umbral | 429170a034f165b7b9223205b04482ba8b1cc5582f9344bf70123c7e7e8e4c3e

Analysis

max time kernel
93s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
24-09-2024 19:48

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General

Target

freerobux.exe
Size

229KB
MD5

b994081ca7787fdf253902e28c1a5c47
SHA1

91c30f314dda937fac7b5133c4f378e6c2cd47ff
SHA256

429170a034f165b7b9223205b04482ba8b1cc5582f9344bf70123c7e7e8e4c3e
SHA512

17b80c2325c0e900fa1a2c026d8eba0c3985ce27bb71c4f226a6d52a3f0122e4ad969fb163d75ec435169ea12c8b9538777986ab2dc498e5529d94ce20d019d4
SSDEEP

6144:FloZMArIkd8g+EtXHkv/iD4vWEs9rI8jP67NokR37b8e1mAi:HoZHL+EP8vWEs9rI8jP67NokRv+

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/3548-1-0x000001CCD8F00000-0x000001CCD8F40000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer 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
5016	powershell.exe
2000	powershell.exe
4136	powershell.exe
4648	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	freerobux.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
20	discord.com
21	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
18	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3800	wmic.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
5016	powershell.exe
5016	powershell.exe
4136	powershell.exe
4136	powershell.exe
4648	powershell.exe
4648	powershell.exe
1836	powershell.exe
1836	powershell.exe
2000	powershell.exe
2000	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3548	freerobux.exe
Token: SeDebugPrivilege	5016	powershell.exe
Token: SeDebugPrivilege	4136	powershell.exe
Token: SeDebugPrivilege	4648	powershell.exe
Token: SeDebugPrivilege	1836	powershell.exe
Token: SeIncreaseQuotaPrivilege	1424	wmic.exe
Token: SeSecurityPrivilege	1424	wmic.exe
Token: SeTakeOwnershipPrivilege	1424	wmic.exe
Token: SeLoadDriverPrivilege	1424	wmic.exe
Token: SeSystemProfilePrivilege	1424	wmic.exe
Token: SeSystemtimePrivilege	1424	wmic.exe
Token: SeProfSingleProcessPrivilege	1424	wmic.exe
Token: SeIncBasePriorityPrivilege	1424	wmic.exe
Token: SeCreatePagefilePrivilege	1424	wmic.exe
Token: SeBackupPrivilege	1424	wmic.exe
Token: SeRestorePrivilege	1424	wmic.exe
Token: SeShutdownPrivilege	1424	wmic.exe
Token: SeDebugPrivilege	1424	wmic.exe
Token: SeSystemEnvironmentPrivilege	1424	wmic.exe
Token: SeRemoteShutdownPrivilege	1424	wmic.exe
Token: SeUndockPrivilege	1424	wmic.exe
Token: SeManageVolumePrivilege	1424	wmic.exe
Token: 33	1424	wmic.exe
Token: 34	1424	wmic.exe
Token: 35	1424	wmic.exe
Token: 36	1424	wmic.exe
Token: SeIncreaseQuotaPrivilege	1424	wmic.exe
Token: SeSecurityPrivilege	1424	wmic.exe
Token: SeTakeOwnershipPrivilege	1424	wmic.exe
Token: SeLoadDriverPrivilege	1424	wmic.exe
Token: SeSystemProfilePrivilege	1424	wmic.exe
Token: SeSystemtimePrivilege	1424	wmic.exe
Token: SeProfSingleProcessPrivilege	1424	wmic.exe
Token: SeIncBasePriorityPrivilege	1424	wmic.exe
Token: SeCreatePagefilePrivilege	1424	wmic.exe
Token: SeBackupPrivilege	1424	wmic.exe
Token: SeRestorePrivilege	1424	wmic.exe
Token: SeShutdownPrivilege	1424	wmic.exe
Token: SeDebugPrivilege	1424	wmic.exe
Token: SeSystemEnvironmentPrivilege	1424	wmic.exe
Token: SeRemoteShutdownPrivilege	1424	wmic.exe
Token: SeUndockPrivilege	1424	wmic.exe
Token: SeManageVolumePrivilege	1424	wmic.exe
Token: 33	1424	wmic.exe
Token: 34	1424	wmic.exe
Token: 35	1424	wmic.exe
Token: 36	1424	wmic.exe
Token: SeIncreaseQuotaPrivilege	4344	wmic.exe
Token: SeSecurityPrivilege	4344	wmic.exe
Token: SeTakeOwnershipPrivilege	4344	wmic.exe
Token: SeLoadDriverPrivilege	4344	wmic.exe
Token: SeSystemProfilePrivilege	4344	wmic.exe
Token: SeSystemtimePrivilege	4344	wmic.exe
Token: SeProfSingleProcessPrivilege	4344	wmic.exe
Token: SeIncBasePriorityPrivilege	4344	wmic.exe
Token: SeCreatePagefilePrivilege	4344	wmic.exe
Token: SeBackupPrivilege	4344	wmic.exe
Token: SeRestorePrivilege	4344	wmic.exe
Token: SeShutdownPrivilege	4344	wmic.exe
Token: SeDebugPrivilege	4344	wmic.exe
Token: SeSystemEnvironmentPrivilege	4344	wmic.exe
Token: SeRemoteShutdownPrivilege	4344	wmic.exe
Token: SeUndockPrivilege	4344	wmic.exe
Token: SeManageVolumePrivilege	4344	wmic.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 3548 wrote to memory of 5016	3548	freerobux.exe	82
PID 3548 wrote to memory of 5016	3548	freerobux.exe	82
PID 3548 wrote to memory of 4136	3548	freerobux.exe	84
PID 3548 wrote to memory of 4136	3548	freerobux.exe	84
PID 3548 wrote to memory of 4648	3548	freerobux.exe	86
PID 3548 wrote to memory of 4648	3548	freerobux.exe	86
PID 3548 wrote to memory of 1836	3548	freerobux.exe	88
PID 3548 wrote to memory of 1836	3548	freerobux.exe	88
PID 3548 wrote to memory of 1424	3548	freerobux.exe	90
PID 3548 wrote to memory of 1424	3548	freerobux.exe	90
PID 3548 wrote to memory of 4344	3548	freerobux.exe	93
PID 3548 wrote to memory of 4344	3548	freerobux.exe	93
PID 3548 wrote to memory of 796	3548	freerobux.exe	95
PID 3548 wrote to memory of 796	3548	freerobux.exe	95
PID 3548 wrote to memory of 2000	3548	freerobux.exe	97
PID 3548 wrote to memory of 2000	3548	freerobux.exe	97
PID 3548 wrote to memory of 3800	3548	freerobux.exe	99
PID 3548 wrote to memory of 3800	3548	freerobux.exe	99

