umbral | a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
13-12-2024 07:15

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General

Target

230f75b72d5021a921637929a63cfd79.exe
Size

231KB
MD5

230f75b72d5021a921637929a63cfd79
SHA1

71af2ee3489d49914f7c7fa4e16e8398e97e0fc8
SHA256

a5011c165dbd8459396a3b4f901c7faa668e95e395fb12d7c967c34c0d974355
SHA512

3dc11aac2231daf30871d30f43eba3eadf14f3b003dd1f81466cde021b0b59d38c5e9a320e6705b4f5a0eeebf93f9ee5459173e20de2ab3ae3f3e9988819f001
SSDEEP

6144:xloZMUrIkd8g+EtXHkv/iD4b3gulGELnsyd42X3Wc8b8e1mDQi:DoZrL+EP8b3gulGELnsyd42X3WxYJ

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2264-1-0x0000000000980000-0x00000000009C0000-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
1940	powershell.exe
1228	powershell.exe
328	powershell.exe
2716	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	230f75b72d5021a921637929a63cfd79.exe

Deletes itself 1 IoCs

pid	Process
1632	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
848	PING.EXE
1632	cmd.exe

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1688	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
848	PING.EXE

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2716	powershell.exe
1940	powershell.exe
1228	powershell.exe
2560	powershell.exe
328	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2264	230f75b72d5021a921637929a63cfd79.exe
Token: SeDebugPrivilege	2716	powershell.exe
Token: SeDebugPrivilege	1940	powershell.exe
Token: SeDebugPrivilege	1228	powershell.exe
Token: SeDebugPrivilege	2560	powershell.exe
Token: SeIncreaseQuotaPrivilege	296	wmic.exe
Token: SeSecurityPrivilege	296	wmic.exe
Token: SeTakeOwnershipPrivilege	296	wmic.exe
Token: SeLoadDriverPrivilege	296	wmic.exe
Token: SeSystemProfilePrivilege	296	wmic.exe
Token: SeSystemtimePrivilege	296	wmic.exe
Token: SeProfSingleProcessPrivilege	296	wmic.exe
Token: SeIncBasePriorityPrivilege	296	wmic.exe
Token: SeCreatePagefilePrivilege	296	wmic.exe
Token: SeBackupPrivilege	296	wmic.exe
Token: SeRestorePrivilege	296	wmic.exe
Token: SeShutdownPrivilege	296	wmic.exe
Token: SeDebugPrivilege	296	wmic.exe
Token: SeSystemEnvironmentPrivilege	296	wmic.exe
Token: SeRemoteShutdownPrivilege	296	wmic.exe
Token: SeUndockPrivilege	296	wmic.exe
Token: SeManageVolumePrivilege	296	wmic.exe
Token: 33	296	wmic.exe
Token: 34	296	wmic.exe
Token: 35	296	wmic.exe
Token: SeIncreaseQuotaPrivilege	296	wmic.exe
Token: SeSecurityPrivilege	296	wmic.exe
Token: SeTakeOwnershipPrivilege	296	wmic.exe
Token: SeLoadDriverPrivilege	296	wmic.exe
Token: SeSystemProfilePrivilege	296	wmic.exe
Token: SeSystemtimePrivilege	296	wmic.exe
Token: SeProfSingleProcessPrivilege	296	wmic.exe
Token: SeIncBasePriorityPrivilege	296	wmic.exe
Token: SeCreatePagefilePrivilege	296	wmic.exe
Token: SeBackupPrivilege	296	wmic.exe
Token: SeRestorePrivilege	296	wmic.exe
Token: SeShutdownPrivilege	296	wmic.exe
Token: SeDebugPrivilege	296	wmic.exe
Token: SeSystemEnvironmentPrivilege	296	wmic.exe
Token: SeRemoteShutdownPrivilege	296	wmic.exe
Token: SeUndockPrivilege	296	wmic.exe
Token: SeManageVolumePrivilege	296	wmic.exe
Token: 33	296	wmic.exe
Token: 34	296	wmic.exe
Token: 35	296	wmic.exe
Token: SeIncreaseQuotaPrivilege	1916	wmic.exe
Token: SeSecurityPrivilege	1916	wmic.exe
Token: SeTakeOwnershipPrivilege	1916	wmic.exe
Token: SeLoadDriverPrivilege	1916	wmic.exe
Token: SeSystemProfilePrivilege	1916	wmic.exe
