umbral | 0465cfcd8ec390d5d4e321ca1609ee70be881b906754cb5e783201114d922fcf

Analysis

max time kernel
93s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
23/01/2025, 04:21

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General

Target
CorruptX1.3.exe
Size 495KB
Sample250123-eymbzaskd1
SHA256 0465cfcd8ec390d5d4e321ca1609ee70be881b906754cb5e783201114d922fcf
MD5 c57206c732c6cfaa8a4de6495732c8de
SHA1 eb4127b4a20b05a3db766b3c953f0e12eb3070e9
SHA512 f1205d7c5daaa6b38ec121200875c8355857252ad4d474ce629c8584e73933e050e4f74c968617908044b9e819bc099dab8866e4f065acd4aa0b203001d1a6c9
SSDEEP 6144:vloZM+rIkd8g+EtXHkv/iD4cGiqU69VeGbGkFZw9Xb8e1mqe6i:NoZtL+EP8cGiqU69VeGbGkFZwBLS
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/3604-1-0x000001BCFED90000-0x000001BCFEE12000-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
2020	powershell.exe
5060	powershell.exe
3212	powershell.exe
1280	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

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
22	discord.com
23	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
836	cmd.exe
2664	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4568	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2664	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
3604	CorruptX1.3.exe
2020	powershell.exe
2020	powershell.exe
5060	powershell.exe
5060	powershell.exe
3212	powershell.exe
3212	powershell.exe
3528	powershell.exe
3528	powershell.exe
1280	powershell.exe
1280	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3604	CorruptX1.3.exe
Token: SeIncreaseQuotaPrivilege	2776	wmic.exe
Token: SeSecurityPrivilege	2776	wmic.exe
Token: SeTakeOwnershipPrivilege	2776	wmic.exe
Token: SeLoadDriverPrivilege	2776	wmic.exe
Token: SeSystemProfilePrivilege	2776	wmic.exe
Token: SeSystemtimePrivilege	2776	wmic.exe
Token: SeProfSingleProcessPrivilege	2776	wmic.exe
Token: SeIncBasePriorityPrivilege	2776	wmic.exe
Token: SeCreatePagefilePrivilege	2776	wmic.exe
Token: SeBackupPrivilege	2776	wmic.exe
Token: SeRestorePrivilege	2776	wmic.exe
Token: SeShutdownPrivilege	2776	wmic.exe
Token: SeDebugPrivilege	2776	wmic.exe
Token: SeSystemEnvironmentPrivilege	2776	wmic.exe
Token: SeRemoteShutdownPrivilege	2776	wmic.exe
Token: SeUndockPrivilege	2776	wmic.exe
Token: SeManageVolumePrivilege	2776	wmic.exe
Token: 33	2776	wmic.exe
Token: 34	2776	wmic.exe
Token: 35	2776	wmic.exe
Token: 36	2776	wmic.exe
Token: SeIncreaseQuotaPrivilege	2776	wmic.exe
Token: SeSecurityPrivilege	2776	wmic.exe
Token: SeTakeOwnershipPrivilege	2776	wmic.exe
Token: SeLoadDriverPrivilege	2776	wmic.exe
Token: SeSystemProfilePrivilege	2776	wmic.exe
Token: SeSystemtimePrivilege	2776	wmic.exe
Token: SeProfSingleProcessPrivilege	2776	wmic.exe
Token: SeIncBasePriorityPrivilege	2776	wmic.exe
Token: SeCreatePagefilePrivilege	2776	wmic.exe
Token: SeBackupPrivilege	2776	wmic.exe
