umbral | e8ca7b16e9cf6d75c2cda06a34f001d9da94a2de407758837aa77dc5d79b22f9

Analysis

max time kernel
61s
max time network
34s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
30/12/2024, 09:38

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General

Target

Slinky (infected).zip
Size

35.0MB
MD5

dd023f6d41f8f2f06f959da73f6155de
SHA1

64c0cb253073cb4314a6b8491d05e6338d41b6c1
SHA256

e8ca7b16e9cf6d75c2cda06a34f001d9da94a2de407758837aa77dc5d79b22f9
SHA512

04dbd52a1f19623d14d4d501840690a107b3b8141404cccda5b5477a5bb60ef4e5eea5e6954305b5d34382a38894dc27bfe0b2fa1b90b15ddea9ec1475915380
SSDEEP

786432:JFUtju4TxpFDi94Z9dF76v6NhEzGZ1I73hsSACyeCBDC:nYjra9mtDVIrhHvoC

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 2 IoCs

resource	yara_rule
behavioral1/files/0x0008000000023ca7-15.dat	family_umbral
behavioral1/memory/4528-22-0x000002AB973F0000-0x000002AB97430000-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
2808	powershell.exe
5016	powershell.exe
4200	powershell.exe
3004	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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	load.exe

Executes dropped EXE 3 IoCs

pid	Process
2724	load.exe
4528	Slinky Injector.exe
2268	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
29	discord.com
30	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
22	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
2232	wmic.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2268	load.exe
2268	load.exe
4528	Slinky Injector.exe
2808	powershell.exe
2808	powershell.exe
2268	load.exe
2268	load.exe
5016	powershell.exe
5016	powershell.exe
4200	powershell.exe
4200	powershell.exe
2268	load.exe
2268	load.exe
3756	powershell.exe
3756	powershell.exe
2268	load.exe
2268	load.exe
3004	powershell.exe
3004	powershell.exe
3004	powershell.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe
2268	load.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4176	7zFM.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeRestorePrivilege	4176	7zFM.exe
Token: 35	4176	7zFM.exe
Token: SeSecurityPrivilege	4176	7zFM.exe
Token: SeDebugPrivilege	4528	Slinky Injector.exe
Token: SeIncreaseQuotaPrivilege	3500	wmic.exe
Token: SeSecurityPrivilege	3500	wmic.exe
Token: SeTakeOwnershipPrivilege	3500	wmic.exe
Token: SeLoadDriverPrivilege	3500	wmic.exe
Token: SeSystemProfilePrivilege	3500	wmic.exe
Token: SeSystemtimePrivilege	3500	wmic.exe
Token: SeProfSingleProcessPrivilege	3500	wmic.exe
Token: SeIncBasePriorityPrivilege	3500	wmic.exe
Token: SeCreatePagefilePrivilege	3500	wmic.exe
Token: SeBackupPrivilege	3500	wmic.exe
Token: SeRestorePrivilege	3500	wmic.exe
Token: SeShutdownPrivilege	3500	wmic.exe
Token: SeDebugPrivilege	3500	wmic.exe
Token: SeSystemEnvironmentPrivilege	3500	wmic.exe
Token: SeRemoteShutdownPrivilege	3500	wmic.exe
Token: SeUndockPrivilege	3500	wmic.exe
Token: SeManageVolumePrivilege	3500	wmic.exe
Token: 33	3500	wmic.exe
Token: 34	3500	wmic.exe
Token: 35	3500	wmic.exe
Token: 36	3500	wmic.exe
Token: SeIncreaseQuotaPrivilege	3500	wmic.exe
Token: SeSecurityPrivilege	3500	wmic.exe
Token: SeTakeOwnershipPrivilege	3500	wmic.exe
Token: SeLoadDriverPrivilege	3500	wmic.exe
