umbral | 331faea175ced9239aa38c09f75cf1cba4a331461268315b76c94bb7c7a4b8d8

Analysis

max time kernel
149s
max time network
156s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
12/01/2025, 06:10

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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/files/0x0009000000016c23-13.dat	family_umbral
behavioral1/memory/2464-15-0x0000000000980000-0x00000000009C0000-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
1784	powershell.exe
1148	powershell.exe
1556	powershell.exe
2892	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
2600	6z2guuz0ldkdgc1o.exe
2464	MoonHub.exe

Loads dropped DLL 1 IoCs

pid	Process
2568	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 6 IoCs

Web Service

T1102

flow	ioc
21	discord.com
58	0.tcp.eu.ngrok.io
73	0.tcp.eu.ngrok.io
6	0.tcp.eu.ngrok.io
13	0.tcp.eu.ngrok.io
20	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
9	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
2628	cmd.exe
524	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2300	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
524	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2464	MoonHub.exe
2892	powershell.exe
1784	powershell.exe
1148	powershell.exe
2420	powershell.exe
1556	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2168	AcroRd32.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2600	6z2guuz0ldkdgc1o.exe
Token: SeDebugPrivilege	2464	MoonHub.exe
Token: SeIncBasePriorityPrivilege	2600	6z2guuz0ldkdgc1o.exe
Token: SeIncreaseQuotaPrivilege	1388	wmic.exe
Token: SeSecurityPrivilege	1388	wmic.exe
Token: SeTakeOwnershipPrivilege	1388	wmic.exe
Token: SeLoadDriverPrivilege	1388	wmic.exe
Token: SeSystemProfilePrivilege	1388	wmic.exe
Token: SeSystemtimePrivilege	1388	wmic.exe
Token: SeProfSingleProcessPrivilege	1388	wmic.exe
Token: SeIncBasePriorityPrivilege	1388	wmic.exe
Token: SeCreatePagefilePrivilege	1388	wmic.exe
Token: SeBackupPrivilege	1388	wmic.exe
Token: SeRestorePrivilege	1388	wmic.exe
Token: SeShutdownPrivilege	1388	wmic.exe
Token: SeDebugPrivilege	1388	wmic.exe
Token: SeSystemEnvironmentPrivilege	1388	wmic.exe
Token: SeRemoteShutdownPrivilege	1388	wmic.exe
Token: SeUndockPrivilege	1388	wmic.exe
Token: SeManageVolumePrivilege	1388	wmic.exe
Token: 33	1388	wmic.exe
Token: 34	1388	wmic.exe
Token: 35	1388	wmic.exe
Token: SeIncreaseQuotaPrivilege	1388	wmic.exe
Token: SeSecurityPrivilege	1388	wmic.exe
Token: SeTakeOwnershipPrivilege	1388	wmic.exe
Token: SeLoadDriverPrivilege	1388	wmic.exe
Token: SeSystemProfilePrivilege	1388	wmic.exe
Token: SeSystemtimePrivilege	1388	wmic.exe
Token: SeProfSingleProcessPrivilege	1388	wmic.exe
Token: SeIncBasePriorityPrivilege	1388	wmic.exe
Token: SeCreatePagefilePrivilege	1388	wmic.exe
Token: SeBackupPrivilege	1388	wmic.exe
Token: SeRestorePrivilege	1388	wmic.exe
Token: SeShutdownPrivilege	1388	wmic.exe
Token: SeDebugPrivilege	1388	wmic.exe
Token: SeSystemEnvironmentPrivilege	1388	wmic.exe
Token: SeRemoteShutdownPrivilege	1388	wmic.exe
Token: SeUndockPrivilege	1388	wmic.exe
Token: SeManageVolumePrivilege	1388	wmic.exe
Token: 33	1388	wmic.exe
Token: 34	1388	wmic.exe
Token: 35	1388	wmic.exe
Token: SeDebugPrivilege	2892	powershell.exe
Token: SeDebugPrivilege	1784	powershell.exe
Token: SeDebugPrivilege	1148	powershell.exe
Token: SeDebugPrivilege	2420	powershell.exe
Token: SeIncreaseQuotaPrivilege	1788	wmic.exe
Token: SeSecurityPrivilege	1788	wmic.exe
Token: SeTakeOwnershipPrivilege	1788	wmic.exe
Token: SeLoadDriverPrivilege	1788	wmic.exe
Token: SeSystemProfilePrivilege	1788	wmic.exe
Token: SeSystemtimePrivilege	1788	wmic.exe
Token: SeProfSingleProcessPrivilege	1788	wmic.exe
Token: SeIncBasePriorityPrivilege	1788	wmic.exe
Token: SeCreatePagefilePrivilege	1788	wmic.exe
Token: SeBackupPrivilege	1788	wmic.exe
Token: SeRestorePrivilege	1788	wmic.exe
Token: SeShutdownPrivilege	1788	wmic.exe
Token: SeDebugPrivilege	1788	wmic.exe
Token: SeSystemEnvironmentPrivilege	1788	wmic.exe
Token: SeRemoteShutdownPrivilege	1788	wmic.exe
Token: SeUndockPrivilege	1788	wmic.exe
Token: SeManageVolumePrivilege	1788	wmic.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2168	AcroRd32.exe
2168	AcroRd32.exe

