umbral | 3dec6623a9f5488bc8fc4a3185cddd03bdda73247063875943a79dd75c5071b6

Analysis

max time kernel
147s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
11-08-2024 11:35

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General

Target

everything.exe
Size

231KB
MD5

5e487f250a2b0c04f06f37b6d66b29ba
SHA1

68d5c6fcf314df40abf53b3462cb76dce9af887e
SHA256

3dec6623a9f5488bc8fc4a3185cddd03bdda73247063875943a79dd75c5071b6
SHA512

1f428c57ee5d53fbe590f12f3e345715b528c5aaa5e971e30fe760d9bf8660a09c1dbf7f94b73c5131c4261163e2fb6932a71ccf67b1a319f0dd1b06af823e54
SSDEEP

6144:hloZM+rIkd8g+EtXHkv/iD4EmQIkqNlOhLWU1pAe4dnb8e1mAYVi:ToZtL+EP8EmQIkqNlOhLWU1pAdpd

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/1692-0-0x000002C5E1CB0000-0x000002C5E1CF0000-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
108	powershell.exe
2460	powershell.exe
3992	powershell.exe
3520	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	everything.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
6	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
1	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
1896	cmd.exe
2016	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3936	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2016	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
1692	everything.exe
108	powershell.exe
108	powershell.exe
2460	powershell.exe
2460	powershell.exe
3992	powershell.exe
3992	powershell.exe
4504	powershell.exe
4504	powershell.exe
3520	powershell.exe
3520	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1692	everything.exe
Token: SeIncreaseQuotaPrivilege	4784	wmic.exe
Token: SeSecurityPrivilege	4784	wmic.exe
Token: SeTakeOwnershipPrivilege	4784	wmic.exe
Token: SeLoadDriverPrivilege	4784	wmic.exe
Token: SeSystemProfilePrivilege	4784	wmic.exe
Token: SeSystemtimePrivilege	4784	wmic.exe
Token: SeProfSingleProcessPrivilege	4784	wmic.exe
Token: SeIncBasePriorityPrivilege	4784	wmic.exe
Token: SeCreatePagefilePrivilege	4784	wmic.exe
Token: SeBackupPrivilege	4784	wmic.exe
Token: SeRestorePrivilege	4784	wmic.exe
Token: SeShutdownPrivilege	4784	wmic.exe
Token: SeDebugPrivilege	4784	wmic.exe
Token: SeSystemEnvironmentPrivilege	4784	wmic.exe
Token: SeRemoteShutdownPrivilege	4784	wmic.exe
Token: SeUndockPrivilege	4784	wmic.exe
Token: SeManageVolumePrivilege	4784	wmic.exe
Token: 33	4784	wmic.exe
Token: 34	4784	wmic.exe
Token: 35	4784	wmic.exe
Token: 36	4784	wmic.exe
Token: SeIncreaseQuotaPrivilege	4784	wmic.exe
Token: SeSecurityPrivilege	4784	wmic.exe
Token: SeTakeOwnershipPrivilege	4784	wmic.exe
Token: SeLoadDriverPrivilege	4784	wmic.exe
Token: SeSystemProfilePrivilege	4784	wmic.exe
Token: SeSystemtimePrivilege	4784	wmic.exe
Token: SeProfSingleProcessPrivilege	4784	wmic.exe
Token: SeIncBasePriorityPrivilege	4784	wmic.exe
Token: SeCreatePagefilePrivilege	4784	wmic.exe
Token: SeBackupPrivilege	4784	wmic.exe
Token: SeRestorePrivilege	4784	wmic.exe
Token: SeShutdownPrivilege	4784	wmic.exe
Token: SeDebugPrivilege	4784	wmic.exe
Token: SeSystemEnvironmentPrivilege	4784	wmic.exe
Token: SeRemoteShutdownPrivilege	4784	wmic.exe
Token: SeUndockPrivilege	4784	wmic.exe
Token: SeManageVolumePrivilege	4784	wmic.exe
Token: 33	4784	wmic.exe
Token: 34	4784	wmic.exe
Token: 35	4784	wmic.exe
Token: 36	4784	wmic.exe
Token: SeDebugPrivilege	108	powershell.exe
Token: SeDebugPrivilege	2460	powershell.exe
Token: SeDebugPrivilege	3992	powershell.exe
Token: SeDebugPrivilege	4504	powershell.exe
Token: SeIncreaseQuotaPrivilege	700	wmic.exe
Token: SeSecurityPrivilege	700	wmic.exe
Token: SeTakeOwnershipPrivilege	700	wmic.exe
Token: SeLoadDriverPrivilege	700	wmic.exe
Token: SeSystemProfilePrivilege	700	wmic.exe
Token: SeSystemtimePrivilege	700	wmic.exe
Token: SeProfSingleProcessPrivilege	700	wmic.exe
Token: SeIncBasePriorityPrivilege	700	wmic.exe
Token: SeCreatePagefilePrivilege	700	wmic.exe
Token: SeBackupPrivilege	700	wmic.exe
Token: SeRestorePrivilege	700	wmic.exe
Token: SeShutdownPrivilege	700	wmic.exe
Token: SeDebugPrivilege	700	wmic.exe
Token: SeSystemEnvironmentPrivilege	700	wmic.exe
Token: SeRemoteShutdownPrivilege	700	wmic.exe
Token: SeUndockPrivilege	700	wmic.exe
Token: SeManageVolumePrivilege	700	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1692 wrote to memory of 4784	1692	everything.exe	81
PID 1692 wrote to memory of 4784	1692	everything.exe	81
PID 1692 wrote to memory of 3112	1692	everything.exe	84
PID 1692 wrote to memory of 3112	1692	everything.exe	84
PID 1692 wrote to memory of 108	1692	everything.exe	86
PID 1692 wrote to memory of 108	1692	everything.exe	86
PID 1692 wrote to memory of 2460	1692	everything.exe	88
PID 1692 wrote to memory of 2460	1692	everything.exe	88
PID 1692 wrote to memory of 3992	1692	everything.exe	90
PID 1692 wrote to memory of 3992	1692	everything.exe	90
PID 1692 wrote to memory of 4504	1692	everything.exe	92
PID 1692 wrote to memory of 4504	1692	everything.exe	92
PID 1692 wrote to memory of 700	1692	everything.exe	94
PID 1692 wrote to memory of 700	1692	everything.exe	94
PID 1692 wrote to memory of 5036	1692	everything.exe	96
PID 1692 wrote to memory of 5036	1692	everything.exe	96
PID 1692 wrote to memory of 2388	1692	everything.exe	98
PID 1692 wrote to memory of 2388	1692	everything.exe	98
PID 1692 wrote to memory of 3520	1692	everything.exe	100
PID 1692 wrote to memory of 3520	1692	everything.exe	100
PID 1692 wrote to memory of 3936	1692	everything.exe	102
PID 1692 wrote to memory of 3936	1692	everything.exe	102
PID 1692 wrote to memory of 1896	1692	everything.exe	104
PID 1692 wrote to memory of 1896	1692	everything.exe	104
PID 1896 wrote to memory of 2016	1896	cmd.exe	106
PID 1896 wrote to memory of 2016	1896	cmd.exe	106

