umbral | 46a67cdc899f61ccb6324d187d56b389f720d72beb02594fd60fdc4a8ca62ab4

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
30/12/2024, 23:49

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General

Target

Fizzy Loader.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/2376-1-0x0000000000A80000-0x0000000000AC0000-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
2608	powershell.exe
2892	powershell.exe
2652	powershell.exe
1420	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Deletes itself 1 IoCs

pid	Process
572	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
572	cmd.exe
2564	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2252	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2564	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2376	Fizzy Loader.exe
2608	powershell.exe
2892	powershell.exe
2652	powershell.exe
2912	powershell.exe
1420	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2376	Fizzy Loader.exe
Token: SeIncreaseQuotaPrivilege	2100	wmic.exe
Token: SeSecurityPrivilege	2100	wmic.exe
Token: SeTakeOwnershipPrivilege	2100	wmic.exe
Token: SeLoadDriverPrivilege	2100	wmic.exe
Token: SeSystemProfilePrivilege	2100	wmic.exe
Token: SeSystemtimePrivilege	2100	wmic.exe
Token: SeProfSingleProcessPrivilege	2100	wmic.exe
Token: SeIncBasePriorityPrivilege	2100	wmic.exe
Token: SeCreatePagefilePrivilege	2100	wmic.exe
Token: SeBackupPrivilege	2100	wmic.exe
Token: SeRestorePrivilege	2100	wmic.exe
Token: SeShutdownPrivilege	2100	wmic.exe
Token: SeDebugPrivilege	2100	wmic.exe
Token: SeSystemEnvironmentPrivilege	2100	wmic.exe
Token: SeRemoteShutdownPrivilege	2100	wmic.exe
Token: SeUndockPrivilege	2100	wmic.exe
Token: SeManageVolumePrivilege	2100	wmic.exe
Token: 33	2100	wmic.exe
Token: 34	2100	wmic.exe
Token: 35	2100	wmic.exe
Token: SeIncreaseQuotaPrivilege	2100	wmic.exe
Token: SeSecurityPrivilege	2100	wmic.exe
Token: SeTakeOwnershipPrivilege	2100	wmic.exe
Token: SeLoadDriverPrivilege	2100	wmic.exe
Token: SeSystemProfilePrivilege	2100	wmic.exe
Token: SeSystemtimePrivilege	2100	wmic.exe
Token: SeProfSingleProcessPrivilege	2100	wmic.exe
Token: SeIncBasePriorityPrivilege	2100	wmic.exe
Token: SeCreatePagefilePrivilege	2100	wmic.exe
Token: SeBackupPrivilege	2100	wmic.exe
Token: SeRestorePrivilege	2100	wmic.exe
Token: SeShutdownPrivilege	2100	wmic.exe
Token: SeDebugPrivilege	2100	wmic.exe
Token: SeSystemEnvironmentPrivilege	2100	wmic.exe
Token: SeRemoteShutdownPrivilege	2100	wmic.exe
Token: SeUndockPrivilege	2100	wmic.exe
Token: SeManageVolumePrivilege	2100	wmic.exe
Token: 33	2100	wmic.exe
Token: 34	2100	wmic.exe
Token: 35	2100	wmic.exe
Token: SeDebugPrivilege	2608	powershell.exe
Token: SeDebugPrivilege	2892	powershell.exe
Token: SeDebugPrivilege	2652	powershell.exe
Token: SeDebugPrivilege	2912	powershell.exe
Token: SeIncreaseQuotaPrivilege	1320	wmic.exe
Token: SeSecurityPrivilege	1320	wmic.exe
Token: SeTakeOwnershipPrivilege	1320	wmic.exe
Token: SeLoadDriverPrivilege	1320	wmic.exe
Token: SeSystemProfilePrivilege	1320	wmic.exe
Token: SeSystemtimePrivilege	1320	wmic.exe
Token: SeProfSingleProcessPrivilege	1320	wmic.exe
Token: SeIncBasePriorityPrivilege	1320	wmic.exe
Token: SeCreatePagefilePrivilege	1320	wmic.exe
Token: SeBackupPrivilege	1320	wmic.exe
Token: SeRestorePrivilege	1320	wmic.exe
Token: SeShutdownPrivilege	1320	wmic.exe
Token: SeDebugPrivilege	1320	wmic.exe
Token: SeSystemEnvironmentPrivilege	1320	wmic.exe
Token: SeRemoteShutdownPrivilege	1320	wmic.exe
Token: SeUndockPrivilege	1320	wmic.exe
Token: SeManageVolumePrivilege	1320	wmic.exe
Token: 33	1320	wmic.exe
Token: 34	1320	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2376 wrote to memory of 2100	2376	Fizzy Loader.exe	30
PID 2376 wrote to memory of 2100	2376	Fizzy Loader.exe	30
PID 2376 wrote to memory of 2100	2376	Fizzy Loader.exe	30
PID 2376 wrote to memory of 2752	2376	Fizzy Loader.exe	33
PID 2376 wrote to memory of 2752	2376	Fizzy Loader.exe	33
PID 2376 wrote to memory of 2752	2376	Fizzy Loader.exe	33
PID 2376 wrote to memory of 2608	2376	Fizzy Loader.exe	35
PID 2376 wrote to memory of 2608	2376	Fizzy Loader.exe	35
PID 2376 wrote to memory of 2608	2376	Fizzy Loader.exe	35
PID 2376 wrote to memory of 2892	2376	Fizzy Loader.exe	37
PID 2376 wrote to memory of 2892	2376	Fizzy Loader.exe	37
PID 2376 wrote to memory of 2892	2376	Fizzy Loader.exe	37
PID 2376 wrote to memory of 2652	2376	Fizzy Loader.exe	39
PID 2376 wrote to memory of 2652	2376	Fizzy Loader.exe	39
PID 2376 wrote to memory of 2652	2376	Fizzy Loader.exe	39
PID 2376 wrote to memory of 2912	2376	Fizzy Loader.exe	41
PID 2376 wrote to memory of 2912	2376	Fizzy Loader.exe	41
PID 2376 wrote to memory of 2912	2376	Fizzy Loader.exe	41
PID 2376 wrote to memory of 1320	2376	Fizzy Loader.exe	43
PID 2376 wrote to memory of 1320	2376	Fizzy Loader.exe	43
PID 2376 wrote to memory of 1320	2376	Fizzy Loader.exe	43
PID 2376 wrote to memory of 3016	2376	Fizzy Loader.exe	45
PID 2376 wrote to memory of 3016	2376	Fizzy Loader.exe	45
PID 2376 wrote to memory of 3016	2376	Fizzy Loader.exe	45
PID 2376 wrote to memory of 1932	2376	Fizzy Loader.exe	47
PID 2376 wrote to memory of 1932	2376	Fizzy Loader.exe	47
PID 2376 wrote to memory of 1932	2376	Fizzy Loader.exe	47
PID 2376 wrote to memory of 1420	2376	Fizzy Loader.exe	49
PID 2376 wrote to memory of 1420	2376	Fizzy Loader.exe	49
PID 2376 wrote to memory of 1420	2376	Fizzy Loader.exe	49
PID 2376 wrote to memory of 2252	2376	Fizzy Loader.exe	51
PID 2376 wrote to memory of 2252	2376	Fizzy Loader.exe	51
PID 2376 wrote to memory of 2252	2376	Fizzy Loader.exe	51
PID 2376 wrote to memory of 572	2376	Fizzy Loader.exe	53
PID 2376 wrote to memory of 572	2376	Fizzy Loader.exe	53
PID 2376 wrote to memory of 572	2376	Fizzy Loader.exe	53
PID 572 wrote to memory of 2564	572	cmd.exe	55
PID 572 wrote to memory of 2564	572	cmd.exe	55
PID 572 wrote to memory of 2564	572	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2752	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Fizzy Loader.exe
"C:\Users\Admin\AppData\Local\Temp\Fizzy Loader.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2376
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2100
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Fizzy Loader.exe"
  2⤵
  - Views/modifies file attributes
  PID:2752
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Fizzy Loader.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2608
- 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:2892
- 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:2652
- 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:2912
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1320
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:3016
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1932
- 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:1420
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2252
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Fizzy Loader.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:572
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2564

