umbral | cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16

Analysis

max time kernel
149s
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 04:49

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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/3412-1-0x0000016FDB740000-0x0000016FDB7C2000-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
2384	powershell.exe
3156	powershell.exe
1512	powershell.exe
4616	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
3496	PING.EXE
64	cmd.exe

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
5048	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3496	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
3412	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe
2384	powershell.exe
2384	powershell.exe
3156	powershell.exe
3156	powershell.exe
1512	powershell.exe
1512	powershell.exe
4268	powershell.exe
4268	powershell.exe
4616	powershell.exe
4616	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3412	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe
Token: SeIncreaseQuotaPrivilege	2360	wmic.exe
Token: SeSecurityPrivilege	2360	wmic.exe
Token: SeTakeOwnershipPrivilege	2360	wmic.exe
Token: SeLoadDriverPrivilege	2360	wmic.exe
Token: SeSystemProfilePrivilege	2360	wmic.exe
Token: SeSystemtimePrivilege	2360	wmic.exe
Token: SeProfSingleProcessPrivilege	2360	wmic.exe
Token: SeIncBasePriorityPrivilege	2360	wmic.exe
Token: SeCreatePagefilePrivilege	2360	wmic.exe
Token: SeBackupPrivilege	2360	wmic.exe
Token: SeRestorePrivilege	2360	wmic.exe
Token: SeShutdownPrivilege	2360	wmic.exe
Token: SeDebugPrivilege	2360	wmic.exe
Token: SeSystemEnvironmentPrivilege	2360	wmic.exe
Token: SeRemoteShutdownPrivilege	2360	wmic.exe
Token: SeUndockPrivilege	2360	wmic.exe
Token: SeManageVolumePrivilege	2360	wmic.exe
Token: 33	2360	wmic.exe
Token: 34	2360	wmic.exe
Token: 35	2360	wmic.exe
Token: 36	2360	wmic.exe
Token: SeIncreaseQuotaPrivilege	2360	wmic.exe
Token: SeSecurityPrivilege	2360	wmic.exe
Token: SeTakeOwnershipPrivilege	2360	wmic.exe
Token: SeLoadDriverPrivilege	2360	wmic.exe
Token: SeSystemProfilePrivilege	2360	wmic.exe
Token: SeSystemtimePrivilege	2360	wmic.exe
Token: SeProfSingleProcessPrivilege	2360	wmic.exe
Token: SeIncBasePriorityPrivilege	2360	wmic.exe
Token: SeCreatePagefilePrivilege	2360	wmic.exe
Token: SeBackupPrivilege	2360	wmic.exe
Token: SeRestorePrivilege	2360	wmic.exe
Token: SeShutdownPrivilege	2360	wmic.exe
Token: SeDebugPrivilege	2360	wmic.exe
Token: SeSystemEnvironmentPrivilege	2360	wmic.exe
Token: SeRemoteShutdownPrivilege	2360	wmic.exe
Token: SeUndockPrivilege	2360	wmic.exe
Token: SeManageVolumePrivilege	2360	wmic.exe
Token: 33	2360	wmic.exe
Token: 34	2360	wmic.exe
Token: 35	2360	wmic.exe
Token: 36	2360	wmic.exe
Token: SeDebugPrivilege	2384	powershell.exe
Token: SeDebugPrivilege	3156	powershell.exe
Token: SeDebugPrivilege	1512	powershell.exe
Token: SeDebugPrivilege	4268	powershell.exe
Token: SeIncreaseQuotaPrivilege	2776	wmic.exe
Token: SeSecurityPrivilege	2776	wmic.exe
Token: SeTakeOwnershipPrivilege	2776	wmic.exe
Token: SeLoadDriverPrivilege	2776	wmic.exe
Token: SeSystemProfilePrivilege	2776	wmic.exe
Token: SeSystemtimePrivilege	2776	wmic.exe
Token: SeProfSingleProcessPrivilege	2776	wmic.exe
Token: SeIncBasePriorityPrivilege	2776	wmic.exe
Token: SeCreatePagefilePrivilege	2776	wmic.exe
Token: SeBackupPrivilege	2776	wmic.exe
Token: SeRestorePrivilege	2776	wmic.exe
Token: SeShutdownPrivilege	2776	wmic.exe
Token: SeDebugPrivilege	2776	wmic.exe
Token: SeSystemEnvironmentPrivilege	2776	wmic.exe
Token: SeRemoteShutdownPrivilege	2776	wmic.exe
Token: SeUndockPrivilege	2776	wmic.exe
Token: SeManageVolumePrivilege	2776	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3412 wrote to memory of 2360	3412	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	85
PID 3412 wrote to memory of 2360	3412	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	85
PID 3412 wrote to memory of 4788	3412	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	88
PID 3412 wrote to memory of 4788	3412	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	88
PID 3412 wrote to memory of 2384	3412	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	90
PID 3412 wrote to memory of 2384	3412	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	90
PID 3412 wrote to memory of 3156	3412	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	92
PID 3412 wrote to memory of 3156	3412	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	92
PID 3412 wrote to memory of 1512	3412	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	94
PID 3412 wrote to memory of 1512	3412	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	94
PID 3412 wrote to memory of 4268	3412	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	96
PID 3412 wrote to memory of 4268	3412	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	96
PID 3412 wrote to memory of 2776	3412	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	99
PID 3412 wrote to memory of 2776	3412	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	99
PID 3412 wrote to memory of 4420	3412	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	101
PID 3412 wrote to memory of 4420	3412	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	101
PID 3412 wrote to memory of 5016	3412	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	103
PID 3412 wrote to memory of 5016	3412	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	103
PID 3412 wrote to memory of 4616	3412	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	105
PID 3412 wrote to memory of 4616	3412	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	105
PID 3412 wrote to memory of 5048	3412	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	107
PID 3412 wrote to memory of 5048	3412	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	107
PID 3412 wrote to memory of 64	3412	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	109
PID 3412 wrote to memory of 64	3412	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	109
PID 64 wrote to memory of 3496	64	cmd.exe	111
PID 64 wrote to memory of 3496	64	cmd.exe	111

