chaos | d45f6608d6afc48189e0ef63e489f9034cd3e864a95d634640df53ad302b42b3

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
25/11/2024, 16:43

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General

Target
PepperX (2).exe
Size 81KB
Sample241125-t8necasnar
SHA256 d45f6608d6afc48189e0ef63e489f9034cd3e864a95d634640df53ad302b42b3
MD5 b950502f66e5c9b058f340ab24b3b5ab
SHA1 fad3abdf88ef351b25ef339a6d1a082d8516b9e9
SHA512 132235bf2ad67b8b22428e716a27d35b024c38ca09e770237688b4d4e88eb4f44a98b267c068f422aa75a6050bfff3db6073bc71619b5bb85fb76ddf9833a5f9
SSDEEP 1536:w3kIZ4nmr9iW2wU3gUvpdO0J//E2dLEgtMRloDpU:w3kI4nmr9iY7MhdHMRl6pU
MD5 SHA1 SHA512 SSDEEP

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
behavioral2/memory/3300-1-0x00000000000F0000-0x000000000010A000-memory.dmp	family_chaos
behavioral2/files/0x0008000000023c43-6.dat	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
4516	bcdedit.exe
3596	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
4712	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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	svchost.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	PepperX (2).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
3512	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\Public\Music\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\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\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\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-2045521122-590294423-3465680274-1000\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\Start Menu\Programs\System Tools\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\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\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\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\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\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\Admin\AppData\Roaming\Microsoft\Windows\AccountPictures\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	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\Admin\Documents\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\Pictures\Saved Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\OneDrive\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\Recent\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\6lkw6lm8m.jpg"	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 value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName	vds.exe
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_WDC&PROD_WDS100T2B0A\4&215468A5&0&000000	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
3692	vssadmin.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000_Classes\Local Settings	svchost.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
4544	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3512	svchost.exe

Suspicious behavior: EnumeratesProcesses 45 IoCs

pid	Process
3300	PepperX (2).exe
3300	PepperX (2).exe
3300	PepperX (2).exe
3300	PepperX (2).exe
3300	PepperX (2).exe
3300	PepperX (2).exe
3300	PepperX (2).exe
3300	PepperX (2).exe
3300	PepperX (2).exe
3300	PepperX (2).exe
3300	PepperX (2).exe
3300	PepperX (2).exe
3300	PepperX (2).exe
3300	PepperX (2).exe
3300	PepperX (2).exe
3300	PepperX (2).exe
3300	PepperX (2).exe
3300	PepperX (2).exe
3300	PepperX (2).exe
3300	PepperX (2).exe
3300	PepperX (2).exe
3512	svchost.exe
3512	svchost.exe
3512	svchost.exe
3512	svchost.exe
3512	svchost.exe
3512	svchost.exe
3512	svchost.exe
3512	svchost.exe
3512	svchost.exe
3512	svchost.exe
3512	svchost.exe
3512	svchost.exe
3512	svchost.exe
3512	svchost.exe
3512	svchost.exe
3512	svchost.exe
3512	svchost.exe
3512	svchost.exe
3512	svchost.exe
3512	svchost.exe
3512	svchost.exe
3512	svchost.exe
3512	svchost.exe
3512	svchost.exe

Suspicious use of AdjustPrivilegeToken 50 IoCs

description	pid	Process
Token: SeDebugPrivilege	3300	PepperX (2).exe
Token: SeDebugPrivilege	3512	svchost.exe
Token: SeBackupPrivilege	3976	vssvc.exe
Token: SeRestorePrivilege	3976	vssvc.exe
Token: SeAuditPrivilege	3976	vssvc.exe
Token: SeIncreaseQuotaPrivilege	224	WMIC.exe
Token: SeSecurityPrivilege	224	WMIC.exe
Token: SeTakeOwnershipPrivilege	224	WMIC.exe
Token: SeLoadDriverPrivilege	224	WMIC.exe
Token: SeSystemProfilePrivilege	224	WMIC.exe
Token: SeSystemtimePrivilege	224	WMIC.exe
Token: SeProfSingleProcessPrivilege	224	WMIC.exe
Token: SeIncBasePriorityPrivilege	224	WMIC.exe
Token: SeCreatePagefilePrivilege	224	WMIC.exe
Token: SeBackupPrivilege	224	WMIC.exe
Token: SeRestorePrivilege	224	WMIC.exe
Token: SeShutdownPrivilege	224	WMIC.exe
Token: SeDebugPrivilege	224	WMIC.exe
Token: SeSystemEnvironmentPrivilege	224	WMIC.exe
Token: SeRemoteShutdownPrivilege	224	WMIC.exe
Token: SeUndockPrivilege	224	WMIC.exe
Token: SeManageVolumePrivilege	224	WMIC.exe
Token: 33	224	WMIC.exe
Token: 34	224	WMIC.exe
Token: 35	224	WMIC.exe
Token: 36	224	WMIC.exe
Token: SeIncreaseQuotaPrivilege	224	WMIC.exe
Token: SeSecurityPrivilege	224	WMIC.exe
Token: SeTakeOwnershipPrivilege	224	WMIC.exe
Token: SeLoadDriverPrivilege	224	WMIC.exe
Token: SeSystemProfilePrivilege	224	WMIC.exe
Token: SeSystemtimePrivilege	224	WMIC.exe
Token: SeProfSingleProcessPrivilege	224	WMIC.exe
Token: SeIncBasePriorityPrivilege	224	WMIC.exe
Token: SeCreatePagefilePrivilege	224	WMIC.exe
Token: SeBackupPrivilege	224	WMIC.exe
Token: SeRestorePrivilege	224	WMIC.exe
Token: SeShutdownPrivilege	224	WMIC.exe
Token: SeDebugPrivilege	224	WMIC.exe
Token: SeSystemEnvironmentPrivilege	224	WMIC.exe
Token: SeRemoteShutdownPrivilege	224	WMIC.exe
Token: SeUndockPrivilege	224	WMIC.exe
Token: SeManageVolumePrivilege	224	WMIC.exe
Token: 33	224	WMIC.exe
Token: 34	224	WMIC.exe
Token: 35	224	WMIC.exe
Token: 36	224	WMIC.exe
Token: SeBackupPrivilege	732	wbengine.exe
Token: SeRestorePrivilege	732	wbengine.exe
Token: SeSecurityPrivilege	732	wbengine.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4544	NOTEPAD.EXE

