umbral | 23d243e1536abc2db4f5fd8253b7cbe8b02ef16e49ffca91c7776e748d676f39

Analysis

max time kernel
1778s
max time network
1168s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
11-05-2024 19:57

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General

Target

Pookies Bypasser.exe
Size

235KB
MD5

eaa079e27ede6b0a950044b79ac18a4f
SHA1

ca1fcd2e66d31d069a70fb2498ee55222f0bc951
SHA256

23d243e1536abc2db4f5fd8253b7cbe8b02ef16e49ffca91c7776e748d676f39
SHA512

5912f2dcb1c1ef313bf54bd31321cdd14d4529a360e394424291df29c27225c6c8f7fe978ef4e7c75aa72040334fc0d9b4b4cb678ea6dd2b57c1c50ba68b9f96
SSDEEP

6144:HloZM+rIkd8g+EtXHkv/iD4tFLGQWRJ60vSgR1E4Cb8e1mQfio:FoZtL+EP8tFLGQWRJ60vSgR1E7PKo

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/840-1-0x000001F8FC260000-0x000001F8FC2A0000-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
2420	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
18	discord.com
17	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
3	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4664	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
412	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
840	Pookies Bypasser.exe
2420	powershell.exe
2420	powershell.exe
4248	powershell.exe
4248	powershell.exe
4000	powershell.exe
4000	powershell.exe
1636	powershell.exe
1636	powershell.exe
2776	powershell.exe
2776	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	840	Pookies Bypasser.exe
Token: SeIncreaseQuotaPrivilege	2584	wmic.exe
Token: SeSecurityPrivilege	2584	wmic.exe
Token: SeTakeOwnershipPrivilege	2584	wmic.exe
Token: SeLoadDriverPrivilege	2584	wmic.exe
Token: SeSystemProfilePrivilege	2584	wmic.exe
Token: SeSystemtimePrivilege	2584	wmic.exe
Token: SeProfSingleProcessPrivilege	2584	wmic.exe
Token: SeIncBasePriorityPrivilege	2584	wmic.exe
Token: SeCreatePagefilePrivilege	2584	wmic.exe
Token: SeBackupPrivilege	2584	wmic.exe
Token: SeRestorePrivilege	2584	wmic.exe
Token: SeShutdownPrivilege	2584	wmic.exe
Token: SeDebugPrivilege	2584	wmic.exe
Token: SeSystemEnvironmentPrivilege	2584	wmic.exe
Token: SeRemoteShutdownPrivilege	2584	wmic.exe
Token: SeUndockPrivilege	2584	wmic.exe
Token: SeManageVolumePrivilege	2584	wmic.exe
Token: 33	2584	wmic.exe
Token: 34	2584	wmic.exe
Token: 35	2584	wmic.exe
Token: 36	2584	wmic.exe
Token: SeIncreaseQuotaPrivilege	2584	wmic.exe
Token: SeSecurityPrivilege	2584	wmic.exe
Token: SeTakeOwnershipPrivilege	2584	wmic.exe
Token: SeLoadDriverPrivilege	2584	wmic.exe
Token: SeSystemProfilePrivilege	2584	wmic.exe
Token: SeSystemtimePrivilege	2584	wmic.exe
Token: SeProfSingleProcessPrivilege	2584	wmic.exe
Token: SeIncBasePriorityPrivilege	2584	wmic.exe
Token: SeCreatePagefilePrivilege	2584	wmic.exe
Token: SeBackupPrivilege	2584	wmic.exe
Token: SeRestorePrivilege	2584	wmic.exe
Token: SeShutdownPrivilege	2584	wmic.exe
Token: SeDebugPrivilege	2584	wmic.exe
Token: SeSystemEnvironmentPrivilege	2584	wmic.exe
Token: SeRemoteShutdownPrivilege	2584	wmic.exe
Token: SeUndockPrivilege	2584	wmic.exe
Token: SeManageVolumePrivilege	2584	wmic.exe
Token: 33	2584	wmic.exe
Token: 34	2584	wmic.exe
Token: 35	2584	wmic.exe
Token: 36	2584	wmic.exe
Token: SeDebugPrivilege	2420	powershell.exe
Token: SeDebugPrivilege	4248	powershell.exe
Token: SeDebugPrivilege	4000	powershell.exe
Token: SeDebugPrivilege	1636	powershell.exe
Token: SeIncreaseQuotaPrivilege	4504	wmic.exe
Token: SeSecurityPrivilege	4504	wmic.exe
Token: SeTakeOwnershipPrivilege	4504	wmic.exe
Token: SeLoadDriverPrivilege	4504	wmic.exe
Token: SeSystemProfilePrivilege	4504	wmic.exe
Token: SeSystemtimePrivilege	4504	wmic.exe
Token: SeProfSingleProcessPrivilege	4504	wmic.exe
Token: SeIncBasePriorityPrivilege	4504	wmic.exe
Token: SeCreatePagefilePrivilege	4504	wmic.exe
Token: SeBackupPrivilege	4504	wmic.exe
Token: SeRestorePrivilege	4504	wmic.exe
Token: SeShutdownPrivilege	4504	wmic.exe
Token: SeDebugPrivilege	4504	wmic.exe
Token: SeSystemEnvironmentPrivilege	4504	wmic.exe
Token: SeRemoteShutdownPrivilege	4504	wmic.exe
Token: SeUndockPrivilege	4504	wmic.exe
Token: SeManageVolumePrivilege	4504	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 840 wrote to memory of 2584	840	Pookies Bypasser.exe	82
PID 840 wrote to memory of 2584	840	Pookies Bypasser.exe	82
PID 840 wrote to memory of 4752	840	Pookies Bypasser.exe	88
PID 840 wrote to memory of 4752	840	Pookies Bypasser.exe	88
PID 840 wrote to memory of 2420	840	Pookies Bypasser.exe	90
PID 840 wrote to memory of 2420	840	Pookies Bypasser.exe	90
PID 840 wrote to memory of 4248	840	Pookies Bypasser.exe	92
PID 840 wrote to memory of 4248	840	Pookies Bypasser.exe	92
PID 840 wrote to memory of 4000	840	Pookies Bypasser.exe	94
PID 840 wrote to memory of 4000	840	Pookies Bypasser.exe	94
PID 840 wrote to memory of 1636	840	Pookies Bypasser.exe	96
PID 840 wrote to memory of 1636	840	Pookies Bypasser.exe	96
PID 840 wrote to memory of 4504	840	Pookies Bypasser.exe	99
PID 840 wrote to memory of 4504	840	Pookies Bypasser.exe	99
PID 840 wrote to memory of 3568	840	Pookies Bypasser.exe	101
PID 840 wrote to memory of 3568	840	Pookies Bypasser.exe	101
PID 840 wrote to memory of 1476	840	Pookies Bypasser.exe	103
PID 840 wrote to memory of 1476	840	Pookies Bypasser.exe	103
PID 840 wrote to memory of 2776	840	Pookies Bypasser.exe	105
PID 840 wrote to memory of 2776	840	Pookies Bypasser.exe	105
PID 840 wrote to memory of 4664	840	Pookies Bypasser.exe	107
PID 840 wrote to memory of 4664	840	Pookies Bypasser.exe	107
PID 840 wrote to memory of 3656	840	Pookies Bypasser.exe	110
PID 840 wrote to memory of 3656	840	Pookies Bypasser.exe	110
PID 3656 wrote to memory of 412	3656	cmd.exe	112
PID 3656 wrote to memory of 412	3656	cmd.exe	112

