umbral | 0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
27/08/2024, 20:20

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General

Target

0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe
Size

231KB
MD5

dd37f3db081031f72358bb3b9edf4e21
SHA1

256023f67c0f6e3717d1e9a338187c33d16b6574
SHA256

0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c
SHA512

08f1776d67fbef2d4139031abd5fdbd953e8312d54563883b4c45df3dc4376356e24be7a84b47e20d6c9c20f771ce8b7fce4f8468c046743a77a7f4893dd812c
SSDEEP

6144:xloZMzrIkd8g+EtXHkv/iD4lDkgJX8QfP+nJUg1Nvmb8e1m6Fi:DoZcL+EP8lDkgJX8QfP+nJUg1sQ

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2680-1-0x00000000010F0000-0x0000000001130000-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
2792	powershell.exe
1120	powershell.exe
2912	powershell.exe
1168	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe

Deletes itself 1 IoCs

pid	Process
2956	cmd.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
9	discord.com
10	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
2956	cmd.exe
1548	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2248	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1548	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe
2792	powershell.exe
1120	powershell.exe
2912	powershell.exe
1280	powershell.exe
1168	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe
Token: SeIncreaseQuotaPrivilege	2936	wmic.exe
Token: SeSecurityPrivilege	2936	wmic.exe
Token: SeTakeOwnershipPrivilege	2936	wmic.exe
Token: SeLoadDriverPrivilege	2936	wmic.exe
Token: SeSystemProfilePrivilege	2936	wmic.exe
Token: SeSystemtimePrivilege	2936	wmic.exe
Token: SeProfSingleProcessPrivilege	2936	wmic.exe
Token: SeIncBasePriorityPrivilege	2936	wmic.exe
Token: SeCreatePagefilePrivilege	2936	wmic.exe
Token: SeBackupPrivilege	2936	wmic.exe
Token: SeRestorePrivilege	2936	wmic.exe
Token: SeShutdownPrivilege	2936	wmic.exe
Token: SeDebugPrivilege	2936	wmic.exe
Token: SeSystemEnvironmentPrivilege	2936	wmic.exe
Token: SeRemoteShutdownPrivilege	2936	wmic.exe
Token: SeUndockPrivilege	2936	wmic.exe
Token: SeManageVolumePrivilege	2936	wmic.exe
Token: 33	2936	wmic.exe
Token: 34	2936	wmic.exe
Token: 35	2936	wmic.exe
Token: SeIncreaseQuotaPrivilege	2936	wmic.exe
Token: SeSecurityPrivilege	2936	wmic.exe
Token: SeTakeOwnershipPrivilege	2936	wmic.exe
Token: SeLoadDriverPrivilege	2936	wmic.exe
Token: SeSystemProfilePrivilege	2936	wmic.exe
Token: SeSystemtimePrivilege	2936	wmic.exe
Token: SeProfSingleProcessPrivilege	2936	wmic.exe
Token: SeIncBasePriorityPrivilege	2936	wmic.exe
Token: SeCreatePagefilePrivilege	2936	wmic.exe
Token: SeBackupPrivilege	2936	wmic.exe
Token: SeRestorePrivilege	2936	wmic.exe
Token: SeShutdownPrivilege	2936	wmic.exe
Token: SeDebugPrivilege	2936	wmic.exe
Token: SeSystemEnvironmentPrivilege	2936	wmic.exe
Token: SeRemoteShutdownPrivilege	2936	wmic.exe
Token: SeUndockPrivilege	2936	wmic.exe
Token: SeManageVolumePrivilege	2936	wmic.exe
Token: 33	2936	wmic.exe
Token: 34	2936	wmic.exe
Token: 35	2936	wmic.exe
Token: SeDebugPrivilege	2792	powershell.exe
Token: SeDebugPrivilege	1120	powershell.exe
Token: SeDebugPrivilege	2912	powershell.exe
Token: SeDebugPrivilege	1280	powershell.exe
Token: SeIncreaseQuotaPrivilege	2032	wmic.exe
Token: SeSecurityPrivilege	2032	wmic.exe
Token: SeTakeOwnershipPrivilege	2032	wmic.exe
Token: SeLoadDriverPrivilege	2032	wmic.exe
Token: SeSystemProfilePrivilege	2032	wmic.exe
Token: SeSystemtimePrivilege	2032	wmic.exe
Token: SeProfSingleProcessPrivilege	2032	wmic.exe
Token: SeIncBasePriorityPrivilege	2032	wmic.exe
Token: SeCreatePagefilePrivilege	2032	wmic.exe
Token: SeBackupPrivilege	2032	wmic.exe
Token: SeRestorePrivilege	2032	wmic.exe
Token: SeShutdownPrivilege	2032	wmic.exe
Token: SeDebugPrivilege	2032	wmic.exe
Token: SeSystemEnvironmentPrivilege	2032	wmic.exe
Token: SeRemoteShutdownPrivilege	2032	wmic.exe
Token: SeUndockPrivilege	2032	wmic.exe
Token: SeManageVolumePrivilege	2032	wmic.exe
Token: 33	2032	wmic.exe
Token: 34	2032	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2680 wrote to memory of 2936	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	30
PID 2680 wrote to memory of 2936	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	30
PID 2680 wrote to memory of 2936	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	30
PID 2680 wrote to memory of 2612	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	33
PID 2680 wrote to memory of 2612	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	33
PID 2680 wrote to memory of 2612	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	33
PID 2680 wrote to memory of 2792	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	35
PID 2680 wrote to memory of 2792	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	35
PID 2680 wrote to memory of 2792	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	35
PID 2680 wrote to memory of 1120	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	37
PID 2680 wrote to memory of 1120	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	37
PID 2680 wrote to memory of 1120	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	37
PID 2680 wrote to memory of 2912	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	39
PID 2680 wrote to memory of 2912	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	39
PID 2680 wrote to memory of 2912	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	39
PID 2680 wrote to memory of 1280	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	41
PID 2680 wrote to memory of 1280	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	41
PID 2680 wrote to memory of 1280	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	41
PID 2680 wrote to memory of 2032	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	43
PID 2680 wrote to memory of 2032	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	43
PID 2680 wrote to memory of 2032	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	43
PID 2680 wrote to memory of 1932	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	45
PID 2680 wrote to memory of 1932	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	45
PID 2680 wrote to memory of 1932	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	45
PID 2680 wrote to memory of 2028	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	47
PID 2680 wrote to memory of 2028	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	47
PID 2680 wrote to memory of 2028	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	47
PID 2680 wrote to memory of 1168	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	49
PID 2680 wrote to memory of 1168	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	49
PID 2680 wrote to memory of 1168	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	49
PID 2680 wrote to memory of 2248	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	51
PID 2680 wrote to memory of 2248	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	51
PID 2680 wrote to memory of 2248	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	51
PID 2680 wrote to memory of 2956	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	53
PID 2680 wrote to memory of 2956	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	53
PID 2680 wrote to memory of 2956	2680	0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe	53
PID 2956 wrote to memory of 1548	2956	cmd.exe	55
PID 2956 wrote to memory of 1548	2956	cmd.exe	55
PID 2956 wrote to memory of 1548	2956	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2612	attrib.exe

