umbral | 0c70a683dc7964b4a37b655928d87b172043c8582c3cfce38f69901ec53b3b88

Analysis

max time kernel
150s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
27/01/2025, 18:10

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General

Target

Slinky/slink/load.exe
Size

17.8MB
MD5

86d4579d1dbfd7be291f5d198d805398
SHA1

8636bb288af7549f10d50eba8f8a4489ffee4222
SHA256

d0e0881cc1edb247c39628fbcaec00fae6ec3617bde0869538aed888f4e6a63a
SHA512

0ae111f7761778429b6e93ecbd4547a3280c52dfba781c42cf37e046cfe440d69d49a3caa8d3a58f6013b644e80e908fdbd7415340b764f6a4900806aceb877c
SSDEEP

393216:YQsUy4Ln/msXQDkaxfqTJ9h7yXVHM5dzI2UeHqrCMMDcbiK3:nsun/3GTxW9h7G5M7z2eHqeMMDcWK3

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 2 IoCs

resource	yara_rule
behavioral1/files/0x000a000000018678-6.dat	family_umbral
behavioral1/memory/2684-14-0x0000000000EE0000-0x0000000000F20000-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

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

execution

PowerShell

T1059.001

pid	Process
2180	powershell.exe
2592	powershell.exe
2740	powershell.exe
1816	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
2684	Slinky_Dependences.exe
2976	load.exe

Loads dropped DLL 2 IoCs

pid	Process
1268	load.exe
872	Process not Found

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

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

System Information Discovery
T1082

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
2428	cmd.exe
1372	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1316	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1372	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2684	Slinky_Dependences.exe
2180	powershell.exe
2592	powershell.exe
2740	powershell.exe
1088	powershell.exe
1816	powershell.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe
2976	load.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2684	Slinky_Dependences.exe
Token: SeIncreaseQuotaPrivilege	2600	wmic.exe
Token: SeSecurityPrivilege	2600	wmic.exe
Token: SeTakeOwnershipPrivilege	2600	wmic.exe
Token: SeLoadDriverPrivilege	2600	wmic.exe
Token: SeSystemProfilePrivilege	2600	wmic.exe
Token: SeSystemtimePrivilege	2600	wmic.exe
Token: SeProfSingleProcessPrivilege	2600	wmic.exe
Token: SeIncBasePriorityPrivilege	2600	wmic.exe
Token: SeCreatePagefilePrivilege	2600	wmic.exe
Token: SeBackupPrivilege	2600	wmic.exe
Token: SeRestorePrivilege	2600	wmic.exe
Token: SeShutdownPrivilege	2600	wmic.exe
Token: SeDebugPrivilege	2600	wmic.exe
Token: SeSystemEnvironmentPrivilege	2600	wmic.exe
Token: SeRemoteShutdownPrivilege	2600	wmic.exe
Token: SeUndockPrivilege	2600	wmic.exe
Token: SeManageVolumePrivilege	2600	wmic.exe
Token: 33	2600	wmic.exe
Token: 34	2600	wmic.exe
Token: 35	2600	wmic.exe
Token: SeIncreaseQuotaPrivilege	2600	wmic.exe
Token: SeSecurityPrivilege	2600	wmic.exe
Token: SeTakeOwnershipPrivilege	2600	wmic.exe
Token: SeLoadDriverPrivilege	2600	wmic.exe
Token: SeSystemProfilePrivilege	2600	wmic.exe
Token: SeSystemtimePrivilege	2600	wmic.exe
Token: SeProfSingleProcessPrivilege	2600	wmic.exe
Token: SeIncBasePriorityPrivilege	2600	wmic.exe
Token: SeCreatePagefilePrivilege	2600	wmic.exe
Token: SeBackupPrivilege	2600	wmic.exe
Token: SeRestorePrivilege	2600	wmic.exe
Token: SeShutdownPrivilege	2600	wmic.exe
Token: SeDebugPrivilege	2600	wmic.exe
Token: SeSystemEnvironmentPrivilege	2600	wmic.exe
Token: SeRemoteShutdownPrivilege	2600	wmic.exe
Token: SeUndockPrivilege	2600	wmic.exe
Token: SeManageVolumePrivilege	2600	wmic.exe
Token: 33	2600	wmic.exe
Token: 34	2600	wmic.exe
Token: 35	2600	wmic.exe
Token: SeDebugPrivilege	2180	powershell.exe
Token: SeDebugPrivilege	2592	powershell.exe
Token: SeDebugPrivilege	2740	powershell.exe
Token: SeDebugPrivilege	1088	powershell.exe
Token: SeIncreaseQuotaPrivilege	772	wmic.exe
Token: SeSecurityPrivilege	772	wmic.exe
Token: SeTakeOwnershipPrivilege	772	wmic.exe
Token: SeLoadDriverPrivilege	772	wmic.exe
Token: SeSystemProfilePrivilege	772	wmic.exe
Token: SeSystemtimePrivilege	772	wmic.exe
Token: SeProfSingleProcessPrivilege	772	wmic.exe
Token: SeIncBasePriorityPrivilege	772	wmic.exe
Token: SeCreatePagefilePrivilege	772	wmic.exe
Token: SeBackupPrivilege	772	wmic.exe
Token: SeRestorePrivilege	772	wmic.exe
Token: SeShutdownPrivilege	772	wmic.exe
Token: SeDebugPrivilege	772	wmic.exe
Token: SeSystemEnvironmentPrivilege	772	wmic.exe
Token: SeRemoteShutdownPrivilege	772	wmic.exe
Token: SeUndockPrivilege	772	wmic.exe
Token: SeManageVolumePrivilege	772	wmic.exe
Token: 33	772	wmic.exe
Token: 34	772	wmic.exe

