umbral | 331faea175ced9239aa38c09f75cf1cba4a331461268315b76c94bb7c7a4b8d8

Analysis

max time kernel
103s
max time network
150s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
12-01-2025 05:11

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General

Target

resembleC2.exe
Size

128KB
MD5

4c8044c83f60465eae3cc16d7c858085
SHA1

bc837ba36a8f244283483210215a11607f05fb63
SHA256

331faea175ced9239aa38c09f75cf1cba4a331461268315b76c94bb7c7a4b8d8
SHA512

f4783ae1591dafc44b1731c34dfced82e5285099a4066b6492e063b1ca5edb4a0916fcad0617b38c0fc754c304d932879cf3014bfce83c0b9a7219f8bc737432
SSDEEP

3072:oRt4KXzdjBFUxzV4NsFYGvL9JjyVcUuyTRc8R:q4gRjBF4SKFYMLbjxUBRc8

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Extracted

Family

umbral

https://discord.com/api/webhooks/1326652489054818346/f_cBTMEYAkXYcTbEkW-MUwYrefMORTfuoofsZ5ymJ5yR8BQpohmaCuB-PwAuIP1xAUKw

Signatures

Detect Umbral payload 2 IoCs

resource	yara_rule
behavioral1/memory/2848-16-0x00000000008C0000-0x0000000000900000-memory.dmp	family_umbral
behavioral1/files/0x000900000001756e-15.dat	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

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

execution

PowerShell

T1059.001

pid	Process
2320	powershell.exe
1084	powershell.exe
2684	powershell.exe
1864	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
2968	6z2guuz0ldkdgc1o.exe
2848	MoonHub.exe

Loads dropped DLL 1 IoCs

pid	Process
2172	resembleC2.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 3 IoCs

Web Service

T1102

flow	ioc
7	0.tcp.eu.ngrok.io
14	discord.com
15	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
10	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AcroRd32.exe

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
1536	cmd.exe
1668	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1588	wmic.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000_Classes\Local Settings	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1668	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2848	MoonHub.exe
2320	powershell.exe
1084	powershell.exe
2684	powershell.exe
1148	powershell.exe
1864	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1616	AcroRd32.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2848	MoonHub.exe
Token: SeDebugPrivilege	2968	6z2guuz0ldkdgc1o.exe
Token: SeIncBasePriorityPrivilege	2968	6z2guuz0ldkdgc1o.exe
Token: SeIncreaseQuotaPrivilege	820	wmic.exe
Token: SeSecurityPrivilege	820	wmic.exe
Token: SeTakeOwnershipPrivilege	820	wmic.exe
Token: SeLoadDriverPrivilege	820	wmic.exe
Token: SeSystemProfilePrivilege	820	wmic.exe
Token: SeSystemtimePrivilege	820	wmic.exe
Token: SeProfSingleProcessPrivilege	820	wmic.exe
Token: SeIncBasePriorityPrivilege	820	wmic.exe
Token: SeCreatePagefilePrivilege	820	wmic.exe
Token: SeBackupPrivilege	820	wmic.exe
Token: SeRestorePrivilege	820	wmic.exe
Token: SeShutdownPrivilege	820	wmic.exe
Token: SeDebugPrivilege	820	wmic.exe
Token: SeSystemEnvironmentPrivilege	820	wmic.exe
Token: SeRemoteShutdownPrivilege	820	wmic.exe
Token: SeUndockPrivilege	820	wmic.exe
Token: SeManageVolumePrivilege	820	wmic.exe
Token: 33	820	wmic.exe
Token: 34	820	wmic.exe
Token: 35	820	wmic.exe
Token: SeIncreaseQuotaPrivilege	820	wmic.exe
Token: SeSecurityPrivilege	820	wmic.exe
Token: SeTakeOwnershipPrivilege	820	wmic.exe
Token: SeLoadDriverPrivilege	820	wmic.exe
Token: SeSystemProfilePrivilege	820	wmic.exe
Token: SeSystemtimePrivilege	820	wmic.exe
Token: SeProfSingleProcessPrivilege	820	wmic.exe
Token: SeIncBasePriorityPrivilege	820	wmic.exe
Token: SeCreatePagefilePrivilege	820	wmic.exe
Token: SeBackupPrivilege	820	wmic.exe
Token: SeRestorePrivilege	820	wmic.exe
Token: SeShutdownPrivilege	820	wmic.exe
Token: SeDebugPrivilege	820	wmic.exe
Token: SeSystemEnvironmentPrivilege	820	wmic.exe
Token: SeRemoteShutdownPrivilege	820	wmic.exe
Token: SeUndockPrivilege	820	wmic.exe
Token: SeManageVolumePrivilege	820	wmic.exe
Token: 33	820	wmic.exe
Token: 34	820	wmic.exe
Token: 35	820	wmic.exe
Token: SeDebugPrivilege	2320	powershell.exe
Token: SeDebugPrivilege	1084	powershell.exe
Token: SeDebugPrivilege	2684	powershell.exe
Token: SeDebugPrivilege	1148	powershell.exe
Token: SeIncreaseQuotaPrivilege	552	wmic.exe
Token: SeSecurityPrivilege	552	wmic.exe
Token: SeTakeOwnershipPrivilege	552	wmic.exe
Token: SeLoadDriverPrivilege	552	wmic.exe
Token: SeSystemProfilePrivilege	552	wmic.exe
Token: SeSystemtimePrivilege	552	wmic.exe
Token: SeProfSingleProcessPrivilege	552	wmic.exe
Token: SeIncBasePriorityPrivilege	552	wmic.exe
Token: SeCreatePagefilePrivilege	552	wmic.exe
Token: SeBackupPrivilege	552	wmic.exe
Token: SeRestorePrivilege	552	wmic.exe
Token: SeShutdownPrivilege	552	wmic.exe
Token: SeDebugPrivilege	552	wmic.exe
Token: SeSystemEnvironmentPrivilege	552	wmic.exe
Token: SeRemoteShutdownPrivilege	552	wmic.exe
Token: SeUndockPrivilege	552	wmic.exe
Token: SeManageVolumePrivilege	552	wmic.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1616	AcroRd32.exe
1616	AcroRd32.exe

