umbral | 6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
13/01/2025, 06:08

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General

Target

6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe
Size

257KB
MD5

c30f9465054f33e6dea1a2ba5cb206e7
SHA1

6c2609663a7aa38f738b0104785ab1ba469af013
SHA256

6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53
SHA512

181eee666cc26508697e50843ccf55e3c46dad0598b1f493d44f1c6dde8ca84df1d77eaecea0f289386a570d49e9aa2c6daa4b3f617659b092912a22adb6dc0d
SSDEEP

6144:floZM+rIkd8g+EtXHkv/iD4u76SecjfUx1gevPehab8e1mZRXLijK7so:doZtL+EP8u76SecjfUx1gevPeIqRWjKL

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2532-1-0x0000000000120000-0x0000000000166000-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
2824	powershell.exe
2884	powershell.exe
2600	powershell.exe
640	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe

Deletes itself 1 IoCs

pid	Process
2288	cmd.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
9	discord.com
10	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
6	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
2288	cmd.exe
2372	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2936	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2372	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe
2824	powershell.exe
2884	powershell.exe
2600	powershell.exe
1288	powershell.exe
640	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe
Token: SeIncreaseQuotaPrivilege	2324	wmic.exe
Token: SeSecurityPrivilege	2324	wmic.exe
Token: SeTakeOwnershipPrivilege	2324	wmic.exe
Token: SeLoadDriverPrivilege	2324	wmic.exe
Token: SeSystemProfilePrivilege	2324	wmic.exe
Token: SeSystemtimePrivilege	2324	wmic.exe
Token: SeProfSingleProcessPrivilege	2324	wmic.exe
Token: SeIncBasePriorityPrivilege	2324	wmic.exe
Token: SeCreatePagefilePrivilege	2324	wmic.exe
Token: SeBackupPrivilege	2324	wmic.exe
Token: SeRestorePrivilege	2324	wmic.exe
Token: SeShutdownPrivilege	2324	wmic.exe
Token: SeDebugPrivilege	2324	wmic.exe
Token: SeSystemEnvironmentPrivilege	2324	wmic.exe
Token: SeRemoteShutdownPrivilege	2324	wmic.exe
Token: SeUndockPrivilege	2324	wmic.exe
Token: SeManageVolumePrivilege	2324	wmic.exe
Token: 33	2324	wmic.exe
Token: 34	2324	wmic.exe
Token: 35	2324	wmic.exe
Token: SeIncreaseQuotaPrivilege	2324	wmic.exe
Token: SeSecurityPrivilege	2324	wmic.exe
Token: SeTakeOwnershipPrivilege	2324	wmic.exe
Token: SeLoadDriverPrivilege	2324	wmic.exe
Token: SeSystemProfilePrivilege	2324	wmic.exe
Token: SeSystemtimePrivilege	2324	wmic.exe
Token: SeProfSingleProcessPrivilege	2324	wmic.exe
Token: SeIncBasePriorityPrivilege	2324	wmic.exe
Token: SeCreatePagefilePrivilege	2324	wmic.exe
Token: SeBackupPrivilege	2324	wmic.exe
Token: SeRestorePrivilege	2324	wmic.exe
Token: SeShutdownPrivilege	2324	wmic.exe
Token: SeDebugPrivilege	2324	wmic.exe
Token: SeSystemEnvironmentPrivilege	2324	wmic.exe
Token: SeRemoteShutdownPrivilege	2324	wmic.exe
Token: SeUndockPrivilege	2324	wmic.exe
Token: SeManageVolumePrivilege	2324	wmic.exe
Token: 33	2324	wmic.exe
Token: 34	2324	wmic.exe
Token: 35	2324	wmic.exe
Token: SeDebugPrivilege	2824	powershell.exe
Token: SeDebugPrivilege	2884	powershell.exe
Token: SeDebugPrivilege	2600	powershell.exe
Token: SeDebugPrivilege	1288	powershell.exe
Token: SeIncreaseQuotaPrivilege	1684	wmic.exe
Token: SeSecurityPrivilege	1684	wmic.exe
Token: SeTakeOwnershipPrivilege	1684	wmic.exe
Token: SeLoadDriverPrivilege	1684	wmic.exe
Token: SeSystemProfilePrivilege	1684	wmic.exe
Token: SeSystemtimePrivilege	1684	wmic.exe
Token: SeProfSingleProcessPrivilege	1684	wmic.exe
Token: SeIncBasePriorityPrivilege	1684	wmic.exe
Token: SeCreatePagefilePrivilege	1684	wmic.exe
Token: SeBackupPrivilege	1684	wmic.exe
Token: SeRestorePrivilege	1684	wmic.exe
Token: SeShutdownPrivilege	1684	wmic.exe
Token: SeDebugPrivilege	1684	wmic.exe
Token: SeSystemEnvironmentPrivilege	1684	wmic.exe
Token: SeRemoteShutdownPrivilege	1684	wmic.exe
Token: SeUndockPrivilege	1684	wmic.exe
Token: SeManageVolumePrivilege	1684	wmic.exe
Token: 33	1684	wmic.exe
Token: 34	1684	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2532 wrote to memory of 2324	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	30
PID 2532 wrote to memory of 2324	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	30
PID 2532 wrote to memory of 2324	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	30
PID 2532 wrote to memory of 2756	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	33
PID 2532 wrote to memory of 2756	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	33
PID 2532 wrote to memory of 2756	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	33
PID 2532 wrote to memory of 2824	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	35
PID 2532 wrote to memory of 2824	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	35
PID 2532 wrote to memory of 2824	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	35
PID 2532 wrote to memory of 2884	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	37
PID 2532 wrote to memory of 2884	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	37
PID 2532 wrote to memory of 2884	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	37
PID 2532 wrote to memory of 2600	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	39
PID 2532 wrote to memory of 2600	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	39
PID 2532 wrote to memory of 2600	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	39
PID 2532 wrote to memory of 1288	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	41
PID 2532 wrote to memory of 1288	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	41
PID 2532 wrote to memory of 1288	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	41
PID 2532 wrote to memory of 1684	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	43
PID 2532 wrote to memory of 1684	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	43
PID 2532 wrote to memory of 1684	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	43
PID 2532 wrote to memory of 1756	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	45
PID 2532 wrote to memory of 1756	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	45
PID 2532 wrote to memory of 1756	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	45
PID 2532 wrote to memory of 1936	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	47
PID 2532 wrote to memory of 1936	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	47
PID 2532 wrote to memory of 1936	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	47
PID 2532 wrote to memory of 640	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	49
PID 2532 wrote to memory of 640	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	49
PID 2532 wrote to memory of 640	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	49
PID 2532 wrote to memory of 2936	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	51
PID 2532 wrote to memory of 2936	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	51
PID 2532 wrote to memory of 2936	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	51
PID 2532 wrote to memory of 2288	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	53
PID 2532 wrote to memory of 2288	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	53
PID 2532 wrote to memory of 2288	2532	6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe	53
PID 2288 wrote to memory of 2372	2288	cmd.exe	55
PID 2288 wrote to memory of 2372	2288	cmd.exe	55
PID 2288 wrote to memory of 2372	2288	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2756	attrib.exe

