umbral | 7c6685525101dbe507d53a87e9c31a80c400f53cfb6545b762f641ba4fd886eb

Analysis

max time kernel
101s
max time network
118s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
20-08-2024 18:50

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General

Target

8ea49a2060302a178c62b0b81071f500N.exe
Size

422KB
MD5

8ea49a2060302a178c62b0b81071f500
SHA1

472285c12798562ccda3acba3cc1d497871d98b1
SHA256

7c6685525101dbe507d53a87e9c31a80c400f53cfb6545b762f641ba4fd886eb
SHA512

4ffb22e6d5ceaa5f568aa837d0cd475e5aeebaad6016fe30f0175d2ee15377a2aba9787f9b60611f46b1a93352a43f60cd3f0db94fce92bb3167b818b85f59a2
SSDEEP

6144:LloZM+rIkd8g+EtXHkv/iD4ty4/IuphChn6opNsGVb8e1mHbih:JoZtL+EP8ty4/IuphChn6opNsie2h

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/4200-1-0x0000020AE1210000-0x0000020AE1280000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
556	powershell.exe
1936	powershell.exe
2960	powershell.exe
4464	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	8ea49a2060302a178c62b0b81071f500N.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
34	discord.com
35	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

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2928	cmd.exe
708	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4744	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
708	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4200	8ea49a2060302a178c62b0b81071f500N.exe
4464	powershell.exe
4464	powershell.exe
556	powershell.exe
556	powershell.exe
1936	powershell.exe
1936	powershell.exe
4320	powershell.exe
4320	powershell.exe
2960	powershell.exe
2960	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4200	8ea49a2060302a178c62b0b81071f500N.exe
Token: SeIncreaseQuotaPrivilege	4036	wmic.exe
Token: SeSecurityPrivilege	4036	wmic.exe
Token: SeTakeOwnershipPrivilege	4036	wmic.exe
Token: SeLoadDriverPrivilege	4036	wmic.exe
Token: SeSystemProfilePrivilege	4036	wmic.exe
Token: SeSystemtimePrivilege	4036	wmic.exe
Token: SeProfSingleProcessPrivilege	4036	wmic.exe
Token: SeIncBasePriorityPrivilege	4036	wmic.exe
Token: SeCreatePagefilePrivilege	4036	wmic.exe
Token: SeBackupPrivilege	4036	wmic.exe
Token: SeRestorePrivilege	4036	wmic.exe
Token: SeShutdownPrivilege	4036	wmic.exe
Token: SeDebugPrivilege	4036	wmic.exe
Token: SeSystemEnvironmentPrivilege	4036	wmic.exe
Token: SeRemoteShutdownPrivilege	4036	wmic.exe
Token: SeUndockPrivilege	4036	wmic.exe
Token: SeManageVolumePrivilege	4036	wmic.exe
Token: 33	4036	wmic.exe
Token: 34	4036	wmic.exe
Token: 35	4036	wmic.exe
Token: 36	4036	wmic.exe
Token: SeIncreaseQuotaPrivilege	4036	wmic.exe
Token: SeSecurityPrivilege	4036	wmic.exe
Token: SeTakeOwnershipPrivilege	4036	wmic.exe
Token: SeLoadDriverPrivilege	4036	wmic.exe
Token: SeSystemProfilePrivilege	4036	wmic.exe
Token: SeSystemtimePrivilege	4036	wmic.exe
Token: SeProfSingleProcessPrivilege	4036	wmic.exe
Token: SeIncBasePriorityPrivilege	4036	wmic.exe
Token: SeCreatePagefilePrivilege	4036	wmic.exe
Token: SeBackupPrivilege	4036	wmic.exe
Token: SeRestorePrivilege	4036	wmic.exe
Token: SeShutdownPrivilege	4036	wmic.exe
Token: SeDebugPrivilege	4036	wmic.exe
Token: SeSystemEnvironmentPrivilege	4036	wmic.exe
