umbral | 195b749f6f3a16286bbe3670ba44433127072d3597a2bd213fc236b0cd04aa3c

Analysis

max time kernel
437s
max time network
468s
platform
windows11-21h2_x64
resource
win11-20241023-en
resource tags

arch:x64arch:x86image:win11-20241023-enlocale:en-usos:windows11-21h2-x64system
submitted
29-12-2024 17:10

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General

Target

TiktokBot.exe
Size

359KB
MD5

8669778992324151f3e3f6f454a9b7a3
SHA1

676cfdaf3b5b5e58441a814cabfa8fac3630ef15
SHA256

fa6e05570392f0c4dfe34ce0469eead7621388809cda5dd5e576c1e1ea6d6339
SHA512

8d86798a61443a26d16cefbeb0b74beb6837bbfb999a36ece22664b6beae8c2404520b6b4047bbbf52c3b278a2e897836e3b6657c9f082c18ce63d97a4d2e510
SSDEEP

6144:JloZM+rIkd8g+EtXHkv/iD4I06la43TwjJc6rrSNeb8e1myUi/Uy7P9f6dGYZthv:7oZtL+EP8I06la43TwjJc6rrSoZdnPcC

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/3856-1-0x0000014DBB450000-0x0000014DBB4B0000-memory.dmp	family_umbral

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

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

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

execution

PowerShell

T1059.001

pid	Process
3700	powershell.exe
2336	powershell.exe
2428	powershell.exe
4896	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
5	discord.com
1	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
1	ip-api.com

