chaos | 2dad9fdc3ba592a020bd90c0fc11feeb1f9cf228c9d0c1c647fdbf8a3d7064ce

Analysis

max time kernel
23s
max time network
16s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
19-11-2024 02:21

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General

Target

testttsa.exe
Size

104KB
MD5

cfbf0711aaec84a0a3e73b2ccb8dc9bf
SHA1

ec87d3a01063b5e27b09bbd5f024c43bd4a92cf3
SHA256

2dad9fdc3ba592a020bd90c0fc11feeb1f9cf228c9d0c1c647fdbf8a3d7064ce
SHA512

ef032094b3e4b308a2acc974555230f0265afc8ff0d580a6e0f5352e3cc5b0a9884d8de851ac495706da48c8969afbc81d39e41087f714ba0bc62a71f70a1bd2
SSDEEP

1536:po2GCqr9IphA2AZyCeoetR8cGsgzCtRyEc1CvHSHyIBCHVF0suFf9:poVCqr9ILA2t/CZb3z1CvHSHyLm9

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
behavioral1/memory/3064-1-0x0000000000AD0000-0x0000000000AEE000-memory.dmp	family_chaos
behavioral1/files/0x000c00000001226a-6.dat	family_chaos
behavioral1/memory/2700-8-0x0000000001000000-0x000000000101E000-memory.dmp	family_chaos

Chaos 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
2916	bcdedit.exe
2988	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
664	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\FORNATHAN.txt	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2700	svchost.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

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\AppData\Roaming\Microsoft\Windows\Recent\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\Contacts\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\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\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\Libraries\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\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\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\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\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\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Music\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\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\Sample Videos\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-1846800975-3917212583-2893086201-1000\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\Accessories\Accessibility\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-1-5-21-1846800975-3917212583-2893086201-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1g31lohmm.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
2872	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1116	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2700	svchost.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3064	testttsa.exe
3064	testttsa.exe
3064	testttsa.exe
2700	svchost.exe
2700	svchost.exe
2700	svchost.exe
2700	svchost.exe
2700	svchost.exe
2700	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	3064	testttsa.exe
Token: SeDebugPrivilege	2700	svchost.exe
Token: SeBackupPrivilege	2896	vssvc.exe
Token: SeRestorePrivilege	2896	vssvc.exe
Token: SeAuditPrivilege	2896	vssvc.exe
Token: SeIncreaseQuotaPrivilege	652	WMIC.exe
Token: SeSecurityPrivilege	652	WMIC.exe
Token: SeTakeOwnershipPrivilege	652	WMIC.exe
Token: SeLoadDriverPrivilege	652	WMIC.exe
Token: SeSystemProfilePrivilege	652	WMIC.exe
Token: SeSystemtimePrivilege	652	WMIC.exe
Token: SeProfSingleProcessPrivilege	652	WMIC.exe
Token: SeIncBasePriorityPrivilege	652	WMIC.exe
Token: SeCreatePagefilePrivilege	652	WMIC.exe
Token: SeBackupPrivilege	652	WMIC.exe
Token: SeRestorePrivilege	652	WMIC.exe
Token: SeShutdownPrivilege	652	WMIC.exe
Token: SeDebugPrivilege	652	WMIC.exe
Token: SeSystemEnvironmentPrivilege	652	WMIC.exe
Token: SeRemoteShutdownPrivilege	652	WMIC.exe
Token: SeUndockPrivilege	652	WMIC.exe
Token: SeManageVolumePrivilege	652	WMIC.exe
Token: 33	652	WMIC.exe
Token: 34	652	WMIC.exe
Token: 35	652	WMIC.exe
Token: SeIncreaseQuotaPrivilege	652	WMIC.exe
Token: SeSecurityPrivilege	652	WMIC.exe
Token: SeTakeOwnershipPrivilege	652	WMIC.exe
Token: SeLoadDriverPrivilege	652	WMIC.exe
Token: SeSystemProfilePrivilege	652	WMIC.exe
Token: SeSystemtimePrivilege	652	WMIC.exe
Token: SeProfSingleProcessPrivilege	652	WMIC.exe
Token: SeIncBasePriorityPrivilege	652	WMIC.exe
Token: SeCreatePagefilePrivilege	652	WMIC.exe
Token: SeBackupPrivilege	652	WMIC.exe
Token: SeRestorePrivilege	652	WMIC.exe
Token: SeShutdownPrivilege	652	WMIC.exe
Token: SeDebugPrivilege	652	WMIC.exe
Token: SeSystemEnvironmentPrivilege	652	WMIC.exe
Token: SeRemoteShutdownPrivilege	652	WMIC.exe
Token: SeUndockPrivilege	652	WMIC.exe
Token: SeManageVolumePrivilege	652	WMIC.exe
Token: 33	652	WMIC.exe
Token: 34	652	WMIC.exe
Token: 35	652	WMIC.exe
Token: SeBackupPrivilege	2504	wbengine.exe
Token: SeRestorePrivilege	2504	wbengine.exe
Token: SeSecurityPrivilege	2504	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3064 wrote to memory of 2700	3064	testttsa.exe	30
PID 3064 wrote to memory of 2700	3064	testttsa.exe	30
PID 3064 wrote to memory of 2700	3064	testttsa.exe	30
PID 2700 wrote to memory of 2308	2700	svchost.exe	32
PID 2700 wrote to memory of 2308	2700	svchost.exe	32
PID 2700 wrote to memory of 2308	2700	svchost.exe	32
PID 2308 wrote to memory of 2872	2308	cmd.exe	34
PID 2308 wrote to memory of 2872	2308	cmd.exe	34
PID 2308 wrote to memory of 2872	2308	cmd.exe	34
PID 2308 wrote to memory of 652	2308	cmd.exe	37
PID 2308 wrote to memory of 652	2308	cmd.exe	37
PID 2308 wrote to memory of 652	2308	cmd.exe	37
PID 2700 wrote to memory of 2040	2700	svchost.exe	39
PID 2700 wrote to memory of 2040	2700	svchost.exe	39
PID 2700 wrote to memory of 2040	2700	svchost.exe	39
PID 2040 wrote to memory of 2916	2040	cmd.exe	41
PID 2040 wrote to memory of 2916	2040	cmd.exe	41
PID 2040 wrote to memory of 2916	2040	cmd.exe	41
PID 2040 wrote to memory of 2988	2040	cmd.exe	42
PID 2040 wrote to memory of 2988	2040	cmd.exe	42
PID 2040 wrote to memory of 2988	2040	cmd.exe	42
PID 2700 wrote to memory of 2100	2700	svchost.exe	43
PID 2700 wrote to memory of 2100	2700	svchost.exe	43
PID 2700 wrote to memory of 2100	2700	svchost.exe	43
PID 2100 wrote to memory of 664	2100	cmd.exe	45
PID 2100 wrote to memory of 664	2100	cmd.exe	45
PID 2100 wrote to memory of 664	2100	cmd.exe	45
PID 2700 wrote to memory of 1116	2700	svchost.exe	49
PID 2700 wrote to memory of 1116	2700	svchost.exe	49
PID 2700 wrote to memory of 1116	2700	svchost.exe	49

