umbral | f29f169e410ccc847f78e8df47006a45025ba10f0d517629f80ad73995d614fd

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
20-08-2024 20:38

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

fkgDa.scr.exe
Size

227KB
MD5

57725f9d6fe867414481c9174b761df1
SHA1

498f57a097747aa80a83a2927a74d96c007028c6
SHA256

f29f169e410ccc847f78e8df47006a45025ba10f0d517629f80ad73995d614fd
SHA512

28de892b39cfb8e534c8bec5c2a8f277adb006499930fc6cf00251b5f157033d856dcb41dbc80375a61dc7ffe9eb109e1e00cbc42972b2202f8348daac7b6586
SSDEEP

6144:+loZM9rIkd8g+EtXHkv/iD4UcHZLxCqVUQhTuOLdG2Hb8e1mB1i:ooZOL+EP8UcHZLxCqVUQhTuOLd9Ec

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2088-1-0x0000000000A50000-0x0000000000A90000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

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
1924	powershell.exe
1040	powershell.exe
2676	powershell.exe
2796	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Deletes itself 1 IoCs

pid	Process
3000	cmd.exe

Reads user/profile data of web browsers 2 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

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
8	discord.com
9	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

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
3000	cmd.exe
2008	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2372	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2008	PING.EXE

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1924	powershell.exe
2676	powershell.exe
2796	powershell.exe
1704	powershell.exe
1040	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2088	fkgDa.scr.exe
Token: SeDebugPrivilege	1924	powershell.exe
Token: SeDebugPrivilege	2676	powershell.exe
Token: SeDebugPrivilege	2796	powershell.exe
Token: SeDebugPrivilege	1704	powershell.exe
Token: SeIncreaseQuotaPrivilege	1212	wmic.exe
Token: SeSecurityPrivilege	1212	wmic.exe
Token: SeTakeOwnershipPrivilege	1212	wmic.exe
Token: SeLoadDriverPrivilege	1212	wmic.exe
Token: SeSystemProfilePrivilege	1212	wmic.exe
Token: SeSystemtimePrivilege	1212	wmic.exe
Token: SeProfSingleProcessPrivilege	1212	wmic.exe
Token: SeIncBasePriorityPrivilege	1212	wmic.exe
Token: SeCreatePagefilePrivilege	1212	wmic.exe
Token: SeBackupPrivilege	1212	wmic.exe
Token: SeRestorePrivilege	1212	wmic.exe
Token: SeShutdownPrivilege	1212	wmic.exe
Token: SeDebugPrivilege	1212	wmic.exe
Token: SeSystemEnvironmentPrivilege	1212	wmic.exe
Token: SeRemoteShutdownPrivilege	1212	wmic.exe
Token: SeUndockPrivilege	1212	wmic.exe
Token: SeManageVolumePrivilege	1212	wmic.exe
Token: 33	1212	wmic.exe
Token: 34	1212	wmic.exe
Token: 35	1212	wmic.exe
Token: SeIncreaseQuotaPrivilege	1212	wmic.exe
Token: SeSecurityPrivilege	1212	wmic.exe
Token: SeTakeOwnershipPrivilege	1212	wmic.exe
Token: SeLoadDriverPrivilege	1212	wmic.exe
Token: SeSystemProfilePrivilege	1212	wmic.exe
Token: SeSystemtimePrivilege	1212	wmic.exe
Token: SeProfSingleProcessPrivilege	1212	wmic.exe
Token: SeIncBasePriorityPrivilege	1212	wmic.exe
Token: SeCreatePagefilePrivilege	1212	wmic.exe
Token: SeBackupPrivilege	1212	wmic.exe
Token: SeRestorePrivilege	1212	wmic.exe
Token: SeShutdownPrivilege	1212	wmic.exe
Token: SeDebugPrivilege	1212	wmic.exe
Token: SeSystemEnvironmentPrivilege	1212	wmic.exe
Token: SeRemoteShutdownPrivilege	1212	wmic.exe
Token: SeUndockPrivilege	1212	wmic.exe
Token: SeManageVolumePrivilege	1212	wmic.exe
Token: 33	1212	wmic.exe
Token: 34	1212	wmic.exe
Token: 35	1212	wmic.exe
Token: SeIncreaseQuotaPrivilege	1076	wmic.exe
Token: SeSecurityPrivilege	1076	wmic.exe
Token: SeTakeOwnershipPrivilege	1076	wmic.exe
Token: SeLoadDriverPrivilege	1076	wmic.exe
Token: SeSystemProfilePrivilege	1076	wmic.exe
Token: SeSystemtimePrivilege	1076	wmic.exe
Token: SeProfSingleProcessPrivilege	1076	wmic.exe
Token: SeIncBasePriorityPrivilege	1076	wmic.exe
Token: SeCreatePagefilePrivilege	1076	wmic.exe
Token: SeBackupPrivilege	1076	wmic.exe
Token: SeRestorePrivilege	1076	wmic.exe
Token: SeShutdownPrivilege	1076	wmic.exe
Token: SeDebugPrivilege	1076	wmic.exe
Token: SeSystemEnvironmentPrivilege	1076	wmic.exe
Token: SeRemoteShutdownPrivilege	1076	wmic.exe
Token: SeUndockPrivilege	1076	wmic.exe
Token: SeManageVolumePrivilege	1076	wmic.exe
Token: 33	1076	wmic.exe
Token: 34	1076	wmic.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2088 wrote to memory of 2400	2088	fkgDa.scr.exe	31
PID 2088 wrote to memory of 2400	2088	fkgDa.scr.exe	31
PID 2088 wrote to memory of 2400	2088	fkgDa.scr.exe	31
PID 2088 wrote to memory of 1924	2088	fkgDa.scr.exe	33
PID 2088 wrote to memory of 1924	2088	fkgDa.scr.exe	33
PID 2088 wrote to memory of 1924	2088	fkgDa.scr.exe	33
PID 2088 wrote to memory of 2676	2088	fkgDa.scr.exe	35
PID 2088 wrote to memory of 2676	2088	fkgDa.scr.exe	35
PID 2088 wrote to memory of 2676	2088	fkgDa.scr.exe	35
PID 2088 wrote to memory of 2796	2088	fkgDa.scr.exe	37
PID 2088 wrote to memory of 2796	2088	fkgDa.scr.exe	37
PID 2088 wrote to memory of 2796	2088	fkgDa.scr.exe	37
PID 2088 wrote to memory of 1704	2088	fkgDa.scr.exe	39
PID 2088 wrote to memory of 1704	2088	fkgDa.scr.exe	39
PID 2088 wrote to memory of 1704	2088	fkgDa.scr.exe	39
PID 2088 wrote to memory of 1212	2088	fkgDa.scr.exe	41
PID 2088 wrote to memory of 1212	2088	fkgDa.scr.exe	41
PID 2088 wrote to memory of 1212	2088	fkgDa.scr.exe	41
PID 2088 wrote to memory of 1076	2088	fkgDa.scr.exe	44
PID 2088 wrote to memory of 1076	2088	fkgDa.scr.exe	44
PID 2088 wrote to memory of 1076	2088	fkgDa.scr.exe	44
PID 2088 wrote to memory of 1672	2088	fkgDa.scr.exe	46
PID 2088 wrote to memory of 1672	2088	fkgDa.scr.exe	46
PID 2088 wrote to memory of 1672	2088	fkgDa.scr.exe	46
PID 2088 wrote to memory of 1040	2088	fkgDa.scr.exe	48
PID 2088 wrote to memory of 1040	2088	fkgDa.scr.exe	48
PID 2088 wrote to memory of 1040	2088	fkgDa.scr.exe	48
PID 2088 wrote to memory of 2372	2088	fkgDa.scr.exe	50
PID 2088 wrote to memory of 2372	2088	fkgDa.scr.exe	50
PID 2088 wrote to memory of 2372	2088	fkgDa.scr.exe	50
PID 2088 wrote to memory of 3000	2088	fkgDa.scr.exe	52
PID 2088 wrote to memory of 3000	2088	fkgDa.scr.exe	52
PID 2088 wrote to memory of 3000	2088	fkgDa.scr.exe	52
PID 3000 wrote to memory of 2008	3000	cmd.exe	54
PID 3000 wrote to memory of 2008	3000	cmd.exe	54
PID 3000 wrote to memory of 2008	3000	cmd.exe	54

