chaos | 8ff8af7b31fe7ed58b2afc1b556c635c2ccdf20bce7ca371897dea490a8b5027

Analysis

max time kernel
119s
max time network
122s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
13-07-2024 09:29

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General

Target

0f3d700c95b21e5437c0aedb3cacd787ce6701c49180d8d564e4574dffc42190.exe
Size

1.9MB
MD5

2c6f8e680a400cb2b5426090ccbdea93
SHA1

47a691c438547b27fac9896f3783026d8be4dbe9
SHA256

0f3d700c95b21e5437c0aedb3cacd787ce6701c49180d8d564e4574dffc42190
SHA512

48a70440e4009c4ab2a913ee3b9dc24b73ab4413cc82f5e8194f1cca87ead356de1de90c461c9109afa5f690cb0c9365f49a5ea83f54b4ad97c4287346237f03
SSDEEP

24576:CSndG2iSNjN2w9Os9cRfO/d8mT6c6aVqwPhUMel84Mn:HfJqsgXmgyJPu

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

Processes:

resource	yara_rule
behavioral29/memory/3040-1-0x00000000010B0000-0x000000000129E000-memory.dmp	family_chaos
C:\Users\Admin\AppData\Roaming\Windows Defender.exe	family_chaos
behavioral29/memory/2584-8-0x0000000000EF0000-0x00000000010DE000-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

1680 bcdedit.exe
2240 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

348 wbadmin.exe

pid	process
1680	bcdedit.exe
2240	bcdedit.exe

pid	process
348	wbadmin.exe

Drops startup file 3 IoCs

Processes:

Windows Defender.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows Defender.url	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini	Windows Defender.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\傻逼，你被耍了！你的所有文件都被加密！.txt	Windows Defender.exe

Executes dropped EXE 1 IoCs

Processes:

Windows Defender.exe

pid process

2584 Windows Defender.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
2584	Windows Defender.exe

Drops desktop.ini file(s) 34 IoCs

Processes:

Windows Defender.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Public\Music\Sample Music\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Public\Videos\Sample Videos\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Saved Games\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Favorites\Links for United States\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	Windows Defender.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-3502430532-24693940-2469786940-1000\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	Windows Defender.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini	Windows Defender.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

Processes:

Windows Defender.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\jijo15028.jpg"	Windows Defender.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

3044 vssadmin.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

Windows Defender.exe

pid process

2584 Windows Defender.exe

pid	process
3044	vssadmin.exe

pid	process
2584	Windows Defender.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

0f3d700c95b21e5437c0aedb3cacd787ce6701c49180d8d564e4574dffc42190.exeWindows Defender.exe

pid	process
3040	0f3d700c95b21e5437c0aedb3cacd787ce6701c49180d8d564e4574dffc42190.exe
3040	0f3d700c95b21e5437c0aedb3cacd787ce6701c49180d8d564e4574dffc42190.exe
3040	0f3d700c95b21e5437c0aedb3cacd787ce6701c49180d8d564e4574dffc42190.exe
2584	Windows Defender.exe
2584	Windows Defender.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

0f3d700c95b21e5437c0aedb3cacd787ce6701c49180d8d564e4574dffc42190.exeWindows Defender.exevssvc.exeWMIC.exewbengine.exe

