-0x0000000000A80000-0x0000000000A8C000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/memory/3036-7-0x00000000003B0000-0x00000000003BC000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/files/0x000b000000012248-6.dat	INDICATOR_SUSPICIOUS_GENRansomware

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
2644	bcdedit.exe
2780	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
1560	wbadmin.exe

Drops startup file 3 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
3036	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	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\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\Favorites\Links for United States\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\Start Menu\Programs\Maintenance\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\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\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Searches\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\Accessibility\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Music\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\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\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\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\Admin\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\Sample Videos\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\Programs\Accessories\Desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-2297530677-1229052932-2803917579-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\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\Windows\Libraries\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

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
556	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
700	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3036	svchost.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2420	2024-04-14_042af9c511552255aed26954d500543c_chaos_destroyer_wannacry.exe
2420	2024-04-14_042af9c511552255aed26954d500543c_chaos_destroyer_wannacry.exe
3036	svchost.exe
3036	svchost.exe
3036	svchost.exe
3036	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2420	2024-04-14_042af9c511552255aed26954d500543c_chaos_destroyer_wannacry.exe
Token: SeDebugPrivilege	3036	svchost.exe
Token: SeBackupPrivilege	1668	vssvc.exe
Token: SeRestorePrivilege	1668	vssvc.exe
Token: SeAuditPrivilege	1668	vssvc.exe
Token: SeIncreaseQuotaPrivilege	304	WMIC.exe
Token: SeSecurityPrivilege	304	WMIC.exe
Token: SeTakeOwnershipPrivilege	304	WMIC.exe
Token: SeLoadDriverPrivilege	304	WMIC.exe
Token: SeSystemProfilePrivilege	304	WMIC.exe
Token: SeSystemtimePrivilege	304	WMIC.exe
Token: SeProfSingleProcessPrivilege	304	WMIC.exe
Token: SeIncBasePriorityPrivilege	304	WMIC.exe
Token: SeCreatePagefilePrivilege	304	WMIC.exe
Token: SeBackupPrivilege	304	WMIC.exe
Token: SeRestorePrivilege	304	WMIC.exe
Token: SeShutdownPrivilege	304	WMIC.exe
Token: SeDebugPrivilege	304	WMIC.exe
Token: SeSystemEnvironmentPrivilege	304	WMIC.exe
Token: SeRemoteShutdownPrivilege	304	WMIC.exe
Token: SeUndockPrivilege	304	WMIC.exe
Token: SeManageVolumePrivilege	304	WMIC.exe
Token: 33	304	WMIC.exe
Token: 34	304	WMIC.exe
Token: 35	304	WMIC.exe
Token: SeIncreaseQuotaPrivilege	304	WMIC.exe
Token: SeSecurityPrivilege	304	WMIC.exe
Token: SeTakeOwnershipPrivilege	304	WMIC.exe
Token: SeLoadDriverPrivilege	304	WMIC.exe
Token: SeSystemProfilePrivilege	304	WMIC.exe
Token: SeSystemtimePrivilege	304	WMIC.exe
Token: SeProfSingleProcessPrivilege	304	WMIC.exe
Token: SeIncBasePriorityPrivilege	304	WMIC.exe
Token: SeCreatePagefilePrivilege	304	WMIC.exe
Token: SeBackupPrivilege	304	WMIC.exe
Token: SeRestorePrivilege	304	WMIC.exe
Token: SeShutdownPrivilege	304	WMIC.exe
Token: SeDebugPrivilege	304	WMIC.exe
Token: SeSystemEnvironmentPrivilege	304	WMIC.exe
Token: SeRemoteShutdownPrivilege	304	WMIC.exe
Token: SeUndockPrivilege	304	WMIC.exe
Token: SeManageVolumePrivilege	304	WMIC.exe
Token: 33	304	WMIC.exe
Token: 34	304	WMIC.exe
Token: 35	304	WMIC.exe
Token: SeBackupPrivilege	1772	wbengine.exe
Token: SeRestorePrivilege	1772	wbengine.exe
Token: SeSecurityPrivilege	1772	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2420 wrote to memory of 3036	2420	2024-04-14_042af9c511552255aed26954d500543c_chaos_destroyer_wannacry.exe	28
PID 2420 wrote to memory of 3036	2420	2024-04-14_042af9c511552255aed26954d500543c_chaos_destroyer_wannacry.exe	28
PID 2420 wrote to memory of 3036	2420	2024-04-14_042af9c511552255aed26954d500543c_chaos_destroyer_wannacry.exe	28
PID 3036 wrote to memory of 1628	3036	svchost.exe	30
PID 3036 wrote to memory of 1628	3036	svchost.exe	30
PID 3036 wrote to memory of 1628	3036	svchost.exe	30
PID 1628 wrote to memory of 556	1628	cmd.exe	32
PID 1628 wrote to memory of 556	1628	cmd.exe	32
PID 1628 wrote to memory of 556	1628	cmd.exe	32
PID 1628 wrote to memory of 304	1628	cmd.exe	35
PID 1628 wrote to memory of 304	1628	cmd.exe	35
PID 1628 wrote to memory of 304	1628	cmd.exe	35
PID 3036 wrote to memory of 2820	3036	svchost.exe	37
PID 3036 wrote to memory of 2820	3036	svchost.exe	37
PID 3036 wrote to memory of 2820	3036	svchost.exe	37
PID 2820 wrote to memory of 2644	2820	cmd.exe	39
PID 2820 wrote to memory of 2644	2820	cmd.exe	39
PID 2820 wrote to memory of 2644	2820	cmd.exe	39
PID 2820 wrote to memory of 2780	2820	cmd.exe	40
PID 2820 wrote to memory of 2780	2820	cmd.exe	40
PID 2820 wrote to memory of 2780	2820	cmd.exe	40
PID 3036 wrote to memory of 1860	3036	svchost.exe	41
PID 3036 wrote to memory of 1860	3036	svchost.exe	41
PID 3036 wrote to memory of 1860	3036	svchost.exe	41
PID 1860 wrote to memory of 1560	1860	cmd.exe	43
PID 1860 wrote to memory of 1560	1860	cmd.exe	43
PID 1860 wrote to memory of 1560	1860	cmd.exe	43
PID 3036 wrote to memory of 700	3036	svchost.exe	47
PID 3036 wrote to memory of 700	3036	svchost.exe	47
PID 3036 wrote to memory of 700	3036	svchost.exe	47

