umbral | dc2a8b1f1aec321b087018c6177a9a6478d3ee10b04ef0ed525e3b33206ea3fc

Analysis

max time kernel
34s
max time network
36s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
01-01-2025 05:04

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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/3752-1-0x000001EC11800000-0x000001EC11840000-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
2340	powershell.exe
2268	powershell.exe
5112	powershell.exe
3964	powershell.exe

Drops file in Drivers directory 1 IoCs

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

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
20	discord.com
21	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
3668	cmd.exe
1988	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2512	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1988	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
3752	bvQL7.scr
2340	powershell.exe
2340	powershell.exe
2268	powershell.exe
2268	powershell.exe
5112	powershell.exe
5112	powershell.exe
4824	powershell.exe
4824	powershell.exe
3964	powershell.exe
3964	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3752	bvQL7.scr
Token: SeIncreaseQuotaPrivilege	2348	wmic.exe
Token: SeSecurityPrivilege	2348	wmic.exe
Token: SeTakeOwnershipPrivilege	2348	wmic.exe
Token: SeLoadDriverPrivilege	2348	wmic.exe
Token: SeSystemProfilePrivilege	2348	wmic.exe
Token: SeSystemtimePrivilege	2348	wmic.exe
Token: SeProfSingleProcessPrivilege	2348	wmic.exe
Token: SeIncBasePriorityPrivilege	2348	wmic.exe
Token: SeCreatePagefilePrivilege	2348	wmic.exe
Token: SeBackupPrivilege	2348	wmic.exe
Token: SeRestorePrivilege	2348	wmic.exe
Token: SeShutdownPrivilege	2348	wmic.exe
Token: SeDebugPrivilege	2348	wmic.exe
Token: SeSystemEnvironmentPrivilege	2348	wmic.exe
Token: SeRemoteShutdownPrivilege	2348	wmic.exe
Token: SeUndockPrivilege	2348	wmic.exe
Token: SeManageVolumePrivilege	2348	wmic.exe
Token: 33	2348	wmic.exe
Token: 34	2348	wmic.exe
Token: 35	2348	wmic.exe
Token: 36	2348	wmic.exe
Token: SeIncreaseQuotaPrivilege	2348	wmic.exe
Token: SeSecurityPrivilege	2348	wmic.exe
Token: SeTakeOwnershipPrivilege	2348	wmic.exe
Token: SeLoadDriverPrivilege	2348	wmic.exe
Token: SeSystemProfilePrivilege	2348	wmic.exe
Token: SeSystemtimePrivilege	2348	wmic.exe
Token: SeProfSingleProcessPrivilege	2348	wmic.exe
Token: SeIncBasePriorityPrivilege	2348	wmic.exe
Token: SeCreatePagefilePrivilege	2348	wmic.exe
Token: SeBackupPrivilege	2348	wmic.exe
Token: SeRestorePrivilege	2348	wmic.exe
Token: SeShutdownPrivilege	2348	wmic.exe
Token: SeDebugPrivilege	2348	wmic.exe
Token: SeSystemEnvironmentPrivilege	2348	wmic.exe
Token: SeRemoteShutdownPrivilege	2348	wmic.exe
Token: SeUndockPrivilege	2348	wmic.exe
Token: SeManageVolumePrivilege	2348	wmic.exe
Token: 33	2348	wmic.exe
Token: 34	2348	wmic.exe
Token: 35	2348	wmic.exe
Token: 36	2348	wmic.exe
Token: SeDebugPrivilege	2340	powershell.exe
Token: SeDebugPrivilege	2268	powershell.exe
Token: SeDebugPrivilege	5112	powershell.exe
Token: SeDebugPrivilege	4824	powershell.exe
Token: SeIncreaseQuotaPrivilege	3192	wmic.exe
Token: SeSecurityPrivilege	3192	wmic.exe
Token: SeTakeOwnershipPrivilege	3192	wmic.exe
Token: SeLoadDriverPrivilege	3192	wmic.exe
Token: SeSystemProfilePrivilege	3192	wmic.exe
Token: SeSystemtimePrivilege	3192	wmic.exe
Token: SeProfSingleProcessPrivilege	3192	wmic.exe
Token: SeIncBasePriorityPrivilege	3192	wmic.exe
Token: SeCreatePagefilePrivilege	3192	wmic.exe
Token: SeBackupPrivilege	3192	wmic.exe
Token: SeRestorePrivilege	3192	wmic.exe
Token: SeShutdownPrivilege	3192	wmic.exe
Token: SeDebugPrivilege	3192	wmic.exe
Token: SeSystemEnvironmentPrivilege	3192	wmic.exe
Token: SeRemoteShutdownPrivilege	3192	wmic.exe
Token: SeUndockPrivilege	3192	wmic.exe
Token: SeManageVolumePrivilege	3192	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3752 wrote to memory of 2348	3752	bvQL7.scr	83
PID 3752 wrote to memory of 2348	3752	bvQL7.scr	83
PID 3752 wrote to memory of 2004	3752	bvQL7.scr	86
PID 3752 wrote to memory of 2004	3752	bvQL7.scr	86
PID 3752 wrote to memory of 2340	3752	bvQL7.scr	88
PID 3752 wrote to memory of 2340	3752	bvQL7.scr	88
PID 3752 wrote to memory of 2268	3752	bvQL7.scr	90
PID 3752 wrote to memory of 2268	3752	bvQL7.scr	90
PID 3752 wrote to memory of 5112	3752	bvQL7.scr	92
PID 3752 wrote to memory of 5112	3752	bvQL7.scr	92
PID 3752 wrote to memory of 4824	3752	bvQL7.scr	94
PID 3752 wrote to memory of 4824	3752	bvQL7.scr	94
PID 3752 wrote to memory of 3192	3752	bvQL7.scr	96
PID 3752 wrote to memory of 3192	3752	bvQL7.scr	96
PID 3752 wrote to memory of 4488	3752	bvQL7.scr	98
PID 3752 wrote to memory of 4488	3752	bvQL7.scr	98
PID 3752 wrote to memory of 3908	3752	bvQL7.scr	101
PID 3752 wrote to memory of 3908	3752	bvQL7.scr	101
PID 3752 wrote to memory of 3964	3752	bvQL7.scr	103
PID 3752 wrote to memory of 3964	3752	bvQL7.scr	103
PID 3752 wrote to memory of 2512	3752	bvQL7.scr	105
PID 3752 wrote to memory of 2512	3752	bvQL7.scr	105
PID 3752 wrote to memory of 3668	3752	bvQL7.scr	118
PID 3752 wrote to memory of 3668	3752	bvQL7.scr	118
PID 3668 wrote to memory of 1988	3668	cmd.exe	120
PID 3668 wrote to memory of 1988	3668	cmd.exe	120

