umbral | c4943ea4fbfe0cb85961446f99020cd60789b1557f73adb5b5f66b25e936ce69

Analysis

max time kernel
29s
max time network
18s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
11-09-2024 23:53

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General

Target

Eval.gg.exe
Size

231KB
MD5

28aa75839a6f5f64e82139f18dd6331b
SHA1

511fd8d498f9c4e333aa7397ed0f8e26ac7ba159
SHA256

c4943ea4fbfe0cb85961446f99020cd60789b1557f73adb5b5f66b25e936ce69
SHA512

2259e8c91ef2e1a5cd56c77ebe9f8fa6a2071671d9c5447a45e1381abb8498745a63b781510cba1d5de258404a601b5a2742bb4cb6cf3cc69a3c5453cb470564
SSDEEP

6144:hloZM+rIkd8g+EtXHkv/iD4tx/GEKtFuxr20VJgBlb8e1m/3i:ToZtL+EP8tx/GEKtFuxr20VJgzYS

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2236-1-0x0000000000A40000-0x0000000000A80000-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

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3048	powershell.exe
2832	powershell.exe
2116	powershell.exe
2688	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Deletes itself 1 IoCs

pid	Process
444	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
7	discord.com
8	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
4	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
444	cmd.exe
1264	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1276	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1264	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2236	Eval.gg.exe
2688	powershell.exe
3048	powershell.exe
2832	powershell.exe
2004	powershell.exe
2116	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2236	Eval.gg.exe
Token: SeIncreaseQuotaPrivilege	2700	wmic.exe
Token: SeSecurityPrivilege	2700	wmic.exe
Token: SeTakeOwnershipPrivilege	2700	wmic.exe
Token: SeLoadDriverPrivilege	2700	wmic.exe
Token: SeSystemProfilePrivilege	2700	wmic.exe
Token: SeSystemtimePrivilege	2700	wmic.exe
Token: SeProfSingleProcessPrivilege	2700	wmic.exe
Token: SeIncBasePriorityPrivilege	2700	wmic.exe
Token: SeCreatePagefilePrivilege	2700	wmic.exe
Token: SeBackupPrivilege	2700	wmic.exe
Token: SeRestorePrivilege	2700	wmic.exe
Token: SeShutdownPrivilege	2700	wmic.exe
Token: SeDebugPrivilege	2700	wmic.exe
Token: SeSystemEnvironmentPrivilege	2700	wmic.exe
Token: SeRemoteShutdownPrivilege	2700	wmic.exe
Token: SeUndockPrivilege	2700	wmic.exe
Token: SeManageVolumePrivilege	2700	wmic.exe
Token: 33	2700	wmic.exe
Token: 34	2700	wmic.exe
Token: 35	2700	wmic.exe
Token: SeIncreaseQuotaPrivilege	2700	wmic.exe
Token: SeSecurityPrivilege	2700	wmic.exe
Token: SeTakeOwnershipPrivilege	2700	wmic.exe
Token: SeLoadDriverPrivilege	2700	wmic.exe
Token: SeSystemProfilePrivilege	2700	wmic.exe
Token: SeSystemtimePrivilege	2700	wmic.exe
Token: SeProfSingleProcessPrivilege	2700	wmic.exe
Token: SeIncBasePriorityPrivilege	2700	wmic.exe
Token: SeCreatePagefilePrivilege	2700	wmic.exe
Token: SeBackupPrivilege	2700	wmic.exe
Token: SeRestorePrivilege	2700	wmic.exe
Token: SeShutdownPrivilege	2700	wmic.exe
Token: SeDebugPrivilege	2700	wmic.exe
Token: SeSystemEnvironmentPrivilege	2700	wmic.exe
Token: SeRemoteShutdownPrivilege	2700	wmic.exe
Token: SeUndockPrivilege	2700	wmic.exe
Token: SeManageVolumePrivilege	2700	wmic.exe
Token: 33	2700	wmic.exe
Token: 34	2700	wmic.exe
Token: 35	2700	wmic.exe
Token: SeDebugPrivilege	2688	powershell.exe
Token: SeDebugPrivilege	3048	powershell.exe
Token: SeDebugPrivilege	2832	powershell.exe
Token: SeDebugPrivilege	2004	powershell.exe
Token: SeIncreaseQuotaPrivilege	1104	wmic.exe
Token: SeSecurityPrivilege	1104	wmic.exe
Token: SeTakeOwnershipPrivilege	1104	wmic.exe
Token: SeLoadDriverPrivilege	1104	wmic.exe
Token: SeSystemProfilePrivilege	1104	wmic.exe
Token: SeSystemtimePrivilege	1104	wmic.exe
Token: SeProfSingleProcessPrivilege	1104	wmic.exe
Token: SeIncBasePriorityPrivilege	1104	wmic.exe
Token: SeCreatePagefilePrivilege	1104	wmic.exe
Token: SeBackupPrivilege	1104	wmic.exe
Token: SeRestorePrivilege	1104	wmic.exe
Token: SeShutdownPrivilege	1104	wmic.exe
Token: SeDebugPrivilege	1104	wmic.exe
Token: SeSystemEnvironmentPrivilege	1104	wmic.exe
Token: SeRemoteShutdownPrivilege	1104	wmic.exe
Token: SeUndockPrivilege	1104	wmic.exe
Token: SeManageVolumePrivilege	1104	wmic.exe
Token: 33	1104	wmic.exe
Token: 34	1104	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2236 wrote to memory of 2700	2236	Eval.gg.exe	30
PID 2236 wrote to memory of 2700	2236	Eval.gg.exe	30
PID 2236 wrote to memory of 2700	2236	Eval.gg.exe	30
PID 2236 wrote to memory of 2764	2236	Eval.gg.exe	33
PID 2236 wrote to memory of 2764	2236	Eval.gg.exe	33
PID 2236 wrote to memory of 2764	2236	Eval.gg.exe	33
PID 2236 wrote to memory of 2688	2236	Eval.gg.exe	35
PID 2236 wrote to memory of 2688	2236	Eval.gg.exe	35
PID 2236 wrote to memory of 2688	2236	Eval.gg.exe	35
PID 2236 wrote to memory of 3048	2236	Eval.gg.exe	37
PID 2236 wrote to memory of 3048	2236	Eval.gg.exe	37
PID 2236 wrote to memory of 3048	2236	Eval.gg.exe	37
PID 2236 wrote to memory of 2832	2236	Eval.gg.exe	39
PID 2236 wrote to memory of 2832	2236	Eval.gg.exe	39
PID 2236 wrote to memory of 2832	2236	Eval.gg.exe	39
PID 2236 wrote to memory of 2004	2236	Eval.gg.exe	41
PID 2236 wrote to memory of 2004	2236	Eval.gg.exe	41
PID 2236 wrote to memory of 2004	2236	Eval.gg.exe	41
PID 2236 wrote to memory of 1104	2236	Eval.gg.exe	43
PID 2236 wrote to memory of 1104	2236	Eval.gg.exe	43
PID 2236 wrote to memory of 1104	2236	Eval.gg.exe	43
PID 2236 wrote to memory of 2384	2236	Eval.gg.exe	45
PID 2236 wrote to memory of 2384	2236	Eval.gg.exe	45
PID 2236 wrote to memory of 2384	2236	Eval.gg.exe	45
PID 2236 wrote to memory of 1592	2236	Eval.gg.exe	47
PID 2236 wrote to memory of 1592	2236	Eval.gg.exe	47
PID 2236 wrote to memory of 1592	2236	Eval.gg.exe	47
PID 2236 wrote to memory of 2116	2236	Eval.gg.exe	49
PID 2236 wrote to memory of 2116	2236	Eval.gg.exe	49
PID 2236 wrote to memory of 2116	2236	Eval.gg.exe	49
PID 2236 wrote to memory of 1276	2236	Eval.gg.exe	51
PID 2236 wrote to memory of 1276	2236	Eval.gg.exe	51
PID 2236 wrote to memory of 1276	2236	Eval.gg.exe	51
PID 2236 wrote to memory of 444	2236	Eval.gg.exe	53
PID 2236 wrote to memory of 444	2236	Eval.gg.exe	53
PID 2236 wrote to memory of 444	2236	Eval.gg.exe	53
PID 444 wrote to memory of 1264	444	cmd.exe	55
PID 444 wrote to memory of 1264	444	cmd.exe	55
PID 444 wrote to memory of 1264	444	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2764	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Eval.gg.exe
"C:\Users\Admin\AppData\Local\Temp\Eval.gg.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2236
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2700
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Eval.gg.exe"
  2⤵
  - Views/modifies file attributes
  PID:2764
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Eval.gg.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2688
- 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:3048
- 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:2832
- 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:2004
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1104
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2384
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1592
- 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:2116
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1276
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Eval.gg.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:444
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1264