Suspicious use of WriteProcessMemory 52 IoCs

description	pid	Process	procid_target
PID 2172 wrote to memory of 2968	2172	resembleC2.exe	29
PID 2172 wrote to memory of 2968	2172	resembleC2.exe	29
PID 2172 wrote to memory of 2968	2172	resembleC2.exe	29
PID 2172 wrote to memory of 2116	2172	resembleC2.exe	30
PID 2172 wrote to memory of 2116	2172	resembleC2.exe	30
PID 2172 wrote to memory of 2116	2172	resembleC2.exe	30
PID 2172 wrote to memory of 2848	2172	resembleC2.exe	31
PID 2172 wrote to memory of 2848	2172	resembleC2.exe	31
PID 2172 wrote to memory of 2848	2172	resembleC2.exe	31
PID 2116 wrote to memory of 1616	2116	rundll32.exe	33
PID 2116 wrote to memory of 1616	2116	rundll32.exe	33
PID 2116 wrote to memory of 1616	2116	rundll32.exe	33
PID 2116 wrote to memory of 1616	2116	rundll32.exe	33
PID 2848 wrote to memory of 820	2848	MoonHub.exe	34
PID 2848 wrote to memory of 820	2848	MoonHub.exe	34
PID 2848 wrote to memory of 820	2848	MoonHub.exe	34
PID 2848 wrote to memory of 1360	2848	MoonHub.exe	36
PID 2848 wrote to memory of 1360	2848	MoonHub.exe	36
PID 2848 wrote to memory of 1360	2848	MoonHub.exe	36
PID 2848 wrote to memory of 2320	2848	MoonHub.exe	38
PID 2848 wrote to memory of 2320	2848	MoonHub.exe	38
PID 2848 wrote to memory of 2320	2848	MoonHub.exe	38
PID 2848 wrote to memory of 1084	2848	MoonHub.exe	40
PID 2848 wrote to memory of 1084	2848	MoonHub.exe	40
PID 2848 wrote to memory of 1084	2848	MoonHub.exe	40
PID 2848 wrote to memory of 2684	2848	MoonHub.exe	42
PID 2848 wrote to memory of 2684	2848	MoonHub.exe	42
PID 2848 wrote to memory of 2684	2848	MoonHub.exe	42
PID 2848 wrote to memory of 1148	2848	MoonHub.exe	44
PID 2848 wrote to memory of 1148	2848	MoonHub.exe	44
PID 2848 wrote to memory of 1148	2848	MoonHub.exe	44
PID 2848 wrote to memory of 552	2848	MoonHub.exe	46
PID 2848 wrote to memory of 552	2848	MoonHub.exe	46
PID 2848 wrote to memory of 552	2848	MoonHub.exe	46
PID 2848 wrote to memory of 1656	2848	MoonHub.exe	48
PID 2848 wrote to memory of 1656	2848	MoonHub.exe	48
PID 2848 wrote to memory of 1656	2848	MoonHub.exe	48
PID 2848 wrote to memory of 2648	2848	MoonHub.exe	50
PID 2848 wrote to memory of 2648	2848	MoonHub.exe	50
PID 2848 wrote to memory of 2648	2848	MoonHub.exe	50
PID 2848 wrote to memory of 1864	2848	MoonHub.exe	52
PID 2848 wrote to memory of 1864	2848	MoonHub.exe	52
PID 2848 wrote to memory of 1864	2848	MoonHub.exe	52
PID 2848 wrote to memory of 1588	2848	MoonHub.exe	54
PID 2848 wrote to memory of 1588	2848	MoonHub.exe	54
PID 2848 wrote to memory of 1588	2848	MoonHub.exe	54
PID 2848 wrote to memory of 1536	2848	MoonHub.exe	56
PID 2848 wrote to memory of 1536	2848	MoonHub.exe	56
PID 2848 wrote to memory of 1536	2848	MoonHub.exe	56
PID 1536 wrote to memory of 1668	1536	cmd.exe	58
PID 1536 wrote to memory of 1668	1536	cmd.exe	58
PID 1536 wrote to memory of 1668	1536	cmd.exe	58

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1360	attrib.exe

