umbral | 07e766e52bb7e049cf15d5f7a5d7e5600760920a6fdf0817da956572267f6002

Analysis

max time kernel
89s
max time network
87s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07/09/2024, 21:08

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General

Target

880291d677d6775c4d808db72a161db0N.exe
Size

229KB
MD5

880291d677d6775c4d808db72a161db0
SHA1

5455b1a4cc2efeef61a63109a34c0730a759cae4
SHA256

07e766e52bb7e049cf15d5f7a5d7e5600760920a6fdf0817da956572267f6002
SHA512

9bb8a742960e14ebbc50e247cc96ce3cf721e45fe19afe98e1fa8820aad8c9af96291445c778d06c6916763c54b0f5e3e05d7187cceb1a96b8ff9fba9e3c927f
SSDEEP

6144:lloZM9rIkd8g+EtXHkv/iD4ruwiJX8Qf3+nJUg172b8e1mei:noZOL+EP8ruwiJX8Qf3+nJUg1uY

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2960-1-0x0000000000070000-0x00000000000B0000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

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
2360	powershell.exe
1348	powershell.exe
1864	powershell.exe
940	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	880291d677d6775c4d808db72a161db0N.exe

Deletes itself 1 IoCs

pid	Process
2320	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
11	discord.com
12	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
9	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
2320	cmd.exe
2172	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
376	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2172	PING.EXE