C:\Users\Admin\AppData\Local\Temp\freerobux.exe
"C:\Users\Admin\AppData\Local\Temp\freerobux.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3548
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\freerobux.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5016
- 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:4136
- 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:4648
- 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:1836
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1424
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4344
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:796
- 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:2000
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3800

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

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

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
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
17d8127be94d3c1b6fcc9a4ed585003e

SHA1
789874fcc7c778c723f3e89822d8cc8750c6c4c8

SHA256
ea357ad1f95863b3618d31e5b0f90495331f64de2b784d9e185b48668c937a7b

SHA512
bb18b6d07d82227f5cfbe3eb460df79ec892c560ad2964dcd4782aa26336ae15059843bf46a739bdd4a4daa58057f99102531a756a1cf434ce6449b3cd35a98e

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

Filesize
1KB

MD5
548dd08570d121a65e82abb7171cae1c

SHA1
1a1b5084b3a78f3acd0d811cc79dbcac121217ab

SHA256
cdf17b8532ebcebac3cfe23954a30aa32edd268d040da79c82687e4ccb044adc

SHA512
37b98b09178b51eec9599af90d027d2f1028202efc1633047e16e41f1a95610984af5620baac07db085ccfcb96942aafffad17aa1f44f63233e83869dc9f697b

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

Filesize
1KB

MD5
92382908106bf04aac6575ae0e55073f

SHA1
b164dd606b60ada42fe843963f95e14e92d5d86a

SHA256
1332dc373efa610424b48ae9955247275f4f94cfeecec93a5121784ed8d6b3db

SHA512
d6ee3e3776f683b2a4eaf4fd92e2cd2b9412d85fb57556130d8cabf52e180fb17b5dcdfec9ccd0b3b80bed2816c0bd2d25de35580b859e7799b7cb61071edb3f

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qx43qosx.gy3.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3548-71-0x000001CCF35F0000-0x000001CCF35FA000-memory.dmp

Filesize
40KB

Download
memory/3548-35-0x000001CCF34B0000-0x000001CCF34CE000-memory.dmp

Filesize
120KB

Download
memory/3548-90-0x00007FFAEF170000-0x00007FFAEFC31000-memory.dmp

Filesize
10.8MB

Download
memory/3548-72-0x000001CCF3620000-0x000001CCF3632000-memory.dmp

Filesize
72KB

Download
memory/3548-2-0x00007FFAEF170000-0x00007FFAEFC31000-memory.dmp

Filesize
10.8MB

Download
memory/3548-33-0x000001CCF3670000-0x000001CCF36E6000-memory.dmp

Filesize
472KB

Download
memory/3548-34-0x000001CCF36F0000-0x000001CCF3740000-memory.dmp

Filesize
320KB

Download
memory/3548-0-0x00007FFAEF173000-0x00007FFAEF175000-memory.dmp

Filesize
8KB

Download
memory/3548-1-0x000001CCD8F00000-0x000001CCD8F40000-memory.dmp

Filesize
256KB

Download
memory/5016-15-0x00007FFAEF170000-0x00007FFAEFC31000-memory.dmp

Filesize
10.8MB

Download
memory/5016-14-0x00007FFAEF170000-0x00007FFAEFC31000-memory.dmp

Filesize
10.8MB

Download
memory/5016-9-0x00000189C75D0000-0x00000189C75F2000-memory.dmp

Filesize
136KB

Download
memory/5016-3-0x00007FFAEF170000-0x00007FFAEFC31000-memory.dmp

Filesize
10.8MB

Download
memory/5016-18-0x00007FFAEF170000-0x00007FFAEFC31000-memory.dmp

Filesize
10.8MB

Download