umbral | 2df439e8c9ee999f550f555e938904fcc435aa9836fbb6c962c41d8b99002c50

Analysis

max time kernel
211s
max time network
280s
platform
windows11-21h2_x64
resource
win11-20240426-en
resource tags

arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
submitted
20-05-2024 10:28

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General

Target

solara3.1.exe
Size

231KB
MD5

7340ffe16733c99a8f1904d4594951d6
SHA1

1522dc62d3f4658d50f48739eb9657f4b736be3d
SHA256

b5f99328387778a288470830b0e6aaaf401a55c23cd042e2a78041e10ea343b1
SHA512

9d8bc3b2476c0b9499762f9cff98b3df0ef9d478f976f74a30c534fd2d09b2e14883db6c5485b5df6a9e527b5945c12f326ecc1eb4fae54c1561a0159a086245
SSDEEP

6144:RloZM3fsXtioRkts/cnnK6cMlXrLwEKtFudr20VJgkTb8e1mCi:joZ1tlRk83MlXrLwEKtFudr20VJgek

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2252-0-0x0000027052EB0000-0x0000027052EF0000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
1968	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	solara3.1.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

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
1	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1212	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3124	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
2252	solara3.1.exe
1968	powershell.exe
1968	powershell.exe
5016	powershell.exe
5016	powershell.exe
4984	powershell.exe
4984	powershell.exe
1064	powershell.exe
1064	powershell.exe
3276	powershell.exe
3276	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2252	solara3.1.exe
Token: SeIncreaseQuotaPrivilege	3284	wmic.exe
Token: SeSecurityPrivilege	3284	wmic.exe
Token: SeTakeOwnershipPrivilege	3284	wmic.exe
Token: SeLoadDriverPrivilege	3284	wmic.exe
Token: SeSystemProfilePrivilege	3284	wmic.exe
Token: SeSystemtimePrivilege	3284	wmic.exe
Token: SeProfSingleProcessPrivilege	3284	wmic.exe
Token: SeIncBasePriorityPrivilege	3284	wmic.exe
Token: SeCreatePagefilePrivilege	3284	wmic.exe
Token: SeBackupPrivilege	3284	wmic.exe
Token: SeRestorePrivilege	3284	wmic.exe
Token: SeShutdownPrivilege	3284	wmic.exe
Token: SeDebugPrivilege	3284	wmic.exe
Token: SeSystemEnvironmentPrivilege	3284	wmic.exe
Token: SeRemoteShutdownPrivilege	3284	wmic.exe
Token: SeUndockPrivilege	3284	wmic.exe
Token: SeManageVolumePrivilege	3284	wmic.exe
Token: 33	3284	wmic.exe
Token: 34	3284	wmic.exe
Token: 35	3284	wmic.exe
Token: 36	3284	wmic.exe
Token: SeIncreaseQuotaPrivilege	3284	wmic.exe
Token: SeSecurityPrivilege	3284	wmic.exe
Token: SeTakeOwnershipPrivilege	3284	wmic.exe
Token: SeLoadDriverPrivilege	3284	wmic.exe
Token: SeSystemProfilePrivilege	3284	wmic.exe
Token: SeSystemtimePrivilege	3284	wmic.exe
Token: SeProfSingleProcessPrivilege	3284	wmic.exe
Token: SeIncBasePriorityPrivilege	3284	wmic.exe
Token: SeCreatePagefilePrivilege	3284	wmic.exe
Token: SeBackupPrivilege	3284	wmic.exe
Token: SeRestorePrivilege	3284	wmic.exe
Token: SeShutdownPrivilege	3284	wmic.exe
Token: SeDebugPrivilege	3284	wmic.exe
Token: SeSystemEnvironmentPrivilege	3284	wmic.exe
Token: SeRemoteShutdownPrivilege	3284	wmic.exe
Token: SeUndockPrivilege	3284	wmic.exe
Token: SeManageVolumePrivilege	3284	wmic.exe
Token: 33	3284	wmic.exe
Token: 34	3284	wmic.exe
Token: 35	3284	wmic.exe
Token: 36	3284	wmic.exe
Token: SeDebugPrivilege	1968	powershell.exe
Token: SeDebugPrivilege	5016	powershell.exe
Token: SeDebugPrivilege	4984	powershell.exe
Token: SeDebugPrivilege	1064	powershell.exe
