umbral | 10fc7787e75df4375d177ade5d874691e815204bba4034b54a2b053ad26a1f0d

Resubmissions

27-01-2025 03:08

250127-dm6qssxne1 10

26-01-2025 02:14

250126-cn4gdszmcr 10

Analysis

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

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
26-01-2025 02:14

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

mapleC2.exe
Size

229KB
MD5

8fdc5324c6283723749bec8199a6078e
SHA1

d9480e0b5d4dffbc82f542c66d3f0efc0f18c95c
SHA256

10fc7787e75df4375d177ade5d874691e815204bba4034b54a2b053ad26a1f0d
SHA512

f375bec52dfd7f6f86db525a734c9331152975ad43633b77fc2fb0df31c4e3e408410ab14262fc9f6af650f8ae6c1fa15583c7828cdf0b1ade1c9be6548ae3f4
SSDEEP

6144:tloZM0rIkd8g+EtXHkv/iD4JRBJoOJBidHaIJtMVtb8e1mj5i:voZDL+EP8JRBJoOJBidHaIJtMfkg

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2016-1-0x0000000000F90000-0x0000000000FD0000-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
2808	powershell.exe
2596	powershell.exe
1948	powershell.exe
2412	powershell.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
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

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1908	wmic.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2016	mapleC2.exe
2412	powershell.exe
2808	powershell.exe
2596	powershell.exe
2640	powershell.exe
1948	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2016	mapleC2.exe
Token: SeIncreaseQuotaPrivilege	1988	wmic.exe
Token: SeSecurityPrivilege	1988	wmic.exe
Token: SeTakeOwnershipPrivilege	1988	wmic.exe
Token: SeLoadDriverPrivilege	1988	wmic.exe
Token: SeSystemProfilePrivilege	1988	wmic.exe
Token: SeSystemtimePrivilege	1988	wmic.exe
Token: SeProfSingleProcessPrivilege	1988	wmic.exe
Token: SeIncBasePriorityPrivilege	1988	wmic.exe
Token: SeCreatePagefilePrivilege	1988	wmic.exe
Token: SeBackupPrivilege	1988	wmic.exe
Token: SeRestorePrivilege	1988	wmic.exe
Token: SeShutdownPrivilege	1988	wmic.exe
Token: SeDebugPrivilege	1988	wmic.exe
Token: SeSystemEnvironmentPrivilege	1988	wmic.exe
Token: SeRemoteShutdownPrivilege	1988	wmic.exe
Token: SeUndockPrivilege	1988	wmic.exe
Token: SeManageVolumePrivilege	1988	wmic.exe
Token: 33	1988	wmic.exe
Token: 34	1988	wmic.exe
Token: 35	1988	wmic.exe
Token: SeIncreaseQuotaPrivilege	1988	wmic.exe
Token: SeSecurityPrivilege	1988	wmic.exe
Token: SeTakeOwnershipPrivilege	1988	wmic.exe
Token: SeLoadDriverPrivilege	1988	wmic.exe
Token: SeSystemProfilePrivilege	1988	wmic.exe
Token: SeSystemtimePrivilege	1988	wmic.exe
Token: SeProfSingleProcessPrivilege	1988	wmic.exe
Token: SeIncBasePriorityPrivilege	1988	wmic.exe
Token: SeCreatePagefilePrivilege	1988	wmic.exe
Token: SeBackupPrivilege	1988	wmic.exe
Token: SeRestorePrivilege	1988	wmic.exe
Token: SeShutdownPrivilege	1988	wmic.exe
Token: SeDebugPrivilege	1988	wmic.exe
Token: SeSystemEnvironmentPrivilege	1988	wmic.exe
Token: SeRemoteShutdownPrivilege	1988	wmic.exe
Token: SeUndockPrivilege	1988	wmic.exe
Token: SeManageVolumePrivilege	1988	wmic.exe
Token: 33	1988	wmic.exe
Token: 34	1988	wmic.exe
Token: 35	1988	wmic.exe
Token: SeDebugPrivilege	2412	powershell.exe
Token: SeDebugPrivilege	2808	powershell.exe
Token: SeDebugPrivilege	2596	powershell.exe
Token: SeDebugPrivilege	2640	powershell.exe
Token: SeIncreaseQuotaPrivilege	2924	wmic.exe
Token: SeSecurityPrivilege	2924	wmic.exe
Token: SeTakeOwnershipPrivilege	2924	wmic.exe
Token: SeLoadDriverPrivilege	2924	wmic.exe
Token: SeSystemProfilePrivilege	2924	wmic.exe
Token: SeSystemtimePrivilege	2924	wmic.exe
Token: SeProfSingleProcessPrivilege	2924	wmic.exe
Token: SeIncBasePriorityPrivilege	2924	wmic.exe
Token: SeCreatePagefilePrivilege	2924	wmic.exe
Token: SeBackupPrivilege	2924	wmic.exe
Token: SeRestorePrivilege	2924	wmic.exe
Token: SeShutdownPrivilege	2924	wmic.exe
Token: SeDebugPrivilege	2924	wmic.exe
Token: SeSystemEnvironmentPrivilege	2924	wmic.exe
Token: SeRemoteShutdownPrivilege	2924	wmic.exe
Token: SeUndockPrivilege	2924	wmic.exe
Token: SeManageVolumePrivilege	2924	wmic.exe
Token: 33	2924	wmic.exe
Token: 34	2924	wmic.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2016 wrote to memory of 1988	2016	mapleC2.exe	31
PID 2016 wrote to memory of 1988	2016	mapleC2.exe	31
PID 2016 wrote to memory of 1988	2016	mapleC2.exe	31
PID 2016 wrote to memory of 2412	2016	mapleC2.exe	34
PID 2016 wrote to memory of 2412	2016	mapleC2.exe	34
PID 2016 wrote to memory of 2412	2016	mapleC2.exe	34
PID 2016 wrote to memory of 2808	2016	mapleC2.exe	36
PID 2016 wrote to memory of 2808	2016	mapleC2.exe	36
PID 2016 wrote to memory of 2808	2016	mapleC2.exe	36
PID 2016 wrote to memory of 2596	2016	mapleC2.exe	38
PID 2016 wrote to memory of 2596	2016	mapleC2.exe	38
PID 2016 wrote to memory of 2596	2016	mapleC2.exe	38
PID 2016 wrote to memory of 2640	2016	mapleC2.exe	40
PID 2016 wrote to memory of 2640	2016	mapleC2.exe	40
PID 2016 wrote to memory of 2640	2016	mapleC2.exe	40
PID 2016 wrote to memory of 2924	2016	mapleC2.exe	42
PID 2016 wrote to memory of 2924	2016	mapleC2.exe	42
PID 2016 wrote to memory of 2924	2016	mapleC2.exe	42
PID 2016 wrote to memory of 2836	2016	mapleC2.exe	44
PID 2016 wrote to memory of 2836	2016	mapleC2.exe	44
PID 2016 wrote to memory of 2836	2016	mapleC2.exe	44
PID 2016 wrote to memory of 2908	2016	mapleC2.exe	46
PID 2016 wrote to memory of 2908	2016	mapleC2.exe	46
PID 2016 wrote to memory of 2908	2016	mapleC2.exe	46
PID 2016 wrote to memory of 1948	2016	mapleC2.exe	48
PID 2016 wrote to memory of 1948	2016	mapleC2.exe	48
PID 2016 wrote to memory of 1948	2016	mapleC2.exe	48
PID 2016 wrote to memory of 1908	2016	mapleC2.exe	50
PID 2016 wrote to memory of 1908	2016	mapleC2.exe	50
PID 2016 wrote to memory of 1908	2016	mapleC2.exe	50