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\2024-04-14_042af9c511552255aed26954d500543c_chaos_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-14_042af9c511552255aed26954d500543c_chaos_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2420
- 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)
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3036
- - 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:1628
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:556
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:304
- - 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:2820
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2644
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2780
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1860
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:1560
- - 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:700

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1668

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1772

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:1228

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:2912

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

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\svchost.exe

Filesize
23KB

MD5
042af9c511552255aed26954d500543c

SHA1
e478b331aec1166f16a714e2a4320fcb04d54b16

SHA256
b69bb28aa423914139a3edcf9fdb617f3105d971e628c4cd82bbd62b9fc32b85

SHA512
5729179cce14e135b9e9d79d1acf4e518f2eadff604e5094e9f1eaf9e8c2ef9a3ada18905c55143fe2bbeaf020f3cff3b7e7e9b0845475353fff286a0cefa664

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

Filesize
714B

MD5
bab79cb4fc18b75555a407cfbbad1cfb

SHA1
884f8d416258fb32d8b54520df694a8b97e38baa

SHA256
4922845e5199862745ea771d9905a8ee45592391539eb7663e352d21ca7fc5bd

SHA512
2821935fd9a80d3253ec88b7f63ecedc1ae39c54ec081fa2e5ca673ad35ee2316336a995d9fb9dc52c5a07ee0afec98c9c04ee705c3cba7e73298d24f1e81cd9

Download Submit
memory/2420-0-0x0000000000A80000-0x0000000000A8C000-memory.dmp

Filesize
48KB

Download
memory/2420-1-0x000007FEF5860000-0x000007FEF624C000-memory.dmp

Filesize
9.9MB

Download
memory/2420-8-0x000007FEF5860000-0x000007FEF624C000-memory.dmp

Filesize
9.9MB

Download
memory/3036-7-0x00000000003B0000-0x00000000003BC000-memory.dmp

Filesize
48KB

Download
memory/3036-9-0x000007FEF5860000-0x000007FEF624C000-memory.dmp

Filesize
9.9MB

Download
memory/3036-11-0x000000001AD10000-0x000000001AD90000-memory.dmp

Filesize
512KB

Download
memory/3036-441-0x000007FEF5860000-0x000007FEF624C000-memory.dmp

Filesize
9.9MB

Download
memory/3036-442-0x000000001AD10000-0x000000001AD90000-memory.dmp

Filesize
512KB

Download