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2004	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:3752
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2348
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\bvQL7.scr"
  2⤵
  - Views/modifies file attributes
  PID:2004
- 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:2340
- 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:2268
- 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:5112
- 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:4824
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3192
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:4488
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3908
- 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:3964
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2512
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\bvQL7.scr" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3668
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1988

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\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
948B

MD5
8bbd6908e148d61010a3130cb6aae4a0

SHA1
e74bcc1b0f762fcd7469d0621b9c7fe50b0c365d

SHA256
79c8ed7085737723dbc7c40b32d01ea400171787259b7458561cd5db60401023

SHA512
38057edb5f2ce86329f558bf34224c6110443635756b1b26da99f89b13e3f971bf602939f40d3fce8459cfdab4ad4fa4928ecb933ff045173535fcc46fe4855f

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
276798eeb29a49dc6e199768bc9c2e71

SHA1
5fdc8ccb897ac2df7476fbb07517aca5b7a6205b

SHA256
cd0a1056e8f1b6cb5cb328532239d802f4e2aa8f8fcdc0fcb487684bd68e0dcc

SHA512
0d34fce64bbefc57d64fa6e03ca886952263d5f24df9c1c4cce6a1e8f5a47a9a21e9820f8d38caa7f7b43a52336ce00b738ea18419aaa7c788b72e04ce19e4f2

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
162b1944dc3053c807a47caeb45090b0

SHA1
9c53e6b7ceb470922db66e8ae5ba4454db1e3aa6

SHA256
eeb10f763fbeb4e7005bd85be1a3bed629cdee7bf49eb2db9f97e1ff946faa5a

SHA512
e1ea68e46056e5218fead99adcb77e5b72faad86b6619265a547cbd1d8e26356f1cd3be0ee142d716214af5bd050893ef4bd11573ed2e237882b7804da290e58

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jvouthk2.ytp.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2340-14-0x00007FFCC2290000-0x00007FFCC2D51000-memory.dmp

Filesize
10.8MB

Download
memory/2340-12-0x00007FFCC2290000-0x00007FFCC2D51000-memory.dmp

Filesize
10.8MB

Download
memory/2340-18-0x00007FFCC2290000-0x00007FFCC2D51000-memory.dmp

Filesize
10.8MB

Download
memory/2340-15-0x000001CC42120000-0x000001CC42142000-memory.dmp

Filesize
136KB

Download
memory/2340-13-0x00007FFCC2290000-0x00007FFCC2D51000-memory.dmp

Filesize
10.8MB

Download
memory/3752-2-0x00007FFCC2290000-0x00007FFCC2D51000-memory.dmp

Filesize
10.8MB

Download
memory/3752-34-0x000001EC135E0000-0x000001EC13630000-memory.dmp

Filesize
320KB

Download
memory/3752-35-0x000001EC13590000-0x000001EC135AE000-memory.dmp

Filesize
120KB

Download
memory/3752-33-0x000001EC2BE30000-0x000001EC2BEA6000-memory.dmp

Filesize
472KB

Download
memory/3752-0-0x00007FFCC2293000-0x00007FFCC2295000-memory.dmp

Filesize
8KB

Download
memory/3752-72-0x000001EC135D0000-0x000001EC135DA000-memory.dmp

Filesize
40KB

Download
memory/3752-73-0x000001EC2BEB0000-0x000001EC2BEC2000-memory.dmp

Filesize
72KB

Download
memory/3752-1-0x000001EC11800000-0x000001EC11840000-memory.dmp

Filesize
256KB

Download
memory/3752-89-0x00007FFCC2293000-0x00007FFCC2295000-memory.dmp

Filesize
8KB

Download
memory/3752-90-0x00007FFCC2290000-0x00007FFCC2D51000-memory.dmp

Filesize
10.8MB

Download
memory/3752-91-0x000001EC2BD20000-0x000001EC2BE22000-memory.dmp

Filesize
1.0MB

Download
memory/3752-97-0x000001EC2BD20000-0x000001EC2BE22000-memory.dmp

Filesize
1.0MB

Download
memory/3752-98-0x00007FFCC2290000-0x00007FFCC2D51000-memory.dmp

Filesize
10.8MB

Download