umbral | db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69

Analysis

max time kernel
118s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
17-09-2024 21:49

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General

Target

db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe
Size

232KB
MD5

e552c6a05617db44fa43f9c71e5f52e0
SHA1

205955082d95aeb78fce636f0bfc227777ccbd47
SHA256

db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69
SHA512

7f58593abc19cbbe316a96c9fa2b55f108c314111cdee6834cad8d60db1c53aef5abe04b29fa1439d58fb61cc98fd9b57dc8b7a4155a93a36025c5163436fbf8
SSDEEP

6144:iloZM+rIkd8g+EtXHkv/iD4GNtExfEY34mfhpNsjLb8e1mPZi:soZtL+EP8GNtExfEY34mfhpNsrT

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2948-1-0x0000000000F70000-0x0000000000FB0000-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
2228	powershell.exe
2636	powershell.exe
2092	powershell.exe
1480	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe

Deletes itself 1 IoCs

pid	Process
2084	cmd.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
7	discord.com
8	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

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
2084	cmd.exe
2340	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1712	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2340	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe
2228	powershell.exe
2636	powershell.exe
2092	powershell.exe
2860	powershell.exe
1480	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe
Token: SeIncreaseQuotaPrivilege	2716	wmic.exe
Token: SeSecurityPrivilege	2716	wmic.exe
Token: SeTakeOwnershipPrivilege	2716	wmic.exe
Token: SeLoadDriverPrivilege	2716	wmic.exe
Token: SeSystemProfilePrivilege	2716	wmic.exe
Token: SeSystemtimePrivilege	2716	wmic.exe
Token: SeProfSingleProcessPrivilege	2716	wmic.exe
Token: SeIncBasePriorityPrivilege	2716	wmic.exe
Token: SeCreatePagefilePrivilege	2716	wmic.exe
Token: SeBackupPrivilege	2716	wmic.exe
Token: SeRestorePrivilege	2716	wmic.exe
Token: SeShutdownPrivilege	2716	wmic.exe
Token: SeDebugPrivilege	2716	wmic.exe
Token: SeSystemEnvironmentPrivilege	2716	wmic.exe
Token: SeRemoteShutdownPrivilege	2716	wmic.exe
Token: SeUndockPrivilege	2716	wmic.exe
Token: SeManageVolumePrivilege	2716	wmic.exe
Token: 33	2716	wmic.exe
Token: 34	2716	wmic.exe
Token: 35	2716	wmic.exe
Token: SeIncreaseQuotaPrivilege	2716	wmic.exe
Token: SeSecurityPrivilege	2716	wmic.exe
Token: SeTakeOwnershipPrivilege	2716	wmic.exe
Token: SeLoadDriverPrivilege	2716	wmic.exe
Token: SeSystemProfilePrivilege	2716	wmic.exe
Token: SeSystemtimePrivilege	2716	wmic.exe
Token: SeProfSingleProcessPrivilege	2716	wmic.exe
Token: SeIncBasePriorityPrivilege	2716	wmic.exe
Token: SeCreatePagefilePrivilege	2716	wmic.exe
Token: SeBackupPrivilege	2716	wmic.exe
Token: SeRestorePrivilege	2716	wmic.exe
Token: SeShutdownPrivilege	2716	wmic.exe
Token: SeDebugPrivilege	2716	wmic.exe
Token: SeSystemEnvironmentPrivilege	2716	wmic.exe
Token: SeRemoteShutdownPrivilege	2716	wmic.exe
Token: SeUndockPrivilege	2716	wmic.exe
Token: SeManageVolumePrivilege	2716	wmic.exe
Token: 33	2716	wmic.exe
Token: 34	2716	wmic.exe
Token: 35	2716	wmic.exe
Token: SeDebugPrivilege	2228	powershell.exe
Token: SeDebugPrivilege	2636	powershell.exe
Token: SeDebugPrivilege	2092	powershell.exe
Token: SeDebugPrivilege	2860	powershell.exe
Token: SeIncreaseQuotaPrivilege	704	wmic.exe
Token: SeSecurityPrivilege	704	wmic.exe
Token: SeTakeOwnershipPrivilege	704	wmic.exe
Token: SeLoadDriverPrivilege	704	wmic.exe
Token: SeSystemProfilePrivilege	704	wmic.exe
Token: SeSystemtimePrivilege	704	wmic.exe
Token: SeProfSingleProcessPrivilege	704	wmic.exe
Token: SeIncBasePriorityPrivilege	704	wmic.exe
Token: SeCreatePagefilePrivilege	704	wmic.exe
Token: SeBackupPrivilege	704	wmic.exe
Token: SeRestorePrivilege	704	wmic.exe
Token: SeShutdownPrivilege	704	wmic.exe
Token: SeDebugPrivilege	704	wmic.exe
Token: SeSystemEnvironmentPrivilege	704	wmic.exe
Token: SeRemoteShutdownPrivilege	704	wmic.exe
Token: SeUndockPrivilege	704	wmic.exe
Token: SeManageVolumePrivilege	704	wmic.exe
Token: 33	704	wmic.exe
Token: 34	704	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2948 wrote to memory of 2716	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	30
PID 2948 wrote to memory of 2716	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	30
PID 2948 wrote to memory of 2716	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	30
PID 2948 wrote to memory of 2740	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	33
PID 2948 wrote to memory of 2740	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	33
PID 2948 wrote to memory of 2740	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	33
PID 2948 wrote to memory of 2228	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	35
PID 2948 wrote to memory of 2228	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	35
PID 2948 wrote to memory of 2228	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	35
PID 2948 wrote to memory of 2636	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	37
PID 2948 wrote to memory of 2636	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	37
PID 2948 wrote to memory of 2636	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	37
PID 2948 wrote to memory of 2092	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	39
PID 2948 wrote to memory of 2092	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	39
PID 2948 wrote to memory of 2092	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	39
PID 2948 wrote to memory of 2860	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	41
PID 2948 wrote to memory of 2860	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	41
PID 2948 wrote to memory of 2860	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	41
PID 2948 wrote to memory of 704	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	43
PID 2948 wrote to memory of 704	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	43
PID 2948 wrote to memory of 704	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	43
PID 2948 wrote to memory of 264	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	45
PID 2948 wrote to memory of 264	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	45
PID 2948 wrote to memory of 264	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	45
PID 2948 wrote to memory of 1132	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	47
PID 2948 wrote to memory of 1132	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	47
PID 2948 wrote to memory of 1132	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	47
PID 2948 wrote to memory of 1480	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	49
PID 2948 wrote to memory of 1480	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	49
PID 2948 wrote to memory of 1480	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	49
PID 2948 wrote to memory of 1712	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	51
PID 2948 wrote to memory of 1712	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	51
PID 2948 wrote to memory of 1712	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	51
PID 2948 wrote to memory of 2084	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	53
PID 2948 wrote to memory of 2084	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	53
PID 2948 wrote to memory of 2084	2948	db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe	53
PID 2084 wrote to memory of 2340	2084	cmd.exe	55
PID 2084 wrote to memory of 2340	2084	cmd.exe	55
PID 2084 wrote to memory of 2340	2084	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2740	attrib.exe

