umbral | e8ca7b16e9cf6d75c2cda06a34f001d9da94a2de407758837aa77dc5d79b22f9

Analysis

max time kernel
149s
max time network
121s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
30-12-2024 09:51

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General

Target

Slinky/load.exe
Size

17.6MB
MD5

fe9f1266ea6a28f18c8165e625d3f9ce
SHA1

99ef957f3eb31480257be461ebebc200f5018b94
SHA256

6808d24ab0ea5dbafec1ef8bc5b01421aeb1f9817972bc6df415ed935461de61
SHA512

fabe0e4d25bb2bd74dcf2ea71dd5163b87a117cd28809bd05ebc8ad08bfcf4682236fb980a6e5affd0c8737acae1b7c0f14ed01bc734c273660c8b0c7038eb82
SSDEEP

393216:YQtOfDiM8m+J6/lSZRNw2nuNS3NzOZRumEJyb6BF0j6bxPJCX:DO+2/UZRN0QdzOZAmEGGj1PJCX

Score

10^/10

umbral execution spyware stealer

Malware Config

Extracted

Family

umbral

https://discord.com/api/webhooks/1322057974423879721/ppnP8pHnxtdpRKXhmSvr5P5fSuReYWB-wOyejU-UoO8N-THaRLkzhWKfqcTncT10ncbf

Signatures

Detect Umbral payload 2 IoCs

resource	yara_rule
behavioral1/files/0x002e000000014733-5.dat	family_umbral
behavioral1/memory/2664-7-0x0000000001330000-0x0000000001370000-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
2984	powershell.exe
336	powershell.exe
2840	powershell.exe
2364	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
2664	Slinky Injector.exe
308	load.exe