C:\Users\Admin\AppData\Local\Temp\resembleC2.exe
"C:\Users\Admin\AppData\Local\Temp\resembleC2.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2172
- C:\Users\Admin\AppData\Local\Temp\6z2guuz0ldkdgc1o.exe
  "C:\Users\Admin\AppData\Local\Temp\6z2guuz0ldkdgc1o.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2968
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\resemble.py
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2116
- - C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
    "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\resemble.py"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:1616
- C:\Users\Admin\AppData\Local\Temp\MoonHub.exe
  "C:\Users\Admin\AppData\Local\Temp\MoonHub.exe"
  2⤵
  - Drops file in Drivers directory
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2848
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:820
- - C:\Windows\system32\attrib.exe
    "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\MoonHub.exe"
    3⤵
    - Views/modifies file attributes
    PID:1360
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\MoonHub.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2320
- - 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
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1084
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
    3⤵
    - 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
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1148
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" os get Caption
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:552
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" computersystem get totalphysicalmemory
    3⤵
    PID:1656
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" csproduct get uuid
    3⤵
    PID:2648
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    PID:1864
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic" path win32_VideoController get name
    3⤵
    - Detects videocard installed
    PID:1588
- - C:\Windows\system32\cmd.exe
    "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\MoonHub.exe" && pause
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Suspicious use of WriteProcessMemory
    PID:1536
  - - C:\Windows\system32\PING.EXE
      ping localhost
      4⤵
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:1668

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 Location Discovery

T1614

System Language Discovery

T1614.001

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\Local\Temp\Cab1C2A.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\MoonHub.exe

Filesize
231KB

MD5
f70b5e56a09af292d4e909c547f9c8c0

SHA1
577883bdbe8dc9582e15e7a1212b1fe432bafce3

SHA256
8fd22c5acb3144dbaa5ab3f9dd5901eb6f3beef67e72ea431246c6a790c067de

SHA512
e54ccb56aa6473abd3530493933d5164f2dff02076e0f03443382f02d177a52e318d8d0f432e6a3fb5620eaffd09f2dbf6ccbf9698ba149b149c594fa162d879