Token: SeSystemtimePrivilege	1916	wmic.exe
Token: SeProfSingleProcessPrivilege	1916	wmic.exe
Token: SeIncBasePriorityPrivilege	1916	wmic.exe
Token: SeCreatePagefilePrivilege	1916	wmic.exe
Token: SeBackupPrivilege	1916	wmic.exe
Token: SeRestorePrivilege	1916	wmic.exe
Token: SeShutdownPrivilege	1916	wmic.exe
Token: SeDebugPrivilege	1916	wmic.exe
Token: SeSystemEnvironmentPrivilege	1916	wmic.exe
Token: SeRemoteShutdownPrivilege	1916	wmic.exe
Token: SeUndockPrivilege	1916	wmic.exe
Token: SeManageVolumePrivilege	1916	wmic.exe
Token: 33	1916	wmic.exe
Token: 34	1916	wmic.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2264 wrote to memory of 3060	2264	230f75b72d5021a921637929a63cfd79.exe	30
PID 2264 wrote to memory of 3060	2264	230f75b72d5021a921637929a63cfd79.exe	30
PID 2264 wrote to memory of 3060	2264	230f75b72d5021a921637929a63cfd79.exe	30
PID 2264 wrote to memory of 2716	2264	230f75b72d5021a921637929a63cfd79.exe	32
PID 2264 wrote to memory of 2716	2264	230f75b72d5021a921637929a63cfd79.exe	32
PID 2264 wrote to memory of 2716	2264	230f75b72d5021a921637929a63cfd79.exe	32
PID 2264 wrote to memory of 1940	2264	230f75b72d5021a921637929a63cfd79.exe	34
PID 2264 wrote to memory of 1940	2264	230f75b72d5021a921637929a63cfd79.exe	34
PID 2264 wrote to memory of 1940	2264	230f75b72d5021a921637929a63cfd79.exe	34
PID 2264 wrote to memory of 1228	2264	230f75b72d5021a921637929a63cfd79.exe	36
PID 2264 wrote to memory of 1228	2264	230f75b72d5021a921637929a63cfd79.exe	36
PID 2264 wrote to memory of 1228	2264	230f75b72d5021a921637929a63cfd79.exe	36
PID 2264 wrote to memory of 2560	2264	230f75b72d5021a921637929a63cfd79.exe	38
PID 2264 wrote to memory of 2560	2264	230f75b72d5021a921637929a63cfd79.exe	38
PID 2264 wrote to memory of 2560	2264	230f75b72d5021a921637929a63cfd79.exe	38
PID 2264 wrote to memory of 296	2264	230f75b72d5021a921637929a63cfd79.exe	40
PID 2264 wrote to memory of 296	2264	230f75b72d5021a921637929a63cfd79.exe	40
PID 2264 wrote to memory of 296	2264	230f75b72d5021a921637929a63cfd79.exe	40
PID 2264 wrote to memory of 1916	2264	230f75b72d5021a921637929a63cfd79.exe	43
PID 2264 wrote to memory of 1916	2264	230f75b72d5021a921637929a63cfd79.exe	43
PID 2264 wrote to memory of 1916	2264	230f75b72d5021a921637929a63cfd79.exe	43
PID 2264 wrote to memory of 2676	2264	230f75b72d5021a921637929a63cfd79.exe	45
PID 2264 wrote to memory of 2676	2264	230f75b72d5021a921637929a63cfd79.exe	45
PID 2264 wrote to memory of 2676	2264	230f75b72d5021a921637929a63cfd79.exe	45
PID 2264 wrote to memory of 328	2264	230f75b72d5021a921637929a63cfd79.exe	47
PID 2264 wrote to memory of 328	2264	230f75b72d5021a921637929a63cfd79.exe	47
PID 2264 wrote to memory of 328	2264	230f75b72d5021a921637929a63cfd79.exe	47
PID 2264 wrote to memory of 1688	2264	230f75b72d5021a921637929a63cfd79.exe	49
PID 2264 wrote to memory of 1688	2264	230f75b72d5021a921637929a63cfd79.exe	49
PID 2264 wrote to memory of 1688	2264	230f75b72d5021a921637929a63cfd79.exe	49
PID 2264 wrote to memory of 1632	2264	230f75b72d5021a921637929a63cfd79.exe	51
PID 2264 wrote to memory of 1632	2264	230f75b72d5021a921637929a63cfd79.exe	51
PID 2264 wrote to memory of 1632	2264	230f75b72d5021a921637929a63cfd79.exe	51
PID 1632 wrote to memory of 848	1632	cmd.exe	53
PID 1632 wrote to memory of 848	1632	cmd.exe	53
PID 1632 wrote to memory of 848	1632	cmd.exe	53