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2400	attrib.exe

C:\Users\Admin\AppData\Local\Temp\fkgDa.scr.exe
"C:\Users\Admin\AppData\Local\Temp\fkgDa.scr.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2088
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\fkgDa.scr.exe"
  2⤵
  - Views/modifies file attributes
  PID:2400
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\fkgDa.scr.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1924
- 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
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2676
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2796
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1704
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1212
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1076
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1672
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:1040
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2372
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\fkgDa.scr.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3000
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2008

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

Loading Replay Monitor...

Downloads

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

Filesize
7KB

MD5
3c0237e22067ef0be1de7b8de6112f38

SHA1
8cb9bafb0863319c0134459fc53d7335f7f842ea

SHA256
6ba92ec3e98e488f4e31ab7214b36dec7fe495e92506745801e046b307de4e18

SHA512
2f12dc250491659ded2a4e72e7c30fd43cf93ff39bab0c69647815797b42e69e7c2f66afa0a457c248adfafb57838b4d9db6a11fef22cb7e326deef4b1b9c60f

Download Submit
memory/1924-7-0x000007FEEDB7E000-0x000007FEEDB7F000-memory.dmp

Filesize
4KB

Download
memory/1924-8-0x000000001B5E0000-0x000000001B8C2000-memory.dmp

Filesize
2.9MB

Download
memory/1924-9-0x00000000027A0000-0x00000000027A8000-memory.dmp

Filesize
32KB

Download
memory/1924-10-0x000007FEED8C0000-0x000007FEEE25D000-memory.dmp

Filesize
9.6MB

Download
memory/1924-11-0x000007FEED8C0000-0x000007FEEE25D000-memory.dmp

Filesize
9.6MB

Download
memory/1924-12-0x000007FEED8C0000-0x000007FEEE25D000-memory.dmp

Filesize
9.6MB

Download
memory/2088-0-0x000007FEF5E13000-0x000007FEF5E14000-memory.dmp

Filesize
4KB

Download
memory/2088-2-0x000007FEF5E10000-0x000007FEF67FC000-memory.dmp

Filesize
9.9MB

Download
memory/2088-1-0x0000000000A50000-0x0000000000A90000-memory.dmp

Filesize
256KB

Download
memory/2088-50-0x000007FEF5E10000-0x000007FEF67FC000-memory.dmp

Filesize
9.9MB

Download
memory/2676-18-0x000000001B5B0000-0x000000001B892000-memory.dmp

Filesize
2.9MB

Download
memory/2676-19-0x0000000002000000-0x0000000002008000-memory.dmp

Filesize
32KB

Download