umbral | 10a0c83bc6522b597850d3871616715533031cba948807d3831b5a239d5d7f9b

Analysis

max time kernel
121s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
30-11-2024 07:13

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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/1880-1-0x0000000000310000-0x00000000003B4000-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
2852	powershell.exe
2316	powershell.exe
2972	powershell.exe
2196	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	osintbeta.exe

Deletes itself 1 IoCs

pid	Process
2120	cmd.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
9	discord.com
10	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
2120	cmd.exe
1128	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
664	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1128	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1880	osintbeta.exe
2852	powershell.exe
2316	powershell.exe
2972	powershell.exe
344	powershell.exe
2196	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1880	osintbeta.exe
Token: SeIncreaseQuotaPrivilege	2356	wmic.exe
Token: SeSecurityPrivilege	2356	wmic.exe
Token: SeTakeOwnershipPrivilege	2356	wmic.exe
Token: SeLoadDriverPrivilege	2356	wmic.exe
Token: SeSystemProfilePrivilege	2356	wmic.exe
Token: SeSystemtimePrivilege	2356	wmic.exe
Token: SeProfSingleProcessPrivilege	2356	wmic.exe
Token: SeIncBasePriorityPrivilege	2356	wmic.exe
Token: SeCreatePagefilePrivilege	2356	wmic.exe
Token: SeBackupPrivilege	2356	wmic.exe
Token: SeRestorePrivilege	2356	wmic.exe
Token: SeShutdownPrivilege	2356	wmic.exe
Token: SeDebugPrivilege	2356	wmic.exe
Token: SeSystemEnvironmentPrivilege	2356	wmic.exe
Token: SeRemoteShutdownPrivilege	2356	wmic.exe
Token: SeUndockPrivilege	2356	wmic.exe
Token: SeManageVolumePrivilege	2356	wmic.exe
Token: 33	2356	wmic.exe
Token: 34	2356	wmic.exe
Token: 35	2356	wmic.exe
Token: SeIncreaseQuotaPrivilege	2356	wmic.exe
Token: SeSecurityPrivilege	2356	wmic.exe
Token: SeTakeOwnershipPrivilege	2356	wmic.exe
Token: SeLoadDriverPrivilege	2356	wmic.exe
Token: SeSystemProfilePrivilege	2356	wmic.exe
Token: SeSystemtimePrivilege	2356	wmic.exe
Token: SeProfSingleProcessPrivilege	2356	wmic.exe
Token: SeIncBasePriorityPrivilege	2356	wmic.exe
Token: SeCreatePagefilePrivilege	2356	wmic.exe
Token: SeBackupPrivilege	2356	wmic.exe
Token: SeRestorePrivilege	2356	wmic.exe
Token: SeShutdownPrivilege	2356	wmic.exe
Token: SeDebugPrivilege	2356	wmic.exe
Token: SeSystemEnvironmentPrivilege	2356	wmic.exe
Token: SeRemoteShutdownPrivilege	2356	wmic.exe
Token: SeUndockPrivilege	2356	wmic.exe
Token: SeManageVolumePrivilege	2356	wmic.exe
Token: 33	2356	wmic.exe
Token: 34	2356	wmic.exe
Token: 35	2356	wmic.exe
Token: SeDebugPrivilege	2852	powershell.exe
Token: SeDebugPrivilege	2316	powershell.exe
Token: SeDebugPrivilege	2972	powershell.exe
Token: SeDebugPrivilege	344	powershell.exe
Token: SeIncreaseQuotaPrivilege	492	wmic.exe
Token: SeSecurityPrivilege	492	wmic.exe
Token: SeTakeOwnershipPrivilege	492	wmic.exe
Token: SeLoadDriverPrivilege	492	wmic.exe
Token: SeSystemProfilePrivilege	492	wmic.exe
Token: SeSystemtimePrivilege	492	wmic.exe
Token: SeProfSingleProcessPrivilege	492	wmic.exe
Token: SeIncBasePriorityPrivilege	492	wmic.exe
Token: SeCreatePagefilePrivilege	492	wmic.exe
Token: SeBackupPrivilege	492	wmic.exe
Token: SeRestorePrivilege	492	wmic.exe
Token: SeShutdownPrivilege	492	wmic.exe
Token: SeDebugPrivilege	492	wmic.exe
Token: SeSystemEnvironmentPrivilege	492	wmic.exe
Token: SeRemoteShutdownPrivilege	492	wmic.exe
Token: SeUndockPrivilege	492	wmic.exe
Token: SeManageVolumePrivilege	492	wmic.exe
Token: 33	492	wmic.exe
Token: 34	492	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 1880 wrote to memory of 2356	1880	osintbeta.exe	31
PID 1880 wrote to memory of 2356	1880	osintbeta.exe	31
PID 1880 wrote to memory of 2356	1880	osintbeta.exe	31
PID 1880 wrote to memory of 2668	1880	osintbeta.exe	34
PID 1880 wrote to memory of 2668	1880	osintbeta.exe	34
PID 1880 wrote to memory of 2668	1880	osintbeta.exe	34
PID 1880 wrote to memory of 2852	1880	osintbeta.exe	36
PID 1880 wrote to memory of 2852	1880	osintbeta.exe	36
PID 1880 wrote to memory of 2852	1880	osintbeta.exe	36
PID 1880 wrote to memory of 2316	1880	osintbeta.exe	38
PID 1880 wrote to memory of 2316	1880	osintbeta.exe	38
PID 1880 wrote to memory of 2316	1880	osintbeta.exe	38
PID 1880 wrote to memory of 2972	1880	osintbeta.exe	40
PID 1880 wrote to memory of 2972	1880	osintbeta.exe	40
PID 1880 wrote to memory of 2972	1880	osintbeta.exe	40
PID 1880 wrote to memory of 344	1880	osintbeta.exe	42
PID 1880 wrote to memory of 344	1880	osintbeta.exe	42
PID 1880 wrote to memory of 344	1880	osintbeta.exe	42
PID 1880 wrote to memory of 492	1880	osintbeta.exe	44
PID 1880 wrote to memory of 492	1880	osintbeta.exe	44
PID 1880 wrote to memory of 492	1880	osintbeta.exe	44
PID 1880 wrote to memory of 1992	1880	osintbeta.exe	46
PID 1880 wrote to memory of 1992	1880	osintbeta.exe	46
PID 1880 wrote to memory of 1992	1880	osintbeta.exe	46
PID 1880 wrote to memory of 1956	1880	osintbeta.exe	48
PID 1880 wrote to memory of 1956	1880	osintbeta.exe	48
PID 1880 wrote to memory of 1956	1880	osintbeta.exe	48
PID 1880 wrote to memory of 2196	1880	osintbeta.exe	50
PID 1880 wrote to memory of 2196	1880	osintbeta.exe	50
PID 1880 wrote to memory of 2196	1880	osintbeta.exe	50
PID 1880 wrote to memory of 664	1880	osintbeta.exe	52
PID 1880 wrote to memory of 664	1880	osintbeta.exe	52
PID 1880 wrote to memory of 664	1880	osintbeta.exe	52
PID 1880 wrote to memory of 2120	1880	osintbeta.exe	54
PID 1880 wrote to memory of 2120	1880	osintbeta.exe	54
PID 1880 wrote to memory of 2120	1880	osintbeta.exe	54
PID 2120 wrote to memory of 1128	2120	cmd.exe	56
PID 2120 wrote to memory of 1128	2120	cmd.exe	56
PID 2120 wrote to memory of 1128	2120	cmd.exe	56

