umbral | 3a01df550a7bbde4061d91acf6641acad0821c5005bb10c37a659493a1f69f6d

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
01-08-2024 01:37

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General

Target

Exoticgen.exe
Size

235KB
MD5

099c16c602df2d705c4f68add9f4dcd7
SHA1

a35dfa3f01bef023bd4170cf1c71099f259bc65d
SHA256

3a01df550a7bbde4061d91acf6641acad0821c5005bb10c37a659493a1f69f6d
SHA512

9055442927d4815a9d584b6881806aa2dded35cc679abf023cc9129efbd499457cc9e184f0f675431134651934984f8fda5a597ee74e6074a44b6887c56f777f
SSDEEP

6144:jloZM+rIkd8g+EtXHkv/iD41+Ic5nsAvvOXZkQlu+Sb8e1m2i:BoZtL+EP81+Ic5nsAvvOXZkQlupw

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2376-1-0x0000000000B40000-0x0000000000B80000-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
2980	powershell.exe
2704	powershell.exe
1864	powershell.exe
2780	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Deletes itself 1 IoCs

pid	Process
1452	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
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

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
1452	cmd.exe
2140	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2668	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2140	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2376	Exoticgen.exe
2780	powershell.exe
2980	powershell.exe
2704	powershell.exe
784	powershell.exe
1864	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2376	Exoticgen.exe
Token: SeIncreaseQuotaPrivilege	2316	wmic.exe
Token: SeSecurityPrivilege	2316	wmic.exe
Token: SeTakeOwnershipPrivilege	2316	wmic.exe
Token: SeLoadDriverPrivilege	2316	wmic.exe
Token: SeSystemProfilePrivilege	2316	wmic.exe
Token: SeSystemtimePrivilege	2316	wmic.exe
Token: SeProfSingleProcessPrivilege	2316	wmic.exe
Token: SeIncBasePriorityPrivilege	2316	wmic.exe
Token: SeCreatePagefilePrivilege	2316	wmic.exe
Token: SeBackupPrivilege	2316	wmic.exe
Token: SeRestorePrivilege	2316	wmic.exe
Token: SeShutdownPrivilege	2316	wmic.exe
Token: SeDebugPrivilege	2316	wmic.exe
Token: SeSystemEnvironmentPrivilege	2316	wmic.exe
Token: SeRemoteShutdownPrivilege	2316	wmic.exe
Token: SeUndockPrivilege	2316	wmic.exe
Token: SeManageVolumePrivilege	2316	wmic.exe
Token: 33	2316	wmic.exe
Token: 34	2316	wmic.exe
Token: 35	2316	wmic.exe
Token: SeIncreaseQuotaPrivilege	2316	wmic.exe
Token: SeSecurityPrivilege	2316	wmic.exe
Token: SeTakeOwnershipPrivilege	2316	wmic.exe
Token: SeLoadDriverPrivilege	2316	wmic.exe
Token: SeSystemProfilePrivilege	2316	wmic.exe
Token: SeSystemtimePrivilege	2316	wmic.exe
Token: SeProfSingleProcessPrivilege	2316	wmic.exe
Token: SeIncBasePriorityPrivilege	2316	wmic.exe
Token: SeCreatePagefilePrivilege	2316	wmic.exe
Token: SeBackupPrivilege	2316	wmic.exe
Token: SeRestorePrivilege	2316	wmic.exe
Token: SeShutdownPrivilege	2316	wmic.exe
Token: SeDebugPrivilege	2316	wmic.exe
Token: SeSystemEnvironmentPrivilege	2316	wmic.exe
Token: SeRemoteShutdownPrivilege	2316	wmic.exe
Token: SeUndockPrivilege	2316	wmic.exe
Token: SeManageVolumePrivilege	2316	wmic.exe
Token: 33	2316	wmic.exe
Token: 34	2316	wmic.exe
Token: 35	2316	wmic.exe
Token: SeDebugPrivilege	2780	powershell.exe
Token: SeDebugPrivilege	2980	powershell.exe
Token: SeDebugPrivilege	2704	powershell.exe
Token: SeDebugPrivilege	784	powershell.exe
Token: SeIncreaseQuotaPrivilege	2988	wmic.exe
Token: SeSecurityPrivilege	2988	wmic.exe
Token: SeTakeOwnershipPrivilege	2988	wmic.exe
Token: SeLoadDriverPrivilege	2988	wmic.exe
Token: SeSystemProfilePrivilege	2988	wmic.exe
Token: SeSystemtimePrivilege	2988	wmic.exe
Token: SeProfSingleProcessPrivilege	2988	wmic.exe
Token: SeIncBasePriorityPrivilege	2988	wmic.exe
Token: SeCreatePagefilePrivilege	2988	wmic.exe
Token: SeBackupPrivilege	2988	wmic.exe
Token: SeRestorePrivilege	2988	wmic.exe
Token: SeShutdownPrivilege	2988	wmic.exe
Token: SeDebugPrivilege	2988	wmic.exe
Token: SeSystemEnvironmentPrivilege	2988	wmic.exe
Token: SeRemoteShutdownPrivilege	2988	wmic.exe
Token: SeUndockPrivilege	2988	wmic.exe
Token: SeManageVolumePrivilege	2988	wmic.exe
Token: 33	2988	wmic.exe
Token: 34	2988	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2376 wrote to memory of 2316	2376	Exoticgen.exe	30
PID 2376 wrote to memory of 2316	2376	Exoticgen.exe	30
PID 2376 wrote to memory of 2316	2376	Exoticgen.exe	30
PID 2376 wrote to memory of 2848	2376	Exoticgen.exe	33
PID 2376 wrote to memory of 2848	2376	Exoticgen.exe	33
PID 2376 wrote to memory of 2848	2376	Exoticgen.exe	33
PID 2376 wrote to memory of 2780	2376	Exoticgen.exe	35
PID 2376 wrote to memory of 2780	2376	Exoticgen.exe	35
PID 2376 wrote to memory of 2780	2376	Exoticgen.exe	35
PID 2376 wrote to memory of 2980	2376	Exoticgen.exe	37
PID 2376 wrote to memory of 2980	2376	Exoticgen.exe	37
PID 2376 wrote to memory of 2980	2376	Exoticgen.exe	37
PID 2376 wrote to memory of 2704	2376	Exoticgen.exe	39
PID 2376 wrote to memory of 2704	2376	Exoticgen.exe	39
PID 2376 wrote to memory of 2704	2376	Exoticgen.exe	39
PID 2376 wrote to memory of 784	2376	Exoticgen.exe	41
PID 2376 wrote to memory of 784	2376	Exoticgen.exe	41
PID 2376 wrote to memory of 784	2376	Exoticgen.exe	41
PID 2376 wrote to memory of 2988	2376	Exoticgen.exe	43
PID 2376 wrote to memory of 2988	2376	Exoticgen.exe	43
PID 2376 wrote to memory of 2988	2376	Exoticgen.exe	43
PID 2376 wrote to memory of 1592	2376	Exoticgen.exe	45
PID 2376 wrote to memory of 1592	2376	Exoticgen.exe	45
PID 2376 wrote to memory of 1592	2376	Exoticgen.exe	45
PID 2376 wrote to memory of 2356	2376	Exoticgen.exe	47
PID 2376 wrote to memory of 2356	2376	Exoticgen.exe	47
PID 2376 wrote to memory of 2356	2376	Exoticgen.exe	47
PID 2376 wrote to memory of 1864	2376	Exoticgen.exe	49
PID 2376 wrote to memory of 1864	2376	Exoticgen.exe	49
PID 2376 wrote to memory of 1864	2376	Exoticgen.exe	49
PID 2376 wrote to memory of 2668	2376	Exoticgen.exe	51
PID 2376 wrote to memory of 2668	2376	Exoticgen.exe	51
PID 2376 wrote to memory of 2668	2376	Exoticgen.exe	51
PID 2376 wrote to memory of 1452	2376	Exoticgen.exe	53
PID 2376 wrote to memory of 1452	2376	Exoticgen.exe	53
PID 2376 wrote to memory of 1452	2376	Exoticgen.exe	53
PID 1452 wrote to memory of 2140	1452	cmd.exe	55
PID 1452 wrote to memory of 2140	1452	cmd.exe	55
PID 1452 wrote to memory of 2140	1452	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2848	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Exoticgen.exe
"C:\Users\Admin\AppData\Local\Temp\Exoticgen.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2376
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2316
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Exoticgen.exe"
  2⤵
  - Views/modifies file attributes
  PID:2848
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Exoticgen.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2780
- 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:2980
- 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:2704
- 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:784
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2988
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1592
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2356
- 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:1864
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2668
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Exoticgen.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1452
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2140