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3112	attrib.exe

C:\Users\Admin\AppData\Local\Temp\everything.exe
"C:\Users\Admin\AppData\Local\Temp\everything.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1692
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4784
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\everything.exe"
  2⤵
  - Views/modifies file attributes
  PID:3112
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\everything.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:108
- 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:2460
- 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:3992
- 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:4504
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:700
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:5036
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2388
- 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:3520
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3936
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\everything.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1896
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2016

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\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
e3840d9bcedfe7017e49ee5d05bd1c46

SHA1
272620fb2605bd196df471d62db4b2d280a363c6

SHA256
3ac83e70415b9701ee71a4560232d7998e00c3db020fde669eb01b8821d2746f

SHA512
76adc88ab3930acc6b8b7668e2de797b8c00edcfc41660ee4485259c72a8adf162db62c2621ead5a9950f12bfe8a76ccab79d02fda11860afb0e217812cac376

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
948B

MD5
4b92d741d003e8d1f0394874017a6fe9

SHA1
1a4bebc2637bce160dae38d4d0bfdeb6b398059d

SHA256
8c8532230d71f0818daebff0d2ab496b02c25bdaa7156701f663b5474ad876fc

SHA512
5c2e84b072314aaae414f98f7dbeb13e030561b53270803d0cf7a8c6ed59368dcfdc4666e69abef39fcac5b75968a1174aca501023297a276a219ed0464612c6

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
57083a8e45ebe4fd84c7c0f137ec3e21

SHA1
857b5ea57f7bcf03cadee122106c6e58792a9b84

SHA256
f20102c4dc409cad3cdaf7a330c3a18a730a9d7d902b9fbee2a84186cba93d40

SHA512
4bbc21c07c05ee1f783242f0fb59324d5ff9ae18bdf892f02980d582fed83380888eeba58e1a6a321507cfd5d4fe82a328a0d3482b29633be4e3ebbeac636f87

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
8473c0720d50f160d2a0aa6f2c469195

SHA1
12178cc31b143c8e205c974340c73f34aeadb1c2

SHA256
575c9adfd431e013e5bfb5e133b805ed9e7aa77da05be167f3f8b92211e643b0

SHA512
61fe1040a5fbc1c0bf7290bc63b336152831647cafda9d491ae65f927b49fad9d8feb867115eddc8aeab6a8d5c3fd398edde0d177b11180b33982deefd52ceaf

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_expkz2d3.1li.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/108-4-0x00007FFA34AB0000-0x00007FFA35572000-memory.dmp

Filesize
10.8MB

Download
memory/108-13-0x00000243325A0000-0x00000243325C2000-memory.dmp

Filesize
136KB

Download
memory/108-14-0x00007FFA34AB0000-0x00007FFA35572000-memory.dmp

Filesize
10.8MB

Download
memory/108-17-0x00007FFA34AB0000-0x00007FFA35572000-memory.dmp

Filesize
10.8MB

Download
memory/108-3-0x00007FFA34AB0000-0x00007FFA35572000-memory.dmp

Filesize
10.8MB

Download
memory/1692-32-0x000002C5FC570000-0x000002C5FC5C0000-memory.dmp

Filesize
320KB

Download
memory/1692-31-0x000002C5FC4F0000-0x000002C5FC566000-memory.dmp

Filesize
472KB

Download
memory/1692-33-0x000002C5E39A0000-0x000002C5E39BE000-memory.dmp

Filesize
120KB

Download
memory/1692-0-0x000002C5E1CB0000-0x000002C5E1CF0000-memory.dmp

Filesize
256KB

Download
memory/1692-1-0x00007FFA34AB3000-0x00007FFA34AB5000-memory.dmp

Filesize
8KB

Download
memory/1692-67-0x000002C5E39E0000-0x000002C5E39EA000-memory.dmp

Filesize
40KB

Download
memory/1692-68-0x000002C5FC350000-0x000002C5FC362000-memory.dmp

Filesize
72KB

Download
memory/1692-2-0x00007FFA34AB0000-0x00007FFA35572000-memory.dmp

Filesize
10.8MB

Download
memory/1692-85-0x00007FFA34AB0000-0x00007FFA35572000-memory.dmp

Filesize
10.8MB

Download