Token: SeRestorePrivilege	2776	wmic.exe
Token: SeShutdownPrivilege	2776	wmic.exe
Token: SeDebugPrivilege	2776	wmic.exe
Token: SeSystemEnvironmentPrivilege	2776	wmic.exe
Token: SeRemoteShutdownPrivilege	2776	wmic.exe
Token: SeUndockPrivilege	2776	wmic.exe
Token: SeManageVolumePrivilege	2776	wmic.exe
Token: 33	2776	wmic.exe
Token: 34	2776	wmic.exe
Token: 35	2776	wmic.exe
Token: 36	2776	wmic.exe
Token: SeDebugPrivilege	2020	powershell.exe
Token: SeDebugPrivilege	5060	powershell.exe
Token: SeDebugPrivilege	3212	powershell.exe
Token: SeDebugPrivilege	3528	powershell.exe
Token: SeIncreaseQuotaPrivilege	4384	wmic.exe
Token: SeSecurityPrivilege	4384	wmic.exe
Token: SeTakeOwnershipPrivilege	4384	wmic.exe
Token: SeLoadDriverPrivilege	4384	wmic.exe
Token: SeSystemProfilePrivilege	4384	wmic.exe
Token: SeSystemtimePrivilege	4384	wmic.exe
Token: SeProfSingleProcessPrivilege	4384	wmic.exe
Token: SeIncBasePriorityPrivilege	4384	wmic.exe
Token: SeCreatePagefilePrivilege	4384	wmic.exe
Token: SeBackupPrivilege	4384	wmic.exe
Token: SeRestorePrivilege	4384	wmic.exe
Token: SeShutdownPrivilege	4384	wmic.exe
Token: SeDebugPrivilege	4384	wmic.exe
Token: SeSystemEnvironmentPrivilege	4384	wmic.exe
Token: SeRemoteShutdownPrivilege	4384	wmic.exe
Token: SeUndockPrivilege	4384	wmic.exe
Token: SeManageVolumePrivilege	4384	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3604 wrote to memory of 2776	3604	CorruptX1.3.exe	83
PID 3604 wrote to memory of 2776	3604	CorruptX1.3.exe	83
PID 3604 wrote to memory of 3488	3604	CorruptX1.3.exe	86
PID 3604 wrote to memory of 3488	3604	CorruptX1.3.exe	86
PID 3604 wrote to memory of 2020	3604	CorruptX1.3.exe	88
PID 3604 wrote to memory of 2020	3604	CorruptX1.3.exe	88
PID 3604 wrote to memory of 5060	3604	CorruptX1.3.exe	90
PID 3604 wrote to memory of 5060	3604	CorruptX1.3.exe	90
PID 3604 wrote to memory of 3212	3604	CorruptX1.3.exe	92
PID 3604 wrote to memory of 3212	3604	CorruptX1.3.exe	92
PID 3604 wrote to memory of 3528	3604	CorruptX1.3.exe	94
PID 3604 wrote to memory of 3528	3604	CorruptX1.3.exe	94
PID 3604 wrote to memory of 4384	3604	CorruptX1.3.exe	96
PID 3604 wrote to memory of 4384	3604	CorruptX1.3.exe	96
PID 3604 wrote to memory of 4848	3604	CorruptX1.3.exe	98
PID 3604 wrote to memory of 4848	3604	CorruptX1.3.exe	98
PID 3604 wrote to memory of 4040	3604	CorruptX1.3.exe	101
PID 3604 wrote to memory of 4040	3604	CorruptX1.3.exe	101
PID 3604 wrote to memory of 1280	3604	CorruptX1.3.exe	103
PID 3604 wrote to memory of 1280	3604	CorruptX1.3.exe	103
PID 3604 wrote to memory of 4568	3604	CorruptX1.3.exe	105
PID 3604 wrote to memory of 4568	3604	CorruptX1.3.exe	105
PID 3604 wrote to memory of 836	3604	CorruptX1.3.exe	107
PID 3604 wrote to memory of 836	3604	CorruptX1.3.exe	107
PID 836 wrote to memory of 2664	836	cmd.exe	109
PID 836 wrote to memory of 2664	836	cmd.exe	109

