umbral | 8ae1dd94ce9613b67ea8eb9e4ea1868824b8714bb1b184debd03048f668823dd

Analysis

max time kernel
117s
max time network
124s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
27-07-2024 15:58

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General

Target

xdark.exe
Size

229KB
MD5

4d3247cc8c41f20789fee08c48359cde
SHA1

409a5ccfec9dcc173d79c2f760a389439d024afc
SHA256

8ae1dd94ce9613b67ea8eb9e4ea1868824b8714bb1b184debd03048f668823dd
SHA512

65f6cf419a656840825923944cf737accc9f5591266694c94c1ac9477fef4f79a60e967ece7c878b853b63c99ce7662ce808ad58ea49a25b00b8b3cda9f8b22f
SSDEEP

6144:tloZM+rIkd8g+EtXHkv/iD4AO+VQ6YXzQKXap8aLLyuQb8e1mni:voZtL+EP8A3VQ6YXzQFp8aLLyXN

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2144-1-0x0000000000F60000-0x0000000000FA0000-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
2696	powershell.exe
2836	powershell.exe
2980	powershell.exe
2848	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Deletes itself 1 IoCs

pid	Process
544	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
544	cmd.exe
1040	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2788	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1040	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2144	xdark.exe
2696	powershell.exe
2836	powershell.exe
2980	powershell.exe
1264	powershell.exe
2848	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2144	xdark.exe
Token: SeIncreaseQuotaPrivilege	2884	wmic.exe
Token: SeSecurityPrivilege	2884	wmic.exe
Token: SeTakeOwnershipPrivilege	2884	wmic.exe
Token: SeLoadDriverPrivilege	2884	wmic.exe
Token: SeSystemProfilePrivilege	2884	wmic.exe
Token: SeSystemtimePrivilege	2884	wmic.exe
Token: SeProfSingleProcessPrivilege	2884	wmic.exe
Token: SeIncBasePriorityPrivilege	2884	wmic.exe
Token: SeCreatePagefilePrivilege	2884	wmic.exe
Token: SeBackupPrivilege	2884	wmic.exe
Token: SeRestorePrivilege	2884	wmic.exe
Token: SeShutdownPrivilege	2884	wmic.exe
Token: SeDebugPrivilege	2884	wmic.exe
Token: SeSystemEnvironmentPrivilege	2884	wmic.exe
Token: SeRemoteShutdownPrivilege	2884	wmic.exe
Token: SeUndockPrivilege	2884	wmic.exe
Token: SeManageVolumePrivilege	2884	wmic.exe
Token: 33	2884	wmic.exe
Token: 34	2884	wmic.exe
Token: 35	2884	wmic.exe
Token: SeIncreaseQuotaPrivilege	2884	wmic.exe
Token: SeSecurityPrivilege	2884	wmic.exe
Token: SeTakeOwnershipPrivilege	2884	wmic.exe
Token: SeLoadDriverPrivilege	2884	wmic.exe
Token: SeSystemProfilePrivilege	2884	wmic.exe
Token: SeSystemtimePrivilege	2884	wmic.exe
Token: SeProfSingleProcessPrivilege	2884	wmic.exe
Token: SeIncBasePriorityPrivilege	2884	wmic.exe
Token: SeCreatePagefilePrivilege	2884	wmic.exe
Token: SeBackupPrivilege	2884	wmic.exe
Token: SeRestorePrivilege	2884	wmic.exe
Token: SeShutdownPrivilege	2884	wmic.exe
Token: SeDebugPrivilege	2884	wmic.exe
Token: SeSystemEnvironmentPrivilege	2884	wmic.exe
Token: SeRemoteShutdownPrivilege	2884	wmic.exe
Token: SeUndockPrivilege	2884	wmic.exe
Token: SeManageVolumePrivilege	2884	wmic.exe
Token: 33	2884	wmic.exe
Token: 34	2884	wmic.exe
Token: 35	2884	wmic.exe
Token: SeDebugPrivilege	2696	powershell.exe
Token: SeDebugPrivilege	2836	powershell.exe
Token: SeDebugPrivilege	2980	powershell.exe
Token: SeDebugPrivilege	1264	powershell.exe
Token: SeIncreaseQuotaPrivilege	1372	wmic.exe
Token: SeSecurityPrivilege	1372	wmic.exe
Token: SeTakeOwnershipPrivilege	1372	wmic.exe
Token: SeLoadDriverPrivilege	1372	wmic.exe
Token: SeSystemProfilePrivilege	1372	wmic.exe
Token: SeSystemtimePrivilege	1372	wmic.exe
Token: SeProfSingleProcessPrivilege	1372	wmic.exe
Token: SeIncBasePriorityPrivilege	1372	wmic.exe
Token: SeCreatePagefilePrivilege	1372	wmic.exe
Token: SeBackupPrivilege	1372	wmic.exe
Token: SeRestorePrivilege	1372	wmic.exe
Token: SeShutdownPrivilege	1372	wmic.exe
Token: SeDebugPrivilege	1372	wmic.exe
Token: SeSystemEnvironmentPrivilege	1372	wmic.exe
Token: SeRemoteShutdownPrivilege	1372	wmic.exe
Token: SeUndockPrivilege	1372	wmic.exe
Token: SeManageVolumePrivilege	1372	wmic.exe
Token: 33	1372	wmic.exe
Token: 34	1372	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2144 wrote to memory of 2884	2144	xdark.exe	31
PID 2144 wrote to memory of 2884	2144	xdark.exe	31
PID 2144 wrote to memory of 2884	2144	xdark.exe	31
PID 2144 wrote to memory of 2776	2144	xdark.exe	34
PID 2144 wrote to memory of 2776	2144	xdark.exe	34
PID 2144 wrote to memory of 2776	2144	xdark.exe	34
PID 2144 wrote to memory of 2696	2144	xdark.exe	36
PID 2144 wrote to memory of 2696	2144	xdark.exe	36
PID 2144 wrote to memory of 2696	2144	xdark.exe	36
PID 2144 wrote to memory of 2836	2144	xdark.exe	38
PID 2144 wrote to memory of 2836	2144	xdark.exe	38
PID 2144 wrote to memory of 2836	2144	xdark.exe	38
PID 2144 wrote to memory of 2980	2144	xdark.exe	40
PID 2144 wrote to memory of 2980	2144	xdark.exe	40
PID 2144 wrote to memory of 2980	2144	xdark.exe	40
PID 2144 wrote to memory of 1264	2144	xdark.exe	42
PID 2144 wrote to memory of 1264	2144	xdark.exe	42
PID 2144 wrote to memory of 1264	2144	xdark.exe	42
PID 2144 wrote to memory of 1372	2144	xdark.exe	44
PID 2144 wrote to memory of 1372	2144	xdark.exe	44
PID 2144 wrote to memory of 1372	2144	xdark.exe	44
PID 2144 wrote to memory of 1636	2144	xdark.exe	46
PID 2144 wrote to memory of 1636	2144	xdark.exe	46
PID 2144 wrote to memory of 1636	2144	xdark.exe	46
PID 2144 wrote to memory of 1632	2144	xdark.exe	48
PID 2144 wrote to memory of 1632	2144	xdark.exe	48
PID 2144 wrote to memory of 1632	2144	xdark.exe	48
PID 2144 wrote to memory of 2848	2144	xdark.exe	50
PID 2144 wrote to memory of 2848	2144	xdark.exe	50
PID 2144 wrote to memory of 2848	2144	xdark.exe	50
PID 2144 wrote to memory of 2788	2144	xdark.exe	52
PID 2144 wrote to memory of 2788	2144	xdark.exe	52
PID 2144 wrote to memory of 2788	2144	xdark.exe	52
PID 2144 wrote to memory of 544	2144	xdark.exe	54
PID 2144 wrote to memory of 544	2144	xdark.exe	54
PID 2144 wrote to memory of 544	2144	xdark.exe	54
PID 544 wrote to memory of 1040	544	cmd.exe	56
PID 544 wrote to memory of 1040	544	cmd.exe	56
PID 544 wrote to memory of 1040	544	cmd.exe	56

