umbral | 7e0b011691401cfc5a7baf2ec11766fc3556f9ec3c30ad58f321d0aa61dc6f1f

Analysis

max time kernel
16s
max time network
18s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
18-05-2024 17:36

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General

Target

Roblox Executor.exe
Size

231KB
MD5

5b89a3d1ad450da99b67aaa3317cefaa
SHA1

f7256fd6c764d20859b44f9d956a0bd11a2e47a4
SHA256

7e0b011691401cfc5a7baf2ec11766fc3556f9ec3c30ad58f321d0aa61dc6f1f
SHA512

ba3cc155768e48af1add8ffc43fc4e32d0580feaba50f6e621208a83a508a64f54fa4109d907970c24129c20fef92315a536a77b18ad34d23d77901b3b62f9de
SSDEEP

6144:xloZMNrIkd8g+EtXHkv/iD4p0edCg/7IUR0STTKhqb8e1mxQi:DoZmL+EP8p0edCg/7IUR0STTKgE

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/4356-0-0x00000108386B0000-0x00000108386F0000-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
1352	powershell.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
24	discord.com
25	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
17	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4012	wmic.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
1352	powershell.exe
1352	powershell.exe
3304	powershell.exe
3304	powershell.exe
3476	powershell.exe
3476	powershell.exe
3000	powershell.exe
3000	powershell.exe
4412	powershell.exe
4412	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4356	Roblox Executor.exe
Token: SeDebugPrivilege	1352	powershell.exe
Token: SeDebugPrivilege	3304	powershell.exe
Token: SeDebugPrivilege	3476	powershell.exe
Token: SeDebugPrivilege	3000	powershell.exe
Token: SeIncreaseQuotaPrivilege	868	wmic.exe
Token: SeSecurityPrivilege	868	wmic.exe
Token: SeTakeOwnershipPrivilege	868	wmic.exe
Token: SeLoadDriverPrivilege	868	wmic.exe
Token: SeSystemProfilePrivilege	868	wmic.exe
Token: SeSystemtimePrivilege	868	wmic.exe
Token: SeProfSingleProcessPrivilege	868	wmic.exe
Token: SeIncBasePriorityPrivilege	868	wmic.exe
Token: SeCreatePagefilePrivilege	868	wmic.exe
Token: SeBackupPrivilege	868	wmic.exe
Token: SeRestorePrivilege	868	wmic.exe
Token: SeShutdownPrivilege	868	wmic.exe
Token: SeDebugPrivilege	868	wmic.exe
Token: SeSystemEnvironmentPrivilege	868	wmic.exe
Token: SeRemoteShutdownPrivilege	868	wmic.exe
Token: SeUndockPrivilege	868	wmic.exe
Token: SeManageVolumePrivilege	868	wmic.exe
Token: 33	868	wmic.exe
Token: 34	868	wmic.exe
Token: 35	868	wmic.exe
Token: 36	868	wmic.exe
Token: SeIncreaseQuotaPrivilege	868	wmic.exe
Token: SeSecurityPrivilege	868	wmic.exe
Token: SeTakeOwnershipPrivilege	868	wmic.exe
Token: SeLoadDriverPrivilege	868	wmic.exe
Token: SeSystemProfilePrivilege	868	wmic.exe
Token: SeSystemtimePrivilege	868	wmic.exe
Token: SeProfSingleProcessPrivilege	868	wmic.exe
Token: SeIncBasePriorityPrivilege	868	wmic.exe
Token: SeCreatePagefilePrivilege	868	wmic.exe
Token: SeBackupPrivilege	868	wmic.exe
Token: SeRestorePrivilege	868	wmic.exe
Token: SeShutdownPrivilege	868	wmic.exe
Token: SeDebugPrivilege	868	wmic.exe
Token: SeSystemEnvironmentPrivilege	868	wmic.exe
Token: SeRemoteShutdownPrivilege	868	wmic.exe
Token: SeUndockPrivilege	868	wmic.exe
Token: SeManageVolumePrivilege	868	wmic.exe
Token: 33	868	wmic.exe
Token: 34	868	wmic.exe
Token: 35	868	wmic.exe
Token: 36	868	wmic.exe
Token: SeIncreaseQuotaPrivilege	4736	wmic.exe
Token: SeSecurityPrivilege	4736	wmic.exe
Token: SeTakeOwnershipPrivilege	4736	wmic.exe
Token: SeLoadDriverPrivilege	4736	wmic.exe
Token: SeSystemProfilePrivilege	4736	wmic.exe
Token: SeSystemtimePrivilege	4736	wmic.exe
Token: SeProfSingleProcessPrivilege	4736	wmic.exe
Token: SeIncBasePriorityPrivilege	4736	wmic.exe
Token: SeCreatePagefilePrivilege	4736	wmic.exe
Token: SeBackupPrivilege	4736	wmic.exe
Token: SeRestorePrivilege	4736	wmic.exe
Token: SeShutdownPrivilege	4736	wmic.exe
Token: SeDebugPrivilege	4736	wmic.exe
Token: SeSystemEnvironmentPrivilege	4736	wmic.exe
Token: SeRemoteShutdownPrivilege	4736	wmic.exe
Token: SeUndockPrivilege	4736	wmic.exe
Token: SeManageVolumePrivilege	4736	wmic.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4356 wrote to memory of 1352	4356	Roblox Executor.exe	82
PID 4356 wrote to memory of 1352	4356	Roblox Executor.exe	82
PID 4356 wrote to memory of 3304	4356	Roblox Executor.exe	84
PID 4356 wrote to memory of 3304	4356	Roblox Executor.exe	84
PID 4356 wrote to memory of 3476	4356	Roblox Executor.exe	87
PID 4356 wrote to memory of 3476	4356	Roblox Executor.exe	87
PID 4356 wrote to memory of 3000	4356	Roblox Executor.exe	90
PID 4356 wrote to memory of 3000	4356	Roblox Executor.exe	90
PID 4356 wrote to memory of 868	4356	Roblox Executor.exe	93
PID 4356 wrote to memory of 868	4356	Roblox Executor.exe	93
PID 4356 wrote to memory of 4736	4356	Roblox Executor.exe	96
PID 4356 wrote to memory of 4736	4356	Roblox Executor.exe	96
PID 4356 wrote to memory of 2568	4356	Roblox Executor.exe	98
PID 4356 wrote to memory of 2568	4356	Roblox Executor.exe	98
PID 4356 wrote to memory of 4412	4356	Roblox Executor.exe	100
PID 4356 wrote to memory of 4412	4356	Roblox Executor.exe	100
PID 4356 wrote to memory of 4012	4356	Roblox Executor.exe	102
PID 4356 wrote to memory of 4012	4356	Roblox Executor.exe	102

