umbral | 0459819aa58da70fda8417237b745032864dd32efdfe87f707161871f749e0b2

Analysis

max time kernel
105s
max time network
106s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-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
behavioral2/memory/4952-1-0x00000256FAD80000-0x00000256FADC0000-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
1280	powershell.exe
1436	powershell.exe
3372	powershell.exe
3048	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	eba38446b23a272418ba61781ccf6350N.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
31	discord.com
32	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
7	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
4536	PING.EXE
760	cmd.exe

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4668	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4536	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4952	eba38446b23a272418ba61781ccf6350N.exe
1280	powershell.exe
1280	powershell.exe
3372	powershell.exe
3372	powershell.exe
3048	powershell.exe
3048	powershell.exe
3396	powershell.exe
3396	powershell.exe
1436	powershell.exe
1436	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4952	eba38446b23a272418ba61781ccf6350N.exe
Token: SeIncreaseQuotaPrivilege	4136	wmic.exe
Token: SeSecurityPrivilege	4136	wmic.exe
Token: SeTakeOwnershipPrivilege	4136	wmic.exe
Token: SeLoadDriverPrivilege	4136	wmic.exe
Token: SeSystemProfilePrivilege	4136	wmic.exe
Token: SeSystemtimePrivilege	4136	wmic.exe
Token: SeProfSingleProcessPrivilege	4136	wmic.exe
Token: SeIncBasePriorityPrivilege	4136	wmic.exe
Token: SeCreatePagefilePrivilege	4136	wmic.exe
Token: SeBackupPrivilege	4136	wmic.exe
Token: SeRestorePrivilege	4136	wmic.exe
Token: SeShutdownPrivilege	4136	wmic.exe
Token: SeDebugPrivilege	4136	wmic.exe
Token: SeSystemEnvironmentPrivilege	4136	wmic.exe
Token: SeRemoteShutdownPrivilege	4136	wmic.exe
Token: SeUndockPrivilege	4136	wmic.exe
Token: SeManageVolumePrivilege	4136	wmic.exe
Token: 33	4136	wmic.exe
Token: 34	4136	wmic.exe
Token: 35	4136	wmic.exe
Token: 36	4136	wmic.exe
Token: SeIncreaseQuotaPrivilege	4136	wmic.exe
Token: SeSecurityPrivilege	4136	wmic.exe
Token: SeTakeOwnershipPrivilege	4136	wmic.exe
Token: SeLoadDriverPrivilege	4136	wmic.exe
Token: SeSystemProfilePrivilege	4136	wmic.exe
Token: SeSystemtimePrivilege	4136	wmic.exe
Token: SeProfSingleProcessPrivilege	4136	wmic.exe
Token: SeIncBasePriorityPrivilege	4136	wmic.exe
Token: SeCreatePagefilePrivilege	4136	wmic.exe
Token: SeBackupPrivilege	4136	wmic.exe
Token: SeRestorePrivilege	4136	wmic.exe
Token: SeShutdownPrivilege	4136	wmic.exe
Token: SeDebugPrivilege	4136	wmic.exe
Token: SeSystemEnvironmentPrivilege	4136	wmic.exe
Token: SeRemoteShutdownPrivilege	4136	wmic.exe
Token: SeUndockPrivilege	4136	wmic.exe
Token: SeManageVolumePrivilege	4136	wmic.exe
Token: 33	4136	wmic.exe
Token: 34	4136	wmic.exe
Token: 35	4136	wmic.exe
Token: 36	4136	wmic.exe
Token: SeDebugPrivilege	1280	powershell.exe
Token: SeDebugPrivilege	3372	powershell.exe
Token: SeDebugPrivilege	3048	powershell.exe
Token: SeDebugPrivilege	3396	powershell.exe
Token: SeIncreaseQuotaPrivilege	4368	wmic.exe
Token: SeSecurityPrivilege	4368	wmic.exe
Token: SeTakeOwnershipPrivilege	4368	wmic.exe
Token: SeLoadDriverPrivilege	4368	wmic.exe
Token: SeSystemProfilePrivilege	4368	wmic.exe
Token: SeSystemtimePrivilege	4368	wmic.exe
Token: SeProfSingleProcessPrivilege	4368	wmic.exe
Token: SeIncBasePriorityPrivilege	4368	wmic.exe
Token: SeCreatePagefilePrivilege	4368	wmic.exe
