umbral | 3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b

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
24-01-2025 23:14

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General

Target

3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe
Size

231KB
MD5

ff3be52f8463ba850787640f729bd887
SHA1

b4218156fce36677545852910612eab5630dc291
SHA256

3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b
SHA512

69cdbaea4662a68cd03ff9611dee9593ac7262930252a600bd9da44e8e3b46a41578630e6eb23223157c1f93e5a19c64b3beac0ed4006b0e68f5af753d5ee471
SSDEEP

6144:xloZMffsXtioRkts/cnnK6cMltMMjw2xpaBPyAxVkElb8e1mhzLHi2:DoZdtlRk83MltMMjw2xpaBPyAxVkAMW2

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/1912-1-0x00000000001D0000-0x0000000000210000-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

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

execution

PowerShell

T1059.001

pid	Process
1948	powershell.exe
2724	powershell.exe
2564	powershell.exe
2220	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.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

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
1764	wmic.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe
1948	powershell.exe
2724	powershell.exe
2564	powershell.exe
2816	powershell.exe
2220	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe
Token: SeIncreaseQuotaPrivilege	1792	wmic.exe
Token: SeSecurityPrivilege	1792	wmic.exe
Token: SeTakeOwnershipPrivilege	1792	wmic.exe
Token: SeLoadDriverPrivilege	1792	wmic.exe
Token: SeSystemProfilePrivilege	1792	wmic.exe
Token: SeSystemtimePrivilege	1792	wmic.exe
Token: SeProfSingleProcessPrivilege	1792	wmic.exe
Token: SeIncBasePriorityPrivilege	1792	wmic.exe
Token: SeCreatePagefilePrivilege	1792	wmic.exe
Token: SeBackupPrivilege	1792	wmic.exe
Token: SeRestorePrivilege	1792	wmic.exe
Token: SeShutdownPrivilege	1792	wmic.exe
Token: SeDebugPrivilege	1792	wmic.exe
Token: SeSystemEnvironmentPrivilege	1792	wmic.exe
Token: SeRemoteShutdownPrivilege	1792	wmic.exe
Token: SeUndockPrivilege	1792	wmic.exe
Token: SeManageVolumePrivilege	1792	wmic.exe
Token: 33	1792	wmic.exe
Token: 34	1792	wmic.exe
Token: 35	1792	wmic.exe
Token: SeIncreaseQuotaPrivilege	1792	wmic.exe
Token: SeSecurityPrivilege	1792	wmic.exe
Token: SeTakeOwnershipPrivilege	1792	wmic.exe
Token: SeLoadDriverPrivilege	1792	wmic.exe
Token: SeSystemProfilePrivilege	1792	wmic.exe
Token: SeSystemtimePrivilege	1792	wmic.exe
Token: SeProfSingleProcessPrivilege	1792	wmic.exe
Token: SeIncBasePriorityPrivilege	1792	wmic.exe
Token: SeCreatePagefilePrivilege	1792	wmic.exe
Token: SeBackupPrivilege	1792	wmic.exe
Token: SeRestorePrivilege	1792	wmic.exe
Token: SeShutdownPrivilege	1792	wmic.exe
Token: SeDebugPrivilege	1792	wmic.exe
Token: SeSystemEnvironmentPrivilege	1792	wmic.exe
Token: SeRemoteShutdownPrivilege	1792	wmic.exe
Token: SeUndockPrivilege	1792	wmic.exe
Token: SeManageVolumePrivilege	1792	wmic.exe
Token: 33	1792	wmic.exe
Token: 34	1792	wmic.exe
Token: 35	1792	wmic.exe
Token: SeDebugPrivilege	1948	powershell.exe
Token: SeDebugPrivilege	2724	powershell.exe
Token: SeDebugPrivilege	2564	powershell.exe
Token: SeDebugPrivilege	2816	powershell.exe
Token: SeIncreaseQuotaPrivilege	2528	wmic.exe
Token: SeSecurityPrivilege	2528	wmic.exe
Token: SeTakeOwnershipPrivilege	2528	wmic.exe
Token: SeLoadDriverPrivilege	2528	wmic.exe
Token: SeSystemProfilePrivilege	2528	wmic.exe
Token: SeSystemtimePrivilege	2528	wmic.exe
Token: SeProfSingleProcessPrivilege	2528	wmic.exe
Token: SeIncBasePriorityPrivilege	2528	wmic.exe
Token: SeCreatePagefilePrivilege	2528	wmic.exe
Token: SeBackupPrivilege	2528	wmic.exe
Token: SeRestorePrivilege	2528	wmic.exe
Token: SeShutdownPrivilege	2528	wmic.exe
Token: SeDebugPrivilege	2528	wmic.exe
Token: SeSystemEnvironmentPrivilege	2528	wmic.exe
Token: SeRemoteShutdownPrivilege	2528	wmic.exe
Token: SeUndockPrivilege	2528	wmic.exe
Token: SeManageVolumePrivilege	2528	wmic.exe
Token: 33	2528	wmic.exe
Token: 34	2528	wmic.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1912 wrote to memory of 1792	1912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	28
PID 1912 wrote to memory of 1792	1912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	28
PID 1912 wrote to memory of 1792	1912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	28
PID 1912 wrote to memory of 1948	1912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	31
PID 1912 wrote to memory of 1948	1912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	31
PID 1912 wrote to memory of 1948	1912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	31
PID 1912 wrote to memory of 2724	1912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	33
PID 1912 wrote to memory of 2724	1912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	33
PID 1912 wrote to memory of 2724	1912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	33
PID 1912 wrote to memory of 2564	1912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	35
PID 1912 wrote to memory of 2564	1912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	35
PID 1912 wrote to memory of 2564	1912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	35
PID 1912 wrote to memory of 2816	1912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	37
PID 1912 wrote to memory of 2816	1912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	37
PID 1912 wrote to memory of 2816	1912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	37
PID 1912 wrote to memory of 2528	1912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	39
PID 1912 wrote to memory of 2528	1912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	39
PID 1912 wrote to memory of 2528	1912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	39
PID 1912 wrote to memory of 1616	1912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	41
PID 1912 wrote to memory of 1616	1912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	41
PID 1912 wrote to memory of 1616	1912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	41
PID 1912 wrote to memory of 2768	1912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	43
PID 1912 wrote to memory of 2768	1912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	43
PID 1912 wrote to memory of 2768	1912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	43
PID 1912 wrote to memory of 2220	1912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	45
PID 1912 wrote to memory of 2220	1912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	45
PID 1912 wrote to memory of 2220	1912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	45
PID 1912 wrote to memory of 1764	1912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	47
PID 1912 wrote to memory of 1764	1912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	47
PID 1912 wrote to memory of 1764	1912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	47

