umbral | b4b6f0ce548f5ec6207bf0f8350011f953ef5d4011ff288ef5e2e0376cc18ded

Analysis

max time kernel
118s
max time network
121s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
13-11-2024 20:45

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General

Target

Perm Spoofer/dumped files/fixserials.exe
Size

229KB
MD5

9252505656ab18c34d4ecff6a7f86263
SHA1

dfa01cbe5c99fbf67a5063f99c67669382e43356
SHA256

78da8433390c0aaf2e5f748ff266bacad23fe9d05b1834eabceeb6ad69859589
SHA512

5e270de9982c3137c16e32fa4c88f9a414893c623fbcdd5cb2f3ff9bbf82eac82bb8d01100d60ea8633da875b36df39d657a9090e393d4fdf717575821bce8a5
SSDEEP

6144:lloZMcrIkd8g+EtXHkv/iD4l6qZEKtFu9r20VJgU8b8e1mbDi:noZrL+EP8l6qZEKtFu9r20VJgZd

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral26/memory/2884-1-0x0000000000390000-0x00000000003D0000-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

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
1864	powershell.exe
2052	powershell.exe
1428	powershell.exe
2692	powershell.exe

Deletes itself 1 IoCs

pid	Process
2632	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
2632	cmd.exe
2284	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2648	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2284	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2884	fixserials.exe
2692	powershell.exe
1864	powershell.exe
2052	powershell.exe
2656	powershell.exe
1428	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2884	fixserials.exe
Token: SeIncreaseQuotaPrivilege	2940	wmic.exe
Token: SeSecurityPrivilege	2940	wmic.exe
Token: SeTakeOwnershipPrivilege	2940	wmic.exe
Token: SeLoadDriverPrivilege	2940	wmic.exe
Token: SeSystemProfilePrivilege	2940	wmic.exe
Token: SeSystemtimePrivilege	2940	wmic.exe
Token: SeProfSingleProcessPrivilege	2940	wmic.exe
Token: SeIncBasePriorityPrivilege	2940	wmic.exe
Token: SeCreatePagefilePrivilege	2940	wmic.exe
Token: SeBackupPrivilege	2940	wmic.exe
Token: SeRestorePrivilege	2940	wmic.exe
Token: SeShutdownPrivilege	2940	wmic.exe
Token: SeDebugPrivilege	2940	wmic.exe
Token: SeSystemEnvironmentPrivilege	2940	wmic.exe
Token: SeRemoteShutdownPrivilege	2940	wmic.exe
Token: SeUndockPrivilege	2940	wmic.exe
Token: SeManageVolumePrivilege	2940	wmic.exe
Token: 33	2940	wmic.exe
Token: 34	2940	wmic.exe
Token: 35	2940	wmic.exe
Token: SeIncreaseQuotaPrivilege	2940	wmic.exe
Token: SeSecurityPrivilege	2940	wmic.exe
Token: SeTakeOwnershipPrivilege	2940	wmic.exe
Token: SeLoadDriverPrivilege	2940	wmic.exe
Token: SeSystemProfilePrivilege	2940	wmic.exe
Token: SeSystemtimePrivilege	2940	wmic.exe
Token: SeProfSingleProcessPrivilege	2940	wmic.exe
Token: SeIncBasePriorityPrivilege	2940	wmic.exe
Token: SeCreatePagefilePrivilege	2940	wmic.exe
Token: SeBackupPrivilege	2940	wmic.exe
Token: SeRestorePrivilege	2940	wmic.exe
Token: SeShutdownPrivilege	2940	wmic.exe
Token: SeDebugPrivilege	2940	wmic.exe
Token: SeSystemEnvironmentPrivilege	2940	wmic.exe
Token: SeRemoteShutdownPrivilege	2940	wmic.exe
Token: SeUndockPrivilege	2940	wmic.exe
Token: SeManageVolumePrivilege	2940	wmic.exe
Token: 33	2940	wmic.exe
Token: 34	2940	wmic.exe
Token: 35	2940	wmic.exe
Token: SeDebugPrivilege	2692	powershell.exe
Token: SeDebugPrivilege	1864	powershell.exe
Token: SeDebugPrivilege	2052	powershell.exe
Token: SeDebugPrivilege	2656	powershell.exe
Token: SeIncreaseQuotaPrivilege	3068	wmic.exe
Token: SeSecurityPrivilege	3068	wmic.exe
Token: SeTakeOwnershipPrivilege	3068	wmic.exe
Token: SeLoadDriverPrivilege	3068	wmic.exe
Token: SeSystemProfilePrivilege	3068	wmic.exe
Token: SeSystemtimePrivilege	3068	wmic.exe
Token: SeProfSingleProcessPrivilege	3068	wmic.exe
Token: SeIncBasePriorityPrivilege	3068	wmic.exe
Token: SeCreatePagefilePrivilege	3068	wmic.exe
Token: SeBackupPrivilege	3068	wmic.exe
Token: SeRestorePrivilege	3068	wmic.exe
Token: SeShutdownPrivilege	3068	wmic.exe
Token: SeDebugPrivilege	3068	wmic.exe
Token: SeSystemEnvironmentPrivilege	3068	wmic.exe
Token: SeRemoteShutdownPrivilege	3068	wmic.exe
Token: SeUndockPrivilege	3068	wmic.exe
Token: SeManageVolumePrivilege	3068	wmic.exe
Token: 33	3068	wmic.exe
Token: 34	3068	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2884 wrote to memory of 2940	2884	fixserials.exe	30
PID 2884 wrote to memory of 2940	2884	fixserials.exe	30
PID 2884 wrote to memory of 2940	2884	fixserials.exe	30
PID 2884 wrote to memory of 2976	2884	fixserials.exe	33
PID 2884 wrote to memory of 2976	2884	fixserials.exe	33
PID 2884 wrote to memory of 2976	2884	fixserials.exe	33
PID 2884 wrote to memory of 2692	2884	fixserials.exe	35
PID 2884 wrote to memory of 2692	2884	fixserials.exe	35
PID 2884 wrote to memory of 2692	2884	fixserials.exe	35
PID 2884 wrote to memory of 1864	2884	fixserials.exe	37
PID 2884 wrote to memory of 1864	2884	fixserials.exe	37
PID 2884 wrote to memory of 1864	2884	fixserials.exe	37
PID 2884 wrote to memory of 2052	2884	fixserials.exe	39
PID 2884 wrote to memory of 2052	2884	fixserials.exe	39
PID 2884 wrote to memory of 2052	2884	fixserials.exe	39
PID 2884 wrote to memory of 2656	2884	fixserials.exe	41
PID 2884 wrote to memory of 2656	2884	fixserials.exe	41
PID 2884 wrote to memory of 2656	2884	fixserials.exe	41
PID 2884 wrote to memory of 3068	2884	fixserials.exe	43
PID 2884 wrote to memory of 3068	2884	fixserials.exe	43
PID 2884 wrote to memory of 3068	2884	fixserials.exe	43
PID 2884 wrote to memory of 2424	2884	fixserials.exe	45
PID 2884 wrote to memory of 2424	2884	fixserials.exe	45
PID 2884 wrote to memory of 2424	2884	fixserials.exe	45
PID 2884 wrote to memory of 2304	2884	fixserials.exe	47
PID 2884 wrote to memory of 2304	2884	fixserials.exe	47
PID 2884 wrote to memory of 2304	2884	fixserials.exe	47
PID 2884 wrote to memory of 1428	2884	fixserials.exe	49
PID 2884 wrote to memory of 1428	2884	fixserials.exe	49
PID 2884 wrote to memory of 1428	2884	fixserials.exe	49
PID 2884 wrote to memory of 2648	2884	fixserials.exe	51
PID 2884 wrote to memory of 2648	2884	fixserials.exe	51
PID 2884 wrote to memory of 2648	2884	fixserials.exe	51
PID 2884 wrote to memory of 2632	2884	fixserials.exe	53
PID 2884 wrote to memory of 2632	2884	fixserials.exe	53
PID 2884 wrote to memory of 2632	2884	fixserials.exe	53
PID 2632 wrote to memory of 2284	2632	cmd.exe	55
PID 2632 wrote to memory of 2284	2632	cmd.exe	55
PID 2632 wrote to memory of 2284	2632	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2976	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Perm Spoofer\dumped files\fixserials.exe
"C:\Users\Admin\AppData\Local\Temp\Perm Spoofer\dumped files\fixserials.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2884
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2940
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Perm Spoofer\dumped files\fixserials.exe"
  2⤵
  - Views/modifies file attributes
  PID:2976
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Perm Spoofer\dumped files\fixserials.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2692
- 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:1864
- 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:2052
- 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:2656
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3068
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2424
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2304
- 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:1428
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2648
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Perm Spoofer\dumped files\fixserials.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2632
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2284

