umbral | 46d2d186cc16096c591ec5374de36c4d0c4fceb024f4f602e3c9d6df20a1a676

Analysis

max time kernel
43s
max time network
44s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
23-04-2024 19:48

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General

Target

NetflixCE.exe
Size

228KB
MD5

07d06d04c3094604382fa3d66c6bc5de
SHA1

4ecde9567e8592f121bed011c12c920dc32f431b
SHA256

46d2d186cc16096c591ec5374de36c4d0c4fceb024f4f602e3c9d6df20a1a676
SHA512

f7c82984984ed922dafff7ea6e6ea70c1caca3d6e4e4539209a6974a5bb8cdb8e9bdb4cb2faaa01e9af8a5e24543ceddae49d569a5e1f59a3ce80e9326b09d50
SSDEEP

6144:+loZM+rIkd8g+EtXHkv/iD4G1x+cCFdWdj+ctBIYlb8e1mCc7i:ooZtL+EP8G1x+cCFdWdj+ctBI00W

Score

10^/10

umbral spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/712-0-0x000001E79CE00000-0x000001E79CE40000-memory.dmp	family_umbral

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

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	NetflixCE.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
51	discord.com
52	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
2176	wmic.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
712	NetflixCE.exe
2916	powershell.exe
2916	powershell.exe
2280	powershell.exe
2280	powershell.exe
4324	powershell.exe
4324	powershell.exe
3136	powershell.exe
3136	powershell.exe
4368	powershell.exe
4368	powershell.exe
4368	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	712	NetflixCE.exe
Token: SeIncreaseQuotaPrivilege	5084	wmic.exe
Token: SeSecurityPrivilege	5084	wmic.exe
Token: SeTakeOwnershipPrivilege	5084	wmic.exe
Token: SeLoadDriverPrivilege	5084	wmic.exe
Token: SeSystemProfilePrivilege	5084	wmic.exe
Token: SeSystemtimePrivilege	5084	wmic.exe
Token: SeProfSingleProcessPrivilege	5084	wmic.exe
Token: SeIncBasePriorityPrivilege	5084	wmic.exe
Token: SeCreatePagefilePrivilege	5084	wmic.exe
Token: SeBackupPrivilege	5084	wmic.exe
Token: SeRestorePrivilege	5084	wmic.exe
Token: SeShutdownPrivilege	5084	wmic.exe
Token: SeDebugPrivilege	5084	wmic.exe
Token: SeSystemEnvironmentPrivilege	5084	wmic.exe
Token: SeRemoteShutdownPrivilege	5084	wmic.exe
Token: SeUndockPrivilege	5084	wmic.exe
Token: SeManageVolumePrivilege	5084	wmic.exe
Token: 33	5084	wmic.exe
Token: 34	5084	wmic.exe
Token: 35	5084	wmic.exe
Token: 36	5084	wmic.exe
Token: SeIncreaseQuotaPrivilege	5084	wmic.exe
Token: SeSecurityPrivilege	5084	wmic.exe
Token: SeTakeOwnershipPrivilege	5084	wmic.exe
Token: SeLoadDriverPrivilege	5084	wmic.exe
Token: SeSystemProfilePrivilege	5084	wmic.exe
Token: SeSystemtimePrivilege	5084	wmic.exe
Token: SeProfSingleProcessPrivilege	5084	wmic.exe
Token: SeIncBasePriorityPrivilege	5084	wmic.exe
