umbral | b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8d

Analysis

max time kernel
75s
max time network
16s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
20-01-2025 06:50

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General

Target

b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe
Size

229KB
MD5

ba8d399c9ae62d44f0bebcf5cfde9960
SHA1

c9e8160c6854459b52f851d516fd0c305b292642
SHA256

b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8d
SHA512

a66f6ba994ad91f645ea68a0e06691bf8d12cfe543f52f763326d2d03b3a3efeee163390503ed44dd65f929a03cbb9cbd2ca52afd5db83f75b1be5dc10fc573a
SSDEEP

6144:lloZMHrIkd8g+EtXHkv/iD4Whm7EsyVtGETOMdRYy6b8e1mreMi:noZIL+EP8WhOEsyVtGETOMdRYpd

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/1728-1-0x0000000000960000-0x00000000009A0000-memory.dmp	family_umbral

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

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
2784	powershell.exe
632	powershell.exe
1552	powershell.exe
532	powershell.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

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
992	wmic.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2784	powershell.exe
632	powershell.exe
1552	powershell.exe
1096	powershell.exe
532	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1728	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe
Token: SeDebugPrivilege	2784	powershell.exe
Token: SeDebugPrivilege	632	powershell.exe
Token: SeDebugPrivilege	1552	powershell.exe
Token: SeDebugPrivilege	1096	powershell.exe
Token: SeIncreaseQuotaPrivilege	2724	wmic.exe
Token: SeSecurityPrivilege	2724	wmic.exe
Token: SeTakeOwnershipPrivilege	2724	wmic.exe
Token: SeLoadDriverPrivilege	2724	wmic.exe
Token: SeSystemProfilePrivilege	2724	wmic.exe
Token: SeSystemtimePrivilege	2724	wmic.exe
Token: SeProfSingleProcessPrivilege	2724	wmic.exe
Token: SeIncBasePriorityPrivilege	2724	wmic.exe
Token: SeCreatePagefilePrivilege	2724	wmic.exe
Token: SeBackupPrivilege	2724	wmic.exe
Token: SeRestorePrivilege	2724	wmic.exe
Token: SeShutdownPrivilege	2724	wmic.exe
Token: SeDebugPrivilege	2724	wmic.exe
Token: SeSystemEnvironmentPrivilege	2724	wmic.exe
Token: SeRemoteShutdownPrivilege	2724	wmic.exe
Token: SeUndockPrivilege	2724	wmic.exe
Token: SeManageVolumePrivilege	2724	wmic.exe
Token: 33	2724	wmic.exe
Token: 34	2724	wmic.exe
Token: 35	2724	wmic.exe
Token: SeIncreaseQuotaPrivilege	2724	wmic.exe
Token: SeSecurityPrivilege	2724	wmic.exe
Token: SeTakeOwnershipPrivilege	2724	wmic.exe
Token: SeLoadDriverPrivilege	2724	wmic.exe
Token: SeSystemProfilePrivilege	2724	wmic.exe
Token: SeSystemtimePrivilege	2724	wmic.exe
Token: SeProfSingleProcessPrivilege	2724	wmic.exe
Token: SeIncBasePriorityPrivilege	2724	wmic.exe
Token: SeCreatePagefilePrivilege	2724	wmic.exe
Token: SeBackupPrivilege	2724	wmic.exe
Token: SeRestorePrivilege	2724	wmic.exe
Token: SeShutdownPrivilege	2724	wmic.exe
Token: SeDebugPrivilege	2724	wmic.exe
Token: SeSystemEnvironmentPrivilege	2724	wmic.exe
Token: SeRemoteShutdownPrivilege	2724	wmic.exe
Token: SeUndockPrivilege	2724	wmic.exe
Token: SeManageVolumePrivilege	2724	wmic.exe
Token: 33	2724	wmic.exe
Token: 34	2724	wmic.exe
Token: 35	2724	wmic.exe
Token: SeIncreaseQuotaPrivilege	2036	wmic.exe
Token: SeSecurityPrivilege	2036	wmic.exe
Token: SeTakeOwnershipPrivilege	2036	wmic.exe
Token: SeLoadDriverPrivilege	2036	wmic.exe
Token: SeSystemProfilePrivilege	2036	wmic.exe
Token: SeSystemtimePrivilege	2036	wmic.exe
Token: SeProfSingleProcessPrivilege	2036	wmic.exe
Token: SeIncBasePriorityPrivilege	2036	wmic.exe
Token: SeCreatePagefilePrivilege	2036	wmic.exe
Token: SeBackupPrivilege	2036	wmic.exe
Token: SeRestorePrivilege	2036	wmic.exe
Token: SeShutdownPrivilege	2036	wmic.exe
Token: SeDebugPrivilege	2036	wmic.exe
Token: SeSystemEnvironmentPrivilege	2036	wmic.exe
Token: SeRemoteShutdownPrivilege	2036	wmic.exe
Token: SeUndockPrivilege	2036	wmic.exe
Token: SeManageVolumePrivilege	2036	wmic.exe
Token: 33	2036	wmic.exe
Token: 34	2036	wmic.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 1728 wrote to memory of 2784	1728	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	30
PID 1728 wrote to memory of 2784	1728	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	30
PID 1728 wrote to memory of 2784	1728	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	30
PID 1728 wrote to memory of 632	1728	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	32
PID 1728 wrote to memory of 632	1728	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	32
PID 1728 wrote to memory of 632	1728	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	32
PID 1728 wrote to memory of 1552	1728	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	34
PID 1728 wrote to memory of 1552	1728	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	34
PID 1728 wrote to memory of 1552	1728	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	34
PID 1728 wrote to memory of 1096	1728	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	36
PID 1728 wrote to memory of 1096	1728	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	36
PID 1728 wrote to memory of 1096	1728	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	36
PID 1728 wrote to memory of 2724	1728	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	38
PID 1728 wrote to memory of 2724	1728	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	38
PID 1728 wrote to memory of 2724	1728	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	38
PID 1728 wrote to memory of 2036	1728	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	41
PID 1728 wrote to memory of 2036	1728	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	41
PID 1728 wrote to memory of 2036	1728	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	41
PID 1728 wrote to memory of 2760	1728	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	43
PID 1728 wrote to memory of 2760	1728	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	43
PID 1728 wrote to memory of 2760	1728	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	43
PID 1728 wrote to memory of 532	1728	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	45
PID 1728 wrote to memory of 532	1728	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	45
PID 1728 wrote to memory of 532	1728	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	45
PID 1728 wrote to memory of 992	1728	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	47
PID 1728 wrote to memory of 992	1728	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	47
PID 1728 wrote to memory of 992	1728	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	47

