umbral | da9b33d28f4984317ffacf61df2b1b975e09babbec5c7ef8d0ec91ad3eb810f9

Analysis

max time kernel
95s
max time network
98s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
15/01/2025, 23:26

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General

Target

Rich Executor.exe
Size

285KB
MD5

16784b440d687c01015d992d63908bf8
SHA1

49f6cd11f32f093329e8fde5d710c3fbe41f3c7d
SHA256

da9b33d28f4984317ffacf61df2b1b975e09babbec5c7ef8d0ec91ad3eb810f9
SHA512

d29bda5ab0b4e62a263eb77a76081e705624f2a93c2d1f7730805df409777f3eaaea6673b65e45f3e63b0f3e56bc7938a861685e6b73452097e371022eff981f
SSDEEP

6144:6loZM+rIkd8g+EtXHkv/iD4xiNArRiK1XwBzOurfkb8e1m9izE2HV:EoZtL+EP8xiNArRiK1XwBzOurM79

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/936-1-0x000001689DBF0000-0x000001689DC3C000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Umbral family
umbral

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
3676	powershell.exe
3108	powershell.exe
4864	powershell.exe
4704	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
3	discord.com
6	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
3	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
4744	cmd.exe
2372	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1820	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2372	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
936	Rich Executor.exe
3676	powershell.exe
3676	powershell.exe
3108	powershell.exe
3108	powershell.exe
4864	powershell.exe
4864	powershell.exe
4480	powershell.exe
4480	powershell.exe
4704	powershell.exe
4704	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	936	Rich Executor.exe
Token: SeIncreaseQuotaPrivilege	2072	wmic.exe
Token: SeSecurityPrivilege	2072	wmic.exe
Token: SeTakeOwnershipPrivilege	2072	wmic.exe
Token: SeLoadDriverPrivilege	2072	wmic.exe
Token: SeSystemProfilePrivilege	2072	wmic.exe
Token: SeSystemtimePrivilege	2072	wmic.exe
Token: SeProfSingleProcessPrivilege	2072	wmic.exe
Token: SeIncBasePriorityPrivilege	2072	wmic.exe
Token: SeCreatePagefilePrivilege	2072	wmic.exe
Token: SeBackupPrivilege	2072	wmic.exe
Token: SeRestorePrivilege	2072	wmic.exe
Token: SeShutdownPrivilege	2072	wmic.exe
Token: SeDebugPrivilege	2072	wmic.exe
Token: SeSystemEnvironmentPrivilege	2072	wmic.exe
Token: SeRemoteShutdownPrivilege	2072	wmic.exe
Token: SeUndockPrivilege	2072	wmic.exe
Token: SeManageVolumePrivilege	2072	wmic.exe
Token: 33	2072	wmic.exe
Token: 34	2072	wmic.exe
Token: 35	2072	wmic.exe
Token: 36	2072	wmic.exe
Token: SeIncreaseQuotaPrivilege	2072	wmic.exe
Token: SeSecurityPrivilege	2072	wmic.exe
Token: SeTakeOwnershipPrivilege	2072	wmic.exe
Token: SeLoadDriverPrivilege	2072	wmic.exe
Token: SeSystemProfilePrivilege	2072	wmic.exe
Token: SeSystemtimePrivilege	2072	wmic.exe
Token: SeProfSingleProcessPrivilege	2072	wmic.exe
Token: SeIncBasePriorityPrivilege	2072	wmic.exe
Token: SeCreatePagefilePrivilege	2072	wmic.exe
Token: SeBackupPrivilege	2072	wmic.exe
Token: SeRestorePrivilege	2072	wmic.exe
Token: SeShutdownPrivilege	2072	wmic.exe
Token: SeDebugPrivilege	2072	wmic.exe
Token: SeSystemEnvironmentPrivilege	2072	wmic.exe
Token: SeRemoteShutdownPrivilege	2072	wmic.exe
Token: SeUndockPrivilege	2072	wmic.exe
Token: SeManageVolumePrivilege	2072	wmic.exe
Token: 33	2072	wmic.exe
Token: 34	2072	wmic.exe
Token: 35	2072	wmic.exe
Token: 36	2072	wmic.exe
Token: SeDebugPrivilege	3676	powershell.exe
Token: SeDebugPrivilege	3108	powershell.exe
Token: SeDebugPrivilege	4864	powershell.exe
Token: SeDebugPrivilege	4480	powershell.exe
Token: SeIncreaseQuotaPrivilege	1484	wmic.exe
Token: SeSecurityPrivilege	1484	wmic.exe
Token: SeTakeOwnershipPrivilege	1484	wmic.exe
Token: SeLoadDriverPrivilege	1484	wmic.exe
Token: SeSystemProfilePrivilege	1484	wmic.exe
Token: SeSystemtimePrivilege	1484	wmic.exe
Token: SeProfSingleProcessPrivilege	1484	wmic.exe
Token: SeIncBasePriorityPrivilege	1484	wmic.exe
Token: SeCreatePagefilePrivilege	1484	wmic.exe
Token: SeBackupPrivilege	1484	wmic.exe
Token: SeRestorePrivilege	1484	wmic.exe
Token: SeShutdownPrivilege	1484	wmic.exe
Token: SeDebugPrivilege	1484	wmic.exe
Token: SeSystemEnvironmentPrivilege	1484	wmic.exe
Token: SeRemoteShutdownPrivilege	1484	wmic.exe
Token: SeUndockPrivilege	1484	wmic.exe
Token: SeManageVolumePrivilege	1484	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 936 wrote to memory of 2072	936	Rich Executor.exe	77
PID 936 wrote to memory of 2072	936	Rich Executor.exe	77
PID 936 wrote to memory of 396	936	Rich Executor.exe	80
PID 936 wrote to memory of 396	936	Rich Executor.exe	80
PID 936 wrote to memory of 3676	936	Rich Executor.exe	82
PID 936 wrote to memory of 3676	936	Rich Executor.exe	82
PID 936 wrote to memory of 3108	936	Rich Executor.exe	84
PID 936 wrote to memory of 3108	936	Rich Executor.exe	84
PID 936 wrote to memory of 4864	936	Rich Executor.exe	86
PID 936 wrote to memory of 4864	936	Rich Executor.exe	86
PID 936 wrote to memory of 4480	936	Rich Executor.exe	88
PID 936 wrote to memory of 4480	936	Rich Executor.exe	88
PID 936 wrote to memory of 1484	936	Rich Executor.exe	90
PID 936 wrote to memory of 1484	936	Rich Executor.exe	90
PID 936 wrote to memory of 2860	936	Rich Executor.exe	92
PID 936 wrote to memory of 2860	936	Rich Executor.exe	92
PID 936 wrote to memory of 2960	936	Rich Executor.exe	94
PID 936 wrote to memory of 2960	936	Rich Executor.exe	94
PID 936 wrote to memory of 4704	936	Rich Executor.exe	96
PID 936 wrote to memory of 4704	936	Rich Executor.exe	96
PID 936 wrote to memory of 1820	936	Rich Executor.exe	98
PID 936 wrote to memory of 1820	936	Rich Executor.exe	98
PID 936 wrote to memory of 4744	936	Rich Executor.exe	100
PID 936 wrote to memory of 4744	936	Rich Executor.exe	100
PID 4744 wrote to memory of 2372	4744	cmd.exe	102
PID 4744 wrote to memory of 2372	4744	cmd.exe	102