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4752	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:840
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2584
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.exe"
  2⤵
  - Views/modifies file attributes
  PID:4752
- 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:2420
- 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:4248
- 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:4000
- 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:1636
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4504
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:3568
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1476
- 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:2776
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4664
- 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:3656
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:412

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
6d3e9c29fe44e90aae6ed30ccf799ca8

SHA1
c7974ef72264bbdf13a2793ccf1aed11bc565dce

SHA256
2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

SHA512
60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

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
82b8238e742ea60ccfd8de8f9641ee75

SHA1
82442dc3909743c6da5ba2ddbb8b466de933915a

SHA256
8e5a14b70ae648735499c2fd443e8541c0f1d652d35bc877d12b33f12ab6e7b8

SHA512
2896e0744c2349053f2af959d50d1c7d6dbb42a9b5845a5a571098661998f53c6540bd3179fd817268b46501e62854a3bc80d2a2078c128e72ce18f1f95b7317

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_tjqkj1ih.vwx.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/840-71-0x000001F8FE820000-0x000001F8FE82A000-memory.dmp

Filesize
40KB

Download
memory/840-35-0x000001F8FEAB0000-0x000001F8FEACE000-memory.dmp

Filesize
120KB

Download
memory/840-91-0x00007FF96DF70000-0x00007FF96EA31000-memory.dmp

Filesize
10.8MB

Download
memory/840-90-0x000001F8FEC50000-0x000001F8FEDF9000-memory.dmp

Filesize
1.7MB

Download
memory/840-2-0x00007FF96DF70000-0x00007FF96EA31000-memory.dmp

Filesize
10.8MB

Download
memory/840-33-0x000001F8FE9C0000-0x000001F8FEA36000-memory.dmp

Filesize
472KB

Download
memory/840-34-0x000001F8FEA40000-0x000001F8FEA90000-memory.dmp

Filesize
320KB

Download
memory/840-72-0x000001F8FE850000-0x000001F8FE862000-memory.dmp

Filesize
72KB

Download
memory/840-1-0x000001F8FC260000-0x000001F8FC2A0000-memory.dmp

Filesize
256KB

Download
memory/840-0-0x00007FF96DF73000-0x00007FF96DF75000-memory.dmp

Filesize
8KB

Download
memory/2420-10-0x00007FF96DF70000-0x00007FF96EA31000-memory.dmp

Filesize
10.8MB

Download
memory/2420-15-0x00007FF96DF70000-0x00007FF96EA31000-memory.dmp

Filesize
10.8MB

Download
memory/2420-14-0x00007FF96DF70000-0x00007FF96EA31000-memory.dmp

Filesize
10.8MB

Download
memory/2420-8-0x0000027746B20000-0x0000027746B42000-memory.dmp

Filesize
136KB

Download
memory/2420-18-0x00007FF96DF70000-0x00007FF96EA31000-memory.dmp

Filesize
10.8MB

Download