Token: SeCreatePagefilePrivilege	5084	wmic.exe
Token: SeBackupPrivilege	5084	wmic.exe
Token: SeRestorePrivilege	5084	wmic.exe
Token: SeShutdownPrivilege	5084	wmic.exe
Token: SeDebugPrivilege	5084	wmic.exe
Token: SeSystemEnvironmentPrivilege	5084	wmic.exe
Token: SeRemoteShutdownPrivilege	5084	wmic.exe
Token: SeUndockPrivilege	5084	wmic.exe
Token: SeManageVolumePrivilege	5084	wmic.exe
Token: 33	5084	wmic.exe
Token: 34	5084	wmic.exe
Token: 35	5084	wmic.exe
Token: 36	5084	wmic.exe
Token: SeDebugPrivilege	2916	powershell.exe
Token: SeDebugPrivilege	2280	powershell.exe
Token: SeDebugPrivilege	4324	powershell.exe
Token: SeDebugPrivilege	3136	powershell.exe
Token: SeIncreaseQuotaPrivilege	5036	wmic.exe
Token: SeSecurityPrivilege	5036	wmic.exe
Token: SeTakeOwnershipPrivilege	5036	wmic.exe
Token: SeLoadDriverPrivilege	5036	wmic.exe
Token: SeSystemProfilePrivilege	5036	wmic.exe
Token: SeSystemtimePrivilege	5036	wmic.exe
Token: SeProfSingleProcessPrivilege	5036	wmic.exe
Token: SeIncBasePriorityPrivilege	5036	wmic.exe
Token: SeCreatePagefilePrivilege	5036	wmic.exe
Token: SeBackupPrivilege	5036	wmic.exe
Token: SeRestorePrivilege	5036	wmic.exe
Token: SeShutdownPrivilege	5036	wmic.exe
Token: SeDebugPrivilege	5036	wmic.exe
Token: SeSystemEnvironmentPrivilege	5036	wmic.exe
Token: SeRemoteShutdownPrivilege	5036	wmic.exe
Token: SeUndockPrivilege	5036	wmic.exe
Token: SeManageVolumePrivilege	5036	wmic.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 712 wrote to memory of 5084	712	NetflixCE.exe	89
PID 712 wrote to memory of 5084	712	NetflixCE.exe	89
PID 712 wrote to memory of 2340	712	NetflixCE.exe	92
PID 712 wrote to memory of 2340	712	NetflixCE.exe	92
PID 712 wrote to memory of 2916	712	NetflixCE.exe	94
PID 712 wrote to memory of 2916	712	NetflixCE.exe	94
PID 712 wrote to memory of 2280	712	NetflixCE.exe	96
PID 712 wrote to memory of 2280	712	NetflixCE.exe	96
PID 712 wrote to memory of 4324	712	NetflixCE.exe	98
PID 712 wrote to memory of 4324	712	NetflixCE.exe	98
PID 712 wrote to memory of 3136	712	NetflixCE.exe	100
PID 712 wrote to memory of 3136	712	NetflixCE.exe	100
PID 712 wrote to memory of 5036	712	NetflixCE.exe	110
PID 712 wrote to memory of 5036	712	NetflixCE.exe	110
PID 712 wrote to memory of 4352	712	NetflixCE.exe	112
PID 712 wrote to memory of 4352	712	NetflixCE.exe	112
PID 712 wrote to memory of 2780	712	NetflixCE.exe	114
PID 712 wrote to memory of 2780	712	NetflixCE.exe	114
PID 712 wrote to memory of 4368	712	NetflixCE.exe	116
PID 712 wrote to memory of 4368	712	NetflixCE.exe	116
PID 712 wrote to memory of 2176	712	NetflixCE.exe	118
PID 712 wrote to memory of 2176	712	NetflixCE.exe	118

