umbral | 7539b30456f24ea68843face96f39398b2ae7fcd99d7569c93b484f65e1e1f90

Analysis

max time kernel
16s
max time network
17s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
04-08-2024 07:32

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General

Target

Solara.exe
Size

231KB
MD5

225a99bc730346acf6c25ef6252b2ccf
SHA1

6d234f32fe2c56eb9eec0902496e0d79ac8e6561
SHA256

7539b30456f24ea68843face96f39398b2ae7fcd99d7569c93b484f65e1e1f90
SHA512

847669dee9ca4d4183f416bed880bff2cdfe3935e9534823de5d35a6a05484e932981220ae1e9f94a3b4ec731433a3cbadb1946106bdd73e43ce41d0ad6f54a9
SSDEEP

6144:xloZM+rIkd8g+EtXHkv/iD4Qg1pMKInDAwZMK7bC42b8e1mmei:DoZtL+EP8B1pMKInDAwZMK7bC/5

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/1752-1-0x0000000000330000-0x0000000000370000-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
2556	powershell.exe
1056	powershell.exe
2684	powershell.exe
704	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Deletes itself 1 IoCs

pid	Process
2856	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
2856	cmd.exe
1960	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1408	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1960	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1752	Solara.exe
704	powershell.exe
2684	powershell.exe
2556	powershell.exe
2524	powershell.exe
1056	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1752	Solara.exe
Token: SeIncreaseQuotaPrivilege	1236	wmic.exe
Token: SeSecurityPrivilege	1236	wmic.exe
Token: SeTakeOwnershipPrivilege	1236	wmic.exe
Token: SeLoadDriverPrivilege	1236	wmic.exe
Token: SeSystemProfilePrivilege	1236	wmic.exe
Token: SeSystemtimePrivilege	1236	wmic.exe
Token: SeProfSingleProcessPrivilege	1236	wmic.exe
Token: SeIncBasePriorityPrivilege	1236	wmic.exe
Token: SeCreatePagefilePrivilege	1236	wmic.exe
Token: SeBackupPrivilege	1236	wmic.exe
Token: SeRestorePrivilege	1236	wmic.exe
Token: SeShutdownPrivilege	1236	wmic.exe
Token: SeDebugPrivilege	1236	wmic.exe
Token: SeSystemEnvironmentPrivilege	1236	wmic.exe
Token: SeRemoteShutdownPrivilege	1236	wmic.exe
Token: SeUndockPrivilege	1236	wmic.exe
Token: SeManageVolumePrivilege	1236	wmic.exe
Token: 33	1236	wmic.exe
Token: 34	1236	wmic.exe
Token: 35	1236	wmic.exe
Token: SeIncreaseQuotaPrivilege	1236	wmic.exe
Token: SeSecurityPrivilege	1236	wmic.exe
Token: SeTakeOwnershipPrivilege	1236	wmic.exe
Token: SeLoadDriverPrivilege	1236	wmic.exe
Token: SeSystemProfilePrivilege	1236	wmic.exe
Token: SeSystemtimePrivilege	1236	wmic.exe
Token: SeProfSingleProcessPrivilege	1236	wmic.exe
Token: SeIncBasePriorityPrivilege	1236	wmic.exe
Token: SeCreatePagefilePrivilege	1236	wmic.exe
Token: SeBackupPrivilege	1236	wmic.exe
Token: SeRestorePrivilege	1236	wmic.exe
Token: SeShutdownPrivilege	1236	wmic.exe
Token: SeDebugPrivilege	1236	wmic.exe
Token: SeSystemEnvironmentPrivilege	1236	wmic.exe
Token: SeRemoteShutdownPrivilege	1236	wmic.exe
Token: SeUndockPrivilege	1236	wmic.exe
Token: SeManageVolumePrivilege	1236	wmic.exe
Token: 33	1236	wmic.exe
Token: 34	1236	wmic.exe
Token: 35	1236	wmic.exe
Token: SeDebugPrivilege	704	powershell.exe
Token: SeDebugPrivilege	2684	powershell.exe
Token: SeDebugPrivilege	2556	powershell.exe
Token: SeDebugPrivilege	2524	powershell.exe
Token: SeIncreaseQuotaPrivilege	776	wmic.exe
Token: SeSecurityPrivilege	776	wmic.exe
Token: SeTakeOwnershipPrivilege	776	wmic.exe
Token: SeLoadDriverPrivilege	776	wmic.exe
Token: SeSystemProfilePrivilege	776	wmic.exe
Token: SeSystemtimePrivilege	776	wmic.exe
Token: SeProfSingleProcessPrivilege	776	wmic.exe
Token: SeIncBasePriorityPrivilege	776	wmic.exe
Token: SeCreatePagefilePrivilege	776	wmic.exe
Token: SeBackupPrivilege	776	wmic.exe
Token: SeRestorePrivilege	776	wmic.exe
Token: SeShutdownPrivilege	776	wmic.exe
Token: SeDebugPrivilege	776	wmic.exe
Token: SeSystemEnvironmentPrivilege	776	wmic.exe
Token: SeRemoteShutdownPrivilege	776	wmic.exe
Token: SeUndockPrivilege	776	wmic.exe
Token: SeManageVolumePrivilege	776	wmic.exe
Token: 33	776	wmic.exe
Token: 34	776	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 1752 wrote to memory of 1236	1752	Solara.exe	29
PID 1752 wrote to memory of 1236	1752	Solara.exe	29
PID 1752 wrote to memory of 1236	1752	Solara.exe	29
PID 1752 wrote to memory of 980	1752	Solara.exe	32
PID 1752 wrote to memory of 980	1752	Solara.exe	32
PID 1752 wrote to memory of 980	1752	Solara.exe	32
PID 1752 wrote to memory of 704	1752	Solara.exe	34
PID 1752 wrote to memory of 704	1752	Solara.exe	34
PID 1752 wrote to memory of 704	1752	Solara.exe	34
PID 1752 wrote to memory of 2684	1752	Solara.exe	36
PID 1752 wrote to memory of 2684	1752	Solara.exe	36
PID 1752 wrote to memory of 2684	1752	Solara.exe	36
PID 1752 wrote to memory of 2556	1752	Solara.exe	38
PID 1752 wrote to memory of 2556	1752	Solara.exe	38
PID 1752 wrote to memory of 2556	1752	Solara.exe	38
PID 1752 wrote to memory of 2524	1752	Solara.exe	40
PID 1752 wrote to memory of 2524	1752	Solara.exe	40
PID 1752 wrote to memory of 2524	1752	Solara.exe	40
PID 1752 wrote to memory of 776	1752	Solara.exe	42
PID 1752 wrote to memory of 776	1752	Solara.exe	42
PID 1752 wrote to memory of 776	1752	Solara.exe	42
PID 1752 wrote to memory of 2832	1752	Solara.exe	44
PID 1752 wrote to memory of 2832	1752	Solara.exe	44
PID 1752 wrote to memory of 2832	1752	Solara.exe	44
PID 1752 wrote to memory of 2600	1752	Solara.exe	46
PID 1752 wrote to memory of 2600	1752	Solara.exe	46
PID 1752 wrote to memory of 2600	1752	Solara.exe	46
PID 1752 wrote to memory of 1056	1752	Solara.exe	48
PID 1752 wrote to memory of 1056	1752	Solara.exe	48
PID 1752 wrote to memory of 1056	1752	Solara.exe	48
PID 1752 wrote to memory of 1408	1752	Solara.exe	50
PID 1752 wrote to memory of 1408	1752	Solara.exe	50
PID 1752 wrote to memory of 1408	1752	Solara.exe	50
PID 1752 wrote to memory of 2856	1752	Solara.exe	52
PID 1752 wrote to memory of 2856	1752	Solara.exe	52
PID 1752 wrote to memory of 2856	1752	Solara.exe	52
PID 2856 wrote to memory of 1960	2856	cmd.exe	54
PID 2856 wrote to memory of 1960	2856	cmd.exe	54
PID 2856 wrote to memory of 1960	2856	cmd.exe	54

