chaos | 8ff8af7b31fe7ed58b2afc1b556c635c2ccdf20bce7ca371897dea490a8b5027

Analysis

max time kernel
121s
max time network
124s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
13-07-2024 09:29

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General

Target

0f18f6547a1c8e86963a9e9f9dd9e6e42bd506de21c034ec884c3b55a789ac57.exe
Size

23KB
MD5

4cc6ec4d961a14c4fc4b45dfe939ca00
SHA1

7a115dcc3ca91877b70de091b122259503d7109f
SHA256

0f18f6547a1c8e86963a9e9f9dd9e6e42bd506de21c034ec884c3b55a789ac57
SHA512

9bcdb453be961b88ae3a85a9d68e8f2e8ea6394e27641a46f4a28c9b56133cf97f5cf74699feab475563f5e9617120dffa944c8d3554d06749071e104cd237fd
SSDEEP

384:m3Mg/bqo2uda2duoiXslkpaDKB+98SJer91CCob5LeU:Uqo2ka2kAkpaDuNGer9pobJeU

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
behavioral28/memory/2752-1-0x0000000001000000-0x000000000100C000-memory.dmp	family_chaos
C:\Users\Admin\AppData\Roaming\Garsomware.exe	family_chaos
behavioral28/memory/2720-7-0x00000000003C0000-0x00000000003CC000-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

1348 bcdedit.exe
1584 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

1760 wbadmin.exe

pid	process
1348	bcdedit.exe
1584	bcdedit.exe

pid	process
1760	wbadmin.exe

Drops startup file 3 IoCs

Processes:

Garsomware.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Garsomware.url	Garsomware.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini	Garsomware.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Garsomware.txt	Garsomware.exe

Executes dropped EXE 1 IoCs

Processes:

Garsomware.exe

pid process

2720 Garsomware.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
2720	Garsomware.exe

Drops desktop.ini file(s) 34 IoCs

Processes:

Garsomware.exe

description	ioc	process
File opened for modification	C:\Users\Admin\Links\desktop.ini	Garsomware.exe
File opened for modification	C:\Users\Admin\Favorites\Links for United States\desktop.ini	Garsomware.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini	Garsomware.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini	Garsomware.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	Garsomware.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	Garsomware.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini	Garsomware.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini	Garsomware.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini	Garsomware.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	Garsomware.exe
File opened for modification	C:\Users\Public\Videos\Sample Videos\desktop.ini	Garsomware.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	Garsomware.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	Garsomware.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	Garsomware.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	Garsomware.exe
File opened for modification	C:\Users\Public\Music\Sample Music\desktop.ini	Garsomware.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	Garsomware.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	Garsomware.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini	Garsomware.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	Garsomware.exe
File opened for modification	C:\Users\Admin\Saved Games\desktop.ini	Garsomware.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	Garsomware.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	Garsomware.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-3294248377-1418901787-4083263181-1000\desktop.ini	Garsomware.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	Garsomware.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini	Garsomware.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	Garsomware.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	Garsomware.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini	Garsomware.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini	Garsomware.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini	Garsomware.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	Garsomware.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	Garsomware.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	Garsomware.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

1148 vssadmin.exe
Opens file in notepad (likely ransom note) 1 IoCs
ransomware

Processes:

NOTEPAD.EXE

pid process

2252 NOTEPAD.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

Garsomware.exe

pid process

2720 Garsomware.exe

pid	process
1148	vssadmin.exe

pid	process
2252	NOTEPAD.EXE

pid	process
2720	Garsomware.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

Processes:

0f18f6547a1c8e86963a9e9f9dd9e6e42bd506de21c034ec884c3b55a789ac57.exeGarsomware.exe

pid	process
2752	0f18f6547a1c8e86963a9e9f9dd9e6e42bd506de21c034ec884c3b55a789ac57.exe
2752	0f18f6547a1c8e86963a9e9f9dd9e6e42bd506de21c034ec884c3b55a789ac57.exe
2752	0f18f6547a1c8e86963a9e9f9dd9e6e42bd506de21c034ec884c3b55a789ac57.exe
2720	Garsomware.exe
2720	Garsomware.exe
2720	Garsomware.exe
2720	Garsomware.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

