umbral | f25954c0bee0de252c3148d22de7b37780124b0065cebf09cfca2fce9fbef080

Analysis

max time kernel
61s
max time network
62s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
03-07-2024 14:34

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

SolaraBootstrapper.exe
Size

227KB
MD5

666f6194638d6e82977e48cbb6c69558
SHA1

df3cdcf3a47544982d88b3a8ee6c499ebab2b4f2
SHA256

f25954c0bee0de252c3148d22de7b37780124b0065cebf09cfca2fce9fbef080
SHA512

dd9f868fcdae3205ca1714390a1dbe8c598e1c16e785cb2491bbb45e444a9f2fe3a04d0b4004c1c1575090c610241857439e2c29f8e82ec3b060700bb3e4e177
SSDEEP

6144:+loZMLrIkd8g+EtXHkv/iD4wDvr7ByalogRj++70vb8e1muzri:ooZ0L+EP8wDvr7ByalogRj++7mZm

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/3940-0-0x000001F208E80000-0x000001F208EC0000-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
1052	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	SolaraBootstrapper.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
24	discord.com
25	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

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2040	wmic.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
3940	SolaraBootstrapper.exe
1052	powershell.exe
1052	powershell.exe
824	powershell.exe
824	powershell.exe
4036	powershell.exe
4036	powershell.exe
2356	powershell.exe
2356	powershell.exe
1804	powershell.exe
1804	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3940	SolaraBootstrapper.exe
Token: SeIncreaseQuotaPrivilege	468	wmic.exe
Token: SeSecurityPrivilege	468	wmic.exe
Token: SeTakeOwnershipPrivilege	468	wmic.exe
Token: SeLoadDriverPrivilege	468	wmic.exe
Token: SeSystemProfilePrivilege	468	wmic.exe
Token: SeSystemtimePrivilege	468	wmic.exe
Token: SeProfSingleProcessPrivilege	468	wmic.exe
Token: SeIncBasePriorityPrivilege	468	wmic.exe
Token: SeCreatePagefilePrivilege	468	wmic.exe
Token: SeBackupPrivilege	468	wmic.exe
Token: SeRestorePrivilege	468	wmic.exe
Token: SeShutdownPrivilege	468	wmic.exe
Token: SeDebugPrivilege	468	wmic.exe
Token: SeSystemEnvironmentPrivilege	468	wmic.exe
Token: SeRemoteShutdownPrivilege	468	wmic.exe
Token: SeUndockPrivilege	468	wmic.exe
Token: SeManageVolumePrivilege	468	wmic.exe
Token: 33	468	wmic.exe
Token: 34	468	wmic.exe
Token: 35	468	wmic.exe
Token: 36	468	wmic.exe
Token: SeIncreaseQuotaPrivilege	468	wmic.exe
Token: SeSecurityPrivilege	468	wmic.exe
Token: SeTakeOwnershipPrivilege	468	wmic.exe
Token: SeLoadDriverPrivilege	468	wmic.exe
Token: SeSystemProfilePrivilege	468	wmic.exe
Token: SeSystemtimePrivilege	468	wmic.exe
Token: SeProfSingleProcessPrivilege	468	wmic.exe
Token: SeIncBasePriorityPrivilege	468	wmic.exe
Token: SeCreatePagefilePrivilege	468	wmic.exe
Token: SeBackupPrivilege	468	wmic.exe
Token: SeRestorePrivilege	468	wmic.exe
Token: SeShutdownPrivilege	468	wmic.exe
Token: SeDebugPrivilege	468	wmic.exe
Token: SeSystemEnvironmentPrivilege	468	wmic.exe
Token: SeRemoteShutdownPrivilege	468	wmic.exe
Token: SeUndockPrivilege	468	wmic.exe
Token: SeManageVolumePrivilege	468	wmic.exe
Token: 33	468	wmic.exe
Token: 34	468	wmic.exe
Token: 35	468	wmic.exe
Token: 36	468	wmic.exe
Token: SeDebugPrivilege	1052	powershell.exe
Token: SeDebugPrivilege	824	powershell.exe
Token: SeDebugPrivilege	4036	powershell.exe
Token: SeDebugPrivilege	2356	powershell.exe
Token: SeIncreaseQuotaPrivilege	4000	wmic.exe
Token: SeSecurityPrivilege	4000	wmic.exe
Token: SeTakeOwnershipPrivilege	4000	wmic.exe
Token: SeLoadDriverPrivilege	4000	wmic.exe
Token: SeSystemProfilePrivilege	4000	wmic.exe
Token: SeSystemtimePrivilege	4000	wmic.exe
Token: SeProfSingleProcessPrivilege	4000	wmic.exe
Token: SeIncBasePriorityPrivilege	4000	wmic.exe
Token: SeCreatePagefilePrivilege	4000	wmic.exe
Token: SeBackupPrivilege	4000	wmic.exe
Token: SeRestorePrivilege	4000	wmic.exe
Token: SeShutdownPrivilege	4000	wmic.exe
Token: SeDebugPrivilege	4000	wmic.exe
Token: SeSystemEnvironmentPrivilege	4000	wmic.exe
Token: SeRemoteShutdownPrivilege	4000	wmic.exe
Token: SeUndockPrivilege	4000	wmic.exe
Token: SeManageVolumePrivilege	4000	wmic.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 3940 wrote to memory of 468	3940	SolaraBootstrapper.exe	81
PID 3940 wrote to memory of 468	3940	SolaraBootstrapper.exe	81
PID 3940 wrote to memory of 1052	3940	SolaraBootstrapper.exe	84
PID 3940 wrote to memory of 1052	3940	SolaraBootstrapper.exe	84
PID 3940 wrote to memory of 824	3940	SolaraBootstrapper.exe	86
PID 3940 wrote to memory of 824	3940	SolaraBootstrapper.exe	86
PID 3940 wrote to memory of 4036	3940	SolaraBootstrapper.exe	88
PID 3940 wrote to memory of 4036	3940	SolaraBootstrapper.exe	88
PID 3940 wrote to memory of 2356	3940	SolaraBootstrapper.exe	90
PID 3940 wrote to memory of 2356	3940	SolaraBootstrapper.exe	90
PID 3940 wrote to memory of 4000	3940	SolaraBootstrapper.exe	92
PID 3940 wrote to memory of 4000	3940	SolaraBootstrapper.exe	92
PID 3940 wrote to memory of 4416	3940	SolaraBootstrapper.exe	94
PID 3940 wrote to memory of 4416	3940	SolaraBootstrapper.exe	94
PID 3940 wrote to memory of 4564	3940	SolaraBootstrapper.exe	96
PID 3940 wrote to memory of 4564	3940	SolaraBootstrapper.exe	96
PID 3940 wrote to memory of 1804	3940	SolaraBootstrapper.exe	98
PID 3940 wrote to memory of 1804	3940	SolaraBootstrapper.exe	98
PID 3940 wrote to memory of 2040	3940	SolaraBootstrapper.exe	100
PID 3940 wrote to memory of 2040	3940	SolaraBootstrapper.exe	100