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
396	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Rich Executor.exe
"C:\Users\Admin\AppData\Local\Temp\Rich Executor.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:936
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2072
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Rich Executor.exe"
  2⤵
  - Views/modifies file attributes
  PID:396
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Rich Executor.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3676
- 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:3108
- 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:4864
- 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:4480
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1484
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2860
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2960
- 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:4704
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1820
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Rich Executor.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4744
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2372

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
1a9fa92a4f2e2ec9e244d43a6a4f8fb9

SHA1
9910190edfaccece1dfcc1d92e357772f5dae8f7

SHA256
0ee052d5333fd5fd86bc84856fec98e045f077a7ac8051651bf7c521b9706888

SHA512
5d2361476fa22200e6f83883efe7dcb8c3fe7dae8d56e04e28a36e9ae1270c327b6aa161d92b239593da7661289d002c574446ecfd6bd19928209aae25e3ef64

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
7332074ae2b01262736b6fbd9e100dac

SHA1
22f992165065107cc9417fa4117240d84414a13c

SHA256
baea84fda6c1f13090b8cbd91c920848946f10ce155ef31a1df4cd453ee7e4aa

SHA512
4ae6f0e012c31ac1fc2ff4a8877ce2b4667c45b6e651de798318a39a2b6fd39a6f72dffa8b0b89b7a045a27d724d195656faa25a9fec79b22f37ddebb5d22da2

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

Filesize
1KB

MD5
40bbd950cc2444b68d2085ddaeaed585

SHA1
9f6aa2a1eb504b84fbb4e8b2c1061084a8ca93e5

SHA256
c469fef28d58921723749ebdff674c92fbe57f87228261711a3b8316a47cc605

SHA512
ab92a7b3ff80778e2dab9fb2c880351a585533032cbfa9880200289cba0ad70db8a50a2a04f229689d6c69113e8109c72496f144d557558db6fe3902426f988d

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_yd0urhfr.bcw.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/936-68-0x000001689E180000-0x000001689E18A000-memory.dmp

Filesize
40KB

Download
memory/936-33-0x00000168B83E0000-0x00000168B83FE000-memory.dmp

Filesize
120KB

Download
memory/936-88-0x00007FFF71D20000-0x00007FFF727E2000-memory.dmp

Filesize
10.8MB

Download
memory/936-69-0x00000168B8290000-0x00000168B82A2000-memory.dmp

Filesize
72KB

Download
memory/936-2-0x00007FFF71D20000-0x00007FFF727E2000-memory.dmp

Filesize
10.8MB

Download
memory/936-31-0x00000168B8460000-0x00000168B84D6000-memory.dmp

Filesize
472KB

Download
memory/936-32-0x00000168B84E0000-0x00000168B8530000-memory.dmp

Filesize
320KB

Download
memory/936-0-0x00007FFF71D23000-0x00007FFF71D25000-memory.dmp

Filesize
8KB

Download
memory/936-1-0x000001689DBF0000-0x000001689DC3C000-memory.dmp

Filesize
304KB

Download
memory/3676-14-0x00007FFF71D20000-0x00007FFF727E2000-memory.dmp

Filesize
10.8MB

Download
memory/3676-13-0x00007FFF71D20000-0x00007FFF727E2000-memory.dmp

Filesize
10.8MB

Download
memory/3676-3-0x00007FFF71D20000-0x00007FFF727E2000-memory.dmp

Filesize
10.8MB

Download
memory/3676-5-0x000001C11EDD0000-0x000001C11EDF2000-memory.dmp

Filesize
136KB

Download
memory/3676-17-0x00007FFF71D20000-0x00007FFF727E2000-memory.dmp

Filesize
10.8MB

Download