Malware Analysis Report

2024-10-10 10:06

Sample ID 240428-bsfqfsdc5z
Target 5658f42d6332d99827d772a710d74e905f822d23e958c86f802973c2cffe850f.exe
SHA256 5658f42d6332d99827d772a710d74e905f822d23e958c86f802973c2cffe850f
Tags
umbral stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

5658f42d6332d99827d772a710d74e905f822d23e958c86f802973c2cffe850f

Threat Level: Known bad

The file 5658f42d6332d99827d772a710d74e905f822d23e958c86f802973c2cffe850f.exe was found to be: Known bad.

Malicious Activity Summary

umbral stealer

Detect Umbral payload

Detects executables containing possible sandbox analysis VM usernames

Detects executables attemping to enumerate video devices using WMI

Umbral

Detects executables containing possible sandbox system UUIDs

Detects executables containing possible sandbox analysis VM names

Umbral family

Detects executables containing possible sandbox analysis VM usernames

Detects executables attemping to enumerate video devices using WMI

Detects executables containing possible sandbox analysis VM names

Detects executables containing possible sandbox system UUIDs

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-04-28 01:24

Signatures

Detect Umbral payload

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

Detects executables attemping to enumerate video devices using WMI

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

Detects executables containing possible sandbox analysis VM names

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

Detects executables containing possible sandbox analysis VM usernames

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

Detects executables containing possible sandbox system UUIDs

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

Umbral family

umbral

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-28 01:24

Reported

2024-04-28 01:26

Platform

win10v2004-20240419-en

Max time kernel

144s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5658f42d6332d99827d772a710d74e905f822d23e958c86f802973c2cffe850f.exe"

Signatures

Detect Umbral payload

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

Umbral

stealer umbral

Detects executables attemping to enumerate video devices using WMI

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

Detects executables containing possible sandbox analysis VM names

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

Detects executables containing possible sandbox analysis VM usernames

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

Detects executables containing possible sandbox system UUIDs

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\5658f42d6332d99827d772a710d74e905f822d23e958c86f802973c2cffe850f.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\5658f42d6332d99827d772a710d74e905f822d23e958c86f802973c2cffe850f.exe

"C:\Users\Admin\AppData\Local\Temp\5658f42d6332d99827d772a710d74e905f822d23e958c86f802973c2cffe850f.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 gstatic.com udp
US 8.8.8.8:53 gstatic.com udp
US 8.8.8.8:53 gstatic.com udp

Files

memory/3928-0-0x00000210C73A0000-0x00000210C73E0000-memory.dmp

memory/3928-2-0x00000210C91B0000-0x00000210C91C0000-memory.dmp

memory/3928-1-0x00007FFB68B80000-0x00007FFB69641000-memory.dmp

memory/3928-3-0x00007FFB68B80000-0x00007FFB69641000-memory.dmp

memory/3928-4-0x00000210C91B0000-0x00000210C91C0000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-28 01:24

Reported

2024-04-28 01:26

Platform

win7-20240221-en

Max time kernel

120s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5658f42d6332d99827d772a710d74e905f822d23e958c86f802973c2cffe850f.exe"

Signatures

Detect Umbral payload

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

Umbral

stealer umbral

Detects executables attemping to enumerate video devices using WMI

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

Detects executables containing possible sandbox analysis VM names

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

Detects executables containing possible sandbox analysis VM usernames

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

Detects executables containing possible sandbox system UUIDs

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\5658f42d6332d99827d772a710d74e905f822d23e958c86f802973c2cffe850f.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeSystemtimePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeUndockPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeManageVolumePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: 33 N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: 34 N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: 35 N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeSystemtimePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeUndockPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeManageVolumePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: 33 N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: 34 N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: 35 N/A C:\Windows\System32\Wbem\wmic.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\5658f42d6332d99827d772a710d74e905f822d23e958c86f802973c2cffe850f.exe

"C:\Users\Admin\AppData\Local\Temp\5658f42d6332d99827d772a710d74e905f822d23e958c86f802973c2cffe850f.exe"

C:\Windows\System32\Wbem\wmic.exe

"wmic.exe" csproduct get uuid

Network

Country Destination Domain Proto
US 8.8.8.8:53 gstatic.com udp
GB 216.58.201.99:443 gstatic.com tcp

Files

memory/1956-0-0x0000000001340000-0x0000000001380000-memory.dmp

memory/1956-1-0x000007FEF5820000-0x000007FEF620C000-memory.dmp

memory/1956-2-0x0000000000B20000-0x0000000000BA0000-memory.dmp

memory/1956-3-0x000007FEF5820000-0x000007FEF620C000-memory.dmp