umbral | 9c1f1a7105e258fc4b5df94ba02bd41ddbe55bc82c88cd718fa5b2fac5969f00

Analysis

max time kernel
13s
max time network
15s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241211-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241211-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
08/01/2025, 23:08

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General

Target

2.exe
Size

228KB
MD5

22c66a144f89f219d9f7bef81578dd48
SHA1

ad7235aadd9583fd423a5f36a5c65a6213d23fff
SHA256

9c1f1a7105e258fc4b5df94ba02bd41ddbe55bc82c88cd718fa5b2fac5969f00
SHA512

78316d05a92f3c4d9be0f18d1bbc86529961917d83cb00de36a396e96b2357564e354e9cfdc364f08d7e96bdd8602296e6df6eb0d2ea21029c7a45e116edb7a0
SSDEEP

6144:uloZMmrIkd8g+EtXHkv/iD4k5MTaL7j8e1myi:4oZ1L+EP8+LPW

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/396-1-0x000001F2C4CE0000-0x000001F2C4D20000-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
4800	powershell.exe
3620	powershell.exe
4864	powershell.exe
1872	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	2.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
22	discord.com
21	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

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4760	wmic.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
32	wmic.exe
32	wmic.exe
32	wmic.exe
32	wmic.exe
396	2.exe
4800	powershell.exe
4800	powershell.exe
4864	powershell.exe
4864	powershell.exe
1872	powershell.exe
1872	powershell.exe
752	powershell.exe
752	powershell.exe
2564	wmic.exe
2564	wmic.exe
2564	wmic.exe
2564	wmic.exe
3780	wmic.exe
3780	wmic.exe
3780	wmic.exe
3780	wmic.exe
3684	wmic.exe
3684	wmic.exe
3684	wmic.exe
3684	wmic.exe
3620	powershell.exe
3620	powershell.exe
4760	wmic.exe
4760	wmic.exe
4760	wmic.exe
4760	wmic.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	396	2.exe
Token: SeIncreaseQuotaPrivilege	32	wmic.exe
Token: SeSecurityPrivilege	32	wmic.exe
Token: SeTakeOwnershipPrivilege	32	wmic.exe
Token: SeLoadDriverPrivilege	32	wmic.exe
Token: SeSystemProfilePrivilege	32	wmic.exe
Token: SeSystemtimePrivilege	32	wmic.exe
Token: SeProfSingleProcessPrivilege	32	wmic.exe
Token: SeIncBasePriorityPrivilege	32	wmic.exe
Token: SeCreatePagefilePrivilege	32	wmic.exe
Token: SeBackupPrivilege	32	wmic.exe
Token: SeRestorePrivilege	32	wmic.exe
Token: SeShutdownPrivilege	32	wmic.exe
Token: SeDebugPrivilege	32	wmic.exe
Token: SeSystemEnvironmentPrivilege	32	wmic.exe
Token: SeRemoteShutdownPrivilege	32	wmic.exe
Token: SeUndockPrivilege	32	wmic.exe
Token: SeManageVolumePrivilege	32	wmic.exe
Token: 33	32	wmic.exe
Token: 34	32	wmic.exe
Token: 35	32	wmic.exe
Token: 36	32	wmic.exe
Token: SeIncreaseQuotaPrivilege	32	wmic.exe
Token: SeSecurityPrivilege	32	wmic.exe
Token: SeTakeOwnershipPrivilege	32	wmic.exe
Token: SeLoadDriverPrivilege	32	wmic.exe
Token: SeSystemProfilePrivilege	32	wmic.exe
Token: SeSystemtimePrivilege	32	wmic.exe
Token: SeProfSingleProcessPrivilege	32	wmic.exe
Token: SeIncBasePriorityPrivilege	32	wmic.exe
Token: SeCreatePagefilePrivilege	32	wmic.exe
Token: SeBackupPrivilege	32	wmic.exe
Token: SeRestorePrivilege	32	wmic.exe
Token: SeShutdownPrivilege	32	wmic.exe
Token: SeDebugPrivilege	32	wmic.exe
Token: SeSystemEnvironmentPrivilege	32	wmic.exe
Token: SeRemoteShutdownPrivilege	32	wmic.exe
Token: SeUndockPrivilege	32	wmic.exe