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
f53fc681ce060fab1f82600f57f50b5c

SHA1
1864738457fd3946c1ec18e6959a57330fd96291

SHA256
f749738b826cf0f699f5c5d0e31b16b87f2fed8e91ad1872bf197a1a6094ffe0

SHA512
0db3b3757336c65351f10ff0eddeb5e6964668d256eaf5bcecd6f1c40a9ddee41cdb70d7fcdfa9c4f119f4cf37157248540c6a76418a9430a2389df14e9bc416

Download Submit
memory/1420-43-0x0000000001FF0000-0x0000000001FF8000-memory.dmp

Filesize
32KB

Download
memory/2376-0-0x000007FEF5063000-0x000007FEF5064000-memory.dmp

Filesize
4KB

Download
memory/2376-1-0x0000000000A80000-0x0000000000AC0000-memory.dmp

Filesize
256KB

Download
memory/2376-2-0x000007FEF5060000-0x000007FEF5A4C000-memory.dmp

Filesize
9.9MB

Download
memory/2376-47-0x000007FEF5060000-0x000007FEF5A4C000-memory.dmp

Filesize
9.9MB

Download
memory/2608-7-0x000000001B5C0000-0x000000001B8A2000-memory.dmp

Filesize
2.9MB

Download
memory/2608-8-0x0000000002790000-0x0000000002798000-memory.dmp

Filesize
32KB

Download
memory/2892-14-0x000000001B530000-0x000000001B812000-memory.dmp

Filesize
2.9MB

Download
memory/2892-15-0x0000000002790000-0x0000000002798000-memory.dmp

Filesize
32KB

Download