0f18f6547a1c8e86963a9e9f9dd9e6e42bd506de21c034ec884c3b55a789ac57.exeGarsomware.exevssvc.exeWMIC.exewbengine.exe

description	pid	process
Token: SeDebugPrivilege	2752	0f18f6547a1c8e86963a9e9f9dd9e6e42bd506de21c034ec884c3b55a789ac57.exe
Token: SeDebugPrivilege	2720	Garsomware.exe
Token: SeBackupPrivilege	1152	vssvc.exe
Token: SeRestorePrivilege	1152	vssvc.exe
Token: SeAuditPrivilege	1152	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1776	WMIC.exe
Token: SeSecurityPrivilege	1776	WMIC.exe
Token: SeTakeOwnershipPrivilege	1776	WMIC.exe
Token: SeLoadDriverPrivilege	1776	WMIC.exe
Token: SeSystemProfilePrivilege	1776	WMIC.exe
Token: SeSystemtimePrivilege	1776	WMIC.exe
Token: SeProfSingleProcessPrivilege	1776	WMIC.exe
Token: SeIncBasePriorityPrivilege	1776	WMIC.exe
Token: SeCreatePagefilePrivilege	1776	WMIC.exe
Token: SeBackupPrivilege	1776	WMIC.exe
Token: SeRestorePrivilege	1776	WMIC.exe
Token: SeShutdownPrivilege	1776	WMIC.exe
Token: SeDebugPrivilege	1776	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1776	WMIC.exe
Token: SeRemoteShutdownPrivilege	1776	WMIC.exe
Token: SeUndockPrivilege	1776	WMIC.exe
Token: SeManageVolumePrivilege	1776	WMIC.exe
Token: 33	1776	WMIC.exe
Token: 34	1776	WMIC.exe
Token: 35	1776	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1776	WMIC.exe
Token: SeSecurityPrivilege	1776	WMIC.exe
Token: SeTakeOwnershipPrivilege	1776	WMIC.exe
Token: SeLoadDriverPrivilege	1776	WMIC.exe
Token: SeSystemProfilePrivilege	1776	WMIC.exe
Token: SeSystemtimePrivilege	1776	WMIC.exe
Token: SeProfSingleProcessPrivilege	1776	WMIC.exe
Token: SeIncBasePriorityPrivilege	1776	WMIC.exe
Token: SeCreatePagefilePrivilege	1776	WMIC.exe
Token: SeBackupPrivilege	1776	WMIC.exe
Token: SeRestorePrivilege	1776	WMIC.exe
Token: SeShutdownPrivilege	1776	WMIC.exe
Token: SeDebugPrivilege	1776	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1776	WMIC.exe
Token: SeRemoteShutdownPrivilege	1776	WMIC.exe
Token: SeUndockPrivilege	1776	WMIC.exe
Token: SeManageVolumePrivilege	1776	WMIC.exe
Token: 33	1776	WMIC.exe
Token: 34	1776	WMIC.exe
Token: 35	1776	WMIC.exe
Token: SeBackupPrivilege	1660	wbengine.exe
Token: SeRestorePrivilege	1660	wbengine.exe
Token: SeSecurityPrivilege	1660	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

0f18f6547a1c8e86963a9e9f9dd9e6e42bd506de21c034ec884c3b55a789ac57.exeGarsomware.execmd.execmd.execmd.exe

description	pid	process	target process
PID 2752 wrote to memory of 2720	2752	0f18f6547a1c8e86963a9e9f9dd9e6e42bd506de21c034ec884c3b55a789ac57.exe	Garsomware.exe
PID 2752 wrote to memory of 2720	2752	0f18f6547a1c8e86963a9e9f9dd9e6e42bd506de21c034ec884c3b55a789ac57.exe	Garsomware.exe
PID 2752 wrote to memory of 2720	2752	0f18f6547a1c8e86963a9e9f9dd9e6e42bd506de21c034ec884c3b55a789ac57.exe	Garsomware.exe
PID 2720 wrote to memory of 2580	2720	Garsomware.exe	cmd.exe
PID 2720 wrote to memory of 2580	2720	Garsomware.exe	cmd.exe
PID 2720 wrote to memory of 2580	2720	Garsomware.exe	cmd.exe
PID 2580 wrote to memory of 1148	2580	cmd.exe	vssadmin.exe
PID 2580 wrote to memory of 1148	2580	cmd.exe	vssadmin.exe
PID 2580 wrote to memory of 1148	2580	cmd.exe	vssadmin.exe
PID 2580 wrote to memory of 1776	2580	cmd.exe	WMIC.exe
PID 2580 wrote to memory of 1776	2580	cmd.exe	WMIC.exe
PID 2580 wrote to memory of 1776	2580	cmd.exe	WMIC.exe
PID 2720 wrote to memory of 712	2720	Garsomware.exe	cmd.exe
PID 2720 wrote to memory of 712	2720	Garsomware.exe	cmd.exe
PID 2720 wrote to memory of 712	2720	Garsomware.exe	cmd.exe
PID 712 wrote to memory of 1348	712	cmd.exe	bcdedit.exe
PID 712 wrote to memory of 1348	712	cmd.exe	bcdedit.exe
PID 712 wrote to memory of 1348	712	cmd.exe	bcdedit.exe
PID 712 wrote to memory of 1584	712	cmd.exe	bcdedit.exe
PID 712 wrote to memory of 1584	712	cmd.exe	bcdedit.exe
PID 712 wrote to memory of 1584	712	cmd.exe	bcdedit.exe
PID 2720 wrote to memory of 2532	2720	Garsomware.exe	cmd.exe
PID 2720 wrote to memory of 2532	2720	Garsomware.exe	cmd.exe
PID 2720 wrote to memory of 2532	2720	Garsomware.exe	cmd.exe
PID 2532 wrote to memory of 1760	2532	cmd.exe	wbadmin.exe
PID 2532 wrote to memory of 1760	2532	cmd.exe	wbadmin.exe
PID 2532 wrote to memory of 1760	2532	cmd.exe	wbadmin.exe
PID 2720 wrote to memory of 2252	2720	Garsomware.exe	NOTEPAD.EXE
PID 2720 wrote to memory of 2252	2720	Garsomware.exe	NOTEPAD.EXE
PID 2720 wrote to memory of 2252	2720	Garsomware.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\0f18f6547a1c8e86963a9e9f9dd9e6e42bd506de21c034ec884c3b55a789ac57.exe
"C:\Users\Admin\AppData\Local\Temp\0f18f6547a1c8e86963a9e9f9dd9e6e42bd506de21c034ec884c3b55a789ac57.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2752