description	pid	process
Token: SeDebugPrivilege	3040	0f3d700c95b21e5437c0aedb3cacd787ce6701c49180d8d564e4574dffc42190.exe
Token: SeDebugPrivilege	2584	Windows Defender.exe
Token: SeBackupPrivilege	2156	vssvc.exe
Token: SeRestorePrivilege	2156	vssvc.exe
Token: SeAuditPrivilege	2156	vssvc.exe
Token: SeIncreaseQuotaPrivilege	3008	WMIC.exe
Token: SeSecurityPrivilege	3008	WMIC.exe
Token: SeTakeOwnershipPrivilege	3008	WMIC.exe
Token: SeLoadDriverPrivilege	3008	WMIC.exe
Token: SeSystemProfilePrivilege	3008	WMIC.exe
Token: SeSystemtimePrivilege	3008	WMIC.exe
Token: SeProfSingleProcessPrivilege	3008	WMIC.exe
Token: SeIncBasePriorityPrivilege	3008	WMIC.exe
Token: SeCreatePagefilePrivilege	3008	WMIC.exe
Token: SeBackupPrivilege	3008	WMIC.exe
Token: SeRestorePrivilege	3008	WMIC.exe
Token: SeShutdownPrivilege	3008	WMIC.exe
Token: SeDebugPrivilege	3008	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3008	WMIC.exe
Token: SeRemoteShutdownPrivilege	3008	WMIC.exe
Token: SeUndockPrivilege	3008	WMIC.exe
Token: SeManageVolumePrivilege	3008	WMIC.exe
Token: 33	3008	WMIC.exe
Token: 34	3008	WMIC.exe
Token: 35	3008	WMIC.exe
Token: SeIncreaseQuotaPrivilege	3008	WMIC.exe
Token: SeSecurityPrivilege	3008	WMIC.exe
Token: SeTakeOwnershipPrivilege	3008	WMIC.exe
Token: SeLoadDriverPrivilege	3008	WMIC.exe
Token: SeSystemProfilePrivilege	3008	WMIC.exe
Token: SeSystemtimePrivilege	3008	WMIC.exe
Token: SeProfSingleProcessPrivilege	3008	WMIC.exe
Token: SeIncBasePriorityPrivilege	3008	WMIC.exe
Token: SeCreatePagefilePrivilege	3008	WMIC.exe
Token: SeBackupPrivilege	3008	WMIC.exe
Token: SeRestorePrivilege	3008	WMIC.exe
Token: SeShutdownPrivilege	3008	WMIC.exe
Token: SeDebugPrivilege	3008	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3008	WMIC.exe
Token: SeRemoteShutdownPrivilege	3008	WMIC.exe
Token: SeUndockPrivilege	3008	WMIC.exe
Token: SeManageVolumePrivilege	3008	WMIC.exe
Token: 33	3008	WMIC.exe
Token: 34	3008	WMIC.exe
Token: 35	3008	WMIC.exe
Token: SeBackupPrivilege	2228	wbengine.exe
Token: SeRestorePrivilege	2228	wbengine.exe
Token: SeSecurityPrivilege	2228	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

0f3d700c95b21e5437c0aedb3cacd787ce6701c49180d8d564e4574dffc42190.exeWindows Defender.execmd.execmd.execmd.exe

description	pid	process	target process
PID 3040 wrote to memory of 2584	3040	0f3d700c95b21e5437c0aedb3cacd787ce6701c49180d8d564e4574dffc42190.exe	Windows Defender.exe
PID 3040 wrote to memory of 2584	3040	0f3d700c95b21e5437c0aedb3cacd787ce6701c49180d8d564e4574dffc42190.exe	Windows Defender.exe
PID 3040 wrote to memory of 2584	3040	0f3d700c95b21e5437c0aedb3cacd787ce6701c49180d8d564e4574dffc42190.exe	Windows Defender.exe
PID 2584 wrote to memory of 2360	2584	Windows Defender.exe	cmd.exe
PID 2584 wrote to memory of 2360	2584	Windows Defender.exe	cmd.exe
PID 2584 wrote to memory of 2360	2584	Windows Defender.exe	cmd.exe
PID 2360 wrote to memory of 3044	2360	cmd.exe	vssadmin.exe
PID 2360 wrote to memory of 3044	2360	cmd.exe	vssadmin.exe
PID 2360 wrote to memory of 3044	2360	cmd.exe	vssadmin.exe
PID 2360 wrote to memory of 3008	2360	cmd.exe	WMIC.exe
PID 2360 wrote to memory of 3008	2360	cmd.exe	WMIC.exe
PID 2360 wrote to memory of 3008	2360	cmd.exe	WMIC.exe
PID 2584 wrote to memory of 1660	2584	Windows Defender.exe	cmd.exe
PID 2584 wrote to memory of 1660	2584	Windows Defender.exe	cmd.exe
PID 2584 wrote to memory of 1660	2584	Windows Defender.exe	cmd.exe
PID 1660 wrote to memory of 1680	1660	cmd.exe	bcdedit.exe
PID 1660 wrote to memory of 1680	1660	cmd.exe	bcdedit.exe
PID 1660 wrote to memory of 1680	1660	cmd.exe	bcdedit.exe
PID 1660 wrote to memory of 2240	1660	cmd.exe	bcdedit.exe
PID 1660 wrote to memory of 2240	1660	cmd.exe	bcdedit.exe
PID 1660 wrote to memory of 2240	1660	cmd.exe	bcdedit.exe
PID 2584 wrote to memory of 2424	2584	Windows Defender.exe	cmd.exe
PID 2584 wrote to memory of 2424	2584	Windows Defender.exe	cmd.exe
PID 2584 wrote to memory of 2424	2584	Windows Defender.exe	cmd.exe
PID 2424 wrote to memory of 348	2424	cmd.exe	wbadmin.exe
PID 2424 wrote to memory of 348	2424	cmd.exe	wbadmin.exe
PID 2424 wrote to memory of 348	2424	cmd.exe	wbadmin.exe
PID 2584 wrote to memory of 2612	2584	Windows Defender.exe	NOTEPAD.EXE
PID 2584 wrote to memory of 2612	2584	Windows Defender.exe	NOTEPAD.EXE
PID 2584 wrote to memory of 2612	2584	Windows Defender.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\0f3d700c95b21e5437c0aedb3cacd787ce6701c49180d8d564e4574dffc42190.exe
"C:\Users\Admin\AppData\Local\Temp\0f3d700c95b21e5437c0aedb3cacd787ce6701c49180d8d564e4574dffc42190.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3040

