umbral | ef28a317d8c84f3dafac9ad461c151f43bbc65725b119cb1ed260ae174a1c10d

Analysis

max time kernel
91s
max time network
100s
platform
windows11-21h2_x64
resource
win11-20240611-en
resource tags

arch:x64arch:x86image:win11-20240611-enlocale:en-usos:windows11-21h2-x64system
submitted
23-06-2024 11:58

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General

Target

Launcher.exe
Size

494KB
MD5

f413147ade94b156ed491f72d3a29600
SHA1

2b2dab17abc0de203a31d2feaffe516703f3bcf2
SHA256

ef28a317d8c84f3dafac9ad461c151f43bbc65725b119cb1ed260ae174a1c10d
SHA512

9d7c364bded59601a09bfb2f1c0e6153447a358e7a59820dd2c28c2e4d6918037f0f5dbf332087425870400ec60e7a6f494c37520dca78cfe2830b36c4cf4d7b
SSDEEP

12288:9oZtL+EP8qC4koOJBiHHaIJtM329DhA/Nfg:LI8Z4koOJBiHHaIJtM3wlA/Nfg

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/4712-1-0x000002BB249E0000-0x000002BB24A62000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2568	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	Launcher.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
1	discord.com
5	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
1	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2388	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1916	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4712	Launcher.exe
2568	powershell.exe
2568	powershell.exe
4500	powershell.exe
4500	powershell.exe
1500	powershell.exe
1500	powershell.exe
1084	powershell.exe
1084	powershell.exe
1240	powershell.exe
1240	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4712	Launcher.exe
Token: SeIncreaseQuotaPrivilege	3880	wmic.exe
Token: SeSecurityPrivilege	3880	wmic.exe
Token: SeTakeOwnershipPrivilege	3880	wmic.exe
Token: SeLoadDriverPrivilege	3880	wmic.exe
Token: SeSystemProfilePrivilege	3880	wmic.exe
Token: SeSystemtimePrivilege	3880	wmic.exe
Token: SeProfSingleProcessPrivilege	3880	wmic.exe
Token: SeIncBasePriorityPrivilege	3880	wmic.exe
Token: SeCreatePagefilePrivilege	3880	wmic.exe
Token: SeBackupPrivilege	3880	wmic.exe
Token: SeRestorePrivilege	3880	wmic.exe
Token: SeShutdownPrivilege	3880	wmic.exe
Token: SeDebugPrivilege	3880	wmic.exe
Token: SeSystemEnvironmentPrivilege	3880	wmic.exe
Token: SeRemoteShutdownPrivilege	3880	wmic.exe
Token: SeUndockPrivilege	3880	wmic.exe
Token: SeManageVolumePrivilege	3880	wmic.exe
Token: 33	3880	wmic.exe
Token: 34	3880	wmic.exe
Token: 35	3880	wmic.exe
Token: 36	3880	wmic.exe
Token: SeIncreaseQuotaPrivilege	3880	wmic.exe
Token: SeSecurityPrivilege	3880	wmic.exe
Token: SeTakeOwnershipPrivilege	3880	wmic.exe
Token: SeLoadDriverPrivilege	3880	wmic.exe
Token: SeSystemProfilePrivilege	3880	wmic.exe
Token: SeSystemtimePrivilege	3880	wmic.exe
Token: SeProfSingleProcessPrivilege	3880	wmic.exe
Token: SeIncBasePriorityPrivilege	3880	wmic.exe
Token: SeCreatePagefilePrivilege	3880	wmic.exe
Token: SeBackupPrivilege	3880	wmic.exe
Token: SeRestorePrivilege	3880	wmic.exe
Token: SeShutdownPrivilege	3880	wmic.exe
Token: SeDebugPrivilege	3880	wmic.exe
Token: SeSystemEnvironmentPrivilege	3880	wmic.exe
Token: SeRemoteShutdownPrivilege	3880	wmic.exe
Token: SeUndockPrivilege	3880	wmic.exe
Token: SeManageVolumePrivilege	3880	wmic.exe
Token: 33	3880	wmic.exe
Token: 34	3880	wmic.exe
Token: 35	3880	wmic.exe
Token: 36	3880	wmic.exe
Token: SeDebugPrivilege	2568	powershell.exe
Token: SeDebugPrivilege	4500	powershell.exe
Token: SeDebugPrivilege	1500	powershell.exe
Token: SeDebugPrivilege	1084	powershell.exe
