chaos | 0d9fcb8894240750cb5e4222ea78572aba6618eb5297c2069588ceb979d52d8b

Resubmissions

13-07-2024 09:54

240713-lxcvgawdmn 10

13-07-2024 09:52

240713-lv46yawdkj 10

13-07-2024 09:46

240713-lrz3tayajc 10

Analysis

max time kernel
615s
max time network
617s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
13-07-2024 09:52

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General

Target

3998d0e987accc2837c6bf87fdb2796d0170ae2a79383b78fd778531410e337f.exe
Size

153KB
MD5

4c19104c6df0817095be0846b1607de6
SHA1

ae3bf7a043cb10e8b206261af6af1558fc3d518b
SHA256

3998d0e987accc2837c6bf87fdb2796d0170ae2a79383b78fd778531410e337f
SHA512

d1ac86c12068192fe1dafd16a6c73e1dbabf0be5ca8c59ba3eeb6290c6061a207c0f91b77f42b190d4f8ebdee4a33a7dc596c7883c451cb039c3c2a0f37e8e4c
SSDEEP

3072:o3kkKmAr9iVE3E04sMsXVpBWwLJwvkywY2ZDja9eIBdvhGkJJ9QuxIMb68J5K:y8r9it04XYVBIkNYcaeUvkkD9QRMb6

Score

10^/10

chaos defense_evasion evasion execution impact ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\read_me.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

Processes:

resource	yara_rule
behavioral4/memory/2528-1-0x0000000000100000-0x000000000012C000-memory.dmp	family_chaos
C:\Users\Admin\AppData\Roaming\svchost.exe	family_chaos
behavioral4/memory/1808-7-0x0000000000350000-0x000000000037C000-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
Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
ransomware evasion

Inhibit System Recovery
T1490

Processes:

bcdedit.exebcdedit.exe

pid process

2784 bcdedit.exe
2656 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

Processes:

wbadmin.exe

pid process

1932 wbadmin.exe

pid	process
2784	bcdedit.exe
2656	bcdedit.exe

pid	process
1932	wbadmin.exe

Drops startup file 3 IoCs

Processes:

svchost.exe

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_me.txt	svchost.exe

Executes dropped EXE 1 IoCs

Processes:

svchost.exe

pid process

1808 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

pid	process
1808	svchost.exe

Drops desktop.ini file(s) 34 IoCs

Processes:

svchost.exe

description	ioc	process
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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\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\Saved Games\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\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\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	C:\Users\Public\Desktop\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\Start Menu\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\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\Public\Documents\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-2172136094-3310281978-782691160-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\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\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\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\Public\Pictures\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\Libraries\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\System Tools\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\Music\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\Public\Music\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\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini	svchost.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\8ljv045xp.jpg"	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 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
ransomware

File Deletion
T1070.004

Inhibit System Recovery
T1490

Direct Volume Access
T1006

Processes:

vssadmin.exe

pid process

2836 vssadmin.exe
Opens file in notepad (likely ransom note) 1 IoCs
ransomware

Processes:

NOTEPAD.EXE

pid process

1740 NOTEPAD.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

svchost.exe

pid process

1808 svchost.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

3998d0e987accc2837c6bf87fdb2796d0170ae2a79383b78fd778531410e337f.exesvchost.exe

pid process

2528 3998d0e987accc2837c6bf87fdb2796d0170ae2a79383b78fd778531410e337f.exe
1808 svchost.exe
1808 svchost.exe

pid	process
2836	vssadmin.exe

pid	process
1740	NOTEPAD.EXE

pid	process
1808	svchost.exe

pid	process
2528	3998d0e987accc2837c6bf87fdb2796d0170ae2a79383b78fd778531410e337f.exe
1808	svchost.exe
1808	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

3998d0e987accc2837c6bf87fdb2796d0170ae2a79383b78fd778531410e337f.exesvchost.exevssvc.exeWMIC.exewbengine.exe