Loads dropped DLL 1 IoCs

pid	Process
2884	load.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

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

System Information Discovery
T1082

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2504	wmic.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
308	load.exe
308	load.exe
308	load.exe
308	load.exe
2664	Slinky Injector.exe
2984	powershell.exe
336	powershell.exe
308	load.exe
2840	powershell.exe
1244	powershell.exe
308	load.exe
308	load.exe
2364	powershell.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe
308	load.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2664	Slinky Injector.exe
Token: SeIncreaseQuotaPrivilege	2568	wmic.exe
Token: SeSecurityPrivilege	2568	wmic.exe
Token: SeTakeOwnershipPrivilege	2568	wmic.exe
Token: SeLoadDriverPrivilege	2568	wmic.exe
Token: SeSystemProfilePrivilege	2568	wmic.exe
Token: SeSystemtimePrivilege	2568	wmic.exe
Token: SeProfSingleProcessPrivilege	2568	wmic.exe
Token: SeIncBasePriorityPrivilege	2568	wmic.exe
Token: SeCreatePagefilePrivilege	2568	wmic.exe
Token: SeBackupPrivilege	2568	wmic.exe
Token: SeRestorePrivilege	2568	wmic.exe
Token: SeShutdownPrivilege	2568	wmic.exe
Token: SeDebugPrivilege	2568	wmic.exe
Token: SeSystemEnvironmentPrivilege	2568	wmic.exe
Token: SeRemoteShutdownPrivilege	2568	wmic.exe
Token: SeUndockPrivilege	2568	wmic.exe
Token: SeManageVolumePrivilege	2568	wmic.exe
Token: 33	2568	wmic.exe
Token: 34	2568	wmic.exe
Token: 35	2568	wmic.exe
Token: SeIncreaseQuotaPrivilege	2568	wmic.exe
Token: SeSecurityPrivilege	2568	wmic.exe
Token: SeTakeOwnershipPrivilege	2568	wmic.exe
Token: SeLoadDriverPrivilege	2568	wmic.exe
Token: SeSystemProfilePrivilege	2568	wmic.exe
Token: SeSystemtimePrivilege	2568	wmic.exe
Token: SeProfSingleProcessPrivilege	2568	wmic.exe
Token: SeIncBasePriorityPrivilege	2568	wmic.exe
Token: SeCreatePagefilePrivilege	2568	wmic.exe
Token: SeBackupPrivilege	2568	wmic.exe
Token: SeRestorePrivilege	2568	wmic.exe
Token: SeShutdownPrivilege	2568	wmic.exe
Token: SeDebugPrivilege	2568	wmic.exe
Token: SeSystemEnvironmentPrivilege	2568	wmic.exe
Token: SeRemoteShutdownPrivilege	2568	wmic.exe
Token: SeUndockPrivilege	2568	wmic.exe
Token: SeManageVolumePrivilege	2568	wmic.exe
Token: 33	2568	wmic.exe
Token: 34	2568	wmic.exe
Token: 35	2568	wmic.exe
Token: SeDebugPrivilege	2984	powershell.exe
Token: SeDebugPrivilege	336	powershell.exe
Token: SeDebugPrivilege	2840	powershell.exe
Token: SeDebugPrivilege	1244	powershell.exe
Token: SeIncreaseQuotaPrivilege	1872	wmic.exe
Token: SeSecurityPrivilege	1872	wmic.exe
Token: SeTakeOwnershipPrivilege	1872	wmic.exe
Token: SeLoadDriverPrivilege	1872	wmic.exe
Token: SeSystemProfilePrivilege	1872	wmic.exe
Token: SeSystemtimePrivilege	1872	wmic.exe
Token: SeProfSingleProcessPrivilege	1872	wmic.exe
Token: SeIncBasePriorityPrivilege	1872	wmic.exe
Token: SeCreatePagefilePrivilege	1872	wmic.exe
Token: SeBackupPrivilege	1872	wmic.exe
Token: SeRestorePrivilege	1872	wmic.exe
Token: SeShutdownPrivilege	1872	wmic.exe
Token: SeDebugPrivilege	1872	wmic.exe
Token: SeSystemEnvironmentPrivilege	1872	wmic.exe
Token: SeRemoteShutdownPrivilege	1872	wmic.exe
Token: SeUndockPrivilege	1872	wmic.exe
Token: SeManageVolumePrivilege	1872	wmic.exe
Token: 33	1872	wmic.exe
Token: 34	1872	wmic.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2884 wrote to memory of 2664	2884	load.exe	28
PID 2884 wrote to memory of 2664	2884	load.exe	28
PID 2884 wrote to memory of 2664	2884	load.exe	28
PID 2884 wrote to memory of 308	2884	load.exe	29
PID 2884 wrote to memory of 308	2884	load.exe	29
PID 2884 wrote to memory of 308	2884	load.exe	29
PID 2664 wrote to memory of 2568	2664	Slinky Injector.exe	31
PID 2664 wrote to memory of 2568	2664	Slinky Injector.exe	31
PID 2664 wrote to memory of 2568	2664	Slinky Injector.exe	31
PID 2664 wrote to memory of 2984	2664	Slinky Injector.exe	34
PID 2664 wrote to memory of 2984	2664	Slinky Injector.exe	34
PID 2664 wrote to memory of 2984	2664	Slinky Injector.exe	34
PID 2664 wrote to memory of 336	2664	Slinky Injector.exe	36
PID 2664 wrote to memory of 336	2664	Slinky Injector.exe	36
PID 2664 wrote to memory of 336	2664	Slinky Injector.exe	36
PID 2664 wrote to memory of 2840	2664	Slinky Injector.exe	38
PID 2664 wrote to memory of 2840	2664	Slinky Injector.exe	38
PID 2664 wrote to memory of 2840	2664	Slinky Injector.exe	38
PID 2664 wrote to memory of 1244	2664	Slinky Injector.exe	40
PID 2664 wrote to memory of 1244	2664	Slinky Injector.exe	40
PID 2664 wrote to memory of 1244	2664	Slinky Injector.exe	40
PID 2664 wrote to memory of 1872	2664	Slinky Injector.exe	42
PID 2664 wrote to memory of 1872	2664	Slinky Injector.exe	42
PID 2664 wrote to memory of 1872	2664	Slinky Injector.exe	42
PID 2664 wrote to memory of 900	2664	Slinky Injector.exe	44
PID 2664 wrote to memory of 900	2664	Slinky Injector.exe	44
PID 2664 wrote to memory of 900	2664	Slinky Injector.exe	44
PID 2664 wrote to memory of 1752	2664	Slinky Injector.exe	46
PID 2664 wrote to memory of 1752	2664	Slinky Injector.exe	46
PID 2664 wrote to memory of 1752	2664	Slinky Injector.exe	46
PID 2664 wrote to memory of 2364	2664	Slinky Injector.exe	48
PID 2664 wrote to memory of 2364	2664	Slinky Injector.exe	48
PID 2664 wrote to memory of 2364	2664	Slinky Injector.exe	48
PID 2664 wrote to memory of 2504	2664	Slinky Injector.exe	50
PID 2664 wrote to memory of 2504	2664	Slinky Injector.exe	50
PID 2664 wrote to memory of 2504	2664	Slinky Injector.exe	50

