umbral | 4fec5552f2a39ddd4bdcfd316ac96ecf9f6a413fb3a674d058d1695b88c8db5f

Analysis

max time kernel
430s
max time network
1154s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
10-08-2024 05:00

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General

Target

nigga.exe
Size

254KB
MD5

a57179fa58b196077b35da7eb4032a18
SHA1

92a6d5ac92fe534fa1c5cdb45bc95135ef3effad
SHA256

4fec5552f2a39ddd4bdcfd316ac96ecf9f6a413fb3a674d058d1695b88c8db5f
SHA512

d66f89a6f1b76e64de7f163a9cf4c31b1fcd2b1129800c1659f50d2a23e67e93820f64624ebacd25eeee193fee6e96a849f42687f5b4be9bdf8cab53f7ef31d7
SSDEEP

6144:K4oZoAeVHPtHgTIAaZgCwDx7axHU0unC28ejI8x7:xoZyHPvWCwjXCsIM

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/456-0-0x0000021D6EB80000-0x0000021D6EBC6000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

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
4032	powershell.exe
3592	powershell.exe
2504	powershell.exe
2148	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	nigga.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
33	discord.com
34	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
9	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
1060	cmd.exe
4948	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2760	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4948	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
456	nigga.exe
4032	powershell.exe
4032	powershell.exe
2148	powershell.exe
2148	powershell.exe
3592	powershell.exe
3592	powershell.exe
3744	powershell.exe
3744	powershell.exe
2504	powershell.exe
2504	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	456	nigga.exe
Token: SeIncreaseQuotaPrivilege	4488	wmic.exe
Token: SeSecurityPrivilege	4488	wmic.exe
Token: SeTakeOwnershipPrivilege	4488	wmic.exe
Token: SeLoadDriverPrivilege	4488	wmic.exe
Token: SeSystemProfilePrivilege	4488	wmic.exe
Token: SeSystemtimePrivilege	4488	wmic.exe
Token: SeProfSingleProcessPrivilege	4488	wmic.exe
Token: SeIncBasePriorityPrivilege	4488	wmic.exe
Token: SeCreatePagefilePrivilege	4488	wmic.exe
Token: SeBackupPrivilege	4488	wmic.exe
Token: SeRestorePrivilege	4488	wmic.exe
Token: SeShutdownPrivilege	4488	wmic.exe
Token: SeDebugPrivilege	4488	wmic.exe
Token: SeSystemEnvironmentPrivilege	4488	wmic.exe
Token: SeRemoteShutdownPrivilege	4488	wmic.exe
Token: SeUndockPrivilege	4488	wmic.exe
Token: SeManageVolumePrivilege	4488	wmic.exe
Token: 33	4488	wmic.exe
Token: 34	4488	wmic.exe
Token: 35	4488	wmic.exe
Token: 36	4488	wmic.exe
Token: SeIncreaseQuotaPrivilege	4488	wmic.exe
Token: SeSecurityPrivilege	4488	wmic.exe
Token: SeTakeOwnershipPrivilege	4488	wmic.exe
Token: SeLoadDriverPrivilege	4488	wmic.exe
Token: SeSystemProfilePrivilege	4488	wmic.exe
Token: SeSystemtimePrivilege	4488	wmic.exe
Token: SeProfSingleProcessPrivilege	4488	wmic.exe
Token: SeIncBasePriorityPrivilege	4488	wmic.exe
Token: SeCreatePagefilePrivilege	4488	wmic.exe
Token: SeBackupPrivilege	4488	wmic.exe
Token: SeRestorePrivilege	4488	wmic.exe
Token: SeShutdownPrivilege	4488	wmic.exe
Token: SeDebugPrivilege	4488	wmic.exe
Token: SeSystemEnvironmentPrivilege	4488	wmic.exe
Token: SeRemoteShutdownPrivilege	4488	wmic.exe
Token: SeUndockPrivilege	4488	wmic.exe
Token: SeManageVolumePrivilege	4488	wmic.exe
Token: 33	4488	wmic.exe
Token: 34	4488	wmic.exe
Token: 35	4488	wmic.exe
Token: 36	4488	wmic.exe
Token: SeDebugPrivilege	4032	powershell.exe
Token: SeDebugPrivilege	2148	powershell.exe
Token: SeDebugPrivilege	3592	powershell.exe
Token: SeDebugPrivilege	3744	powershell.exe
Token: SeIncreaseQuotaPrivilege	4360	wmic.exe
Token: SeSecurityPrivilege	4360	wmic.exe
Token: SeTakeOwnershipPrivilege	4360	wmic.exe
Token: SeLoadDriverPrivilege	4360	wmic.exe
Token: SeSystemProfilePrivilege	4360	wmic.exe
Token: SeSystemtimePrivilege	4360	wmic.exe
Token: SeProfSingleProcessPrivilege	4360	wmic.exe
Token: SeIncBasePriorityPrivilege	4360	wmic.exe
Token: SeCreatePagefilePrivilege	4360	wmic.exe
Token: SeBackupPrivilege	4360	wmic.exe
Token: SeRestorePrivilege	4360	wmic.exe
Token: SeShutdownPrivilege	4360	wmic.exe
Token: SeDebugPrivilege	4360	wmic.exe
Token: SeSystemEnvironmentPrivilege	4360	wmic.exe
Token: SeRemoteShutdownPrivilege	4360	wmic.exe
Token: SeUndockPrivilege	4360	wmic.exe
Token: SeManageVolumePrivilege	4360	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 456 wrote to memory of 4488	456	nigga.exe	85
PID 456 wrote to memory of 4488	456	nigga.exe	85
PID 456 wrote to memory of 4440	456	nigga.exe	90
PID 456 wrote to memory of 4440	456	nigga.exe	90
PID 456 wrote to memory of 4032	456	nigga.exe	92
PID 456 wrote to memory of 4032	456	nigga.exe	92
PID 456 wrote to memory of 2148	456	nigga.exe	94
PID 456 wrote to memory of 2148	456	nigga.exe	94
PID 456 wrote to memory of 3592	456	nigga.exe	96
PID 456 wrote to memory of 3592	456	nigga.exe	96
PID 456 wrote to memory of 3744	456	nigga.exe	98
PID 456 wrote to memory of 3744	456	nigga.exe	98
PID 456 wrote to memory of 4360	456	nigga.exe	100
PID 456 wrote to memory of 4360	456	nigga.exe	100
PID 456 wrote to memory of 1956	456	nigga.exe	104
PID 456 wrote to memory of 1956	456	nigga.exe	104
PID 456 wrote to memory of 2988	456	nigga.exe	106
PID 456 wrote to memory of 2988	456	nigga.exe	106
PID 456 wrote to memory of 2504	456	nigga.exe	108
PID 456 wrote to memory of 2504	456	nigga.exe	108
PID 456 wrote to memory of 2760	456	nigga.exe	110
PID 456 wrote to memory of 2760	456	nigga.exe	110
PID 456 wrote to memory of 1060	456	nigga.exe	113
PID 456 wrote to memory of 1060	456	nigga.exe	113
PID 1060 wrote to memory of 4948	1060	cmd.exe	115
PID 1060 wrote to memory of 4948	1060	cmd.exe	115

