umbral | 65080b04dd095e82f027e05f0df8afd367f0b167d7400bf4e2e1626464166a02

Analysis

max time kernel
1563s
max time network
1567s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
07-06-2024 18:00

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General

Target

token bot.exe
Size

229KB
MD5

9dc985d83754309760ae45747d8081c2
SHA1

b60e1c39ee8da20c5bdf1df501fab12fd45eaf50
SHA256

f3fdf0137c30af49a71a174e204795a0b96ef2a8a0a53fda4add34574f79005b
SHA512

d0908c5e493bd83cd58e73b715c9318cb6032bb388d7c6ffbdc75b4bb813e594153a57e2ecebbe0a2d1aa0513312be16886b08ad8b91fc590217838057a730cf
SSDEEP

6144:tloZM+rIkd8g+EtXHkv/iD4hYBSGELnsmd42X3WVzb8e1mzi:voZtL+EP8hYBSGELnsmd42X3WtB

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/1184-1-0x0000000000BF0000-0x0000000000C30000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2476	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	token bot.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
8	discord.com
9	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
1632	wmic.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2476	powershell.exe
2620	powershell.exe
2660	powershell.exe
2468	powershell.exe
2328	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1184	token bot.exe
Token: SeDebugPrivilege	2476	powershell.exe
Token: SeDebugPrivilege	2620	powershell.exe
Token: SeDebugPrivilege	2660	powershell.exe
Token: SeDebugPrivilege	2468	powershell.exe
Token: SeIncreaseQuotaPrivilege	1788	wmic.exe
Token: SeSecurityPrivilege	1788	wmic.exe
Token: SeTakeOwnershipPrivilege	1788	wmic.exe
Token: SeLoadDriverPrivilege	1788	wmic.exe
Token: SeSystemProfilePrivilege	1788	wmic.exe
Token: SeSystemtimePrivilege	1788	wmic.exe
Token: SeProfSingleProcessPrivilege	1788	wmic.exe
Token: SeIncBasePriorityPrivilege	1788	wmic.exe
Token: SeCreatePagefilePrivilege	1788	wmic.exe
Token: SeBackupPrivilege	1788	wmic.exe
Token: SeRestorePrivilege	1788	wmic.exe
Token: SeShutdownPrivilege	1788	wmic.exe
Token: SeDebugPrivilege	1788	wmic.exe
Token: SeSystemEnvironmentPrivilege	1788	wmic.exe
Token: SeRemoteShutdownPrivilege	1788	wmic.exe
Token: SeUndockPrivilege	1788	wmic.exe
Token: SeManageVolumePrivilege	1788	wmic.exe
Token: 33	1788	wmic.exe
Token: 34	1788	wmic.exe
Token: 35	1788	wmic.exe
Token: SeIncreaseQuotaPrivilege	1788	wmic.exe
Token: SeSecurityPrivilege	1788	wmic.exe
Token: SeTakeOwnershipPrivilege	1788	wmic.exe
Token: SeLoadDriverPrivilege	1788	wmic.exe
Token: SeSystemProfilePrivilege	1788	wmic.exe
Token: SeSystemtimePrivilege	1788	wmic.exe
Token: SeProfSingleProcessPrivilege	1788	wmic.exe
Token: SeIncBasePriorityPrivilege	1788	wmic.exe
Token: SeCreatePagefilePrivilege	1788	wmic.exe
Token: SeBackupPrivilege	1788	wmic.exe
Token: SeRestorePrivilege	1788	wmic.exe
Token: SeShutdownPrivilege	1788	wmic.exe
Token: SeDebugPrivilege	1788	wmic.exe
Token: SeSystemEnvironmentPrivilege	1788	wmic.exe
Token: SeRemoteShutdownPrivilege	1788	wmic.exe
Token: SeUndockPrivilege	1788	wmic.exe
Token: SeManageVolumePrivilege	1788	wmic.exe
Token: 33	1788	wmic.exe
Token: 34	1788	wmic.exe
Token: 35	1788	wmic.exe
Token: SeIncreaseQuotaPrivilege	2336	wmic.exe
Token: SeSecurityPrivilege	2336	wmic.exe
Token: SeTakeOwnershipPrivilege	2336	wmic.exe
Token: SeLoadDriverPrivilege	2336	wmic.exe
Token: SeSystemProfilePrivilege	2336	wmic.exe
Token: SeSystemtimePrivilege	2336	wmic.exe
Token: SeProfSingleProcessPrivilege	2336	wmic.exe
Token: SeIncBasePriorityPrivilege	2336	wmic.exe
Token: SeCreatePagefilePrivilege	2336	wmic.exe
Token: SeBackupPrivilege	2336	wmic.exe
Token: SeRestorePrivilege	2336	wmic.exe
Token: SeShutdownPrivilege	2336	wmic.exe
Token: SeDebugPrivilege	2336	wmic.exe
Token: SeSystemEnvironmentPrivilege	2336	wmic.exe
Token: SeRemoteShutdownPrivilege	2336	wmic.exe
Token: SeUndockPrivilege	2336	wmic.exe
Token: SeManageVolumePrivilege	2336	wmic.exe
Token: 33	2336	wmic.exe
Token: 34	2336	wmic.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 1184 wrote to memory of 2476	1184	token bot.exe	28
PID 1184 wrote to memory of 2476	1184	token bot.exe	28
PID 1184 wrote to memory of 2476	1184	token bot.exe	28
PID 1184 wrote to memory of 2620	1184	token bot.exe	30
PID 1184 wrote to memory of 2620	1184	token bot.exe	30
PID 1184 wrote to memory of 2620	1184	token bot.exe	30
PID 1184 wrote to memory of 2660	1184	token bot.exe	32
PID 1184 wrote to memory of 2660	1184	token bot.exe	32
PID 1184 wrote to memory of 2660	1184	token bot.exe	32
PID 1184 wrote to memory of 2468	1184	token bot.exe	34
PID 1184 wrote to memory of 2468	1184	token bot.exe	34
PID 1184 wrote to memory of 2468	1184	token bot.exe	34
PID 1184 wrote to memory of 1788	1184	token bot.exe	36
PID 1184 wrote to memory of 1788	1184	token bot.exe	36
PID 1184 wrote to memory of 1788	1184	token bot.exe	36
PID 1184 wrote to memory of 2336	1184	token bot.exe	39
PID 1184 wrote to memory of 2336	1184	token bot.exe	39
PID 1184 wrote to memory of 2336	1184	token bot.exe	39
PID 1184 wrote to memory of 2312	1184	token bot.exe	41
PID 1184 wrote to memory of 2312	1184	token bot.exe	41
PID 1184 wrote to memory of 2312	1184	token bot.exe	41
PID 1184 wrote to memory of 2328	1184	token bot.exe	43
PID 1184 wrote to memory of 2328	1184	token bot.exe	43
PID 1184 wrote to memory of 2328	1184	token bot.exe	43
PID 1184 wrote to memory of 1632	1184	token bot.exe	45
PID 1184 wrote to memory of 1632	1184	token bot.exe	45
PID 1184 wrote to memory of 1632	1184	token bot.exe	45

