chaos | d418ca84ca4bb7db72d2b00f8d6225a57909e02f712c7b0e2d9cefb2e18d0737

Resubmissions

13-07-2024 09:54

240713-lxbx6swdmm 10

13-07-2024 09:50

240713-lvbvdsyapd 10

13-07-2024 09:46

240713-lr1dksyajd 10

Analysis

max time kernel
840s
max time network
841s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
13-07-2024 09:50

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General

Target

2ebb2a34dd6633e785f67d118a8c778969e4e34d667cf554268997e13920a1c6.exe
Size

241KB
MD5

692ea33f6b08ccd47ef8a4f8b913fc4f
SHA1

8a2f0c6b5f422cb2125273be1eece261aa3007e0
SHA256

2ebb2a34dd6633e785f67d118a8c778969e4e34d667cf554268997e13920a1c6
SHA512

df87964befe8dad825e869e4d915c46d71bb72b4f318f9c52d9a1381d391bad73aef5e555057e8189dca479359fa635b19727bb64d1876c1403057ed1e1faca7
SSDEEP

3072:aoT9szr954q4qf8NWPr0Dp/XpoO1zDsJOFQVrFsUBTa488+6WniGxfLwxhqSEaqw:0r95wCPADpaOOwajTa65HyigEX1OeLn

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 3 IoCs

resource	yara_rule
behavioral10/memory/1648-1-0x0000000000C90000-0x0000000000CD2000-memory.dmp	family_chaos
behavioral10/files/0x00080000000120f4-5.dat	family_chaos
behavioral10/memory/2192-7-0x0000000000A50000-0x0000000000A92000-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

pid	Process
2984	bcdedit.exe
2196	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
1740	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 THIS.txt	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2192	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\Saved Games\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\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\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\Downloads\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\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\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\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\Favorites\Links for United States\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\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\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links\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\Videos\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-2958949473-3205530200-1453100116-1000\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\Documents\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\Desktop\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\Public\Videos\Sample Videos\desktop.ini	svchost.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\29g9301hy.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

pid	Process
1548	vssadmin.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2192	svchost.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
1648	2ebb2a34dd6633e785f67d118a8c778969e4e34d667cf554268997e13920a1c6.exe
1648	2ebb2a34dd6633e785f67d118a8c778969e4e34d667cf554268997e13920a1c6.exe
1648	2ebb2a34dd6633e785f67d118a8c778969e4e34d667cf554268997e13920a1c6.exe
2192	svchost.exe
2192	svchost.exe
2192	svchost.exe
2192	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	1648	2ebb2a34dd6633e785f67d118a8c778969e4e34d667cf554268997e13920a1c6.exe
Token: SeDebugPrivilege	2192	svchost.exe
Token: SeBackupPrivilege	2764	vssvc.exe
Token: SeRestorePrivilege	2764	vssvc.exe
Token: SeAuditPrivilege	2764	vssvc.exe
Token: SeIncreaseQuotaPrivilege	2160	WMIC.exe
Token: SeSecurityPrivilege	2160	WMIC.exe
Token: SeTakeOwnershipPrivilege	2160	WMIC.exe
Token: SeLoadDriverPrivilege	2160	WMIC.exe
Token: SeSystemProfilePrivilege	2160	WMIC.exe
Token: SeSystemtimePrivilege	2160	WMIC.exe
Token: SeProfSingleProcessPrivilege	2160	WMIC.exe
Token: SeIncBasePriorityPrivilege	2160	WMIC.exe
Token: SeCreatePagefilePrivilege	2160	WMIC.exe
Token: SeBackupPrivilege	2160	WMIC.exe
Token: SeRestorePrivilege	2160	WMIC.exe
Token: SeShutdownPrivilege	2160	WMIC.exe
Token: SeDebugPrivilege	2160	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2160	WMIC.exe
Token: SeRemoteShutdownPrivilege	2160	WMIC.exe
Token: SeUndockPrivilege	2160	WMIC.exe
Token: SeManageVolumePrivilege	2160	WMIC.exe
Token: 33	2160	WMIC.exe
Token: 34	2160	WMIC.exe
Token: 35	2160	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2160	WMIC.exe
Token: SeSecurityPrivilege	2160	WMIC.exe
Token: SeTakeOwnershipPrivilege	2160	WMIC.exe
Token: SeLoadDriverPrivilege	2160	WMIC.exe
Token: SeSystemProfilePrivilege	2160	WMIC.exe
Token: SeSystemtimePrivilege	2160	WMIC.exe
Token: SeProfSingleProcessPrivilege	2160	WMIC.exe
Token: SeIncBasePriorityPrivilege	2160	WMIC.exe
Token: SeCreatePagefilePrivilege	2160	WMIC.exe
Token: SeBackupPrivilege	2160	WMIC.exe
Token: SeRestorePrivilege	2160	WMIC.exe
Token: SeShutdownPrivilege	2160	WMIC.exe
Token: SeDebugPrivilege	2160	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2160	WMIC.exe
Token: SeRemoteShutdownPrivilege	2160	WMIC.exe
Token: SeUndockPrivilege	2160	WMIC.exe
Token: SeManageVolumePrivilege	2160	WMIC.exe
Token: 33	2160	WMIC.exe
Token: 34	2160	WMIC.exe
Token: 35	2160	WMIC.exe
Token: SeBackupPrivilege	2248	wbengine.exe
Token: SeRestorePrivilege	2248	wbengine.exe
Token: SeSecurityPrivilege	2248	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1648 wrote to memory of 2192	1648	2ebb2a34dd6633e785f67d118a8c778969e4e34d667cf554268997e13920a1c6.exe	31
PID 1648 wrote to memory of 2192	1648	2ebb2a34dd6633e785f67d118a8c778969e4e34d667cf554268997e13920a1c6.exe	31
PID 1648 wrote to memory of 2192	1648	2ebb2a34dd6633e785f67d118a8c778969e4e34d667cf554268997e13920a1c6.exe	31
PID 2192 wrote to memory of 848	2192	svchost.exe	33
PID 2192 wrote to memory of 848	2192	svchost.exe	33
PID 2192 wrote to memory of 848	2192	svchost.exe	33
PID 848 wrote to memory of 1548	848	cmd.exe	35
PID 848 wrote to memory of 1548	848	cmd.exe	35
PID 848 wrote to memory of 1548	848	cmd.exe	35
PID 848 wrote to memory of 2160	848	cmd.exe	38
PID 848 wrote to memory of 2160	848	cmd.exe	38
PID 848 wrote to memory of 2160	848	cmd.exe	38
PID 2192 wrote to memory of 1544	2192	svchost.exe	40
PID 2192 wrote to memory of 1544	2192	svchost.exe	40
PID 2192 wrote to memory of 1544	2192	svchost.exe	40
PID 1544 wrote to memory of 2984	1544	cmd.exe	42
PID 1544 wrote to memory of 2984	1544	cmd.exe	42
PID 1544 wrote to memory of 2984	1544	cmd.exe	42
PID 1544 wrote to memory of 2196	1544	cmd.exe	43
PID 1544 wrote to memory of 2196	1544	cmd.exe	43
PID 1544 wrote to memory of 2196	1544	cmd.exe	43
PID 2192 wrote to memory of 1784	2192	svchost.exe	44
PID 2192 wrote to memory of 1784	2192	svchost.exe	44
PID 2192 wrote to memory of 1784	2192	svchost.exe	44
PID 1784 wrote to memory of 1740	1784	cmd.exe	46
PID 1784 wrote to memory of 1740	1784	cmd.exe	46
PID 1784 wrote to memory of 1740	1784	cmd.exe	46
PID 2192 wrote to memory of 580	2192	svchost.exe	50
PID 2192 wrote to memory of 580	2192	svchost.exe	50
PID 2192 wrote to memory of 580	2192	svchost.exe	50

