umbral | 733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
25-01-2025 12:11

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General

Target

733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe
Size

231KB
MD5

0adae0c64017d858ba11f98f8276a970
SHA1

4363eac789ffcf9d966981069e2709a249509181
SHA256

733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef
SHA512

e31f1d41ad682b6e566e628ec02fbcc690f79026442e6171f3ae745058d80c72cdc36b6822f84d9c950d8aa24bdc4820257b30a43bb7138888df65bc423cdea8
SSDEEP

6144:xloZMffsXtioRkts/cnnK6cMltMMjw2xpaBPyAxVkElb8e1mhzLHiy:DoZdtlRk83MltMMjw2xpaBPyAxVkAMWy

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2424-1-0x00000000008C0000-0x0000000000900000-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
2784	powershell.exe
2504	powershell.exe
1800	powershell.exe
2756	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.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
2296	wmic.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2424	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe
2756	powershell.exe
2784	powershell.exe
2504	powershell.exe
2956	powershell.exe
1800	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2424	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe
Token: SeIncreaseQuotaPrivilege	2992	wmic.exe
Token: SeSecurityPrivilege	2992	wmic.exe
Token: SeTakeOwnershipPrivilege	2992	wmic.exe
Token: SeLoadDriverPrivilege	2992	wmic.exe
Token: SeSystemProfilePrivilege	2992	wmic.exe
Token: SeSystemtimePrivilege	2992	wmic.exe
Token: SeProfSingleProcessPrivilege	2992	wmic.exe
Token: SeIncBasePriorityPrivilege	2992	wmic.exe
Token: SeCreatePagefilePrivilege	2992	wmic.exe
Token: SeBackupPrivilege	2992	wmic.exe
Token: SeRestorePrivilege	2992	wmic.exe
Token: SeShutdownPrivilege	2992	wmic.exe
Token: SeDebugPrivilege	2992	wmic.exe
Token: SeSystemEnvironmentPrivilege	2992	wmic.exe
Token: SeRemoteShutdownPrivilege	2992	wmic.exe
Token: SeUndockPrivilege	2992	wmic.exe
Token: SeManageVolumePrivilege	2992	wmic.exe
Token: 33	2992	wmic.exe
Token: 34	2992	wmic.exe
Token: 35	2992	wmic.exe
Token: SeIncreaseQuotaPrivilege	2992	wmic.exe
Token: SeSecurityPrivilege	2992	wmic.exe
Token: SeTakeOwnershipPrivilege	2992	wmic.exe
Token: SeLoadDriverPrivilege	2992	wmic.exe
Token: SeSystemProfilePrivilege	2992	wmic.exe
Token: SeSystemtimePrivilege	2992	wmic.exe
Token: SeProfSingleProcessPrivilege	2992	wmic.exe
Token: SeIncBasePriorityPrivilege	2992	wmic.exe
Token: SeCreatePagefilePrivilege	2992	wmic.exe
Token: SeBackupPrivilege	2992	wmic.exe
Token: SeRestorePrivilege	2992	wmic.exe
Token: SeShutdownPrivilege	2992	wmic.exe
Token: SeDebugPrivilege	2992	wmic.exe
Token: SeSystemEnvironmentPrivilege	2992	wmic.exe
Token: SeRemoteShutdownPrivilege	2992	wmic.exe
Token: SeUndockPrivilege	2992	wmic.exe
Token: SeManageVolumePrivilege	2992	wmic.exe
Token: 33	2992	wmic.exe
Token: 34	2992	wmic.exe
Token: 35	2992	wmic.exe
Token: SeDebugPrivilege	2756	powershell.exe
Token: SeDebugPrivilege	2784	powershell.exe
Token: SeDebugPrivilege	2504	powershell.exe
Token: SeDebugPrivilege	2956	powershell.exe
Token: SeIncreaseQuotaPrivilege	572	wmic.exe
Token: SeSecurityPrivilege	572	wmic.exe
Token: SeTakeOwnershipPrivilege	572	wmic.exe
Token: SeLoadDriverPrivilege	572	wmic.exe
Token: SeSystemProfilePrivilege	572	wmic.exe
Token: SeSystemtimePrivilege	572	wmic.exe
Token: SeProfSingleProcessPrivilege	572	wmic.exe
Token: SeIncBasePriorityPrivilege	572	wmic.exe
Token: SeCreatePagefilePrivilege	572	wmic.exe
Token: SeBackupPrivilege	572	wmic.exe
Token: SeRestorePrivilege	572	wmic.exe
Token: SeShutdownPrivilege	572	wmic.exe
Token: SeDebugPrivilege	572	wmic.exe
Token: SeSystemEnvironmentPrivilege	572	wmic.exe
Token: SeRemoteShutdownPrivilege	572	wmic.exe
Token: SeUndockPrivilege	572	wmic.exe
Token: SeManageVolumePrivilege	572	wmic.exe
Token: 33	572	wmic.exe
Token: 34	572	wmic.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2424 wrote to memory of 2992	2424	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	28
PID 2424 wrote to memory of 2992	2424	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	28
PID 2424 wrote to memory of 2992	2424	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	28
PID 2424 wrote to memory of 2756	2424	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	31
PID 2424 wrote to memory of 2756	2424	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	31
PID 2424 wrote to memory of 2756	2424	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	31
PID 2424 wrote to memory of 2784	2424	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	33
PID 2424 wrote to memory of 2784	2424	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	33
PID 2424 wrote to memory of 2784	2424	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	33
PID 2424 wrote to memory of 2504	2424	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	35
PID 2424 wrote to memory of 2504	2424	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	35
PID 2424 wrote to memory of 2504	2424	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	35
PID 2424 wrote to memory of 2956	2424	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	37
PID 2424 wrote to memory of 2956	2424	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	37
PID 2424 wrote to memory of 2956	2424	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	37
PID 2424 wrote to memory of 572	2424	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	39
PID 2424 wrote to memory of 572	2424	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	39
PID 2424 wrote to memory of 572	2424	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	39
PID 2424 wrote to memory of 2456	2424	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	41
PID 2424 wrote to memory of 2456	2424	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	41
PID 2424 wrote to memory of 2456	2424	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	41
PID 2424 wrote to memory of 2312	2424	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	43
PID 2424 wrote to memory of 2312	2424	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	43
PID 2424 wrote to memory of 2312	2424	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	43
PID 2424 wrote to memory of 1800	2424	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	45
PID 2424 wrote to memory of 1800	2424	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	45
PID 2424 wrote to memory of 1800	2424	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	45
PID 2424 wrote to memory of 2296	2424	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	47
PID 2424 wrote to memory of 2296	2424	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	47
PID 2424 wrote to memory of 2296	2424	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	47