C:\Users\Admin\AppData\Local\Temp\Roblox Executor.exe
"C:\Users\Admin\AppData\Local\Temp\Roblox Executor.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4356
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Roblox Executor.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1352
- 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:3304
- 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:3476
- 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:3000
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:868
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4736
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2568
- 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:4412
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4012

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

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
6d3e9c29fe44e90aae6ed30ccf799ca8

SHA1
c7974ef72264bbdf13a2793ccf1aed11bc565dce

SHA256
2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

SHA512
60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

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

Filesize
948B

MD5
ab1214368d16125b5f97e5014a91cfd8

SHA1
73ecf983976ebaa0c27c6bddc8d956b27c934197

SHA256
62030acdc8413f7658ed0e27c658ef635766c971862f777bea9dcb4a42c83955

SHA512
7e9d0aa20c3ee9674e09b4b6ac0f95955ba047f8714d8d26915feb2e242f011af1fa5168aa18292f183dab46647fccd182d2ca02029fe6ffd3213d167c6cb440

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

Filesize
1KB

MD5
88be3bc8a7f90e3953298c0fdbec4d72

SHA1
f4969784ad421cc80ef45608727aacd0f6bf2e4b

SHA256
533c8470b41084e40c5660569ebbdb7496520d449629a235e8053e84025f348a

SHA512
4fce64e2dacddbc03314048fef1ce356ee2647c14733da121c23c65507eeb8d721d6b690ad5463319b364dc4fa95904ad6ab096907f32918e3406ef438a6ef7c

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

Filesize
1KB

MD5
51c1a86aa41cec8f3e4f182946bdcb06

SHA1
144e53419587ec3d71d9114414bd187e8be0ef9a

SHA256
82777c72c215e8b1253ec2ec6fcc9f14fb49ad55e441f8803cffd8122755d27e

SHA512
401610dfb65b843f5961d59e7f728af41ce33369bd65f0e7707db1554509909803011493c263b88aefea62f901c9ac3bc8994f2bbd7f996dd3d88431d6d4ef5d

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qjxydbkf.yoe.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1352-13-0x00007FFED0E00000-0x00007FFED18C1000-memory.dmp

Filesize
10.8MB

Download
memory/1352-12-0x00000202DCC20000-0x00000202DCC42000-memory.dmp

Filesize
136KB

Download
memory/1352-18-0x00007FFED0E00000-0x00007FFED18C1000-memory.dmp

Filesize
10.8MB

Download
memory/1352-14-0x00007FFED0E00000-0x00007FFED18C1000-memory.dmp

Filesize
10.8MB

Download
memory/1352-15-0x00007FFED0E00000-0x00007FFED18C1000-memory.dmp

Filesize
10.8MB

Download
memory/3000-69-0x000001E0AF260000-0x000001E0AF47C000-memory.dmp

Filesize
2.1MB

Download
memory/3476-57-0x000002721C680000-0x000002721C89C000-memory.dmp

Filesize
2.1MB

Download
memory/4356-31-0x0000010852DE0000-0x0000010852E56000-memory.dmp

Filesize
472KB

Download
memory/4356-33-0x0000010852DC0000-0x0000010852DDE000-memory.dmp

Filesize
120KB

Download
memory/4356-32-0x0000010852E60000-0x0000010852EB0000-memory.dmp

Filesize
320KB

Download
memory/4356-2-0x00007FFED0E00000-0x00007FFED18C1000-memory.dmp

Filesize
10.8MB

Download
memory/4356-1-0x00007FFED0E03000-0x00007FFED0E05000-memory.dmp

Filesize
8KB

Download
memory/4356-71-0x0000010853060000-0x000001085306A000-memory.dmp

Filesize
40KB

Download
memory/4356-72-0x00000108530A0000-0x00000108530B2000-memory.dmp

Filesize
72KB

Download
memory/4356-0-0x00000108386B0000-0x00000108386F0000-memory.dmp

Filesize
256KB

Download
memory/4356-90-0x0000010852EB0000-0x0000010853059000-memory.dmp

Filesize
1.7MB

Download
memory/4356-91-0x00007FFED0E00000-0x00007FFED18C1000-memory.dmp

Filesize
10.8MB

Download