umbral | 03b53c8510e8b55a7b678839a8a49afc8951558e965fa6694357601ddb41b4e9

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22-02-2025 01:33

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General

Target

zzz.exe
Size

227KB
MD5

45edc39982861c2c66ca275475a2b1b7
SHA1

7cc1e53f8065fc7344351c33477a64e75283fbf9
SHA256

03b53c8510e8b55a7b678839a8a49afc8951558e965fa6694357601ddb41b4e9
SHA512

3f91eec3726d384570ff43dbc0dea43938f48e44eea8cf2f0aa04799bbf69f63eeb4c4d6e151dfbec733833526920b36e8a5bd8807395711cfbec3dfe92a0288
SSDEEP

6144:+loZM9rIkd8g+EtXHkv/iD4751srRiK1qwBzOurl4b8e1mZi:ooZOL+EP8751srRiK1qwBzOur2b

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2392-1-0x0000000001300000-0x0000000001340000-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

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2916	powershell.exe
1940	powershell.exe
316	powershell.exe
2508	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Deletes itself 1 IoCs

pid	Process
2280	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
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

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
2280	cmd.exe
2476	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2860	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2476	PING.EXE

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2508	powershell.exe
2916	powershell.exe
1940	powershell.exe
2052	powershell.exe
316	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2392	zzz.exe
Token: SeDebugPrivilege	2508	powershell.exe
Token: SeDebugPrivilege	2916	powershell.exe
Token: SeDebugPrivilege	1940	powershell.exe
Token: SeDebugPrivilege	2052	powershell.exe
Token: SeIncreaseQuotaPrivilege	1380	wmic.exe
Token: SeSecurityPrivilege	1380	wmic.exe
Token: SeTakeOwnershipPrivilege	1380	wmic.exe
Token: SeLoadDriverPrivilege	1380	wmic.exe
Token: SeSystemProfilePrivilege	1380	wmic.exe
Token: SeSystemtimePrivilege	1380	wmic.exe
Token: SeProfSingleProcessPrivilege	1380	wmic.exe
Token: SeIncBasePriorityPrivilege	1380	wmic.exe
Token: SeCreatePagefilePrivilege	1380	wmic.exe
Token: SeBackupPrivilege	1380	wmic.exe
Token: SeRestorePrivilege	1380	wmic.exe
Token: SeShutdownPrivilege	1380	wmic.exe
Token: SeDebugPrivilege	1380	wmic.exe
Token: SeSystemEnvironmentPrivilege	1380	wmic.exe
Token: SeRemoteShutdownPrivilege	1380	wmic.exe
Token: SeUndockPrivilege	1380	wmic.exe
Token: SeManageVolumePrivilege	1380	wmic.exe
Token: 33	1380	wmic.exe
Token: 34	1380	wmic.exe
Token: 35	1380	wmic.exe
Token: SeIncreaseQuotaPrivilege	1380	wmic.exe
Token: SeSecurityPrivilege	1380	wmic.exe
Token: SeTakeOwnershipPrivilege	1380	wmic.exe
Token: SeLoadDriverPrivilege	1380	wmic.exe
Token: SeSystemProfilePrivilege	1380	wmic.exe
Token: SeSystemtimePrivilege	1380	wmic.exe
Token: SeProfSingleProcessPrivilege	1380	wmic.exe
Token: SeIncBasePriorityPrivilege	1380	wmic.exe
Token: SeCreatePagefilePrivilege	1380	wmic.exe
Token: SeBackupPrivilege	1380	wmic.exe
Token: SeRestorePrivilege	1380	wmic.exe
Token: SeShutdownPrivilege	1380	wmic.exe
Token: SeDebugPrivilege	1380	wmic.exe
Token: SeSystemEnvironmentPrivilege	1380	wmic.exe
Token: SeRemoteShutdownPrivilege	1380	wmic.exe
Token: SeUndockPrivilege	1380	wmic.exe
Token: SeManageVolumePrivilege	1380	wmic.exe
Token: 33	1380	wmic.exe
Token: 34	1380	wmic.exe
Token: 35	1380	wmic.exe
Token: SeIncreaseQuotaPrivilege	2144	wmic.exe
Token: SeSecurityPrivilege	2144	wmic.exe
Token: SeTakeOwnershipPrivilege	2144	wmic.exe
Token: SeLoadDriverPrivilege	2144	wmic.exe
Token: SeSystemProfilePrivilege	2144	wmic.exe
Token: SeSystemtimePrivilege	2144	wmic.exe
Token: SeProfSingleProcessPrivilege	2144	wmic.exe
Token: SeIncBasePriorityPrivilege	2144	wmic.exe
Token: SeCreatePagefilePrivilege	2144	wmic.exe
Token: SeBackupPrivilege	2144	wmic.exe
Token: SeRestorePrivilege	2144	wmic.exe
Token: SeShutdownPrivilege	2144	wmic.exe
Token: SeDebugPrivilege	2144	wmic.exe
Token: SeSystemEnvironmentPrivilege	2144	wmic.exe
Token: SeRemoteShutdownPrivilege	2144	wmic.exe
Token: SeUndockPrivilege	2144	wmic.exe
Token: SeManageVolumePrivilege	2144	wmic.exe
Token: 33	2144	wmic.exe
Token: 34	2144	wmic.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2392 wrote to memory of 2952	2392	zzz.exe	30
PID 2392 wrote to memory of 2952	2392	zzz.exe	30
PID 2392 wrote to memory of 2952	2392	zzz.exe	30
PID 2392 wrote to memory of 2508	2392	zzz.exe	33
PID 2392 wrote to memory of 2508	2392	zzz.exe	33
PID 2392 wrote to memory of 2508	2392	zzz.exe	33
PID 2392 wrote to memory of 2916	2392	zzz.exe	35
PID 2392 wrote to memory of 2916	2392	zzz.exe	35
PID 2392 wrote to memory of 2916	2392	zzz.exe	35
PID 2392 wrote to memory of 1940	2392	zzz.exe	37
PID 2392 wrote to memory of 1940	2392	zzz.exe	37
PID 2392 wrote to memory of 1940	2392	zzz.exe	37
PID 2392 wrote to memory of 2052	2392	zzz.exe	39
PID 2392 wrote to memory of 2052	2392	zzz.exe	39
PID 2392 wrote to memory of 2052	2392	zzz.exe	39
PID 2392 wrote to memory of 1380	2392	zzz.exe	41
PID 2392 wrote to memory of 1380	2392	zzz.exe	41
PID 2392 wrote to memory of 1380	2392	zzz.exe	41
PID 2392 wrote to memory of 2144	2392	zzz.exe	44
PID 2392 wrote to memory of 2144	2392	zzz.exe	44
PID 2392 wrote to memory of 2144	2392	zzz.exe	44
PID 2392 wrote to memory of 1228	2392	zzz.exe	46
PID 2392 wrote to memory of 1228	2392	zzz.exe	46
PID 2392 wrote to memory of 1228	2392	zzz.exe	46
PID 2392 wrote to memory of 316	2392	zzz.exe	48
PID 2392 wrote to memory of 316	2392	zzz.exe	48
PID 2392 wrote to memory of 316	2392	zzz.exe	48
PID 2392 wrote to memory of 2860	2392	zzz.exe	50
PID 2392 wrote to memory of 2860	2392	zzz.exe	50
PID 2392 wrote to memory of 2860	2392	zzz.exe	50
PID 2392 wrote to memory of 2280	2392	zzz.exe	52
PID 2392 wrote to memory of 2280	2392	zzz.exe	52
PID 2392 wrote to memory of 2280	2392	zzz.exe	52
PID 2280 wrote to memory of 2476	2280	cmd.exe	54
PID 2280 wrote to memory of 2476	2280	cmd.exe	54
PID 2280 wrote to memory of 2476	2280	cmd.exe	54

