umbral | d87db916c3d491a3616f4db964b0af304b44e82240508aae6cf0616939cc937f

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
25-08-2024 22:13

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General

Target

d3ccce85ce8dfc4087cca43248f44920N.exe
Size

394KB
MD5

d3ccce85ce8dfc4087cca43248f44920
SHA1

547a8a789d9167946b5e80a1123ff0aedd04be37
SHA256

d87db916c3d491a3616f4db964b0af304b44e82240508aae6cf0616939cc937f
SHA512

5b025da2ad754d4e95a9d3ca58af01fc666c7350056e92d781cfbf5c76d19eaebecef3bcc4c2fd2c05ae55f9c71581d39f6b57869c22897bf516c99f4a908e8d
SSDEEP

6144:YloZMArIkd8g+EtXHkv/iD4BAHCtxdc8e1mQCiNUhcX7elbKTuq9bfF/H9d9n:GoZHL+EP8y2xw5XN3X3uO

Score

10^/10

umbral credential_access execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2484-1-0x00000000002F0000-0x0000000000358000-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
2384	powershell.exe
2816	powershell.exe
2252	powershell.exe
2948	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	d3ccce85ce8dfc4087cca43248f44920N.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

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2968	wmic.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2384	powershell.exe
2816	powershell.exe
2252	powershell.exe
2604	powershell.exe
2948	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2484	d3ccce85ce8dfc4087cca43248f44920N.exe
Token: SeDebugPrivilege	2384	powershell.exe
Token: SeDebugPrivilege	2816	powershell.exe
Token: SeDebugPrivilege	2252	powershell.exe
Token: SeDebugPrivilege	2604	powershell.exe
Token: SeIncreaseQuotaPrivilege	2004	wmic.exe
Token: SeSecurityPrivilege	2004	wmic.exe
Token: SeTakeOwnershipPrivilege	2004	wmic.exe
Token: SeLoadDriverPrivilege	2004	wmic.exe
Token: SeSystemProfilePrivilege	2004	wmic.exe
Token: SeSystemtimePrivilege	2004	wmic.exe
Token: SeProfSingleProcessPrivilege	2004	wmic.exe
Token: SeIncBasePriorityPrivilege	2004	wmic.exe
Token: SeCreatePagefilePrivilege	2004	wmic.exe
Token: SeBackupPrivilege	2004	wmic.exe
Token: SeRestorePrivilege	2004	wmic.exe
Token: SeShutdownPrivilege	2004	wmic.exe
Token: SeDebugPrivilege	2004	wmic.exe
Token: SeSystemEnvironmentPrivilege	2004	wmic.exe
Token: SeRemoteShutdownPrivilege	2004	wmic.exe
Token: SeUndockPrivilege	2004	wmic.exe
Token: SeManageVolumePrivilege	2004	wmic.exe
Token: 33	2004	wmic.exe
Token: 34	2004	wmic.exe
Token: 35	2004	wmic.exe
Token: SeIncreaseQuotaPrivilege	2004	wmic.exe
Token: SeSecurityPrivilege	2004	wmic.exe
Token: SeTakeOwnershipPrivilege	2004	wmic.exe
Token: SeLoadDriverPrivilege	2004	wmic.exe
Token: SeSystemProfilePrivilege	2004	wmic.exe
Token: SeSystemtimePrivilege	2004	wmic.exe
Token: SeProfSingleProcessPrivilege	2004	wmic.exe
Token: SeIncBasePriorityPrivilege	2004	wmic.exe
Token: SeCreatePagefilePrivilege	2004	wmic.exe
Token: SeBackupPrivilege	2004	wmic.exe
Token: SeRestorePrivilege	2004	wmic.exe
Token: SeShutdownPrivilege	2004	wmic.exe
Token: SeDebugPrivilege	2004	wmic.exe
Token: SeSystemEnvironmentPrivilege	2004	wmic.exe
Token: SeRemoteShutdownPrivilege	2004	wmic.exe
Token: SeUndockPrivilege	2004	wmic.exe
Token: SeManageVolumePrivilege	2004	wmic.exe
Token: 33	2004	wmic.exe
Token: 34	2004	wmic.exe
Token: 35	2004	wmic.exe
Token: SeIncreaseQuotaPrivilege	1876	wmic.exe
Token: SeSecurityPrivilege	1876	wmic.exe
Token: SeTakeOwnershipPrivilege	1876	wmic.exe
Token: SeLoadDriverPrivilege	1876	wmic.exe
Token: SeSystemProfilePrivilege	1876	wmic.exe
Token: SeSystemtimePrivilege	1876	wmic.exe
Token: SeProfSingleProcessPrivilege	1876	wmic.exe
Token: SeIncBasePriorityPrivilege	1876	wmic.exe
Token: SeCreatePagefilePrivilege	1876	wmic.exe
Token: SeBackupPrivilege	1876	wmic.exe
Token: SeRestorePrivilege	1876	wmic.exe
Token: SeShutdownPrivilege	1876	wmic.exe
Token: SeDebugPrivilege	1876	wmic.exe
Token: SeSystemEnvironmentPrivilege	1876	wmic.exe
Token: SeRemoteShutdownPrivilege	1876	wmic.exe
Token: SeUndockPrivilege	1876	wmic.exe
Token: SeManageVolumePrivilege	1876	wmic.exe
Token: 33	1876	wmic.exe
Token: 34	1876	wmic.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2484 wrote to memory of 2384	2484	d3ccce85ce8dfc4087cca43248f44920N.exe	30
PID 2484 wrote to memory of 2384	2484	d3ccce85ce8dfc4087cca43248f44920N.exe	30
PID 2484 wrote to memory of 2384	2484	d3ccce85ce8dfc4087cca43248f44920N.exe	30
PID 2484 wrote to memory of 2816	2484	d3ccce85ce8dfc4087cca43248f44920N.exe	32
PID 2484 wrote to memory of 2816	2484	d3ccce85ce8dfc4087cca43248f44920N.exe	32
PID 2484 wrote to memory of 2816	2484	d3ccce85ce8dfc4087cca43248f44920N.exe	32
PID 2484 wrote to memory of 2252	2484	d3ccce85ce8dfc4087cca43248f44920N.exe	34
PID 2484 wrote to memory of 2252	2484	d3ccce85ce8dfc4087cca43248f44920N.exe	34
PID 2484 wrote to memory of 2252	2484	d3ccce85ce8dfc4087cca43248f44920N.exe	34
PID 2484 wrote to memory of 2604	2484	d3ccce85ce8dfc4087cca43248f44920N.exe	36
PID 2484 wrote to memory of 2604	2484	d3ccce85ce8dfc4087cca43248f44920N.exe	36
PID 2484 wrote to memory of 2604	2484	d3ccce85ce8dfc4087cca43248f44920N.exe	36
PID 2484 wrote to memory of 2004	2484	d3ccce85ce8dfc4087cca43248f44920N.exe	39
PID 2484 wrote to memory of 2004	2484	d3ccce85ce8dfc4087cca43248f44920N.exe	39
PID 2484 wrote to memory of 2004	2484	d3ccce85ce8dfc4087cca43248f44920N.exe	39
PID 2484 wrote to memory of 1876	2484	d3ccce85ce8dfc4087cca43248f44920N.exe	42
PID 2484 wrote to memory of 1876	2484	d3ccce85ce8dfc4087cca43248f44920N.exe	42
PID 2484 wrote to memory of 1876	2484	d3ccce85ce8dfc4087cca43248f44920N.exe	42
PID 2484 wrote to memory of 1436	2484	d3ccce85ce8dfc4087cca43248f44920N.exe	44
PID 2484 wrote to memory of 1436	2484	d3ccce85ce8dfc4087cca43248f44920N.exe	44
PID 2484 wrote to memory of 1436	2484	d3ccce85ce8dfc4087cca43248f44920N.exe	44
PID 2484 wrote to memory of 2948	2484	d3ccce85ce8dfc4087cca43248f44920N.exe	46
PID 2484 wrote to memory of 2948	2484	d3ccce85ce8dfc4087cca43248f44920N.exe	46
PID 2484 wrote to memory of 2948	2484	d3ccce85ce8dfc4087cca43248f44920N.exe	46
PID 2484 wrote to memory of 2968	2484	d3ccce85ce8dfc4087cca43248f44920N.exe	48
PID 2484 wrote to memory of 2968	2484	d3ccce85ce8dfc4087cca43248f44920N.exe	48
PID 2484 wrote to memory of 2968	2484	d3ccce85ce8dfc4087cca43248f44920N.exe	48

C:\Users\Admin\AppData\Local\Temp\d3ccce85ce8dfc4087cca43248f44920N.exe
"C:\Users\Admin\AppData\Local\Temp\d3ccce85ce8dfc4087cca43248f44920N.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2484
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\d3ccce85ce8dfc4087cca43248f44920N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2384
- 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:2816
- 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:2252
- 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:2604
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2004
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1876
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1436
- 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:2948
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2968

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\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
f9cc9aa937ca0f0f80fbaada8e46a116

SHA1
abf62013bb052c82c7e4d27342d7f68a4b8ca8fb

SHA256
fa7300e78467df26cd0f0693fcaef9afb65f9629119c91ca71393b055c10f7e7

SHA512
82e829728f9352e90e3c47b4104d8702723a479af6ba9f7c66ee89792b13d3fe4ae9ccf277fe339020830408fb65984deafe35c5b5a7c1465ca541162c39c224

Download Submit
memory/2384-11-0x000007FEED9B0000-0x000007FEEE34D000-memory.dmp

Filesize
9.6MB

Download
memory/2384-7-0x000007FEEDC6E000-0x000007FEEDC6F000-memory.dmp

Filesize
4KB

Download
memory/2384-14-0x000007FEED9B0000-0x000007FEEE34D000-memory.dmp

Filesize
9.6MB

Download
memory/2384-15-0x000007FEED9B0000-0x000007FEEE34D000-memory.dmp

Filesize
9.6MB

Download
memory/2384-10-0x0000000002340000-0x0000000002348000-memory.dmp

Filesize
32KB

Download
memory/2384-9-0x000007FEED9B0000-0x000007FEEE34D000-memory.dmp

Filesize
9.6MB

Download
memory/2384-8-0x000000001B640000-0x000000001B922000-memory.dmp

Filesize
2.9MB

Download
memory/2384-12-0x000007FEED9B0000-0x000007FEEE34D000-memory.dmp

Filesize
9.6MB

Download
memory/2384-13-0x000007FEED9B0000-0x000007FEEE34D000-memory.dmp

Filesize
9.6MB

Download
memory/2484-2-0x000007FEF5D60000-0x000007FEF674C000-memory.dmp

Filesize
9.9MB

Download
memory/2484-0-0x000007FEF5D63000-0x000007FEF5D64000-memory.dmp

Filesize
4KB

Download
memory/2484-1-0x00000000002F0000-0x0000000000358000-memory.dmp

Filesize
416KB

Download
memory/2484-44-0x000007FEF5D63000-0x000007FEF5D64000-memory.dmp

Filesize
4KB

Download
memory/2484-45-0x000007FEF5D60000-0x000007FEF674C000-memory.dmp

Filesize
9.9MB

Download
memory/2484-55-0x000007FEF5D60000-0x000007FEF674C000-memory.dmp

Filesize
9.9MB

Download
memory/2816-21-0x000000001B550000-0x000000001B832000-memory.dmp

Filesize
2.9MB

Download
memory/2816-22-0x0000000002760000-0x0000000002768000-memory.dmp

Filesize
32KB

Download
memory/2948-51-0x0000000001D10000-0x0000000001D18000-memory.dmp

Filesize
32KB

Download