umbral | f99bfa12c4d77132272330c8d2b2bcc2c928a24fa82d867c5c2025e1c2dea214

Analysis

max time kernel
49s
max time network
52s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
15-01-2025 15:58

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Umbral.exe
Size

235KB
MD5

c4629d5b68b6564d03651b30e7a421b2
SHA1

24d0ba44fc82a268cd5bdc3e39cd0ff4d96f506d
SHA256

2a45fd4f683e43f40f69ad4b5fdd49fc7c7ab38ad5b9fb2243903889d2ef13a2
SHA512

4f2e0dc33c9896e181cb30554983c358d7d0a36d7e33282c902d7d92cd3a19676301776b81a3f03c0431d3fc825b6d9cb9cb884ef4c499014079d91302718715
SSDEEP

6144:LloZM+rIkd8g+EtXHkv/iD4LiDnwf1DA0r9SjVg8ZJHELb8e1mNZi:JoZtL+EP8L0nwf1DA0r9SjVg8ZJHul

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/532-1-0x0000013E872A0000-0x0000013E872E0000-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

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
32	powershell.exe
4512	powershell.exe
412	powershell.exe
2244	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
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
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
1764	PING.EXE
1540	cmd.exe

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
396	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1764	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
532	Umbral.exe
32	powershell.exe
32	powershell.exe
412	powershell.exe
412	powershell.exe
2244	powershell.exe
2244	powershell.exe
4828	powershell.exe
4828	powershell.exe
4512	powershell.exe
4512	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	532	Umbral.exe
Token: SeIncreaseQuotaPrivilege	2480	wmic.exe
Token: SeSecurityPrivilege	2480	wmic.exe
Token: SeTakeOwnershipPrivilege	2480	wmic.exe
Token: SeLoadDriverPrivilege	2480	wmic.exe
Token: SeSystemProfilePrivilege	2480	wmic.exe
Token: SeSystemtimePrivilege	2480	wmic.exe
Token: SeProfSingleProcessPrivilege	2480	wmic.exe
Token: SeIncBasePriorityPrivilege	2480	wmic.exe
Token: SeCreatePagefilePrivilege	2480	wmic.exe
Token: SeBackupPrivilege	2480	wmic.exe
Token: SeRestorePrivilege	2480	wmic.exe
Token: SeShutdownPrivilege	2480	wmic.exe
Token: SeDebugPrivilege	2480	wmic.exe
Token: SeSystemEnvironmentPrivilege	2480	wmic.exe
Token: SeRemoteShutdownPrivilege	2480	wmic.exe
Token: SeUndockPrivilege	2480	wmic.exe
Token: SeManageVolumePrivilege	2480	wmic.exe
Token: 33	2480	wmic.exe
Token: 34	2480	wmic.exe
Token: 35	2480	wmic.exe
Token: 36	2480	wmic.exe
Token: SeIncreaseQuotaPrivilege	2480	wmic.exe
Token: SeSecurityPrivilege	2480	wmic.exe
Token: SeTakeOwnershipPrivilege	2480	wmic.exe
Token: SeLoadDriverPrivilege	2480	wmic.exe
Token: SeSystemProfilePrivilege	2480	wmic.exe
Token: SeSystemtimePrivilege	2480	wmic.exe
Token: SeProfSingleProcessPrivilege	2480	wmic.exe
Token: SeIncBasePriorityPrivilege	2480	wmic.exe
Token: SeCreatePagefilePrivilege	2480	wmic.exe
Token: SeBackupPrivilege	2480	wmic.exe
Token: SeRestorePrivilege	2480	wmic.exe
Token: SeShutdownPrivilege	2480	wmic.exe
Token: SeDebugPrivilege	2480	wmic.exe
Token: SeSystemEnvironmentPrivilege	2480	wmic.exe
Token: SeRemoteShutdownPrivilege	2480	wmic.exe
Token: SeUndockPrivilege	2480	wmic.exe
Token: SeManageVolumePrivilege	2480	wmic.exe
Token: 33	2480	wmic.exe
Token: 34	2480	wmic.exe
Token: 35	2480	wmic.exe
Token: 36	2480	wmic.exe
Token: SeDebugPrivilege	32	powershell.exe
Token: SeDebugPrivilege	412	powershell.exe
Token: SeDebugPrivilege	2244	powershell.exe
Token: SeDebugPrivilege	4828	powershell.exe
Token: SeIncreaseQuotaPrivilege	3264	wmic.exe
Token: SeSecurityPrivilege	3264	wmic.exe
Token: SeTakeOwnershipPrivilege	3264	wmic.exe
Token: SeLoadDriverPrivilege	3264	wmic.exe
Token: SeSystemProfilePrivilege	3264	wmic.exe
Token: SeSystemtimePrivilege	3264	wmic.exe
Token: SeProfSingleProcessPrivilege	3264	wmic.exe
Token: SeIncBasePriorityPrivilege	3264	wmic.exe
Token: SeCreatePagefilePrivilege	3264	wmic.exe
Token: SeBackupPrivilege	3264	wmic.exe
Token: SeRestorePrivilege	3264	wmic.exe
Token: SeShutdownPrivilege	3264	wmic.exe
Token: SeDebugPrivilege	3264	wmic.exe
Token: SeSystemEnvironmentPrivilege	3264	wmic.exe
Token: SeRemoteShutdownPrivilege	3264	wmic.exe
Token: SeUndockPrivilege	3264	wmic.exe
Token: SeManageVolumePrivilege	3264	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 532 wrote to memory of 2480	532	Umbral.exe	83
PID 532 wrote to memory of 2480	532	Umbral.exe	83
PID 532 wrote to memory of 1804	532	Umbral.exe	86
PID 532 wrote to memory of 1804	532	Umbral.exe	86
PID 532 wrote to memory of 32	532	Umbral.exe	88
PID 532 wrote to memory of 32	532	Umbral.exe	88
PID 532 wrote to memory of 412	532	Umbral.exe	90
PID 532 wrote to memory of 412	532	Umbral.exe	90
PID 532 wrote to memory of 2244	532	Umbral.exe	92
PID 532 wrote to memory of 2244	532	Umbral.exe	92
PID 532 wrote to memory of 4828	532	Umbral.exe	94
PID 532 wrote to memory of 4828	532	Umbral.exe	94
PID 532 wrote to memory of 3264	532	Umbral.exe	96
PID 532 wrote to memory of 3264	532	Umbral.exe	96
PID 532 wrote to memory of 4932	532	Umbral.exe	98
PID 532 wrote to memory of 4932	532	Umbral.exe	98
PID 532 wrote to memory of 832	532	Umbral.exe	100
PID 532 wrote to memory of 832	532	Umbral.exe	100
PID 532 wrote to memory of 4512	532	Umbral.exe	102
PID 532 wrote to memory of 4512	532	Umbral.exe	102
PID 532 wrote to memory of 396	532	Umbral.exe	104
PID 532 wrote to memory of 396	532	Umbral.exe	104
PID 532 wrote to memory of 1540	532	Umbral.exe	106
PID 532 wrote to memory of 1540	532	Umbral.exe	106
PID 1540 wrote to memory of 1764	1540	cmd.exe	108
PID 1540 wrote to memory of 1764	1540	cmd.exe	108

