umbral | 195b749f6f3a16286bbe3670ba44433127072d3597a2bd213fc236b0cd04aa3c

Analysis

max time kernel
120s
max time network
124s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
29-12-2024 17:29

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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/2132-1-0x0000000000040000-0x00000000000A0000-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
2792	powershell.exe
808	powershell.exe
2844	powershell.exe
1804	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Deletes itself 1 IoCs

pid	Process
1256	cmd.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
9	discord.com
10	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
6	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
1256	cmd.exe
2256	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1424	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2256	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2132	TiktokBot.exe
2792	powershell.exe
2844	powershell.exe
1804	powershell.exe
1136	powershell.exe
808	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2132	TiktokBot.exe
Token: SeIncreaseQuotaPrivilege	2140	wmic.exe
Token: SeSecurityPrivilege	2140	wmic.exe
Token: SeTakeOwnershipPrivilege	2140	wmic.exe
Token: SeLoadDriverPrivilege	2140	wmic.exe
Token: SeSystemProfilePrivilege	2140	wmic.exe
Token: SeSystemtimePrivilege	2140	wmic.exe
Token: SeProfSingleProcessPrivilege	2140	wmic.exe
Token: SeIncBasePriorityPrivilege	2140	wmic.exe
Token: SeCreatePagefilePrivilege	2140	wmic.exe
Token: SeBackupPrivilege	2140	wmic.exe
Token: SeRestorePrivilege	2140	wmic.exe
Token: SeShutdownPrivilege	2140	wmic.exe
Token: SeDebugPrivilege	2140	wmic.exe
Token: SeSystemEnvironmentPrivilege	2140	wmic.exe
Token: SeRemoteShutdownPrivilege	2140	wmic.exe
Token: SeUndockPrivilege	2140	wmic.exe
Token: SeManageVolumePrivilege	2140	wmic.exe
Token: 33	2140	wmic.exe
Token: 34	2140	wmic.exe
Token: 35	2140	wmic.exe
Token: SeIncreaseQuotaPrivilege	2140	wmic.exe
Token: SeSecurityPrivilege	2140	wmic.exe
Token: SeTakeOwnershipPrivilege	2140	wmic.exe
Token: SeLoadDriverPrivilege	2140	wmic.exe
Token: SeSystemProfilePrivilege	2140	wmic.exe
Token: SeSystemtimePrivilege	2140	wmic.exe
Token: SeProfSingleProcessPrivilege	2140	wmic.exe
Token: SeIncBasePriorityPrivilege	2140	wmic.exe
Token: SeCreatePagefilePrivilege	2140	wmic.exe
Token: SeBackupPrivilege	2140	wmic.exe
Token: SeRestorePrivilege	2140	wmic.exe
Token: SeShutdownPrivilege	2140	wmic.exe
Token: SeDebugPrivilege	2140	wmic.exe
Token: SeSystemEnvironmentPrivilege	2140	wmic.exe
Token: SeRemoteShutdownPrivilege	2140	wmic.exe
Token: SeUndockPrivilege	2140	wmic.exe
Token: SeManageVolumePrivilege	2140	wmic.exe
Token: 33	2140	wmic.exe
Token: 34	2140	wmic.exe
Token: 35	2140	wmic.exe
Token: SeDebugPrivilege	2792	powershell.exe
Token: SeDebugPrivilege	2844	powershell.exe
Token: SeDebugPrivilege	1804	powershell.exe
Token: SeDebugPrivilege	1136	powershell.exe
Token: SeIncreaseQuotaPrivilege	2276	wmic.exe
Token: SeSecurityPrivilege	2276	wmic.exe
Token: SeTakeOwnershipPrivilege	2276	wmic.exe
Token: SeLoadDriverPrivilege	2276	wmic.exe
Token: SeSystemProfilePrivilege	2276	wmic.exe
Token: SeSystemtimePrivilege	2276	wmic.exe
Token: SeProfSingleProcessPrivilege	2276	wmic.exe
Token: SeIncBasePriorityPrivilege	2276	wmic.exe
Token: SeCreatePagefilePrivilege	2276	wmic.exe
Token: SeBackupPrivilege	2276	wmic.exe
Token: SeRestorePrivilege	2276	wmic.exe
Token: SeShutdownPrivilege	2276	wmic.exe
Token: SeDebugPrivilege	2276	wmic.exe
Token: SeSystemEnvironmentPrivilege	2276	wmic.exe
Token: SeRemoteShutdownPrivilege	2276	wmic.exe
Token: SeUndockPrivilege	2276	wmic.exe
Token: SeManageVolumePrivilege	2276	wmic.exe
Token: 33	2276	wmic.exe
Token: 34	2276	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2132 wrote to memory of 2140	2132	TiktokBot.exe	30
PID 2132 wrote to memory of 2140	2132	TiktokBot.exe	30
PID 2132 wrote to memory of 2140	2132	TiktokBot.exe	30
PID 2132 wrote to memory of 2804	2132	TiktokBot.exe	33
PID 2132 wrote to memory of 2804	2132	TiktokBot.exe	33
PID 2132 wrote to memory of 2804	2132	TiktokBot.exe	33
PID 2132 wrote to memory of 2792	2132	TiktokBot.exe	35
PID 2132 wrote to memory of 2792	2132	TiktokBot.exe	35
PID 2132 wrote to memory of 2792	2132	TiktokBot.exe	35
PID 2132 wrote to memory of 2844	2132	TiktokBot.exe	37
PID 2132 wrote to memory of 2844	2132	TiktokBot.exe	37
PID 2132 wrote to memory of 2844	2132	TiktokBot.exe	37
PID 2132 wrote to memory of 1804	2132	TiktokBot.exe	39
PID 2132 wrote to memory of 1804	2132	TiktokBot.exe	39
PID 2132 wrote to memory of 1804	2132	TiktokBot.exe	39
PID 2132 wrote to memory of 1136	2132	TiktokBot.exe	41
PID 2132 wrote to memory of 1136	2132	TiktokBot.exe	41
PID 2132 wrote to memory of 1136	2132	TiktokBot.exe	41
PID 2132 wrote to memory of 2276	2132	TiktokBot.exe	43
PID 2132 wrote to memory of 2276	2132	TiktokBot.exe	43
PID 2132 wrote to memory of 2276	2132	TiktokBot.exe	43
PID 2132 wrote to memory of 1240	2132	TiktokBot.exe	45
PID 2132 wrote to memory of 1240	2132	TiktokBot.exe	45
PID 2132 wrote to memory of 1240	2132	TiktokBot.exe	45
PID 2132 wrote to memory of 688	2132	TiktokBot.exe	47
PID 2132 wrote to memory of 688	2132	TiktokBot.exe	47
PID 2132 wrote to memory of 688	2132	TiktokBot.exe	47
PID 2132 wrote to memory of 808	2132	TiktokBot.exe	49
PID 2132 wrote to memory of 808	2132	TiktokBot.exe	49
PID 2132 wrote to memory of 808	2132	TiktokBot.exe	49
PID 2132 wrote to memory of 1424	2132	TiktokBot.exe	51
PID 2132 wrote to memory of 1424	2132	TiktokBot.exe	51
PID 2132 wrote to memory of 1424	2132	TiktokBot.exe	51
PID 2132 wrote to memory of 1256	2132	TiktokBot.exe	53
PID 2132 wrote to memory of 1256	2132	TiktokBot.exe	53
PID 2132 wrote to memory of 1256	2132	TiktokBot.exe	53
PID 1256 wrote to memory of 2256	1256	cmd.exe	55
PID 1256 wrote to memory of 2256	1256	cmd.exe	55
PID 1256 wrote to memory of 2256	1256	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2804	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:2132
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2140
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\TiktokBot.exe"
  2⤵
  - Views/modifies file attributes
  PID:2804
- 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:2792
- 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:2844
- 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:1804
- 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:1136
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2276
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1240
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:688
- 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:808
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1424
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\TiktokBot.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1256
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2256

