umbral | 3dec6623a9f5488bc8fc4a3185cddd03bdda73247063875943a79dd75c5071b6

Analysis

max time kernel
138s
max time network
102s
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 11:35

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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/544-1-0x000001C8BE380000-0x000001C8BE3C0000-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
1400	powershell.exe
1724	powershell.exe
5116	powershell.exe
1892	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
29	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
1464	PING.EXE
648	cmd.exe

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1856	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1464	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
544	everything.exe
1892	powershell.exe
1892	powershell.exe
1400	powershell.exe
1400	powershell.exe
1724	powershell.exe
1724	powershell.exe
2952	powershell.exe
2952	powershell.exe
5116	powershell.exe
5116	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	544	everything.exe
Token: SeIncreaseQuotaPrivilege	5064	wmic.exe
Token: SeSecurityPrivilege	5064	wmic.exe
Token: SeTakeOwnershipPrivilege	5064	wmic.exe
Token: SeLoadDriverPrivilege	5064	wmic.exe
Token: SeSystemProfilePrivilege	5064	wmic.exe
Token: SeSystemtimePrivilege	5064	wmic.exe
Token: SeProfSingleProcessPrivilege	5064	wmic.exe
Token: SeIncBasePriorityPrivilege	5064	wmic.exe
Token: SeCreatePagefilePrivilege	5064	wmic.exe
Token: SeBackupPrivilege	5064	wmic.exe
Token: SeRestorePrivilege	5064	wmic.exe
Token: SeShutdownPrivilege	5064	wmic.exe
Token: SeDebugPrivilege	5064	wmic.exe
Token: SeSystemEnvironmentPrivilege	5064	wmic.exe
Token: SeRemoteShutdownPrivilege	5064	wmic.exe
Token: SeUndockPrivilege	5064	wmic.exe
Token: SeManageVolumePrivilege	5064	wmic.exe
Token: 33	5064	wmic.exe
Token: 34	5064	wmic.exe
Token: 35	5064	wmic.exe
Token: 36	5064	wmic.exe
Token: SeIncreaseQuotaPrivilege	5064	wmic.exe
Token: SeSecurityPrivilege	5064	wmic.exe
Token: SeTakeOwnershipPrivilege	5064	wmic.exe
Token: SeLoadDriverPrivilege	5064	wmic.exe
Token: SeSystemProfilePrivilege	5064	wmic.exe
Token: SeSystemtimePrivilege	5064	wmic.exe
Token: SeProfSingleProcessPrivilege	5064	wmic.exe
Token: SeIncBasePriorityPrivilege	5064	wmic.exe
Token: SeCreatePagefilePrivilege	5064	wmic.exe
Token: SeBackupPrivilege	5064	wmic.exe
Token: SeRestorePrivilege	5064	wmic.exe
Token: SeShutdownPrivilege	5064	wmic.exe
Token: SeDebugPrivilege	5064	wmic.exe
Token: SeSystemEnvironmentPrivilege	5064	wmic.exe
Token: SeRemoteShutdownPrivilege	5064	wmic.exe
Token: SeUndockPrivilege	5064	wmic.exe
Token: SeManageVolumePrivilege	5064	wmic.exe
Token: 33	5064	wmic.exe
Token: 34	5064	wmic.exe
Token: 35	5064	wmic.exe
Token: 36	5064	wmic.exe
Token: SeDebugPrivilege	1892	powershell.exe
Token: SeDebugPrivilege	1400	powershell.exe
Token: SeDebugPrivilege	1724	powershell.exe
Token: SeDebugPrivilege	2952	powershell.exe
Token: SeIncreaseQuotaPrivilege	3396	wmic.exe
Token: SeSecurityPrivilege	3396	wmic.exe
Token: SeTakeOwnershipPrivilege	3396	wmic.exe
Token: SeLoadDriverPrivilege	3396	wmic.exe
Token: SeSystemProfilePrivilege	3396	wmic.exe
Token: SeSystemtimePrivilege	3396	wmic.exe
Token: SeProfSingleProcessPrivilege	3396	wmic.exe
Token: SeIncBasePriorityPrivilege	3396	wmic.exe
Token: SeCreatePagefilePrivilege	3396	wmic.exe
Token: SeBackupPrivilege	3396	wmic.exe
Token: SeRestorePrivilege	3396	wmic.exe
Token: SeShutdownPrivilege	3396	wmic.exe
Token: SeDebugPrivilege	3396	wmic.exe
Token: SeSystemEnvironmentPrivilege	3396	wmic.exe
Token: SeRemoteShutdownPrivilege	3396	wmic.exe
Token: SeUndockPrivilege	3396	wmic.exe
Token: SeManageVolumePrivilege	3396	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 544 wrote to memory of 5064	544	everything.exe	86
PID 544 wrote to memory of 5064	544	everything.exe	86
PID 544 wrote to memory of 2260	544	everything.exe	92
PID 544 wrote to memory of 2260	544	everything.exe	92
PID 544 wrote to memory of 1892	544	everything.exe	94
PID 544 wrote to memory of 1892	544	everything.exe	94
PID 544 wrote to memory of 1400	544	everything.exe	96
PID 544 wrote to memory of 1400	544	everything.exe	96
PID 544 wrote to memory of 1724	544	everything.exe	98
PID 544 wrote to memory of 1724	544	everything.exe	98
PID 544 wrote to memory of 2952	544	everything.exe	100
PID 544 wrote to memory of 2952	544	everything.exe	100
PID 544 wrote to memory of 3396	544	everything.exe	102
PID 544 wrote to memory of 3396	544	everything.exe	102
PID 544 wrote to memory of 2480	544	everything.exe	104
PID 544 wrote to memory of 2480	544	everything.exe	104
PID 544 wrote to memory of 684	544	everything.exe	106
PID 544 wrote to memory of 684	544	everything.exe	106
PID 544 wrote to memory of 5116	544	everything.exe	108
PID 544 wrote to memory of 5116	544	everything.exe	108
PID 544 wrote to memory of 1856	544	everything.exe	110
PID 544 wrote to memory of 1856	544	everything.exe	110
PID 544 wrote to memory of 648	544	everything.exe	112
PID 544 wrote to memory of 648	544	everything.exe	112
PID 648 wrote to memory of 1464	648	cmd.exe	114
PID 648 wrote to memory of 1464	648	cmd.exe	114

