umbral | 7103785c72f15bc66849b927bb9b0030c2a8383a8f71cd4308b0b42055d8d467

Analysis

max time kernel
1460s
max time network
1488s
platform
windows11-21h2_x64
resource
win11-20240704-en
resource tags

arch:x64arch:x86image:win11-20240704-enlocale:en-usos:windows11-21h2-x64system
submitted
09-07-2024 10:35

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General

Target

Solara.exe
Size

253KB
MD5

9f3f506175ad4d9550bf1aea609694a7
SHA1

6cc35e30d5b40eb1b5d115feec12ec247a84193f
SHA256

7103785c72f15bc66849b927bb9b0030c2a8383a8f71cd4308b0b42055d8d467
SHA512

b4a691e3b679dac187f1219cff013d3e27a87d55bf10c4744b8aba969a0caac39922dbbf9bce454b87e3e685f5bfa9043ecabacca090650278ab2d081bc2d5cb
SSDEEP

6144:NloZM+rIkd8g+EtXHkv/iD4tTXCl38e1m2i8nUJfEm:PoZtL+EP8kda4mfE

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/4036-1-0x000001EF42940000-0x000001EF42986000-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
4644	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
4	discord.com
6	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
1	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3360	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2520	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4036	Solara.exe
4644	powershell.exe
4644	powershell.exe
4288	powershell.exe
4288	powershell.exe
3496	powershell.exe
3496	powershell.exe
1828	powershell.exe
1828	powershell.exe
4692	powershell.exe
4692	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4036	Solara.exe
Token: SeIncreaseQuotaPrivilege	4868	wmic.exe
Token: SeSecurityPrivilege	4868	wmic.exe
Token: SeTakeOwnershipPrivilege	4868	wmic.exe
Token: SeLoadDriverPrivilege	4868	wmic.exe
Token: SeSystemProfilePrivilege	4868	wmic.exe
Token: SeSystemtimePrivilege	4868	wmic.exe
Token: SeProfSingleProcessPrivilege	4868	wmic.exe
Token: SeIncBasePriorityPrivilege	4868	wmic.exe
Token: SeCreatePagefilePrivilege	4868	wmic.exe
Token: SeBackupPrivilege	4868	wmic.exe
Token: SeRestorePrivilege	4868	wmic.exe
Token: SeShutdownPrivilege	4868	wmic.exe
Token: SeDebugPrivilege	4868	wmic.exe
Token: SeSystemEnvironmentPrivilege	4868	wmic.exe
Token: SeRemoteShutdownPrivilege	4868	wmic.exe
Token: SeUndockPrivilege	4868	wmic.exe
Token: SeManageVolumePrivilege	4868	wmic.exe
Token: 33	4868	wmic.exe
Token: 34	4868	wmic.exe
Token: 35	4868	wmic.exe
Token: 36	4868	wmic.exe
Token: SeIncreaseQuotaPrivilege	4868	wmic.exe
Token: SeSecurityPrivilege	4868	wmic.exe
Token: SeTakeOwnershipPrivilege	4868	wmic.exe
Token: SeLoadDriverPrivilege	4868	wmic.exe
Token: SeSystemProfilePrivilege	4868	wmic.exe
Token: SeSystemtimePrivilege	4868	wmic.exe
Token: SeProfSingleProcessPrivilege	4868	wmic.exe
Token: SeIncBasePriorityPrivilege	4868	wmic.exe
Token: SeCreatePagefilePrivilege	4868	wmic.exe
Token: SeBackupPrivilege	4868	wmic.exe
Token: SeRestorePrivilege	4868	wmic.exe
Token: SeShutdownPrivilege	4868	wmic.exe
Token: SeDebugPrivilege	4868	wmic.exe
Token: SeSystemEnvironmentPrivilege	4868	wmic.exe
Token: SeRemoteShutdownPrivilege	4868	wmic.exe
Token: SeUndockPrivilege	4868	wmic.exe
Token: SeManageVolumePrivilege	4868	wmic.exe
Token: 33	4868	wmic.exe
Token: 34	4868	wmic.exe
Token: 35	4868	wmic.exe
Token: 36	4868	wmic.exe
Token: SeDebugPrivilege	4644	powershell.exe
Token: SeDebugPrivilege	4288	powershell.exe
Token: SeDebugPrivilege	3496	powershell.exe
Token: SeDebugPrivilege	1828	powershell.exe
Token: SeIncreaseQuotaPrivilege	1964	wmic.exe
Token: SeSecurityPrivilege	1964	wmic.exe
Token: SeTakeOwnershipPrivilege	1964	wmic.exe
Token: SeLoadDriverPrivilege	1964	wmic.exe
Token: SeSystemProfilePrivilege	1964	wmic.exe
Token: SeSystemtimePrivilege	1964	wmic.exe
Token: SeProfSingleProcessPrivilege	1964	wmic.exe
Token: SeIncBasePriorityPrivilege	1964	wmic.exe
Token: SeCreatePagefilePrivilege	1964	wmic.exe
Token: SeBackupPrivilege	1964	wmic.exe
Token: SeRestorePrivilege	1964	wmic.exe
Token: SeShutdownPrivilege	1964	wmic.exe
Token: SeDebugPrivilege	1964	wmic.exe
Token: SeSystemEnvironmentPrivilege	1964	wmic.exe
Token: SeRemoteShutdownPrivilege	1964	wmic.exe
Token: SeUndockPrivilege	1964	wmic.exe
Token: SeManageVolumePrivilege	1964	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4036 wrote to memory of 4868	4036	Solara.exe	81
PID 4036 wrote to memory of 4868	4036	Solara.exe	81
PID 4036 wrote to memory of 2916	4036	Solara.exe	84
PID 4036 wrote to memory of 2916	4036	Solara.exe	84
PID 4036 wrote to memory of 4644	4036	Solara.exe	86
PID 4036 wrote to memory of 4644	4036	Solara.exe	86
PID 4036 wrote to memory of 4288	4036	Solara.exe	89
PID 4036 wrote to memory of 4288	4036	Solara.exe	89
PID 4036 wrote to memory of 3496	4036	Solara.exe	91
PID 4036 wrote to memory of 3496	4036	Solara.exe	91
PID 4036 wrote to memory of 1828	4036	Solara.exe	93
PID 4036 wrote to memory of 1828	4036	Solara.exe	93
PID 4036 wrote to memory of 1964	4036	Solara.exe	95
PID 4036 wrote to memory of 1964	4036	Solara.exe	95
PID 4036 wrote to memory of 1508	4036	Solara.exe	97
PID 4036 wrote to memory of 1508	4036	Solara.exe	97
PID 4036 wrote to memory of 3688	4036	Solara.exe	99
PID 4036 wrote to memory of 3688	4036	Solara.exe	99
PID 4036 wrote to memory of 4692	4036	Solara.exe	101
PID 4036 wrote to memory of 4692	4036	Solara.exe	101
PID 4036 wrote to memory of 3360	4036	Solara.exe	103
PID 4036 wrote to memory of 3360	4036	Solara.exe	103
PID 4036 wrote to memory of 4824	4036	Solara.exe	105
PID 4036 wrote to memory of 4824	4036	Solara.exe	105
PID 4824 wrote to memory of 2520	4824	cmd.exe	107
PID 4824 wrote to memory of 2520	4824	cmd.exe	107