Suspicious use of WriteProcessMemory 52 IoCs

description	pid	Process	procid_target
PID 2568 wrote to memory of 2600	2568	resembleC2.exe	30
PID 2568 wrote to memory of 2600	2568	resembleC2.exe	30
PID 2568 wrote to memory of 2600	2568	resembleC2.exe	30
PID 2568 wrote to memory of 2976	2568	resembleC2.exe	31
PID 2568 wrote to memory of 2976	2568	resembleC2.exe	31
PID 2568 wrote to memory of 2976	2568	resembleC2.exe	31
PID 2568 wrote to memory of 2464	2568	resembleC2.exe	32
PID 2568 wrote to memory of 2464	2568	resembleC2.exe	32
PID 2568 wrote to memory of 2464	2568	resembleC2.exe	32
PID 2976 wrote to memory of 2168	2976	rundll32.exe	34
PID 2976 wrote to memory of 2168	2976	rundll32.exe	34
PID 2976 wrote to memory of 2168	2976	rundll32.exe	34
PID 2976 wrote to memory of 2168	2976	rundll32.exe	34
PID 2464 wrote to memory of 1388	2464	MoonHub.exe	36
PID 2464 wrote to memory of 1388	2464	MoonHub.exe	36
PID 2464 wrote to memory of 1388	2464	MoonHub.exe	36
PID 2464 wrote to memory of 556	2464	MoonHub.exe	38
PID 2464 wrote to memory of 556	2464	MoonHub.exe	38
PID 2464 wrote to memory of 556	2464	MoonHub.exe	38
PID 2464 wrote to memory of 2892	2464	MoonHub.exe	40
PID 2464 wrote to memory of 2892	2464	MoonHub.exe	40
PID 2464 wrote to memory of 2892	2464	MoonHub.exe	40
PID 2464 wrote to memory of 1784	2464	MoonHub.exe	42
PID 2464 wrote to memory of 1784	2464	MoonHub.exe	42
PID 2464 wrote to memory of 1784	2464	MoonHub.exe	42
PID 2464 wrote to memory of 1148	2464	MoonHub.exe	44
PID 2464 wrote to memory of 1148	2464	MoonHub.exe	44
PID 2464 wrote to memory of 1148	2464	MoonHub.exe	44
PID 2464 wrote to memory of 2420	2464	MoonHub.exe	46
PID 2464 wrote to memory of 2420	2464	MoonHub.exe	46
PID 2464 wrote to memory of 2420	2464	MoonHub.exe	46
PID 2464 wrote to memory of 1788	2464	MoonHub.exe	48
PID 2464 wrote to memory of 1788	2464	MoonHub.exe	48
PID 2464 wrote to memory of 1788	2464	MoonHub.exe	48
PID 2464 wrote to memory of 2624	2464	MoonHub.exe	50
PID 2464 wrote to memory of 2624	2464	MoonHub.exe	50
PID 2464 wrote to memory of 2624	2464	MoonHub.exe	50
PID 2464 wrote to memory of 2140	2464	MoonHub.exe	52
PID 2464 wrote to memory of 2140	2464	MoonHub.exe	52
PID 2464 wrote to memory of 2140	2464	MoonHub.exe	52
PID 2464 wrote to memory of 1556	2464	MoonHub.exe	54
PID 2464 wrote to memory of 1556	2464	MoonHub.exe	54
PID 2464 wrote to memory of 1556	2464	MoonHub.exe	54
PID 2464 wrote to memory of 2300	2464	MoonHub.exe	56
PID 2464 wrote to memory of 2300	2464	MoonHub.exe	56
PID 2464 wrote to memory of 2300	2464	MoonHub.exe	56
PID 2464 wrote to memory of 2628	2464	MoonHub.exe	58
PID 2464 wrote to memory of 2628	2464	MoonHub.exe	58
PID 2464 wrote to memory of 2628	2464	MoonHub.exe	58
PID 2628 wrote to memory of 524	2628	cmd.exe	60
PID 2628 wrote to memory of 524	2628	cmd.exe	60
PID 2628 wrote to memory of 524	2628	cmd.exe	60