Token: SeIncreaseQuotaPrivilege	4156	wmic.exe
Token: SeSecurityPrivilege	4156	wmic.exe
Token: SeTakeOwnershipPrivilege	4156	wmic.exe
Token: SeLoadDriverPrivilege	4156	wmic.exe
Token: SeSystemProfilePrivilege	4156	wmic.exe
Token: SeSystemtimePrivilege	4156	wmic.exe
Token: SeProfSingleProcessPrivilege	4156	wmic.exe
Token: SeIncBasePriorityPrivilege	4156	wmic.exe
Token: SeCreatePagefilePrivilege	4156	wmic.exe
Token: SeBackupPrivilege	4156	wmic.exe
Token: SeRestorePrivilege	4156	wmic.exe
Token: SeShutdownPrivilege	4156	wmic.exe
Token: SeDebugPrivilege	4156	wmic.exe
Token: SeSystemEnvironmentPrivilege	4156	wmic.exe
Token: SeRemoteShutdownPrivilege	4156	wmic.exe
Token: SeUndockPrivilege	4156	wmic.exe
Token: SeManageVolumePrivilege	4156	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4712 wrote to memory of 3880	4712	Launcher.exe	80
PID 4712 wrote to memory of 3880	4712	Launcher.exe	80
PID 4712 wrote to memory of 4920	4712	Launcher.exe	84
PID 4712 wrote to memory of 4920	4712	Launcher.exe	84
PID 4712 wrote to memory of 2568	4712	Launcher.exe	86
PID 4712 wrote to memory of 2568	4712	Launcher.exe	86
PID 4712 wrote to memory of 4500	4712	Launcher.exe	89
PID 4712 wrote to memory of 4500	4712	Launcher.exe	89
PID 4712 wrote to memory of 1500	4712	Launcher.exe	91
PID 4712 wrote to memory of 1500	4712	Launcher.exe	91
PID 4712 wrote to memory of 1084	4712	Launcher.exe	93
PID 4712 wrote to memory of 1084	4712	Launcher.exe	93
PID 4712 wrote to memory of 4156	4712	Launcher.exe	95
PID 4712 wrote to memory of 4156	4712	Launcher.exe	95
PID 4712 wrote to memory of 380	4712	Launcher.exe	97
PID 4712 wrote to memory of 380	4712	Launcher.exe	97
PID 4712 wrote to memory of 4032	4712	Launcher.exe	99
PID 4712 wrote to memory of 4032	4712	Launcher.exe	99
PID 4712 wrote to memory of 1240	4712	Launcher.exe	101
PID 4712 wrote to memory of 1240	4712	Launcher.exe	101
PID 4712 wrote to memory of 2388	4712	Launcher.exe	103
PID 4712 wrote to memory of 2388	4712	Launcher.exe	103
PID 4712 wrote to memory of 3836	4712	Launcher.exe	105
PID 4712 wrote to memory of 3836	4712	Launcher.exe	105
PID 3836 wrote to memory of 1916	3836	cmd.exe	107
PID 3836 wrote to memory of 1916	3836	cmd.exe	107

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4920	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Launcher.exe
"C:\Users\Admin\AppData\Local\Temp\Launcher.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4712
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3880
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Launcher.exe"
  2⤵
  - Views/modifies file attributes
  PID:4920
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Launcher.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2568
- 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⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4500
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1500
- 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:1084
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4156
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:380
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4032
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:1240
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2388
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Launcher.exe" && pause
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3836
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:1916