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\testttsa.exe
"C:\Users\Admin\AppData\Local\Temp\testttsa.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3064
- 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:2700
- - 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:2308
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2872
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:652
- - 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:2040
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2916
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2988
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2100
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:664
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\FORNATHAN.txt
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:1116

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2896

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2504

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:948

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:1064

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

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

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
104KB

MD5
cfbf0711aaec84a0a3e73b2ccb8dc9bf

SHA1
ec87d3a01063b5e27b09bbd5f024c43bd4a92cf3

SHA256
2dad9fdc3ba592a020bd90c0fc11feeb1f9cf228c9d0c1c647fdbf8a3d7064ce

SHA512
ef032094b3e4b308a2acc974555230f0265afc8ff0d580a6e0f5352e3cc5b0a9884d8de851ac495706da48c8969afbc81d39e41087f714ba0bc62a71f70a1bd2

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

Filesize
1KB

MD5
2904ac0223c2a9663f8e3948804841a6

SHA1
17e075cb79622bc6aa80e61f825daf9eee14fb86

SHA256
e1400c81a98135914ca603de87843a57347f19b9a20c4df650b54ec2db779aa0

SHA512
918745eebed438480198aa15c275fd7898d8bd5d0f7d65210cafaab4eecd2257df2a63e9028de508df408807670ab296db344a7d54b20bf5331514d3e28c34ed

Download Submit
memory/2700-8-0x0000000001000000-0x000000000101E000-memory.dmp

Filesize
120KB

Download
memory/2700-10-0x000007FEF5DB0000-0x000007FEF679C000-memory.dmp

Filesize
9.9MB

Download
memory/2700-11-0x000007FEF5DB0000-0x000007FEF679C000-memory.dmp

Filesize
9.9MB

Download
memory/2700-456-0x000007FEF5DB0000-0x000007FEF679C000-memory.dmp

Filesize
9.9MB

Download
memory/3064-0-0x000007FEF5DB3000-0x000007FEF5DB4000-memory.dmp

Filesize
4KB

Download
memory/3064-1-0x0000000000AD0000-0x0000000000AEE000-memory.dmp

Filesize
120KB

Download
memory/3064-2-0x000007FEF5DB3000-0x000007FEF5DB4000-memory.dmp

Filesize
4KB

Download