umbral | e620d6139593cb75beef54843dfca504b864f03a112bb1ece037ea2779a08452

Analysis

max time kernel
39s
max time network
37s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
01-07-2024 10:55

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General

Target

Test.exe
Size

494KB
MD5

d91cf2ea58f9f71046b8f55eb7032640
SHA1

649d5eff015dd35f3c29193bf2c4d86a9ad2517b
SHA256

e620d6139593cb75beef54843dfca504b864f03a112bb1ece037ea2779a08452
SHA512

518904cbeb378f122becc870f164643c2f0849f659b538462666158c0b0a151a5cd5f11213b84cdde3377d23d3f5275304cb7c47e408c18766749d00e31b8a9a
SSDEEP

12288:loZ0L+EP8xx7vKInDAmZMK7bCP/dDhA/Nfg:gI837vKInDAmZMK7bCPVlA/Nfg

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/1492-0-0x000001B9A28A0000-0x000001B9A2922000-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
2280	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	Test.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
25	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
6	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1920	wmic.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
1492	Test.exe
2280	powershell.exe
2280	powershell.exe
4384	powershell.exe
4384	powershell.exe
3640	powershell.exe
3640	powershell.exe
3860	powershell.exe
3860	powershell.exe
5092	powershell.exe
5092	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1492	Test.exe
Token: SeIncreaseQuotaPrivilege	4624	wmic.exe
Token: SeSecurityPrivilege	4624	wmic.exe
Token: SeTakeOwnershipPrivilege	4624	wmic.exe
Token: SeLoadDriverPrivilege	4624	wmic.exe
Token: SeSystemProfilePrivilege	4624	wmic.exe
Token: SeSystemtimePrivilege	4624	wmic.exe
Token: SeProfSingleProcessPrivilege	4624	wmic.exe
Token: SeIncBasePriorityPrivilege	4624	wmic.exe
Token: SeCreatePagefilePrivilege	4624	wmic.exe
Token: SeBackupPrivilege	4624	wmic.exe
Token: SeRestorePrivilege	4624	wmic.exe
Token: SeShutdownPrivilege	4624	wmic.exe
Token: SeDebugPrivilege	4624	wmic.exe
Token: SeSystemEnvironmentPrivilege	4624	wmic.exe
Token: SeRemoteShutdownPrivilege	4624	wmic.exe
Token: SeUndockPrivilege	4624	wmic.exe
Token: SeManageVolumePrivilege	4624	wmic.exe
Token: 33	4624	wmic.exe
Token: 34	4624	wmic.exe
Token: 35	4624	wmic.exe
Token: 36	4624	wmic.exe
Token: SeIncreaseQuotaPrivilege	4624	wmic.exe
Token: SeSecurityPrivilege	4624	wmic.exe
Token: SeTakeOwnershipPrivilege	4624	wmic.exe
Token: SeLoadDriverPrivilege	4624	wmic.exe
Token: SeSystemProfilePrivilege	4624	wmic.exe
Token: SeSystemtimePrivilege	4624	wmic.exe
Token: SeProfSingleProcessPrivilege	4624	wmic.exe
Token: SeIncBasePriorityPrivilege	4624	wmic.exe
Token: SeCreatePagefilePrivilege	4624	wmic.exe
Token: SeBackupPrivilege	4624	wmic.exe
Token: SeRestorePrivilege	4624	wmic.exe
Token: SeShutdownPrivilege	4624	wmic.exe
Token: SeDebugPrivilege	4624	wmic.exe
Token: SeSystemEnvironmentPrivilege	4624	wmic.exe
Token: SeRemoteShutdownPrivilege	4624	wmic.exe
Token: SeUndockPrivilege	4624	wmic.exe
Token: SeManageVolumePrivilege	4624	wmic.exe
Token: 33	4624	wmic.exe
Token: 34	4624	wmic.exe
Token: 35	4624	wmic.exe
Token: 36	4624	wmic.exe
Token: SeDebugPrivilege	2280	powershell.exe
Token: SeDebugPrivilege	4384	powershell.exe
Token: SeDebugPrivilege	3640	powershell.exe
Token: SeDebugPrivilege	3860	powershell.exe
Token: SeIncreaseQuotaPrivilege	4288	wmic.exe
Token: SeSecurityPrivilege	4288	wmic.exe
Token: SeTakeOwnershipPrivilege	4288	wmic.exe
Token: SeLoadDriverPrivilege	4288	wmic.exe
Token: SeSystemProfilePrivilege	4288	wmic.exe
Token: SeSystemtimePrivilege	4288	wmic.exe
Token: SeProfSingleProcessPrivilege	4288	wmic.exe
Token: SeIncBasePriorityPrivilege	4288	wmic.exe
Token: SeCreatePagefilePrivilege	4288	wmic.exe
Token: SeBackupPrivilege	4288	wmic.exe
Token: SeRestorePrivilege	4288	wmic.exe
Token: SeShutdownPrivilege	4288	wmic.exe
Token: SeDebugPrivilege	4288	wmic.exe
Token: SeSystemEnvironmentPrivilege	4288	wmic.exe
Token: SeRemoteShutdownPrivilege	4288	wmic.exe
Token: SeUndockPrivilege	4288	wmic.exe
Token: SeManageVolumePrivilege	4288	wmic.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1492 wrote to memory of 4624	1492	Test.exe	83
PID 1492 wrote to memory of 4624	1492	Test.exe	83
PID 1492 wrote to memory of 2280	1492	Test.exe	88
PID 1492 wrote to memory of 2280	1492	Test.exe	88
PID 1492 wrote to memory of 4384	1492	Test.exe	92
PID 1492 wrote to memory of 4384	1492	Test.exe	92
PID 1492 wrote to memory of 3640	1492	Test.exe	94
PID 1492 wrote to memory of 3640	1492	Test.exe	94
PID 1492 wrote to memory of 3860	1492	Test.exe	96
PID 1492 wrote to memory of 3860	1492	Test.exe	96
PID 1492 wrote to memory of 4288	1492	Test.exe	98
PID 1492 wrote to memory of 4288	1492	Test.exe	98
PID 1492 wrote to memory of 3432	1492	Test.exe	100
PID 1492 wrote to memory of 3432	1492	Test.exe	100
PID 1492 wrote to memory of 2892	1492	Test.exe	102
PID 1492 wrote to memory of 2892	1492	Test.exe	102
PID 1492 wrote to memory of 5092	1492	Test.exe	104
PID 1492 wrote to memory of 5092	1492	Test.exe	104
PID 1492 wrote to memory of 1920	1492	Test.exe	106
PID 1492 wrote to memory of 1920	1492	Test.exe	106