Token: SeIncreaseQuotaPrivilege	1800	wmic.exe
Token: SeSecurityPrivilege	1800	wmic.exe
Token: SeTakeOwnershipPrivilege	1800	wmic.exe
Token: SeLoadDriverPrivilege	1800	wmic.exe
Token: SeSystemProfilePrivilege	1800	wmic.exe
Token: SeSystemtimePrivilege	1800	wmic.exe
Token: SeProfSingleProcessPrivilege	1800	wmic.exe
Token: SeIncBasePriorityPrivilege	1800	wmic.exe
Token: SeCreatePagefilePrivilege	1800	wmic.exe
Token: SeBackupPrivilege	1800	wmic.exe
Token: SeRestorePrivilege	1800	wmic.exe
Token: SeShutdownPrivilege	1800	wmic.exe
Token: SeDebugPrivilege	1800	wmic.exe
Token: SeSystemEnvironmentPrivilege	1800	wmic.exe
Token: SeRemoteShutdownPrivilege	1800	wmic.exe
Token: SeUndockPrivilege	1800	wmic.exe
Token: SeManageVolumePrivilege	1800	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2252 wrote to memory of 3284	2252	solara3.1.exe	81
PID 2252 wrote to memory of 3284	2252	solara3.1.exe	81
PID 2252 wrote to memory of 3680	2252	solara3.1.exe	85
PID 2252 wrote to memory of 3680	2252	solara3.1.exe	85
PID 2252 wrote to memory of 1968	2252	solara3.1.exe	87
PID 2252 wrote to memory of 1968	2252	solara3.1.exe	87
PID 2252 wrote to memory of 5016	2252	solara3.1.exe	89
PID 2252 wrote to memory of 5016	2252	solara3.1.exe	89
PID 2252 wrote to memory of 4984	2252	solara3.1.exe	91
PID 2252 wrote to memory of 4984	2252	solara3.1.exe	91
PID 2252 wrote to memory of 1064	2252	solara3.1.exe	93
PID 2252 wrote to memory of 1064	2252	solara3.1.exe	93
PID 2252 wrote to memory of 1800	2252	solara3.1.exe	95
PID 2252 wrote to memory of 1800	2252	solara3.1.exe	95
PID 2252 wrote to memory of 1628	2252	solara3.1.exe	97
PID 2252 wrote to memory of 1628	2252	solara3.1.exe	97
PID 2252 wrote to memory of 2016	2252	solara3.1.exe	99
PID 2252 wrote to memory of 2016	2252	solara3.1.exe	99
PID 2252 wrote to memory of 3276	2252	solara3.1.exe	101
PID 2252 wrote to memory of 3276	2252	solara3.1.exe	101
PID 2252 wrote to memory of 1212	2252	solara3.1.exe	103
PID 2252 wrote to memory of 1212	2252	solara3.1.exe	103
PID 2252 wrote to memory of 1476	2252	solara3.1.exe	105
PID 2252 wrote to memory of 1476	2252	solara3.1.exe	105
PID 1476 wrote to memory of 3124	1476	cmd.exe	107
PID 1476 wrote to memory of 3124	1476	cmd.exe	107

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3680	attrib.exe

C:\Users\Admin\AppData\Local\Temp\solara3.1.exe
"C:\Users\Admin\AppData\Local\Temp\solara3.1.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2252
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3284
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\solara3.1.exe"
  2⤵
  - Views/modifies file attributes
  PID:3680
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\solara3.1.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1968
- 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⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5016
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4984
- 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:1064
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1800
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1628
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2016
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:3276
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1212
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\solara3.1.exe" && pause
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1476
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:3124

