umbral | bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
09-08-2024 19:30

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General

Target

bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe
Size

229KB
MD5

67735e43b595bc948f427fbc1d4d9400
SHA1

df92217c3101826bf0ae4c8ba53e40026e64dcc3
SHA256

bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6
SHA512

492b3d5372137ca3c3ad287fb84ab40ac6609eff5cf329a039f29b25c39d8c348bf547f01d6e90616e9c11593bf8f294cc73858917ca0ef2a7d03c91d6b89d14
SSDEEP

6144:lloZMLrIkd8g+EtXHkv/iD4vc/yrRiK13wBzOurcVfb8e1mki:noZ0L+EP8vc/yrRiK13wBzOurCG

Score

10^/10

umbral credential_access execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/1672-1-0x0000000000940000-0x0000000000980000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2836	powershell.exe
2644	powershell.exe
1980	powershell.exe
2936	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe

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
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

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2476	wmic.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1672	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe
2936	powershell.exe
2836	powershell.exe
2644	powershell.exe
1604	powershell.exe
1980	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1672	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe
Token: SeIncreaseQuotaPrivilege	928	wmic.exe
Token: SeSecurityPrivilege	928	wmic.exe
Token: SeTakeOwnershipPrivilege	928	wmic.exe
Token: SeLoadDriverPrivilege	928	wmic.exe
Token: SeSystemProfilePrivilege	928	wmic.exe
Token: SeSystemtimePrivilege	928	wmic.exe
Token: SeProfSingleProcessPrivilege	928	wmic.exe
Token: SeIncBasePriorityPrivilege	928	wmic.exe
Token: SeCreatePagefilePrivilege	928	wmic.exe
Token: SeBackupPrivilege	928	wmic.exe
Token: SeRestorePrivilege	928	wmic.exe
Token: SeShutdownPrivilege	928	wmic.exe
Token: SeDebugPrivilege	928	wmic.exe
Token: SeSystemEnvironmentPrivilege	928	wmic.exe
Token: SeRemoteShutdownPrivilege	928	wmic.exe
Token: SeUndockPrivilege	928	wmic.exe
Token: SeManageVolumePrivilege	928	wmic.exe
Token: 33	928	wmic.exe
Token: 34	928	wmic.exe
Token: 35	928	wmic.exe
Token: SeIncreaseQuotaPrivilege	928	wmic.exe
Token: SeSecurityPrivilege	928	wmic.exe
Token: SeTakeOwnershipPrivilege	928	wmic.exe
Token: SeLoadDriverPrivilege	928	wmic.exe
Token: SeSystemProfilePrivilege	928	wmic.exe
Token: SeSystemtimePrivilege	928	wmic.exe
Token: SeProfSingleProcessPrivilege	928	wmic.exe
Token: SeIncBasePriorityPrivilege	928	wmic.exe
Token: SeCreatePagefilePrivilege	928	wmic.exe
Token: SeBackupPrivilege	928	wmic.exe
Token: SeRestorePrivilege	928	wmic.exe
Token: SeShutdownPrivilege	928	wmic.exe
Token: SeDebugPrivilege	928	wmic.exe
Token: SeSystemEnvironmentPrivilege	928	wmic.exe
Token: SeRemoteShutdownPrivilege	928	wmic.exe
Token: SeUndockPrivilege	928	wmic.exe
Token: SeManageVolumePrivilege	928	wmic.exe
Token: 33	928	wmic.exe
Token: 34	928	wmic.exe
Token: 35	928	wmic.exe
Token: SeDebugPrivilege	2936	powershell.exe
Token: SeDebugPrivilege	2836	powershell.exe
Token: SeDebugPrivilege	2644	powershell.exe
Token: SeDebugPrivilege	1604	powershell.exe
Token: SeIncreaseQuotaPrivilege	2872	wmic.exe
Token: SeSecurityPrivilege	2872	wmic.exe
Token: SeTakeOwnershipPrivilege	2872	wmic.exe
Token: SeLoadDriverPrivilege	2872	wmic.exe
Token: SeSystemProfilePrivilege	2872	wmic.exe
Token: SeSystemtimePrivilege	2872	wmic.exe
Token: SeProfSingleProcessPrivilege	2872	wmic.exe
Token: SeIncBasePriorityPrivilege	2872	wmic.exe
Token: SeCreatePagefilePrivilege	2872	wmic.exe
Token: SeBackupPrivilege	2872	wmic.exe
Token: SeRestorePrivilege	2872	wmic.exe
Token: SeShutdownPrivilege	2872	wmic.exe
Token: SeDebugPrivilege	2872	wmic.exe
Token: SeSystemEnvironmentPrivilege	2872	wmic.exe
Token: SeRemoteShutdownPrivilege	2872	wmic.exe
Token: SeUndockPrivilege	2872	wmic.exe
Token: SeManageVolumePrivilege	2872	wmic.exe
Token: 33	2872	wmic.exe
Token: 34	2872	wmic.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1672 wrote to memory of 928	1672	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe	31
PID 1672 wrote to memory of 928	1672	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe	31
PID 1672 wrote to memory of 928	1672	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe	31
PID 1672 wrote to memory of 2936	1672	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe	34
PID 1672 wrote to memory of 2936	1672	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe	34
PID 1672 wrote to memory of 2936	1672	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe	34
PID 1672 wrote to memory of 2836	1672	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe	36
PID 1672 wrote to memory of 2836	1672	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe	36
PID 1672 wrote to memory of 2836	1672	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe	36
PID 1672 wrote to memory of 2644	1672	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe	38
PID 1672 wrote to memory of 2644	1672	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe	38
PID 1672 wrote to memory of 2644	1672	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe	38
PID 1672 wrote to memory of 1604	1672	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe	40
PID 1672 wrote to memory of 1604	1672	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe	40
PID 1672 wrote to memory of 1604	1672	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe	40
PID 1672 wrote to memory of 2872	1672	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe	42
PID 1672 wrote to memory of 2872	1672	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe	42
PID 1672 wrote to memory of 2872	1672	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe	42
PID 1672 wrote to memory of 2404	1672	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe	44
PID 1672 wrote to memory of 2404	1672	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe	44
PID 1672 wrote to memory of 2404	1672	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe	44
PID 1672 wrote to memory of 924	1672	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe	46
PID 1672 wrote to memory of 924	1672	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe	46
PID 1672 wrote to memory of 924	1672	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe	46
PID 1672 wrote to memory of 1980	1672	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe	48
PID 1672 wrote to memory of 1980	1672	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe	48
PID 1672 wrote to memory of 1980	1672	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe	48
PID 1672 wrote to memory of 2476	1672	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe	50
PID 1672 wrote to memory of 2476	1672	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe	50
PID 1672 wrote to memory of 2476	1672	bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe	50