Token: SeSystemProfilePrivilege	3500	wmic.exe
Token: SeSystemtimePrivilege	3500	wmic.exe
Token: SeProfSingleProcessPrivilege	3500	wmic.exe
Token: SeIncBasePriorityPrivilege	3500	wmic.exe
Token: SeCreatePagefilePrivilege	3500	wmic.exe
Token: SeBackupPrivilege	3500	wmic.exe
Token: SeRestorePrivilege	3500	wmic.exe
Token: SeShutdownPrivilege	3500	wmic.exe
Token: SeDebugPrivilege	3500	wmic.exe
Token: SeSystemEnvironmentPrivilege	3500	wmic.exe
Token: SeRemoteShutdownPrivilege	3500	wmic.exe
Token: SeUndockPrivilege	3500	wmic.exe
Token: SeManageVolumePrivilege	3500	wmic.exe
Token: 33	3500	wmic.exe
Token: 34	3500	wmic.exe
Token: 35	3500	wmic.exe
Token: 36	3500	wmic.exe
Token: SeDebugPrivilege	2808	powershell.exe
Token: SeDebugPrivilege	5016	powershell.exe
Token: SeDebugPrivilege	4200	powershell.exe
Token: SeDebugPrivilege	3756	powershell.exe
Token: SeIncreaseQuotaPrivilege	4504	wmic.exe
Token: SeSecurityPrivilege	4504	wmic.exe
Token: SeTakeOwnershipPrivilege	4504	wmic.exe
Token: SeLoadDriverPrivilege	4504	wmic.exe
Token: SeSystemProfilePrivilege	4504	wmic.exe
Token: SeSystemtimePrivilege	4504	wmic.exe
Token: SeProfSingleProcessPrivilege	4504	wmic.exe
Token: SeIncBasePriorityPrivilege	4504	wmic.exe
Token: SeCreatePagefilePrivilege	4504	wmic.exe
Token: SeBackupPrivilege	4504	wmic.exe
Token: SeRestorePrivilege	4504	wmic.exe
Token: SeShutdownPrivilege	4504	wmic.exe
Token: SeDebugPrivilege	4504	wmic.exe
Token: SeSystemEnvironmentPrivilege	4504	wmic.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
4176	7zFM.exe
4176	7zFM.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2724 wrote to memory of 4528	2724	load.exe	91
PID 2724 wrote to memory of 4528	2724	load.exe	91
PID 2724 wrote to memory of 2268	2724	load.exe	92
PID 2724 wrote to memory of 2268	2724	load.exe	92
PID 4528 wrote to memory of 3500	4528	Slinky Injector.exe	94
PID 4528 wrote to memory of 3500	4528	Slinky Injector.exe	94
PID 4528 wrote to memory of 2808	4528	Slinky Injector.exe	97
PID 4528 wrote to memory of 2808	4528	Slinky Injector.exe	97
PID 4528 wrote to memory of 5016	4528	Slinky Injector.exe	99
PID 4528 wrote to memory of 5016	4528	Slinky Injector.exe	99
PID 4528 wrote to memory of 4200	4528	Slinky Injector.exe	101
PID 4528 wrote to memory of 4200	4528	Slinky Injector.exe	101
PID 4528 wrote to memory of 3756	4528	Slinky Injector.exe	103
PID 4528 wrote to memory of 3756	4528	Slinky Injector.exe	103
PID 4528 wrote to memory of 4504	4528	Slinky Injector.exe	107
PID 4528 wrote to memory of 4504	4528	Slinky Injector.exe	107
PID 4528 wrote to memory of 1432	4528	Slinky Injector.exe	109
PID 4528 wrote to memory of 1432	4528	Slinky Injector.exe	109
PID 4528 wrote to memory of 1700	4528	Slinky Injector.exe	111
PID 4528 wrote to memory of 1700	4528	Slinky Injector.exe	111
PID 4528 wrote to memory of 3004	4528	Slinky Injector.exe	113
PID 4528 wrote to memory of 3004	4528	Slinky Injector.exe	113
PID 4528 wrote to memory of 2232	4528	Slinky Injector.exe	115
PID 4528 wrote to memory of 2232	4528	Slinky Injector.exe	115

C:\Program Files\7-Zip\7zFM.exe
"C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\Slinky (infected).zip"
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:4176