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3060	attrib.exe

C:\Users\Admin\AppData\Local\Temp\230f75b72d5021a921637929a63cfd79.exe
"C:\Users\Admin\AppData\Local\Temp\230f75b72d5021a921637929a63cfd79.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2264
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\230f75b72d5021a921637929a63cfd79.exe"
  2⤵
  - Views/modifies file attributes
  PID:3060
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\230f75b72d5021a921637929a63cfd79.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2716
- 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:1940
- 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:1228
- 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:2560
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:296
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1916
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2676
- 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:328
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1688
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\230f75b72d5021a921637929a63cfd79.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1632
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:848

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
a79b1af2dc1c9c57fcb71790de98b64a

SHA1
90e09f14599ceb7b1f12ab62dacbe3ee37562738

SHA256
e5934d052d28d01eca884fec57491829c2e7b29caba14ca21c19f636580231c4

SHA512
32859c56f6e85d7f286a617ffa262ff5fd54329153b505f4848fb0fc2651dbdbb3069231a070c0b28131b20e4dcf48809aa70ce1b8fc638f794f719f2624d5e6

Download Submit
memory/1940-22-0x00000000027A0000-0x00000000027A8000-memory.dmp

Filesize
32KB

Download
memory/1940-21-0x000000001B710000-0x000000001B9F2000-memory.dmp

Filesize
2.9MB

Download
memory/2264-1-0x0000000000980000-0x00000000009C0000-memory.dmp

Filesize
256KB

Download
memory/2264-2-0x000007FEF6850000-0x000007FEF723C000-memory.dmp

Filesize
9.9MB

Download
memory/2264-51-0x000007FEF6850000-0x000007FEF723C000-memory.dmp

Filesize
9.9MB

Download
memory/2264-0-0x000007FEF6853000-0x000007FEF6854000-memory.dmp

Filesize
4KB

Download
memory/2716-11-0x000007FEED6B0000-0x000007FEEE04D000-memory.dmp

Filesize
9.6MB

Download
memory/2716-12-0x000007FEED6B0000-0x000007FEEE04D000-memory.dmp

Filesize
9.6MB

Download
memory/2716-13-0x000007FEED6B0000-0x000007FEEE04D000-memory.dmp

Filesize
9.6MB

Download
memory/2716-14-0x000007FEED6B0000-0x000007FEEE04D000-memory.dmp

Filesize
9.6MB

Download
memory/2716-15-0x000007FEED6B0000-0x000007FEEE04D000-memory.dmp

Filesize
9.6MB

Download
memory/2716-8-0x000000001B8F0000-0x000000001BBD2000-memory.dmp

Filesize
2.9MB

Download
memory/2716-9-0x000007FEED6B0000-0x000007FEEE04D000-memory.dmp

Filesize
9.6MB

Download
memory/2716-10-0x0000000001D80000-0x0000000001D88000-memory.dmp

Filesize
32KB

Download
memory/2716-7-0x000007FEED96E000-0x000007FEED96F000-memory.dmp

Filesize
4KB

Download