Token: SeManageVolumePrivilege	32	wmic.exe
Token: 33	32	wmic.exe
Token: 34	32	wmic.exe
Token: 35	32	wmic.exe
Token: 36	32	wmic.exe
Token: SeDebugPrivilege	4800	powershell.exe
Token: SeIncreaseQuotaPrivilege	4800	powershell.exe
Token: SeSecurityPrivilege	4800	powershell.exe
Token: SeTakeOwnershipPrivilege	4800	powershell.exe
Token: SeLoadDriverPrivilege	4800	powershell.exe
Token: SeSystemProfilePrivilege	4800	powershell.exe
Token: SeSystemtimePrivilege	4800	powershell.exe
Token: SeProfSingleProcessPrivilege	4800	powershell.exe
Token: SeIncBasePriorityPrivilege	4800	powershell.exe
Token: SeCreatePagefilePrivilege	4800	powershell.exe
Token: SeBackupPrivilege	4800	powershell.exe
Token: SeRestorePrivilege	4800	powershell.exe
Token: SeShutdownPrivilege	4800	powershell.exe
Token: SeDebugPrivilege	4800	powershell.exe
Token: SeSystemEnvironmentPrivilege	4800	powershell.exe
Token: SeRemoteShutdownPrivilege	4800	powershell.exe
Token: SeUndockPrivilege	4800	powershell.exe
Token: SeManageVolumePrivilege	4800	powershell.exe
Token: 33	4800	powershell.exe
Token: 34	4800	powershell.exe
Token: 35	4800	powershell.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 396 wrote to memory of 32	396	2.exe	82
PID 396 wrote to memory of 32	396	2.exe	82
PID 396 wrote to memory of 4800	396	2.exe	86
PID 396 wrote to memory of 4800	396	2.exe	86
PID 396 wrote to memory of 4864	396	2.exe	89
PID 396 wrote to memory of 4864	396	2.exe	89
PID 396 wrote to memory of 1872	396	2.exe	91
PID 396 wrote to memory of 1872	396	2.exe	91
PID 396 wrote to memory of 752	396	2.exe	93
PID 396 wrote to memory of 752	396	2.exe	93
PID 396 wrote to memory of 2564	396	2.exe	97
PID 396 wrote to memory of 2564	396	2.exe	97
PID 396 wrote to memory of 3780	396	2.exe	99
PID 396 wrote to memory of 3780	396	2.exe	99
PID 396 wrote to memory of 3684	396	2.exe	101
PID 396 wrote to memory of 3684	396	2.exe	101
PID 396 wrote to memory of 3620	396	2.exe	104
PID 396 wrote to memory of 3620	396	2.exe	104
PID 396 wrote to memory of 4760	396	2.exe	106
PID 396 wrote to memory of 4760	396	2.exe	106

C:\Users\Admin\AppData\Local\Temp\2.exe
"C:\Users\Admin\AppData\Local\Temp\2.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:396
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:32
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\2.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4800
- 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
  PID:4864
- 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
  PID:1872
- 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
  PID:752
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:2564
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:3780
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:3684
- 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:3620
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  - Suspicious behavior: EnumeratesProcesses
  PID:4760

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

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
3eb3833f769dd890afc295b977eab4b4

SHA1
e857649b037939602c72ad003e5d3698695f436f

SHA256
c485a6e2fd17c342fca60060f47d6a5655a65a412e35e001bb5bf88d96e6e485

SHA512
c24bbc8f278478d43756807b8c584d4e3fb2289db468bc92986a489f74a8da386a667a758360a397e77e018e363be8912ac260072fa3e31117ad0599ac749e72

