umbral | 0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
06-08-2024 19:29

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General

Target

Twitch Patcheur Setup.exe
Size

288KB
MD5

2c7d3d4ad2db30f12e3cae6540601762
SHA1

7c7464861056574cd273eed99283c0498278ffb9
SHA256

0445ee531f81638261d4989a90d2202e117837fc0f992640f26720935fc07fb4
SHA512

97b30ef326820cb28dd13a9f7919a330adbc053536c62484258c08f7ff9813fc547a9364e7125a831a798f33ed848c6a29d90312ad43fdeed46e098437375dc1
SSDEEP

6144:cloZM+rIkd8g+EtXHkv/iD41Rm89rI8j067NokRvBnb8e1m16oiolUaYmprYHtI:6oZtL+EP81Rm89rI8j067NokRx3oq8pr

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2536-1-0x00000000000C0000-0x000000000010E000-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
548	powershell.exe
2732	powershell.exe
1724	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Deletes itself 1 IoCs

pid	Process
2528	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
9	discord.com
10	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
2528	cmd.exe
2092	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2316	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2092	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2536	Twitch Patcheur Setup.exe
2996	powershell.exe
548	powershell.exe
2732	powershell.exe
1228	powershell.exe
1724	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2536	Twitch Patcheur Setup.exe
Token: SeIncreaseQuotaPrivilege	2688	wmic.exe
Token: SeSecurityPrivilege	2688	wmic.exe
Token: SeTakeOwnershipPrivilege	2688	wmic.exe
Token: SeLoadDriverPrivilege	2688	wmic.exe
Token: SeSystemProfilePrivilege	2688	wmic.exe
Token: SeSystemtimePrivilege	2688	wmic.exe
Token: SeProfSingleProcessPrivilege	2688	wmic.exe
Token: SeIncBasePriorityPrivilege	2688	wmic.exe
Token: SeCreatePagefilePrivilege	2688	wmic.exe
Token: SeBackupPrivilege	2688	wmic.exe
Token: SeRestorePrivilege	2688	wmic.exe
Token: SeShutdownPrivilege	2688	wmic.exe
Token: SeDebugPrivilege	2688	wmic.exe
Token: SeSystemEnvironmentPrivilege	2688	wmic.exe
Token: SeRemoteShutdownPrivilege	2688	wmic.exe
Token: SeUndockPrivilege	2688	wmic.exe
Token: SeManageVolumePrivilege	2688	wmic.exe
Token: 33	2688	wmic.exe
Token: 34	2688	wmic.exe
Token: 35	2688	wmic.exe
Token: SeIncreaseQuotaPrivilege	2688	wmic.exe
Token: SeSecurityPrivilege	2688	wmic.exe
Token: SeTakeOwnershipPrivilege	2688	wmic.exe
Token: SeLoadDriverPrivilege	2688	wmic.exe
Token: SeSystemProfilePrivilege	2688	wmic.exe
Token: SeSystemtimePrivilege	2688	wmic.exe
Token: SeProfSingleProcessPrivilege	2688	wmic.exe
Token: SeIncBasePriorityPrivilege	2688	wmic.exe
Token: SeCreatePagefilePrivilege	2688	wmic.exe
Token: SeBackupPrivilege	2688	wmic.exe
Token: SeRestorePrivilege	2688	wmic.exe
Token: SeShutdownPrivilege	2688	wmic.exe
Token: SeDebugPrivilege	2688	wmic.exe
Token: SeSystemEnvironmentPrivilege	2688	wmic.exe
Token: SeRemoteShutdownPrivilege	2688	wmic.exe
Token: SeUndockPrivilege	2688	wmic.exe
Token: SeManageVolumePrivilege	2688	wmic.exe
Token: 33	2688	wmic.exe
Token: 34	2688	wmic.exe
Token: 35	2688	wmic.exe
Token: SeDebugPrivilege	2996	powershell.exe
Token: SeDebugPrivilege	548	powershell.exe
Token: SeDebugPrivilege	2732	powershell.exe
Token: SeDebugPrivilege	1228	powershell.exe
Token: SeIncreaseQuotaPrivilege	2936	wmic.exe
Token: SeSecurityPrivilege	2936	wmic.exe
Token: SeTakeOwnershipPrivilege	2936	wmic.exe
Token: SeLoadDriverPrivilege	2936	wmic.exe
Token: SeSystemProfilePrivilege	2936	wmic.exe
Token: SeSystemtimePrivilege	2936	wmic.exe
Token: SeProfSingleProcessPrivilege	2936	wmic.exe
Token: SeIncBasePriorityPrivilege	2936	wmic.exe
Token: SeCreatePagefilePrivilege	2936	wmic.exe
Token: SeBackupPrivilege	2936	wmic.exe
Token: SeRestorePrivilege	2936	wmic.exe
Token: SeShutdownPrivilege	2936	wmic.exe
Token: SeDebugPrivilege	2936	wmic.exe
Token: SeSystemEnvironmentPrivilege	2936	wmic.exe
Token: SeRemoteShutdownPrivilege	2936	wmic.exe
Token: SeUndockPrivilege	2936	wmic.exe
Token: SeManageVolumePrivilege	2936	wmic.exe
Token: 33	2936	wmic.exe
Token: 34	2936	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2536 wrote to memory of 2688	2536	Twitch Patcheur Setup.exe	30
PID 2536 wrote to memory of 2688	2536	Twitch Patcheur Setup.exe	30
PID 2536 wrote to memory of 2688	2536	Twitch Patcheur Setup.exe	30
PID 2536 wrote to memory of 2860	2536	Twitch Patcheur Setup.exe	34
PID 2536 wrote to memory of 2860	2536	Twitch Patcheur Setup.exe	34
PID 2536 wrote to memory of 2860	2536	Twitch Patcheur Setup.exe	34
PID 2536 wrote to memory of 2996	2536	Twitch Patcheur Setup.exe	36
PID 2536 wrote to memory of 2996	2536	Twitch Patcheur Setup.exe	36
PID 2536 wrote to memory of 2996	2536	Twitch Patcheur Setup.exe	36
PID 2536 wrote to memory of 548	2536	Twitch Patcheur Setup.exe	38
PID 2536 wrote to memory of 548	2536	Twitch Patcheur Setup.exe	38
PID 2536 wrote to memory of 548	2536	Twitch Patcheur Setup.exe	38
PID 2536 wrote to memory of 2732	2536	Twitch Patcheur Setup.exe	40
PID 2536 wrote to memory of 2732	2536	Twitch Patcheur Setup.exe	40
PID 2536 wrote to memory of 2732	2536	Twitch Patcheur Setup.exe	40
PID 2536 wrote to memory of 1228	2536	Twitch Patcheur Setup.exe	42
PID 2536 wrote to memory of 1228	2536	Twitch Patcheur Setup.exe	42
PID 2536 wrote to memory of 1228	2536	Twitch Patcheur Setup.exe	42
PID 2536 wrote to memory of 2936	2536	Twitch Patcheur Setup.exe	44
PID 2536 wrote to memory of 2936	2536	Twitch Patcheur Setup.exe	44
PID 2536 wrote to memory of 2936	2536	Twitch Patcheur Setup.exe	44
PID 2536 wrote to memory of 1492	2536	Twitch Patcheur Setup.exe	46
PID 2536 wrote to memory of 1492	2536	Twitch Patcheur Setup.exe	46
PID 2536 wrote to memory of 1492	2536	Twitch Patcheur Setup.exe	46
PID 2536 wrote to memory of 644	2536	Twitch Patcheur Setup.exe	48
PID 2536 wrote to memory of 644	2536	Twitch Patcheur Setup.exe	48
PID 2536 wrote to memory of 644	2536	Twitch Patcheur Setup.exe	48
PID 2536 wrote to memory of 1724	2536	Twitch Patcheur Setup.exe	50
PID 2536 wrote to memory of 1724	2536	Twitch Patcheur Setup.exe	50
PID 2536 wrote to memory of 1724	2536	Twitch Patcheur Setup.exe	50
PID 2536 wrote to memory of 2316	2536	Twitch Patcheur Setup.exe	52
PID 2536 wrote to memory of 2316	2536	Twitch Patcheur Setup.exe	52
PID 2536 wrote to memory of 2316	2536	Twitch Patcheur Setup.exe	52
PID 2536 wrote to memory of 2528	2536	Twitch Patcheur Setup.exe	54
PID 2536 wrote to memory of 2528	2536	Twitch Patcheur Setup.exe	54
PID 2536 wrote to memory of 2528	2536	Twitch Patcheur Setup.exe	54
PID 2528 wrote to memory of 2092	2528	cmd.exe	56
PID 2528 wrote to memory of 2092	2528	cmd.exe	56
PID 2528 wrote to memory of 2092	2528	cmd.exe	56