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
4604	cmd.exe
4764	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1872	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4764	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
3856	TiktokBot.exe
3700	powershell.exe
3700	powershell.exe
2336	powershell.exe
2336	powershell.exe
2428	powershell.exe
2428	powershell.exe
2920	powershell.exe
2920	powershell.exe
4896	powershell.exe
4896	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3856	TiktokBot.exe
Token: SeIncreaseQuotaPrivilege	2084	wmic.exe
Token: SeSecurityPrivilege	2084	wmic.exe
Token: SeTakeOwnershipPrivilege	2084	wmic.exe
Token: SeLoadDriverPrivilege	2084	wmic.exe
Token: SeSystemProfilePrivilege	2084	wmic.exe
Token: SeSystemtimePrivilege	2084	wmic.exe
Token: SeProfSingleProcessPrivilege	2084	wmic.exe
Token: SeIncBasePriorityPrivilege	2084	wmic.exe
Token: SeCreatePagefilePrivilege	2084	wmic.exe
Token: SeBackupPrivilege	2084	wmic.exe
Token: SeRestorePrivilege	2084	wmic.exe
Token: SeShutdownPrivilege	2084	wmic.exe
Token: SeDebugPrivilege	2084	wmic.exe
Token: SeSystemEnvironmentPrivilege	2084	wmic.exe
Token: SeRemoteShutdownPrivilege	2084	wmic.exe
Token: SeUndockPrivilege	2084	wmic.exe
Token: SeManageVolumePrivilege	2084	wmic.exe
Token: 33	2084	wmic.exe
Token: 34	2084	wmic.exe
Token: 35	2084	wmic.exe
Token: 36	2084	wmic.exe
Token: SeIncreaseQuotaPrivilege	2084	wmic.exe
Token: SeSecurityPrivilege	2084	wmic.exe
Token: SeTakeOwnershipPrivilege	2084	wmic.exe
Token: SeLoadDriverPrivilege	2084	wmic.exe
Token: SeSystemProfilePrivilege	2084	wmic.exe
Token: SeSystemtimePrivilege	2084	wmic.exe
Token: SeProfSingleProcessPrivilege	2084	wmic.exe
Token: SeIncBasePriorityPrivilege	2084	wmic.exe
Token: SeCreatePagefilePrivilege	2084	wmic.exe
Token: SeBackupPrivilege	2084	wmic.exe
Token: SeRestorePrivilege	2084	wmic.exe
Token: SeShutdownPrivilege	2084	wmic.exe
Token: SeDebugPrivilege	2084	wmic.exe
Token: SeSystemEnvironmentPrivilege	2084	wmic.exe
Token: SeRemoteShutdownPrivilege	2084	wmic.exe
Token: SeUndockPrivilege	2084	wmic.exe
Token: SeManageVolumePrivilege	2084	wmic.exe
Token: 33	2084	wmic.exe
Token: 34	2084	wmic.exe
Token: 35	2084	wmic.exe
Token: 36	2084	wmic.exe
Token: SeDebugPrivilege	3700	powershell.exe
Token: SeDebugPrivilege	2336	powershell.exe
Token: SeDebugPrivilege	2428	powershell.exe
Token: SeDebugPrivilege	2920	powershell.exe
Token: SeIncreaseQuotaPrivilege	3768	wmic.exe
Token: SeSecurityPrivilege	3768	wmic.exe
Token: SeTakeOwnershipPrivilege	3768	wmic.exe
Token: SeLoadDriverPrivilege	3768	wmic.exe
Token: SeSystemProfilePrivilege	3768	wmic.exe
Token: SeSystemtimePrivilege	3768	wmic.exe
Token: SeProfSingleProcessPrivilege	3768	wmic.exe
Token: SeIncBasePriorityPrivilege	3768	wmic.exe
Token: SeCreatePagefilePrivilege	3768	wmic.exe
Token: SeBackupPrivilege	3768	wmic.exe
Token: SeRestorePrivilege	3768	wmic.exe
Token: SeShutdownPrivilege	3768	wmic.exe
Token: SeDebugPrivilege	3768	wmic.exe
Token: SeSystemEnvironmentPrivilege	3768	wmic.exe
Token: SeRemoteShutdownPrivilege	3768	wmic.exe
Token: SeUndockPrivilege	3768	wmic.exe
Token: SeManageVolumePrivilege	3768	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3856 wrote to memory of 2084	3856	TiktokBot.exe	78
PID 3856 wrote to memory of 2084	3856	TiktokBot.exe	78
PID 3856 wrote to memory of 1652	3856	TiktokBot.exe	81
PID 3856 wrote to memory of 1652	3856	TiktokBot.exe	81
PID 3856 wrote to memory of 3700	3856	TiktokBot.exe	83
PID 3856 wrote to memory of 3700	3856	TiktokBot.exe	83
PID 3856 wrote to memory of 2336	3856	TiktokBot.exe	85
PID 3856 wrote to memory of 2336	3856	TiktokBot.exe	85
PID 3856 wrote to memory of 2428	3856	TiktokBot.exe	87
PID 3856 wrote to memory of 2428	3856	TiktokBot.exe	87
PID 3856 wrote to memory of 2920	3856	TiktokBot.exe	89
PID 3856 wrote to memory of 2920	3856	TiktokBot.exe	89
PID 3856 wrote to memory of 3768	3856	TiktokBot.exe	91
PID 3856 wrote to memory of 3768	3856	TiktokBot.exe	91
PID 3856 wrote to memory of 2068	3856	TiktokBot.exe	93
PID 3856 wrote to memory of 2068	3856	TiktokBot.exe	93
PID 3856 wrote to memory of 1684	3856	TiktokBot.exe	95
PID 3856 wrote to memory of 1684	3856	TiktokBot.exe	95
PID 3856 wrote to memory of 4896	3856	TiktokBot.exe	97
PID 3856 wrote to memory of 4896	3856	TiktokBot.exe	97
PID 3856 wrote to memory of 1872	3856	TiktokBot.exe	99
PID 3856 wrote to memory of 1872	3856	TiktokBot.exe	99
PID 3856 wrote to memory of 4604	3856	TiktokBot.exe	101
PID 3856 wrote to memory of 4604	3856	TiktokBot.exe	101
PID 4604 wrote to memory of 4764	4604	cmd.exe	103
PID 4604 wrote to memory of 4764	4604	cmd.exe	103

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1652	attrib.exe

C:\Users\Admin\AppData\Local\Temp\TiktokBot.exe
"C:\Users\Admin\AppData\Local\Temp\TiktokBot.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3856
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2084
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\TiktokBot.exe"
  2⤵
  - Views/modifies file attributes
  PID:1652
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\TiktokBot.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3700
- 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⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2336
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2428
- 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:2920
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3768
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2068
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1684
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:4896
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1872
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\TiktokBot.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4604
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4764