C:\Users\Admin\AppData\Local\Temp\Slinky\load.exe
"C:\Users\Admin\AppData\Local\Temp\Slinky\load.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2884
- C:\Users\Admin\AppData\Local\Temp\Slinky Injector.exe
  "C:\Users\Admin\AppData\Local\Temp\Slinky Injector.exe"
  2⤵
  - Drops file in Drivers directory
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2664
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2568
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Slinky Injector.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2984
- - 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:336
- - 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:2840
- - 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:1244
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" os get Caption
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:1872
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" computersystem get totalphysicalmemory
    3⤵
    PID:900
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" csproduct get uuid
    3⤵
    PID:1752
- - 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:2364
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic" path win32_VideoController get name
    3⤵
    - Detects videocard installed
    PID:2504
- C:\Users\Admin\AppData\Local\Temp\load.exe
  "C:\Users\Admin\AppData\Local\Temp\load.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  PID:308

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\Slinky Injector.exe

Filesize
228KB

MD5
22c66a144f89f219d9f7bef81578dd48

SHA1
ad7235aadd9583fd423a5f36a5c65a6213d23fff

SHA256
9c1f1a7105e258fc4b5df94ba02bd41ddbe55bc82c88cd718fa5b2fac5969f00

SHA512
78316d05a92f3c4d9be0f18d1bbc86529961917d83cb00de36a396e96b2357564e354e9cfdc364f08d7e96bdd8602296e6df6eb0d2ea21029c7a45e116edb7a0

Download Submit
C:\Users\Admin\AppData\Local\Temp\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
4138f60e98017d959184a47002ab8947

SHA1
372c98a21ebee6fb5c31a77df738f12ba4327da6

SHA256
e706bd54f2cd1e0eb636c6f293a84f2ff0585a0d5d466471d314cc904edcb3fc

SHA512
e1870cb70e8870ebe84acc0f6432ce4bf20c3f2dd67710f1ba94f6a67e6225ee3848d4af3b2c4ce01b0eb2c99361f628a5b81cdf7ac3ca41bf261160600a7a03

Download Submit
memory/336-29-0x0000000001E80000-0x0000000001E88000-memory.dmp

Filesize
32KB

Download
memory/336-28-0x000000001B750000-0x000000001BA32000-memory.dmp

Filesize
2.9MB

Download
memory/2364-59-0x0000000002790000-0x0000000002798000-memory.dmp

Filesize
32KB

Download
memory/2664-64-0x000007FEF56A0000-0x000007FEF608C000-memory.dmp

Filesize
9.9MB

Download
memory/2664-7-0x0000000001330000-0x0000000001370000-memory.dmp

Filesize
256KB

Download
memory/2664-9-0x000007FEF56A0000-0x000007FEF608C000-memory.dmp

Filesize
9.9MB

Download
memory/2664-12-0x000007FEF56A0000-0x000007FEF608C000-memory.dmp

Filesize
9.9MB

Download
memory/2884-8-0x000007FEF56A0000-0x000007FEF608C000-memory.dmp

Filesize
9.9MB

Download
memory/2884-16-0x000007FEF56A0000-0x000007FEF608C000-memory.dmp

Filesize
9.9MB

Download
memory/2884-0-0x000007FEF56A3000-0x000007FEF56A4000-memory.dmp

Filesize
4KB

Download
memory/2884-1-0x00000000011B0000-0x000000000234E000-memory.dmp

Filesize
17.6MB

Download
memory/2984-22-0x0000000002790000-0x0000000002798000-memory.dmp

Filesize
32KB

Download
memory/2984-21-0x000000001B740000-0x000000001BA22000-memory.dmp

Filesize
2.9MB

Download