Token: SeBackupPrivilege	4368	wmic.exe
Token: SeRestorePrivilege	4368	wmic.exe
Token: SeShutdownPrivilege	4368	wmic.exe
Token: SeDebugPrivilege	4368	wmic.exe
Token: SeSystemEnvironmentPrivilege	4368	wmic.exe
Token: SeRemoteShutdownPrivilege	4368	wmic.exe
Token: SeUndockPrivilege	4368	wmic.exe
Token: SeManageVolumePrivilege	4368	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4952 wrote to memory of 4136	4952	eba38446b23a272418ba61781ccf6350N.exe	85
PID 4952 wrote to memory of 4136	4952	eba38446b23a272418ba61781ccf6350N.exe	85
PID 4952 wrote to memory of 4376	4952	eba38446b23a272418ba61781ccf6350N.exe	90
PID 4952 wrote to memory of 4376	4952	eba38446b23a272418ba61781ccf6350N.exe	90
PID 4952 wrote to memory of 1280	4952	eba38446b23a272418ba61781ccf6350N.exe	92
PID 4952 wrote to memory of 1280	4952	eba38446b23a272418ba61781ccf6350N.exe	92
PID 4952 wrote to memory of 3372	4952	eba38446b23a272418ba61781ccf6350N.exe	95
PID 4952 wrote to memory of 3372	4952	eba38446b23a272418ba61781ccf6350N.exe	95
PID 4952 wrote to memory of 3048	4952	eba38446b23a272418ba61781ccf6350N.exe	97
PID 4952 wrote to memory of 3048	4952	eba38446b23a272418ba61781ccf6350N.exe	97
PID 4952 wrote to memory of 3396	4952	eba38446b23a272418ba61781ccf6350N.exe	99
PID 4952 wrote to memory of 3396	4952	eba38446b23a272418ba61781ccf6350N.exe	99
PID 4952 wrote to memory of 4368	4952	eba38446b23a272418ba61781ccf6350N.exe	104
PID 4952 wrote to memory of 4368	4952	eba38446b23a272418ba61781ccf6350N.exe	104
PID 4952 wrote to memory of 1192	4952	eba38446b23a272418ba61781ccf6350N.exe	106
PID 4952 wrote to memory of 1192	4952	eba38446b23a272418ba61781ccf6350N.exe	106
PID 4952 wrote to memory of 1612	4952	eba38446b23a272418ba61781ccf6350N.exe	108
PID 4952 wrote to memory of 1612	4952	eba38446b23a272418ba61781ccf6350N.exe	108
PID 4952 wrote to memory of 1436	4952	eba38446b23a272418ba61781ccf6350N.exe	110
PID 4952 wrote to memory of 1436	4952	eba38446b23a272418ba61781ccf6350N.exe	110
PID 4952 wrote to memory of 4668	4952	eba38446b23a272418ba61781ccf6350N.exe	112
PID 4952 wrote to memory of 4668	4952	eba38446b23a272418ba61781ccf6350N.exe	112
PID 4952 wrote to memory of 760	4952	eba38446b23a272418ba61781ccf6350N.exe	115
PID 4952 wrote to memory of 760	4952	eba38446b23a272418ba61781ccf6350N.exe	115
PID 760 wrote to memory of 4536	760	cmd.exe	117
PID 760 wrote to memory of 4536	760	cmd.exe	117

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4376	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:4952
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4136
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\eba38446b23a272418ba61781ccf6350N.exe"
  2⤵
  - Views/modifies file attributes
  PID:4376
- 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:1280
- 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:3372
- 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:3048
- 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:3396
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4368
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1192
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1612
- 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:1436
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4668
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\eba38446b23a272418ba61781ccf6350N.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:760
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4536