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
980	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Solara.exe
"C:\Users\Admin\AppData\Local\Temp\Solara.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1752
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1236
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Solara.exe"
  2⤵
  - Views/modifies file attributes
  PID:980
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Solara.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:704
- 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:2684
- 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:2556
- 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:2524
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:776
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2832
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2600
- 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:1056
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1408
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Solara.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2856
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1960

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
04571eec89b1dbfa0b9f685f28bbebc1

SHA1
10add784a6008a18585094ddd0369118225d2819

SHA256
6b45091b61f39912895100eb43c6f0a33c0f5be7caf626e408606126f1b6c8c1

SHA512
97781f30585c95275c0de31c9ee4b4a4302ee89b858916e8e0d0ace7bfc3235de8ae571983840c464231274262babce2097ed8e79c33105cc5a8b2f0eee27772

Download Submit
memory/704-7-0x000000001B730000-0x000000001BA12000-memory.dmp

Filesize
2.9MB

Download
memory/704-8-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/1056-44-0x0000000001E50000-0x0000000001E58000-memory.dmp

Filesize
32KB

Download
memory/1056-43-0x000000001B740000-0x000000001BA22000-memory.dmp

Filesize
2.9MB

Download
memory/1752-0-0x000007FEF5873000-0x000007FEF5874000-memory.dmp

Filesize
4KB

Download
memory/1752-1-0x0000000000330000-0x0000000000370000-memory.dmp

Filesize
256KB

Download
memory/1752-2-0x000007FEF5870000-0x000007FEF625C000-memory.dmp

Filesize
9.9MB

Download
memory/1752-48-0x000007FEF5870000-0x000007FEF625C000-memory.dmp

Filesize
9.9MB

Download
memory/2684-14-0x000000001B6E0000-0x000000001B9C2000-memory.dmp

Filesize
2.9MB

Download
memory/2684-15-0x0000000001E00000-0x0000000001E08000-memory.dmp

Filesize
32KB

Download