umbral | 46a67cdc899f61ccb6324d187d56b389f720d72beb02594fd60fdc4a8ca62ab4

Analysis

max time kernel
94s
max time network
141s
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 23:49

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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
behavioral2/memory/3012-1-0x0000015951E40000-0x0000015951E80000-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
3620	powershell.exe
1952	powershell.exe
2436	powershell.exe
1984	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
5	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
4728	cmd.exe
2760	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3792	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2760	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
3012	Fizzy Loader.exe
1984	powershell.exe
1984	powershell.exe
3620	powershell.exe
3620	powershell.exe
1952	powershell.exe
1952	powershell.exe
1912	powershell.exe
1912	powershell.exe
2436	powershell.exe
2436	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3012	Fizzy Loader.exe
Token: SeIncreaseQuotaPrivilege	4164	wmic.exe
Token: SeSecurityPrivilege	4164	wmic.exe
Token: SeTakeOwnershipPrivilege	4164	wmic.exe
Token: SeLoadDriverPrivilege	4164	wmic.exe
Token: SeSystemProfilePrivilege	4164	wmic.exe
Token: SeSystemtimePrivilege	4164	wmic.exe
Token: SeProfSingleProcessPrivilege	4164	wmic.exe
Token: SeIncBasePriorityPrivilege	4164	wmic.exe
Token: SeCreatePagefilePrivilege	4164	wmic.exe
Token: SeBackupPrivilege	4164	wmic.exe
Token: SeRestorePrivilege	4164	wmic.exe
Token: SeShutdownPrivilege	4164	wmic.exe
Token: SeDebugPrivilege	4164	wmic.exe
Token: SeSystemEnvironmentPrivilege	4164	wmic.exe
Token: SeRemoteShutdownPrivilege	4164	wmic.exe
Token: SeUndockPrivilege	4164	wmic.exe
Token: SeManageVolumePrivilege	4164	wmic.exe
Token: 33	4164	wmic.exe
Token: 34	4164	wmic.exe
Token: 35	4164	wmic.exe
Token: 36	4164	wmic.exe
Token: SeIncreaseQuotaPrivilege	4164	wmic.exe
Token: SeSecurityPrivilege	4164	wmic.exe
Token: SeTakeOwnershipPrivilege	4164	wmic.exe
Token: SeLoadDriverPrivilege	4164	wmic.exe
Token: SeSystemProfilePrivilege	4164	wmic.exe
Token: SeSystemtimePrivilege	4164	wmic.exe
Token: SeProfSingleProcessPrivilege	4164	wmic.exe
Token: SeIncBasePriorityPrivilege	4164	wmic.exe
Token: SeCreatePagefilePrivilege	4164	wmic.exe
Token: SeBackupPrivilege	4164	wmic.exe
Token: SeRestorePrivilege	4164	wmic.exe
Token: SeShutdownPrivilege	4164	wmic.exe
Token: SeDebugPrivilege	4164	wmic.exe
Token: SeSystemEnvironmentPrivilege	4164	wmic.exe
Token: SeRemoteShutdownPrivilege	4164	wmic.exe
Token: SeUndockPrivilege	4164	wmic.exe
Token: SeManageVolumePrivilege	4164	wmic.exe
Token: 33	4164	wmic.exe
Token: 34	4164	wmic.exe
Token: 35	4164	wmic.exe
Token: 36	4164	wmic.exe
Token: SeDebugPrivilege	1984	powershell.exe
Token: SeDebugPrivilege	3620	powershell.exe
Token: SeDebugPrivilege	1952	powershell.exe
Token: SeDebugPrivilege	1912	powershell.exe
Token: SeIncreaseQuotaPrivilege	3944	wmic.exe
Token: SeSecurityPrivilege	3944	wmic.exe
Token: SeTakeOwnershipPrivilege	3944	wmic.exe
Token: SeLoadDriverPrivilege	3944	wmic.exe
Token: SeSystemProfilePrivilege	3944	wmic.exe
Token: SeSystemtimePrivilege	3944	wmic.exe
Token: SeProfSingleProcessPrivilege	3944	wmic.exe
Token: SeIncBasePriorityPrivilege	3944	wmic.exe
Token: SeCreatePagefilePrivilege	3944	wmic.exe
Token: SeBackupPrivilege	3944	wmic.exe
Token: SeRestorePrivilege	3944	wmic.exe
Token: SeShutdownPrivilege	3944	wmic.exe
Token: SeDebugPrivilege	3944	wmic.exe
Token: SeSystemEnvironmentPrivilege	3944	wmic.exe
Token: SeRemoteShutdownPrivilege	3944	wmic.exe
Token: SeUndockPrivilege	3944	wmic.exe
Token: SeManageVolumePrivilege	3944	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3012 wrote to memory of 4164	3012	Fizzy Loader.exe	84
PID 3012 wrote to memory of 4164	3012	Fizzy Loader.exe	84
PID 3012 wrote to memory of 1460	3012	Fizzy Loader.exe	87
PID 3012 wrote to memory of 1460	3012	Fizzy Loader.exe	87
PID 3012 wrote to memory of 1984	3012	Fizzy Loader.exe	89
PID 3012 wrote to memory of 1984	3012	Fizzy Loader.exe	89
PID 3012 wrote to memory of 3620	3012	Fizzy Loader.exe	91
PID 3012 wrote to memory of 3620	3012	Fizzy Loader.exe	91
PID 3012 wrote to memory of 1952	3012	Fizzy Loader.exe	93
PID 3012 wrote to memory of 1952	3012	Fizzy Loader.exe	93
PID 3012 wrote to memory of 1912	3012	Fizzy Loader.exe	95
PID 3012 wrote to memory of 1912	3012	Fizzy Loader.exe	95
PID 3012 wrote to memory of 3944	3012	Fizzy Loader.exe	97
PID 3012 wrote to memory of 3944	3012	Fizzy Loader.exe	97
PID 3012 wrote to memory of 1428	3012	Fizzy Loader.exe	99
PID 3012 wrote to memory of 1428	3012	Fizzy Loader.exe	99
PID 3012 wrote to memory of 4284	3012	Fizzy Loader.exe	101
PID 3012 wrote to memory of 4284	3012	Fizzy Loader.exe	101
PID 3012 wrote to memory of 2436	3012	Fizzy Loader.exe	103
PID 3012 wrote to memory of 2436	3012	Fizzy Loader.exe	103
PID 3012 wrote to memory of 3792	3012	Fizzy Loader.exe	105
PID 3012 wrote to memory of 3792	3012	Fizzy Loader.exe	105
PID 3012 wrote to memory of 4728	3012	Fizzy Loader.exe	107
PID 3012 wrote to memory of 4728	3012	Fizzy Loader.exe	107
PID 4728 wrote to memory of 2760	4728	cmd.exe	109
PID 4728 wrote to memory of 2760	4728	cmd.exe	109