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2860	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Twitch Patcheur Setup.exe
"C:\Users\Admin\AppData\Local\Temp\Twitch Patcheur Setup.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2536
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2688
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Twitch Patcheur Setup.exe"
  2⤵
  - Views/modifies file attributes
  PID:2860
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Twitch Patcheur Setup.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:548
- 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:2732
- 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:1228
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2936
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1492
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:644
- 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:1724
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2316
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Twitch Patcheur Setup.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2528
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2092

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
bbd20e1c631c4c6fb8314c261d0a8425

SHA1
c5a2972ac5298b7980d015e60ad47592b8139350

SHA256
b2126a1a4cfce5357f6b30c2ff1d74f69f6cda33014227e1c4c09c67c6064d73

SHA512
2fafacaca5d1019f093476165ece26f953417f4bec7725401ff58d5b332bf46f26c424439321f86213a89b947dbf4876ef494c1be6dfe7962f9c13fe80535bd6

Download Submit
memory/548-14-0x000000001B770000-0x000000001BA52000-memory.dmp

Filesize
2.9MB

Download
memory/548-15-0x0000000001F40000-0x0000000001F48000-memory.dmp

Filesize
32KB

Download
memory/1724-42-0x0000000001E10000-0x0000000001E18000-memory.dmp

Filesize
32KB

Download
memory/2536-0-0x000007FEF6683000-0x000007FEF6684000-memory.dmp

Filesize
4KB

Download
memory/2536-1-0x00000000000C0000-0x000000000010E000-memory.dmp

Filesize
312KB

Download
memory/2536-2-0x000007FEF6680000-0x000007FEF706C000-memory.dmp

Filesize
9.9MB

Download
memory/2536-46-0x000007FEF6680000-0x000007FEF706C000-memory.dmp

Filesize
9.9MB

Download
memory/2996-7-0x000000001B870000-0x000000001BB52000-memory.dmp

Filesize
2.9MB

Download
memory/2996-8-0x0000000000300000-0x0000000000308000-memory.dmp

Filesize
32KB

Download