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2776	attrib.exe

C:\Users\Admin\AppData\Local\Temp\xdark.exe
"C:\Users\Admin\AppData\Local\Temp\xdark.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2144
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2884
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\xdark.exe"
  2⤵
  - Views/modifies file attributes
  PID:2776
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\xdark.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2696
- 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:2836
- 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:2980
- 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:1264
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1372
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1636
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1632
- 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:2848
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2788
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\xdark.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:544
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1040

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
e7b21183fa3e75413bab87f98c4aafda

SHA1
a5a60c1c08136c778e7cc53acc8fc2d8d0a7b22b

SHA256
158d433579d3227b54c48f9d57eecdfa02fd5159ebf425430fe935a005bd558c

SHA512
b2cc439863a7bc523de5dca38f63722db8517a7ec2fb2649f17b3f983c81771f19bf6fd85fb11c9de6a11c5879cb37618fedfe5b66bcff84cdfafea923c1733f

Download Submit
memory/2144-0-0x000007FEF5923000-0x000007FEF5924000-memory.dmp

Filesize
4KB

Download
memory/2144-1-0x0000000000F60000-0x0000000000FA0000-memory.dmp

Filesize
256KB

Download
memory/2144-2-0x000007FEF5920000-0x000007FEF630C000-memory.dmp

Filesize
9.9MB

Download
memory/2144-47-0x000007FEF5920000-0x000007FEF630C000-memory.dmp

Filesize
9.9MB

Download
memory/2696-7-0x000000001B650000-0x000000001B932000-memory.dmp

Filesize
2.9MB

Download
memory/2696-8-0x0000000002240000-0x0000000002248000-memory.dmp

Filesize
32KB

Download
memory/2836-14-0x000000001B760000-0x000000001BA42000-memory.dmp

Filesize
2.9MB

Download
memory/2836-15-0x00000000003F0000-0x00000000003F8000-memory.dmp

Filesize
32KB

Download
memory/2848-43-0x0000000001E10000-0x0000000001E18000-memory.dmp

Filesize
32KB

Download