umbral | 46a67cdc899f61ccb6324d187d56b389f720d72beb02594fd60fdc4a8ca62ab4

Analysis

max time kernel
122s
max time network
128s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
30-12-2024 23:45

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General

Target

FizzyLoader.exe
Size

229KB
MD5

b56af795f8b7edc6f35a9e905921ed0e
SHA1

c82cb0088bc9c93fd9a491ad278f410d44265a4d
SHA256

46a67cdc899f61ccb6324d187d56b389f720d72beb02594fd60fdc4a8ca62ab4
SHA512

c35b429e243845337903fa5cc6853c6921514b2fcd84e7788607aa47414be9b2101c8b87acd1766666daa7fc0cdd2b7a5be19ac5754db8f12c3e262ea792f9c6
SSDEEP

6144:dloZM+rIkd8g+EtXHkv/iD4M7+QWRJ6RvSgR1E9/gF8e1mfIi:/oZtL+EP8M7+QWRJ6RvSgR1Ecqx

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2880-1-0x0000000000230000-0x0000000000270000-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

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

execution

PowerShell

T1059.001

pid	Process
2632	powershell.exe
2548	powershell.exe
2456	powershell.exe
2188	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Deletes itself 1 IoCs

pid	Process
760	cmd.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
9	discord.com
10	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

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
760	cmd.exe
2352	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2200	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2352	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2880	FizzyLoader.exe
2632	powershell.exe
2548	powershell.exe
2456	powershell.exe
2736	powershell.exe
2188	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2880	FizzyLoader.exe
Token: SeIncreaseQuotaPrivilege	3016	wmic.exe
Token: SeSecurityPrivilege	3016	wmic.exe
Token: SeTakeOwnershipPrivilege	3016	wmic.exe
Token: SeLoadDriverPrivilege	3016	wmic.exe
Token: SeSystemProfilePrivilege	3016	wmic.exe
Token: SeSystemtimePrivilege	3016	wmic.exe
Token: SeProfSingleProcessPrivilege	3016	wmic.exe
Token: SeIncBasePriorityPrivilege	3016	wmic.exe
Token: SeCreatePagefilePrivilege	3016	wmic.exe
Token: SeBackupPrivilege	3016	wmic.exe
Token: SeRestorePrivilege	3016	wmic.exe
Token: SeShutdownPrivilege	3016	wmic.exe
Token: SeDebugPrivilege	3016	wmic.exe
Token: SeSystemEnvironmentPrivilege	3016	wmic.exe
Token: SeRemoteShutdownPrivilege	3016	wmic.exe
Token: SeUndockPrivilege	3016	wmic.exe
Token: SeManageVolumePrivilege	3016	wmic.exe
Token: 33	3016	wmic.exe
Token: 34	3016	wmic.exe
Token: 35	3016	wmic.exe
Token: SeIncreaseQuotaPrivilege	3016	wmic.exe
Token: SeSecurityPrivilege	3016	wmic.exe
Token: SeTakeOwnershipPrivilege	3016	wmic.exe
Token: SeLoadDriverPrivilege	3016	wmic.exe
Token: SeSystemProfilePrivilege	3016	wmic.exe
Token: SeSystemtimePrivilege	3016	wmic.exe
Token: SeProfSingleProcessPrivilege	3016	wmic.exe
Token: SeIncBasePriorityPrivilege	3016	wmic.exe
Token: SeCreatePagefilePrivilege	3016	wmic.exe
Token: SeBackupPrivilege	3016	wmic.exe
Token: SeRestorePrivilege	3016	wmic.exe
Token: SeShutdownPrivilege	3016	wmic.exe
Token: SeDebugPrivilege	3016	wmic.exe
Token: SeSystemEnvironmentPrivilege	3016	wmic.exe
Token: SeRemoteShutdownPrivilege	3016	wmic.exe
Token: SeUndockPrivilege	3016	wmic.exe
Token: SeManageVolumePrivilege	3016	wmic.exe
Token: 33	3016	wmic.exe
Token: 34	3016	wmic.exe
Token: 35	3016	wmic.exe
Token: SeDebugPrivilege	2632	powershell.exe
Token: SeDebugPrivilege	2548	powershell.exe
Token: SeDebugPrivilege	2456	powershell.exe
Token: SeDebugPrivilege	2736	powershell.exe
Token: SeIncreaseQuotaPrivilege	2376	wmic.exe
Token: SeSecurityPrivilege	2376	wmic.exe
Token: SeTakeOwnershipPrivilege	2376	wmic.exe
Token: SeLoadDriverPrivilege	2376	wmic.exe
Token: SeSystemProfilePrivilege	2376	wmic.exe
Token: SeSystemtimePrivilege	2376	wmic.exe
Token: SeProfSingleProcessPrivilege	2376	wmic.exe
Token: SeIncBasePriorityPrivilege	2376	wmic.exe
Token: SeCreatePagefilePrivilege	2376	wmic.exe
Token: SeBackupPrivilege	2376	wmic.exe
Token: SeRestorePrivilege	2376	wmic.exe
Token: SeShutdownPrivilege	2376	wmic.exe
Token: SeDebugPrivilege	2376	wmic.exe
Token: SeSystemEnvironmentPrivilege	2376	wmic.exe
Token: SeRemoteShutdownPrivilege	2376	wmic.exe
Token: SeUndockPrivilege	2376	wmic.exe
Token: SeManageVolumePrivilege	2376	wmic.exe
Token: 33	2376	wmic.exe
Token: 34	2376	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2880 wrote to memory of 3016	2880	FizzyLoader.exe	30
PID 2880 wrote to memory of 3016	2880	FizzyLoader.exe	30
PID 2880 wrote to memory of 3016	2880	FizzyLoader.exe	30
PID 2880 wrote to memory of 2900	2880	FizzyLoader.exe	33
PID 2880 wrote to memory of 2900	2880	FizzyLoader.exe	33
PID 2880 wrote to memory of 2900	2880	FizzyLoader.exe	33
PID 2880 wrote to memory of 2632	2880	FizzyLoader.exe	35
PID 2880 wrote to memory of 2632	2880	FizzyLoader.exe	35
PID 2880 wrote to memory of 2632	2880	FizzyLoader.exe	35
PID 2880 wrote to memory of 2548	2880	FizzyLoader.exe	37
PID 2880 wrote to memory of 2548	2880	FizzyLoader.exe	37
PID 2880 wrote to memory of 2548	2880	FizzyLoader.exe	37
PID 2880 wrote to memory of 2456	2880	FizzyLoader.exe	39
PID 2880 wrote to memory of 2456	2880	FizzyLoader.exe	39
PID 2880 wrote to memory of 2456	2880	FizzyLoader.exe	39
PID 2880 wrote to memory of 2736	2880	FizzyLoader.exe	41
PID 2880 wrote to memory of 2736	2880	FizzyLoader.exe	41
PID 2880 wrote to memory of 2736	2880	FizzyLoader.exe	41
PID 2880 wrote to memory of 2376	2880	FizzyLoader.exe	43
PID 2880 wrote to memory of 2376	2880	FizzyLoader.exe	43
PID 2880 wrote to memory of 2376	2880	FizzyLoader.exe	43
PID 2880 wrote to memory of 524	2880	FizzyLoader.exe	45
PID 2880 wrote to memory of 524	2880	FizzyLoader.exe	45
PID 2880 wrote to memory of 524	2880	FizzyLoader.exe	45
PID 2880 wrote to memory of 1556	2880	FizzyLoader.exe	47
PID 2880 wrote to memory of 1556	2880	FizzyLoader.exe	47
PID 2880 wrote to memory of 1556	2880	FizzyLoader.exe	47
PID 2880 wrote to memory of 2188	2880	FizzyLoader.exe	49
PID 2880 wrote to memory of 2188	2880	FizzyLoader.exe	49
PID 2880 wrote to memory of 2188	2880	FizzyLoader.exe	49
PID 2880 wrote to memory of 2200	2880	FizzyLoader.exe	51
PID 2880 wrote to memory of 2200	2880	FizzyLoader.exe	51
PID 2880 wrote to memory of 2200	2880	FizzyLoader.exe	51
PID 2880 wrote to memory of 760	2880	FizzyLoader.exe	53
PID 2880 wrote to memory of 760	2880	FizzyLoader.exe	53
PID 2880 wrote to memory of 760	2880	FizzyLoader.exe	53
PID 760 wrote to memory of 2352	760	cmd.exe	55
PID 760 wrote to memory of 2352	760	cmd.exe	55
PID 760 wrote to memory of 2352	760	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2900	attrib.exe