C:\Users\Admin\AppData\Local\Temp\3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe
"C:\Users\Admin\AppData\Local\Temp\3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1912
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1792
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1948
- 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:2724
- 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:2564
- 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:2816
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2528
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1616
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2768
- 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:2220
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1764

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

Exfiltration

Impact

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Downloads

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

Filesize
7KB

MD5
abc0d8916d796b3ff489dcba421f0f33

SHA1
ffd4e9a546f205b64971dca1968657bc832b57e2

SHA256
1f9cceb3bc6126f4727a02b37b384e643458304716090912d9c2d1c790863e20

SHA512
73b6b991a023763cbd34373d844f58021c85c824aa0dad1bef693127e2e63cf92be266d62d65e17f895eb6807572fc5c812d430d2c78f8d15cf80c2aeb86c578

Download Submit
memory/1912-0-0x000007FEF5973000-0x000007FEF5974000-memory.dmp

Filesize
4KB

Download
memory/1912-1-0x00000000001D0000-0x0000000000210000-memory.dmp

Filesize
256KB

Download
memory/1912-2-0x000007FEF5970000-0x000007FEF635C000-memory.dmp

Filesize
9.9MB

Download
memory/1912-43-0x000007FEF5970000-0x000007FEF635C000-memory.dmp

Filesize
9.9MB

Download
memory/1948-7-0x000000001B6A0000-0x000000001B982000-memory.dmp

Filesize
2.9MB

Download
memory/1948-8-0x0000000002390000-0x0000000002398000-memory.dmp

Filesize
32KB

Download
memory/2220-39-0x0000000001D10000-0x0000000001D18000-memory.dmp

Filesize
32KB

Download
memory/2724-14-0x000000001B6D0000-0x000000001B9B2000-memory.dmp

Filesize
2.9MB

Download
memory/2724-15-0x0000000001EF0000-0x0000000001EF8000-memory.dmp

Filesize
32KB

Download