C:\Users\Admin\AppData\Local\Temp\733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe
"C:\Users\Admin\AppData\Local\Temp\733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2424
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2992
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2756
- 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:2784
- 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:2504
- 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:2956
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:572
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2456
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2312
- 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:1800
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2296

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
4f0a3ab385a875ac3ade1f69a9668aca

SHA1
4852f8ed75cf3d04b082dec49c76748f2be5a695

SHA256
4d708d7d15b8d775154418ffafaec1a8b57df3af8f38cdfe3acce56f24b25f5a

SHA512
64c596220921afd1f3d4f42b00c671fcb2522d3f780fbf28b0b0930f34d59fd91de11151d2052cb6f0028a4e37f3f5095663e99f46fc85a294e956ab08b27036

Download Submit
memory/1800-42-0x0000000001FD0000-0x0000000001FD8000-memory.dmp

Filesize
32KB

Download
memory/2424-0-0x000007FEF5DA3000-0x000007FEF5DA4000-memory.dmp

Filesize
4KB

Download
memory/2424-1-0x00000000008C0000-0x0000000000900000-memory.dmp

Filesize
256KB

Download
memory/2424-2-0x000007FEF5DA0000-0x000007FEF678C000-memory.dmp

Filesize
9.9MB

Download
memory/2424-46-0x000007FEF5DA0000-0x000007FEF678C000-memory.dmp

Filesize
9.9MB

Download
memory/2756-7-0x000000001B650000-0x000000001B932000-memory.dmp

Filesize
2.9MB

Download
memory/2756-8-0x00000000027E0000-0x00000000027E8000-memory.dmp

Filesize
32KB

Download
memory/2784-14-0x000000001B600000-0x000000001B8E2000-memory.dmp

Filesize
2.9MB

Download
memory/2784-15-0x00000000005F0000-0x00000000005F8000-memory.dmp

Filesize
32KB

Download