umbral | 7539b30456f24ea68843face96f39398b2ae7fcd99d7569c93b484f65e1e1f90

Analysis

max time kernel
94s
max time network
98s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-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
behavioral2/memory/3400-0-0x000001C1BDF60000-0x000001C1BDFA0000-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
3672	powershell.exe
3016	powershell.exe
4644	powershell.exe
2792	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	Solara.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
21	discord.com
22	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
3	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
1812	cmd.exe
3592	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
436	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3592	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
3400	Solara.exe
3672	powershell.exe
3672	powershell.exe
3016	powershell.exe
3016	powershell.exe
4644	powershell.exe
4644	powershell.exe
1512	powershell.exe
1512	powershell.exe
2792	powershell.exe
2792	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3400	Solara.exe
Token: SeIncreaseQuotaPrivilege	3980	wmic.exe
Token: SeSecurityPrivilege	3980	wmic.exe
Token: SeTakeOwnershipPrivilege	3980	wmic.exe
Token: SeLoadDriverPrivilege	3980	wmic.exe
Token: SeSystemProfilePrivilege	3980	wmic.exe
Token: SeSystemtimePrivilege	3980	wmic.exe
Token: SeProfSingleProcessPrivilege	3980	wmic.exe
Token: SeIncBasePriorityPrivilege	3980	wmic.exe
Token: SeCreatePagefilePrivilege	3980	wmic.exe
Token: SeBackupPrivilege	3980	wmic.exe
Token: SeRestorePrivilege	3980	wmic.exe
Token: SeShutdownPrivilege	3980	wmic.exe
Token: SeDebugPrivilege	3980	wmic.exe
Token: SeSystemEnvironmentPrivilege	3980	wmic.exe
Token: SeRemoteShutdownPrivilege	3980	wmic.exe
Token: SeUndockPrivilege	3980	wmic.exe
Token: SeManageVolumePrivilege	3980	wmic.exe
Token: 33	3980	wmic.exe
Token: 34	3980	wmic.exe
Token: 35	3980	wmic.exe
Token: 36	3980	wmic.exe
Token: SeIncreaseQuotaPrivilege	3980	wmic.exe
Token: SeSecurityPrivilege	3980	wmic.exe
Token: SeTakeOwnershipPrivilege	3980	wmic.exe
Token: SeLoadDriverPrivilege	3980	wmic.exe
Token: SeSystemProfilePrivilege	3980	wmic.exe
Token: SeSystemtimePrivilege	3980	wmic.exe
Token: SeProfSingleProcessPrivilege	3980	wmic.exe
Token: SeIncBasePriorityPrivilege	3980	wmic.exe
Token: SeCreatePagefilePrivilege	3980	wmic.exe
Token: SeBackupPrivilege	3980	wmic.exe
Token: SeRestorePrivilege	3980	wmic.exe
Token: SeShutdownPrivilege	3980	wmic.exe
Token: SeDebugPrivilege	3980	wmic.exe
Token: SeSystemEnvironmentPrivilege	3980	wmic.exe
Token: SeRemoteShutdownPrivilege	3980	wmic.exe
Token: SeUndockPrivilege	3980	wmic.exe
Token: SeManageVolumePrivilege	3980	wmic.exe
Token: 33	3980	wmic.exe
Token: 34	3980	wmic.exe
Token: 35	3980	wmic.exe
Token: 36	3980	wmic.exe
Token: SeDebugPrivilege	3672	powershell.exe
Token: SeDebugPrivilege	3016	powershell.exe
Token: SeDebugPrivilege	4644	powershell.exe
Token: SeDebugPrivilege	1512	powershell.exe
Token: SeIncreaseQuotaPrivilege	1008	wmic.exe
Token: SeSecurityPrivilege	1008	wmic.exe
Token: SeTakeOwnershipPrivilege	1008	wmic.exe
Token: SeLoadDriverPrivilege	1008	wmic.exe
Token: SeSystemProfilePrivilege	1008	wmic.exe
Token: SeSystemtimePrivilege	1008	wmic.exe
Token: SeProfSingleProcessPrivilege	1008	wmic.exe
Token: SeIncBasePriorityPrivilege	1008	wmic.exe
Token: SeCreatePagefilePrivilege	1008	wmic.exe
Token: SeBackupPrivilege	1008	wmic.exe
Token: SeRestorePrivilege	1008	wmic.exe
Token: SeShutdownPrivilege	1008	wmic.exe
Token: SeDebugPrivilege	1008	wmic.exe
Token: SeSystemEnvironmentPrivilege	1008	wmic.exe
Token: SeRemoteShutdownPrivilege	1008	wmic.exe
Token: SeUndockPrivilege	1008	wmic.exe
Token: SeManageVolumePrivilege	1008	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3400 wrote to memory of 3980	3400	Solara.exe	84
PID 3400 wrote to memory of 3980	3400	Solara.exe	84
PID 3400 wrote to memory of 2528	3400	Solara.exe	89
PID 3400 wrote to memory of 2528	3400	Solara.exe	89
PID 3400 wrote to memory of 3672	3400	Solara.exe	91
PID 3400 wrote to memory of 3672	3400	Solara.exe	91
PID 3400 wrote to memory of 3016	3400	Solara.exe	93
PID 3400 wrote to memory of 3016	3400	Solara.exe	93
PID 3400 wrote to memory of 4644	3400	Solara.exe	95
PID 3400 wrote to memory of 4644	3400	Solara.exe	95
PID 3400 wrote to memory of 1512	3400	Solara.exe	97
PID 3400 wrote to memory of 1512	3400	Solara.exe	97
PID 3400 wrote to memory of 1008	3400	Solara.exe	99
PID 3400 wrote to memory of 1008	3400	Solara.exe	99
PID 3400 wrote to memory of 4756	3400	Solara.exe	101
PID 3400 wrote to memory of 4756	3400	Solara.exe	101
PID 3400 wrote to memory of 2864	3400	Solara.exe	103
PID 3400 wrote to memory of 2864	3400	Solara.exe	103
PID 3400 wrote to memory of 2792	3400	Solara.exe	105
PID 3400 wrote to memory of 2792	3400	Solara.exe	105
PID 3400 wrote to memory of 436	3400	Solara.exe	107
PID 3400 wrote to memory of 436	3400	Solara.exe	107
PID 3400 wrote to memory of 1812	3400	Solara.exe	109
PID 3400 wrote to memory of 1812	3400	Solara.exe	109
PID 1812 wrote to memory of 3592	1812	cmd.exe	111
PID 1812 wrote to memory of 3592	1812	cmd.exe	111