description	pid	process
Token: SeDebugPrivilege	2528	3998d0e987accc2837c6bf87fdb2796d0170ae2a79383b78fd778531410e337f.exe
Token: SeDebugPrivilege	1808	svchost.exe
Token: SeBackupPrivilege	2768	vssvc.exe
Token: SeRestorePrivilege	2768	vssvc.exe
Token: SeAuditPrivilege	2768	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1052	WMIC.exe
Token: SeSecurityPrivilege	1052	WMIC.exe
Token: SeTakeOwnershipPrivilege	1052	WMIC.exe
Token: SeLoadDriverPrivilege	1052	WMIC.exe
Token: SeSystemProfilePrivilege	1052	WMIC.exe
Token: SeSystemtimePrivilege	1052	WMIC.exe
Token: SeProfSingleProcessPrivilege	1052	WMIC.exe
Token: SeIncBasePriorityPrivilege	1052	WMIC.exe
Token: SeCreatePagefilePrivilege	1052	WMIC.exe
Token: SeBackupPrivilege	1052	WMIC.exe
Token: SeRestorePrivilege	1052	WMIC.exe
Token: SeShutdownPrivilege	1052	WMIC.exe
Token: SeDebugPrivilege	1052	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1052	WMIC.exe
Token: SeRemoteShutdownPrivilege	1052	WMIC.exe
Token: SeUndockPrivilege	1052	WMIC.exe
Token: SeManageVolumePrivilege	1052	WMIC.exe
Token: 33	1052	WMIC.exe
Token: 34	1052	WMIC.exe
Token: 35	1052	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1052	WMIC.exe
Token: SeSecurityPrivilege	1052	WMIC.exe
Token: SeTakeOwnershipPrivilege	1052	WMIC.exe
Token: SeLoadDriverPrivilege	1052	WMIC.exe
Token: SeSystemProfilePrivilege	1052	WMIC.exe
Token: SeSystemtimePrivilege	1052	WMIC.exe
Token: SeProfSingleProcessPrivilege	1052	WMIC.exe
Token: SeIncBasePriorityPrivilege	1052	WMIC.exe
Token: SeCreatePagefilePrivilege	1052	WMIC.exe
Token: SeBackupPrivilege	1052	WMIC.exe
Token: SeRestorePrivilege	1052	WMIC.exe
Token: SeShutdownPrivilege	1052	WMIC.exe
Token: SeDebugPrivilege	1052	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1052	WMIC.exe
Token: SeRemoteShutdownPrivilege	1052	WMIC.exe
Token: SeUndockPrivilege	1052	WMIC.exe
Token: SeManageVolumePrivilege	1052	WMIC.exe
Token: 33	1052	WMIC.exe
Token: 34	1052	WMIC.exe
Token: 35	1052	WMIC.exe
Token: SeBackupPrivilege	2920	wbengine.exe
Token: SeRestorePrivilege	2920	wbengine.exe
Token: SeSecurityPrivilege	2920	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

3998d0e987accc2837c6bf87fdb2796d0170ae2a79383b78fd778531410e337f.exesvchost.execmd.execmd.execmd.exe

description	pid	process	target process
PID 2528 wrote to memory of 1808	2528	3998d0e987accc2837c6bf87fdb2796d0170ae2a79383b78fd778531410e337f.exe	svchost.exe
PID 2528 wrote to memory of 1808	2528	3998d0e987accc2837c6bf87fdb2796d0170ae2a79383b78fd778531410e337f.exe	svchost.exe
PID 2528 wrote to memory of 1808	2528	3998d0e987accc2837c6bf87fdb2796d0170ae2a79383b78fd778531410e337f.exe	svchost.exe
PID 1808 wrote to memory of 2884	1808	svchost.exe	cmd.exe
PID 1808 wrote to memory of 2884	1808	svchost.exe	cmd.exe
PID 1808 wrote to memory of 2884	1808	svchost.exe	cmd.exe
PID 2884 wrote to memory of 2836	2884	cmd.exe	vssadmin.exe
PID 2884 wrote to memory of 2836	2884	cmd.exe	vssadmin.exe
PID 2884 wrote to memory of 2836	2884	cmd.exe	vssadmin.exe
PID 2884 wrote to memory of 1052	2884	cmd.exe	WMIC.exe
PID 2884 wrote to memory of 1052	2884	cmd.exe	WMIC.exe
PID 2884 wrote to memory of 1052	2884	cmd.exe	WMIC.exe
PID 1808 wrote to memory of 1992	1808	svchost.exe	cmd.exe
PID 1808 wrote to memory of 1992	1808	svchost.exe	cmd.exe
PID 1808 wrote to memory of 1992	1808	svchost.exe	cmd.exe
PID 1992 wrote to memory of 2784	1992	cmd.exe	bcdedit.exe
PID 1992 wrote to memory of 2784	1992	cmd.exe	bcdedit.exe
PID 1992 wrote to memory of 2784	1992	cmd.exe	bcdedit.exe
PID 1992 wrote to memory of 2656	1992	cmd.exe	bcdedit.exe
PID 1992 wrote to memory of 2656	1992	cmd.exe	bcdedit.exe
PID 1992 wrote to memory of 2656	1992	cmd.exe	bcdedit.exe
PID 1808 wrote to memory of 1928	1808	svchost.exe	cmd.exe
PID 1808 wrote to memory of 1928	1808	svchost.exe	cmd.exe
PID 1808 wrote to memory of 1928	1808	svchost.exe	cmd.exe
PID 1928 wrote to memory of 1932	1928	cmd.exe	wbadmin.exe
PID 1928 wrote to memory of 1932	1928	cmd.exe	wbadmin.exe
PID 1928 wrote to memory of 1932	1928	cmd.exe	wbadmin.exe
PID 1808 wrote to memory of 1740	1808	svchost.exe	NOTEPAD.EXE
PID 1808 wrote to memory of 1740	1808	svchost.exe	NOTEPAD.EXE
PID 1808 wrote to memory of 1740	1808	svchost.exe	NOTEPAD.EXE