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2360	powershell.exe
1348	powershell.exe
1864	powershell.exe
2868	powershell.exe
940	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2960	880291d677d6775c4d808db72a161db0N.exe
Token: SeDebugPrivilege	2360	powershell.exe
Token: SeDebugPrivilege	1348	powershell.exe
Token: SeDebugPrivilege	1864	powershell.exe
Token: SeDebugPrivilege	2868	powershell.exe
Token: SeIncreaseQuotaPrivilege	2272	wmic.exe
Token: SeSecurityPrivilege	2272	wmic.exe
Token: SeTakeOwnershipPrivilege	2272	wmic.exe
Token: SeLoadDriverPrivilege	2272	wmic.exe
Token: SeSystemProfilePrivilege	2272	wmic.exe
Token: SeSystemtimePrivilege	2272	wmic.exe
Token: SeProfSingleProcessPrivilege	2272	wmic.exe
Token: SeIncBasePriorityPrivilege	2272	wmic.exe
Token: SeCreatePagefilePrivilege	2272	wmic.exe
Token: SeBackupPrivilege	2272	wmic.exe
Token: SeRestorePrivilege	2272	wmic.exe
Token: SeShutdownPrivilege	2272	wmic.exe
Token: SeDebugPrivilege	2272	wmic.exe
Token: SeSystemEnvironmentPrivilege	2272	wmic.exe
Token: SeRemoteShutdownPrivilege	2272	wmic.exe
Token: SeUndockPrivilege	2272	wmic.exe
Token: SeManageVolumePrivilege	2272	wmic.exe
Token: 33	2272	wmic.exe
Token: 34	2272	wmic.exe
Token: 35	2272	wmic.exe
Token: SeIncreaseQuotaPrivilege	2272	wmic.exe
Token: SeSecurityPrivilege	2272	wmic.exe
Token: SeTakeOwnershipPrivilege	2272	wmic.exe
Token: SeLoadDriverPrivilege	2272	wmic.exe
Token: SeSystemProfilePrivilege	2272	wmic.exe
Token: SeSystemtimePrivilege	2272	wmic.exe
Token: SeProfSingleProcessPrivilege	2272	wmic.exe
Token: SeIncBasePriorityPrivilege	2272	wmic.exe
Token: SeCreatePagefilePrivilege	2272	wmic.exe
Token: SeBackupPrivilege	2272	wmic.exe
Token: SeRestorePrivilege	2272	wmic.exe
Token: SeShutdownPrivilege	2272	wmic.exe
Token: SeDebugPrivilege	2272	wmic.exe
Token: SeSystemEnvironmentPrivilege	2272	wmic.exe
Token: SeRemoteShutdownPrivilege	2272	wmic.exe
Token: SeUndockPrivilege	2272	wmic.exe
Token: SeManageVolumePrivilege	2272	wmic.exe
Token: 33	2272	wmic.exe
Token: 34	2272	wmic.exe
Token: 35	2272	wmic.exe
Token: SeIncreaseQuotaPrivilege	448	wmic.exe
Token: SeSecurityPrivilege	448	wmic.exe
Token: SeTakeOwnershipPrivilege	448	wmic.exe
Token: SeLoadDriverPrivilege	448	wmic.exe
Token: SeSystemProfilePrivilege	448	wmic.exe
Token: SeSystemtimePrivilege	448	wmic.exe
Token: SeProfSingleProcessPrivilege	448	wmic.exe
Token: SeIncBasePriorityPrivilege	448	wmic.exe
Token: SeCreatePagefilePrivilege	448	wmic.exe
Token: SeBackupPrivilege	448	wmic.exe
Token: SeRestorePrivilege	448	wmic.exe
Token: SeShutdownPrivilege	448	wmic.exe
Token: SeDebugPrivilege	448	wmic.exe
Token: SeSystemEnvironmentPrivilege	448	wmic.exe
Token: SeRemoteShutdownPrivilege	448	wmic.exe
Token: SeUndockPrivilege	448	wmic.exe
Token: SeManageVolumePrivilege	448	wmic.exe
Token: 33	448	wmic.exe
Token: 34	448	wmic.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2960 wrote to memory of 2680	2960	880291d677d6775c4d808db72a161db0N.exe	31
PID 2960 wrote to memory of 2680	2960	880291d677d6775c4d808db72a161db0N.exe	31
PID 2960 wrote to memory of 2680	2960	880291d677d6775c4d808db72a161db0N.exe	31
PID 2960 wrote to memory of 2360	2960	880291d677d6775c4d808db72a161db0N.exe	33
PID 2960 wrote to memory of 2360	2960	880291d677d6775c4d808db72a161db0N.exe	33
PID 2960 wrote to memory of 2360	2960	880291d677d6775c4d808db72a161db0N.exe	33
PID 2960 wrote to memory of 1348	2960	880291d677d6775c4d808db72a161db0N.exe	35
PID 2960 wrote to memory of 1348	2960	880291d677d6775c4d808db72a161db0N.exe	35
PID 2960 wrote to memory of 1348	2960	880291d677d6775c4d808db72a161db0N.exe	35
PID 2960 wrote to memory of 1864	2960	880291d677d6775c4d808db72a161db0N.exe	37
PID 2960 wrote to memory of 1864	2960	880291d677d6775c4d808db72a161db0N.exe	37
PID 2960 wrote to memory of 1864	2960	880291d677d6775c4d808db72a161db0N.exe	37
PID 2960 wrote to memory of 2868	2960	880291d677d6775c4d808db72a161db0N.exe	39
PID 2960 wrote to memory of 2868	2960	880291d677d6775c4d808db72a161db0N.exe	39
PID 2960 wrote to memory of 2868	2960	880291d677d6775c4d808db72a161db0N.exe	39
PID 2960 wrote to memory of 2272	2960	880291d677d6775c4d808db72a161db0N.exe	41
PID 2960 wrote to memory of 2272	2960	880291d677d6775c4d808db72a161db0N.exe	41
PID 2960 wrote to memory of 2272	2960	880291d677d6775c4d808db72a161db0N.exe	41
PID 2960 wrote to memory of 448	2960	880291d677d6775c4d808db72a161db0N.exe	44
PID 2960 wrote to memory of 448	2960	880291d677d6775c4d808db72a161db0N.exe	44
PID 2960 wrote to memory of 448	2960	880291d677d6775c4d808db72a161db0N.exe	44
PID 2960 wrote to memory of 3068	2960	880291d677d6775c4d808db72a161db0N.exe	46
PID 2960 wrote to memory of 3068	2960	880291d677d6775c4d808db72a161db0N.exe	46
PID 2960 wrote to memory of 3068	2960	880291d677d6775c4d808db72a161db0N.exe	46
PID 2960 wrote to memory of 940	2960	880291d677d6775c4d808db72a161db0N.exe	48
PID 2960 wrote to memory of 940	2960	880291d677d6775c4d808db72a161db0N.exe	48
PID 2960 wrote to memory of 940	2960	880291d677d6775c4d808db72a161db0N.exe	48
PID 2960 wrote to memory of 376	2960	880291d677d6775c4d808db72a161db0N.exe	50
PID 2960 wrote to memory of 376	2960	880291d677d6775c4d808db72a161db0N.exe	50
PID 2960 wrote to memory of 376	2960	880291d677d6775c4d808db72a161db0N.exe	50
PID 2960 wrote to memory of 2320	2960	880291d677d6775c4d808db72a161db0N.exe	52
PID 2960 wrote to memory of 2320	2960	880291d677d6775c4d808db72a161db0N.exe	52
PID 2960 wrote to memory of 2320	2960	880291d677d6775c4d808db72a161db0N.exe	52
PID 2320 wrote to memory of 2172	2320	cmd.exe	54
PID 2320 wrote to memory of 2172	2320	cmd.exe	54
PID 2320 wrote to memory of 2172	2320	cmd.exe	54