Token: SeRemoteShutdownPrivilege	4036	wmic.exe
Token: SeUndockPrivilege	4036	wmic.exe
Token: SeManageVolumePrivilege	4036	wmic.exe
Token: 33	4036	wmic.exe
Token: 34	4036	wmic.exe
Token: 35	4036	wmic.exe
Token: 36	4036	wmic.exe
Token: SeDebugPrivilege	4464	powershell.exe
Token: SeDebugPrivilege	556	powershell.exe
Token: SeDebugPrivilege	1936	powershell.exe
Token: SeDebugPrivilege	4320	powershell.exe
Token: SeIncreaseQuotaPrivilege	4756	wmic.exe
Token: SeSecurityPrivilege	4756	wmic.exe
Token: SeTakeOwnershipPrivilege	4756	wmic.exe
Token: SeLoadDriverPrivilege	4756	wmic.exe
Token: SeSystemProfilePrivilege	4756	wmic.exe
Token: SeSystemtimePrivilege	4756	wmic.exe
Token: SeProfSingleProcessPrivilege	4756	wmic.exe
Token: SeIncBasePriorityPrivilege	4756	wmic.exe
Token: SeCreatePagefilePrivilege	4756	wmic.exe
Token: SeBackupPrivilege	4756	wmic.exe
Token: SeRestorePrivilege	4756	wmic.exe
Token: SeShutdownPrivilege	4756	wmic.exe
Token: SeDebugPrivilege	4756	wmic.exe
Token: SeSystemEnvironmentPrivilege	4756	wmic.exe
Token: SeRemoteShutdownPrivilege	4756	wmic.exe
Token: SeUndockPrivilege	4756	wmic.exe
Token: SeManageVolumePrivilege	4756	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4200 wrote to memory of 4036	4200	8ea49a2060302a178c62b0b81071f500N.exe	84
PID 4200 wrote to memory of 4036	4200	8ea49a2060302a178c62b0b81071f500N.exe	84
PID 4200 wrote to memory of 4484	4200	8ea49a2060302a178c62b0b81071f500N.exe	90
PID 4200 wrote to memory of 4484	4200	8ea49a2060302a178c62b0b81071f500N.exe	90
PID 4200 wrote to memory of 4464	4200	8ea49a2060302a178c62b0b81071f500N.exe	92
PID 4200 wrote to memory of 4464	4200	8ea49a2060302a178c62b0b81071f500N.exe	92
PID 4200 wrote to memory of 556	4200	8ea49a2060302a178c62b0b81071f500N.exe	94
PID 4200 wrote to memory of 556	4200	8ea49a2060302a178c62b0b81071f500N.exe	94
PID 4200 wrote to memory of 1936	4200	8ea49a2060302a178c62b0b81071f500N.exe	96
PID 4200 wrote to memory of 1936	4200	8ea49a2060302a178c62b0b81071f500N.exe	96
PID 4200 wrote to memory of 4320	4200	8ea49a2060302a178c62b0b81071f500N.exe	98
PID 4200 wrote to memory of 4320	4200	8ea49a2060302a178c62b0b81071f500N.exe	98
PID 4200 wrote to memory of 4756	4200	8ea49a2060302a178c62b0b81071f500N.exe	100
PID 4200 wrote to memory of 4756	4200	8ea49a2060302a178c62b0b81071f500N.exe	100
PID 4200 wrote to memory of 4012	4200	8ea49a2060302a178c62b0b81071f500N.exe	104
PID 4200 wrote to memory of 4012	4200	8ea49a2060302a178c62b0b81071f500N.exe	104
PID 4200 wrote to memory of 4704	4200	8ea49a2060302a178c62b0b81071f500N.exe	106
PID 4200 wrote to memory of 4704	4200	8ea49a2060302a178c62b0b81071f500N.exe	106
PID 4200 wrote to memory of 2960	4200	8ea49a2060302a178c62b0b81071f500N.exe	108
PID 4200 wrote to memory of 2960	4200	8ea49a2060302a178c62b0b81071f500N.exe	108
PID 4200 wrote to memory of 4744	4200	8ea49a2060302a178c62b0b81071f500N.exe	110
PID 4200 wrote to memory of 4744	4200	8ea49a2060302a178c62b0b81071f500N.exe	110
PID 4200 wrote to memory of 2928	4200	8ea49a2060302a178c62b0b81071f500N.exe	113
PID 4200 wrote to memory of 2928	4200	8ea49a2060302a178c62b0b81071f500N.exe	113
PID 2928 wrote to memory of 708	2928	cmd.exe	115
PID 2928 wrote to memory of 708	2928	cmd.exe	115

