umbral | dc2a8b1f1aec321b087018c6177a9a6478d3ee10b04ef0ed525e3b33206ea3fc

Analysis

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

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
01-01-2025 05:14

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General

Target

bvQL7.scr
Size

231KB
MD5

8fcef0c1c33c1f00b585f79e484a63fa
SHA1

57eaedd0de6fc7b965a6b132cf23380076e63336
SHA256

dc2a8b1f1aec321b087018c6177a9a6478d3ee10b04ef0ed525e3b33206ea3fc
SHA512

ab422374c0f26ce2834b3738d7c4611f214ebb7090f98b7aa92bc1a7a273ead93186013268b5c15878f0df9c075c870ff9648001efc3f9ec03951d83df820fb0
SSDEEP

6144:RloZM+rIkd8g+EtXHkv/iD42i6kgGhZqLfiQBFUAjb8e1mAi:joZtL+EP82i6kgGhZqLfiQBFU+e

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2072-1-0x0000000000AF0000-0x0000000000B30000-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
2716	powershell.exe
2628	powershell.exe
1996	powershell.exe
2804	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	bvQL7.scr

Deletes itself 1 IoCs

pid	Process
2376	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
9	discord.com
10	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
2376	cmd.exe
2224	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2940	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2224	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2072	bvQL7.scr
2804	powershell.exe
2716	powershell.exe
2628	powershell.exe
1472	powershell.exe
1996	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2072	bvQL7.scr
Token: SeIncreaseQuotaPrivilege	2556	wmic.exe
Token: SeSecurityPrivilege	2556	wmic.exe
Token: SeTakeOwnershipPrivilege	2556	wmic.exe
Token: SeLoadDriverPrivilege	2556	wmic.exe
Token: SeSystemProfilePrivilege	2556	wmic.exe
Token: SeSystemtimePrivilege	2556	wmic.exe
Token: SeProfSingleProcessPrivilege	2556	wmic.exe
Token: SeIncBasePriorityPrivilege	2556	wmic.exe
Token: SeCreatePagefilePrivilege	2556	wmic.exe
Token: SeBackupPrivilege	2556	wmic.exe
Token: SeRestorePrivilege	2556	wmic.exe
Token: SeShutdownPrivilege	2556	wmic.exe
Token: SeDebugPrivilege	2556	wmic.exe
Token: SeSystemEnvironmentPrivilege	2556	wmic.exe
Token: SeRemoteShutdownPrivilege	2556	wmic.exe
Token: SeUndockPrivilege	2556	wmic.exe
Token: SeManageVolumePrivilege	2556	wmic.exe
Token: 33	2556	wmic.exe
Token: 34	2556	wmic.exe
Token: 35	2556	wmic.exe
Token: SeIncreaseQuotaPrivilege	2556	wmic.exe
Token: SeSecurityPrivilege	2556	wmic.exe
Token: SeTakeOwnershipPrivilege	2556	wmic.exe
Token: SeLoadDriverPrivilege	2556	wmic.exe
Token: SeSystemProfilePrivilege	2556	wmic.exe
Token: SeSystemtimePrivilege	2556	wmic.exe
Token: SeProfSingleProcessPrivilege	2556	wmic.exe
Token: SeIncBasePriorityPrivilege	2556	wmic.exe
Token: SeCreatePagefilePrivilege	2556	wmic.exe
Token: SeBackupPrivilege	2556	wmic.exe
Token: SeRestorePrivilege	2556	wmic.exe
Token: SeShutdownPrivilege	2556	wmic.exe
Token: SeDebugPrivilege	2556	wmic.exe
Token: SeSystemEnvironmentPrivilege	2556	wmic.exe
Token: SeRemoteShutdownPrivilege	2556	wmic.exe
Token: SeUndockPrivilege	2556	wmic.exe
Token: SeManageVolumePrivilege	2556	wmic.exe
Token: 33	2556	wmic.exe
Token: 34	2556	wmic.exe
Token: 35	2556	wmic.exe
Token: SeDebugPrivilege	2804	powershell.exe
Token: SeDebugPrivilege	2716	powershell.exe
Token: SeDebugPrivilege	2628	powershell.exe
Token: SeDebugPrivilege	1472	powershell.exe
Token: SeIncreaseQuotaPrivilege	1576	wmic.exe
Token: SeSecurityPrivilege	1576	wmic.exe
Token: SeTakeOwnershipPrivilege	1576	wmic.exe
Token: SeLoadDriverPrivilege	1576	wmic.exe
Token: SeSystemProfilePrivilege	1576	wmic.exe
Token: SeSystemtimePrivilege	1576	wmic.exe
Token: SeProfSingleProcessPrivilege	1576	wmic.exe
Token: SeIncBasePriorityPrivilege	1576	wmic.exe
Token: SeCreatePagefilePrivilege	1576	wmic.exe
Token: SeBackupPrivilege	1576	wmic.exe
Token: SeRestorePrivilege	1576	wmic.exe
Token: SeShutdownPrivilege	1576	wmic.exe
Token: SeDebugPrivilege	1576	wmic.exe
Token: SeSystemEnvironmentPrivilege	1576	wmic.exe
Token: SeRemoteShutdownPrivilege	1576	wmic.exe
Token: SeUndockPrivilege	1576	wmic.exe
Token: SeManageVolumePrivilege	1576	wmic.exe
Token: 33	1576	wmic.exe
Token: 34	1576	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2072 wrote to memory of 2556	2072	bvQL7.scr	30
PID 2072 wrote to memory of 2556	2072	bvQL7.scr	30
PID 2072 wrote to memory of 2556	2072	bvQL7.scr	30
PID 2072 wrote to memory of 2336	2072	bvQL7.scr	33
PID 2072 wrote to memory of 2336	2072	bvQL7.scr	33
PID 2072 wrote to memory of 2336	2072	bvQL7.scr	33
PID 2072 wrote to memory of 2804	2072	bvQL7.scr	35
PID 2072 wrote to memory of 2804	2072	bvQL7.scr	35
PID 2072 wrote to memory of 2804	2072	bvQL7.scr	35
PID 2072 wrote to memory of 2716	2072	bvQL7.scr	37
PID 2072 wrote to memory of 2716	2072	bvQL7.scr	37
PID 2072 wrote to memory of 2716	2072	bvQL7.scr	37
PID 2072 wrote to memory of 2628	2072	bvQL7.scr	39
PID 2072 wrote to memory of 2628	2072	bvQL7.scr	39
PID 2072 wrote to memory of 2628	2072	bvQL7.scr	39
PID 2072 wrote to memory of 1472	2072	bvQL7.scr	42
PID 2072 wrote to memory of 1472	2072	bvQL7.scr	42
PID 2072 wrote to memory of 1472	2072	bvQL7.scr	42
PID 2072 wrote to memory of 1576	2072	bvQL7.scr	44
PID 2072 wrote to memory of 1576	2072	bvQL7.scr	44
PID 2072 wrote to memory of 1576	2072	bvQL7.scr	44
PID 2072 wrote to memory of 1876	2072	bvQL7.scr	46
PID 2072 wrote to memory of 1876	2072	bvQL7.scr	46
PID 2072 wrote to memory of 1876	2072	bvQL7.scr	46
PID 2072 wrote to memory of 2792	2072	bvQL7.scr	48
PID 2072 wrote to memory of 2792	2072	bvQL7.scr	48
PID 2072 wrote to memory of 2792	2072	bvQL7.scr	48
PID 2072 wrote to memory of 1996	2072	bvQL7.scr	50
PID 2072 wrote to memory of 1996	2072	bvQL7.scr	50
PID 2072 wrote to memory of 1996	2072	bvQL7.scr	50
PID 2072 wrote to memory of 2940	2072	bvQL7.scr	52
PID 2072 wrote to memory of 2940	2072	bvQL7.scr	52
PID 2072 wrote to memory of 2940	2072	bvQL7.scr	52
PID 2072 wrote to memory of 2376	2072	bvQL7.scr	54
PID 2072 wrote to memory of 2376	2072	bvQL7.scr	54
PID 2072 wrote to memory of 2376	2072	bvQL7.scr	54
PID 2376 wrote to memory of 2224	2376	cmd.exe	56
PID 2376 wrote to memory of 2224	2376	cmd.exe	56
PID 2376 wrote to memory of 2224	2376	cmd.exe	56

