umbral | e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
01/12/2024, 03:07

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General

Target

e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe
Size

229KB
MD5

1e10af7811808fc24065f18535cf1220
SHA1

65995bcb862aa66988e1bb0dbff75dcac9b400c7
SHA256

e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed
SHA512

f1c623918a3701254805e7648d671b316446a0f98637d3de62d44331cf91502afb57ccb762472491bc4ac037fbf5f7b624eb9d39092b3be0b2ed84da6f3acadc
SSDEEP

6144:lloZMQfsXtioRkts/cnnK6cMldKRn/1+mpnsl3ySXCkb8e1muhi:noZItlRk83MldKRn/1+mpnsl3ySXze

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2988-1-0x0000000001120000-0x0000000001160000-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
1856	powershell.exe
2164	powershell.exe
2764	powershell.exe
2620	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe

Deletes itself 1 IoCs

pid	Process
2436	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

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
2436	cmd.exe
2448	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2872	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2448	PING.EXE

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1856	powershell.exe
2164	powershell.exe
2764	powershell.exe
2628	powershell.exe
2620	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe
Token: SeDebugPrivilege	1856	powershell.exe
Token: SeDebugPrivilege	2164	powershell.exe
Token: SeDebugPrivilege	2764	powershell.exe
Token: SeDebugPrivilege	2628	powershell.exe
Token: SeIncreaseQuotaPrivilege	1256	wmic.exe
Token: SeSecurityPrivilege	1256	wmic.exe
Token: SeTakeOwnershipPrivilege	1256	wmic.exe
Token: SeLoadDriverPrivilege	1256	wmic.exe
Token: SeSystemProfilePrivilege	1256	wmic.exe
Token: SeSystemtimePrivilege	1256	wmic.exe
Token: SeProfSingleProcessPrivilege	1256	wmic.exe
Token: SeIncBasePriorityPrivilege	1256	wmic.exe
Token: SeCreatePagefilePrivilege	1256	wmic.exe
Token: SeBackupPrivilege	1256	wmic.exe
Token: SeRestorePrivilege	1256	wmic.exe
Token: SeShutdownPrivilege	1256	wmic.exe
Token: SeDebugPrivilege	1256	wmic.exe
Token: SeSystemEnvironmentPrivilege	1256	wmic.exe
Token: SeRemoteShutdownPrivilege	1256	wmic.exe
Token: SeUndockPrivilege	1256	wmic.exe
Token: SeManageVolumePrivilege	1256	wmic.exe
Token: 33	1256	wmic.exe
Token: 34	1256	wmic.exe
Token: 35	1256	wmic.exe
Token: SeIncreaseQuotaPrivilege	1256	wmic.exe
Token: SeSecurityPrivilege	1256	wmic.exe
Token: SeTakeOwnershipPrivilege	1256	wmic.exe
Token: SeLoadDriverPrivilege	1256	wmic.exe
Token: SeSystemProfilePrivilege	1256	wmic.exe
Token: SeSystemtimePrivilege	1256	wmic.exe
Token: SeProfSingleProcessPrivilege	1256	wmic.exe
Token: SeIncBasePriorityPrivilege	1256	wmic.exe
Token: SeCreatePagefilePrivilege	1256	wmic.exe
Token: SeBackupPrivilege	1256	wmic.exe
Token: SeRestorePrivilege	1256	wmic.exe
Token: SeShutdownPrivilege	1256	wmic.exe
Token: SeDebugPrivilege	1256	wmic.exe
Token: SeSystemEnvironmentPrivilege	1256	wmic.exe
Token: SeRemoteShutdownPrivilege	1256	wmic.exe
Token: SeUndockPrivilege	1256	wmic.exe
Token: SeManageVolumePrivilege	1256	wmic.exe
Token: 33	1256	wmic.exe
Token: 34	1256	wmic.exe
Token: 35	1256	wmic.exe
Token: SeIncreaseQuotaPrivilege	2512	wmic.exe
Token: SeSecurityPrivilege	2512	wmic.exe
Token: SeTakeOwnershipPrivilege	2512	wmic.exe
Token: SeLoadDriverPrivilege	2512	wmic.exe
Token: SeSystemProfilePrivilege	2512	wmic.exe
Token: SeSystemtimePrivilege	2512	wmic.exe
Token: SeProfSingleProcessPrivilege	2512	wmic.exe
Token: SeIncBasePriorityPrivilege	2512	wmic.exe
Token: SeCreatePagefilePrivilege	2512	wmic.exe
Token: SeBackupPrivilege	2512	wmic.exe
Token: SeRestorePrivilege	2512	wmic.exe
Token: SeShutdownPrivilege	2512	wmic.exe
Token: SeDebugPrivilege	2512	wmic.exe
Token: SeSystemEnvironmentPrivilege	2512	wmic.exe
Token: SeRemoteShutdownPrivilege	2512	wmic.exe
Token: SeUndockPrivilege	2512	wmic.exe
Token: SeManageVolumePrivilege	2512	wmic.exe
Token: 33	2512	wmic.exe
Token: 34	2512	wmic.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2988 wrote to memory of 2484	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	30
PID 2988 wrote to memory of 2484	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	30
PID 2988 wrote to memory of 2484	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	30
PID 2988 wrote to memory of 1856	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	32
PID 2988 wrote to memory of 1856	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	32
PID 2988 wrote to memory of 1856	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	32
PID 2988 wrote to memory of 2164	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	35
PID 2988 wrote to memory of 2164	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	35
PID 2988 wrote to memory of 2164	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	35
PID 2988 wrote to memory of 2764	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	37
PID 2988 wrote to memory of 2764	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	37
PID 2988 wrote to memory of 2764	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	37
PID 2988 wrote to memory of 2628	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	39
PID 2988 wrote to memory of 2628	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	39
PID 2988 wrote to memory of 2628	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	39
PID 2988 wrote to memory of 1256	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	41
PID 2988 wrote to memory of 1256	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	41
PID 2988 wrote to memory of 1256	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	41
PID 2988 wrote to memory of 2512	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	44
PID 2988 wrote to memory of 2512	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	44
PID 2988 wrote to memory of 2512	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	44
PID 2988 wrote to memory of 1380	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	46
PID 2988 wrote to memory of 1380	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	46
PID 2988 wrote to memory of 1380	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	46
PID 2988 wrote to memory of 2620	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	48
PID 2988 wrote to memory of 2620	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	48
PID 2988 wrote to memory of 2620	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	48
PID 2988 wrote to memory of 2872	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	50
PID 2988 wrote to memory of 2872	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	50
PID 2988 wrote to memory of 2872	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	50
PID 2988 wrote to memory of 2436	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	52
PID 2988 wrote to memory of 2436	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	52
PID 2988 wrote to memory of 2436	2988	e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe	52
PID 2436 wrote to memory of 2448	2436	cmd.exe	54
PID 2436 wrote to memory of 2448	2436	cmd.exe	54
PID 2436 wrote to memory of 2448	2436	cmd.exe	54

