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
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
13-07-2024 09:46

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General

Target

bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe
Size

205KB
MD5

62e53bc5aa5f2a70a54e328bff51505f
SHA1

e7deceee97a09d539d81eb91f988ece5e2a2ff51
SHA256

bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369
SHA512

a676dd284188271be1760ed1edd3320341713662aba1c615481f256007e614e58756a7b6a565beed777230c2ae829c561e3bf3510921ad6495d3776cfdfaa793
SSDEEP

6144:+B4mr9NzqHW7V5V9w/UIRZizI1aqebq/lsyp:+B40qHW7nU/pZmiXqy

Score

10^/10

chaos defense_evasion evasion execution impact ransomware spyware stealer

Malware Config

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 2 IoCs

resource	yara_rule
behavioral23/memory/2396-0-0x00000000002D0000-0x0000000000308000-memory.dmp	family_chaos
behavioral23/files/0x000c000000023369-6.dat	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

pid	Process
532	bcdedit.exe
2712	bcdedit.exe

Renames multiple (206) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

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
1388	wbadmin.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-384068567-2943195810-3631207890-1000\Control Panel\International\Geo\Nation	svchost.exe
Key value queried	\REGISTRY\USER\S-1-5-21-384068567-2943195810-3631207890-1000\Control Panel\International\Geo\Nation	bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.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
2720	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\Documents\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\Internet Explorer\Quick Launch\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\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\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\SendTo\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\Pictures\Camera Roll\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\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\Admin\Saved Games\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AccountPictures\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\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links\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\Libraries\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\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\Programs\System Tools\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\OneDrive\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\Saved 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\Start Menu\Programs\Accessibility\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-384068567-2943195810-3631207890-1000\desktop.ini	svchost.exe

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

System Information Discovery
T1082

Checks SCSI registry key(s) 3 TTPs 4 IoCs

SCSI 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\Enum\SCSI\CDROM&VEN_QEMU&PROD_QEMU_DVD-ROM\4&215468A5&0&010000	vds.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_QEMU&Prod_QEMU_DVD-ROM\4&215468a5&0&010000\FriendlyName	vds.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_DADY&PROD_HARDDISK\4&215468A5&0&000000	vds.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName	vds.exe

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

pid	Process
2676	vssadmin.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-384068567-2943195810-3631207890-1000_Classes\Local Settings	svchost.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
3064	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2720	svchost.exe

Suspicious behavior: EnumeratesProcesses 39 IoCs

pid	Process
2396	bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe
2396	bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe
2396	bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe
2396	bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe
2396	bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe
2396	bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe
2396	bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe
2396	bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe
2396	bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe
2396	bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe
2396	bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe
2396	bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe
2396	bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe
2396	bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe
2396	bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe
2396	bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe
2396	bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe
2396	bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe
2396	bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe

