chaos | d45f6608d6afc48189e0ef63e489f9034cd3e864a95d634640df53ad302b42b3

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
25-11-2024 15:43

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General

Target

PepperX1.exe
Size

81KB
MD5

b950502f66e5c9b058f340ab24b3b5ab
SHA1

fad3abdf88ef351b25ef339a6d1a082d8516b9e9
SHA256

d45f6608d6afc48189e0ef63e489f9034cd3e864a95d634640df53ad302b42b3
SHA512

132235bf2ad67b8b22428e716a27d35b024c38ca09e770237688b4d4e88eb4f44a98b267c068f422aa75a6050bfff3db6073bc71619b5bb85fb76ddf9833a5f9
SSDEEP

1536:w3kIZ4nmr9iW2wU3gUvpdO0J//E2dLEgtMRloDpU:w3kI4nmr9iY7MhdHMRl6pU

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/2552-1-0x0000000000E30000-0x0000000000E4A000-memory.dmp	family_chaos
behavioral1/files/0x000b000000012263-5.dat	family_chaos
behavioral1/memory/2108-7-0x0000000000B20000-0x0000000000B3A000-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
1576	bcdedit.exe
1168	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
1436	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_it.txt	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2108	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\Internet Explorer\Quick Launch\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\Links\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\Recent\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\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\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-1-5-21-2039016743-699959520-214465309-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links\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\Internet Explorer\Quick Launch\User Pinned\TaskBar\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\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\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\Music\Sample Music\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\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\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\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\SendTo\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\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-1-5-21-2039016743-699959520-214465309-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\mzywpsdoe.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
1800	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2588	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2108	svchost.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2552	PepperX1.exe
2552	PepperX1.exe
2552	PepperX1.exe
2108	svchost.exe
2108	svchost.exe
2108	svchost.exe
2108	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2552	PepperX1.exe
Token: SeDebugPrivilege	2108	svchost.exe
Token: SeBackupPrivilege	1968	vssvc.exe
Token: SeRestorePrivilege	1968	vssvc.exe
Token: SeAuditPrivilege	1968	vssvc.exe
Token: SeIncreaseQuotaPrivilege	2500	WMIC.exe
Token: SeSecurityPrivilege	2500	WMIC.exe
Token: SeTakeOwnershipPrivilege	2500	WMIC.exe
Token: SeLoadDriverPrivilege	2500	WMIC.exe
Token: SeSystemProfilePrivilege	2500	WMIC.exe
Token: SeSystemtimePrivilege	2500	WMIC.exe
Token: SeProfSingleProcessPrivilege	2500	WMIC.exe
Token: SeIncBasePriorityPrivilege	2500	WMIC.exe
Token: SeCreatePagefilePrivilege	2500	WMIC.exe
Token: SeBackupPrivilege	2500	WMIC.exe
Token: SeRestorePrivilege	2500	WMIC.exe
Token: SeShutdownPrivilege	2500	WMIC.exe
Token: SeDebugPrivilege	2500	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2500	WMIC.exe
Token: SeRemoteShutdownPrivilege	2500	WMIC.exe
Token: SeUndockPrivilege	2500	WMIC.exe
Token: SeManageVolumePrivilege	2500	WMIC.exe
Token: 33	2500	WMIC.exe
Token: 34	2500	WMIC.exe
Token: 35	2500	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2500	WMIC.exe
Token: SeSecurityPrivilege	2500	WMIC.exe
Token: SeTakeOwnershipPrivilege	2500	WMIC.exe
Token: SeLoadDriverPrivilege	2500	WMIC.exe
Token: SeSystemProfilePrivilege	2500	WMIC.exe
Token: SeSystemtimePrivilege	2500	WMIC.exe
Token: SeProfSingleProcessPrivilege	2500	WMIC.exe
Token: SeIncBasePriorityPrivilege	2500	WMIC.exe
Token: SeCreatePagefilePrivilege	2500	WMIC.exe
Token: SeBackupPrivilege	2500	WMIC.exe
Token: SeRestorePrivilege	2500	WMIC.exe
Token: SeShutdownPrivilege	2500	WMIC.exe
Token: SeDebugPrivilege	2500	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2500	WMIC.exe
Token: SeRemoteShutdownPrivilege	2500	WMIC.exe
Token: SeUndockPrivilege	2500	WMIC.exe
Token: SeManageVolumePrivilege	2500	WMIC.exe
Token: 33	2500	WMIC.exe
Token: 34	2500	WMIC.exe
Token: 35	2500	WMIC.exe
Token: SeBackupPrivilege	2204	wbengine.exe
Token: SeRestorePrivilege	2204	wbengine.exe
Token: SeSecurityPrivilege	2204	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2552 wrote to memory of 2108	2552	PepperX1.exe	30
PID 2552 wrote to memory of 2108	2552	PepperX1.exe	30
PID 2552 wrote to memory of 2108	2552	PepperX1.exe	30
PID 2108 wrote to memory of 2960	2108	svchost.exe	31
PID 2108 wrote to memory of 2960	2108	svchost.exe	31
PID 2108 wrote to memory of 2960	2108	svchost.exe	31
PID 2960 wrote to memory of 1800	2960	cmd.exe	33
PID 2960 wrote to memory of 1800	2960	cmd.exe	33
PID 2960 wrote to memory of 1800	2960	cmd.exe	33
PID 2960 wrote to memory of 2500	2960	cmd.exe	37
PID 2960 wrote to memory of 2500	2960	cmd.exe	37
PID 2960 wrote to memory of 2500	2960	cmd.exe	37
PID 2108 wrote to memory of 2024	2108	svchost.exe	39
PID 2108 wrote to memory of 2024	2108	svchost.exe	39
PID 2108 wrote to memory of 2024	2108	svchost.exe	39
PID 2024 wrote to memory of 1576	2024	cmd.exe	41
PID 2024 wrote to memory of 1576	2024	cmd.exe	41
PID 2024 wrote to memory of 1576	2024	cmd.exe	41
PID 2024 wrote to memory of 1168	2024	cmd.exe	42
PID 2024 wrote to memory of 1168	2024	cmd.exe	42
PID 2024 wrote to memory of 1168	2024	cmd.exe	42
PID 2108 wrote to memory of 1580	2108	svchost.exe	43
PID 2108 wrote to memory of 1580	2108	svchost.exe	43
PID 2108 wrote to memory of 1580	2108	svchost.exe	43
PID 1580 wrote to memory of 1436	1580	cmd.exe	45
PID 1580 wrote to memory of 1436	1580	cmd.exe	45
PID 1580 wrote to memory of 1436	1580	cmd.exe	45
PID 2108 wrote to memory of 2588	2108	svchost.exe	49
PID 2108 wrote to memory of 2588	2108	svchost.exe	49
PID 2108 wrote to memory of 2588	2108	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\PepperX1.exe
"C:\Users\Admin\AppData\Local\Temp\PepperX1.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2552
- 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:2108
- - 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:2960
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:1800
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2500
- - 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:2024
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1576
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1168
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1580
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:1436
- - 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)
    PID:2588

