umbral | dcd2165bc18a4476c887c7e62358ca63cb3d3b3425b0ee09acd362d1972a679f

Analysis

max time kernel
34s
max time network
35s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
01-01-2025 03:25

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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/2000-1-0x0000018B6D1A0000-0x0000018B6D1E0000-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
5044	powershell.exe
2080	powershell.exe
1908	powershell.exe
2688	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
20	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
224	cmd.exe
1860	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1344	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1860	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
2000	Fizzy Loader.exe
5044	powershell.exe
5044	powershell.exe
2688	powershell.exe
2688	powershell.exe
2080	powershell.exe
2080	powershell.exe
4512	powershell.exe
4512	powershell.exe
1908	powershell.exe
1908	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2000	Fizzy Loader.exe
Token: SeIncreaseQuotaPrivilege	5096	wmic.exe
Token: SeSecurityPrivilege	5096	wmic.exe
Token: SeTakeOwnershipPrivilege	5096	wmic.exe
Token: SeLoadDriverPrivilege	5096	wmic.exe
Token: SeSystemProfilePrivilege	5096	wmic.exe
Token: SeSystemtimePrivilege	5096	wmic.exe
Token: SeProfSingleProcessPrivilege	5096	wmic.exe
Token: SeIncBasePriorityPrivilege	5096	wmic.exe
Token: SeCreatePagefilePrivilege	5096	wmic.exe
Token: SeBackupPrivilege	5096	wmic.exe
Token: SeRestorePrivilege	5096	wmic.exe
Token: SeShutdownPrivilege	5096	wmic.exe
Token: SeDebugPrivilege	5096	wmic.exe
Token: SeSystemEnvironmentPrivilege	5096	wmic.exe
Token: SeRemoteShutdownPrivilege	5096	wmic.exe
Token: SeUndockPrivilege	5096	wmic.exe
Token: SeManageVolumePrivilege	5096	wmic.exe
Token: 33	5096	wmic.exe
Token: 34	5096	wmic.exe
Token: 35	5096	wmic.exe
Token: 36	5096	wmic.exe
Token: SeIncreaseQuotaPrivilege	5096	wmic.exe
Token: SeSecurityPrivilege	5096	wmic.exe
Token: SeTakeOwnershipPrivilege	5096	wmic.exe
Token: SeLoadDriverPrivilege	5096	wmic.exe
Token: SeSystemProfilePrivilege	5096	wmic.exe
Token: SeSystemtimePrivilege	5096	wmic.exe
Token: SeProfSingleProcessPrivilege	5096	wmic.exe
Token: SeIncBasePriorityPrivilege	5096	wmic.exe
Token: SeCreatePagefilePrivilege	5096	wmic.exe
Token: SeBackupPrivilege	5096	wmic.exe
Token: SeRestorePrivilege	5096	wmic.exe
Token: SeShutdownPrivilege	5096	wmic.exe
Token: SeDebugPrivilege	5096	wmic.exe
Token: SeSystemEnvironmentPrivilege	5096	wmic.exe
Token: SeRemoteShutdownPrivilege	5096	wmic.exe
Token: SeUndockPrivilege	5096	wmic.exe
Token: SeManageVolumePrivilege	5096	wmic.exe
Token: 33	5096	wmic.exe
Token: 34	5096	wmic.exe
Token: 35	5096	wmic.exe
Token: 36	5096	wmic.exe
Token: SeDebugPrivilege	5044	powershell.exe
Token: SeDebugPrivilege	2688	powershell.exe
Token: SeDebugPrivilege	2080	powershell.exe
Token: SeDebugPrivilege	4512	powershell.exe
Token: SeIncreaseQuotaPrivilege	624	wmic.exe
Token: SeSecurityPrivilege	624	wmic.exe
Token: SeTakeOwnershipPrivilege	624	wmic.exe
Token: SeLoadDriverPrivilege	624	wmic.exe
Token: SeSystemProfilePrivilege	624	wmic.exe
Token: SeSystemtimePrivilege	624	wmic.exe
Token: SeProfSingleProcessPrivilege	624	wmic.exe
Token: SeIncBasePriorityPrivilege	624	wmic.exe
Token: SeCreatePagefilePrivilege	624	wmic.exe
Token: SeBackupPrivilege	624	wmic.exe
Token: SeRestorePrivilege	624	wmic.exe
Token: SeShutdownPrivilege	624	wmic.exe
Token: SeDebugPrivilege	624	wmic.exe
Token: SeSystemEnvironmentPrivilege	624	wmic.exe
Token: SeRemoteShutdownPrivilege	624	wmic.exe
Token: SeUndockPrivilege	624	wmic.exe
Token: SeManageVolumePrivilege	624	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2000 wrote to memory of 5096	2000	Fizzy Loader.exe	82
PID 2000 wrote to memory of 5096	2000	Fizzy Loader.exe	82
PID 2000 wrote to memory of 2892	2000	Fizzy Loader.exe	85
PID 2000 wrote to memory of 2892	2000	Fizzy Loader.exe	85
PID 2000 wrote to memory of 5044	2000	Fizzy Loader.exe	87
PID 2000 wrote to memory of 5044	2000	Fizzy Loader.exe	87
PID 2000 wrote to memory of 2688	2000	Fizzy Loader.exe	89
PID 2000 wrote to memory of 2688	2000	Fizzy Loader.exe	89
PID 2000 wrote to memory of 2080	2000	Fizzy Loader.exe	91
PID 2000 wrote to memory of 2080	2000	Fizzy Loader.exe	91
PID 2000 wrote to memory of 4512	2000	Fizzy Loader.exe	93
PID 2000 wrote to memory of 4512	2000	Fizzy Loader.exe	93
PID 2000 wrote to memory of 624	2000	Fizzy Loader.exe	95
PID 2000 wrote to memory of 624	2000	Fizzy Loader.exe	95
PID 2000 wrote to memory of 4080	2000	Fizzy Loader.exe	97
PID 2000 wrote to memory of 4080	2000	Fizzy Loader.exe	97
PID 2000 wrote to memory of 552	2000	Fizzy Loader.exe	99
PID 2000 wrote to memory of 552	2000	Fizzy Loader.exe	99
PID 2000 wrote to memory of 1908	2000	Fizzy Loader.exe	101
PID 2000 wrote to memory of 1908	2000	Fizzy Loader.exe	101
PID 2000 wrote to memory of 1344	2000	Fizzy Loader.exe	103
PID 2000 wrote to memory of 1344	2000	Fizzy Loader.exe	103
PID 2000 wrote to memory of 224	2000	Fizzy Loader.exe	105
PID 2000 wrote to memory of 224	2000	Fizzy Loader.exe	105
PID 224 wrote to memory of 1860	224	cmd.exe	107
PID 224 wrote to memory of 1860	224	cmd.exe	107