Views/modifies file attributes 1 TTPs 1 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
3488	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:3604
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2776
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\CorruptX1.3.exe"
  2⤵
  - Views/modifies file attributes
  PID:3488
- 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:2020
- 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:5060
- 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:3212
- 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:3528
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4384
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:4848
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4040
- 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:1280
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4568
- 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⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:836
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2664

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

powershell.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Size 2KB
SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
MD5 d85ba6ff808d9e5444a4b369f5bc2730
SHA1 31aa9d96590fff6981b315e0b391b575e4c0804a
SHA512 8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
MD5 SHA1 SHA512

Submit Download

StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d
MD5 6d3e9c29fe44e90aae6ed30ccf799ca8
SHA1 c7974ef72264bbdf13a2793ccf1aed11bc565dce
SHA512 60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a
MD5 SHA1 SHA512

Submit Download

StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 948B
SHA256 98d3c70d7004fa807897317bd6cd3e977b9b6c72d4d2565aca0f9f8b1c315cba
MD5 966914e2e771de7a4a57a95b6ecfa8a9
SHA1 7a32282fd51dd032967ed4d9a40cc57e265aeff2
SHA512 dc39c7124a9c7c8d4c7e8e16290c46360b8d9a8f4e43edaacbbeb09bdcf20159a53db54d2b322372001b6a3de52b2f88e9088b5fdbc7638816ae0d122bb015f5
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 cd0a1056e8f1b6cb5cb328532239d802f4e2aa8f8fcdc0fcb487684bd68e0dcc
MD5 276798eeb29a49dc6e199768bc9c2e71
SHA1 5fdc8ccb897ac2df7476fbb07517aca5b7a6205b
SHA512 0d34fce64bbefc57d64fa6e03ca886952263d5f24df9c1c4cce6a1e8f5a47a9a21e9820f8d38caa7f7b43a52336ce00b738ea18419aaa7c788b72e04ce19e4f2
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 486ea5d4e5a060d5e2b325a29184963117b806eac4c3c8f2054e270977a6a76b
MD5 128b92209197100ce7aff24e1fcb531e
SHA1 3333b685091e506aba63a8fa480abcb3e387ca11
SHA512 75aa70ee708b793be9a72a11a6e60c356181bbb93d6c2addd627606974048733f760850f4022926fc0f13b8a7dcdd94cd4b4a5374a0e57d236525649fe7a221f
MD5 SHA1 SHA512

Submit Download

__PSScriptPolicyTest_alrisvqc.rzq.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_alrisvqc.rzq.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/2020-13-0x0000018EAC830000-0x0000018EAC852000-memory.dmp

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memory/2020-14-0x00007FFFA5FC0000-0x00007FFFA6A81000-memory.dmp

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memory/2020-15-0x00007FFFA5FC0000-0x00007FFFA6A81000-memory.dmp

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memory/2020-18-0x00007FFFA5FC0000-0x00007FFFA6A81000-memory.dmp

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memory/2020-3-0x00007FFFA5FC0000-0x00007FFFA6A81000-memory.dmp

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memory/3604-34-0x000001BCFFF90000-0x000001BCFFFE0000-memory.dmp

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memory/3604-33-0x000001BD00080000-0x000001BD000F6000-memory.dmp

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memory/3604-35-0x000001BCFF230000-0x000001BCFF24E000-memory.dmp

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memory/3604-1-0x000001BCFED90000-0x000001BCFEE12000-memory.dmp

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memory/3604-0-0x00007FFFA5FC3000-0x00007FFFA5FC5000-memory.dmp

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memory/3604-68-0x000001BCFF200000-0x000001BCFF20A000-memory.dmp

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memory/3604-69-0x000001BCFF270000-0x000001BCFF282000-memory.dmp

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memory/3604-2-0x00007FFFA5FC0000-0x00007FFFA6A81000-memory.dmp

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memory/3604-87-0x00007FFFA5FC0000-0x00007FFFA6A81000-memory.dmp

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