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

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Remote System Discovery

T1018

System Information Discovery

T1082

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
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

Filesize
944B

MD5
aa4f31835d07347297d35862c9045f4a

SHA1
83e728008935d30f98e5480fba4fbccf10cefb05

SHA256
99c83bc5c531e49d4240700142f3425aba74e18ebcc23556be32238ffde9cce0

SHA512
ec3a4bee8335007b8753ae8ac42287f2b3bcbb258f7fc3fb15c9f8d3e611cb9bf6ae2d3034953286a34f753e9ec33f7495e064bab0e8c7fcedd75d6e5eb66629

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

Filesize
948B

MD5
6bddc96a32b9ed8fc70b141ccf4a39b2

SHA1
0f33c0699da40a5eadcec646791cf21cdb0dd7c6

SHA256
cb3853abe77eb0da8a1caccb49e97a573b6f35570722eb759116a645d724c132

SHA512
e41f1597b4129b759e4199db195df1c24e47cc47dc9850fab2d48e44bc3d37dc3658fbfbb62332a0b93c552587d7fab09de1634f605faa2209b8470c2a6eaca6

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

Filesize
1KB

MD5
7332074ae2b01262736b6fbd9e100dac

SHA1
22f992165065107cc9417fa4117240d84414a13c

SHA256
baea84fda6c1f13090b8cbd91c920848946f10ce155ef31a1df4cd453ee7e4aa

SHA512
4ae6f0e012c31ac1fc2ff4a8877ce2b4667c45b6e651de798318a39a2b6fd39a6f72dffa8b0b89b7a045a27d724d195656faa25a9fec79b22f37ddebb5d22da2

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

Filesize
1KB

MD5
d6d65459c4042d1f234aa663336114ab

SHA1
3eb63fb84b26c4ff8573039035f2dfd10fd410a4

SHA256
1b099a8a877af813ab178c4a2a0bebb0ab60a4da9e27f275cf4711dd648dab02

SHA512
56f54bdfc5352aa06dbf5b73bfa6139a5711599cdc2f904e85121b2b95b204e5f7bf19bc674174ae7236c35d41781d09463c1e9605ea24ff78772ec49fbef114

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kx1bpdfb.fxu.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2568-6-0x0000014A6A370000-0x0000014A6A392000-memory.dmp

Filesize
136KB

Download
memory/2568-13-0x00007FFF45B70000-0x00007FFF46632000-memory.dmp

Filesize
10.8MB

Download
memory/2568-14-0x00007FFF45B70000-0x00007FFF46632000-memory.dmp

Filesize
10.8MB

Download
memory/2568-17-0x00007FFF45B70000-0x00007FFF46632000-memory.dmp

Filesize
10.8MB

Download
memory/2568-3-0x00007FFF45B70000-0x00007FFF46632000-memory.dmp

Filesize
10.8MB

Download
memory/4712-32-0x000002BB3F320000-0x000002BB3F370000-memory.dmp

Filesize
320KB

Download
memory/4712-31-0x000002BB3F200000-0x000002BB3F276000-memory.dmp

Filesize
472KB

Download
memory/4712-33-0x000002BB3F170000-0x000002BB3F18E000-memory.dmp

Filesize
120KB

Download
memory/4712-1-0x000002BB249E0000-0x000002BB24A62000-memory.dmp

Filesize
520KB

Download
memory/4712-0-0x00007FFF45B73000-0x00007FFF45B75000-memory.dmp

Filesize
8KB

Download
memory/4712-68-0x000002BB3F1B0000-0x000002BB3F1BA000-memory.dmp

Filesize
40KB

Download
memory/4712-69-0x000002BB3F1E0000-0x000002BB3F1F2000-memory.dmp

Filesize
72KB

Download
memory/4712-2-0x00007FFF45B70000-0x00007FFF46632000-memory.dmp

Filesize
10.8MB

Download
memory/4712-88-0x00007FFF45B70000-0x00007FFF46632000-memory.dmp

Filesize
10.8MB

Download