umbral | 3df7f52703498423053930ac726878d23436a8579ed46ef247391c2b2536c596

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
11-12-2024 21:00

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General

Target

tempspoofer.exe
Size

231KB
MD5

32e16912b2393c29fe60bbd22ae78e48
SHA1

cc08bc0e843139864445f703dba130956c605be0
SHA256

3df7f52703498423053930ac726878d23436a8579ed46ef247391c2b2536c596
SHA512

f70da345c4345293b87a8b5f49d419b1cfd53e1dc9e30f8d50d97a2d6d84fb55356acdabd0df828ab57a22add86786207624048afd490b196ee9f05d6462a340
SSDEEP

6144:RloZMMrIkd8g+EtXHkv/iD4oxXVoOJBiPHaIJtME/lb8e1mBi:joZbL+EP8oxXVoOJBiPHaIJtMCH

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/860-1-0x0000018831D80000-0x0000018831DC0000-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 3 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2976	powershell.exe
4512	powershell.exe
4848	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	tempspoofer.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
19	discord.com
20	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
12	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
3496	PING.EXE
4800	cmd.exe

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2368	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3496	PING.EXE

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
860	tempspoofer.exe
4848	powershell.exe
4848	powershell.exe
2976	powershell.exe
2976	powershell.exe
4512	powershell.exe
4512	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	860	tempspoofer.exe
Token: SeIncreaseQuotaPrivilege	2908	wmic.exe
Token: SeSecurityPrivilege	2908	wmic.exe
Token: SeTakeOwnershipPrivilege	2908	wmic.exe
Token: SeLoadDriverPrivilege	2908	wmic.exe
Token: SeSystemProfilePrivilege	2908	wmic.exe
Token: SeSystemtimePrivilege	2908	wmic.exe
Token: SeProfSingleProcessPrivilege	2908	wmic.exe
Token: SeIncBasePriorityPrivilege	2908	wmic.exe
Token: SeCreatePagefilePrivilege	2908	wmic.exe
Token: SeBackupPrivilege	2908	wmic.exe
Token: SeRestorePrivilege	2908	wmic.exe
Token: SeShutdownPrivilege	2908	wmic.exe
Token: SeDebugPrivilege	2908	wmic.exe
Token: SeSystemEnvironmentPrivilege	2908	wmic.exe
Token: SeRemoteShutdownPrivilege	2908	wmic.exe
Token: SeUndockPrivilege	2908	wmic.exe
Token: SeManageVolumePrivilege	2908	wmic.exe
Token: 33	2908	wmic.exe
Token: 34	2908	wmic.exe
Token: 35	2908	wmic.exe
Token: 36	2908	wmic.exe
Token: SeIncreaseQuotaPrivilege	2908	wmic.exe
Token: SeSecurityPrivilege	2908	wmic.exe
Token: SeTakeOwnershipPrivilege	2908	wmic.exe
Token: SeLoadDriverPrivilege	2908	wmic.exe
Token: SeSystemProfilePrivilege	2908	wmic.exe
Token: SeSystemtimePrivilege	2908	wmic.exe
Token: SeProfSingleProcessPrivilege	2908	wmic.exe
Token: SeIncBasePriorityPrivilege	2908	wmic.exe
Token: SeCreatePagefilePrivilege	2908	wmic.exe
Token: SeBackupPrivilege	2908	wmic.exe
Token: SeRestorePrivilege	2908	wmic.exe
Token: SeShutdownPrivilege	2908	wmic.exe
Token: SeDebugPrivilege	2908	wmic.exe
Token: SeSystemEnvironmentPrivilege	2908	wmic.exe
Token: SeRemoteShutdownPrivilege	2908	wmic.exe
Token: SeUndockPrivilege	2908	wmic.exe
Token: SeManageVolumePrivilege	2908	wmic.exe
Token: 33	2908	wmic.exe
Token: 34	2908	wmic.exe
Token: 35	2908	wmic.exe
Token: 36	2908	wmic.exe
Token: SeDebugPrivilege	4848	powershell.exe
Token: SeDebugPrivilege	2976	powershell.exe
Token: SeIncreaseQuotaPrivilege	4508	wmic.exe
Token: SeSecurityPrivilege	4508	wmic.exe
Token: SeTakeOwnershipPrivilege	4508	wmic.exe
Token: SeLoadDriverPrivilege	4508	wmic.exe
Token: SeSystemProfilePrivilege	4508	wmic.exe
Token: SeSystemtimePrivilege	4508	wmic.exe
Token: SeProfSingleProcessPrivilege	4508	wmic.exe
Token: SeIncBasePriorityPrivilege	4508	wmic.exe
Token: SeCreatePagefilePrivilege	4508	wmic.exe
Token: SeBackupPrivilege	4508	wmic.exe
Token: SeRestorePrivilege	4508	wmic.exe
Token: SeShutdownPrivilege	4508	wmic.exe
Token: SeDebugPrivilege	4508	wmic.exe
Token: SeSystemEnvironmentPrivilege	4508	wmic.exe
Token: SeRemoteShutdownPrivilege	4508	wmic.exe
Token: SeUndockPrivilege	4508	wmic.exe
Token: SeManageVolumePrivilege	4508	wmic.exe
Token: 33	4508	wmic.exe
Token: 34	4508	wmic.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 860 wrote to memory of 2908	860	tempspoofer.exe	82
PID 860 wrote to memory of 2908	860	tempspoofer.exe	82
PID 860 wrote to memory of 800	860	tempspoofer.exe	85
PID 860 wrote to memory of 800	860	tempspoofer.exe	85
PID 860 wrote to memory of 4848	860	tempspoofer.exe	87
PID 860 wrote to memory of 4848	860	tempspoofer.exe	87
PID 860 wrote to memory of 2976	860	tempspoofer.exe	89
PID 860 wrote to memory of 2976	860	tempspoofer.exe	89
PID 860 wrote to memory of 4508	860	tempspoofer.exe	91
PID 860 wrote to memory of 4508	860	tempspoofer.exe	91
PID 860 wrote to memory of 1048	860	tempspoofer.exe	93
PID 860 wrote to memory of 1048	860	tempspoofer.exe	93
PID 860 wrote to memory of 2884	860	tempspoofer.exe	95
PID 860 wrote to memory of 2884	860	tempspoofer.exe	95
PID 860 wrote to memory of 4512	860	tempspoofer.exe	97
PID 860 wrote to memory of 4512	860	tempspoofer.exe	97
PID 860 wrote to memory of 2368	860	tempspoofer.exe	99
PID 860 wrote to memory of 2368	860	tempspoofer.exe	99
PID 860 wrote to memory of 4800	860	tempspoofer.exe	107
PID 860 wrote to memory of 4800	860	tempspoofer.exe	107
PID 4800 wrote to memory of 3496	4800	cmd.exe	109
PID 4800 wrote to memory of 3496	4800	cmd.exe	109