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2916	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:4036
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4868
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Solara.exe"
  2⤵
  - Views/modifies file attributes
  PID:2916
- 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:4644
- 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:4288
- 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:3496
- 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:1828
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1964
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1508
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3688
- 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:4692
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3360
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Solara.exe" && pause
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4824
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:2520

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

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
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

Filesize
944B

MD5
6903d57eed54e89b68ebb957928d1b99

SHA1
fade011fbf2e4bc044d41e380cf70bd6a9f73212

SHA256
36cbb00b016c9f97645fb628ef72b524dfbdf6e08d626e5c837bbbb9075dcb52

SHA512
c192ea9810fd22de8378269235c1035aa1fe1975a53c876fe4a7acc726c020f94773c21e4e4771133f9fcedb0209f0a5324c594c1db5b28fe1b27644db4fdc9e

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

Filesize
948B

MD5
6490e5c0581c173062323b1c20cfd9ff

SHA1
1652893659f99b780fd9733243637eb7795f5212

SHA256
a552b6d7bebb1714f01a5f3d8b5493e1b369c93ee68c62256dfddcc7f3f4fe79

SHA512
fdb077b40b4371a74cb70ae74d28a4433399e5c4a69fe9a5652409a62c2435d3197da42808d5cb65e9b7ff35bc2e593ad70fa83581c7fd672d631b25f53d3c65

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
2e4ce193b91cf2884816e810206c68d4

SHA1
b060d309be5e2ebfec4d8a45629fe9c832b025c0

SHA256
287481dc48be90f1a7469ec4bca5f3ee5a323ee5d1c599c1cc4212204b06f909

SHA512
5f11b694ecee875b3758e675200af0d42a32c7bec2a4fcb15d823531c7d680b47cd1711d6eb8e1e3ceb48f569b136286777d4ac59edf99c7c7bf51420e072add

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_p30mhrai.ahx.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4036-67-0x000001EF5D0D0000-0x000001EF5D0DA000-memory.dmp

Filesize
40KB

Download
memory/4036-33-0x000001EF5D090000-0x000001EF5D0AE000-memory.dmp

Filesize
120KB

Download
memory/4036-85-0x00007FF97DDE0000-0x00007FF97E8A2000-memory.dmp

Filesize
10.8MB

Download
memory/4036-68-0x000001EF5D1E0000-0x000001EF5D1F2000-memory.dmp

Filesize
72KB

Download
memory/4036-2-0x00007FF97DDE0000-0x00007FF97E8A2000-memory.dmp

Filesize
10.8MB

Download
memory/4036-31-0x000001EF5D110000-0x000001EF5D186000-memory.dmp

Filesize
472KB

Download
memory/4036-32-0x000001EF5D190000-0x000001EF5D1E0000-memory.dmp

Filesize
320KB

Download
memory/4036-0-0x00007FF97DDE3000-0x00007FF97DDE5000-memory.dmp

Filesize
8KB

Download
memory/4036-1-0x000001EF42940000-0x000001EF42986000-memory.dmp

Filesize
280KB

Download
memory/4644-14-0x00007FF97DDE0000-0x00007FF97E8A2000-memory.dmp

Filesize
10.8MB

Download
memory/4644-13-0x00007FF97DDE0000-0x00007FF97E8A2000-memory.dmp

Filesize
10.8MB

Download
memory/4644-11-0x000001E6532C0000-0x000001E6532E2000-memory.dmp

Filesize
136KB

Download
memory/4644-12-0x00007FF97DDE0000-0x00007FF97E8A2000-memory.dmp

Filesize
10.8MB

Download
memory/4644-17-0x00007FF97DDE0000-0x00007FF97E8A2000-memory.dmp

Filesize
10.8MB

Download