Suspicious use of AdjustPrivilegeToken 50 IoCs

description	pid	Process
Token: SeDebugPrivilege	2396	bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe
Token: SeDebugPrivilege	2720	svchost.exe
Token: SeBackupPrivilege	4980	vssvc.exe
Token: SeRestorePrivilege	4980	vssvc.exe
Token: SeAuditPrivilege	4980	vssvc.exe
Token: SeIncreaseQuotaPrivilege	2516	WMIC.exe
Token: SeSecurityPrivilege	2516	WMIC.exe
Token: SeTakeOwnershipPrivilege	2516	WMIC.exe
Token: SeLoadDriverPrivilege	2516	WMIC.exe
Token: SeSystemProfilePrivilege	2516	WMIC.exe
Token: SeSystemtimePrivilege	2516	WMIC.exe
Token: SeProfSingleProcessPrivilege	2516	WMIC.exe
Token: SeIncBasePriorityPrivilege	2516	WMIC.exe
Token: SeCreatePagefilePrivilege	2516	WMIC.exe
Token: SeBackupPrivilege	2516	WMIC.exe
Token: SeRestorePrivilege	2516	WMIC.exe
Token: SeShutdownPrivilege	2516	WMIC.exe
Token: SeDebugPrivilege	2516	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2516	WMIC.exe
Token: SeRemoteShutdownPrivilege	2516	WMIC.exe
Token: SeUndockPrivilege	2516	WMIC.exe
Token: SeManageVolumePrivilege	2516	WMIC.exe
Token: 33	2516	WMIC.exe
Token: 34	2516	WMIC.exe
Token: 35	2516	WMIC.exe
Token: 36	2516	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2516	WMIC.exe
Token: SeSecurityPrivilege	2516	WMIC.exe
Token: SeTakeOwnershipPrivilege	2516	WMIC.exe
Token: SeLoadDriverPrivilege	2516	WMIC.exe
Token: SeSystemProfilePrivilege	2516	WMIC.exe
Token: SeSystemtimePrivilege	2516	WMIC.exe
Token: SeProfSingleProcessPrivilege	2516	WMIC.exe
Token: SeIncBasePriorityPrivilege	2516	WMIC.exe
Token: SeCreatePagefilePrivilege	2516	WMIC.exe
Token: SeBackupPrivilege	2516	WMIC.exe
Token: SeRestorePrivilege	2516	WMIC.exe
Token: SeShutdownPrivilege	2516	WMIC.exe
Token: SeDebugPrivilege	2516	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2516	WMIC.exe
Token: SeRemoteShutdownPrivilege	2516	WMIC.exe
Token: SeUndockPrivilege	2516	WMIC.exe
Token: SeManageVolumePrivilege	2516	WMIC.exe
Token: 33	2516	WMIC.exe
Token: 34	2516	WMIC.exe
Token: 35	2516	WMIC.exe
Token: 36	2516	WMIC.exe
Token: SeBackupPrivilege	4164	wbengine.exe
Token: SeRestorePrivilege	4164	wbengine.exe
Token: SeSecurityPrivilege	4164	wbengine.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2396 wrote to memory of 2720	2396	bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe	86
PID 2396 wrote to memory of 2720	2396	bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe	86
PID 2720 wrote to memory of 3016	2720	svchost.exe	88
PID 2720 wrote to memory of 3016	2720	svchost.exe	88
PID 3016 wrote to memory of 2676	3016	cmd.exe	90
PID 3016 wrote to memory of 2676	3016	cmd.exe	90
PID 3016 wrote to memory of 2516	3016	cmd.exe	93
PID 3016 wrote to memory of 2516	3016	cmd.exe	93
PID 2720 wrote to memory of 4988	2720	svchost.exe	95
PID 2720 wrote to memory of 4988	2720	svchost.exe	95
PID 4988 wrote to memory of 532	4988	cmd.exe	97
PID 4988 wrote to memory of 532	4988	cmd.exe	97
PID 4988 wrote to memory of 2712	4988	cmd.exe	98
PID 4988 wrote to memory of 2712	4988	cmd.exe	98
PID 2720 wrote to memory of 692	2720	svchost.exe	99
PID 2720 wrote to memory of 692	2720	svchost.exe	99
PID 692 wrote to memory of 1388	692	cmd.exe	101
PID 692 wrote to memory of 1388	692	cmd.exe	101
PID 2720 wrote to memory of 3064	2720	svchost.exe	105
PID 2720 wrote to memory of 3064	2720	svchost.exe	105

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\bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe
"C:\Users\Admin\AppData\Local\Temp\bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2396
- C:\Users\Admin\AppData\Roaming\svchost.exe
  "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Drops desktop.ini file(s)
  - Modifies registry class
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2720
- - 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:3016
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2676
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2516
- - 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:4988
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:532
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2712
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:692
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:1388
- - 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:3064

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4980

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4164

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:3620

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
- Checks SCSI registry key(s)
PID:5108

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

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

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

Loading Replay Monitor...

Downloads

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

Filesize
205KB

MD5
62e53bc5aa5f2a70a54e328bff51505f

SHA1
e7deceee97a09d539d81eb91f988ece5e2a2ff51

SHA256
bb5ca9d8de51734dbd14dc081c7c892d819cd14fafd7ccd62849d70f9e679369

SHA512
a676dd284188271be1760ed1edd3320341713662aba1c615481f256007e614e58756a7b6a565beed777230c2ae829c561e3bf3510921ad6495d3776cfdfaa793

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

Filesize
844B

MD5
a23e76ce33adf72409fb0c43393d3087

SHA1
502620245be1d0912ab9c4fb5390ab14e27778a8

SHA256
88702c38b8bea9555a13ae747cbfdf2947fff6060f4fef75486025e0152ddf3a

SHA512
24fdd6761b29eb62ecfefa7a5ed15705645c3a303ada3728823382ba38e08eae12f15840fb65361391cff1ba4cad55fdfb6e0144c9e95b7e7fbe928319d732bb

Download Submit
memory/2396-0-0x00000000002D0000-0x0000000000308000-memory.dmp

Filesize
224KB

Download
memory/2396-1-0x00007FF914C93000-0x00007FF914C95000-memory.dmp

Filesize
8KB

Download
memory/2720-14-0x00007FF914EE3000-0x00007FF914EE5000-memory.dmp

Filesize
8KB

Download
memory/2720-481-0x00007FF914EE3000-0x00007FF914EE5000-memory.dmp

Filesize
8KB

Download