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2260	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:544
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:5064
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\everything.exe"
  2⤵
  - Views/modifies file attributes
  PID:2260
- 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:1892
- 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:1400
- 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:1724
- 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:2952
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3396
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2480
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:684
- 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:5116
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1856
- 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:648
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1464

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
6d3e9c29fe44e90aae6ed30ccf799ca8

SHA1
c7974ef72264bbdf13a2793ccf1aed11bc565dce

SHA256
2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

SHA512
60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

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

Filesize
948B

MD5
af283a45e468abc28a9ac1c14af0a45d

SHA1
6d70a604e1a12e0df9b98a4bf57d335d78986c93

SHA256
141a5cbf854b091471384f71c93282c31d166a8676d43559c38086dd6e07229c

SHA512
05abb1f812dd979755e811928006974bccf076e8f618061e64db35b129bb78175a99bac6eefa5e11f6f3c4af94f60e9b7da4c4ba07fa740748ff47a4511d4db8

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
c4c832d6943a028d6fdd118cb7ad6228

SHA1
5997906227a3401a7ce10120ee114686dcaa7c37

SHA256
10db92d907398828e8e561626bdf329bebf7382808948db6be913084d5f415a8

SHA512
1f89d94a1c76f71ab1da7248a5cc1afc8ae77c6b9c71a444058b590c91922cda3c5d8b51a0a9a0ddfc6b5e0c1dc11497d5e2e58f9ac743c8fbcd1efc99657adf

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xjxcbe0a.00c.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/544-71-0x000001C8C0160000-0x000001C8C016A000-memory.dmp

Filesize
40KB

Download
memory/544-35-0x000001C8BE860000-0x000001C8BE87E000-memory.dmp

Filesize
120KB

Download
memory/544-90-0x00007FFA2F9F0000-0x00007FFA304B1000-memory.dmp

Filesize
10.8MB

Download
memory/544-72-0x000001C8D89B0000-0x000001C8D89C2000-memory.dmp

Filesize
72KB

Download
memory/544-2-0x00007FFA2F9F0000-0x00007FFA304B1000-memory.dmp

Filesize
10.8MB

Download
memory/544-33-0x000001C8D8B60000-0x000001C8D8BD6000-memory.dmp

Filesize
472KB

Download
memory/544-34-0x000001C8D8AE0000-0x000001C8D8B30000-memory.dmp

Filesize
320KB

Download
memory/544-0-0x00007FFA2F9F3000-0x00007FFA2F9F5000-memory.dmp

Filesize
8KB

Download
memory/544-1-0x000001C8BE380000-0x000001C8BE3C0000-memory.dmp

Filesize
256KB

Download
memory/1892-15-0x00007FFA2F9F0000-0x00007FFA304B1000-memory.dmp

Filesize
10.8MB

Download
memory/1892-14-0x00007FFA2F9F0000-0x00007FFA304B1000-memory.dmp

Filesize
10.8MB

Download
memory/1892-3-0x00007FFA2F9F0000-0x00007FFA304B1000-memory.dmp

Filesize
10.8MB

Download
memory/1892-4-0x00000237215F0000-0x0000023721612000-memory.dmp

Filesize
136KB

Download
memory/1892-18-0x00007FFA2F9F0000-0x00007FFA304B1000-memory.dmp

Filesize
10.8MB

Download