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
1⤵
PID:1500

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\Downloads\EditBackup.vbs"
1⤵
PID:2076

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

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Downloads

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

Filesize
7KB

MD5
2023db5ffc1ce0f9f13ee979ba325b3b

SHA1
3be93440e8a4cbe2fee717f296e9b6a20395ac61

SHA256
7bee7908d80608ad715b50a67df000c32d2905bab58b8d3666bdd7a2ab7f9752

SHA512
789b08cefa4ad3096a339f75bcbb5add5e14ca556772059b9e519e1b627ba233eb185c43a170cc75fb890ddc25f0a5f64a9bd2355b44f1728be67ce2181def0b

Download Submit
memory/2116-44-0x0000000001D20000-0x0000000001D28000-memory.dmp

Filesize
32KB

Download
memory/2236-0-0x000007FEF5693000-0x000007FEF5694000-memory.dmp

Filesize
4KB

Download
memory/2236-1-0x0000000000A40000-0x0000000000A80000-memory.dmp

Filesize
256KB

Download
memory/2236-2-0x000007FEF5690000-0x000007FEF607C000-memory.dmp

Filesize
9.9MB

Download
memory/2236-48-0x000007FEF5690000-0x000007FEF607C000-memory.dmp

Filesize
9.9MB

Download
memory/2688-7-0x000000001B610000-0x000000001B8F2000-memory.dmp

Filesize
2.9MB

Download
memory/2688-8-0x00000000022C0000-0x00000000022C8000-memory.dmp

Filesize
32KB

Download
memory/3048-14-0x000000001B780000-0x000000001BA62000-memory.dmp

Filesize
2.9MB

Download
memory/3048-15-0x0000000000560000-0x0000000000568000-memory.dmp

Filesize
32KB

Download