umbral | 5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
08/06/2024, 01:12

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General

Target

5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe
Size

229KB
MD5

1adeea63d576dea9add98e01e9fe78b4
SHA1

8f754fd661d9ce2e9e9a7278b4dd7096b13fc585
SHA256

5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84
SHA512

0ba3c5555273a15c5406f0bd1b5f1a3888814bdbb4130f80eae1f973497c4e5d81a92ed0797a55316b358a42a955fe44f476d1e0e90c15211dc30f4dd20c58cb
SSDEEP

6144:lloZMCrIkd8g+EtXHkv/iD4sodaBPUonIWvRsY99ib8e1miLZi:noZZL+EP8sodaBPUonIWvRsY9wfLA

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/856-1-0x0000000000BA0000-0x0000000000BE0000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral

Detects executables attemping to enumerate video devices using WMI 1 IoCs

resource	yara_rule
behavioral1/memory/856-1-0x0000000000BA0000-0x0000000000BE0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_WMI_EnumerateVideoDevice

Detects executables containing possible sandbox analysis VM names 1 IoCs

resource	yara_rule
behavioral1/memory/856-1-0x0000000000BA0000-0x0000000000BE0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxComputerNames

Detects executables containing possible sandbox analysis VM usernames 1 IoCs

resource	yara_rule
behavioral1/memory/856-1-0x0000000000BA0000-0x0000000000BE0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxUserNames

Detects executables containing possible sandbox system UUIDs 1 IoCs

resource	yara_rule
behavioral1/memory/856-1-0x0000000000BA0000-0x0000000000BE0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxSystemUUIDs

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2104	powershell.exe

Reads user/profile data of web browsers 2 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

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
8	discord.com
9	discord.com

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
6	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1220	wmic.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2104	powershell.exe
2716	powershell.exe
2712	powershell.exe
2892	powershell.exe
1704	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	856	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe
Token: SeDebugPrivilege	2104	powershell.exe
Token: SeDebugPrivilege	2716	powershell.exe
Token: SeDebugPrivilege	2712	powershell.exe
Token: SeDebugPrivilege	2892	powershell.exe
Token: SeIncreaseQuotaPrivilege	2920	wmic.exe
Token: SeSecurityPrivilege	2920	wmic.exe
Token: SeTakeOwnershipPrivilege	2920	wmic.exe
Token: SeLoadDriverPrivilege	2920	wmic.exe
Token: SeSystemProfilePrivilege	2920	wmic.exe
Token: SeSystemtimePrivilege	2920	wmic.exe
Token: SeProfSingleProcessPrivilege	2920	wmic.exe
Token: SeIncBasePriorityPrivilege	2920	wmic.exe
Token: SeCreatePagefilePrivilege	2920	wmic.exe
Token: SeBackupPrivilege	2920	wmic.exe
Token: SeRestorePrivilege	2920	wmic.exe
Token: SeShutdownPrivilege	2920	wmic.exe
Token: SeDebugPrivilege	2920	wmic.exe
Token: SeSystemEnvironmentPrivilege	2920	wmic.exe
Token: SeRemoteShutdownPrivilege	2920	wmic.exe
Token: SeUndockPrivilege	2920	wmic.exe
Token: SeManageVolumePrivilege	2920	wmic.exe
Token: 33	2920	wmic.exe
Token: 34	2920	wmic.exe
Token: 35	2920	wmic.exe
Token: SeIncreaseQuotaPrivilege	2920	wmic.exe
Token: SeSecurityPrivilege	2920	wmic.exe
Token: SeTakeOwnershipPrivilege	2920	wmic.exe
Token: SeLoadDriverPrivilege	2920	wmic.exe
Token: SeSystemProfilePrivilege	2920	wmic.exe
Token: SeSystemtimePrivilege	2920	wmic.exe
Token: SeProfSingleProcessPrivilege	2920	wmic.exe
Token: SeIncBasePriorityPrivilege	2920	wmic.exe
Token: SeCreatePagefilePrivilege	2920	wmic.exe
Token: SeBackupPrivilege	2920	wmic.exe
Token: SeRestorePrivilege	2920	wmic.exe
Token: SeShutdownPrivilege	2920	wmic.exe
Token: SeDebugPrivilege	2920	wmic.exe
Token: SeSystemEnvironmentPrivilege	2920	wmic.exe
Token: SeRemoteShutdownPrivilege	2920	wmic.exe
Token: SeUndockPrivilege	2920	wmic.exe
Token: SeManageVolumePrivilege	2920	wmic.exe
Token: 33	2920	wmic.exe
Token: 34	2920	wmic.exe
Token: 35	2920	wmic.exe
Token: SeIncreaseQuotaPrivilege	320	wmic.exe
Token: SeSecurityPrivilege	320	wmic.exe
Token: SeTakeOwnershipPrivilege	320	wmic.exe
Token: SeLoadDriverPrivilege	320	wmic.exe
Token: SeSystemProfilePrivilege	320	wmic.exe
Token: SeSystemtimePrivilege	320	wmic.exe
Token: SeProfSingleProcessPrivilege	320	wmic.exe
Token: SeIncBasePriorityPrivilege	320	wmic.exe
Token: SeCreatePagefilePrivilege	320	wmic.exe
Token: SeBackupPrivilege	320	wmic.exe
Token: SeRestorePrivilege	320	wmic.exe
Token: SeShutdownPrivilege	320	wmic.exe
Token: SeDebugPrivilege	320	wmic.exe
Token: SeSystemEnvironmentPrivilege	320	wmic.exe
Token: SeRemoteShutdownPrivilege	320	wmic.exe
Token: SeUndockPrivilege	320	wmic.exe
Token: SeManageVolumePrivilege	320	wmic.exe
Token: 33	320	wmic.exe
Token: 34	320	wmic.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 856 wrote to memory of 2104	856	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	28
PID 856 wrote to memory of 2104	856	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	28
PID 856 wrote to memory of 2104	856	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	28
PID 856 wrote to memory of 2716	856	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	30
PID 856 wrote to memory of 2716	856	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	30
PID 856 wrote to memory of 2716	856	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	30
PID 856 wrote to memory of 2712	856	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	32
PID 856 wrote to memory of 2712	856	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	32
PID 856 wrote to memory of 2712	856	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	32
PID 856 wrote to memory of 2892	856	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	34
PID 856 wrote to memory of 2892	856	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	34
PID 856 wrote to memory of 2892	856	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	34
PID 856 wrote to memory of 2920	856	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	36
PID 856 wrote to memory of 2920	856	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	36
PID 856 wrote to memory of 2920	856	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	36
PID 856 wrote to memory of 320	856	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	39
PID 856 wrote to memory of 320	856	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	39
PID 856 wrote to memory of 320	856	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	39
PID 856 wrote to memory of 1476	856	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	41
PID 856 wrote to memory of 1476	856	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	41
PID 856 wrote to memory of 1476	856	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	41
PID 856 wrote to memory of 1704	856	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	43
PID 856 wrote to memory of 1704	856	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	43
PID 856 wrote to memory of 1704	856	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	43
PID 856 wrote to memory of 1220	856	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	45
PID 856 wrote to memory of 1220	856	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	45
PID 856 wrote to memory of 1220	856	5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe	45