C:\Users\Admin\AppData\Roaming\Garsomware.exe
"C:\Users\Admin\AppData\Roaming\Garsomware.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: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:2580

C:\Windows\system32\vssadmin.exe
vssadmin delete shadows /all /quiet
4⤵
- Interacts with shadow copies
PID:1148

C:\Windows\System32\Wbem\WMIC.exe
wmic shadowcopy delete
4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1776

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:712

C:\Windows\system32\bcdedit.exe
bcdedit /set {default} bootstatuspolicy ignoreallfailures
4⤵
- Modifies boot configuration data using bcdedit
PID:1348

C:\Windows\system32\bcdedit.exe
bcdedit /set {default} recoveryenabled no
4⤵
- Modifies boot configuration data using bcdedit
PID:1584

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
3⤵
- Suspicious use of WriteProcessMemory
PID:2532

C:\Windows\system32\wbadmin.exe
wbadmin delete catalog -quiet
4⤵
- Deletes backup catalog
PID:1760

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\Garsomware.txt
3⤵
- Opens file in notepad (likely ransom note)
PID:2252

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1152

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1660

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:888

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:1728

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

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

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Roaming\Garsomware.exe
Filesize
23KB

MD5
4cc6ec4d961a14c4fc4b45dfe939ca00

SHA1
7a115dcc3ca91877b70de091b122259503d7109f

SHA256
0f18f6547a1c8e86963a9e9f9dd9e6e42bd506de21c034ec884c3b55a789ac57

SHA512
9bcdb453be961b88ae3a85a9d68e8f2e8ea6394e27641a46f4a28c9b56133cf97f5cf74699feab475563f5e9617120dffa944c8d3554d06749071e104cd237fd

Download Submit
C:\Users\Admin\Documents\Garsomware.txt
Filesize
772B

MD5
99af09472bd282b52375d6975efbd348

SHA1
aad9c614d344e764c12b1fb23c183f54be45961e

SHA256
c5850864ce7ea579386398d350e762a8b7a7d11d964d38cbe6c54adc6844989b

SHA512
c036a9058080deb37346fb1dd4634a140744d561226e0cf7b026ec95ae2ea135e04c0a6e6d439e237eaa1ce32576940f4452139476649a706e2d9039b4380548

Download Submit
memory/2720-7-0x00000000003C0000-0x00000000003CC000-memory.dmp

Filesize
48KB

Download
memory/2720-19-0x000007FEF5A60000-0x000007FEF644C000-memory.dmp

Filesize
9.9MB

Download
memory/2720-28-0x000007FEF5A60000-0x000007FEF644C000-memory.dmp

Filesize
9.9MB

Download
memory/2720-496-0x000007FEF5A60000-0x000007FEF644C000-memory.dmp

Filesize
9.9MB

Download
memory/2752-0-0x000007FEF5A63000-0x000007FEF5A64000-memory.dmp

Filesize
4KB

Download
memory/2752-1-0x0000000001000000-0x000000000100C000-memory.dmp

Filesize
48KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads