umbral | c2caa0fa4a868c131c9139635dd57f67ec1bba9283ab4b0a121fdff5a4a21082

Analysis

max time kernel
1565s
max time network
1567s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
07-06-2024 19:22

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

TEST.exe
Size

229KB
MD5

9dc985d83754309760ae45747d8081c2
SHA1

b60e1c39ee8da20c5bdf1df501fab12fd45eaf50
SHA256

f3fdf0137c30af49a71a174e204795a0b96ef2a8a0a53fda4add34574f79005b
SHA512

d0908c5e493bd83cd58e73b715c9318cb6032bb388d7c6ffbdc75b4bb813e594153a57e2ecebbe0a2d1aa0513312be16886b08ad8b91fc590217838057a730cf
SSDEEP

6144:tloZM+rIkd8g+EtXHkv/iD4hYBSGELnsmd42X3WVzb8e1mzi:voZtL+EP8hYBSGELnsmd42X3WtB

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2952-1-0x0000000000BA0000-0x0000000000BE0000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
1736	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2828	wmic.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1736	powershell.exe
1284	powershell.exe
2484	powershell.exe
3004	powershell.exe
2772	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2952	TEST.exe
Token: SeDebugPrivilege	1736	powershell.exe
Token: SeDebugPrivilege	1284	powershell.exe
Token: SeDebugPrivilege	2484	powershell.exe
Token: SeDebugPrivilege	3004	powershell.exe
Token: SeIncreaseQuotaPrivilege	2988	wmic.exe
Token: SeSecurityPrivilege	2988	wmic.exe
Token: SeTakeOwnershipPrivilege	2988	wmic.exe
Token: SeLoadDriverPrivilege	2988	wmic.exe
Token: SeSystemProfilePrivilege	2988	wmic.exe
Token: SeSystemtimePrivilege	2988	wmic.exe
Token: SeProfSingleProcessPrivilege	2988	wmic.exe
Token: SeIncBasePriorityPrivilege	2988	wmic.exe
Token: SeCreatePagefilePrivilege	2988	wmic.exe
Token: SeBackupPrivilege	2988	wmic.exe
Token: SeRestorePrivilege	2988	wmic.exe
Token: SeShutdownPrivilege	2988	wmic.exe
Token: SeDebugPrivilege	2988	wmic.exe
Token: SeSystemEnvironmentPrivilege	2988	wmic.exe
Token: SeRemoteShutdownPrivilege	2988	wmic.exe
Token: SeUndockPrivilege	2988	wmic.exe
Token: SeManageVolumePrivilege	2988	wmic.exe
Token: 33	2988	wmic.exe
Token: 34	2988	wmic.exe
Token: 35	2988	wmic.exe
Token: SeIncreaseQuotaPrivilege	2988	wmic.exe
Token: SeSecurityPrivilege	2988	wmic.exe
Token: SeTakeOwnershipPrivilege	2988	wmic.exe
Token: SeLoadDriverPrivilege	2988	wmic.exe
Token: SeSystemProfilePrivilege	2988	wmic.exe
Token: SeSystemtimePrivilege	2988	wmic.exe
Token: SeProfSingleProcessPrivilege	2988	wmic.exe
Token: SeIncBasePriorityPrivilege	2988	wmic.exe
Token: SeCreatePagefilePrivilege	2988	wmic.exe
Token: SeBackupPrivilege	2988	wmic.exe
Token: SeRestorePrivilege	2988	wmic.exe
Token: SeShutdownPrivilege	2988	wmic.exe
Token: SeDebugPrivilege	2988	wmic.exe
Token: SeSystemEnvironmentPrivilege	2988	wmic.exe
Token: SeRemoteShutdownPrivilege	2988	wmic.exe
Token: SeUndockPrivilege	2988	wmic.exe
Token: SeManageVolumePrivilege	2988	wmic.exe
Token: 33	2988	wmic.exe
Token: 34	2988	wmic.exe
Token: 35	2988	wmic.exe
Token: SeIncreaseQuotaPrivilege	1748	wmic.exe
Token: SeSecurityPrivilege	1748	wmic.exe
Token: SeTakeOwnershipPrivilege	1748	wmic.exe
Token: SeLoadDriverPrivilege	1748	wmic.exe
Token: SeSystemProfilePrivilege	1748	wmic.exe
Token: SeSystemtimePrivilege	1748	wmic.exe
Token: SeProfSingleProcessPrivilege	1748	wmic.exe
Token: SeIncBasePriorityPrivilege	1748	wmic.exe
Token: SeCreatePagefilePrivilege	1748	wmic.exe
Token: SeBackupPrivilege	1748	wmic.exe
Token: SeRestorePrivilege	1748	wmic.exe
Token: SeShutdownPrivilege	1748	wmic.exe
Token: SeDebugPrivilege	1748	wmic.exe
Token: SeSystemEnvironmentPrivilege	1748	wmic.exe
Token: SeRemoteShutdownPrivilege	1748	wmic.exe
Token: SeUndockPrivilege	1748	wmic.exe
Token: SeManageVolumePrivilege	1748	wmic.exe
Token: 33	1748	wmic.exe
Token: 34	1748	wmic.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2952 wrote to memory of 1736	2952	TEST.exe	28
PID 2952 wrote to memory of 1736	2952	TEST.exe	28
PID 2952 wrote to memory of 1736	2952	TEST.exe	28
PID 2952 wrote to memory of 1284	2952	TEST.exe	30
PID 2952 wrote to memory of 1284	2952	TEST.exe	30
PID 2952 wrote to memory of 1284	2952	TEST.exe	30
PID 2952 wrote to memory of 2484	2952	TEST.exe	32
PID 2952 wrote to memory of 2484	2952	TEST.exe	32
PID 2952 wrote to memory of 2484	2952	TEST.exe	32
PID 2952 wrote to memory of 3004	2952	TEST.exe	34
PID 2952 wrote to memory of 3004	2952	TEST.exe	34
PID 2952 wrote to memory of 3004	2952	TEST.exe	34
PID 2952 wrote to memory of 2988	2952	TEST.exe	36
PID 2952 wrote to memory of 2988	2952	TEST.exe	36
PID 2952 wrote to memory of 2988	2952	TEST.exe	36
PID 2952 wrote to memory of 1748	2952	TEST.exe	39
PID 2952 wrote to memory of 1748	2952	TEST.exe	39
PID 2952 wrote to memory of 1748	2952	TEST.exe	39
PID 2952 wrote to memory of 2424	2952	TEST.exe	41
PID 2952 wrote to memory of 2424	2952	TEST.exe	41
PID 2952 wrote to memory of 2424	2952	TEST.exe	41
PID 2952 wrote to memory of 2772	2952	TEST.exe	43
PID 2952 wrote to memory of 2772	2952	TEST.exe	43
PID 2952 wrote to memory of 2772	2952	TEST.exe	43
PID 2952 wrote to memory of 2828	2952	TEST.exe	45
PID 2952 wrote to memory of 2828	2952	TEST.exe	45
PID 2952 wrote to memory of 2828	2952	TEST.exe	45

