umbral | 901ecaae92ecf398de0be871e6d1aa0de8598b46e9111b8f9db73320f3b0c051

Analysis

max time kernel
98s
max time network
112s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20250113-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250113-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
16-01-2025 22:41

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General

Target

Umbral.exe
Size

229KB
MD5

40aeff8340acaf040ca3c3bc883b8673
SHA1

6bee9df7f7d60f9a1b811cb7f10bac5d2c3b2c24
SHA256

901ecaae92ecf398de0be871e6d1aa0de8598b46e9111b8f9db73320f3b0c051
SHA512

83df0f03272dda85969f6928afd5c91da7a4b8d34f1a6ed7b7a88369480d1f0fb2549a7cbe8c80598cb3e300b2d703e6fa4cf598fee7aad15879d0a0213c964c
SSDEEP

6144:lloZM9rIkd8g+EtXHkv/iD4KHutxdt8e1mBuJi:noZOL+EP8CSxfc9

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2208-1-0x00000279B2AC0000-0x00000279B2B00000-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
3568	powershell.exe
856	powershell.exe
1164	powershell.exe
644	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
10	discord.com
11	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
2140	cmd.exe
4700	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1092	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4700	PING.EXE

Suspicious behavior: EnumeratesProcesses 26 IoCs

pid	Process
644	powershell.exe
644	powershell.exe
1164	powershell.exe
1164	powershell.exe
3568	powershell.exe
3568	powershell.exe
1912	powershell.exe
1912	powershell.exe
2256	wmic.exe
2256	wmic.exe
2256	wmic.exe
2256	wmic.exe
1124	wmic.exe
1124	wmic.exe
1124	wmic.exe
1124	wmic.exe
2716	wmic.exe
2716	wmic.exe
2716	wmic.exe
2716	wmic.exe
856	powershell.exe
856	powershell.exe
1092	wmic.exe
1092	wmic.exe
1092	wmic.exe
1092	wmic.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2208	Umbral.exe
Token: SeDebugPrivilege	644	powershell.exe
Token: SeIncreaseQuotaPrivilege	644	powershell.exe
Token: SeSecurityPrivilege	644	powershell.exe
Token: SeTakeOwnershipPrivilege	644	powershell.exe
Token: SeLoadDriverPrivilege	644	powershell.exe
Token: SeSystemProfilePrivilege	644	powershell.exe
Token: SeSystemtimePrivilege	644	powershell.exe
Token: SeProfSingleProcessPrivilege	644	powershell.exe
Token: SeIncBasePriorityPrivilege	644	powershell.exe
Token: SeCreatePagefilePrivilege	644	powershell.exe
Token: SeBackupPrivilege	644	powershell.exe
Token: SeRestorePrivilege	644	powershell.exe
Token: SeShutdownPrivilege	644	powershell.exe
Token: SeDebugPrivilege	644	powershell.exe
Token: SeSystemEnvironmentPrivilege	644	powershell.exe
Token: SeRemoteShutdownPrivilege	644	powershell.exe
Token: SeUndockPrivilege	644	powershell.exe
Token: SeManageVolumePrivilege	644	powershell.exe
Token: 33	644	powershell.exe
Token: 34	644	powershell.exe
Token: 35	644	powershell.exe
Token: 36	644	powershell.exe
Token: SeDebugPrivilege	1164	powershell.exe
Token: SeDebugPrivilege	3568	powershell.exe
Token: SeDebugPrivilege	1912	powershell.exe
Token: SeIncreaseQuotaPrivilege	2256	wmic.exe
Token: SeSecurityPrivilege	2256	wmic.exe
Token: SeTakeOwnershipPrivilege	2256	wmic.exe
Token: SeLoadDriverPrivilege	2256	wmic.exe
Token: SeSystemProfilePrivilege	2256	wmic.exe
Token: SeSystemtimePrivilege	2256	wmic.exe
Token: SeProfSingleProcessPrivilege	2256	wmic.exe
Token: SeIncBasePriorityPrivilege	2256	wmic.exe
Token: SeCreatePagefilePrivilege	2256	wmic.exe
Token: SeBackupPrivilege	2256	wmic.exe
Token: SeRestorePrivilege	2256	wmic.exe
Token: SeShutdownPrivilege	2256	wmic.exe
Token: SeDebugPrivilege	2256	wmic.exe
Token: SeSystemEnvironmentPrivilege	2256	wmic.exe
Token: SeRemoteShutdownPrivilege	2256	wmic.exe
