umbral | 435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92

Analysis

max time kernel
16s
max time network
16s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
19/09/2024, 02:16

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General

Target

Delta hack pc.exe
Size

231KB
MD5

3b915b9bbc5ddf429f85bf939febe424
SHA1

2278baaf3764a27bc962de75601f4d49b2191592
SHA256

435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92
SHA512

d83341bf784bed732bf120299824ea066f66f505b6dd0fb0b84396af34877a1ba0c483c805835179be2463dd34503b31260035e78f47ca1396305f60f2be50ed
SSDEEP

6144:xloZM+rIkd8g+EtXHkv/iD4LmfzMOsTPkPFQu//OPub8e1mt6i:DoZtL+EP8LwzMOsTPkPFQu//OKO/

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2436-1-0x0000000000E90000-0x0000000000ED0000-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
2628	powershell.exe
2780	powershell.exe
2600	powershell.exe
2252	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	Delta hack pc.exe

Deletes itself 1 IoCs

pid	Process
2832	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
2832	cmd.exe
2120	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1736	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2120	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2436	Delta hack pc.exe
2628	powershell.exe
2780	powershell.exe
2600	powershell.exe
2320	powershell.exe
2252	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2436	Delta hack pc.exe
Token: SeIncreaseQuotaPrivilege	1732	wmic.exe
Token: SeSecurityPrivilege	1732	wmic.exe
Token: SeTakeOwnershipPrivilege	1732	wmic.exe
Token: SeLoadDriverPrivilege	1732	wmic.exe
Token: SeSystemProfilePrivilege	1732	wmic.exe
Token: SeSystemtimePrivilege	1732	wmic.exe
Token: SeProfSingleProcessPrivilege	1732	wmic.exe
Token: SeIncBasePriorityPrivilege	1732	wmic.exe
Token: SeCreatePagefilePrivilege	1732	wmic.exe
Token: SeBackupPrivilege	1732	wmic.exe
Token: SeRestorePrivilege	1732	wmic.exe
Token: SeShutdownPrivilege	1732	wmic.exe
Token: SeDebugPrivilege	1732	wmic.exe
Token: SeSystemEnvironmentPrivilege	1732	wmic.exe
Token: SeRemoteShutdownPrivilege	1732	wmic.exe
Token: SeUndockPrivilege	1732	wmic.exe
Token: SeManageVolumePrivilege	1732	wmic.exe
Token: 33	1732	wmic.exe
Token: 34	1732	wmic.exe
Token: 35	1732	wmic.exe
Token: SeIncreaseQuotaPrivilege	1732	wmic.exe
Token: SeSecurityPrivilege	1732	wmic.exe
Token: SeTakeOwnershipPrivilege	1732	wmic.exe
Token: SeLoadDriverPrivilege	1732	wmic.exe
Token: SeSystemProfilePrivilege	1732	wmic.exe
Token: SeSystemtimePrivilege	1732	wmic.exe
Token: SeProfSingleProcessPrivilege	1732	wmic.exe
Token: SeIncBasePriorityPrivilege	1732	wmic.exe
Token: SeCreatePagefilePrivilege	1732	wmic.exe
Token: SeBackupPrivilege	1732	wmic.exe
Token: SeRestorePrivilege	1732	wmic.exe
Token: SeShutdownPrivilege	1732	wmic.exe
Token: SeDebugPrivilege	1732	wmic.exe
Token: SeSystemEnvironmentPrivilege	1732	wmic.exe
Token: SeRemoteShutdownPrivilege	1732	wmic.exe
Token: SeUndockPrivilege	1732	wmic.exe
Token: SeManageVolumePrivilege	1732	wmic.exe
Token: 33	1732	wmic.exe
Token: 34	1732	wmic.exe
Token: 35	1732	wmic.exe
Token: SeDebugPrivilege	2628	powershell.exe
Token: SeDebugPrivilege	2780	powershell.exe
Token: SeDebugPrivilege	2600	powershell.exe
Token: SeDebugPrivilege	2320	powershell.exe
Token: SeIncreaseQuotaPrivilege	1228	wmic.exe
Token: SeSecurityPrivilege	1228	wmic.exe
Token: SeTakeOwnershipPrivilege	1228	wmic.exe
Token: SeLoadDriverPrivilege	1228	wmic.exe
Token: SeSystemProfilePrivilege	1228	wmic.exe
Token: SeSystemtimePrivilege	1228	wmic.exe
Token: SeProfSingleProcessPrivilege	1228	wmic.exe
Token: SeIncBasePriorityPrivilege	1228	wmic.exe
Token: SeCreatePagefilePrivilege	1228	wmic.exe
Token: SeBackupPrivilege	1228	wmic.exe
Token: SeRestorePrivilege	1228	wmic.exe
Token: SeShutdownPrivilege	1228	wmic.exe
Token: SeDebugPrivilege	1228	wmic.exe
Token: SeSystemEnvironmentPrivilege	1228	wmic.exe
Token: SeRemoteShutdownPrivilege	1228	wmic.exe
Token: SeUndockPrivilege	1228	wmic.exe
Token: SeManageVolumePrivilege	1228	wmic.exe
Token: 33	1228	wmic.exe
Token: 34	1228	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2436 wrote to memory of 1732	2436	Delta hack pc.exe	31
PID 2436 wrote to memory of 1732	2436	Delta hack pc.exe	31
PID 2436 wrote to memory of 1732	2436	Delta hack pc.exe	31
PID 2436 wrote to memory of 3036	2436	Delta hack pc.exe	34
PID 2436 wrote to memory of 3036	2436	Delta hack pc.exe	34
PID 2436 wrote to memory of 3036	2436	Delta hack pc.exe	34
PID 2436 wrote to memory of 2628	2436	Delta hack pc.exe	36
PID 2436 wrote to memory of 2628	2436	Delta hack pc.exe	36
PID 2436 wrote to memory of 2628	2436	Delta hack pc.exe	36
PID 2436 wrote to memory of 2780	2436	Delta hack pc.exe	38
PID 2436 wrote to memory of 2780	2436	Delta hack pc.exe	38
PID 2436 wrote to memory of 2780	2436	Delta hack pc.exe	38
PID 2436 wrote to memory of 2600	2436	Delta hack pc.exe	40
PID 2436 wrote to memory of 2600	2436	Delta hack pc.exe	40
PID 2436 wrote to memory of 2600	2436	Delta hack pc.exe	40
PID 2436 wrote to memory of 2320	2436	Delta hack pc.exe	42
PID 2436 wrote to memory of 2320	2436	Delta hack pc.exe	42
PID 2436 wrote to memory of 2320	2436	Delta hack pc.exe	42
PID 2436 wrote to memory of 1228	2436	Delta hack pc.exe	44
PID 2436 wrote to memory of 1228	2436	Delta hack pc.exe	44
PID 2436 wrote to memory of 1228	2436	Delta hack pc.exe	44
PID 2436 wrote to memory of 2000	2436	Delta hack pc.exe	46
PID 2436 wrote to memory of 2000	2436	Delta hack pc.exe	46
PID 2436 wrote to memory of 2000	2436	Delta hack pc.exe	46
PID 2436 wrote to memory of 1568	2436	Delta hack pc.exe	48
PID 2436 wrote to memory of 1568	2436	Delta hack pc.exe	48
PID 2436 wrote to memory of 1568	2436	Delta hack pc.exe	48
PID 2436 wrote to memory of 2252	2436	Delta hack pc.exe	50
PID 2436 wrote to memory of 2252	2436	Delta hack pc.exe	50
PID 2436 wrote to memory of 2252	2436	Delta hack pc.exe	50
PID 2436 wrote to memory of 1736	2436	Delta hack pc.exe	52
PID 2436 wrote to memory of 1736	2436	Delta hack pc.exe	52
PID 2436 wrote to memory of 1736	2436	Delta hack pc.exe	52
PID 2436 wrote to memory of 2832	2436	Delta hack pc.exe	54
PID 2436 wrote to memory of 2832	2436	Delta hack pc.exe	54
PID 2436 wrote to memory of 2832	2436	Delta hack pc.exe	54
PID 2832 wrote to memory of 2120	2832	cmd.exe	56
PID 2832 wrote to memory of 2120	2832	cmd.exe	56
PID 2832 wrote to memory of 2120	2832	cmd.exe	56