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\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
6f712c6f86d8e154c3a576048efdc604

SHA1
8671aa3316928498e2de24333050d19e5aeae890

SHA256
7471d315d57b2ca7d6040f71368d961df42a113603187ac058a47bf2e6787cc0

SHA512
f2ae9a2fca8669913dd7a5e28ef34345ab69cfcda8f346eb1a017b5c7e406281843d3203bb66819c25289dcad31c295f3329c3d3c525ab411f9e3e3f13d61bf0

Download Submit
memory/808-47-0x0000000001E50000-0x0000000001E58000-memory.dmp

Filesize
32KB

Download
memory/2132-35-0x000007FEF6403000-0x000007FEF6404000-memory.dmp

Filesize
4KB

Download
memory/2132-1-0x0000000000040000-0x00000000000A0000-memory.dmp

Filesize
384KB

Download
memory/2132-2-0x000007FEF6400000-0x000007FEF6DEC000-memory.dmp

Filesize
9.9MB

Download
memory/2132-0-0x000007FEF6403000-0x000007FEF6404000-memory.dmp

Filesize
4KB

Download
memory/2132-52-0x000007FEF6400000-0x000007FEF6DEC000-memory.dmp

Filesize
9.9MB

Download
memory/2132-41-0x000007FEF6400000-0x000007FEF6DEC000-memory.dmp

Filesize
9.9MB

Download
memory/2792-7-0x000000001B3A0000-0x000000001B682000-memory.dmp

Filesize
2.9MB

Download
memory/2792-8-0x0000000000610000-0x0000000000618000-memory.dmp

Filesize
32KB

Download
memory/2844-15-0x0000000001FC0000-0x0000000001FC8000-memory.dmp

Filesize
32KB

Download
memory/2844-14-0x000000001B3B0000-0x000000001B692000-memory.dmp

Filesize
2.9MB

Download