umbral | 1ab54a5786eeedb01e74215a50a796fefbd12c47c0b864b1be5f6d45a2951bf4

Analysis

max time kernel
16s
max time network
16s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
08-08-2024 16:35

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General

Target

uhm, uhh.exe
Size

229KB
MD5

0d407796194f47dd4739950f347631dc
SHA1

2e843294cd4ccbdcb53b0ca4cdcb0d6640d75615
SHA256

1ab54a5786eeedb01e74215a50a796fefbd12c47c0b864b1be5f6d45a2951bf4
SHA512

b70550be02cc4b622fa35c0189884104a2b6719e8b593e156b74874cffc835a906df3b746b2247c2bffffbb47be6470ba3ac16cb2c8e163785f64650c43a4b97
SSDEEP

6144:tloZMNrIkd8g+EtXHkv/iD41KaC9rI8j867NokRQg4db8e1mAG+Iwi:voZmL+EP81KaC9rI8j867NokRQgkC+Ip

Score

10^/10

umbral credential_access execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2064-1-0x0000000000D20000-0x0000000000D60000-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
2372	powershell.exe
2532	powershell.exe
2448	powershell.exe
2780	powershell.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
1768	wmic.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2372	powershell.exe
2780	powershell.exe
2532	powershell.exe
2580	powershell.exe
2448	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2064	uhm, uhh.exe
Token: SeDebugPrivilege	2372	powershell.exe
Token: SeDebugPrivilege	2780	powershell.exe
Token: SeDebugPrivilege	2532	powershell.exe
Token: SeDebugPrivilege	2580	powershell.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
Token: 35	1916	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
Token: 35	1916	wmic.exe
Token: SeIncreaseQuotaPrivilege	1672	wmic.exe
Token: SeSecurityPrivilege	1672	wmic.exe
Token: SeTakeOwnershipPrivilege	1672	wmic.exe
Token: SeLoadDriverPrivilege	1672	wmic.exe
Token: SeSystemProfilePrivilege	1672	wmic.exe
Token: SeSystemtimePrivilege	1672	wmic.exe
Token: SeProfSingleProcessPrivilege	1672	wmic.exe
Token: SeIncBasePriorityPrivilege	1672	wmic.exe
Token: SeCreatePagefilePrivilege	1672	wmic.exe
Token: SeBackupPrivilege	1672	wmic.exe
Token: SeRestorePrivilege	1672	wmic.exe
Token: SeShutdownPrivilege	1672	wmic.exe
Token: SeDebugPrivilege	1672	wmic.exe
Token: SeSystemEnvironmentPrivilege	1672	wmic.exe
Token: SeRemoteShutdownPrivilege	1672	wmic.exe
Token: SeUndockPrivilege	1672	wmic.exe
Token: SeManageVolumePrivilege	1672	wmic.exe
Token: 33	1672	wmic.exe
Token: 34	1672	wmic.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2064 wrote to memory of 2372	2064	uhm, uhh.exe	31
PID 2064 wrote to memory of 2372	2064	uhm, uhh.exe	31
PID 2064 wrote to memory of 2372	2064	uhm, uhh.exe	31
PID 2064 wrote to memory of 2780	2064	uhm, uhh.exe	33
PID 2064 wrote to memory of 2780	2064	uhm, uhh.exe	33
PID 2064 wrote to memory of 2780	2064	uhm, uhh.exe	33
PID 2064 wrote to memory of 2532	2064	uhm, uhh.exe	35
PID 2064 wrote to memory of 2532	2064	uhm, uhh.exe	35
PID 2064 wrote to memory of 2532	2064	uhm, uhh.exe	35
PID 2064 wrote to memory of 2580	2064	uhm, uhh.exe	37
PID 2064 wrote to memory of 2580	2064	uhm, uhh.exe	37
PID 2064 wrote to memory of 2580	2064	uhm, uhh.exe	37
PID 2064 wrote to memory of 1916	2064	uhm, uhh.exe	39
PID 2064 wrote to memory of 1916	2064	uhm, uhh.exe	39
PID 2064 wrote to memory of 1916	2064	uhm, uhh.exe	39
PID 2064 wrote to memory of 1672	2064	uhm, uhh.exe	42
PID 2064 wrote to memory of 1672	2064	uhm, uhh.exe	42
PID 2064 wrote to memory of 1672	2064	uhm, uhh.exe	42
PID 2064 wrote to memory of 2272	2064	uhm, uhh.exe	44
PID 2064 wrote to memory of 2272	2064	uhm, uhh.exe	44
PID 2064 wrote to memory of 2272	2064	uhm, uhh.exe	44
PID 2064 wrote to memory of 2448	2064	uhm, uhh.exe	46
PID 2064 wrote to memory of 2448	2064	uhm, uhh.exe	46
PID 2064 wrote to memory of 2448	2064	uhm, uhh.exe	46
PID 2064 wrote to memory of 1768	2064	uhm, uhh.exe	48
PID 2064 wrote to memory of 1768	2064	uhm, uhh.exe	48
PID 2064 wrote to memory of 1768	2064	uhm, uhh.exe	48

C:\Users\Admin\AppData\Local\Temp\uhm, uhh.exe
"C:\Users\Admin\AppData\Local\Temp\uhm, uhh.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2064
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\uhm, uhh.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2372
- 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:2780
- 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:2532
- 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:2580
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1916
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1672
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2272
- 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:2448
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1768

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

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

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

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
36d9f7ed047a23baa2dc8ca07c7cb27a

SHA1
658cbf9e02fcd2a31b50e9d3ed941b3211b962c0

SHA256
fc1158af6f571afbd1d1bc4cb8127bd75cd8990da6497add5610c262decf2045

SHA512
78ec988ed15072c3b2f55ec10ad461cd636597ae08aa0f52faad604e6ea110512c6077d0f13f447f8f22b10c7cebddd05b25a368c8b54f2c3100c55959eecb34

Download Submit
memory/2064-0-0x000007FEF5F33000-0x000007FEF5F34000-memory.dmp

Filesize
4KB

Download
memory/2064-1-0x0000000000D20000-0x0000000000D60000-memory.dmp

Filesize
256KB

Download
memory/2064-2-0x000007FEF5F30000-0x000007FEF691C000-memory.dmp

Filesize
9.9MB

Download
memory/2064-51-0x000007FEF5F30000-0x000007FEF691C000-memory.dmp

Filesize
9.9MB

Download
memory/2372-12-0x000007FEED770000-0x000007FEEE10D000-memory.dmp

Filesize
9.6MB

Download
memory/2372-11-0x000007FEED770000-0x000007FEEE10D000-memory.dmp

Filesize
9.6MB

Download
memory/2372-9-0x0000000001F00000-0x0000000001F08000-memory.dmp

Filesize
32KB

Download
memory/2372-13-0x000007FEED770000-0x000007FEEE10D000-memory.dmp

Filesize
9.6MB

Download
memory/2372-14-0x000007FEED770000-0x000007FEEE10D000-memory.dmp

Filesize
9.6MB

Download
memory/2372-10-0x000007FEED770000-0x000007FEEE10D000-memory.dmp

Filesize
9.6MB

Download
memory/2372-8-0x000000001B550000-0x000000001B832000-memory.dmp

Filesize
2.9MB

Download
memory/2372-7-0x000007FEEDA2E000-0x000007FEEDA2F000-memory.dmp

Filesize
4KB

Download
memory/2780-20-0x000000001B640000-0x000000001B922000-memory.dmp

Filesize
2.9MB

Download
memory/2780-21-0x0000000002620000-0x0000000002628000-memory.dmp

Filesize
32KB

Download