Malware Analysis Report

2024-08-06 16:11

Sample ID 240622-xaj6tatcml
Target Chaos Ransomware Builder v4.zip
SHA256 7e007c64fc914f026a69878c354a4efea39b51777d9c4f1a5062dd661ec60a95
Tags
chaos ransomware
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

7e007c64fc914f026a69878c354a4efea39b51777d9c4f1a5062dd661ec60a95

Threat Level: Known bad

The file Chaos Ransomware Builder v4.zip was found to be: Known bad.

Malicious Activity Summary

chaos ransomware

Chaos

Chaos Ransomware

Chaos family

Unsigned PE

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious behavior: EnumeratesProcesses

Modifies registry class

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Privilege Escalation
TA0004
Defense Evasion
TA0005
Credential Access
TA0006
Discovery
TA0007
System Information Discovery
T1082
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-22 18:38

Signatures

Chaos Ransomware

Description Indicator Process Target
N/A N/A N/A N/A

Chaos family

chaos

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-22 18:38

Reported

2024-06-22 18:56

Platform

win7-20231129-en

Max time kernel

837s

Max time network

837s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe"

Signatures

Chaos

ransomware chaos

Chaos Ransomware

Description Indicator Process Target
N/A N/A N/A N/A

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC} C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
Key created \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
Key created \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1 C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_FolderType = "{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}" C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_TopViewVersion = "0" C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
Set value (data) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = ffffffff C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
Key created \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
Key created \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\FFlags = "1092616257" C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
Key created \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_Classes\Local Settings C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
Key created \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
Key created \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
Set value (data) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\IconSize = "16" C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
Set value (data) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\ColInfo = 00000000000000000000000000000000fddfdffd100000000000000000000000040000001800000030f125b7ef471a10a5f102608c9eebac0a0000001001000030f125b7ef471a10a5f102608c9eebac0e0000007800000030f125b7ef471a10a5f102608c9eebac040000007800000030f125b7ef471a10a5f102608c9eebac0c00000050000000 C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_TopViewID = "{82BA0782-5B7A-4569-B5D7-EC83085F08CC}" C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
Key created \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9} C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\Mode = "4" C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\LogicalViewMode = "1" C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\FFlags = "1" C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
Set value (data) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
Set value (data) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 9e0000001a00eebbfe23000010007db10d7bd29c934a973346cc89022e7c00002a0000000000efbe000000200000000000000000000000000000000000000000000000000100000020002a0000000000efbe7e47b3fbe4c93b4ba2bad3f5d3cd46f98207ba827a5b6945b5d7ec83085f08cc20002a0000000000efbe000000200000000000000000000000000000000000000000000000000100000020000000 C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
Set value (data) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
Set value (data) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\NodeSlot = "1" C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
Key created \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
Set value (data) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\Sort = 000000000000000000000000000000000200000030f125b7ef471a10a5f102608c9eebac0a0000000100000030f125b7ef471a10a5f102608c9eebac0e000000ffffffff C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
Key created \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
Set value (data) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
Set value (data) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f4225481e03947bc34db131e946b44c8dd50000 C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
Key created \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe

"C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe"

Network

N/A

Files

memory/1988-0-0x000007FEF5043000-0x000007FEF5044000-memory.dmp

memory/1988-1-0x0000000000D40000-0x0000000000DCE000-memory.dmp

memory/1988-2-0x000007FEF5040000-0x000007FEF5A2C000-memory.dmp

memory/1988-3-0x000007FEF5040000-0x000007FEF5A2C000-memory.dmp

memory/1988-4-0x000007FEF5043000-0x000007FEF5044000-memory.dmp

memory/1988-5-0x000007FEF5040000-0x000007FEF5A2C000-memory.dmp

memory/1988-6-0x000007FEF5040000-0x000007FEF5A2C000-memory.dmp

memory/1988-7-0x000000001ECE0000-0x000000001ECF0000-memory.dmp

memory/1988-8-0x000007FEF5040000-0x000007FEF5A2C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-22 18:38

Reported

2024-06-22 18:41

Platform

win10v2004-20240508-en

Max time kernel

108s

Max time network

51s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe"

Signatures

Chaos

ransomware chaos

Chaos Ransomware

Description Indicator Process Target
N/A N/A N/A N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe

"C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe"

Network

Files

memory/4844-0-0x00007FF8EDF53000-0x00007FF8EDF55000-memory.dmp

memory/4844-1-0x00000000009E0000-0x0000000000A6E000-memory.dmp

memory/4844-2-0x00007FF8EDF50000-0x00007FF8EEA11000-memory.dmp

memory/4844-3-0x00007FF8EDF50000-0x00007FF8EEA11000-memory.dmp

memory/4844-4-0x00007FF8EDF50000-0x00007FF8EEA11000-memory.dmp

memory/4844-5-0x00007FF8EDF50000-0x00007FF8EEA11000-memory.dmp

memory/4844-6-0x00007FF8EDF50000-0x00007FF8EEA11000-memory.dmp

memory/4844-7-0x00007FF8EDF50000-0x00007FF8EEA11000-memory.dmp