C:\Users\Admin\AppData\Local\Temp\6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe
"C:\Users\Admin\AppData\Local\Temp\6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2532
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2324
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe"
  2⤵
  - Views/modifies file attributes
  PID:2756
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2824
- 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:2884
- 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:2600
- 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:1288
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1684
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1756
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1936
- 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:640
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2936
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\6a856e121efd06bea72dbf93e24570e3c08e9859795e8234492254559f9aff53.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2288
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2372

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\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
45b76c15282bdb0032340b2d036a809b

SHA1
26a14d724fc58b744b1adbc9fade44aff0458bf0

SHA256
f1723882957cbe42b9efbbfdfb7bb3fa6ce546049261a0e436fca88dda11ef36

SHA512
2713c513bfb4884d564f702d424d523019c7957508a6051b3e652adc6e229f73c456cec75581c742c37f6eaa258ff9cad032e3a6f5c63f94646db965007392c8

Download Submit
memory/640-43-0x00000000027B0000-0x00000000027B8000-memory.dmp

Filesize
32KB

Download
memory/2532-0-0x000007FEF5313000-0x000007FEF5314000-memory.dmp

Filesize
4KB

Download
memory/2532-1-0x0000000000120000-0x0000000000166000-memory.dmp

Filesize
280KB

Download
memory/2532-2-0x000007FEF5310000-0x000007FEF5CFC000-memory.dmp

Filesize
9.9MB

Download
memory/2532-47-0x000007FEF5310000-0x000007FEF5CFC000-memory.dmp

Filesize
9.9MB

Download
memory/2824-7-0x000000001B6C0000-0x000000001B9A2000-memory.dmp

Filesize
2.9MB

Download
memory/2824-8-0x0000000001D90000-0x0000000001D98000-memory.dmp

Filesize
32KB

Download
memory/2884-14-0x000000001B7C0000-0x000000001BAA2000-memory.dmp

Filesize
2.9MB

Download
memory/2884-15-0x0000000002340000-0x0000000002348000-memory.dmp

Filesize
32KB

Download