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2528	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:3400
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3980
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Solara.exe"
  2⤵
  - Views/modifies file attributes
  PID:2528
- 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:3672
- 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:3016
- 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:4644
- 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:1512
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1008
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:4756
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2864
- 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:2792
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:436
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Solara.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1812
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:3592

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\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
944B

MD5
2e907f77659a6601fcc408274894da2e

SHA1
9f5b72abef1cd7145bf37547cdb1b9254b4efe9d

SHA256
385da35673330e21ac02545220552fe301fe54dedefbdafc097ac4342a295233

SHA512
34fa0fff24f6550f55f828541aaefe5d75c86f8f0842d54b50065e9746f9662bb7209c74c9a9571540b9855bb3851f01db613190024e89b198d485bb5dc07721

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

Filesize
948B

MD5
47aec0ae6e0dfab5f91c35cd65d2c56a

SHA1
0bbe13618bdc0c402539cdfca81471aa501f5cad

SHA256
8f31385012b247db2cc50ecb164208fbbf5f8cdf7bfc951e8c2c8ad5fb04cf0b

SHA512
c4b7184a85c1d594012ba86390e651439d6cae63c76b94432faaaea410e4ef9bc62d88e68adf8f3abbe36e18ef9e4dc46c3e31a0d72089f98a22f04c8b4a8f12

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\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
107102102e02e48f37f5318c7e113c43

SHA1
7fb10fc65c85fb4c050309f0872bc9389dcccc0d

SHA256
3c3f49948c1e832c86b959c32bc288ddedb500534b74df082f8967fc7f9976f7

SHA512
b108a47d7c3dd154cad44362b6cd557b7064096383d100e6cd64bfb19c4e2ad878ed4ee800776322ad3cc4bb721fb675b0ecab8f5661024188fa3aa19561841b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_bhl5fnx3.ot0.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3400-68-0x000001C1BE460000-0x000001C1BE46A000-memory.dmp

Filesize
40KB

Download
memory/3400-35-0x000001C1D8780000-0x000001C1D879E000-memory.dmp

Filesize
120KB

Download
memory/3400-87-0x00007FF850B80000-0x00007FF851641000-memory.dmp

Filesize
10.8MB

Download
memory/3400-69-0x000001C1BE490000-0x000001C1BE4A2000-memory.dmp

Filesize
72KB

Download
memory/3400-2-0x00007FF850B80000-0x00007FF851641000-memory.dmp

Filesize
10.8MB

Download
memory/3400-33-0x000001C1D8700000-0x000001C1D8776000-memory.dmp

Filesize
472KB

Download
memory/3400-34-0x000001C1D8580000-0x000001C1D85D0000-memory.dmp

Filesize
320KB

Download
memory/3400-1-0x00007FF850B83000-0x00007FF850B85000-memory.dmp

Filesize
8KB

Download
memory/3400-0-0x000001C1BDF60000-0x000001C1BDFA0000-memory.dmp

Filesize
256KB

Download
memory/3672-15-0x00007FF850B80000-0x00007FF851641000-memory.dmp

Filesize
10.8MB

Download
memory/3672-13-0x00000254D59C0000-0x00000254D59E2000-memory.dmp

Filesize
136KB

Download
memory/3672-3-0x00007FF850B80000-0x00007FF851641000-memory.dmp

Filesize
10.8MB

Download
memory/3672-14-0x00007FF850B80000-0x00007FF851641000-memory.dmp

Filesize
10.8MB

Download
memory/3672-18-0x00007FF850B80000-0x00007FF851641000-memory.dmp

Filesize
10.8MB

Download