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4788	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:3412
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2360
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe"
  2⤵
  - Views/modifies file attributes
  PID:4788
- 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:2384
- 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:3156
- 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:1512
- 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:4268
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2776
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:4420
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:5016
- 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:4616
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:5048
- 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:64
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:3496

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
966914e2e771de7a4a57a95b6ecfa8a9

SHA1
7a32282fd51dd032967ed4d9a40cc57e265aeff2

SHA256
98d3c70d7004fa807897317bd6cd3e977b9b6c72d4d2565aca0f9f8b1c315cba

SHA512
dc39c7124a9c7c8d4c7e8e16290c46360b8d9a8f4e43edaacbbeb09bdcf20159a53db54d2b322372001b6a3de52b2f88e9088b5fdbc7638816ae0d122bb015f5

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
14096fbe470a190011f31dba4c4307ae

SHA1
83e2c46b3e1c14779d7aea8497ad802fbc89d01e

SHA256
8b66640600b8c05b4af2c978d3bdb778ddc2f835ea65297e6d9e9e060a256f39

SHA512
1687e378b3c0e92a30018f40092546c5cbfa38a5b5371d424834fd5c5cd02ebd52901f189385661e624a05e4ecb54f12841f970afae6e92a53da9551d95a3f75

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xfewdlqe.y1f.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2384-12-0x000001B0FF8B0000-0x000001B0FF8D2000-memory.dmp

Filesize
136KB

Download
memory/2384-13-0x00007FFE174C0000-0x00007FFE17F81000-memory.dmp

Filesize
10.8MB

Download
memory/2384-14-0x00007FFE174C0000-0x00007FFE17F81000-memory.dmp

Filesize
10.8MB

Download
memory/2384-15-0x00007FFE174C0000-0x00007FFE17F81000-memory.dmp

Filesize
10.8MB

Download
memory/2384-18-0x000001B0FFB90000-0x000001B0FFCFA000-memory.dmp

Filesize
1.4MB

Download
memory/2384-19-0x00007FFE174C0000-0x00007FFE17F81000-memory.dmp

Filesize
10.8MB

Download
memory/3412-34-0x0000016FF5F30000-0x0000016FF5FA6000-memory.dmp

Filesize
472KB

Download
memory/3412-35-0x0000016FF5C50000-0x0000016FF5CA0000-memory.dmp

Filesize
320KB

Download
memory/3412-36-0x0000016FF5CC0000-0x0000016FF5CDE000-memory.dmp

Filesize
120KB

Download
memory/3412-0-0x00007FFE174C3000-0x00007FFE174C5000-memory.dmp

Filesize
8KB

Download
memory/3412-2-0x00007FFE174C0000-0x00007FFE17F81000-memory.dmp

Filesize
10.8MB

Download
memory/3412-74-0x0000016FF5C10000-0x0000016FF5C1A000-memory.dmp

Filesize
40KB

Download
memory/3412-75-0x0000016FF5CA0000-0x0000016FF5CB2000-memory.dmp

Filesize
72KB

Download
memory/3412-1-0x0000016FDB740000-0x0000016FDB7C2000-memory.dmp

Filesize
520KB

Download
memory/3412-91-0x00007FFE174C3000-0x00007FFE174C5000-memory.dmp

Filesize
8KB

Download
memory/3412-92-0x00007FFE174C0000-0x00007FFE17F81000-memory.dmp

Filesize
10.8MB

Download
memory/3412-97-0x00007FFE174C0000-0x00007FFE17F81000-memory.dmp

Filesize
10.8MB

Download
memory/4268-71-0x000002427A470000-0x000002427A68C000-memory.dmp

Filesize
2.1MB

Download