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 3300 wrote to memory of 3512	3300	PepperX (2).exe	84
PID 3300 wrote to memory of 3512	3300	PepperX (2).exe	84
PID 3512 wrote to memory of 2660	3512	svchost.exe	87
PID 3512 wrote to memory of 2660	3512	svchost.exe	87
PID 2660 wrote to memory of 3692	2660	cmd.exe	90
PID 2660 wrote to memory of 3692	2660	cmd.exe	90
PID 2660 wrote to memory of 224	2660	cmd.exe	95
PID 2660 wrote to memory of 224	2660	cmd.exe	95
PID 3512 wrote to memory of 2300	3512	svchost.exe	96
PID 3512 wrote to memory of 2300	3512	svchost.exe	96
PID 2300 wrote to memory of 4516	2300	cmd.exe	98
PID 2300 wrote to memory of 4516	2300	cmd.exe	98
PID 2300 wrote to memory of 3596	2300	cmd.exe	99
PID 2300 wrote to memory of 3596	2300	cmd.exe	99
PID 3512 wrote to memory of 1080	3512	svchost.exe	100
PID 3512 wrote to memory of 1080	3512	svchost.exe	100
PID 1080 wrote to memory of 4712	1080	cmd.exe	102
PID 1080 wrote to memory of 4712	1080	cmd.exe	102
PID 3512 wrote to memory of 4544	3512	svchost.exe	107
PID 3512 wrote to memory of 4544	3512	svchost.exe	107

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\PepperX (2).exe
"C:\Users\Admin\AppData\Local\Temp\PepperX (2).exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3300
- 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)
  - Sets desktop wallpaper using registry
  - Modifies registry class
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3512
- - 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:2660
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:3692
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:224
- - 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:2300
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:4516
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:3596
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1080
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:4712
- - 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)
    - Suspicious use of FindShellTrayWindow
    PID:4544

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3976

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:732

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:3732

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
- Checks SCSI registry key(s)
PID:4968

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

Peripheral Device Discovery

T1120

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

svchost.exe

Path C:\Users\Admin\AppData\Roaming\svchost.exe
Size 81KB
SHA256 d45f6608d6afc48189e0ef63e489f9034cd3e864a95d634640df53ad302b42b3
MD5 b950502f66e5c9b058f340ab24b3b5ab
SHA1 fad3abdf88ef351b25ef339a6d1a082d8516b9e9
SHA512 132235bf2ad67b8b22428e716a27d35b024c38ca09e770237688b4d4e88eb4f44a98b267c068f422aa75a6050bfff3db6073bc71619b5bb85fb76ddf9833a5f9
SSDEEP 1536:w3kIZ4nmr9iW2wU3gUvpdO0J//E2dLEgtMRloDpU:w3kI4nmr9iY7MhdHMRl6pU
MD5 SHA1 SHA512 SSDEEP

Submit Download

read_it.txt

Path C:\Users\Admin\Desktop\read_it.txt
Size 778B
SHA256 c5f2d8ef689c1af8b9d9f9908beb8e9e16abe5338bc569f4998d6f5e45b95d0f
MD5 e476ae4628a4272384255b6003b1b5b3
SHA1 7bd05141ec08774a5c0ae500e0a5d9806be681f4
SHA512 a9ac31705fb99985f1b241c5d06447c6870dd5f203bfc43056c7d2c92e6f0af9711395e42707253ec98730f1e765966359ec061f1deee6529df69fe4354a5d8e
MD5 SHA1 SHA512

Submit Download

memory/3300-0-0x00007FFF30E43000-0x00007FFF30E45000-memory.dmp

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memory/3300-1-0x00000000000F0000-0x000000000010A000-memory.dmp

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memory/3512-14-0x00007FFF30E40000-0x00007FFF31901000-memory.dmp

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memory/3512-69-0x00007FFF30E40000-0x00007FFF31901000-memory.dmp

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