C:\Users\Admin\AppData\Local\Temp\token bot.exe
"C:\Users\Admin\AppData\Local\Temp\token bot.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1184
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\token bot.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2476
- 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⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2620
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2660
- 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:2468
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1788
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2336
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2312
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:2328
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1632

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

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\6WYATA7LM90TGUUSEVK7.temp

Filesize
7KB

MD5
622003f6eedac8a619d28828955a5b50

SHA1
2cd30d578d9a7fd89b7622d5d4f616505e1bba90

SHA256
4ad82bd40c6eb825c471a0ccbe52f65f71996b6d67b2f8f75d58beb1549e738f

SHA512
3061db742edcc12845a2ccd8b8419e85cc8d37b29d4e359d27b95f1991a8dec8a89df0e66124466487cec88fd3103b907a3b0d8adf92c159fc5d6b6a71a269d5

Download Submit
memory/1184-0-0x000007FEF5063000-0x000007FEF5064000-memory.dmp

Filesize
4KB

Download
memory/1184-1-0x0000000000BF0000-0x0000000000C30000-memory.dmp

Filesize
256KB

Download
memory/1184-2-0x000007FEF5060000-0x000007FEF5A4C000-memory.dmp

Filesize
9.9MB

Download
memory/1184-48-0x000007FEF5060000-0x000007FEF5A4C000-memory.dmp

Filesize
9.9MB

Download
memory/2328-45-0x000000001B190000-0x000000001B472000-memory.dmp

Filesize
2.9MB

Download
memory/2476-12-0x000007FEED590000-0x000007FEEDF2D000-memory.dmp

Filesize
9.6MB

Download
memory/2476-11-0x000007FEED590000-0x000007FEEDF2D000-memory.dmp

Filesize
9.6MB

Download
memory/2476-13-0x000007FEED590000-0x000007FEEDF2D000-memory.dmp

Filesize
9.6MB

Download
memory/2476-10-0x0000000002360000-0x0000000002368000-memory.dmp

Filesize
32KB

Download
memory/2476-9-0x000000001B2D0000-0x000000001B5B2000-memory.dmp

Filesize
2.9MB

Download
memory/2476-8-0x000007FEED590000-0x000007FEEDF2D000-memory.dmp

Filesize
9.6MB

Download
memory/2476-7-0x000007FEED84E000-0x000007FEED84F000-memory.dmp

Filesize
4KB

Download
memory/2620-19-0x000000001B140000-0x000000001B422000-memory.dmp

Filesize
2.9MB

Download
memory/2620-20-0x0000000001E80000-0x0000000001E88000-memory.dmp

Filesize
32KB

Download