C:\Users\Admin\AppData\Local\Temp\0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe
"C:\Users\Admin\AppData\Local\Temp\0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2680
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2936
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe"
  2⤵
  - Views/modifies file attributes
  PID:2612
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2792
- 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:1120
- 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:2912
- 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:1280
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2032
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1932
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2028
- 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:1168
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2248
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\0a138d71d9cdd9c772628844181e087bc8f2f650e37702f131a32bf8d790867c.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2956
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1548

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\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
b99ac976a49f8093c257985b2fded14f

SHA1
17f2d926f7fb3031cd9e21772edf91d44bef57b3

SHA256
c0ed2ac9a1710e4730954e00e9fe1f01152709f1223a63d9114e59fef6dccd93

SHA512
bbe5e2450083d498989ae0c52ff0f570ead75addf2e990fefddb090797e8e0e63b965212eef257d99e4f6ba3eaf385ac2da65f69ff4a3eea20fb6fdada276f06

Download Submit
memory/1120-14-0x000000001B630000-0x000000001B912000-memory.dmp

Filesize
2.9MB

Download
memory/1120-15-0x00000000026E0000-0x00000000026E8000-memory.dmp

Filesize
32KB

Download
memory/1168-42-0x00000000022C0000-0x00000000022C8000-memory.dmp

Filesize
32KB

Download
memory/2680-0-0x000007FEF5763000-0x000007FEF5764000-memory.dmp

Filesize
4KB

Download
memory/2680-1-0x00000000010F0000-0x0000000001130000-memory.dmp

Filesize
256KB

Download
memory/2680-2-0x000007FEF5760000-0x000007FEF614C000-memory.dmp

Filesize
9.9MB

Download
memory/2680-44-0x000007FEF5763000-0x000007FEF5764000-memory.dmp

Filesize
4KB

Download
memory/2680-47-0x000007FEF5760000-0x000007FEF614C000-memory.dmp

Filesize
9.9MB

Download
memory/2792-7-0x000000001B720000-0x000000001BA02000-memory.dmp

Filesize
2.9MB

Download
memory/2792-8-0x0000000001E10000-0x0000000001E18000-memory.dmp

Filesize
32KB

Download