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
800	attrib.exe

C:\Users\Admin\AppData\Local\Temp\tempspoofer.exe
"C:\Users\Admin\AppData\Local\Temp\tempspoofer.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:860
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2908
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\tempspoofer.exe"
  2⤵
  - Views/modifies file attributes
  PID:800
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\tempspoofer.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4848
- 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:2976
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4508
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1048
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2884
- 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:4512
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2368
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\tempspoofer.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4800
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:3496

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
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
948B

MD5
1a58f982c18490e622e00d4eb75ace5a

SHA1
60c30527b74659ecf09089a5a7c02a1df9a71b65

SHA256
4b7f800c0dea209162cc86627983993127eb20e3f8616646c41cb3ce15d9b39d

SHA512
ddab516a967783c5951717853aa5b3ef6dd5b442db50092888b2e7f3179fc68120fcde69a08d6ab280740eaadb6eadfc758c3118b52706f869e48ac1aebda480

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_pidb2l45.2bf.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/860-51-0x000001884C580000-0x000001884C592000-memory.dmp

Filesize
72KB

Download
memory/860-50-0x000001884C210000-0x000001884C21A000-memory.dmp

Filesize
40KB

Download
memory/860-73-0x00007FF8CE2F0000-0x00007FF8CEDB1000-memory.dmp

Filesize
10.8MB

Download
memory/860-68-0x00007FF8CE2F0000-0x00007FF8CEDB1000-memory.dmp

Filesize
10.8MB

Download
memory/860-67-0x00007FF8CE2F3000-0x00007FF8CE2F5000-memory.dmp

Filesize
8KB

Download
memory/860-1-0x0000018831D80000-0x0000018831DC0000-memory.dmp

Filesize
256KB

Download
memory/860-2-0x00007FF8CE2F0000-0x00007FF8CEDB1000-memory.dmp

Filesize
10.8MB

Download
memory/860-33-0x000001884C500000-0x000001884C576000-memory.dmp

Filesize
472KB

Download
memory/860-34-0x000001884C480000-0x000001884C4D0000-memory.dmp

Filesize
320KB

Download
memory/860-35-0x000001884C1F0000-0x000001884C20E000-memory.dmp

Filesize
120KB

Download
memory/860-0-0x00007FF8CE2F3000-0x00007FF8CE2F5000-memory.dmp

Filesize
8KB

Download
memory/4848-3-0x00007FF8CE2F0000-0x00007FF8CEDB1000-memory.dmp

Filesize
10.8MB

Download
memory/4848-13-0x0000026FB3320000-0x0000026FB3342000-memory.dmp

Filesize
136KB

Download
memory/4848-18-0x00007FF8CE2F0000-0x00007FF8CEDB1000-memory.dmp

Filesize
10.8MB

Download
memory/4848-15-0x00007FF8CE2F0000-0x00007FF8CEDB1000-memory.dmp

Filesize
10.8MB

Download
memory/4848-14-0x00007FF8CE2F0000-0x00007FF8CEDB1000-memory.dmp

Filesize
10.8MB

Download