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2340	attrib.exe

C:\Users\Admin\AppData\Local\Temp\NetflixCE.exe
"C:\Users\Admin\AppData\Local\Temp\NetflixCE.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:712
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:5084
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\NetflixCE.exe"
  2⤵
  - Views/modifies file attributes
  PID:2340
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\NetflixCE.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2916
- 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:2280
- 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:4324
- 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:3136
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:5036
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:4352
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2780
- 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:4368
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2176

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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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
6d42b6da621e8df5674e26b799c8e2aa

SHA1
ab3ce1327ea1eeedb987ec823d5e0cb146bafa48

SHA256
5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c

SHA512
53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

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

Filesize
948B

MD5
966914e2e771de7a4a57a95b6ecfa8a9

SHA1
7a32282fd51dd032967ed4d9a40cc57e265aeff2

SHA256
98d3c70d7004fa807897317bd6cd3e977b9b6c72d4d2565aca0f9f8b1c315cba

SHA512
dc39c7124a9c7c8d4c7e8e16290c46360b8d9a8f4e43edaacbbeb09bdcf20159a53db54d2b322372001b6a3de52b2f88e9088b5fdbc7638816ae0d122bb015f5

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
32aba9fc1f9be72d6cec0c940a447e7d

SHA1
e7592845595240ce5b9fb7446ef662a07d776dbb

SHA256
9780e7a93d5d6ab92e2d0c24a613d978bdedd8acab2a7e7bd383121adefd4f9b

SHA512
a9c81be11554941af0b08129302bd77ba131e04e88b983c9203f9f7a26bfc1b102b75bc19a95ae68beb0da0dbcbbac681ad53b79f274af35af28dbb10dfa1a9b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1ta2dtqo.bxi.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/712-86-0x000001E79EAB0000-0x000001E79EABA000-memory.dmp

Filesize
40KB

Download
memory/712-87-0x000001E79EB30000-0x000001E79EB42000-memory.dmp

Filesize
72KB

Download
memory/712-37-0x000001E7B7590000-0x000001E7B7606000-memory.dmp

Filesize
472KB

Download
memory/712-82-0x000001E79D220000-0x000001E79D230000-memory.dmp

Filesize
64KB

Download
memory/712-65-0x00007FFB57AD0000-0x00007FFB58591000-memory.dmp

Filesize
10.8MB

Download
memory/712-2-0x000001E79D220000-0x000001E79D230000-memory.dmp

Filesize
64KB

Download
memory/712-0-0x000001E79CE00000-0x000001E79CE40000-memory.dmp

Filesize
256KB

Download
memory/712-38-0x000001E79EAE0000-0x000001E79EB30000-memory.dmp

Filesize
320KB

Download
memory/712-39-0x000001E7B7650000-0x000001E7B766E000-memory.dmp

Filesize
120KB

Download
memory/712-1-0x00007FFB57AD0000-0x00007FFB58591000-memory.dmp

Filesize
10.8MB

Download
memory/2280-32-0x000001E759530000-0x000001E759540000-memory.dmp

Filesize
64KB

Download
memory/2280-21-0x000001E759530000-0x000001E759540000-memory.dmp

Filesize
64KB

Download
memory/2280-20-0x00007FFB57AD0000-0x00007FFB58591000-memory.dmp

Filesize
10.8MB

Download
memory/2280-34-0x00007FFB57AD0000-0x00007FFB58591000-memory.dmp

Filesize
10.8MB

Download
memory/2916-18-0x00007FFB57AD0000-0x00007FFB58591000-memory.dmp

Filesize
10.8MB

Download
memory/2916-8-0x0000016B79FD0000-0x0000016B79FF2000-memory.dmp

Filesize
136KB

Download
memory/2916-11-0x0000016B79990000-0x0000016B799A0000-memory.dmp

Filesize
64KB

Download
memory/2916-9-0x00007FFB57AD0000-0x00007FFB58591000-memory.dmp

Filesize
10.8MB

Download
memory/2916-10-0x0000016B79990000-0x0000016B799A0000-memory.dmp

Filesize
64KB

Download
memory/3136-80-0x000002164FFB0000-0x000002164FFC0000-memory.dmp

Filesize
64KB

Download
memory/3136-78-0x00007FFB57AD0000-0x00007FFB58591000-memory.dmp

Filesize
10.8MB

Download
memory/3136-79-0x000002164FFB0000-0x000002164FFC0000-memory.dmp

Filesize
64KB

Download
memory/3136-84-0x00007FFB57AD0000-0x00007FFB58591000-memory.dmp

Filesize
10.8MB

Download
memory/4324-68-0x00007FFB57AD0000-0x00007FFB58591000-memory.dmp

Filesize
10.8MB

Download
memory/4324-66-0x000001DF71580000-0x000001DF71590000-memory.dmp

Filesize
64KB

Download
memory/4324-44-0x000001DF71580000-0x000001DF71590000-memory.dmp

Filesize
64KB

Download
memory/4324-41-0x000001DF71580000-0x000001DF71590000-memory.dmp

Filesize
64KB

Download
memory/4324-40-0x00007FFB57AD0000-0x00007FFB58591000-memory.dmp

Filesize
10.8MB

Download
memory/4368-100-0x00007FFB57AD0000-0x00007FFB58591000-memory.dmp

Filesize
10.8MB

Download
memory/4368-101-0x000002216CBB0000-0x000002216CBC0000-memory.dmp

Filesize
64KB

Download
memory/4368-102-0x000002216CBB0000-0x000002216CBC0000-memory.dmp

Filesize
64KB

Download
memory/4368-104-0x00007FFB57AD0000-0x00007FFB58591000-memory.dmp

Filesize
10.8MB

Download