Download Submit
C:\Users\Admin\AppData\Local\Temp\resemble.py

Filesize
27KB

MD5
23f1fabaef532d89fcb6d5bb14a36ef3

SHA1
679a82ed172d49f298bf07b6fa0de9b6c2ce0046

SHA256
e4410bc67b1ee8af2df456713b85040917b8cf749fb7d660feeb625b25ec9c51

SHA512
96e2baa6ce0220b9ad167b60220c683d5b080a9ba9a2e4d320aae6989f4aa2d241f8078e69bdd2da39a20d9b57ae84240da912d29e5e1db36cc90cf6a0537458

Download Submit
C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
24c3c5ddead554d2c3a00a142ae5bbbf

SHA1
9fc43c418b6bd50f219842ab260a57be27907013

SHA256
c11a425ab7ceaaa4a4884348630ce94302b902b1ca4a617aa5d314bb49357adc

SHA512
cecb5e78381fee3c7b3353ff13bda162b07d62dfff7c6f95f0c1e02f15e3a2e6955eca96d0f756c49ad3122edfe493c72a7aa59be74143990fa6244c722da85f

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

Filesize
7KB

MD5
9b54008186d589c901520b42269329c3

SHA1
85b7a7751827c519456dc6f9654131b310edf191

SHA256
4fde5f8d6ccc464859a3ebfe4584e7e33c0e646ecfe3862198afc5d0db42dbbd

SHA512
e9d1fc705e4f17c91da7e5156794f1c590c68728b85930f6c30eb9b948ee2b08804f2956405900be0a4d8682fd9746d487e370a21a8a63b36bcd93795dee9bea

Download Submit
\Users\Admin\AppData\Local\Temp\6z2guuz0ldkdgc1o.exe

Filesize
45KB

MD5
8c7d2f0a936dbe6d0899d40171ffb668

SHA1
0b22fcd904f3b0fa2555a32a2635423668fc4616

SHA256
85f5f5acb54c30efd4f84c0f11c834b7dab98c5bb7357bddcd29fbe5babc4db6

SHA512
463a48ec2752fd002e82dfe555abd03fc666a523da99e0e848788eeff6f98d06d36a360cfd7ad70d342bb4c90a49131a3428f1404d17e04a7fe5a1022c1faa65

Download Submit
memory/1084-48-0x000000001B3B0000-0x000000001B692000-memory.dmp

Filesize
2.9MB

Download
memory/1084-64-0x0000000002220000-0x0000000002228000-memory.dmp

Filesize
32KB

Download
memory/2172-17-0x000007FEF5F00000-0x000007FEF68EC000-memory.dmp

Filesize
9.9MB

Download
memory/2172-13-0x000007FEF5F00000-0x000007FEF68EC000-memory.dmp

Filesize
9.9MB

Download
memory/2172-0-0x000007FEF5F03000-0x000007FEF5F04000-memory.dmp

Filesize
4KB

Download
memory/2172-1-0x0000000000160000-0x0000000000186000-memory.dmp

Filesize
152KB

Download
memory/2320-40-0x000000001B2B0000-0x000000001B592000-memory.dmp

Filesize
2.9MB

Download
memory/2320-41-0x0000000001D90000-0x0000000001D98000-memory.dmp

Filesize
32KB

Download
memory/2684-79-0x000000001B230000-0x000000001B512000-memory.dmp

Filesize
2.9MB

Download
memory/2848-16-0x00000000008C0000-0x0000000000900000-memory.dmp

Filesize
256KB

Download
memory/2968-18-0x000007FEF5F00000-0x000007FEF68EC000-memory.dmp

Filesize
9.9MB

Download
memory/2968-47-0x000007FEF5F00000-0x000007FEF68EC000-memory.dmp

Filesize
9.9MB

Download
memory/2968-9-0x000000013F160000-0x000000013F170000-memory.dmp

Filesize
64KB

Download