umbral | f0bfbd7e921feaaf6d0b701cf58fa72e665fb20cc945bdb5ebf22c4c436eb6a7

Analysis

max time kernel
94s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
15-01-2025 12:09

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General

Target

SolaraBootstrapper.V210.exe
Size

231KB
MD5

a3b5e75b75b23ccdc2d0ad1f6cdce98c
SHA1

a78fa26acdfb97af1ff1ba42d5467f9c90162b4a
SHA256

f0bfbd7e921feaaf6d0b701cf58fa72e665fb20cc945bdb5ebf22c4c436eb6a7
SHA512

5e51aa1e84378573cda2920d17e5c0737c5c432a074324dffa2b0313794519c10b66e27c99f8d59c261b8c0b6481e3135c524c3ef6b8a8331898a0840689d9a3
SSDEEP

6144:BloZM+rIkd8g+EtXHkv/iD4WAaJdLocD9abtIExcqb8e1m85i:zoZtL+EP8WAaJdLocD9abtIExHe

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/1128-1-0x000002702D800000-0x000002702D840000-memory.dmp	family_umbral

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

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
220	powershell.exe
1988	powershell.exe
3896	powershell.exe
2708	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	SolaraBootstrapper.V210.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
20	discord.com
21	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
7	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
4956	PING.EXE
4308	cmd.exe

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2868	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4956	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
1128	SolaraBootstrapper.V210.exe
2708	powershell.exe
2708	powershell.exe
220	powershell.exe
220	powershell.exe
1988	powershell.exe
1988	powershell.exe
1516	powershell.exe
1516	powershell.exe
3896	powershell.exe
3896	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1128	SolaraBootstrapper.V210.exe
Token: SeIncreaseQuotaPrivilege	4216	wmic.exe
Token: SeSecurityPrivilege	4216	wmic.exe
Token: SeTakeOwnershipPrivilege	4216	wmic.exe
Token: SeLoadDriverPrivilege	4216	wmic.exe
Token: SeSystemProfilePrivilege	4216	wmic.exe
Token: SeSystemtimePrivilege	4216	wmic.exe
Token: SeProfSingleProcessPrivilege	4216	wmic.exe
Token: SeIncBasePriorityPrivilege	4216	wmic.exe
Token: SeCreatePagefilePrivilege	4216	wmic.exe
Token: SeBackupPrivilege	4216	wmic.exe
Token: SeRestorePrivilege	4216	wmic.exe
Token: SeShutdownPrivilege	4216	wmic.exe
Token: SeDebugPrivilege	4216	wmic.exe
Token: SeSystemEnvironmentPrivilege	4216	wmic.exe
Token: SeRemoteShutdownPrivilege	4216	wmic.exe
Token: SeUndockPrivilege	4216	wmic.exe
Token: SeManageVolumePrivilege	4216	wmic.exe
Token: 33	4216	wmic.exe
Token: 34	4216	wmic.exe
Token: 35	4216	wmic.exe
Token: 36	4216	wmic.exe
Token: SeIncreaseQuotaPrivilege	4216	wmic.exe
Token: SeSecurityPrivilege	4216	wmic.exe
Token: SeTakeOwnershipPrivilege	4216	wmic.exe
Token: SeLoadDriverPrivilege	4216	wmic.exe
Token: SeSystemProfilePrivilege	4216	wmic.exe
Token: SeSystemtimePrivilege	4216	wmic.exe
Token: SeProfSingleProcessPrivilege	4216	wmic.exe
Token: SeIncBasePriorityPrivilege	4216	wmic.exe
Token: SeCreatePagefilePrivilege	4216	wmic.exe
Token: SeBackupPrivilege	4216	wmic.exe
Token: SeRestorePrivilege	4216	wmic.exe
Token: SeShutdownPrivilege	4216	wmic.exe
Token: SeDebugPrivilege	4216	wmic.exe
Token: SeSystemEnvironmentPrivilege	4216	wmic.exe
Token: SeRemoteShutdownPrivilege	4216	wmic.exe
Token: SeUndockPrivilege	4216	wmic.exe
Token: SeManageVolumePrivilege	4216	wmic.exe
Token: 33	4216	wmic.exe
Token: 34	4216	wmic.exe
Token: 35	4216	wmic.exe
Token: 36	4216	wmic.exe
Token: SeDebugPrivilege	2708	powershell.exe
Token: SeDebugPrivilege	220	powershell.exe
Token: SeDebugPrivilege	1988	powershell.exe
Token: SeDebugPrivilege	1516	powershell.exe
Token: SeIncreaseQuotaPrivilege	3844	wmic.exe
Token: SeSecurityPrivilege	3844	wmic.exe
Token: SeTakeOwnershipPrivilege	3844	wmic.exe
Token: SeLoadDriverPrivilege	3844	wmic.exe
Token: SeSystemProfilePrivilege	3844	wmic.exe
Token: SeSystemtimePrivilege	3844	wmic.exe
Token: SeProfSingleProcessPrivilege	3844	wmic.exe
Token: SeIncBasePriorityPrivilege	3844	wmic.exe
Token: SeCreatePagefilePrivilege	3844	wmic.exe
Token: SeBackupPrivilege	3844	wmic.exe
Token: SeRestorePrivilege	3844	wmic.exe
Token: SeShutdownPrivilege	3844	wmic.exe
Token: SeDebugPrivilege	3844	wmic.exe
Token: SeSystemEnvironmentPrivilege	3844	wmic.exe
Token: SeRemoteShutdownPrivilege	3844	wmic.exe
Token: SeUndockPrivilege	3844	wmic.exe
Token: SeManageVolumePrivilege	3844	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1128 wrote to memory of 4216	1128	SolaraBootstrapper.V210.exe	83
PID 1128 wrote to memory of 4216	1128	SolaraBootstrapper.V210.exe	83
PID 1128 wrote to memory of 1952	1128	SolaraBootstrapper.V210.exe	86
PID 1128 wrote to memory of 1952	1128	SolaraBootstrapper.V210.exe	86
PID 1128 wrote to memory of 2708	1128	SolaraBootstrapper.V210.exe	88
PID 1128 wrote to memory of 2708	1128	SolaraBootstrapper.V210.exe	88
PID 1128 wrote to memory of 220	1128	SolaraBootstrapper.V210.exe	90
PID 1128 wrote to memory of 220	1128	SolaraBootstrapper.V210.exe	90
PID 1128 wrote to memory of 1988	1128	SolaraBootstrapper.V210.exe	92
PID 1128 wrote to memory of 1988	1128	SolaraBootstrapper.V210.exe	92
PID 1128 wrote to memory of 1516	1128	SolaraBootstrapper.V210.exe	94
PID 1128 wrote to memory of 1516	1128	SolaraBootstrapper.V210.exe	94
PID 1128 wrote to memory of 3844	1128	SolaraBootstrapper.V210.exe	96
PID 1128 wrote to memory of 3844	1128	SolaraBootstrapper.V210.exe	96
PID 1128 wrote to memory of 4712	1128	SolaraBootstrapper.V210.exe	99
PID 1128 wrote to memory of 4712	1128	SolaraBootstrapper.V210.exe	99
PID 1128 wrote to memory of 5092	1128	SolaraBootstrapper.V210.exe	101
PID 1128 wrote to memory of 5092	1128	SolaraBootstrapper.V210.exe	101
PID 1128 wrote to memory of 3896	1128	SolaraBootstrapper.V210.exe	103
PID 1128 wrote to memory of 3896	1128	SolaraBootstrapper.V210.exe	103
PID 1128 wrote to memory of 2868	1128	SolaraBootstrapper.V210.exe	105
PID 1128 wrote to memory of 2868	1128	SolaraBootstrapper.V210.exe	105
PID 1128 wrote to memory of 4308	1128	SolaraBootstrapper.V210.exe	107
PID 1128 wrote to memory of 4308	1128	SolaraBootstrapper.V210.exe	107
PID 4308 wrote to memory of 4956	4308	cmd.exe	109
PID 4308 wrote to memory of 4956	4308	cmd.exe	109