C:\Users\Admin\AppData\Local\Temp\mapleC2.exe
"C:\Users\Admin\AppData\Local\Temp\mapleC2.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2016
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1988
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\mapleC2.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2412
- 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:2808
- 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:2596
- 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:2640
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2924
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2836
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2908
- 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:1948
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1908

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

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
323ea1be3e789f9c44f666b1df5896da

SHA1
0cfdfa38989ee28ca431e1c90cff91914b00d49f

SHA256
16c0c2a9a79b1f8d3207de08ff49152c76c0e7705f07f3ef428aa70862f240aa

SHA512
5474f1c5a9d286ec6fecb99dd741f9c220177ccef117b4da68de18a5cb8603fec8b28b69066dad81fdd02462d7db4a3dcdbc76aeb7331a8a6a77eb396bc66dc6

Download Submit
memory/1948-42-0x0000000001D10000-0x0000000001D18000-memory.dmp

Filesize
32KB

Download
memory/2016-0-0x000007FEF5C53000-0x000007FEF5C54000-memory.dmp

Filesize
4KB

Download
memory/2016-1-0x0000000000F90000-0x0000000000FD0000-memory.dmp

Filesize
256KB

Download
memory/2016-2-0x000007FEF5C50000-0x000007FEF663C000-memory.dmp

Filesize
9.9MB

Download
memory/2016-46-0x000007FEF5C50000-0x000007FEF663C000-memory.dmp

Filesize
9.9MB

Download
memory/2412-7-0x000000001B820000-0x000000001BB02000-memory.dmp

Filesize
2.9MB

Download
memory/2412-8-0x00000000027E0000-0x00000000027E8000-memory.dmp

Filesize
32KB

Download
memory/2808-14-0x000000001B6D0000-0x000000001B9B2000-memory.dmp

Filesize
2.9MB

Download
memory/2808-15-0x0000000002890000-0x0000000002898000-memory.dmp

Filesize
32KB

Download