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:3692

C:\Users\Admin\Desktop\Slinky\load.exe
"C:\Users\Admin\Desktop\Slinky\load.exe"
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2724
- 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:4528
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:3500
- - 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:2808
- - 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:5016
- - 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:4200
- - 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:3756
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" os get Caption
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:4504
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" computersystem get totalphysicalmemory
    3⤵
    PID:1432
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" csproduct get uuid
    3⤵
    PID:1700
- - 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:3004
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic" path win32_VideoController get name
    3⤵
    - Detects videocard installed
    PID:2232
- C:\Users\Admin\AppData\Local\Temp\load.exe
  "C:\Users\Admin\AppData\Local\Temp\load.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  PID:2268

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

Query Registry

T1012

System Information Discovery

T1082

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\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
ca58d1913d3261f116a299095e04f734

SHA1
941d13d0c8c65adb6513f23991acfa0d62facdea

SHA256
755daf72f2f5e983abb009c3b1eef4c7c660999f5ff581545bbcae7088c17c69

SHA512
87b0d8c9a5348235e9ad6416e09665764db1af408bf763857dc40e39411fa0cf405e3e8b9f0b8540c72aa874059d1dee865aa0cff8dba0fde5779ec9480b5e40

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
948B

MD5
07d142044fb78e359c794180a9c6fdff

SHA1
8a7155f93a53ff1b7f382a4ccb3f58ff2f88808e

SHA256
2af8c3ca529953085ca25f69d9142964e2ce5508665c14f3533a47d254fed3ea

SHA512
356edd3598c09b765c3de325bc47c5c8ae7fcfd87e8c58e12e8bb6437f1d7ce58310e06c4d64336815833e280f2e61c288edb09508c4f29876d28b0d602aeb78

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
276798eeb29a49dc6e199768bc9c2e71

SHA1
5fdc8ccb897ac2df7476fbb07517aca5b7a6205b

SHA256
cd0a1056e8f1b6cb5cb328532239d802f4e2aa8f8fcdc0fcb487684bd68e0dcc

SHA512
0d34fce64bbefc57d64fa6e03ca886952263d5f24df9c1c4cce6a1e8f5a47a9a21e9820f8d38caa7f7b43a52336ce00b738ea18419aaa7c788b72e04ce19e4f2

Download Submit
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\__PSScriptPolicyTest_fqfh3coe.fdd.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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\Desktop\Slinky\load.exe

Filesize
17.6MB

MD5
fe9f1266ea6a28f18c8165e625d3f9ce

SHA1
99ef957f3eb31480257be461ebebc200f5018b94

SHA256
6808d24ab0ea5dbafec1ef8bc5b01421aeb1f9817972bc6df415ed935461de61

SHA512
fabe0e4d25bb2bd74dcf2ea71dd5163b87a117cd28809bd05ebc8ad08bfcf4682236fb980a6e5affd0c8737acae1b7c0f14ed01bc734c273660c8b0c7038eb82

Download Submit
memory/2724-8-0x00007FFE84253000-0x00007FFE84255000-memory.dmp

Filesize
8KB

Download
memory/2724-31-0x00007FFE84250000-0x00007FFE84D11000-memory.dmp

Filesize
10.8MB

Download
memory/2724-11-0x00007FFE84250000-0x00007FFE84D11000-memory.dmp

Filesize
10.8MB

Download
memory/2724-9-0x00000000004A0000-0x000000000163E000-memory.dmp

Filesize
17.6MB

Download
memory/2808-38-0x000002153B8B0000-0x000002153B8D2000-memory.dmp

Filesize
136KB

Download
memory/4528-60-0x000002AB99070000-0x000002AB9908E000-memory.dmp

Filesize
120KB

Download
memory/4528-59-0x000002AB990A0000-0x000002AB990F0000-memory.dmp

Filesize
320KB

Download
memory/4528-58-0x000002AB99170000-0x000002AB991E6000-memory.dmp

Filesize
472KB

Download
memory/4528-97-0x000002AB990F0000-0x000002AB990FA000-memory.dmp

Filesize
40KB

Download
memory/4528-98-0x000002AB99140000-0x000002AB99152000-memory.dmp

Filesize
72KB

Download
memory/4528-22-0x000002AB973F0000-0x000002AB97430000-memory.dmp

Filesize
256KB

Download