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2668	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:1880
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2356
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\osintbeta.exe"
  2⤵
  - Views/modifies file attributes
  PID:2668
- 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:2852
- 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:2316
- 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:2972
- 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:344
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:492
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1992
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1956
- 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:2196
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:664
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\osintbeta.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2120
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1128

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\Roaming\Microsoft\Windows\Recent\CustomDestinations\CKD82HM3794R7NURY2FS.temp

Filesize
7KB

MD5
1a1a9bbb971bca82c93f1e9ebd8fc522

SHA1
172215fc73fdbe365851d80b9e0f320d2df01dab

SHA256
0ab7d01c6c34522236431864d68053026931fdff568345fed0d06b1a9a67bf63

SHA512
7b16f2a7d54bf7c5436a4d5896f0db4b1586811733c005a8a425a14bd52336f0dc90a0f8fb1798fbbc8837ed1c72157c80efff0fb8c1a0bd6f8aa1beb34fcf5d

Download Submit
memory/1880-0-0x000007FEF55E3000-0x000007FEF55E4000-memory.dmp

Filesize
4KB

Download
memory/1880-1-0x0000000000310000-0x00000000003B4000-memory.dmp

Filesize
656KB

Download
memory/1880-2-0x000007FEF55E0000-0x000007FEF5FCC000-memory.dmp

Filesize
9.9MB

Download
memory/1880-48-0x000007FEF55E0000-0x000007FEF5FCC000-memory.dmp

Filesize
9.9MB

Download
memory/2196-44-0x0000000001D90000-0x0000000001D98000-memory.dmp

Filesize
32KB

Download
memory/2316-14-0x000000001B5E0000-0x000000001B8C2000-memory.dmp

Filesize
2.9MB

Download
memory/2316-15-0x0000000002790000-0x0000000002798000-memory.dmp

Filesize
32KB

Download
memory/2852-7-0x000000001B760000-0x000000001BA42000-memory.dmp

Filesize
2.9MB

Download
memory/2852-8-0x0000000001FC0000-0x0000000001FC8000-memory.dmp

Filesize
32KB

Download