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

Filesize
1KB

MD5
60b3262c3163ee3d466199160b9ed07d

SHA1
994ece4ea4e61de0be2fdd580f87e3415f9e1ff6

SHA256
e3b30f16d41f94cba2b8a75f35c91ae7418465abfbfe5477ec0551d1952b2fdb

SHA512
081d2015cb94477eb0fbc38f44b6d9b4a3204fb3ad0b7d0e146a88ab4ab9a0d475207f1adae03f4a81ccc5beb7568dc8be1249f69e32fe56efd9ee2f6ee3b1af

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

Filesize
948B

MD5
c14d98cc8b2f9eacc1a1b704a0007f5b

SHA1
29f742fddb1bb3354fe09be677627947ed852fec

SHA256
3e45b1d3376ee79767c98c41d9c6a5b8172aa1f4856ad94910af7dd15e016d9b

SHA512
f0c63aa31173b2c0dd4f5dec590acab558597ed93593115c0582e31cb1fbb5ee8cf042e7f147125dfa32e96f20f54762ec6a64fe811682033df2d38e38ee671e

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

Filesize
1KB

MD5
8e1fdd1b66d2fee9f6a052524d4ddca5

SHA1
0a9d0994559d1be2eecd8b0d6960540ca627bdb6

SHA256
4cc7c1b79d1b48582d4dc27ca8c31457b9bf2441deb7914399bb9e6863f18b13

SHA512
5a5494b878b08e8515811ab7a3d68780dac7423f5562477d98249a8bedf7ec98567b7cd5d4c6967d6bc63f2d6d9b7da9a65e0eb29d4b955026b469b5b598d1f3

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

Filesize
1KB

MD5
71942225419386ac509d153f679d4a68

SHA1
b2e1b1cba65e2a0b1b231a5a8b085e5b5294bbb3

SHA256
bc4f5ba67c4a53622f5618f2998a6c5c422daeea4a697f393d2a6667c4ab878b

SHA512
4195908338bee9870b0bbf29351b218a6e73da4d86073e148e128a0fa0269698ff1af0e1c4bc6b9ac3d2b2c4da23ead5acc6d0eb5c26a6095bf31b4491042912

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kybvjh4t.u2l.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/396-58-0x000001F2DF3C0000-0x000001F2DF3CA000-memory.dmp

Filesize
40KB

Download
memory/396-34-0x000001F2DF3A0000-0x000001F2DF3BE000-memory.dmp

Filesize
120KB

Download
memory/396-77-0x00007FF901900000-0x00007FF9023C2000-memory.dmp

Filesize
10.8MB

Download
memory/396-59-0x000001F2DF4D0000-0x000001F2DF4E2000-memory.dmp

Filesize
72KB

Download
memory/396-2-0x00007FF901900000-0x00007FF9023C2000-memory.dmp

Filesize
10.8MB

Download
memory/396-32-0x000001F2DF400000-0x000001F2DF476000-memory.dmp

Filesize
472KB

Download
memory/396-33-0x000001F2DF480000-0x000001F2DF4D0000-memory.dmp

Filesize
320KB

Download
memory/396-0-0x00007FF901903000-0x00007FF901905000-memory.dmp

Filesize
8KB

Download
memory/396-1-0x000001F2C4CE0000-0x000001F2C4D20000-memory.dmp

Filesize
256KB

Download
memory/4800-11-0x000002941DA40000-0x000002941DA62000-memory.dmp

Filesize
136KB

Download
memory/4800-4-0x00007FF901900000-0x00007FF9023C2000-memory.dmp

Filesize
10.8MB

Download
memory/4800-3-0x00007FF901900000-0x00007FF9023C2000-memory.dmp

Filesize
10.8MB

Download
memory/4800-5-0x00007FF901900000-0x00007FF9023C2000-memory.dmp

Filesize
10.8MB

Download
memory/4800-18-0x00007FF901900000-0x00007FF9023C2000-memory.dmp

Filesize
10.8MB

Download