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4440	attrib.exe

C:\Users\Admin\AppData\Local\Temp\nigga.exe
"C:\Users\Admin\AppData\Local\Temp\nigga.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:456
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4488
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\nigga.exe"
  2⤵
  - Views/modifies file attributes
  PID:4440
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\nigga.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4032
- 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:2148
- 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:3592
- 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:3744
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4360
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1956
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2988
- 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:2504
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2760
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\nigga.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1060
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4948

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
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
74a6b79d36b4aae8b027a218bc6e1af7

SHA1
0350e46c1df6934903c4820a00b0bc4721779e5f

SHA256
60c64f6803d7ad1408d0a8628100470859b16ef332d5f1bd8bb2debe51251d04

SHA512
60e71435a9a23f4c144d641844f4182ddc9aa4ccd3e99232149a187112dce96458aab9587e9fea46f5dc5a52f5ca758969a04657a2b5b10241d3e4554f7c85e0

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

Filesize
1KB

MD5
548dd08570d121a65e82abb7171cae1c

SHA1
1a1b5084b3a78f3acd0d811cc79dbcac121217ab

SHA256
cdf17b8532ebcebac3cfe23954a30aa32edd268d040da79c82687e4ccb044adc

SHA512
37b98b09178b51eec9599af90d027d2f1028202efc1633047e16e41f1a95610984af5620baac07db085ccfcb96942aafffad17aa1f44f63233e83869dc9f697b

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_jau5yfyx.h0t.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/456-0-0x0000021D6EB80000-0x0000021D6EBC6000-memory.dmp

Filesize
280KB

Download
memory/456-2-0x00007FF8B04F0000-0x00007FF8B06E5000-memory.dmp

Filesize
2.0MB

Download
memory/456-1-0x00007FF8B04F0000-0x00007FF8B06E5000-memory.dmp

Filesize
2.0MB

Download
memory/456-31-0x0000021D71320000-0x0000021D71396000-memory.dmp

Filesize
472KB

Download
memory/456-32-0x0000021D713A0000-0x0000021D713F0000-memory.dmp

Filesize
320KB

Download
memory/456-33-0x0000021D713F0000-0x0000021D7140E000-memory.dmp

Filesize
120KB

Download
memory/456-69-0x0000021D71150000-0x0000021D7115A000-memory.dmp

Filesize
40KB

Download
memory/456-70-0x0000021D712A0000-0x0000021D712B2000-memory.dmp

Filesize
72KB

Download
memory/456-88-0x00007FF8B04F0000-0x00007FF8B06E5000-memory.dmp

Filesize
2.0MB

Download
memory/4032-3-0x00007FF8B04F0000-0x00007FF8B06E5000-memory.dmp

Filesize
2.0MB

Download
memory/4032-16-0x00007FF8B04F0000-0x00007FF8B06E5000-memory.dmp

Filesize
2.0MB

Download
memory/4032-13-0x00000265BD1E0000-0x00000265BD202000-memory.dmp

Filesize
136KB

Download