Suspicious use of WriteProcessMemory 45 IoCs

description	pid	Process	procid_target
PID 1268 wrote to memory of 2684	1268	load.exe	30
PID 1268 wrote to memory of 2684	1268	load.exe	30
PID 1268 wrote to memory of 2684	1268	load.exe	30
PID 2684 wrote to memory of 2600	2684	Slinky_Dependences.exe	31
PID 2684 wrote to memory of 2600	2684	Slinky_Dependences.exe	31
PID 2684 wrote to memory of 2600	2684	Slinky_Dependences.exe	31
PID 2684 wrote to memory of 3064	2684	Slinky_Dependences.exe	34
PID 2684 wrote to memory of 3064	2684	Slinky_Dependences.exe	34
PID 2684 wrote to memory of 3064	2684	Slinky_Dependences.exe	34
PID 2684 wrote to memory of 2180	2684	Slinky_Dependences.exe	36
PID 2684 wrote to memory of 2180	2684	Slinky_Dependences.exe	36
PID 2684 wrote to memory of 2180	2684	Slinky_Dependences.exe	36
PID 2684 wrote to memory of 2592	2684	Slinky_Dependences.exe	38
PID 2684 wrote to memory of 2592	2684	Slinky_Dependences.exe	38
PID 2684 wrote to memory of 2592	2684	Slinky_Dependences.exe	38
PID 2684 wrote to memory of 2740	2684	Slinky_Dependences.exe	40
PID 2684 wrote to memory of 2740	2684	Slinky_Dependences.exe	40
PID 2684 wrote to memory of 2740	2684	Slinky_Dependences.exe	40
PID 2684 wrote to memory of 1088	2684	Slinky_Dependences.exe	42
PID 2684 wrote to memory of 1088	2684	Slinky_Dependences.exe	42
PID 2684 wrote to memory of 1088	2684	Slinky_Dependences.exe	42
PID 2684 wrote to memory of 772	2684	Slinky_Dependences.exe	44
PID 2684 wrote to memory of 772	2684	Slinky_Dependences.exe	44
PID 2684 wrote to memory of 772	2684	Slinky_Dependences.exe	44
PID 2684 wrote to memory of 3000	2684	Slinky_Dependences.exe	46
PID 2684 wrote to memory of 3000	2684	Slinky_Dependences.exe	46
PID 2684 wrote to memory of 3000	2684	Slinky_Dependences.exe	46
PID 2684 wrote to memory of 1044	2684	Slinky_Dependences.exe	48
PID 2684 wrote to memory of 1044	2684	Slinky_Dependences.exe	48
PID 2684 wrote to memory of 1044	2684	Slinky_Dependences.exe	48
PID 2684 wrote to memory of 1816	2684	Slinky_Dependences.exe	50
PID 2684 wrote to memory of 1816	2684	Slinky_Dependences.exe	50
PID 2684 wrote to memory of 1816	2684	Slinky_Dependences.exe	50
PID 2684 wrote to memory of 1316	2684	Slinky_Dependences.exe	52
PID 2684 wrote to memory of 1316	2684	Slinky_Dependences.exe	52
PID 2684 wrote to memory of 1316	2684	Slinky_Dependences.exe	52
PID 2684 wrote to memory of 2428	2684	Slinky_Dependences.exe	54
PID 2684 wrote to memory of 2428	2684	Slinky_Dependences.exe	54
PID 2684 wrote to memory of 2428	2684	Slinky_Dependences.exe	54
PID 2428 wrote to memory of 1372	2428	cmd.exe	56
PID 2428 wrote to memory of 1372	2428	cmd.exe	56
PID 2428 wrote to memory of 1372	2428	cmd.exe	56
PID 1268 wrote to memory of 2976	1268	load.exe	57
PID 1268 wrote to memory of 2976	1268	load.exe	57
PID 1268 wrote to memory of 2976	1268	load.exe	57