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2680	attrib.exe

C:\Users\Admin\AppData\Local\Temp\880291d677d6775c4d808db72a161db0N.exe
"C:\Users\Admin\AppData\Local\Temp\880291d677d6775c4d808db72a161db0N.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2960
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\880291d677d6775c4d808db72a161db0N.exe"
  2⤵
  - Views/modifies file attributes
  PID:2680
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\880291d677d6775c4d808db72a161db0N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2360
- 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:1348
- 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:1864
- 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:2868
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2272
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:448
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3068
- 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:940
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:376
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\880291d677d6775c4d808db72a161db0N.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2320
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2172

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\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
8a501c839429bf1a7602832e10315f87

SHA1
4b3113ee2e3b0e829129c60ec649fa5d402ed824

SHA256
dbba462c617334f4266ac9fb14797bf7291dc50b4e4e8915ba190376b179d0d8

SHA512
327b5ef5c28871ae41f5eb46ce8a4a85754c06f523a60fb69c278c76388bb7de0e66c567aeae3dc555a9f5d1ebab6d6e60fbdd1d77f3fc692e1b4614ee2d02f9

Download Submit
memory/940-51-0x000000001B5E0000-0x000000001B8C2000-memory.dmp

Filesize
2.9MB

Download
memory/1348-24-0x0000000001E70000-0x0000000001E78000-memory.dmp

Filesize
32KB

Download
memory/1348-23-0x000000001B740000-0x000000001BA22000-memory.dmp

Filesize
2.9MB

Download
memory/2360-15-0x000007FEECAF0000-0x000007FEED48D000-memory.dmp

Filesize
9.6MB

Download
memory/2360-16-0x000007FEECAF0000-0x000007FEED48D000-memory.dmp

Filesize
9.6MB

Download
memory/2360-10-0x000000001B650000-0x000000001B932000-memory.dmp

Filesize
2.9MB

Download
memory/2360-11-0x0000000002860000-0x0000000002868000-memory.dmp

Filesize
32KB

Download
memory/2360-12-0x000007FEECAF0000-0x000007FEED48D000-memory.dmp

Filesize
9.6MB

Download
memory/2360-13-0x000007FEECAF0000-0x000007FEED48D000-memory.dmp

Filesize
9.6MB

Download
memory/2360-14-0x000007FEECAF0000-0x000007FEED48D000-memory.dmp

Filesize
9.6MB

Download
memory/2360-9-0x000007FEECDAE000-0x000007FEECDAF000-memory.dmp

Filesize
4KB

Download
memory/2360-17-0x000007FEECAF0000-0x000007FEED48D000-memory.dmp

Filesize
9.6MB

Download
memory/2960-0-0x000007FEF5213000-0x000007FEF5214000-memory.dmp

Filesize
4KB

Download
memory/2960-4-0x000007FEF5210000-0x000007FEF5BFC000-memory.dmp

Filesize
9.9MB

Download
memory/2960-3-0x000007FEF5213000-0x000007FEF5214000-memory.dmp

Filesize
4KB

Download
memory/2960-2-0x000007FEF5210000-0x000007FEF5BFC000-memory.dmp

Filesize
9.9MB

Download
memory/2960-1-0x0000000000070000-0x00000000000B0000-memory.dmp

Filesize
256KB

Download
memory/2960-55-0x000007FEF5210000-0x000007FEF5BFC000-memory.dmp

Filesize
9.9MB

Download