C:\Users\Admin\AppData\Local\Temp\db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe
"C:\Users\Admin\AppData\Local\Temp\db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2948
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2716
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe"
  2⤵
  - Views/modifies file attributes
  PID:2740
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2228
- 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:2636
- 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:2092
- 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:2860
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:704
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:264
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1132
- 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:1480
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1712
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\db50a547a9159e1075ff42944ae9c3676e7dee572237f05de0ab0fcf8448ab69N.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2084
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2340

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\KGYAM24AVQZTR3RU6QLI.temp

Filesize
7KB

MD5
b2a4ab90c3635b8de47dadeafb7f9974

SHA1
7b729b909e0bf0ee131ab733828330ae1850c0f7

SHA256
2b69472c44d707bd9c1db4aa74d4e02515010f7840d367ce8752fa6a48444994

SHA512
3b43489d764edc7619bcb96418253a0f23d0981b564ea75b1b323a456805a0ec0bbd01ae795ff0ef821f05ad41b35322ca653fbfdd9b020474ce755f272d5a3e

Download Submit
memory/1480-44-0x0000000002340000-0x0000000002348000-memory.dmp

Filesize
32KB

Download
memory/2228-7-0x000000001B630000-0x000000001B912000-memory.dmp

Filesize
2.9MB

Download
memory/2228-8-0x0000000002310000-0x0000000002318000-memory.dmp

Filesize
32KB

Download
memory/2636-14-0x000000001B7E0000-0x000000001BAC2000-memory.dmp

Filesize
2.9MB

Download
memory/2636-15-0x0000000001E10000-0x0000000001E18000-memory.dmp

Filesize
32KB

Download
memory/2948-0-0x000007FEF5783000-0x000007FEF5784000-memory.dmp

Filesize
4KB

Download
memory/2948-1-0x0000000000F70000-0x0000000000FB0000-memory.dmp

Filesize
256KB

Download
memory/2948-2-0x000007FEF5780000-0x000007FEF616C000-memory.dmp

Filesize
9.9MB

Download
memory/2948-48-0x000007FEF5780000-0x000007FEF616C000-memory.dmp

Filesize
9.9MB

Download