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1952	attrib.exe

C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.V210.exe
"C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.V210.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1128
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4216
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.V210.exe"
  2⤵
  - Views/modifies file attributes
  PID:1952
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.V210.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2708
- 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:220
- 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:1988
- 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:1516
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3844
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:4712
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:5092
- 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:3896
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2868
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.V210.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4308
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4956

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
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
948B

MD5
5824a6037c081fda5d46de274b6e2799

SHA1
526367a09300cbde430e8fb44e41cbe7a0937aac

SHA256
4d610d9cd32a20279c7133a726ff61820d6930e5aa18253ee1422f3a6f54953f

SHA512
a109b150f730cda78d5bee106bd232f9dca7500dfb7899c6919de2bd542e345ca271aa11809a24ea0a27dca158067ab3a2d5688ac0a2325185143245f1665582

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
7511c81925750deb7ad1b9b80eea8a8d

SHA1
6ea759b3cbd243ae11435c6d6c5ced185eb01f49

SHA256
5b49723a7773f2fe1f6093236e7b9b2c546f0873635d02346cb39535811234fa

SHA512
5f7e69316d39525d137a7a833f8c746ceef8f1b2295348393fb3244cca8b962fbaad0f7da49da453fe97e2c49b1f41f06138111ac5ff97fdc33c300350ec3a1b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4mj54rjh.ctw.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1128-72-0x0000027047CB0000-0x0000027047CBA000-memory.dmp

Filesize
40KB

Download
memory/1128-35-0x0000027047C60000-0x0000027047C7E000-memory.dmp

Filesize
120KB

Download
memory/1128-93-0x00007FFE58310000-0x00007FFE58DD1000-memory.dmp

Filesize
10.8MB

Download
memory/1128-73-0x0000027047D00000-0x0000027047D12000-memory.dmp

Filesize
72KB

Download
memory/1128-2-0x00007FFE58310000-0x00007FFE58DD1000-memory.dmp

Filesize
10.8MB

Download
memory/1128-33-0x0000027047F80000-0x0000027047FF6000-memory.dmp

Filesize
472KB

Download
memory/1128-34-0x0000027048050000-0x00000270480A0000-memory.dmp

Filesize
320KB

Download
memory/1128-0-0x00007FFE58313000-0x00007FFE58315000-memory.dmp

Filesize
8KB

Download
memory/1128-1-0x000002702D800000-0x000002702D840000-memory.dmp

Filesize
256KB

Download
memory/2708-15-0x00007FFE58310000-0x00007FFE58DD1000-memory.dmp

Filesize
10.8MB

Download
memory/2708-9-0x0000022A770F0000-0x0000022A77112000-memory.dmp

Filesize
136KB

Download
memory/2708-3-0x00007FFE58310000-0x00007FFE58DD1000-memory.dmp

Filesize
10.8MB

Download
memory/2708-14-0x00007FFE58310000-0x00007FFE58DD1000-memory.dmp

Filesize
10.8MB

Download
memory/2708-18-0x00007FFE58310000-0x00007FFE58DD1000-memory.dmp

Filesize
10.8MB

Download