umbral | 721411866b84150806598c6f5fb21630a8ed056537c6fcb16a77c821dba8a3af

Analysis

max time kernel
189s
max time network
302s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
17-03-2024 19:25

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General

Target

Umbral.exe
Size

227KB
MD5

2f2e5193e34d583f15f52c8d525a48a0
SHA1

971fdcf967c2017fa201b3d486ed80bb18eddf4a
SHA256

721411866b84150806598c6f5fb21630a8ed056537c6fcb16a77c821dba8a3af
SHA512

f766b15ccf10638d5912d737e66eecb04186f551f051e7bf829e935d3f54a54561f4d4b28b9ebfa271c6ecbf0dc929a8c8799f1d641dcb9adb196c8992482498
SSDEEP

6144:sloZMCrIkd8g+EtXHkv/iD4XaqElGELns+d42X3WRfKb8e1m1i:qoZZL+EP8XaqElGELns+d42X3WROT

Score

10^/10

umbral spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/5020-0-0x00000217FFCC0000-0x00000217FFD00000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Reads user/profile data of web browsers 2 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

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

Web Service

T1102

flow	ioc
31	discord.com
32	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
19	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4256	wmic.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
3768	powershell.exe
3768	powershell.exe
1172	powershell.exe
1172	powershell.exe
1056	powershell.exe
1056	powershell.exe
1144	powershell.exe
1144	powershell.exe
4416	powershell.exe
4416	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	5020	Umbral.exe
Token: SeDebugPrivilege	3768	powershell.exe
Token: SeDebugPrivilege	1172	powershell.exe
Token: SeDebugPrivilege	1056	powershell.exe
Token: SeDebugPrivilege	1144	powershell.exe
Token: SeIncreaseQuotaPrivilege	1628	wmic.exe
Token: SeSecurityPrivilege	1628	wmic.exe
Token: SeTakeOwnershipPrivilege	1628	wmic.exe
Token: SeLoadDriverPrivilege	1628	wmic.exe
Token: SeSystemProfilePrivilege	1628	wmic.exe
Token: SeSystemtimePrivilege	1628	wmic.exe
Token: SeProfSingleProcessPrivilege	1628	wmic.exe
Token: SeIncBasePriorityPrivilege	1628	wmic.exe
Token: SeCreatePagefilePrivilege	1628	wmic.exe
Token: SeBackupPrivilege	1628	wmic.exe
Token: SeRestorePrivilege	1628	wmic.exe
Token: SeShutdownPrivilege	1628	wmic.exe
Token: SeDebugPrivilege	1628	wmic.exe
Token: SeSystemEnvironmentPrivilege	1628	wmic.exe
Token: SeRemoteShutdownPrivilege	1628	wmic.exe
Token: SeUndockPrivilege	1628	wmic.exe
Token: SeManageVolumePrivilege	1628	wmic.exe
Token: 33	1628	wmic.exe
Token: 34	1628	wmic.exe
Token: 35	1628	wmic.exe
Token: 36	1628	wmic.exe
Token: SeIncreaseQuotaPrivilege	1628	wmic.exe
Token: SeSecurityPrivilege	1628	wmic.exe
Token: SeTakeOwnershipPrivilege	1628	wmic.exe
Token: SeLoadDriverPrivilege	1628	wmic.exe
Token: SeSystemProfilePrivilege	1628	wmic.exe
Token: SeSystemtimePrivilege	1628	wmic.exe
Token: SeProfSingleProcessPrivilege	1628	wmic.exe
Token: SeIncBasePriorityPrivilege	1628	wmic.exe
Token: SeCreatePagefilePrivilege	1628	wmic.exe
Token: SeBackupPrivilege	1628	wmic.exe
Token: SeRestorePrivilege	1628	wmic.exe
Token: SeShutdownPrivilege	1628	wmic.exe
Token: SeDebugPrivilege	1628	wmic.exe
Token: SeSystemEnvironmentPrivilege	1628	wmic.exe
Token: SeRemoteShutdownPrivilege	1628	wmic.exe
Token: SeUndockPrivilege	1628	wmic.exe
Token: SeManageVolumePrivilege	1628	wmic.exe
Token: 33	1628	wmic.exe
Token: 34	1628	wmic.exe
Token: 35	1628	wmic.exe
Token: 36	1628	wmic.exe
Token: SeIncreaseQuotaPrivilege	2108	wmic.exe
Token: SeSecurityPrivilege	2108	wmic.exe
Token: SeTakeOwnershipPrivilege	2108	wmic.exe
Token: SeLoadDriverPrivilege	2108	wmic.exe
Token: SeSystemProfilePrivilege	2108	wmic.exe
Token: SeSystemtimePrivilege	2108	wmic.exe
Token: SeProfSingleProcessPrivilege	2108	wmic.exe
Token: SeIncBasePriorityPrivilege	2108	wmic.exe
Token: SeCreatePagefilePrivilege	2108	wmic.exe
Token: SeBackupPrivilege	2108	wmic.exe
Token: SeRestorePrivilege	2108	wmic.exe
Token: SeShutdownPrivilege	2108	wmic.exe
Token: SeDebugPrivilege	2108	wmic.exe
Token: SeSystemEnvironmentPrivilege	2108	wmic.exe
Token: SeRemoteShutdownPrivilege	2108	wmic.exe
Token: SeUndockPrivilege	2108	wmic.exe
Token: SeManageVolumePrivilege	2108	wmic.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 5020 wrote to memory of 3768	5020	Umbral.exe	90
PID 5020 wrote to memory of 3768	5020	Umbral.exe	90
PID 5020 wrote to memory of 1172	5020	Umbral.exe	93
PID 5020 wrote to memory of 1172	5020	Umbral.exe	93
PID 5020 wrote to memory of 1056	5020	Umbral.exe	97
PID 5020 wrote to memory of 1056	5020	Umbral.exe	97
PID 5020 wrote to memory of 1144	5020	Umbral.exe	99
PID 5020 wrote to memory of 1144	5020	Umbral.exe	99
PID 5020 wrote to memory of 1628	5020	Umbral.exe	101
PID 5020 wrote to memory of 1628	5020	Umbral.exe	101
PID 5020 wrote to memory of 2108	5020	Umbral.exe	104
PID 5020 wrote to memory of 2108	5020	Umbral.exe	104
PID 5020 wrote to memory of 2428	5020	Umbral.exe	106
PID 5020 wrote to memory of 2428	5020	Umbral.exe	106
PID 5020 wrote to memory of 4416	5020	Umbral.exe	108
PID 5020 wrote to memory of 4416	5020	Umbral.exe	108
PID 5020 wrote to memory of 4256	5020	Umbral.exe	110
PID 5020 wrote to memory of 4256	5020	Umbral.exe	110