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\3998d0e987accc2837c6bf87fdb2796d0170ae2a79383b78fd778531410e337f.exe
"C:\Users\Admin\AppData\Local\Temp\3998d0e987accc2837c6bf87fdb2796d0170ae2a79383b78fd778531410e337f.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2528

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)
- Sets desktop wallpaper using registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1808

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:2884

C:\Windows\system32\vssadmin.exe
vssadmin delete shadows /all /quiet
4⤵
- Interacts with shadow copies
PID:2836

C:\Windows\System32\Wbem\WMIC.exe
wmic shadowcopy delete
4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1052

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:1992

C:\Windows\system32\bcdedit.exe
bcdedit /set {default} bootstatuspolicy ignoreallfailures
4⤵
- Modifies boot configuration data using bcdedit
PID:2784

C:\Windows\system32\bcdedit.exe
bcdedit /set {default} recoveryenabled no
4⤵
- Modifies boot configuration data using bcdedit
PID:2656

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
3⤵
- Suspicious use of WriteProcessMemory
PID:1928

C:\Windows\system32\wbadmin.exe
wbadmin delete catalog -quiet
4⤵
- Deletes backup catalog
PID:1932

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_me.txt
3⤵
- Opens file in notepad (likely ransom note)
PID:1740

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2768

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2920

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:1656

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:1144

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

Direct Volume Access

T1006

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

T1112

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

Defacement

T1491

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

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

Filesize
153KB

MD5
4c19104c6df0817095be0846b1607de6

SHA1
ae3bf7a043cb10e8b206261af6af1558fc3d518b

SHA256
3998d0e987accc2837c6bf87fdb2796d0170ae2a79383b78fd778531410e337f

SHA512
d1ac86c12068192fe1dafd16a6c73e1dbabf0be5ca8c59ba3eeb6290c6061a207c0f91b77f42b190d4f8ebdee4a33a7dc596c7883c451cb039c3c2a0f37e8e4c

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

Filesize
962B

MD5
1a31305937bebce0ccfb0e6142831452

SHA1
74d6e8aed55286c66b2dd15cf16c5ee53056b1c9

SHA256
62d5d9737197180da1404755041db64f82667b9bb4ae6ff6619b252ab5cb1695

SHA512
67d2155954a133e395084a5fe38adbe923a99603ffffcf1981c942f4f87d1b914808a210c33c10e59eef06873d73de62e2ccaabccd88a8e1055e90a6985be3c5

Download Submit
memory/1808-7-0x0000000000350000-0x000000000037C000-memory.dmp

Filesize
176KB

Download
memory/1808-15-0x000007FEF5760000-0x000007FEF614C000-memory.dmp

Filesize
9.9MB

Download
memory/1808-75-0x000007FEF5760000-0x000007FEF614C000-memory.dmp

Filesize
9.9MB

Download
memory/1808-76-0x000007FEF5760000-0x000007FEF614C000-memory.dmp

Filesize
9.9MB

Download
memory/1808-77-0x000007FEF5760000-0x000007FEF614C000-memory.dmp

Filesize
9.9MB

Download
memory/2528-0-0x000007FEF5763000-0x000007FEF5764000-memory.dmp

Filesize
4KB

Download
memory/2528-1-0x0000000000100000-0x000000000012C000-memory.dmp

Filesize
176KB

Download