Views/modifies file attributes 1 TTPs 1 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
2952	attrib.exe

C:\Users\Admin\AppData\Local\Temp\zzz.exe
"C:\Users\Admin\AppData\Local\Temp\zzz.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2392
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\zzz.exe"
  2⤵
  - Views/modifies file attributes
  PID:2952
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\zzz.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2508
- 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:2916
- 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:1940
- 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:2052
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1380
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2144
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1228
- 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:316
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2860
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\zzz.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2280
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2476

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\P6SLW3RJOZZCZUHKADWA.temp

Filesize
7KB

MD5
1237fafdd11de97e1a3f0c9288917bcf

SHA1
416e6c55afd847f8bf04e6b7fdc12c3114cbec46

SHA256
14e0dfeeeeb29a56a6cd0cbc94916f5333b5f1f1fbcb25c06dac5d407fd69025

SHA512
d33446798fba63f3cc29bac43c7db094de66aa96b29973968c00c2f568ccc16489f43d67e3fd0a378a95dec894361955c7169c3edacb33700f11dab2bd471f89

Download Submit
memory/316-49-0x000000001B6B0000-0x000000001B992000-memory.dmp

Filesize
2.9MB

Download
memory/2392-1-0x0000000001300000-0x0000000001340000-memory.dmp

Filesize
256KB

Download
memory/2392-2-0x000007FEF57A0000-0x000007FEF618C000-memory.dmp

Filesize
9.9MB

Download
memory/2392-55-0x000007FEF57A0000-0x000007FEF618C000-memory.dmp

Filesize
9.9MB

Download
memory/2392-52-0x000007FEF57A0000-0x000007FEF618C000-memory.dmp

Filesize
9.9MB

Download
memory/2392-51-0x000007FEF57A3000-0x000007FEF57A4000-memory.dmp

Filesize
4KB

Download
memory/2392-0-0x000007FEF57A3000-0x000007FEF57A4000-memory.dmp

Filesize
4KB

Download
memory/2508-11-0x000007FEECE60000-0x000007FEED7FD000-memory.dmp

Filesize
9.6MB

Download
memory/2508-14-0x000007FEECE60000-0x000007FEED7FD000-memory.dmp

Filesize
9.6MB

Download
memory/2508-13-0x000007FEECE60000-0x000007FEED7FD000-memory.dmp

Filesize
9.6MB

Download
memory/2508-12-0x000007FEECE60000-0x000007FEED7FD000-memory.dmp

Filesize
9.6MB

Download
memory/2508-10-0x000007FEECE60000-0x000007FEED7FD000-memory.dmp

Filesize
9.6MB

Download
memory/2508-8-0x000000001B730000-0x000000001BA12000-memory.dmp

Filesize
2.9MB

Download
memory/2508-9-0x0000000001EF0000-0x0000000001EF8000-memory.dmp

Filesize
32KB

Download
memory/2508-7-0x000007FEED11E000-0x000007FEED11F000-memory.dmp

Filesize
4KB

Download
memory/2916-20-0x000000001B650000-0x000000001B932000-memory.dmp

Filesize
2.9MB

Download
memory/2916-21-0x0000000002240000-0x0000000002248000-memory.dmp

Filesize
32KB

Download