umbral | e8cba28d07b08b7267d7430bb1beea11634d76d549f2056e362b14871f645c66

Analysis

max time kernel
104s
max time network
115s
platform
windows10-2004_x64
resource
win10v2004-20250410-en
resource tags

arch:x64arch:x86image:win10v2004-20250410-enlocale:en-usos:windows10-2004-x64system
submitted
11/04/2025, 18:34

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General

Target

Nemezida.exe
Size

231KB
MD5

18bc878dd9de70a6e96dc283aaa986bd
SHA1

cfaeee2d1e1f02690568ffa22d1be955cc318808
SHA256

e8cba28d07b08b7267d7430bb1beea11634d76d549f2056e362b14871f645c66
SHA512

af3040a2e2da1330b6821bb0cc59962a60095d1c7af5854e9c409225ce032946dfaee6a3bd35cfc3b584315398801e5ccc0601b3e0fdb49216f6e35f28888c23
SSDEEP

6144:xloZM+rIkd8g+EtXHkv/iD4cZO/GELnsGd42X3WfEb8e1mpi:DoZtL+EP8cZO/GELnsGd42X3W8b

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/5160-1-0x00000215ED9B0000-0x00000215ED9F0000-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
4288	powershell.exe
1796	powershell.exe
4716	powershell.exe
4076	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	Nemezida.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
19	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
4	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
5024	cmd.exe
1380	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
5984	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1380	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
5160	Nemezida.exe
4288	powershell.exe
4288	powershell.exe
1796	powershell.exe
1796	powershell.exe
4716	powershell.exe
4716	powershell.exe
692	powershell.exe
692	powershell.exe
4076	powershell.exe
4076	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	5160	Nemezida.exe
Token: SeIncreaseQuotaPrivilege	1052	wmic.exe
Token: SeSecurityPrivilege	1052	wmic.exe
Token: SeTakeOwnershipPrivilege	1052	wmic.exe
Token: SeLoadDriverPrivilege	1052	wmic.exe
Token: SeSystemProfilePrivilege	1052	wmic.exe
Token: SeSystemtimePrivilege	1052	wmic.exe
Token: SeProfSingleProcessPrivilege	1052	wmic.exe
Token: SeIncBasePriorityPrivilege	1052	wmic.exe
Token: SeCreatePagefilePrivilege	1052	wmic.exe
Token: SeBackupPrivilege	1052	wmic.exe
Token: SeRestorePrivilege	1052	wmic.exe
Token: SeShutdownPrivilege	1052	wmic.exe
Token: SeDebugPrivilege	1052	wmic.exe
Token: SeSystemEnvironmentPrivilege	1052	wmic.exe
Token: SeRemoteShutdownPrivilege	1052	wmic.exe
Token: SeUndockPrivilege	1052	wmic.exe
Token: SeManageVolumePrivilege	1052	wmic.exe
Token: 33	1052	wmic.exe
Token: 34	1052	wmic.exe
Token: 35	1052	wmic.exe
Token: 36	1052	wmic.exe
Token: SeIncreaseQuotaPrivilege	1052	wmic.exe
Token: SeSecurityPrivilege	1052	wmic.exe
Token: SeTakeOwnershipPrivilege	1052	wmic.exe
Token: SeLoadDriverPrivilege	1052	wmic.exe
Token: SeSystemProfilePrivilege	1052	wmic.exe
Token: SeSystemtimePrivilege	1052	wmic.exe
Token: SeProfSingleProcessPrivilege	1052	wmic.exe
Token: SeIncBasePriorityPrivilege	1052	wmic.exe
Token: SeCreatePagefilePrivilege	1052	wmic.exe
Token: SeBackupPrivilege	1052	wmic.exe
Token: SeRestorePrivilege	1052	wmic.exe
Token: SeShutdownPrivilege	1052	wmic.exe
Token: SeDebugPrivilege	1052	wmic.exe
Token: SeSystemEnvironmentPrivilege	1052	wmic.exe
Token: SeRemoteShutdownPrivilege	1052	wmic.exe
Token: SeUndockPrivilege	1052	wmic.exe
Token: SeManageVolumePrivilege	1052	wmic.exe
Token: 33	1052	wmic.exe
Token: 34	1052	wmic.exe
Token: 35	1052	wmic.exe
Token: 36	1052	wmic.exe
Token: SeDebugPrivilege	4288	powershell.exe
Token: SeDebugPrivilege	1796	powershell.exe
Token: SeDebugPrivilege	4716	powershell.exe
Token: SeDebugPrivilege	692	powershell.exe
