umbral | 8ae1dd94ce9613b67ea8eb9e4ea1868824b8714bb1b184debd03048f668823dd

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
27-07-2024 12:57

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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/3736-1-0x0000023DFCD90000-0x0000023DFCDD0000-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
3420	powershell.exe
1764	powershell.exe
2328	powershell.exe
3240	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	xdark.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
30	discord.com
31	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
16	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
3300	cmd.exe
2364	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4892	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2364	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
3736	xdark.exe
3420	powershell.exe
3420	powershell.exe
2328	powershell.exe
2328	powershell.exe
3240	powershell.exe
3240	powershell.exe
3580	powershell.exe
3580	powershell.exe
1764	powershell.exe
1764	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3736	xdark.exe
Token: SeIncreaseQuotaPrivilege	4568	wmic.exe
Token: SeSecurityPrivilege	4568	wmic.exe
Token: SeTakeOwnershipPrivilege	4568	wmic.exe
Token: SeLoadDriverPrivilege	4568	wmic.exe
Token: SeSystemProfilePrivilege	4568	wmic.exe
Token: SeSystemtimePrivilege	4568	wmic.exe
Token: SeProfSingleProcessPrivilege	4568	wmic.exe
Token: SeIncBasePriorityPrivilege	4568	wmic.exe
Token: SeCreatePagefilePrivilege	4568	wmic.exe
Token: SeBackupPrivilege	4568	wmic.exe
Token: SeRestorePrivilege	4568	wmic.exe
Token: SeShutdownPrivilege	4568	wmic.exe
Token: SeDebugPrivilege	4568	wmic.exe
Token: SeSystemEnvironmentPrivilege	4568	wmic.exe
Token: SeRemoteShutdownPrivilege	4568	wmic.exe
Token: SeUndockPrivilege	4568	wmic.exe
Token: SeManageVolumePrivilege	4568	wmic.exe
Token: 33	4568	wmic.exe
Token: 34	4568	wmic.exe
Token: 35	4568	wmic.exe
Token: 36	4568	wmic.exe
Token: SeIncreaseQuotaPrivilege	4568	wmic.exe
Token: SeSecurityPrivilege	4568	wmic.exe
Token: SeTakeOwnershipPrivilege	4568	wmic.exe
Token: SeLoadDriverPrivilege	4568	wmic.exe
Token: SeSystemProfilePrivilege	4568	wmic.exe
Token: SeSystemtimePrivilege	4568	wmic.exe
Token: SeProfSingleProcessPrivilege	4568	wmic.exe
Token: SeIncBasePriorityPrivilege	4568	wmic.exe
Token: SeCreatePagefilePrivilege	4568	wmic.exe
Token: SeBackupPrivilege	4568	wmic.exe
Token: SeRestorePrivilege	4568	wmic.exe
Token: SeShutdownPrivilege	4568	wmic.exe
Token: SeDebugPrivilege	4568	wmic.exe
Token: SeSystemEnvironmentPrivilege	4568	wmic.exe
Token: SeRemoteShutdownPrivilege	4568	wmic.exe
Token: SeUndockPrivilege	4568	wmic.exe
Token: SeManageVolumePrivilege	4568	wmic.exe
Token: 33	4568	wmic.exe
Token: 34	4568	wmic.exe
Token: 35	4568	wmic.exe
Token: 36	4568	wmic.exe
Token: SeDebugPrivilege	3420	powershell.exe
Token: SeDebugPrivilege	2328	powershell.exe
Token: SeDebugPrivilege	3240	powershell.exe
Token: SeDebugPrivilege	3580	powershell.exe
Token: SeIncreaseQuotaPrivilege	5052	wmic.exe
Token: SeSecurityPrivilege	5052	wmic.exe
Token: SeTakeOwnershipPrivilege	5052	wmic.exe
Token: SeLoadDriverPrivilege	5052	wmic.exe
Token: SeSystemProfilePrivilege	5052	wmic.exe
Token: SeSystemtimePrivilege	5052	wmic.exe
Token: SeProfSingleProcessPrivilege	5052	wmic.exe
Token: SeIncBasePriorityPrivilege	5052	wmic.exe
Token: SeCreatePagefilePrivilege	5052	wmic.exe
Token: SeBackupPrivilege	5052	wmic.exe
Token: SeRestorePrivilege	5052	wmic.exe
Token: SeShutdownPrivilege	5052	wmic.exe
Token: SeDebugPrivilege	5052	wmic.exe
Token: SeSystemEnvironmentPrivilege	5052	wmic.exe
Token: SeRemoteShutdownPrivilege	5052	wmic.exe
Token: SeUndockPrivilege	5052	wmic.exe
Token: SeManageVolumePrivilege	5052	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3736 wrote to memory of 4568	3736	xdark.exe	87
PID 3736 wrote to memory of 4568	3736	xdark.exe	87
PID 3736 wrote to memory of 4004	3736	xdark.exe	90
PID 3736 wrote to memory of 4004	3736	xdark.exe	90
PID 3736 wrote to memory of 3420	3736	xdark.exe	115
PID 3736 wrote to memory of 3420	3736	xdark.exe	115
PID 3736 wrote to memory of 2328	3736	xdark.exe	94
PID 3736 wrote to memory of 2328	3736	xdark.exe	94
PID 3736 wrote to memory of 3240	3736	xdark.exe	98
PID 3736 wrote to memory of 3240	3736	xdark.exe	98
PID 3736 wrote to memory of 3580	3736	xdark.exe	101
PID 3736 wrote to memory of 3580	3736	xdark.exe	101
PID 3736 wrote to memory of 5052	3736	xdark.exe	103
PID 3736 wrote to memory of 5052	3736	xdark.exe	103
PID 3736 wrote to memory of 1272	3736	xdark.exe	106
PID 3736 wrote to memory of 1272	3736	xdark.exe	106
PID 3736 wrote to memory of 2392	3736	xdark.exe	108
PID 3736 wrote to memory of 2392	3736	xdark.exe	108
PID 3736 wrote to memory of 1764	3736	xdark.exe	110
PID 3736 wrote to memory of 1764	3736	xdark.exe	110
PID 3736 wrote to memory of 4892	3736	xdark.exe	112
PID 3736 wrote to memory of 4892	3736	xdark.exe	112
PID 3736 wrote to memory of 3300	3736	xdark.exe	114
PID 3736 wrote to memory of 3300	3736	xdark.exe	114
PID 3300 wrote to memory of 2364	3300	cmd.exe	117
PID 3300 wrote to memory of 2364	3300	cmd.exe	117