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\2ebb2a34dd6633e785f67d118a8c778969e4e34d667cf554268997e13920a1c6.exe
"C:\Users\Admin\AppData\Local\Temp\2ebb2a34dd6633e785f67d118a8c778969e4e34d667cf554268997e13920a1c6.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1648
- 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:2192
- - 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:848
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:1548
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2160
- - 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:1544
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2984
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2196
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1784
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:1740
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\READ THIS.txt
    3⤵
    PID:580

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2764

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2248

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:1392

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:1464

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
241KB

MD5
692ea33f6b08ccd47ef8a4f8b913fc4f

SHA1
8a2f0c6b5f422cb2125273be1eece261aa3007e0

SHA256
2ebb2a34dd6633e785f67d118a8c778969e4e34d667cf554268997e13920a1c6

SHA512
df87964befe8dad825e869e4d915c46d71bb72b4f318f9c52d9a1381d391bad73aef5e555057e8189dca479359fa635b19727bb64d1876c1403057ed1e1faca7

Download Submit
C:\Users\Admin\Documents\READ THIS.txt

Filesize
1KB

MD5
c7a49f0289132cbf3759e0838f6f9882

SHA1
005efab508820f1eb5ccdb625f0e0734443433ea

SHA256
18a896867fff1e840402ff32328804174ef2412a972198a28f9f1bc5afdc2a81

SHA512
a6e8105f43ab3b62e2ac21e0b94d8fcbdd7e29db884a78e8a6076e025688175d9307441c546414682d1b682d3c6e2682d70a4a6b3cb60f20dd0bd6e7f0e5440f

Download Submit
memory/1648-0-0x000007FEF5853000-0x000007FEF5854000-memory.dmp

Filesize
4KB

Download
memory/1648-1-0x0000000000C90000-0x0000000000CD2000-memory.dmp

Filesize
264KB

Download
memory/2192-7-0x0000000000A50000-0x0000000000A92000-memory.dmp

Filesize
264KB

Download
memory/2192-9-0x000007FEF5850000-0x000007FEF623C000-memory.dmp

Filesize
9.9MB

Download
memory/2192-13-0x000007FEF5850000-0x000007FEF623C000-memory.dmp

Filesize
9.9MB

Download
memory/2192-483-0x000007FEF5850000-0x000007FEF623C000-memory.dmp

Filesize
9.9MB

Download