C:\Users\Admin\AppData\Local\Temp\5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe
"C:\Users\Admin\AppData\Local\Temp\5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:856
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2104
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Set-MpPreference -DisableIntrusionPreventionSystem $true -DisableIOAVProtection $true -DisableRealtimeMonitoring $true -DisableScriptScanning $true -EnableControlledFolderAccess Disabled -EnableNetworkProtection AuditMode -Force -MAPSReporting Disabled -SubmitSamplesConsent NeverSend && powershell Set-MpPreference -SubmitSamplesConsent 2
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2716
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2712
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2892
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2920
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:320
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1476
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:1704
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1220

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
92dfd95a3addcf7603c469eebe5cb4fc

SHA1
53c47dc844f59406fb4a10cc22fc3f35b7e37610

SHA256
9cab9b112c3776490c7d4fd5aed6c08a62c4daee5fb275040bd41a563fc619f2

SHA512
41950a3b7278bc22a3be7cdc45190b23cc147026317bc9d3ea234a1cb64c025d1e65a6cd4ef94ee5a6e3f69853cf85a7568cb7c8655b74eccd031c48a485c128

Download Submit
memory/856-1-0x0000000000BA0000-0x0000000000BE0000-memory.dmp

Filesize
256KB

Download
memory/856-2-0x000007FEF5A10000-0x000007FEF63FC000-memory.dmp

Filesize
9.9MB

Download
memory/856-52-0x000007FEF5A10000-0x000007FEF63FC000-memory.dmp

Filesize
9.9MB

Download
memory/856-0-0x000007FEF5A13000-0x000007FEF5A14000-memory.dmp

Filesize
4KB

Download
memory/1704-48-0x000000001B540000-0x000000001B822000-memory.dmp

Filesize
2.9MB

Download
memory/2104-8-0x000000001B760000-0x000000001BA42000-memory.dmp

Filesize
2.9MB

Download
memory/2104-12-0x000007FEEDA50000-0x000007FEEE3ED000-memory.dmp

Filesize
9.6MB

Download
memory/2104-13-0x000007FEEDA50000-0x000007FEEE3ED000-memory.dmp

Filesize
9.6MB

Download
memory/2104-14-0x000007FEEDA50000-0x000007FEEE3ED000-memory.dmp

Filesize
9.6MB

Download
memory/2104-15-0x000007FEEDA50000-0x000007FEEE3ED000-memory.dmp

Filesize
9.6MB

Download
memory/2104-11-0x000007FEEDA50000-0x000007FEEE3ED000-memory.dmp

Filesize
9.6MB

Download
memory/2104-10-0x000007FEEDA50000-0x000007FEEE3ED000-memory.dmp

Filesize
9.6MB

Download
memory/2104-9-0x0000000001CE0000-0x0000000001CE8000-memory.dmp

Filesize
32KB

Download
memory/2104-7-0x000007FEEDD0E000-0x000007FEEDD0F000-memory.dmp

Filesize
4KB

Download
memory/2716-21-0x000000001B6F0000-0x000000001B9D2000-memory.dmp

Filesize
2.9MB

Download
memory/2716-22-0x0000000002290000-0x0000000002298000-memory.dmp

Filesize
32KB

Download