Token: SeUndockPrivilege	2256	wmic.exe
Token: SeManageVolumePrivilege	2256	wmic.exe
Token: 33	2256	wmic.exe
Token: 34	2256	wmic.exe
Token: 35	2256	wmic.exe
Token: 36	2256	wmic.exe
Token: SeIncreaseQuotaPrivilege	2256	wmic.exe
Token: SeSecurityPrivilege	2256	wmic.exe
Token: SeTakeOwnershipPrivilege	2256	wmic.exe
Token: SeLoadDriverPrivilege	2256	wmic.exe
Token: SeSystemProfilePrivilege	2256	wmic.exe
Token: SeSystemtimePrivilege	2256	wmic.exe
Token: SeProfSingleProcessPrivilege	2256	wmic.exe
Token: SeIncBasePriorityPrivilege	2256	wmic.exe
Token: SeCreatePagefilePrivilege	2256	wmic.exe
Token: SeBackupPrivilege	2256	wmic.exe
Token: SeRestorePrivilege	2256	wmic.exe
Token: SeShutdownPrivilege	2256	wmic.exe
Token: SeDebugPrivilege	2256	wmic.exe
Token: SeSystemEnvironmentPrivilege	2256	wmic.exe
Token: SeRemoteShutdownPrivilege	2256	wmic.exe
Token: SeUndockPrivilege	2256	wmic.exe
Token: SeManageVolumePrivilege	2256	wmic.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2208 wrote to memory of 604	2208	Umbral.exe	82
PID 2208 wrote to memory of 604	2208	Umbral.exe	82
PID 2208 wrote to memory of 644	2208	Umbral.exe	84
PID 2208 wrote to memory of 644	2208	Umbral.exe	84
PID 2208 wrote to memory of 1164	2208	Umbral.exe	87
PID 2208 wrote to memory of 1164	2208	Umbral.exe	87
PID 2208 wrote to memory of 3568	2208	Umbral.exe	89
PID 2208 wrote to memory of 3568	2208	Umbral.exe	89
PID 2208 wrote to memory of 1912	2208	Umbral.exe	91
PID 2208 wrote to memory of 1912	2208	Umbral.exe	91
PID 2208 wrote to memory of 2256	2208	Umbral.exe	93
PID 2208 wrote to memory of 2256	2208	Umbral.exe	93
PID 2208 wrote to memory of 1124	2208	Umbral.exe	96
PID 2208 wrote to memory of 1124	2208	Umbral.exe	96
PID 2208 wrote to memory of 2716	2208	Umbral.exe	98
PID 2208 wrote to memory of 2716	2208	Umbral.exe	98
PID 2208 wrote to memory of 856	2208	Umbral.exe	100
PID 2208 wrote to memory of 856	2208	Umbral.exe	100
PID 2208 wrote to memory of 1092	2208	Umbral.exe	102
PID 2208 wrote to memory of 1092	2208	Umbral.exe	102
PID 2208 wrote to memory of 2140	2208	Umbral.exe	104
PID 2208 wrote to memory of 2140	2208	Umbral.exe	104
PID 2140 wrote to memory of 4700	2140	cmd.exe	106
PID 2140 wrote to memory of 4700	2140	cmd.exe	106

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
604	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 use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2208
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
  2⤵
  - Views/modifies file attributes
  PID:604
- 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:644
- 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:1164
- 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:3568
- 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:1912
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2256
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:1124
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:2716
- 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:856
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  - Suspicious behavior: EnumeratesProcesses
  PID:1092
- 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:2140
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4700

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
3KB

MD5
3eb3833f769dd890afc295b977eab4b4

SHA1
e857649b037939602c72ad003e5d3698695f436f

SHA256
c485a6e2fd17c342fca60060f47d6a5655a65a412e35e001bb5bf88d96e6e485

SHA512
c24bbc8f278478d43756807b8c584d4e3fb2289db468bc92986a489f74a8da386a667a758360a397e77e018e363be8912ac260072fa3e31117ad0599ac749e72