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2892	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:2000
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:5096
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Fizzy Loader.exe"
  2⤵
  - Views/modifies file attributes
  PID:2892
- 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:5044
- 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:2688
- 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:2080
- 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:4512
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:624
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:4080
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:552
- 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:1908
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1344
- 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:224
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1860

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
b0dc7c3718882fe730dbbc1b681bfc49

SHA1
03a9c793855b3fc4a82d48a70841ab547cfb9943

SHA256
05b199d4f0d7025646593db4f3d2a22a44e4e64438668d34ec6a3a31afe249bb

SHA512
c927720f5387ba226136b57bce9fb7f37917478d42a466aa9b175561bb5aae6837f82b3b45a3b285460cecffd40742302ce607c58dea83b8a8704eef783c9601

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

Filesize
1KB

MD5
548dd08570d121a65e82abb7171cae1c

SHA1
1a1b5084b3a78f3acd0d811cc79dbcac121217ab

SHA256
cdf17b8532ebcebac3cfe23954a30aa32edd268d040da79c82687e4ccb044adc

SHA512
37b98b09178b51eec9599af90d027d2f1028202efc1633047e16e41f1a95610984af5620baac07db085ccfcb96942aafffad17aa1f44f63233e83869dc9f697b

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

Filesize
1KB

MD5
d8a781a8d47e148c742681deaa63ac8d

SHA1
49594c22cc6183605b96b715a0c00c1bf1bbb468

SHA256
994622f9d048bce32fd23dec62a532b965883a169722f36ce72a639e29b8303c

SHA512
f32989be9a903764c4ed3b8ab4e61a677ca4d37031200530164d192c25c269143cb127a73380ea0d88ac81f1a3a7c141d77fbd74c211c9d969bf2af9202e7fbe

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nc5vog32.avu.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2000-0-0x00007FFF15563000-0x00007FFF15565000-memory.dmp

Filesize
8KB

Download
memory/2000-95-0x00007FFF15560000-0x00007FFF16021000-memory.dmp

Filesize
10.8MB

Download
memory/2000-74-0x0000018B6EE60000-0x0000018B6EE6A000-memory.dmp

Filesize
40KB

Download
memory/2000-75-0x0000018B6F7B0000-0x0000018B6F7C2000-memory.dmp

Filesize
72KB

Download
memory/2000-2-0x00007FFF15560000-0x00007FFF16021000-memory.dmp

Filesize
10.8MB

Download
memory/2000-1-0x0000018B6D1A0000-0x0000018B6D1E0000-memory.dmp

Filesize
256KB

Download
memory/2000-34-0x0000018B6F960000-0x0000018B6F9D6000-memory.dmp

Filesize
472KB

Download
memory/2000-35-0x0000018B6F8E0000-0x0000018B6F930000-memory.dmp

Filesize
320KB

Download
memory/2000-36-0x0000018B6EE20000-0x0000018B6EE3E000-memory.dmp

Filesize
120KB

Download
memory/2688-31-0x0000024AA8B60000-0x0000024AA8D7C000-memory.dmp

Filesize
2.1MB

Download
memory/4512-71-0x0000027EA10B0000-0x0000027EA12CC000-memory.dmp

Filesize
2.1MB

Download
memory/5044-3-0x00007FFF15560000-0x00007FFF16021000-memory.dmp

Filesize
10.8MB

Download
memory/5044-18-0x00007FFF15560000-0x00007FFF16021000-memory.dmp

Filesize
10.8MB

Download
memory/5044-15-0x00007FFF15560000-0x00007FFF16021000-memory.dmp

Filesize
10.8MB

Download
memory/5044-14-0x0000021452F70000-0x0000021452F92000-memory.dmp

Filesize
136KB

Download
memory/5044-4-0x00007FFF15560000-0x00007FFF16021000-memory.dmp

Filesize
10.8MB

Download