Views/modifies file attributes 1 TTPs 1 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
3064	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Slinky\slink\load.exe
"C:\Users\Admin\AppData\Local\Temp\Slinky\slink\load.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1268
- C:\Users\Admin\AppData\Local\Temp\RarSFX0\Slinky_Dependences.exe
  "C:\Users\Admin\AppData\Local\Temp\RarSFX0\Slinky_Dependences.exe"
  2⤵
  - Drops file in Drivers directory
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2684
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2600
- - C:\Windows\system32\attrib.exe
    "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\RarSFX0\Slinky_Dependences.exe"
    3⤵
    - Views/modifies file attributes
    PID:3064
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\RarSFX0\Slinky_Dependences.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2180
- - 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:2592
- - 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:2740
- - 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:1088
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" os get Caption
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:772
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" computersystem get totalphysicalmemory
    3⤵
    PID:3000
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" csproduct get uuid
    3⤵
    PID:1044
- - 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:1816
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic" path win32_VideoController get name
    3⤵
    - Detects videocard installed
    PID:1316
- - C:\Windows\system32\cmd.exe
    "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\RarSFX0\Slinky_Dependences.exe" && pause
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Suspicious use of WriteProcessMemory
    PID:2428
  - - C:\Windows\system32\PING.EXE
      ping localhost
      4⤵
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:1372
- C:\Users\Admin\AppData\Local\Temp\RarSFX0\load.exe
  "C:\Users\Admin\AppData\Local\Temp\RarSFX0\load.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  PID:2976

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\RarSFX0\Slinky_Dependences.exe

Filesize
229KB

MD5
f8286606b9be55be61dc21f3c8684bce

SHA1
d5768631ef573e5532e39820744ec3948cba0188

SHA256
069ec421fc87771c32dbbda60b242fde015a5a9492da07357edfbef984de1dd7

SHA512
1d14fd7a2435d7be4a12b6cde7eba6d06a388384ed9dd4227988a048912f44d2e932d9ea0c4794414ace615998224cb28d6c299c4dae4b0471381e101ac6c6a4

Download Submit
C:\Users\Admin\AppData\Local\Temp\RarSFX0\load.exe

Filesize
18.4MB

MD5
38019371c7cfc54d0c08629da0384a1f

SHA1
87509b8aa5549f22b53362588c624b010cfa5b26

SHA256
d4f6bfde46ea2394570619fa89f8cdc8ac00b297179fe8831558530ec48492f1

SHA512
75f204fa1be253a68678ec7a6637a8db1b02346fb429365500427e493fd0c2b2d2b24a4ae30de3f777c239af507c141f979b6012c8b394f663d073f2850d682d

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

Filesize
7KB

MD5
7babec6cc6d3b9b72606d06d1dfc11cb

SHA1
7bb2e5efef1e14d408f16e1933fe8514110270f2

SHA256
36df1e38000b5b5623b44c480ea65920f730a63aab4f3d82a8174295b001d571

SHA512
926afb38c467bdab786a119affbe46262136478ebbb1be2aeef23badd20665fe3b922606b042225ee2fc38a906656cd2407fe98db04f15d180757935af92682b

Download Submit
memory/1816-55-0x0000000001D90000-0x0000000001D98000-memory.dmp

Filesize
32KB

Download
memory/2180-20-0x000000001B640000-0x000000001B922000-memory.dmp

Filesize
2.9MB

Download
memory/2180-21-0x0000000001D90000-0x0000000001D98000-memory.dmp

Filesize
32KB

Download
memory/2592-27-0x000000001B730000-0x000000001BA12000-memory.dmp

Filesize
2.9MB

Download
memory/2592-28-0x0000000001DA0000-0x0000000001DA8000-memory.dmp

Filesize
32KB

Download
memory/2684-13-0x000007FEF5B33000-0x000007FEF5B34000-memory.dmp

Filesize
4KB

Download
memory/2684-14-0x0000000000EE0000-0x0000000000F20000-memory.dmp

Filesize
256KB

Download
memory/2684-15-0x000007FEF5B30000-0x000007FEF651C000-memory.dmp

Filesize
9.9MB

Download
memory/2684-59-0x000007FEF5B30000-0x000007FEF651C000-memory.dmp

Filesize
9.9MB

Download