C:\Users\Admin\AppData\Local\Temp\Umbral.exe
"C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5020
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Umbral.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3768
- 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⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1172
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1056
- 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:1144
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1628
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2108
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2428
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:4416
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4256

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

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
62623d22bd9e037191765d5083ce16a3

SHA1
4a07da6872672f715a4780513d95ed8ddeefd259

SHA256
95d79fd575bbd21540e378fcbc1cd00d16f51af62ce15bae7080bb72c24e2010

SHA512
9a448b7a0d867466c2ea04ab84d2a9485d5fd20ab53b2b854f491831ee3f1d781b94d2635f7b0b35cb9f2d373cd52c67570879a56a42ed66bc9db06962ed4992

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

Filesize
948B

MD5
1a58f982c18490e622e00d4eb75ace5a

SHA1
60c30527b74659ecf09089a5a7c02a1df9a71b65

SHA256
4b7f800c0dea209162cc86627983993127eb20e3f8616646c41cb3ce15d9b39d

SHA512
ddab516a967783c5951717853aa5b3ef6dd5b442db50092888b2e7f3179fc68120fcde69a08d6ab280740eaadb6eadfc758c3118b52706f869e48ac1aebda480

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

Filesize
1KB

MD5
548dd08570d121a65e82abb7171cae1c

SHA1
1a1b5084b3a78f3acd0d811cc79dbcac121217ab

SHA256
cdf17b8532ebcebac3cfe23954a30aa32edd268d040da79c82687e4ccb044adc

SHA512
37b98b09178b51eec9599af90d027d2f1028202efc1633047e16e41f1a95610984af5620baac07db085ccfcb96942aafffad17aa1f44f63233e83869dc9f697b