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
6101bb5e0396bf307d0d9aeadf7b1281

SHA1
0f6a4015b8f2f0e0bede7bd86726cb1d9706ae8e

SHA256
0b928217906dbd0c36f81954d1ab6a65a7d9e9d69199053b7e8463e6531c7466

SHA512
dba3f95bbf17cedc51ba8e8729a4a127658926c87655f36d5bde6f41fadac4d0af9a4a5a40c9031617c14490d411b13e78360a6a2487109d60b474ed16878c97

Download Submit
memory/1428-39-0x0000000001F70000-0x0000000001F78000-memory.dmp

Filesize
32KB

Download
memory/1864-14-0x000000001B760000-0x000000001BA42000-memory.dmp

Filesize
2.9MB

Download
memory/1864-15-0x0000000001E70000-0x0000000001E78000-memory.dmp

Filesize
32KB

Download
memory/2692-7-0x000000001B620000-0x000000001B902000-memory.dmp

Filesize
2.9MB

Download
memory/2692-8-0x0000000001F70000-0x0000000001F78000-memory.dmp

Filesize
32KB

Download
memory/2884-0-0x000007FEF5E33000-0x000007FEF5E34000-memory.dmp

Filesize
4KB

Download
memory/2884-1-0x0000000000390000-0x00000000003D0000-memory.dmp

Filesize
256KB

Download
memory/2884-2-0x000007FEF5E30000-0x000007FEF681C000-memory.dmp

Filesize
9.9MB

Download
memory/2884-43-0x000007FEF5E30000-0x000007FEF681C000-memory.dmp

Filesize
9.9MB

Download