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1968

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2204

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:2196

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:2952

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
81KB

MD5
b950502f66e5c9b058f340ab24b3b5ab

SHA1
fad3abdf88ef351b25ef339a6d1a082d8516b9e9

SHA256
d45f6608d6afc48189e0ef63e489f9034cd3e864a95d634640df53ad302b42b3

SHA512
132235bf2ad67b8b22428e716a27d35b024c38ca09e770237688b4d4e88eb4f44a98b267c068f422aa75a6050bfff3db6073bc71619b5bb85fb76ddf9833a5f9

Download Submit
C:\Users\Admin\Desktop\read_it.txt

Filesize
778B

MD5
e476ae4628a4272384255b6003b1b5b3

SHA1
7bd05141ec08774a5c0ae500e0a5d9806be681f4

SHA256
c5f2d8ef689c1af8b9d9f9908beb8e9e16abe5338bc569f4998d6f5e45b95d0f

SHA512
a9ac31705fb99985f1b241c5d06447c6870dd5f203bfc43056c7d2c92e6f0af9711395e42707253ec98730f1e765966359ec061f1deee6529df69fe4354a5d8e

Download Submit
memory/2108-7-0x0000000000B20000-0x0000000000B3A000-memory.dmp

Filesize
104KB

Download
memory/2108-9-0x000007FEF6170000-0x000007FEF6B5C000-memory.dmp

Filesize
9.9MB

Download
memory/2108-74-0x000007FEF6170000-0x000007FEF6B5C000-memory.dmp

Filesize
9.9MB

Download
memory/2108-75-0x000007FEF6170000-0x000007FEF6B5C000-memory.dmp

Filesize
9.9MB

Download
memory/2552-0-0x000007FEF6173000-0x000007FEF6174000-memory.dmp

Filesize
4KB

Download
memory/2552-1-0x0000000000E30000-0x0000000000E4A000-memory.dmp

Filesize
104KB

Download