umbral | cf7b9914e5b25efd7b449a9426d8d2cb570440da613b0bf7b258b425d2c6a7a0

Analysis

max time kernel
95s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
18/09/2024, 07:05

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General

Target

everything.exe
Size

231KB
MD5

c230d0ffbb5ba00f2bc8a3e51c831d30
SHA1

ba14e05c5b2f9bd82895598e4e037971cb88cb75
SHA256

cf7b9914e5b25efd7b449a9426d8d2cb570440da613b0bf7b258b425d2c6a7a0
SHA512

d4930c2f78d55037819d276e4321d43b759fb063834fd6b0e494730bad35f6815c2665106a3a976e8902b58b058a09ab3d6369c56dcc16aebfa487dbf66ef318
SSDEEP

6144:RloZMArIkd8g+EtXHkv/iD4av2h3tW+xdkt/qqfsCb8e1mKi:joZHL+EP8av2h3tW+xdkt/qqfPI

Score

10^/10

umbral credential_access execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/1500-1-0x000001AEDBB40000-0x000001AEDBB80000-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
3500	powershell.exe
1124	powershell.exe
2280	powershell.exe
2172	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
24	discord.com
23	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
18	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4240	wmic.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
3500	powershell.exe
3500	powershell.exe
2172	powershell.exe
2172	powershell.exe
1124	powershell.exe
1124	powershell.exe
2976	powershell.exe
2976	powershell.exe
2280	powershell.exe
2280	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1500	everything.exe
Token: SeDebugPrivilege	3500	powershell.exe
Token: SeDebugPrivilege	2172	powershell.exe
Token: SeDebugPrivilege	1124	powershell.exe
Token: SeDebugPrivilege	2976	powershell.exe
Token: SeIncreaseQuotaPrivilege	2488	wmic.exe
Token: SeSecurityPrivilege	2488	wmic.exe
Token: SeTakeOwnershipPrivilege	2488	wmic.exe
Token: SeLoadDriverPrivilege	2488	wmic.exe
Token: SeSystemProfilePrivilege	2488	wmic.exe
Token: SeSystemtimePrivilege	2488	wmic.exe
Token: SeProfSingleProcessPrivilege	2488	wmic.exe
Token: SeIncBasePriorityPrivilege	2488	wmic.exe
Token: SeCreatePagefilePrivilege	2488	wmic.exe
Token: SeBackupPrivilege	2488	wmic.exe
Token: SeRestorePrivilege	2488	wmic.exe
Token: SeShutdownPrivilege	2488	wmic.exe
Token: SeDebugPrivilege	2488	wmic.exe
Token: SeSystemEnvironmentPrivilege	2488	wmic.exe
Token: SeRemoteShutdownPrivilege	2488	wmic.exe
Token: SeUndockPrivilege	2488	wmic.exe
Token: SeManageVolumePrivilege	2488	wmic.exe
Token: 33	2488	wmic.exe
Token: 34	2488	wmic.exe
Token: 35	2488	wmic.exe
Token: 36	2488	wmic.exe
Token: SeIncreaseQuotaPrivilege	2488	wmic.exe
Token: SeSecurityPrivilege	2488	wmic.exe
Token: SeTakeOwnershipPrivilege	2488	wmic.exe
Token: SeLoadDriverPrivilege	2488	wmic.exe
Token: SeSystemProfilePrivilege	2488	wmic.exe
Token: SeSystemtimePrivilege	2488	wmic.exe
Token: SeProfSingleProcessPrivilege	2488	wmic.exe
Token: SeIncBasePriorityPrivilege	2488	wmic.exe
Token: SeCreatePagefilePrivilege	2488	wmic.exe
Token: SeBackupPrivilege	2488	wmic.exe
Token: SeRestorePrivilege	2488	wmic.exe
Token: SeShutdownPrivilege	2488	wmic.exe
Token: SeDebugPrivilege	2488	wmic.exe
Token: SeSystemEnvironmentPrivilege	2488	wmic.exe
Token: SeRemoteShutdownPrivilege	2488	wmic.exe
Token: SeUndockPrivilege	2488	wmic.exe
Token: SeManageVolumePrivilege	2488	wmic.exe
Token: 33	2488	wmic.exe
Token: 34	2488	wmic.exe
Token: 35	2488	wmic.exe
Token: 36	2488	wmic.exe
Token: SeIncreaseQuotaPrivilege	3480	wmic.exe
Token: SeSecurityPrivilege	3480	wmic.exe
Token: SeTakeOwnershipPrivilege	3480	wmic.exe
Token: SeLoadDriverPrivilege	3480	wmic.exe
Token: SeSystemProfilePrivilege	3480	wmic.exe
Token: SeSystemtimePrivilege	3480	wmic.exe
Token: SeProfSingleProcessPrivilege	3480	wmic.exe
Token: SeIncBasePriorityPrivilege	3480	wmic.exe
Token: SeCreatePagefilePrivilege	3480	wmic.exe
Token: SeBackupPrivilege	3480	wmic.exe
Token: SeRestorePrivilege	3480	wmic.exe
Token: SeShutdownPrivilege	3480	wmic.exe
Token: SeDebugPrivilege	3480	wmic.exe
Token: SeSystemEnvironmentPrivilege	3480	wmic.exe
Token: SeRemoteShutdownPrivilege	3480	wmic.exe
Token: SeUndockPrivilege	3480	wmic.exe
Token: SeManageVolumePrivilege	3480	wmic.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1500 wrote to memory of 3500	1500	everything.exe	82
PID 1500 wrote to memory of 3500	1500	everything.exe	82
PID 1500 wrote to memory of 2172	1500	everything.exe	84
PID 1500 wrote to memory of 2172	1500	everything.exe	84
PID 1500 wrote to memory of 1124	1500	everything.exe	86
PID 1500 wrote to memory of 1124	1500	everything.exe	86
PID 1500 wrote to memory of 2976	1500	everything.exe	88
PID 1500 wrote to memory of 2976	1500	everything.exe	88
PID 1500 wrote to memory of 2488	1500	everything.exe	92
PID 1500 wrote to memory of 2488	1500	everything.exe	92
PID 1500 wrote to memory of 3480	1500	everything.exe	95
PID 1500 wrote to memory of 3480	1500	everything.exe	95
PID 1500 wrote to memory of 4304	1500	everything.exe	97
PID 1500 wrote to memory of 4304	1500	everything.exe	97
PID 1500 wrote to memory of 2280	1500	everything.exe	99
PID 1500 wrote to memory of 2280	1500	everything.exe	99
PID 1500 wrote to memory of 4240	1500	everything.exe	101
PID 1500 wrote to memory of 4240	1500	everything.exe	101