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2336	attrib.exe

C:\Users\Admin\AppData\Local\Temp\bvQL7.scr
"C:\Users\Admin\AppData\Local\Temp\bvQL7.scr" /S
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2072
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2556
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\bvQL7.scr"
  2⤵
  - Views/modifies file attributes
  PID:2336
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\bvQL7.scr'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2804
- 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:2716
- 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:2628
- 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:1472
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1576
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1876
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2792
- 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:1996
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2940
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\bvQL7.scr" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2376
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2224

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\7VWOLZTW32E0TPZJWJ0Y.temp

Filesize
7KB

MD5
2568dda45c08012753e88f07c329e2ff

SHA1
f2f19d9e320f0e6736e4934e9c249be9e0a366b3

SHA256
5f362008d27c09b2fe58d02231d2e333238a5bb973b9b680892387f2721b22bc

SHA512
8a6acc4fe18fca04ecd3900f758bb4556e84f2a489d27a9102ea2969041f2e6b387aaedbab85d8d998de786536390607db5d2180750b225084a57ab2f374715c

Download Submit
memory/1996-44-0x000000001B680000-0x000000001B962000-memory.dmp

Filesize
2.9MB

Download
memory/1996-45-0x0000000001FF0000-0x0000000001FF8000-memory.dmp

Filesize
32KB

Download
memory/2072-0-0x000007FEF5CD3000-0x000007FEF5CD4000-memory.dmp

Filesize
4KB

Download
memory/2072-1-0x0000000000AF0000-0x0000000000B30000-memory.dmp

Filesize
256KB

Download
memory/2072-2-0x000007FEF5CD0000-0x000007FEF66BC000-memory.dmp

Filesize
9.9MB

Download
memory/2072-49-0x000007FEF5CD0000-0x000007FEF66BC000-memory.dmp

Filesize
9.9MB

Download
memory/2716-14-0x000000001B790000-0x000000001BA72000-memory.dmp

Filesize
2.9MB

Download
memory/2716-15-0x0000000001E50000-0x0000000001E58000-memory.dmp

Filesize
32KB

Download
memory/2804-7-0x000000001B4E0000-0x000000001B7C2000-memory.dmp

Filesize
2.9MB

Download
memory/2804-8-0x0000000002960000-0x0000000002968000-memory.dmp

Filesize
32KB

Download