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2484	attrib.exe

C:\Users\Admin\AppData\Local\Temp\e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe
"C:\Users\Admin\AppData\Local\Temp\e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2988
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe"
  2⤵
  - Views/modifies file attributes
  PID:2484
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1856
- 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:2164
- 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:2764
- 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:2628
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1256
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2512
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1380
- 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:2620
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2872
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\e07fd0ac793b06603be164c9ee73465af512cf17bed07614cbcd2a8410f04eed.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2436
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2448

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

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\783W9CP7PZX0ZP4HYBMO.temp

Filesize
7KB

MD5
a3081183a2311133bc6415c7cf792608

SHA1
bbc66bf91e08059f7f659ee05ac0ed7e8c45a9eb

SHA256
24ac04b7889fd62b2660181aa839590d4cf5cdb44b686e6407eb286dc79f2ebc

SHA512
a8c7fed2700482be6ce4c1af48b8088a2e204b9aa23294d06b131170c3bf70f7de6623fa6e4b52148e5407ade57f4fd4b47b69f391cc2eaf3f41d9dc7fed7964

Download Submit
memory/1856-8-0x000000001B740000-0x000000001BA22000-memory.dmp

Filesize
2.9MB

Download
memory/1856-13-0x000007FEEDC30000-0x000007FEEE5CD000-memory.dmp

Filesize
9.6MB

Download
memory/1856-15-0x000007FEEDC30000-0x000007FEEE5CD000-memory.dmp

Filesize
9.6MB

Download
memory/1856-9-0x0000000002A70000-0x0000000002A78000-memory.dmp

Filesize
32KB

Download
memory/1856-10-0x000007FEEDC30000-0x000007FEEE5CD000-memory.dmp

Filesize
9.6MB

Download
memory/1856-11-0x000007FEEDC30000-0x000007FEEE5CD000-memory.dmp

Filesize
9.6MB

Download
memory/1856-12-0x000007FEEDC30000-0x000007FEEE5CD000-memory.dmp

Filesize
9.6MB

Download
memory/1856-7-0x000007FEEDEEE000-0x000007FEEDEEF000-memory.dmp

Filesize
4KB

Download
memory/1856-14-0x000007FEEDC30000-0x000007FEEE5CD000-memory.dmp

Filesize
9.6MB

Download
memory/2164-21-0x000000001B5A0000-0x000000001B882000-memory.dmp

Filesize
2.9MB

Download
memory/2164-22-0x0000000001D20000-0x0000000001D28000-memory.dmp

Filesize
32KB

Download
memory/2620-50-0x0000000002080000-0x0000000002088000-memory.dmp

Filesize
32KB

Download
memory/2988-0-0x000007FEF57E3000-0x000007FEF57E4000-memory.dmp

Filesize
4KB

Download
memory/2988-2-0x000007FEF57E0000-0x000007FEF61CC000-memory.dmp

Filesize
9.9MB

Download
memory/2988-1-0x0000000001120000-0x0000000001160000-memory.dmp

Filesize
256KB

Download
memory/2988-54-0x000007FEF57E0000-0x000007FEF61CC000-memory.dmp

Filesize
9.9MB

Download