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
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

Filesize
944B

MD5
6d3e9c29fe44e90aae6ed30ccf799ca8

SHA1
c7974ef72264bbdf13a2793ccf1aed11bc565dce

SHA256
2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

SHA512
60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

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

Filesize
948B

MD5
966914e2e771de7a4a57a95b6ecfa8a9

SHA1
7a32282fd51dd032967ed4d9a40cc57e265aeff2

SHA256
98d3c70d7004fa807897317bd6cd3e977b9b6c72d4d2565aca0f9f8b1c315cba

SHA512
dc39c7124a9c7c8d4c7e8e16290c46360b8d9a8f4e43edaacbbeb09bdcf20159a53db54d2b322372001b6a3de52b2f88e9088b5fdbc7638816ae0d122bb015f5

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

Filesize
1KB

MD5
d3235ed022a42ec4338123ab87144afa

SHA1
5058608bc0deb720a585a2304a8f7cf63a50a315

SHA256
10663f5a1cb0afe5578f61ebaae2aafb363544e47b48521f9c23be9e6e431b27

SHA512
236761b7c68feca8bd62cba90cff0b25fac5613837aaa5d29ae823ace8b06a2057553cf7e72b11ccc59b6c289e471ca1bbac1a880aef5e2868875371a17c1abf

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

Filesize
1KB

MD5
6317adf4fbc43ea2fd68861fafd57155

SHA1
6b87c718893c83c6eed2767e8d9cbc6443e31913

SHA256
c1ead17eef37b4b461cedc276504a441489e819c7f943037f2001966aeec90af

SHA512
17229aae8622e4bfc3caaac55684f7d4ccd3162af5919c851b1d8ac4060b6bb7b75044ecee116523d05acb55197dcb60780958f629450edef386f1e6f65f49f0

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_l44mguhf.fgx.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1280-13-0x00007FFB5CC90000-0x00007FFB5D751000-memory.dmp

Filesize
10.8MB

Download
memory/1280-14-0x00007FFB5CC90000-0x00007FFB5D751000-memory.dmp

Filesize
10.8MB

Download
memory/1280-15-0x00007FFB5CC90000-0x00007FFB5D751000-memory.dmp

Filesize
10.8MB

Download
memory/1280-18-0x00007FFB5CC90000-0x00007FFB5D751000-memory.dmp

Filesize
10.8MB

Download
memory/1280-9-0x00000198D8370000-0x00000198D8392000-memory.dmp

Filesize
136KB

Download
memory/4952-34-0x00000256FD230000-0x00000256FD280000-memory.dmp

Filesize
320KB

Download
memory/4952-33-0x00000256FD4D0000-0x00000256FD546000-memory.dmp

Filesize
472KB

Download
memory/4952-35-0x00000256FD210000-0x00000256FD22E000-memory.dmp

Filesize
120KB

Download
memory/4952-1-0x00000256FAD80000-0x00000256FADC0000-memory.dmp

Filesize
256KB

Download
memory/4952-0-0x00007FFB5CC93000-0x00007FFB5CC95000-memory.dmp

Filesize
8KB

Download
memory/4952-71-0x00000256FD200000-0x00000256FD20A000-memory.dmp

Filesize
40KB

Download
memory/4952-72-0x00000256FD570000-0x00000256FD582000-memory.dmp

Filesize
72KB

Download
memory/4952-2-0x00007FFB5CC90000-0x00007FFB5D751000-memory.dmp

Filesize
10.8MB

Download
memory/4952-87-0x00007FFB5CC93000-0x00007FFB5CC95000-memory.dmp

Filesize
8KB

Download
memory/4952-88-0x00007FFB5CC90000-0x00007FFB5D751000-memory.dmp

Filesize
10.8MB

Download
memory/4952-92-0x00007FFB5CC90000-0x00007FFB5D751000-memory.dmp

Filesize
10.8MB

Download