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
556	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:2568
- 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:2600
- 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:2976
- - 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:2168
- 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:2464
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:1388
- - C:\Windows\system32\attrib.exe
    "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\MoonHub.exe"
    3⤵
    - Views/modifies file attributes
    PID:556
- - 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:2892
- - 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:1784
- - 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:1148
- - 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:2420
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" os get Caption
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:1788
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" computersystem get totalphysicalmemory
    3⤵
    PID:2624
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" csproduct get uuid
    3⤵
    PID:2140
- - 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:1556
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic" path win32_VideoController get name
    3⤵
    - Detects videocard installed
    PID:2300
- - 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:2628
  - - C:\Windows\system32\PING.EXE
      ping localhost
      4⤵
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:524

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\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
bfa21b8f3a06e006ef7a289045535286

SHA1
0598506c45c41058ab867a77492738cf8e547cd6

SHA256
afd0d1a3c0d214dcc99a11476dbac7b4bb7d1087199de4f326b2f1dbd0725848

SHA512
a5c9e79f6b9f640184fe97fc8353f9dff0b145baa863b31c7e7fb942849eed87b14403dae865a3bd40b09dd8c35335970ccb4c0f8a99af9347db867658f7c5f5

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

Filesize
7KB

MD5
6b56d190714cd19f656cc4b28e9694fb

SHA1
dd5c4a8c217f40b42f108dd6ae2033a20fdfb090

SHA256
cf64f66cbf402e91bee86f1e23fca52e4d5b295dc7e24bc8982a863657fc6534

SHA512
1680068a38e56e6bedce08c4462d6f505e7b338510d73de98e5078111dac03cf240561da33387417bea52873aa9052ccbb5472d3f3c00a8a7d880f90ff767187

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

Filesize
45KB

MD5
8c7d2f0a936dbe6d0899d40171ffb668

SHA1
0b22fcd904f3b0fa2555a32a2635423668fc4616

SHA256
85f5f5acb54c30efd4f84c0f11c834b7dab98c5bb7357bddcd29fbe5babc4db6

SHA512
463a48ec2752fd002e82dfe555abd03fc666a523da99e0e848788eeff6f98d06d36a360cfd7ad70d342bb4c90a49131a3428f1404d17e04a7fe5a1022c1faa65

Download Submit
memory/1556-80-0x000000001B140000-0x000000001B422000-memory.dmp

Filesize
2.9MB

Download
memory/1784-30-0x000000001B330000-0x000000001B612000-memory.dmp

Filesize
2.9MB

Download
memory/1784-31-0x0000000001F60000-0x0000000001F68000-memory.dmp

Filesize
32KB

Download
memory/2464-15-0x0000000000980000-0x00000000009C0000-memory.dmp

Filesize
256KB

Download
memory/2568-16-0x000007FEF5650000-0x000007FEF603C000-memory.dmp

Filesize
9.9MB

Download
memory/2568-0-0x000007FEF5653000-0x000007FEF5654000-memory.dmp

Filesize
4KB

Download
memory/2568-1-0x0000000000AC0000-0x0000000000AE6000-memory.dmp

Filesize
152KB

Download
memory/2600-17-0x000007FEF5650000-0x000007FEF603C000-memory.dmp

Filesize
9.9MB

Download
memory/2600-67-0x000007FEF5650000-0x000007FEF603C000-memory.dmp

Filesize
9.9MB

Download
memory/2600-11-0x000000013F130000-0x000000013F140000-memory.dmp

Filesize
64KB

Download
memory/2892-23-0x000000001B200000-0x000000001B4E2000-memory.dmp

Filesize
2.9MB

Download
memory/2892-24-0x0000000002560000-0x0000000002568000-memory.dmp

Filesize
32KB

Download