C:\Users\Admin\AppData\Roaming\Windows Defender.exe
"C:\Users\Admin\AppData\Roaming\Windows Defender.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:2584

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:2360

C:\Windows\system32\vssadmin.exe
vssadmin delete shadows /all /quiet
4⤵
- Interacts with shadow copies
PID:3044

C:\Windows\System32\Wbem\WMIC.exe
wmic shadowcopy delete
4⤵
- Suspicious use of AdjustPrivilegeToken
PID:3008

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:1660

C:\Windows\system32\bcdedit.exe
bcdedit /set {default} bootstatuspolicy ignoreallfailures
4⤵
- Modifies boot configuration data using bcdedit
PID:1680

C:\Windows\system32\bcdedit.exe
bcdedit /set {default} recoveryenabled no
4⤵
- Modifies boot configuration data using bcdedit
PID:2240

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
3⤵
- Suspicious use of WriteProcessMemory
PID:2424

C:\Windows\system32\wbadmin.exe
wbadmin delete catalog -quiet
4⤵
- Deletes backup catalog
PID:348

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\傻逼，你被耍了！你的所有文件都被加密！.txt
3⤵
PID:2612

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2156

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2228

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:2432

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:1252

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Windows Management Instrumentation

T1047

Command and Scripting Interpreter

T1059

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

T1112

Direct Volume Access

T1006

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

Query Registry

T1012

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Inhibit System Recovery

T1490

Defacement

T1491

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Roaming\Windows Defender.exe
Filesize
1.9MB

MD5
2c6f8e680a400cb2b5426090ccbdea93

SHA1
47a691c438547b27fac9896f3783026d8be4dbe9

SHA256
0f3d700c95b21e5437c0aedb3cacd787ce6701c49180d8d564e4574dffc42190

SHA512
48a70440e4009c4ab2a913ee3b9dc24b73ab4413cc82f5e8194f1cca87ead356de1de90c461c9109afa5f690cb0c9365f49a5ea83f54b4ad97c4287346237f03

Download Submit
C:\Users\Admin\Documents\傻逼，你被耍了！你的所有文件都被加密！.txt
Filesize
470B

MD5
c83c2b8e368e928c7ab979f7bb44dac4

SHA1
4662ae6c1d2195a178bdeb23141df221181b9fdf

SHA256
d42f2a19a64f644085bb2411b58397f5ce8ff1d85857e9985163138964ea0251

SHA512
599f1cb6d607069544a492ed198fea62e51c5cefeb02ec33843cb63255705a2cf412467814493edf7a920b38ad71c65d8e6bd803b28b2f160e3b0727fc2cba2e

Download Submit
memory/2584-8-0x0000000000EF0000-0x00000000010DE000-memory.dmp

Filesize
1.9MB

Download
memory/2584-9-0x000007FEF5E80000-0x000007FEF686C000-memory.dmp

Filesize
9.9MB

Download
memory/2584-14-0x000007FEF5E80000-0x000007FEF686C000-memory.dmp

Filesize
9.9MB

Download
memory/2584-507-0x000007FEF5E80000-0x000007FEF686C000-memory.dmp

Filesize
9.9MB

Download
memory/3040-0-0x000007FEF5E83000-0x000007FEF5E84000-memory.dmp

Filesize
4KB

Download
memory/3040-1-0x00000000010B0000-0x000000000129E000-memory.dmp

Filesize
1.9MB

Download
memory/3040-2-0x000007FEF5E83000-0x000007FEF5E84000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads