umbral | 0459819aa58da70fda8417237b745032864dd32efdfe87f707161871f749e0b2

Analysis

max time kernel
18s
max time network
20s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
28-08-2024 21:10

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General

Target

eba38446b23a272418ba61781ccf6350N.exe
Size

231KB
MD5

eba38446b23a272418ba61781ccf6350
SHA1

fd17a55b20a1b42d0cd1199e6e5258804949f2f1
SHA256

0459819aa58da70fda8417237b745032864dd32efdfe87f707161871f749e0b2
SHA512

0f451718aa0bcee81d5795c560c1ca79d397ec1a39b50631e204f5bc8d870093015614a40aa9f68260afb236dc433cbc82e8227b648203e545333567d555fa1a
SSDEEP

6144:oloZM+rIkd8g+EtXHkv/iD4mjOmZHMgPru35EwFjUb8e1mzPi:2oZtL+EP8mjOmZHMgPru35EwFQUa

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2732-1-0x0000000000DB0000-0x0000000000DF0000-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
2588	powershell.exe
3040	powershell.exe
2136	powershell.exe
520	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	eba38446b23a272418ba61781ccf6350N.exe

Deletes itself 1 IoCs

pid	Process
2376	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
2376	cmd.exe
2032	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2216	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2032	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2732	eba38446b23a272418ba61781ccf6350N.exe
2588	powershell.exe
3040	powershell.exe
2136	powershell.exe
2160	powershell.exe
520	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2732	eba38446b23a272418ba61781ccf6350N.exe
Token: SeIncreaseQuotaPrivilege	2760	wmic.exe
Token: SeSecurityPrivilege	2760	wmic.exe
Token: SeTakeOwnershipPrivilege	2760	wmic.exe
Token: SeLoadDriverPrivilege	2760	wmic.exe
Token: SeSystemProfilePrivilege	2760	wmic.exe
Token: SeSystemtimePrivilege	2760	wmic.exe
Token: SeProfSingleProcessPrivilege	2760	wmic.exe
Token: SeIncBasePriorityPrivilege	2760	wmic.exe
Token: SeCreatePagefilePrivilege	2760	wmic.exe
Token: SeBackupPrivilege	2760	wmic.exe
Token: SeRestorePrivilege	2760	wmic.exe
Token: SeShutdownPrivilege	2760	wmic.exe
Token: SeDebugPrivilege	2760	wmic.exe
Token: SeSystemEnvironmentPrivilege	2760	wmic.exe
Token: SeRemoteShutdownPrivilege	2760	wmic.exe
Token: SeUndockPrivilege	2760	wmic.exe
Token: SeManageVolumePrivilege	2760	wmic.exe
Token: 33	2760	wmic.exe
Token: 34	2760	wmic.exe
Token: 35	2760	wmic.exe
Token: SeIncreaseQuotaPrivilege	2760	wmic.exe
Token: SeSecurityPrivilege	2760	wmic.exe
Token: SeTakeOwnershipPrivilege	2760	wmic.exe
Token: SeLoadDriverPrivilege	2760	wmic.exe
Token: SeSystemProfilePrivilege	2760	wmic.exe
Token: SeSystemtimePrivilege	2760	wmic.exe
Token: SeProfSingleProcessPrivilege	2760	wmic.exe
Token: SeIncBasePriorityPrivilege	2760	wmic.exe
Token: SeCreatePagefilePrivilege	2760	wmic.exe
Token: SeBackupPrivilege	2760	wmic.exe
Token: SeRestorePrivilege	2760	wmic.exe
Token: SeShutdownPrivilege	2760	wmic.exe
Token: SeDebugPrivilege	2760	wmic.exe
Token: SeSystemEnvironmentPrivilege	2760	wmic.exe
Token: SeRemoteShutdownPrivilege	2760	wmic.exe
Token: SeUndockPrivilege	2760	wmic.exe
Token: SeManageVolumePrivilege	2760	wmic.exe
Token: 33	2760	wmic.exe
Token: 34	2760	wmic.exe
Token: 35	2760	wmic.exe
Token: SeDebugPrivilege	2588	powershell.exe
Token: SeDebugPrivilege	3040	powershell.exe
Token: SeDebugPrivilege	2136	powershell.exe
Token: SeDebugPrivilege	2160	powershell.exe
Token: SeIncreaseQuotaPrivilege	1456	wmic.exe
Token: SeSecurityPrivilege	1456	wmic.exe
Token: SeTakeOwnershipPrivilege	1456	wmic.exe
Token: SeLoadDriverPrivilege	1456	wmic.exe
Token: SeSystemProfilePrivilege	1456	wmic.exe
Token: SeSystemtimePrivilege	1456	wmic.exe
Token: SeProfSingleProcessPrivilege	1456	wmic.exe
Token: SeIncBasePriorityPrivilege	1456	wmic.exe
Token: SeCreatePagefilePrivilege	1456	wmic.exe
Token: SeBackupPrivilege	1456	wmic.exe
Token: SeRestorePrivilege	1456	wmic.exe
Token: SeShutdownPrivilege	1456	wmic.exe
Token: SeDebugPrivilege	1456	wmic.exe
Token: SeSystemEnvironmentPrivilege	1456	wmic.exe
Token: SeRemoteShutdownPrivilege	1456	wmic.exe
Token: SeUndockPrivilege	1456	wmic.exe
Token: SeManageVolumePrivilege	1456	wmic.exe
Token: 33	1456	wmic.exe
Token: 34	1456	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2732 wrote to memory of 2760	2732	eba38446b23a272418ba61781ccf6350N.exe	30
PID 2732 wrote to memory of 2760	2732	eba38446b23a272418ba61781ccf6350N.exe	30
PID 2732 wrote to memory of 2760	2732	eba38446b23a272418ba61781ccf6350N.exe	30
PID 2732 wrote to memory of 2696	2732	eba38446b23a272418ba61781ccf6350N.exe	33
PID 2732 wrote to memory of 2696	2732	eba38446b23a272418ba61781ccf6350N.exe	33
PID 2732 wrote to memory of 2696	2732	eba38446b23a272418ba61781ccf6350N.exe	33
PID 2732 wrote to memory of 2588	2732	eba38446b23a272418ba61781ccf6350N.exe	35
PID 2732 wrote to memory of 2588	2732	eba38446b23a272418ba61781ccf6350N.exe	35
PID 2732 wrote to memory of 2588	2732	eba38446b23a272418ba61781ccf6350N.exe	35
PID 2732 wrote to memory of 3040	2732	eba38446b23a272418ba61781ccf6350N.exe	37
PID 2732 wrote to memory of 3040	2732	eba38446b23a272418ba61781ccf6350N.exe	37
PID 2732 wrote to memory of 3040	2732	eba38446b23a272418ba61781ccf6350N.exe	37
PID 2732 wrote to memory of 2136	2732	eba38446b23a272418ba61781ccf6350N.exe	39
PID 2732 wrote to memory of 2136	2732	eba38446b23a272418ba61781ccf6350N.exe	39
PID 2732 wrote to memory of 2136	2732	eba38446b23a272418ba61781ccf6350N.exe	39
PID 2732 wrote to memory of 2160	2732	eba38446b23a272418ba61781ccf6350N.exe	41
PID 2732 wrote to memory of 2160	2732	eba38446b23a272418ba61781ccf6350N.exe	41
PID 2732 wrote to memory of 2160	2732	eba38446b23a272418ba61781ccf6350N.exe	41
PID 2732 wrote to memory of 1456	2732	eba38446b23a272418ba61781ccf6350N.exe	43
PID 2732 wrote to memory of 1456	2732	eba38446b23a272418ba61781ccf6350N.exe	43
PID 2732 wrote to memory of 1456	2732	eba38446b23a272418ba61781ccf6350N.exe	43
PID 2732 wrote to memory of 2140	2732	eba38446b23a272418ba61781ccf6350N.exe	45
PID 2732 wrote to memory of 2140	2732	eba38446b23a272418ba61781ccf6350N.exe	45
PID 2732 wrote to memory of 2140	2732	eba38446b23a272418ba61781ccf6350N.exe	45
PID 2732 wrote to memory of 668	2732	eba38446b23a272418ba61781ccf6350N.exe	47
PID 2732 wrote to memory of 668	2732	eba38446b23a272418ba61781ccf6350N.exe	47
PID 2732 wrote to memory of 668	2732	eba38446b23a272418ba61781ccf6350N.exe	47
PID 2732 wrote to memory of 520	2732	eba38446b23a272418ba61781ccf6350N.exe	49
PID 2732 wrote to memory of 520	2732	eba38446b23a272418ba61781ccf6350N.exe	49
PID 2732 wrote to memory of 520	2732	eba38446b23a272418ba61781ccf6350N.exe	49
PID 2732 wrote to memory of 2216	2732	eba38446b23a272418ba61781ccf6350N.exe	51
PID 2732 wrote to memory of 2216	2732	eba38446b23a272418ba61781ccf6350N.exe	51
PID 2732 wrote to memory of 2216	2732	eba38446b23a272418ba61781ccf6350N.exe	51
PID 2732 wrote to memory of 2376	2732	eba38446b23a272418ba61781ccf6350N.exe	53
PID 2732 wrote to memory of 2376	2732	eba38446b23a272418ba61781ccf6350N.exe	53
PID 2732 wrote to memory of 2376	2732	eba38446b23a272418ba61781ccf6350N.exe	53
PID 2376 wrote to memory of 2032	2376	cmd.exe	55
PID 2376 wrote to memory of 2032	2376	cmd.exe	55
PID 2376 wrote to memory of 2032	2376	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2696	attrib.exe

C:\Users\Admin\AppData\Local\Temp\eba38446b23a272418ba61781ccf6350N.exe
"C:\Users\Admin\AppData\Local\Temp\eba38446b23a272418ba61781ccf6350N.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2732
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2760
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\eba38446b23a272418ba61781ccf6350N.exe"
  2⤵
  - Views/modifies file attributes
  PID:2696
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\eba38446b23a272418ba61781ccf6350N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2588
- 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:3040
- 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:2136
- 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:2160
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1456
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2140
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:668
- 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:520
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2216
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\eba38446b23a272418ba61781ccf6350N.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2376
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2032

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
52b1f2be071b601f01b8189d7011d09c

SHA1
d4701f187ab8eb2e5c132622efc99392482f4b3f

SHA256
467ecc7a2cb319ea1f30828e3583f6afdf1ef86422710a625984760091d1b4e3

SHA512
83fd50717f3da3c7de0c8bfe2b20c61a55b20d5ba64a8eabec162ae1aa44f62b3563b54fd4ae2da7be5a8925c316725f5704588e1d015b97a2fe334968f3e71c

Download Submit
memory/520-45-0x0000000002390000-0x0000000002398000-memory.dmp

Filesize
32KB

Download
memory/520-44-0x000000001B2B0000-0x000000001B592000-memory.dmp

Filesize
2.9MB

Download
memory/2588-7-0x000000001B3D0000-0x000000001B6B2000-memory.dmp

Filesize
2.9MB

Download
memory/2588-8-0x00000000022E0000-0x00000000022E8000-memory.dmp

Filesize
32KB

Download
memory/2732-38-0x000007FEF5700000-0x000007FEF60EC000-memory.dmp

Filesize
9.9MB

Download
memory/2732-34-0x000007FEF5703000-0x000007FEF5704000-memory.dmp

Filesize
4KB

Download
memory/2732-0-0x000007FEF5703000-0x000007FEF5704000-memory.dmp

Filesize
4KB

Download
memory/2732-2-0x000007FEF5700000-0x000007FEF60EC000-memory.dmp

Filesize
9.9MB

Download
memory/2732-1-0x0000000000DB0000-0x0000000000DF0000-memory.dmp

Filesize
256KB

Download
memory/2732-49-0x000007FEF5700000-0x000007FEF60EC000-memory.dmp

Filesize
9.9MB

Download
memory/3040-14-0x000000001B2B0000-0x000000001B592000-memory.dmp

Filesize
2.9MB

Download
memory/3040-15-0x0000000001F90000-0x0000000001F98000-memory.dmp

Filesize
32KB

Download