C:\Users\Admin\AppData\Local\Temp\Test.exe
"C:\Users\Admin\AppData\Local\Temp\Test.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1492
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4624
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Test.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2280
- 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:4384
- 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:3640
- 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:3860
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4288
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:3432
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2892
- 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:5092
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1920

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
0b8cb2e6dd5794b6a56a4bdbbd430fd7

SHA1
2b08e348c3489c6a35761af073018e3784c12074

SHA256
bcce0d44e33747e4c39df9afbd0a4e98a47ded0188375e4dfdd94cafbb366e1f

SHA512
15ce3b588aa80899f69b0313c7e188d886bddbd09783ca732ac33f9ae8e4e017a72b6f98919f581383a4582732575e5faedb0dea87e01cf2b657424945fdf4d2

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
ec79fae4e7c09310ebf4f2d85a33a638

SHA1
f2bdd995b12e65e7ed437d228f22223b59e76efb

SHA256
e9c4723a5fe34e081c3d2f548a1d472394cc7aa58056fcf44ca542061381243a

SHA512
af9dda12f6bb388d826fe03a4a8beed9bda23a978aa55a2af6a43271660ee896a7ee3bcf2c4d2f1e6180902791d8c23560f1c2ec097a501d8c6f4f6c49075625

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ngoerxht.myn.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1492-72-0x000001B9A45A0000-0x000001B9A45AA000-memory.dmp

Filesize
40KB

Download
memory/1492-35-0x000001B9BD110000-0x000001B9BD12E000-memory.dmp

Filesize
120KB

Download
memory/1492-93-0x00007FFDAABB0000-0x00007FFDAB671000-memory.dmp

Filesize
10.8MB

Download
memory/1492-73-0x000001B9A4620000-0x000001B9A4632000-memory.dmp

Filesize
72KB

Download
memory/1492-2-0x00007FFDAABB0000-0x00007FFDAB671000-memory.dmp

Filesize
10.8MB

Download
memory/1492-33-0x000001B9BD060000-0x000001B9BD0D6000-memory.dmp

Filesize
472KB

Download
memory/1492-34-0x000001B9A45B0000-0x000001B9A4600000-memory.dmp

Filesize
320KB

Download
memory/1492-0-0x000001B9A28A0000-0x000001B9A2922000-memory.dmp

Filesize
520KB

Download
memory/1492-1-0x00007FFDAABB3000-0x00007FFDAABB5000-memory.dmp

Filesize
8KB

Download
memory/2280-15-0x00007FFDAABB0000-0x00007FFDAB671000-memory.dmp

Filesize
10.8MB

Download
memory/2280-9-0x0000027C8B500000-0x0000027C8B522000-memory.dmp

Filesize
136KB

Download
memory/2280-3-0x00007FFDAABB0000-0x00007FFDAB671000-memory.dmp

Filesize
10.8MB

Download
memory/2280-14-0x00007FFDAABB0000-0x00007FFDAB671000-memory.dmp

Filesize
10.8MB

Download
memory/2280-18-0x00007FFDAABB0000-0x00007FFDAB671000-memory.dmp

Filesize
10.8MB

Download