C:\Users\Admin\AppData\Local\Temp\FizzyLoader.exe
"C:\Users\Admin\AppData\Local\Temp\FizzyLoader.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2880
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3016
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\FizzyLoader.exe"
  2⤵
  - Views/modifies file attributes
  PID:2900
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\FizzyLoader.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2632
- 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:2548
- 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:2456
- 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:2736
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2376
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:524
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1556
- 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:2188
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2200
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\FizzyLoader.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:760
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2352

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\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
2a9e288538d8023c81d34df28219d5c4

SHA1
b4d0af796d24c5cdd68bfb63700a8cfadc1e4210

SHA256
c806a31257246922ba26e19812eb422eb7abef4e70d1b60be6945fb2e6c524da

SHA512
c4d72e643f036f0f32ccb4c69f84d387068dcd9d6fb6e40dc03e1a7711f97b66d6b8acbde4b6f780f0eae361f6f7033d5665c18ec15754e2697b632bdcea1a4a

Download Submit
memory/2188-47-0x0000000002410000-0x0000000002418000-memory.dmp

Filesize
32KB

Download
memory/2548-15-0x0000000002420000-0x0000000002428000-memory.dmp

Filesize
32KB

Download
memory/2548-14-0x000000001B240000-0x000000001B522000-memory.dmp

Filesize
2.9MB

Download
memory/2632-7-0x000000001B2F0000-0x000000001B5D2000-memory.dmp

Filesize
2.9MB

Download
memory/2632-8-0x0000000002390000-0x0000000002398000-memory.dmp

Filesize
32KB

Download
memory/2880-0-0x000007FEF5A53000-0x000007FEF5A54000-memory.dmp

Filesize
4KB

Download
memory/2880-2-0x000007FEF5A50000-0x000007FEF643C000-memory.dmp

Filesize
9.9MB

Download
memory/2880-37-0x000007FEF5A53000-0x000007FEF5A54000-memory.dmp

Filesize
4KB

Download
memory/2880-41-0x000007FEF5A50000-0x000007FEF643C000-memory.dmp

Filesize
9.9MB

Download
memory/2880-1-0x0000000000230000-0x0000000000270000-memory.dmp

Filesize
256KB

Download
memory/2880-52-0x000007FEF5A50000-0x000007FEF643C000-memory.dmp

Filesize
9.9MB

Download