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1804	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:532
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2480
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
  2⤵
  - Views/modifies file attributes
  PID:1804
- 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:32
- 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:412
- 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:2244
- 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:4828
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3264
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:4932
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:832
- 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:4512
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:396
- 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:1540
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1764

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
d28a889fd956d5cb3accfbaf1143eb6f

SHA1
157ba54b365341f8ff06707d996b3635da8446f7

SHA256
21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

SHA512
0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

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

Filesize
948B

MD5
7e67deecc2baf03917099ca45a8b0e6b

SHA1
638d3c11b344fb0871e043ab868535c88fa36e70

SHA256
04cc57ed5d533e64851b549f118666aa4e666920203e9d87129c14a4a5ccd581

SHA512
b590cffa27017eff11d258259736b898e3ca4abcbf34b18c43cfdf486cc2ace7f0cf9bd20025e088a96c5f1112d2d3c5f55fa78252fc7240f99f623aabad4b9e

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
45ad40f012b09e141955482368549640

SHA1
3f9cd15875c1e397c3b2b5592805577ae88a96cb

SHA256
ea3b59172f1a33677f9cb3843fb4d6093b806d3a7cf2f3c6d4692f5421f656ce

SHA512
3de08f8affca1c1450088f560776cf3d65146cadac43c06eb922c7b3cea436e519966cf38458303ffeb1a58c53f8952cffda6c34216fda7594e014b516e83b33

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wmqc4wwu.ljo.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/32-13-0x00000194FD860000-0x00000194FD882000-memory.dmp

Filesize
136KB

Download
memory/32-14-0x00007FFAD9D80000-0x00007FFADA841000-memory.dmp

Filesize
10.8MB

Download
memory/32-15-0x00007FFAD9D80000-0x00007FFADA841000-memory.dmp

Filesize
10.8MB

Download
memory/32-18-0x00007FFAD9D80000-0x00007FFADA841000-memory.dmp

Filesize
10.8MB

Download
memory/32-3-0x00007FFAD9D80000-0x00007FFADA841000-memory.dmp

Filesize
10.8MB

Download
memory/532-34-0x0000013EA1A60000-0x0000013EA1AB0000-memory.dmp

Filesize
320KB

Download
memory/532-33-0x0000013EA19E0000-0x0000013EA1A56000-memory.dmp

Filesize
472KB

Download
memory/532-35-0x0000013EA19A0000-0x0000013EA19BE000-memory.dmp

Filesize
120KB

Download
memory/532-1-0x0000013E872A0000-0x0000013E872E0000-memory.dmp

Filesize
256KB

Download
memory/532-0-0x00007FFAD9D83000-0x00007FFAD9D85000-memory.dmp

Filesize
8KB

Download
memory/532-72-0x0000013EA19D0000-0x0000013EA19DA000-memory.dmp

Filesize
40KB

Download
memory/532-73-0x0000013EA1AD0000-0x0000013EA1AE2000-memory.dmp

Filesize
72KB

Download
memory/532-2-0x00007FFAD9D80000-0x00007FFADA841000-memory.dmp

Filesize
10.8MB

Download
memory/532-89-0x00007FFAD9D83000-0x00007FFAD9D85000-memory.dmp

Filesize
8KB

Download
memory/532-90-0x00007FFAD9D80000-0x00007FFADA841000-memory.dmp

Filesize
10.8MB

Download
memory/532-95-0x00007FFAD9D80000-0x00007FFADA841000-memory.dmp

Filesize
10.8MB

Download