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1460	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:3012
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4164
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Fizzy Loader.exe"
  2⤵
  - Views/modifies file attributes
  PID:1460
- 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:1984
- 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:3620
- 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:1952
- 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:1912
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3944
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1428
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4284
- 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:2436
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3792
- 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:4728
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2760

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
6d3e9c29fe44e90aae6ed30ccf799ca8

SHA1
c7974ef72264bbdf13a2793ccf1aed11bc565dce

SHA256
2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

SHA512
60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

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

Filesize
948B

MD5
17d8127be94d3c1b6fcc9a4ed585003e

SHA1
789874fcc7c778c723f3e89822d8cc8750c6c4c8

SHA256
ea357ad1f95863b3618d31e5b0f90495331f64de2b784d9e185b48668c937a7b

SHA512
bb18b6d07d82227f5cfbe3eb460df79ec892c560ad2964dcd4782aa26336ae15059843bf46a739bdd4a4daa58057f99102531a756a1cf434ce6449b3cd35a98e

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
a1a19168f0afd34f79e67d851d53ae1f

SHA1
86d4e2e64cfbde459df63c600cb6ae3ed4360298

SHA256
ecb0657169e80cbfdf4eb668380e11234a4ab8a80a2ae5bee8f582dc1726fba0

SHA512
75bff329f636b4fe84c4bc692288f565400d9d7aa1bd75f5ead4ee8e648ccbf748341b5527514fb4f7e5545aa6fb2bd5865b58bc1c7bf08daf22a9cb902af116

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_pdtdenfx.ox5.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1984-14-0x0000027C387A0000-0x0000027C387C2000-memory.dmp

Filesize
136KB

Download
memory/1984-15-0x00007FFD37FB0000-0x00007FFD38A71000-memory.dmp

Filesize
10.8MB

Download
memory/1984-18-0x0000027C38450000-0x0000027C3866C000-memory.dmp

Filesize
2.1MB

Download
memory/1984-19-0x00007FFD37FB0000-0x00007FFD38A71000-memory.dmp

Filesize
10.8MB

Download
memory/1984-3-0x00007FFD37FB0000-0x00007FFD38A71000-memory.dmp

Filesize
10.8MB

Download
memory/1984-4-0x00007FFD37FB0000-0x00007FFD38A71000-memory.dmp

Filesize
10.8MB

Download
memory/3012-36-0x000001596C660000-0x000001596C6B0000-memory.dmp

Filesize
320KB

Download
memory/3012-35-0x000001596C570000-0x000001596C5E6000-memory.dmp

Filesize
472KB

Download
memory/3012-37-0x000001596C640000-0x000001596C65E000-memory.dmp

Filesize
120KB

Download
memory/3012-0-0x00007FFD37FB3000-0x00007FFD37FB5000-memory.dmp

Filesize
8KB

Download
memory/3012-2-0x00007FFD37FB0000-0x00007FFD38A71000-memory.dmp

Filesize
10.8MB

Download
memory/3012-75-0x000001596C540000-0x000001596C552000-memory.dmp

Filesize
72KB

Download
memory/3012-74-0x000001596C510000-0x000001596C51A000-memory.dmp

Filesize
40KB

Download
memory/3012-1-0x0000015951E40000-0x0000015951E80000-memory.dmp

Filesize
256KB

Download
memory/3012-95-0x00007FFD37FB0000-0x00007FFD38A71000-memory.dmp

Filesize
10.8MB

Download
memory/3620-32-0x000002195B5F0000-0x000002195B80C000-memory.dmp

Filesize
2.1MB

Download