C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.exe
"C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3940
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:468
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1052
- 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:824
- 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:4036
- 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:2356
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4000
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:4416
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4564
- 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:1804
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2040

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

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

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
e243a38635ff9a06c87c2a61a2200656

SHA1
ecd95ed5bf1a9fbe96a8448fc2814a0210fa2afc

SHA256
af5782703f3f2d5a29fb313dae6680a64134db26064d4a321a3f23b75f6ca00f

SHA512
4418957a1b10eee44cf270c81816ae707352411c4f5ac14b6b61ab537c91480e24e0a0a2c276a6291081b4984c123cf673a45dcedb0ceeef682054ba0fc19cb4

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

Filesize
948B

MD5
c9b6705519e1eef08f86c4ba5f4286f3

SHA1
6c6b179e452ecee2673a1d4fe128f1c06f70577f

SHA256
0f9cad44a79126871580e19b01dc3f880c5173b1faaf8b9018d5d1f829714705

SHA512
6d8f85a7a8b0b124530f36a157cd0441b5c1eacdc35e274af9fbf0569d03d1d5e468651a5b2425f0215c282ecfa7b1ffeaeeaf18612822f00bd14306d30640c7

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
53a9c998f46cd558e81457f9dc165468

SHA1
2497cb82e35834bf84da2c16525a33e8d842f185

SHA256
7566c842d093f74db8d719652643a43d1ed4526507214fbd4014548cba5add91

SHA512
cae1b83dc93940da50606781fec98337cf8dc777c2b6a6848588eb237ffeef371cfe48a669de2b6a173119fcd84bfd4a9c811a66f6c06ebe344aea7187b26ee1

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_eetwhxif.k1a.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1052-3-0x00007FFF04090000-0x00007FFF04B51000-memory.dmp

Filesize
10.8MB

Download
memory/1052-9-0x000001D773E80000-0x000001D773EA2000-memory.dmp

Filesize
136KB

Download
memory/1052-16-0x00007FFF04090000-0x00007FFF04B51000-memory.dmp

Filesize
10.8MB

Download
memory/3940-31-0x000001F2235F0000-0x000001F223666000-memory.dmp

Filesize
472KB

Download
memory/3940-32-0x000001F223670000-0x000001F2236C0000-memory.dmp

Filesize
320KB

Download
memory/3940-33-0x000001F2233F0000-0x000001F22340E000-memory.dmp

Filesize
120KB

Download
memory/3940-1-0x00007FFF04093000-0x00007FFF04095000-memory.dmp

Filesize
8KB

Download
memory/3940-0-0x000001F208E80000-0x000001F208EC0000-memory.dmp

Filesize
256KB

Download
memory/3940-69-0x000001F223570000-0x000001F22357A000-memory.dmp

Filesize
40KB

Download
memory/3940-70-0x000001F2235C0000-0x000001F2235D2000-memory.dmp

Filesize
72KB

Download
memory/3940-2-0x00007FFF04090000-0x00007FFF04B51000-memory.dmp

Filesize
10.8MB

Download
memory/3940-88-0x00007FFF04090000-0x00007FFF04B51000-memory.dmp

Filesize
10.8MB

Download