Malware Analysis Report

2024-11-13 15:33

Sample ID 241003-nj6lqsxcpm
Target encrypted.exe
SHA256 a6d95538d1d2f4031e10ff3a1258400a3f471fe64e14ff2dc9808c28334d0cea
Tags
vipkeylogger collection discovery keylogger spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

a6d95538d1d2f4031e10ff3a1258400a3f471fe64e14ff2dc9808c28334d0cea

Threat Level: Known bad

The file encrypted.exe was found to be: Known bad.

Malicious Activity Summary

vipkeylogger collection discovery keylogger spyware stealer

VIPKeylogger

Reads user/profile data of local email clients

Reads user/profile data of web browsers

Looks up external IP address via web service

Accesses Microsoft Outlook profiles

Unsigned PE

Enumerates physical storage devices

Browser Information Discovery

Modifies registry class

outlook_win_path

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Opens file in notepad (likely ransom note)

Suspicious use of AdjustPrivilegeToken

outlook_office_path

Suspicious use of FindShellTrayWindow

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-03 11:26

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-03 11:26

Reported

2024-10-03 11:28

Platform

win7-20240903-en

Max time kernel

102s

Max time network

106s

Command Line

"C:\Users\Admin\AppData\Local\Temp\encrypted.exe"

Signatures

VIPKeylogger

stealer keylogger vipkeylogger

Reads user/profile data of local email clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Accesses Microsoft Outlook profiles

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\encrypted.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\encrypted.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\encrypted.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A checkip.dyndns.org N/A N/A

Browser Information Discovery

discovery

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000_Classes\Local Settings C:\Windows\system32\rundll32.exe N/A

Opens file in notepad (likely ransom note)

ransomware
Description Indicator Process Target
N/A N/A C:\Windows\system32\NOTEPAD.EXE N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\encrypted.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\encrypted.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Windows\system32\rundll32.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\encrypted.exe N/A
Token: SeRestorePrivilege N/A C:\Program Files\7-Zip\7zG.exe N/A
Token: 35 N/A C:\Program Files\7-Zip\7zG.exe N/A
Token: SeSecurityPrivilege N/A C:\Program Files\7-Zip\7zG.exe N/A
Token: SeSecurityPrivilege N/A C:\Program Files\7-Zip\7zG.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Program Files\7-Zip\7zG.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1512 wrote to memory of 2356 N/A C:\Windows\system32\rundll32.exe C:\Windows\system32\NOTEPAD.EXE
PID 1512 wrote to memory of 2356 N/A C:\Windows\system32\rundll32.exe C:\Windows\system32\NOTEPAD.EXE
PID 1512 wrote to memory of 2356 N/A C:\Windows\system32\rundll32.exe C:\Windows\system32\NOTEPAD.EXE

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\encrypted.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\encrypted.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\encrypted.exe

"C:\Users\Admin\AppData\Local\Temp\encrypted.exe"

C:\Windows\explorer.exe

"C:\Windows\explorer.exe"

C:\Program Files\7-Zip\7zG.exe

"C:\Program Files\7-Zip\7zG.exe" x -o"C:\Users\Admin\AppData\Local\Temp\3711440261\zmstage.exe\" -spe -an -ai#7zMap24679:126:7zEvent25022

C:\Windows\system32\rundll32.exe

"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\3711440261\zmstage.exe.orig

C:\Windows\system32\NOTEPAD.EXE

"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\3711440261\zmstage.exe.orig

C:\Users\Admin\AppData\Local\Temp\3711440261\zmsta.exe

"C:\Users\Admin\AppData\Local\Temp\3711440261\zmsta.exe"

C:\Users\Admin\AppData\Local\Temp\3711440261\zmsta.exe

"C:\Users\Admin\AppData\Local\Temp\3711440261\zmsta.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 checkip.dyndns.org udp
DE 193.122.6.168:80 checkip.dyndns.org tcp
US 8.8.8.8:53 reallyfreegeoip.org udp
US 104.21.67.152:443 reallyfreegeoip.org tcp
US 8.8.8.8:53 api.telegram.org udp
NL 149.154.167.220:443 api.telegram.org tcp

Files

memory/3064-0-0x0000000000100000-0x000000000014C000-memory.dmp

memory/3064-1-0x000007FEF4F43000-0x000007FEF4F44000-memory.dmp

memory/3064-2-0x000000001B080000-0x000000001B0CA000-memory.dmp

memory/3064-3-0x000007FEF4F40000-0x000007FEF592C000-memory.dmp

memory/3064-4-0x000007FEF4F40000-0x000007FEF592C000-memory.dmp

memory/3064-5-0x000007FEF4F40000-0x000007FEF592C000-memory.dmp

memory/3064-6-0x000007FEF4F43000-0x000007FEF4F44000-memory.dmp

memory/3064-7-0x000007FEF4F40000-0x000007FEF592C000-memory.dmp

memory/3064-8-0x000007FEF4F40000-0x000007FEF592C000-memory.dmp

memory/3064-9-0x000007FEF4F40000-0x000007FEF592C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-03 11:26

Reported

2024-10-03 11:31

Platform

win10v2004-20240802-en

Max time kernel

110s

Max time network

204s

Command Line

"C:\Users\Admin\AppData\Local\Temp\encrypted.exe"

Signatures

VIPKeylogger

stealer keylogger vipkeylogger

Reads user/profile data of local email clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Accesses Microsoft Outlook profiles

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\encrypted.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\encrypted.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\encrypted.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A checkip.dyndns.org N/A N/A

Browser Information Discovery

discovery

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\encrypted.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\encrypted.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\encrypted.exe N/A

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\encrypted.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Users\Admin\AppData\Local\Temp\encrypted.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\encrypted.exe

"C:\Users\Admin\AppData\Local\Temp\encrypted.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 checkip.dyndns.org udp
DE 193.122.6.168:80 checkip.dyndns.org tcp
US 8.8.8.8:53 reallyfreegeoip.org udp
US 104.21.67.152:443 reallyfreegeoip.org tcp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 168.6.122.193.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 152.67.21.104.in-addr.arpa udp
US 8.8.8.8:53 api.telegram.org udp
NL 149.154.167.220:443 api.telegram.org tcp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 220.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 75.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp

Files

memory/4420-0-0x0000028023310000-0x000002802335C000-memory.dmp

memory/4420-1-0x00007FFAD5503000-0x00007FFAD5505000-memory.dmp

memory/4420-2-0x00000280233E0000-0x000002802342A000-memory.dmp

memory/4420-3-0x00007FFAD5500000-0x00007FFAD5FC1000-memory.dmp

memory/4420-4-0x00007FFAD5500000-0x00007FFAD5FC1000-memory.dmp

memory/4420-5-0x00007FFAD5500000-0x00007FFAD5FC1000-memory.dmp

memory/4420-6-0x00007FFAD5503000-0x00007FFAD5505000-memory.dmp

memory/4420-7-0x00007FFAD5500000-0x00007FFAD5FC1000-memory.dmp

memory/4420-8-0x00007FFAD5500000-0x00007FFAD5FC1000-memory.dmp

memory/4420-9-0x000002803CAE0000-0x000002803CCA2000-memory.dmp

memory/4420-10-0x000002803C910000-0x000002803C960000-memory.dmp