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
321285bbc2c39b8f41a6c53d55759a6c

SHA1
b19a06a0a90b26c508bda8740e06b544a0a65df9

SHA256
3528886a346a50444ad500709c8fa5215166d2d283c8dba6ecd7b1cb37e71877

SHA512
48e110d3468f6cad5a7701cba136341c241e538ff692ea44ee729ea105fef1204d41585b6f041616eac99ce674efccc2f185fe15c10059fcb21cc521b187de6a

Download Submit
memory/1864-43-0x0000000002440000-0x0000000002448000-memory.dmp

Filesize
32KB

Download
memory/2376-0-0x000007FEF6663000-0x000007FEF6664000-memory.dmp

Filesize
4KB

Download
memory/2376-1-0x0000000000B40000-0x0000000000B80000-memory.dmp

Filesize
256KB

Download
memory/2376-2-0x000007FEF6660000-0x000007FEF704C000-memory.dmp

Filesize
9.9MB

Download
memory/2376-47-0x000007FEF6660000-0x000007FEF704C000-memory.dmp

Filesize
9.9MB

Download
memory/2780-7-0x000000001B8B0000-0x000000001BB92000-memory.dmp

Filesize
2.9MB

Download
memory/2780-8-0x0000000001D00000-0x0000000001D08000-memory.dmp

Filesize
32KB

Download
memory/2980-14-0x000000001B5C0000-0x000000001B8A2000-memory.dmp

Filesize
2.9MB

Download
memory/2980-15-0x0000000002340000-0x0000000002348000-memory.dmp

Filesize
32KB

Download