umbral | 46a67cdc899f61ccb6324d187d56b389f720d72beb02594fd60fdc4a8ca62ab4

Analysis

max time kernel
92s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
30-12-2024 23:41

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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
behavioral2/memory/4288-1-0x00000288DD210000-0x00000288DD250000-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
3436	powershell.exe
1600	powershell.exe
4072	powershell.exe
1052	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

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
21	discord.com
22	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
4528	cmd.exe
2036	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3128	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2036	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4288	Fizzy Loader.exe
3436	powershell.exe
3436	powershell.exe
1600	powershell.exe
1600	powershell.exe
4072	powershell.exe
4072	powershell.exe
4236	powershell.exe
4236	powershell.exe
1052	powershell.exe
1052	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4288	Fizzy Loader.exe
Token: SeIncreaseQuotaPrivilege	1116	wmic.exe
Token: SeSecurityPrivilege	1116	wmic.exe
Token: SeTakeOwnershipPrivilege	1116	wmic.exe
Token: SeLoadDriverPrivilege	1116	wmic.exe
Token: SeSystemProfilePrivilege	1116	wmic.exe
Token: SeSystemtimePrivilege	1116	wmic.exe
Token: SeProfSingleProcessPrivilege	1116	wmic.exe
Token: SeIncBasePriorityPrivilege	1116	wmic.exe
Token: SeCreatePagefilePrivilege	1116	wmic.exe
Token: SeBackupPrivilege	1116	wmic.exe
Token: SeRestorePrivilege	1116	wmic.exe
Token: SeShutdownPrivilege	1116	wmic.exe
Token: SeDebugPrivilege	1116	wmic.exe
Token: SeSystemEnvironmentPrivilege	1116	wmic.exe
Token: SeRemoteShutdownPrivilege	1116	wmic.exe
Token: SeUndockPrivilege	1116	wmic.exe
Token: SeManageVolumePrivilege	1116	wmic.exe
Token: 33	1116	wmic.exe
Token: 34	1116	wmic.exe
Token: 35	1116	wmic.exe
Token: 36	1116	wmic.exe
Token: SeIncreaseQuotaPrivilege	1116	wmic.exe
Token: SeSecurityPrivilege	1116	wmic.exe
Token: SeTakeOwnershipPrivilege	1116	wmic.exe
Token: SeLoadDriverPrivilege	1116	wmic.exe
Token: SeSystemProfilePrivilege	1116	wmic.exe
Token: SeSystemtimePrivilege	1116	wmic.exe
Token: SeProfSingleProcessPrivilege	1116	wmic.exe
Token: SeIncBasePriorityPrivilege	1116	wmic.exe
Token: SeCreatePagefilePrivilege	1116	wmic.exe
Token: SeBackupPrivilege	1116	wmic.exe
Token: SeRestorePrivilege	1116	wmic.exe
Token: SeShutdownPrivilege	1116	wmic.exe
Token: SeDebugPrivilege	1116	wmic.exe
Token: SeSystemEnvironmentPrivilege	1116	wmic.exe
Token: SeRemoteShutdownPrivilege	1116	wmic.exe
Token: SeUndockPrivilege	1116	wmic.exe
Token: SeManageVolumePrivilege	1116	wmic.exe
Token: 33	1116	wmic.exe
Token: 34	1116	wmic.exe
Token: 35	1116	wmic.exe
Token: 36	1116	wmic.exe
Token: SeDebugPrivilege	3436	powershell.exe
Token: SeDebugPrivilege	1600	powershell.exe
Token: SeDebugPrivilege	4072	powershell.exe
Token: SeDebugPrivilege	4236	powershell.exe
Token: SeIncreaseQuotaPrivilege	4576	wmic.exe
Token: SeSecurityPrivilege	4576	wmic.exe
Token: SeTakeOwnershipPrivilege	4576	wmic.exe
Token: SeLoadDriverPrivilege	4576	wmic.exe
Token: SeSystemProfilePrivilege	4576	wmic.exe
Token: SeSystemtimePrivilege	4576	wmic.exe
Token: SeProfSingleProcessPrivilege	4576	wmic.exe
Token: SeIncBasePriorityPrivilege	4576	wmic.exe
Token: SeCreatePagefilePrivilege	4576	wmic.exe
Token: SeBackupPrivilege	4576	wmic.exe
Token: SeRestorePrivilege	4576	wmic.exe
Token: SeShutdownPrivilege	4576	wmic.exe
Token: SeDebugPrivilege	4576	wmic.exe
Token: SeSystemEnvironmentPrivilege	4576	wmic.exe
Token: SeRemoteShutdownPrivilege	4576	wmic.exe
Token: SeUndockPrivilege	4576	wmic.exe
Token: SeManageVolumePrivilege	4576	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4288 wrote to memory of 1116	4288	Fizzy Loader.exe	83
PID 4288 wrote to memory of 1116	4288	Fizzy Loader.exe	83
PID 4288 wrote to memory of 1360	4288	Fizzy Loader.exe	86
PID 4288 wrote to memory of 1360	4288	Fizzy Loader.exe	86
PID 4288 wrote to memory of 3436	4288	Fizzy Loader.exe	88
PID 4288 wrote to memory of 3436	4288	Fizzy Loader.exe	88
PID 4288 wrote to memory of 1600	4288	Fizzy Loader.exe	90
PID 4288 wrote to memory of 1600	4288	Fizzy Loader.exe	90
PID 4288 wrote to memory of 4072	4288	Fizzy Loader.exe	92
PID 4288 wrote to memory of 4072	4288	Fizzy Loader.exe	92
PID 4288 wrote to memory of 4236	4288	Fizzy Loader.exe	94
PID 4288 wrote to memory of 4236	4288	Fizzy Loader.exe	94
PID 4288 wrote to memory of 4576	4288	Fizzy Loader.exe	96
PID 4288 wrote to memory of 4576	4288	Fizzy Loader.exe	96
PID 4288 wrote to memory of 564	4288	Fizzy Loader.exe	99
PID 4288 wrote to memory of 564	4288	Fizzy Loader.exe	99
PID 4288 wrote to memory of 2416	4288	Fizzy Loader.exe	101
PID 4288 wrote to memory of 2416	4288	Fizzy Loader.exe	101
PID 4288 wrote to memory of 1052	4288	Fizzy Loader.exe	103
PID 4288 wrote to memory of 1052	4288	Fizzy Loader.exe	103
PID 4288 wrote to memory of 3128	4288	Fizzy Loader.exe	105
PID 4288 wrote to memory of 3128	4288	Fizzy Loader.exe	105
PID 4288 wrote to memory of 4528	4288	Fizzy Loader.exe	107
PID 4288 wrote to memory of 4528	4288	Fizzy Loader.exe	107
PID 4528 wrote to memory of 2036	4528	cmd.exe	109
PID 4528 wrote to memory of 2036	4528	cmd.exe	109