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4484	attrib.exe

C:\Users\Admin\AppData\Local\Temp\8ea49a2060302a178c62b0b81071f500N.exe
"C:\Users\Admin\AppData\Local\Temp\8ea49a2060302a178c62b0b81071f500N.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4200
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4036
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\8ea49a2060302a178c62b0b81071f500N.exe"
  2⤵
  - Views/modifies file attributes
  PID:4484
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\8ea49a2060302a178c62b0b81071f500N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4464
- 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:556
- 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:1936
- 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:4320
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4756
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:4012
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4704
- 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:2960
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4744
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\8ea49a2060302a178c62b0b81071f500N.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2928
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:708

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

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Remote System Discovery

T1018

System Information Discovery

T1082

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

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
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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
548dd08570d121a65e82abb7171cae1c

SHA1
1a1b5084b3a78f3acd0d811cc79dbcac121217ab

SHA256
cdf17b8532ebcebac3cfe23954a30aa32edd268d040da79c82687e4ccb044adc

SHA512
37b98b09178b51eec9599af90d027d2f1028202efc1633047e16e41f1a95610984af5620baac07db085ccfcb96942aafffad17aa1f44f63233e83869dc9f697b

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

Filesize
1KB

MD5
6317adf4fbc43ea2fd68861fafd57155

SHA1
6b87c718893c83c6eed2767e8d9cbc6443e31913

SHA256
c1ead17eef37b4b461cedc276504a441489e819c7f943037f2001966aeec90af

SHA512
17229aae8622e4bfc3caaac55684f7d4ccd3162af5919c851b1d8ac4060b6bb7b75044ecee116523d05acb55197dcb60780958f629450edef386f1e6f65f49f0

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_iucl4xne.gd1.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4200-71-0x0000020AFB960000-0x0000020AFB96A000-memory.dmp

Filesize
40KB

Download
memory/4200-35-0x0000020AE3110000-0x0000020AE312E000-memory.dmp

Filesize
120KB

Download
memory/4200-90-0x00007FF8FA5E0000-0x00007FF8FB0A1000-memory.dmp

Filesize
10.8MB

Download
memory/4200-72-0x0000020AFBA60000-0x0000020AFBA72000-memory.dmp

Filesize
72KB

Download
memory/4200-2-0x00007FF8FA5E0000-0x00007FF8FB0A1000-memory.dmp

Filesize
10.8MB

Download
memory/4200-33-0x0000020AFB990000-0x0000020AFBA06000-memory.dmp

Filesize
472KB

Download
memory/4200-34-0x0000020AFBA10000-0x0000020AFBA60000-memory.dmp

Filesize
320KB

Download
memory/4200-0-0x00007FF8FA5E3000-0x00007FF8FA5E5000-memory.dmp

Filesize
8KB

Download
memory/4200-1-0x0000020AE1210000-0x0000020AE1280000-memory.dmp

Filesize
448KB

Download
memory/4464-15-0x00007FF8FA5E0000-0x00007FF8FB0A1000-memory.dmp

Filesize
10.8MB

Download
memory/4464-9-0x000002646AEA0000-0x000002646AEC2000-memory.dmp

Filesize
136KB

Download
memory/4464-3-0x00007FF8FA5E0000-0x00007FF8FB0A1000-memory.dmp

Filesize
10.8MB

Download
memory/4464-14-0x00007FF8FA5E0000-0x00007FF8FB0A1000-memory.dmp

Filesize
10.8MB

Download
memory/4464-18-0x00007FF8FA5E0000-0x00007FF8FB0A1000-memory.dmp

Filesize
10.8MB

Download