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

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Remote System Discovery

T1018

System Information Discovery

T1082

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

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
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

Filesize
944B

MD5
2ab9885ed803576dfcb4df976a3e7ca0

SHA1
49a54d1bb797dca76c41f6af288f9df6c705cf56

SHA256
9a7f8ca5a6bfcd5839a1cd029a116378bec3be1baec9db19bbe4f127199fb322

SHA512
b1f90e17c21425cd94a7f00438386ae40c7414784a96694432e340e35ba6a60e1176a2871a732474db4bd7080ebdbf4c476b61efa49fedf8208b382252ae25ba

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

Filesize
948B

MD5
6490e5c0581c173062323b1c20cfd9ff

SHA1
1652893659f99b780fd9733243637eb7795f5212

SHA256
a552b6d7bebb1714f01a5f3d8b5493e1b369c93ee68c62256dfddcc7f3f4fe79

SHA512
fdb077b40b4371a74cb70ae74d28a4433399e5c4a69fe9a5652409a62c2435d3197da42808d5cb65e9b7ff35bc2e593ad70fa83581c7fd672d631b25f53d3c65

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

Filesize
1KB

MD5
7332074ae2b01262736b6fbd9e100dac

SHA1
22f992165065107cc9417fa4117240d84414a13c

SHA256
baea84fda6c1f13090b8cbd91c920848946f10ce155ef31a1df4cd453ee7e4aa

SHA512
4ae6f0e012c31ac1fc2ff4a8877ce2b4667c45b6e651de798318a39a2b6fd39a6f72dffa8b0b89b7a045a27d724d195656faa25a9fec79b22f37ddebb5d22da2

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

Filesize
1KB

MD5
2feabfbd770a8288d9285124fc074393

SHA1
a343223e5743c80746c3f8baf90da92a8c3f85c3

SHA256
6379f1dac31d1ec4215ee1c74ff40a9b59dcabc581b99947367b49e8c00a8598

SHA512
035458175c3815aed655466cc5286a6de9215df98bcad39ad36b2834087a2f5ac31cbfc0f085854da59b3bb816a7f773b71ce1e78aaf4817b3257c177071e7eb

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_bismx1eg.3qf.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3700-11-0x000001AF6DF10000-0x000001AF6DF32000-memory.dmp

Filesize
136KB

Download
memory/3700-12-0x00007FFA0CAD0000-0x00007FFA0D592000-memory.dmp

Filesize
10.8MB

Download
memory/3700-13-0x00007FFA0CAD0000-0x00007FFA0D592000-memory.dmp

Filesize
10.8MB

Download
memory/3700-14-0x00007FFA0CAD0000-0x00007FFA0D592000-memory.dmp

Filesize
10.8MB

Download
memory/3700-17-0x00007FFA0CAD0000-0x00007FFA0D592000-memory.dmp

Filesize
10.8MB

Download
memory/3856-32-0x0000014DBD1E0000-0x0000014DBD230000-memory.dmp

Filesize
320KB

Download
memory/3856-31-0x0000014DD5A50000-0x0000014DD5AC6000-memory.dmp

Filesize
472KB

Download
memory/3856-33-0x0000014DD5AD0000-0x0000014DD5AEE000-memory.dmp

Filesize
120KB

Download
memory/3856-1-0x0000014DBB450000-0x0000014DBB4B0000-memory.dmp

Filesize
384KB

Download
memory/3856-0-0x00007FFA0CAD3000-0x00007FFA0CAD5000-memory.dmp

Filesize
8KB

Download
memory/3856-68-0x0000014DBD190000-0x0000014DBD19A000-memory.dmp

Filesize
40KB

Download
memory/3856-69-0x0000014DBD1C0000-0x0000014DBD1D2000-memory.dmp

Filesize
72KB

Download
memory/3856-2-0x00007FFA0CAD0000-0x00007FFA0D592000-memory.dmp

Filesize
10.8MB

Download
memory/3856-88-0x00007FFA0CAD0000-0x00007FFA0D592000-memory.dmp

Filesize
10.8MB

Download