C:\Users\Admin\AppData\Local\Temp\TEST.exe
"C:\Users\Admin\AppData\Local\Temp\TEST.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2952
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\TEST.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1736
- 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⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1284
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2484
- 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:3004
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2988
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1748
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2424
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:2772
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2828

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

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\3DGZQ2Y6PYIYSZ92PJIC.temp

Filesize
7KB

MD5
d96f8f282a204615d3e05e1ea32c6b54

SHA1
502838561e7452c4fd62320b7e48954670b2f247

SHA256
ca8c5d9dd9d54c688e7b3fc6e8a79710ded88fe2eb7e3098b32c562fde7c2969

SHA512
a99b96fc32d52d8bfae92706e4dc2e691401d9aff805520f7a3d05d87947f8f4322c0ab2cd100c31fd5827eff55da34b3983a7b83c3bc5f57551df386b910507

Download Submit
memory/1284-21-0x000000001B5C0000-0x000000001B8A2000-memory.dmp

Filesize
2.9MB

Download
memory/1284-22-0x0000000001E20000-0x0000000001E28000-memory.dmp

Filesize
32KB

Download
memory/1736-8-0x000000001B800000-0x000000001BAE2000-memory.dmp

Filesize
2.9MB

Download
memory/1736-14-0x000007FEEDDD0000-0x000007FEEE76D000-memory.dmp

Filesize
9.6MB

Download
memory/1736-9-0x0000000001DE0000-0x0000000001DE8000-memory.dmp

Filesize
32KB

Download
memory/1736-10-0x000007FEEDDD0000-0x000007FEEE76D000-memory.dmp

Filesize
9.6MB

Download
memory/1736-11-0x000007FEEDDD0000-0x000007FEEE76D000-memory.dmp

Filesize
9.6MB

Download
memory/1736-12-0x000007FEEDDD0000-0x000007FEEE76D000-memory.dmp

Filesize
9.6MB

Download
memory/1736-13-0x000007FEEDDD0000-0x000007FEEE76D000-memory.dmp

Filesize
9.6MB

Download
memory/1736-7-0x000007FEEE08E000-0x000007FEEE08F000-memory.dmp

Filesize
4KB

Download
memory/1736-15-0x000007FEEDDD0000-0x000007FEEE76D000-memory.dmp

Filesize
9.6MB

Download
memory/2772-46-0x000000001B6E0000-0x000000001B9C2000-memory.dmp

Filesize
2.9MB

Download
memory/2952-0-0x000007FEF5CB3000-0x000007FEF5CB4000-memory.dmp

Filesize
4KB

Download
memory/2952-2-0x000007FEF5CB0000-0x000007FEF669C000-memory.dmp

Filesize
9.9MB

Download
memory/2952-1-0x0000000000BA0000-0x0000000000BE0000-memory.dmp

Filesize
256KB

Download
memory/2952-49-0x000007FEF5CB0000-0x000007FEF669C000-memory.dmp

Filesize
9.9MB

Download