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_f2srlddh.s1a.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1056-39-0x0000012BB9DB0000-0x0000012BB9DC0000-memory.dmp

Filesize
64KB

Download
memory/1056-40-0x0000012BB9DB0000-0x0000012BB9DC0000-memory.dmp

Filesize
64KB

Download
memory/1056-38-0x00007FFAA6D00000-0x00007FFAA77C1000-memory.dmp

Filesize
10.8MB

Download
memory/1056-63-0x0000012BB9DB0000-0x0000012BB9DC0000-memory.dmp

Filesize
64KB

Download
memory/1056-65-0x00007FFAA6D00000-0x00007FFAA77C1000-memory.dmp

Filesize
10.8MB

Download
memory/1144-75-0x00007FFAA6D00000-0x00007FFAA77C1000-memory.dmp

Filesize
10.8MB

Download
memory/1144-82-0x00007FFAA6D00000-0x00007FFAA77C1000-memory.dmp

Filesize
10.8MB

Download
memory/1144-80-0x0000021E696C0000-0x0000021E696D0000-memory.dmp

Filesize
64KB

Download
memory/1144-76-0x0000021E696C0000-0x0000021E696D0000-memory.dmp

Filesize
64KB

Download
memory/1144-77-0x0000021E696C0000-0x0000021E696D0000-memory.dmp

Filesize
64KB

Download
memory/1172-20-0x00007FFAA6D00000-0x00007FFAA77C1000-memory.dmp

Filesize
10.8MB

Download
memory/1172-34-0x00007FFAA6D00000-0x00007FFAA77C1000-memory.dmp

Filesize
10.8MB

Download
memory/1172-22-0x0000017789B50000-0x0000017789B60000-memory.dmp

Filesize
64KB

Download
memory/1172-21-0x0000017789B50000-0x0000017789B60000-memory.dmp

Filesize
64KB

Download
memory/3768-12-0x000001BE960D0000-0x000001BE960F2000-memory.dmp

Filesize
136KB

Download
memory/3768-13-0x00007FFAA6D00000-0x00007FFAA77C1000-memory.dmp

Filesize
10.8MB

Download
memory/3768-18-0x00007FFAA6D00000-0x00007FFAA77C1000-memory.dmp

Filesize
10.8MB

Download
memory/3768-14-0x000001BEAE690000-0x000001BEAE6A0000-memory.dmp

Filesize
64KB

Download
memory/3768-15-0x000001BEAE690000-0x000001BEAE6A0000-memory.dmp

Filesize
64KB

Download
memory/4416-101-0x00007FFAA6D00000-0x00007FFAA77C1000-memory.dmp

Filesize
10.8MB

Download
memory/4416-98-0x00007FFAA6D00000-0x00007FFAA77C1000-memory.dmp

Filesize
10.8MB

Download
memory/5020-35-0x0000021800080000-0x00000218000F6000-memory.dmp

Filesize
472KB

Download
memory/5020-79-0x00007FFAA6D00000-0x00007FFAA77C1000-memory.dmp

Filesize
10.8MB

Download
memory/5020-2-0x00000217819D0000-0x00000217819E0000-memory.dmp

Filesize
64KB

Download
memory/5020-36-0x0000021800100000-0x0000021800150000-memory.dmp

Filesize
320KB

Download
memory/5020-85-0x0000021800040000-0x0000021800052000-memory.dmp

Filesize
72KB

Download
memory/5020-84-0x00000217FFFD0000-0x00000217FFFDA000-memory.dmp

Filesize
40KB

Download
memory/5020-1-0x00007FFAA6D00000-0x00007FFAA77C1000-memory.dmp

Filesize
10.8MB

Download
memory/5020-37-0x0000021800000000-0x000002180001E000-memory.dmp

Filesize
120KB

Download
memory/5020-99-0x00000217819D0000-0x00000217819E0000-memory.dmp

Filesize
64KB

Download
memory/5020-0-0x00000217FFCC0000-0x00000217FFD00000-memory.dmp

Filesize
256KB

Download
memory/5020-106-0x00007FFAA6D00000-0x00007FFAA77C1000-memory.dmp

Filesize
10.8MB

Download