Token: SeIncreaseQuotaPrivilege	1528	wmic.exe
Token: SeSecurityPrivilege	1528	wmic.exe
Token: SeTakeOwnershipPrivilege	1528	wmic.exe
Token: SeLoadDriverPrivilege	1528	wmic.exe
Token: SeSystemProfilePrivilege	1528	wmic.exe
Token: SeSystemtimePrivilege	1528	wmic.exe
Token: SeProfSingleProcessPrivilege	1528	wmic.exe
Token: SeIncBasePriorityPrivilege	1528	wmic.exe
Token: SeCreatePagefilePrivilege	1528	wmic.exe
Token: SeBackupPrivilege	1528	wmic.exe
Token: SeRestorePrivilege	1528	wmic.exe
Token: SeShutdownPrivilege	1528	wmic.exe
Token: SeDebugPrivilege	1528	wmic.exe
Token: SeSystemEnvironmentPrivilege	1528	wmic.exe
Token: SeRemoteShutdownPrivilege	1528	wmic.exe
Token: SeUndockPrivilege	1528	wmic.exe
Token: SeManageVolumePrivilege	1528	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 5160 wrote to memory of 1052	5160	Nemezida.exe	87
PID 5160 wrote to memory of 1052	5160	Nemezida.exe	87
PID 5160 wrote to memory of 3656	5160	Nemezida.exe	90
PID 5160 wrote to memory of 3656	5160	Nemezida.exe	90
PID 5160 wrote to memory of 4288	5160	Nemezida.exe	92
PID 5160 wrote to memory of 4288	5160	Nemezida.exe	92
PID 5160 wrote to memory of 1796	5160	Nemezida.exe	94
PID 5160 wrote to memory of 1796	5160	Nemezida.exe	94
PID 5160 wrote to memory of 4716	5160	Nemezida.exe	96
PID 5160 wrote to memory of 4716	5160	Nemezida.exe	96
PID 5160 wrote to memory of 692	5160	Nemezida.exe	98
PID 5160 wrote to memory of 692	5160	Nemezida.exe	98
PID 5160 wrote to memory of 1528	5160	Nemezida.exe	100
PID 5160 wrote to memory of 1528	5160	Nemezida.exe	100
PID 5160 wrote to memory of 5944	5160	Nemezida.exe	102
PID 5160 wrote to memory of 5944	5160	Nemezida.exe	102
PID 5160 wrote to memory of 908	5160	Nemezida.exe	104
PID 5160 wrote to memory of 908	5160	Nemezida.exe	104
PID 5160 wrote to memory of 4076	5160	Nemezida.exe	106
PID 5160 wrote to memory of 4076	5160	Nemezida.exe	106
PID 5160 wrote to memory of 5984	5160	Nemezida.exe	108
PID 5160 wrote to memory of 5984	5160	Nemezida.exe	108
PID 5160 wrote to memory of 5024	5160	Nemezida.exe	110
PID 5160 wrote to memory of 5024	5160	Nemezida.exe	110
PID 5024 wrote to memory of 1380	5024	cmd.exe	112
PID 5024 wrote to memory of 1380	5024	cmd.exe	112

Views/modifies file attributes 1 TTPs 1 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
3656	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Nemezida.exe
"C:\Users\Admin\AppData\Local\Temp\Nemezida.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5160
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1052
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Nemezida.exe"
  2⤵
  - Views/modifies file attributes
  PID:3656
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Nemezida.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4288
- 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:1796
- 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:4716
- 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:692
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1528
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:5944
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:908
- 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:4076
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:5984
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Nemezida.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:5024
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1380

Network

MITRE ATT&CK Enterprise v16

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\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
87d9fe9e5ee685ff2b66e5396fcdcb99