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

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

Filesize
944B

MD5
1a9fa92a4f2e2ec9e244d43a6a4f8fb9

SHA1
9910190edfaccece1dfcc1d92e357772f5dae8f7

SHA256
0ee052d5333fd5fd86bc84856fec98e045f077a7ac8051651bf7c521b9706888

SHA512
5d2361476fa22200e6f83883efe7dcb8c3fe7dae8d56e04e28a36e9ae1270c327b6aa161d92b239593da7661289d002c574446ecfd6bd19928209aae25e3ef64

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

Filesize
948B

MD5
711b161528f4959c4b7463036c7324ec

SHA1
53b30cc796c0dfe0cd4c4406202a19139cb5407d

SHA256
7c077fb04d4911778ab648b657b43c9b464393d734dc7fa029ee0f085c6a5638

SHA512
565d0e3e229894de91ad37a16c261bf380e983ffda750f32e8ad361c0606c62043a0188f45d252fecabc6438bc9e7b2c424b101073162ba9633bacd03b42af9b

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

Filesize
1KB

MD5
7332074ae2b01262736b6fbd9e100dac

SHA1
22f992165065107cc9417fa4117240d84414a13c

SHA256
baea84fda6c1f13090b8cbd91c920848946f10ce155ef31a1df4cd453ee7e4aa

SHA512
4ae6f0e012c31ac1fc2ff4a8877ce2b4667c45b6e651de798318a39a2b6fd39a6f72dffa8b0b89b7a045a27d724d195656faa25a9fec79b22f37ddebb5d22da2

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

Filesize
1KB

MD5
1c0173315684736a04b0f5fe42957c12

SHA1
4f807eb7f4203987160503fc2144d4b3059d903c

SHA256
9200d881990608a02f4ea689d65c4c89893f08e209fed664442e18e6038283b8

SHA512
24f6ebc6cda60bfea224afc54d73fae5259f11d82b9ea47b3fb548214149036eef95279161eba28db0d74a4d397f7394c4c14adebe59dbd8da54ddf2dae242fc

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_pesgwz52.4vg.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1968-8-0x000001AF57B40000-0x000001AF57B62000-memory.dmp

Filesize
136KB

Download
memory/1968-13-0x00007FFCC6450000-0x00007FFCC6F12000-memory.dmp

Filesize
10.8MB

Download
memory/1968-14-0x00007FFCC6450000-0x00007FFCC6F12000-memory.dmp

Filesize
10.8MB

Download
memory/1968-17-0x00007FFCC6450000-0x00007FFCC6F12000-memory.dmp

Filesize
10.8MB

Download
memory/1968-12-0x00007FFCC6450000-0x00007FFCC6F12000-memory.dmp

Filesize
10.8MB

Download
memory/2252-31-0x000002706D710000-0x000002706D786000-memory.dmp

Filesize
472KB

Download
memory/2252-32-0x0000027054C10000-0x0000027054C60000-memory.dmp

Filesize
320KB

Download
memory/2252-33-0x000002706D7B0000-0x000002706D7CE000-memory.dmp

Filesize
120KB

Download
memory/2252-1-0x00007FFCC6453000-0x00007FFCC6455000-memory.dmp

Filesize
8KB

Download
memory/2252-0-0x0000027052EB0000-0x0000027052EF0000-memory.dmp

Filesize
256KB

Download
memory/2252-68-0x0000027054C60000-0x0000027054C72000-memory.dmp

Filesize
72KB

Download
memory/2252-67-0x0000027054BC0000-0x0000027054BCA000-memory.dmp

Filesize
40KB

Download
memory/2252-2-0x00007FFCC6450000-0x00007FFCC6F12000-memory.dmp

Filesize
10.8MB

Download
memory/2252-82-0x00007FFCC6450000-0x00007FFCC6F12000-memory.dmp

Filesize
10.8MB

Download
memory/2252-86-0x00007FFCC6450000-0x00007FFCC6F12000-memory.dmp

Filesize
10.8MB

Download