C:\Users\Admin\AppData\Local\Temp\bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe
"C:\Users\Admin\AppData\Local\Temp\bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1672
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:928
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\bb6f9600b07d01beeab0a868840ceea944a90d87fb5016ba71794ef68d0a19d6.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2936
- 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:2836
- 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:2644
- 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:1604
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2872
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2404
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:924
- 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:1980
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2476

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

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
14dceb4e0b2332aa6b7eeb287e37e5fa

SHA1
551d0c53bd83810e9196c0154e5b5b924760ce94

SHA256
dcf88c3ee7dba73f024da32978d7749cc6af4e25fabe735977f1382a08806517

SHA512
5cef33bef5e133228ebeb1897f6a0b61ecc2c90642b4774af86136edc89a43e6b18ee5f186835cb20fa6c398efb2f4dfe2dd6201afc29d9ca610def465b0826d

Download Submit
memory/1672-0-0x000007FEF66B3000-0x000007FEF66B4000-memory.dmp

Filesize
4KB

Download
memory/1672-1-0x0000000000940000-0x0000000000980000-memory.dmp

Filesize
256KB

Download
memory/1672-2-0x000007FEF66B0000-0x000007FEF709C000-memory.dmp

Filesize
9.9MB

Download
memory/1672-47-0x000007FEF66B0000-0x000007FEF709C000-memory.dmp

Filesize
9.9MB

Download
memory/1980-43-0x0000000001E10000-0x0000000001E18000-memory.dmp

Filesize
32KB

Download
memory/2836-14-0x000000001B6A0000-0x000000001B982000-memory.dmp

Filesize
2.9MB

Download
memory/2836-15-0x0000000001E00000-0x0000000001E08000-memory.dmp

Filesize
32KB

Download
memory/2936-7-0x000000001B810000-0x000000001BAF2000-memory.dmp

Filesize
2.9MB

Download
memory/2936-8-0x0000000001D20000-0x0000000001D28000-memory.dmp

Filesize
32KB

Download