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3036	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Delta hack pc.exe
"C:\Users\Admin\AppData\Local\Temp\Delta hack pc.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2436
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1732
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Delta hack pc.exe"
  2⤵
  - Views/modifies file attributes
  PID:3036
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Delta hack pc.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2628
- 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:2780
- 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:2600
- 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:2320
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1228
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2000
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1568
- 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:2252
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1736
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Delta hack pc.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2832
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2120

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
7965ff7d46bb27aa4a1c13ded015d68d

SHA1
f70884fb5506eed3e71b0527844741d6bb69da38

SHA256
5857a581950464f8877c70fede9c25d2134662385672ef1b76979a1f39a7db19

SHA512
9850dcbe074212b9eccaea6a5b0dfaee1e2e7c37fe8f663c5290b48b83d46b3fdf95f1e5e2e0910ed0f1d9b16e38f20521eb807701f4e139bf60b30e350b0acb

Download Submit
memory/2252-43-0x0000000002810000-0x0000000002818000-memory.dmp

Filesize
32KB

Download
memory/2436-1-0x0000000000E90000-0x0000000000ED0000-memory.dmp

Filesize
256KB

Download
memory/2436-2-0x000007FEF6180000-0x000007FEF6B6C000-memory.dmp

Filesize
9.9MB

Download
memory/2436-0-0x000007FEF6183000-0x000007FEF6184000-memory.dmp

Filesize
4KB

Download
memory/2436-49-0x000007FEF6180000-0x000007FEF6B6C000-memory.dmp

Filesize
9.9MB

Download
memory/2436-46-0x000007FEF6180000-0x000007FEF6B6C000-memory.dmp

Filesize
9.9MB

Download
memory/2436-45-0x000007FEF6183000-0x000007FEF6184000-memory.dmp

Filesize
4KB

Download
memory/2628-7-0x000000001B790000-0x000000001BA72000-memory.dmp

Filesize
2.9MB

Download
memory/2628-8-0x00000000021A0000-0x00000000021A8000-memory.dmp

Filesize
32KB

Download
memory/2780-15-0x0000000002B30000-0x0000000002B38000-memory.dmp

Filesize
32KB

Download
memory/2780-14-0x000000001B560000-0x000000001B842000-memory.dmp

Filesize
2.9MB

Download