umbral | 3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b

Analysis

max time kernel
96s
max time network
97s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
24-01-2025 23:14

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General

Target

3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe
Size

231KB
MD5

ff3be52f8463ba850787640f729bd887
SHA1

b4218156fce36677545852910612eab5630dc291
SHA256

3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b
SHA512

69cdbaea4662a68cd03ff9611dee9593ac7262930252a600bd9da44e8e3b46a41578630e6eb23223157c1f93e5a19c64b3beac0ed4006b0e68f5af753d5ee471
SSDEEP

6144:xloZMffsXtioRkts/cnnK6cMltMMjw2xpaBPyAxVkElb8e1mhzLHi2:DoZdtlRk83MltMMjw2xpaBPyAxVkAMW2

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/4912-1-0x000002185D450000-0x000002185D490000-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
3160	powershell.exe
792	powershell.exe
4484	powershell.exe
3284	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.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

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

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1668	wmic.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe
3284	powershell.exe
3284	powershell.exe
3160	powershell.exe
3160	powershell.exe
792	powershell.exe
792	powershell.exe
4920	powershell.exe
4920	powershell.exe
4484	powershell.exe
4484	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.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	3284	powershell.exe
Token: SeDebugPrivilege	3160	powershell.exe
Token: SeDebugPrivilege	792	powershell.exe
Token: SeDebugPrivilege	4920	powershell.exe
Token: SeIncreaseQuotaPrivilege	3196	wmic.exe
Token: SeSecurityPrivilege	3196	wmic.exe
Token: SeTakeOwnershipPrivilege	3196	wmic.exe
Token: SeLoadDriverPrivilege	3196	wmic.exe
Token: SeSystemProfilePrivilege	3196	wmic.exe
Token: SeSystemtimePrivilege	3196	wmic.exe
Token: SeProfSingleProcessPrivilege	3196	wmic.exe
Token: SeIncBasePriorityPrivilege	3196	wmic.exe
Token: SeCreatePagefilePrivilege	3196	wmic.exe
Token: SeBackupPrivilege	3196	wmic.exe
Token: SeRestorePrivilege	3196	wmic.exe
Token: SeShutdownPrivilege	3196	wmic.exe
Token: SeDebugPrivilege	3196	wmic.exe
Token: SeSystemEnvironmentPrivilege	3196	wmic.exe
Token: SeRemoteShutdownPrivilege	3196	wmic.exe
Token: SeUndockPrivilege	3196	wmic.exe
Token: SeManageVolumePrivilege	3196	wmic.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 4912 wrote to memory of 3280	4912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	83
PID 4912 wrote to memory of 3280	4912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	83
PID 4912 wrote to memory of 3284	4912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	86
PID 4912 wrote to memory of 3284	4912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	86
PID 4912 wrote to memory of 3160	4912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	88
PID 4912 wrote to memory of 3160	4912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	88
PID 4912 wrote to memory of 792	4912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	90
PID 4912 wrote to memory of 792	4912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	90
PID 4912 wrote to memory of 4920	4912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	92
PID 4912 wrote to memory of 4920	4912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	92
PID 4912 wrote to memory of 3196	4912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	94
PID 4912 wrote to memory of 3196	4912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	94
PID 4912 wrote to memory of 3336	4912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	96
PID 4912 wrote to memory of 3336	4912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	96
PID 4912 wrote to memory of 4944	4912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	98
PID 4912 wrote to memory of 4944	4912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	98
PID 4912 wrote to memory of 4484	4912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	100
PID 4912 wrote to memory of 4484	4912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	100
PID 4912 wrote to memory of 1668	4912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	102
PID 4912 wrote to memory of 1668	4912	3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe	102

C:\Users\Admin\AppData\Local\Temp\3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe
"C:\Users\Admin\AppData\Local\Temp\3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4912
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3280
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\3462387ca29f4536b4c7828ed6bc6ff8bc86fed3eef2ea6cc8650ff7d437b04b.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3284
- 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:3160
- 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:792
- 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:4920
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3196
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:3336
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4944
- 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:4484
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1668

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

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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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
cadef9abd087803c630df65264a6c81c

SHA1
babbf3636c347c8727c35f3eef2ee643dbcc4bd2

SHA256
cce65b73cdfe9304bcd5207913e8b60fb69faa20cd3b684f2b0343b755b99438

SHA512
7278aa87124abb382d9024a645e881e7b7cf1b84e8894943b36e018dbf0399e6858392f77980b599fa5488e2e21bf757a0702fe6419417edac93b68e0c2ec085

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
548dd08570d121a65e82abb7171cae1c

SHA1
1a1b5084b3a78f3acd0d811cc79dbcac121217ab

SHA256
cdf17b8532ebcebac3cfe23954a30aa32edd268d040da79c82687e4ccb044adc

SHA512
37b98b09178b51eec9599af90d027d2f1028202efc1633047e16e41f1a95610984af5620baac07db085ccfcb96942aafffad17aa1f44f63233e83869dc9f697b

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

Filesize
1KB

MD5
e7932a02d39494cbd15169818f18dd50

SHA1
8470aba7002124be936e54df0de6db8087f386a5

SHA256
b80af99efc0168f1e2ecff190e319e67c2e5d86fc2c056b37e887d8d28105b8f

SHA512
837f90e9bab1c58b4adafcde46fce554768c7b00f99618405b7b379e496c2df3c0ce7872ec163c7d16fb020a49b15333c86ede04a38bcde3d7854c56fbc76cf6

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_aiajyari.2yk.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3284-5-0x000001E8586E0000-0x000001E858702000-memory.dmp

Filesize
136KB

Download
memory/3284-14-0x00007FFE012B0000-0x00007FFE01D71000-memory.dmp

Filesize
10.8MB

Download
memory/3284-15-0x00007FFE012B0000-0x00007FFE01D71000-memory.dmp

Filesize
10.8MB

Download
memory/3284-18-0x00007FFE012B0000-0x00007FFE01D71000-memory.dmp

Filesize
10.8MB

Download
memory/3284-6-0x00007FFE012B0000-0x00007FFE01D71000-memory.dmp

Filesize
10.8MB

Download
memory/4912-33-0x00000218778E0000-0x0000021877930000-memory.dmp

Filesize
320KB

Download
memory/4912-32-0x0000021877B90000-0x0000021877C06000-memory.dmp

Filesize
472KB

Download
memory/4912-34-0x0000021877CB0000-0x0000021877CCE000-memory.dmp

Filesize
120KB

Download
memory/4912-1-0x000002185D450000-0x000002185D490000-memory.dmp

Filesize
256KB

Download
memory/4912-0-0x00007FFE012B3000-0x00007FFE012B5000-memory.dmp

Filesize
8KB

Download
memory/4912-71-0x0000021877C10000-0x0000021877C1A000-memory.dmp

Filesize
40KB

Download
memory/4912-72-0x0000021877C40000-0x0000021877C52000-memory.dmp

Filesize
72KB

Download
memory/4912-2-0x00007FFE012B0000-0x00007FFE01D71000-memory.dmp

Filesize
10.8MB

Download
memory/4912-92-0x00007FFE012B0000-0x00007FFE01D71000-memory.dmp

Filesize
10.8MB

Download