umbral | 4fec5552f2a39ddd4bdcfd316ac96ecf9f6a413fb3a674d058d1695b88c8db5f

Analysis

max time kernel
840s
max time network
842s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-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
behavioral1/memory/2400-1-0x0000000001230000-0x0000000001276000-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

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2648	powershell.exe
776	powershell.exe
2108	powershell.exe
2764	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Deletes itself 1 IoCs

pid	Process
2196	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

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
2196	cmd.exe
1028	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2124	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1028	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2400	nigga.exe
2764	powershell.exe
2108	powershell.exe
2648	powershell.exe
1464	powershell.exe
776	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2400	nigga.exe
Token: SeIncreaseQuotaPrivilege	2236	wmic.exe
Token: SeSecurityPrivilege	2236	wmic.exe
Token: SeTakeOwnershipPrivilege	2236	wmic.exe
Token: SeLoadDriverPrivilege	2236	wmic.exe
Token: SeSystemProfilePrivilege	2236	wmic.exe
Token: SeSystemtimePrivilege	2236	wmic.exe
Token: SeProfSingleProcessPrivilege	2236	wmic.exe
Token: SeIncBasePriorityPrivilege	2236	wmic.exe
Token: SeCreatePagefilePrivilege	2236	wmic.exe
Token: SeBackupPrivilege	2236	wmic.exe
Token: SeRestorePrivilege	2236	wmic.exe
Token: SeShutdownPrivilege	2236	wmic.exe
Token: SeDebugPrivilege	2236	wmic.exe
Token: SeSystemEnvironmentPrivilege	2236	wmic.exe
Token: SeRemoteShutdownPrivilege	2236	wmic.exe
Token: SeUndockPrivilege	2236	wmic.exe
Token: SeManageVolumePrivilege	2236	wmic.exe
Token: 33	2236	wmic.exe
Token: 34	2236	wmic.exe
Token: 35	2236	wmic.exe
Token: SeIncreaseQuotaPrivilege	2236	wmic.exe
Token: SeSecurityPrivilege	2236	wmic.exe
Token: SeTakeOwnershipPrivilege	2236	wmic.exe
Token: SeLoadDriverPrivilege	2236	wmic.exe
Token: SeSystemProfilePrivilege	2236	wmic.exe
Token: SeSystemtimePrivilege	2236	wmic.exe
Token: SeProfSingleProcessPrivilege	2236	wmic.exe
Token: SeIncBasePriorityPrivilege	2236	wmic.exe
Token: SeCreatePagefilePrivilege	2236	wmic.exe
Token: SeBackupPrivilege	2236	wmic.exe
Token: SeRestorePrivilege	2236	wmic.exe
Token: SeShutdownPrivilege	2236	wmic.exe
Token: SeDebugPrivilege	2236	wmic.exe
Token: SeSystemEnvironmentPrivilege	2236	wmic.exe
Token: SeRemoteShutdownPrivilege	2236	wmic.exe
Token: SeUndockPrivilege	2236	wmic.exe
Token: SeManageVolumePrivilege	2236	wmic.exe
Token: 33	2236	wmic.exe
Token: 34	2236	wmic.exe
Token: 35	2236	wmic.exe
Token: SeDebugPrivilege	2764	powershell.exe
Token: SeDebugPrivilege	2108	powershell.exe
Token: SeDebugPrivilege	2648	powershell.exe
Token: SeDebugPrivilege	1464	powershell.exe
Token: SeIncreaseQuotaPrivilege	2912	wmic.exe
Token: SeSecurityPrivilege	2912	wmic.exe
Token: SeTakeOwnershipPrivilege	2912	wmic.exe
Token: SeLoadDriverPrivilege	2912	wmic.exe
Token: SeSystemProfilePrivilege	2912	wmic.exe
Token: SeSystemtimePrivilege	2912	wmic.exe
Token: SeProfSingleProcessPrivilege	2912	wmic.exe
Token: SeIncBasePriorityPrivilege	2912	wmic.exe
Token: SeCreatePagefilePrivilege	2912	wmic.exe
Token: SeBackupPrivilege	2912	wmic.exe
Token: SeRestorePrivilege	2912	wmic.exe
Token: SeShutdownPrivilege	2912	wmic.exe
Token: SeDebugPrivilege	2912	wmic.exe
Token: SeSystemEnvironmentPrivilege	2912	wmic.exe
Token: SeRemoteShutdownPrivilege	2912	wmic.exe
Token: SeUndockPrivilege	2912	wmic.exe
Token: SeManageVolumePrivilege	2912	wmic.exe
Token: 33	2912	wmic.exe
Token: 34	2912	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2400 wrote to memory of 2236	2400	nigga.exe	30
PID 2400 wrote to memory of 2236	2400	nigga.exe	30
PID 2400 wrote to memory of 2236	2400	nigga.exe	30
PID 2400 wrote to memory of 2860	2400	nigga.exe	34
PID 2400 wrote to memory of 2860	2400	nigga.exe	34
PID 2400 wrote to memory of 2860	2400	nigga.exe	34
PID 2400 wrote to memory of 2764	2400	nigga.exe	36
PID 2400 wrote to memory of 2764	2400	nigga.exe	36
PID 2400 wrote to memory of 2764	2400	nigga.exe	36
PID 2400 wrote to memory of 2108	2400	nigga.exe	38
PID 2400 wrote to memory of 2108	2400	nigga.exe	38
PID 2400 wrote to memory of 2108	2400	nigga.exe	38
PID 2400 wrote to memory of 2648	2400	nigga.exe	40
PID 2400 wrote to memory of 2648	2400	nigga.exe	40
PID 2400 wrote to memory of 2648	2400	nigga.exe	40
PID 2400 wrote to memory of 1464	2400	nigga.exe	42
PID 2400 wrote to memory of 1464	2400	nigga.exe	42
PID 2400 wrote to memory of 1464	2400	nigga.exe	42
PID 2400 wrote to memory of 2912	2400	nigga.exe	44
PID 2400 wrote to memory of 2912	2400	nigga.exe	44
PID 2400 wrote to memory of 2912	2400	nigga.exe	44
PID 2400 wrote to memory of 348	2400	nigga.exe	46
PID 2400 wrote to memory of 348	2400	nigga.exe	46
PID 2400 wrote to memory of 348	2400	nigga.exe	46
PID 2400 wrote to memory of 2928	2400	nigga.exe	48
PID 2400 wrote to memory of 2928	2400	nigga.exe	48
PID 2400 wrote to memory of 2928	2400	nigga.exe	48
PID 2400 wrote to memory of 776	2400	nigga.exe	50
PID 2400 wrote to memory of 776	2400	nigga.exe	50
PID 2400 wrote to memory of 776	2400	nigga.exe	50
PID 2400 wrote to memory of 2124	2400	nigga.exe	52
PID 2400 wrote to memory of 2124	2400	nigga.exe	52
PID 2400 wrote to memory of 2124	2400	nigga.exe	52
PID 2400 wrote to memory of 2196	2400	nigga.exe	54
PID 2400 wrote to memory of 2196	2400	nigga.exe	54
PID 2400 wrote to memory of 2196	2400	nigga.exe	54
PID 2196 wrote to memory of 1028	2196	cmd.exe	56
PID 2196 wrote to memory of 1028	2196	cmd.exe	56
PID 2196 wrote to memory of 1028	2196	cmd.exe	56