C:\Users\Admin\AppData\Local\Temp\b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe
"C:\Users\Admin\AppData\Local\Temp\b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1728
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2784
- 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:632
- 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:1552
- 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:1096
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2724
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2036
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2760
- 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:532
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:992

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
b1f2d606cde39a4aff0c594197c424ab

SHA1
6eb752a57bad509b5ee3d34ede96f50949935e97

SHA256
5f0aeb2f2629830bf7e30de1ef6dda7fab539988efca57c642aa6ee3f6b2d242

SHA512
a42f980133aa58b73014fdafeae70c694e58b13eee053721292e4bbefd578296d77fa599aa873b00386b2e965034b8bbccb3f6223dcf5941260b830640b920fd

Download Submit
memory/532-52-0x00000000029E0000-0x00000000029E8000-memory.dmp

Filesize
32KB

Download
memory/632-22-0x00000000022C0000-0x00000000022C8000-memory.dmp

Filesize
32KB

Download
memory/632-21-0x000000001B4F0000-0x000000001B7D2000-memory.dmp

Filesize
2.9MB

Download
memory/1728-1-0x0000000000960000-0x00000000009A0000-memory.dmp

Filesize
256KB

Download
memory/1728-2-0x000007FEF5DF0000-0x000007FEF67DC000-memory.dmp

Filesize
9.9MB

Download
memory/1728-56-0x000007FEF5DF0000-0x000007FEF67DC000-memory.dmp

Filesize
9.9MB

Download
memory/1728-0-0x000007FEF5DF3000-0x000007FEF5DF4000-memory.dmp

Filesize
4KB

Download
memory/1728-45-0x000007FEF5DF0000-0x000007FEF67DC000-memory.dmp

Filesize
9.9MB

Download
memory/1728-44-0x000007FEF5DF3000-0x000007FEF5DF4000-memory.dmp

Filesize
4KB

Download
memory/2784-10-0x0000000002340000-0x0000000002348000-memory.dmp

Filesize
32KB

Download
memory/2784-15-0x000007FEED960000-0x000007FEEE2FD000-memory.dmp

Filesize
9.6MB

Download
memory/2784-14-0x000007FEED960000-0x000007FEEE2FD000-memory.dmp

Filesize
9.6MB

Download
memory/2784-13-0x000007FEED960000-0x000007FEEE2FD000-memory.dmp

Filesize
9.6MB

Download
memory/2784-12-0x000007FEED960000-0x000007FEEE2FD000-memory.dmp

Filesize
9.6MB

Download
memory/2784-8-0x000000001B620000-0x000000001B902000-memory.dmp

Filesize
2.9MB

Download
memory/2784-9-0x000007FEED960000-0x000007FEEE2FD000-memory.dmp

Filesize
9.6MB

Download
memory/2784-11-0x000007FEED960000-0x000007FEEE2FD000-memory.dmp

Filesize
9.6MB

Download
memory/2784-7-0x000007FEEDC1E000-0x000007FEEDC1F000-memory.dmp

Filesize
4KB

Download