SHA1
0ac74edba86591b97d1a7531c3d2e659f0843b7f

SHA256
f84df996802a7b65b0a58ecd1960f157bdc82f817bae81409eb4184e438ed9b8

SHA512
ce602ffb6822849af961afc13b972d0d344bbfaa50c5fe372cf475f424a9227f788ea64a1dfa9b96d8e01cfa2b7f0f9e695ea001ea37a6c7c235c86931d1cf3e

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

Filesize
948B

MD5
c9b6705519e1eef08f86c4ba5f4286f3

SHA1
6c6b179e452ecee2673a1d4fe128f1c06f70577f

SHA256
0f9cad44a79126871580e19b01dc3f880c5173b1faaf8b9018d5d1f829714705

SHA512
6d8f85a7a8b0b124530f36a157cd0441b5c1eacdc35e274af9fbf0569d03d1d5e468651a5b2425f0215c282ecfa7b1ffeaeeaf18612822f00bd14306d30640c7

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

Filesize
1KB

MD5
4950bb37b35849b09a86bc7c01c8952a

SHA1
f9650f41d105d3affa7b19d58ab336a92aab4793

SHA256
5d139a221345fe53f28d2a772c8e4c8e988925b6fc228c81baa98f824a44c67c

SHA512
5b39b845d6d53acd9a20fa1e3e081f7a4c5bbea4641ed53e6d1df8fb245a57e7a659cbdbdfe41ce642b6b2a7ff98b3dd3c9a5bcea7d226cead546d097f361a40

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

Filesize
1KB

MD5
c43ff6f1cbbc9c6f55fe8fcf90988c9d

SHA1
8645c645f38803c13fca99c4be7ec22c054382d2

SHA256
be9652b49e5d995e96ab84c5c118ba1699288009cc8d2fde156407382f7f694b

SHA512
37ba3d25f2d342511174e73e3506b6111f069f27374a4ba9a7c360ab720895630c07c598d5a686ebde4f2cd03ad77b2ed0a0a27fd4cd544a6a850935eb8f2242

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_eruo5hmv.zvz.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4288-8-0x000001BA6CA80000-0x000001BA6CAA2000-memory.dmp

Filesize
136KB

Download
memory/4288-13-0x00007FFF40470000-0x00007FFF40F31000-memory.dmp

Filesize
10.8MB

Download
memory/4288-14-0x00007FFF40470000-0x00007FFF40F31000-memory.dmp

Filesize
10.8MB

Download
memory/4288-15-0x00007FFF40470000-0x00007FFF40F31000-memory.dmp

Filesize
10.8MB

Download
memory/4288-17-0x00007FFF40470000-0x00007FFF40F31000-memory.dmp

Filesize
10.8MB

Download
memory/5160-31-0x00000215F00F0000-0x00000215F0166000-memory.dmp

Filesize
472KB

Download
memory/5160-32-0x00000215F0170000-0x00000215F01C0000-memory.dmp

Filesize
320KB

Download
memory/5160-33-0x00000215F00A0000-0x00000215F00BE000-memory.dmp

Filesize
120KB

Download
memory/5160-0-0x00007FFF40473000-0x00007FFF40475000-memory.dmp

Filesize
8KB

Download
memory/5160-2-0x00007FFF40470000-0x00007FFF40F31000-memory.dmp

Filesize
10.8MB

Download
memory/5160-70-0x00000215F00C0000-0x00000215F00D2000-memory.dmp

Filesize
72KB

Download
memory/5160-69-0x00000215F0070000-0x00000215F007A000-memory.dmp

Filesize
40KB

Download
memory/5160-1-0x00000215ED9B0000-0x00000215ED9F0000-memory.dmp

Filesize
256KB

Download
memory/5160-85-0x00007FFF40473000-0x00007FFF40475000-memory.dmp

Filesize
8KB

Download
memory/5160-86-0x00007FFF40470000-0x00007FFF40F31000-memory.dmp

Filesize
10.8MB

Download
memory/5160-90-0x00007FFF40470000-0x00007FFF40F31000-memory.dmp

Filesize
10.8MB

Download