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4004	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:3736
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4568
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\xdark.exe"
  2⤵
  - Views/modifies file attributes
  PID:4004
- 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:3420
- 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:2328
- 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:3240
- 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:3580
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:5052
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1272
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2392
- 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:1764
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4892
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\xdark.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3300
- - C:\Windows\System32\Conhost.exe
    \??\C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
    3⤵
    PID:3420
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2364

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\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
35967cf5ed9a95ec4fe527dd96567a02

SHA1
6a7439c241a30ec540d5d204e02a4cbb2a464737

SHA256
4394552922777081d43fb523126cf176d5a676602a5435713320942034f6b3cf

SHA512
419b3c336a67ef964bc166d1267cea146ed5878f98304d6e39fb9a3c0394d75693810a9ddc101cdda5e3196ad7d603df01a3260705cf9ef7cf8d4b252df01f45

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
948B

MD5
df6c4e5c3091c14551e6c92f07717617

SHA1
1ea87111035496c1b2b74cef8b5c62d00ac072c9

SHA256
b79dc75372707ff84a643a9e4cff6fad2d1a936b54d458088850c62c96e2f231

SHA512
ab861efd0ff28a4bae3513a884d5b00c1b68d8f0bd54a00428bbb65a6954f8778e8f5300362025265251cb425c5ed77608b10776f382c3b392916ae46e38db35

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
57c9afc76e218af6740cddec86b8d154

SHA1
5284732e69315f90b9e9515180f1612a19dedaa5

SHA256
0be96f24ba9a643ea5e09901c8c9398d63c475f2c41e126563f1ca980338a48c

SHA512
7fc967fc456f93e5ad1752171256284afb53768ec2e5ec1c02c35175b7bf0586a0e9e0318a9779970abac3c0d55e2946840d3597c2f28db0ad22d123b8b1f0fe

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
21790bf15b6d99d56a2daf6176504a6f

SHA1
e63741e3638d27a78eb7907ae21e263b846c6e9c

SHA256
2d368d67f61bd2f6d27c7d0a40e913035b87f57ec4381e37c2f1e3541925c777

SHA512
1c3d96adb3e4a97bd0c6ca3a5a3153fe2bd8ef80ed558c9f418253ffc64c69a94a8e8a6544aab2d702ac3a13faa8087f48853b8a6fceb99dc0b1079e11bee148

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_24004r11.xie.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3420-4-0x00007FF896BD0000-0x00007FF897691000-memory.dmp

Filesize
10.8MB

Download
memory/3420-5-0x00007FF896BD0000-0x00007FF897691000-memory.dmp

Filesize
10.8MB

Download
memory/3420-15-0x000001DE1B7E0000-0x000001DE1B802000-memory.dmp

Filesize
136KB

Download
memory/3420-18-0x00007FF896BD0000-0x00007FF897691000-memory.dmp

Filesize
10.8MB

Download
memory/3420-3-0x00007FF896BD0000-0x00007FF897691000-memory.dmp

Filesize
10.8MB

Download
memory/3736-34-0x0000023DFF570000-0x0000023DFF5C0000-memory.dmp

Filesize
320KB

Download
memory/3736-33-0x0000023DFF4F0000-0x0000023DFF566000-memory.dmp

Filesize
472KB

Download
memory/3736-35-0x0000023DFF470000-0x0000023DFF48E000-memory.dmp

Filesize
120KB

Download
memory/3736-1-0x0000023DFCD90000-0x0000023DFCDD0000-memory.dmp

Filesize
256KB

Download
memory/3736-0-0x00007FF896BD3000-0x00007FF896BD5000-memory.dmp

Filesize
8KB

Download
memory/3736-71-0x0000023DFF350000-0x0000023DFF35A000-memory.dmp

Filesize
40KB

Download
memory/3736-72-0x0000023DFF4B0000-0x0000023DFF4C2000-memory.dmp

Filesize
72KB

Download
memory/3736-2-0x00007FF896BD0000-0x00007FF897691000-memory.dmp

Filesize
10.8MB

Download
memory/3736-90-0x00007FF896BD0000-0x00007FF897691000-memory.dmp

Filesize
10.8MB

Download