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2860	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:2400
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2236
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\nigga.exe"
  2⤵
  - Views/modifies file attributes
  PID:2860
- 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:2764
- 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:2108
- 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:2648
- 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:1464
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2912
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:348
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2928
- 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:776
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2124
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\nigga.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2196
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1028

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
f9065007633d727ea40fd5a3e6a5156a

SHA1
cfa2ee08a1dd2548d945697b56816d2b3776b3d9

SHA256
40931357133e68d2bff4578985f14c6d4ac98be9c3e734b5150214d4444cb0e3

SHA512
76b8241c8f92b180d60633e0ff1be4a1193278a5837fb82df5e817491052e046434b18259ca953f3638e124deb465ac4050e62c21723216e59f2ad71023083f5

Download Submit
memory/776-42-0x0000000001D90000-0x0000000001D98000-memory.dmp

Filesize
32KB

Download
memory/2108-14-0x000000001B770000-0x000000001BA52000-memory.dmp

Filesize
2.9MB

Download
memory/2108-15-0x0000000001C80000-0x0000000001C88000-memory.dmp

Filesize
32KB

Download
memory/2400-0-0x000007FEF6683000-0x000007FEF6684000-memory.dmp

Filesize
4KB

Download
memory/2400-1-0x0000000001230000-0x0000000001276000-memory.dmp

Filesize
280KB

Download
memory/2400-2-0x000007FEF6680000-0x000007FEF706C000-memory.dmp

Filesize
9.9MB

Download
memory/2400-46-0x000007FEF6680000-0x000007FEF706C000-memory.dmp

Filesize
9.9MB

Download
memory/2764-8-0x0000000001E10000-0x0000000001E18000-memory.dmp

Filesize
32KB

Download
memory/2764-7-0x000000001B5F0000-0x000000001B8D2000-memory.dmp

Filesize
2.9MB

Download