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

Filesize
1KB

MD5
60b3262c3163ee3d466199160b9ed07d

SHA1
994ece4ea4e61de0be2fdd580f87e3415f9e1ff6

SHA256
e3b30f16d41f94cba2b8a75f35c91ae7418465abfbfe5477ec0551d1952b2fdb

SHA512
081d2015cb94477eb0fbc38f44b6d9b4a3204fb3ad0b7d0e146a88ab4ab9a0d475207f1adae03f4a81ccc5beb7568dc8be1249f69e32fe56efd9ee2f6ee3b1af

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

Filesize
948B

MD5
a74301e8b65226466aac4a7aadd7677f

SHA1
4014db4e734578824a948fc3a0a7416bbefe7aa6

SHA256
34fba68e6222f4a5c28691dfc5a00020f3ecdc921714d40980f18809031de437

SHA512
bd737d18b788ec8836dd7184db18f58833e7e8a7913855dcde360330e2bbb037b19ec7dd7bace481bd95397c25d996f2042a05545b34ba6a01eea7be0f77f457

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

Filesize
1KB

MD5
8e1fdd1b66d2fee9f6a052524d4ddca5

SHA1
0a9d0994559d1be2eecd8b0d6960540ca627bdb6

SHA256
4cc7c1b79d1b48582d4dc27ca8c31457b9bf2441deb7914399bb9e6863f18b13

SHA512
5a5494b878b08e8515811ab7a3d68780dac7423f5562477d98249a8bedf7ec98567b7cd5d4c6967d6bc63f2d6d9b7da9a65e0eb29d4b955026b469b5b598d1f3

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

Filesize
1KB

MD5
5e85f1caa1bb7c62787c3858643625aa

SHA1
d8ecae1801d95abba130b970ffb844f4458c9ecd

SHA256
969ed3e32552fc4815c9f48fc7c22dcae24771e60389e6cc4ee76a8ab278ce74

SHA512
777a49b8f84485938848c4b68613ac97308adef287c93865e176a2846b0d0fc993ffc4d7a5201ea82bf3985b903fe6c7f8d393bf0e3028ca1c730548b3875223

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nthzbdh2.p1h.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/644-14-0x00007FF8073F0000-0x00007FF807EB2000-memory.dmp

Filesize
10.8MB

Download
memory/644-15-0x00007FF8073F0000-0x00007FF807EB2000-memory.dmp

Filesize
10.8MB

Download
memory/644-16-0x00007FF8073F0000-0x00007FF807EB2000-memory.dmp

Filesize
10.8MB

Download
memory/644-17-0x00007FF8073F0000-0x00007FF807EB2000-memory.dmp

Filesize
10.8MB

Download
memory/644-20-0x00007FF8073F0000-0x00007FF807EB2000-memory.dmp

Filesize
10.8MB

Download
memory/644-3-0x00007FF8073F0000-0x00007FF807EB2000-memory.dmp

Filesize
10.8MB

Download
memory/644-4-0x000001EEE01B0000-0x000001EEE01D2000-memory.dmp

Filesize
136KB

Download
memory/2208-36-0x00000279CD160000-0x00000279CD17E000-memory.dmp

Filesize
120KB

Download
memory/2208-35-0x00000279CD2D0000-0x00000279CD320000-memory.dmp

Filesize
320KB

Download
memory/2208-34-0x00000279CD1E0000-0x00000279CD256000-memory.dmp

Filesize
472KB

Download
memory/2208-0-0x00007FF8073F3000-0x00007FF8073F5000-memory.dmp

Filesize
8KB

Download
memory/2208-2-0x00007FF8073F0000-0x00007FF807EB2000-memory.dmp

Filesize
10.8MB

Download
memory/2208-60-0x00000279CD1A0000-0x00000279CD1AA000-memory.dmp

Filesize
40KB

Download
memory/2208-61-0x00000279CD260000-0x00000279CD272000-memory.dmp

Filesize
72KB

Download
memory/2208-1-0x00000279B2AC0000-0x00000279B2B00000-memory.dmp

Filesize
256KB

Download
memory/2208-75-0x00007FF8073F3000-0x00007FF8073F5000-memory.dmp

Filesize
8KB

Download
memory/2208-76-0x00007FF8073F0000-0x00007FF807EB2000-memory.dmp

Filesize
10.8MB

Download
memory/2208-81-0x00007FF8073F0000-0x00007FF807EB2000-memory.dmp

Filesize
10.8MB

Download