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1360	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:4288
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1116
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Fizzy Loader.exe"
  2⤵
  - Views/modifies file attributes
  PID:1360
- 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:3436
- 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:1600
- 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:4072
- 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:4236
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4576
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:564
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2416
- 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:1052
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3128
- 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⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4528
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2036

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
6d42b6da621e8df5674e26b799c8e2aa

SHA1
ab3ce1327ea1eeedb987ec823d5e0cb146bafa48

SHA256
5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c

SHA512
53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

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

Filesize
948B

MD5
1a58f982c18490e622e00d4eb75ace5a

SHA1
60c30527b74659ecf09089a5a7c02a1df9a71b65

SHA256
4b7f800c0dea209162cc86627983993127eb20e3f8616646c41cb3ce15d9b39d

SHA512
ddab516a967783c5951717853aa5b3ef6dd5b442db50092888b2e7f3179fc68120fcde69a08d6ab280740eaadb6eadfc758c3118b52706f869e48ac1aebda480

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
5c964bb22371323b8064895892ab211e

SHA1
a23e9564b96d7a3e8b4a90abd0c7993d87e314fe

SHA256
80229da91bb7b07ea68d18e5a89a54988520c314030b252bd0e14584bbb0669f

SHA512
dd32dc25e1150fe04d0dde6677d3a555cd7c0428faf2ad071e4bb7e434c808c6c17186e55867330f78f528009b74e511644f1278815551c3e19b37532151f1c8

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_sg0uzl21.vdf.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3436-4-0x00007FFE03250000-0x00007FFE03D11000-memory.dmp

Filesize
10.8MB

Download
memory/3436-10-0x0000021CF2A10000-0x0000021CF2A32000-memory.dmp

Filesize
136KB

Download
memory/3436-15-0x00007FFE03250000-0x00007FFE03D11000-memory.dmp

Filesize
10.8MB

Download
memory/3436-18-0x00007FFE03250000-0x00007FFE03D11000-memory.dmp

Filesize
10.8MB

Download
memory/3436-3-0x00007FFE03250000-0x00007FFE03D11000-memory.dmp

Filesize
10.8MB

Download
memory/4288-34-0x00000288DEFF0000-0x00000288DF040000-memory.dmp

Filesize
320KB

Download
memory/4288-33-0x00000288F7840000-0x00000288F78B6000-memory.dmp

Filesize
472KB

Download
memory/4288-35-0x00000288DEFA0000-0x00000288DEFBE000-memory.dmp

Filesize
120KB

Download
memory/4288-1-0x00000288DD210000-0x00000288DD250000-memory.dmp

Filesize
256KB

Download
memory/4288-0-0x00007FFE03253000-0x00007FFE03255000-memory.dmp

Filesize
8KB

Download
memory/4288-73-0x00000288F78C0000-0x00000288F78D2000-memory.dmp

Filesize
72KB

Download
memory/4288-72-0x00000288DEFE0000-0x00000288DEFEA000-memory.dmp

Filesize
40KB

Download
memory/4288-2-0x00007FFE03250000-0x00007FFE03D11000-memory.dmp

Filesize
10.8MB

Download
memory/4288-89-0x00007FFE03253000-0x00007FFE03255000-memory.dmp

Filesize
8KB

Download
memory/4288-94-0x00000288F7730000-0x00000288F7832000-memory.dmp

Filesize
1.0MB

Download
memory/4288-95-0x00007FFE03250000-0x00007FFE03D11000-memory.dmp

Filesize
10.8MB

Download