C:\Users\Admin\AppData\Local\Temp\everything.exe
"C:\Users\Admin\AppData\Local\Temp\everything.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1500
- 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:3500
- 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:2172
- 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:1124
- 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:2976
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2488
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3480
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4304
- 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:2280
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4240

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

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

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
71fa55c67a762ba70e40011153e19b3c

SHA1
a36d2bb4802a8ec7db1a68de5f0c3d6007987492

SHA256
b8be6896ca89d3ebe9ee8a94e3407483f4750badaf7fa33526817cfc926dc291

SHA512
32760af7c05e20fec8cbddf56c2df544a69335f930f1d313cd1fdceaa90ed2afe81e54ac1b6770097d6f5ca5f30955f95970171a453579aa19239a17aaefe47f

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

Filesize
944B

MD5
432507558b904755313d5b27a3dc271a

SHA1
c5f1e5c3a723f83080c38f987b289e6b08eafd70

SHA256
d037ed26ad6876ecaa84eaddff658fc90fa5c2e3a83822f140e11c30b6f61a07

SHA512
7ee8989467bd7216417600ac44244fea7249061a515396ae5860cad37b1e0167a28387b02d6e2e1dbd140e9e51fee98c6f36aa0ad559137204923374de1f5d1f

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

Filesize
948B

MD5
17d8127be94d3c1b6fcc9a4ed585003e

SHA1
789874fcc7c778c723f3e89822d8cc8750c6c4c8

SHA256
ea357ad1f95863b3618d31e5b0f90495331f64de2b784d9e185b48668c937a7b

SHA512
bb18b6d07d82227f5cfbe3eb460df79ec892c560ad2964dcd4782aa26336ae15059843bf46a739bdd4a4daa58057f99102531a756a1cf434ce6449b3cd35a98e

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

Filesize
1KB

MD5
548dd08570d121a65e82abb7171cae1c

SHA1
1a1b5084b3a78f3acd0d811cc79dbcac121217ab

SHA256
cdf17b8532ebcebac3cfe23954a30aa32edd268d040da79c82687e4ccb044adc

SHA512
37b98b09178b51eec9599af90d027d2f1028202efc1633047e16e41f1a95610984af5620baac07db085ccfcb96942aafffad17aa1f44f63233e83869dc9f697b

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

Filesize
1KB

MD5
208ef39582a181fb8c043a14d824206d

SHA1
d0fabc499994dc11b403fef0ca1e66d831ea478e

SHA256
b66b9feb94f0bf97089404fd46920776ef78a80103f65ef08eb7c847d696c210

SHA512
5ed74b727aa712c1b9501a7ec734c82ba20d30e6c127f531b8fde9051f25882fde187ca90cfe2bb9ceb4347d41d64d76a1b098a995293fe5ca7aaa0312044ae5

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mdkxnd5n.3cf.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1500-71-0x000001AEF60F0000-0x000001AEF60FA000-memory.dmp

Filesize
40KB

Download
memory/1500-35-0x000001AEDD9D0000-0x000001AEDD9EE000-memory.dmp

Filesize
120KB

Download
memory/1500-90-0x00007FF9837D0000-0x00007FF984291000-memory.dmp

Filesize
10.8MB

Download
memory/1500-72-0x000001AEF6120000-0x000001AEF6132000-memory.dmp

Filesize
72KB

Download
memory/1500-2-0x00007FF9837D0000-0x00007FF984291000-memory.dmp

Filesize
10.8MB

Download
memory/1500-33-0x000001AEF6140000-0x000001AEF61B6000-memory.dmp

Filesize
472KB

Download
memory/1500-34-0x000001AEF6320000-0x000001AEF6370000-memory.dmp

Filesize
320KB

Download
memory/1500-0-0x00007FF9837D3000-0x00007FF9837D5000-memory.dmp

Filesize
8KB

Download
memory/1500-1-0x000001AEDBB40000-0x000001AEDBB80000-memory.dmp

Filesize
256KB

Download
memory/3500-15-0x00007FF9837D0000-0x00007FF984291000-memory.dmp

Filesize
10.8MB

Download
memory/3500-14-0x00007FF9837D0000-0x00007FF984291000-memory.dmp

Filesize
10.8MB

Download
memory/3500-12-0x000001A1727C0000-0x000001A1727E2000-memory.dmp

Filesize
136KB

Download
memory/3500-13-0x00007FF9837D0000-0x00007FF984291000-memory.dmp

Filesize
10.8MB

Download
memory/3500-18-0x00007FF9837D0000-0x00007FF984291000-memory.dmp

Filesize
10.8MB

Download