umbral | 3f3f40a638516bc45b945327b7a0c7e38eff9856a8339ad3ce87a518fc7ef841

Analysis

max time kernel
31s
max time network
31s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
08/01/2025, 07:40

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General

Target

NursultanCrack (1).exe
Size

495KB
MD5

cb249dd007048cc05e604f34918ed5ea
SHA1

78e9fceb07dd0d42e599ecb0629bf37f0461a1b0
SHA256

3904bfb037ab43097536ee9d9797e6cd8d4282390af91aa554f92d0f6885bd12
SHA512

1a2fe75f87c6386ee11d1865d7f15704f68a3756cfe4015b5c882d012ac48710fb877dfeb9dd1ac7a31e5225aeb0fdc027fcc37de360b37955c64b9de457f154
SSDEEP

12288:doZ1tlRk83MlUpRhgMS1Nmdzus9x41Ib7idvMk0SVMl5tYyQ:G5r3PRCMS1Nmdzus9x416SMk0GMl5tYh

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/1848-1-0x000001DFE19D0000-0x000001DFE1A52000-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
3848	powershell.exe
2436	powershell.exe
3120	powershell.exe
960	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	NursultanCrack (1).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

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
12	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
640	PING.EXE
3188	cmd.exe

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2812	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
640	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
1848	NursultanCrack (1).exe
3848	powershell.exe
3848	powershell.exe
960	powershell.exe
960	powershell.exe
2436	powershell.exe
2436	powershell.exe
3196	powershell.exe
3196	powershell.exe
3120	powershell.exe
3120	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1848	NursultanCrack (1).exe
Token: SeIncreaseQuotaPrivilege	3192	wmic.exe
Token: SeSecurityPrivilege	3192	wmic.exe
Token: SeTakeOwnershipPrivilege	3192	wmic.exe
Token: SeLoadDriverPrivilege	3192	wmic.exe
Token: SeSystemProfilePrivilege	3192	wmic.exe
Token: SeSystemtimePrivilege	3192	wmic.exe
Token: SeProfSingleProcessPrivilege	3192	wmic.exe
Token: SeIncBasePriorityPrivilege	3192	wmic.exe
Token: SeCreatePagefilePrivilege	3192	wmic.exe
Token: SeBackupPrivilege	3192	wmic.exe
Token: SeRestorePrivilege	3192	wmic.exe
Token: SeShutdownPrivilege	3192	wmic.exe
Token: SeDebugPrivilege	3192	wmic.exe
Token: SeSystemEnvironmentPrivilege	3192	wmic.exe
Token: SeRemoteShutdownPrivilege	3192	wmic.exe
Token: SeUndockPrivilege	3192	wmic.exe
Token: SeManageVolumePrivilege	3192	wmic.exe
Token: 33	3192	wmic.exe
Token: 34	3192	wmic.exe
Token: 35	3192	wmic.exe
Token: 36	3192	wmic.exe
Token: SeIncreaseQuotaPrivilege	3192	wmic.exe
Token: SeSecurityPrivilege	3192	wmic.exe
Token: SeTakeOwnershipPrivilege	3192	wmic.exe
Token: SeLoadDriverPrivilege	3192	wmic.exe
Token: SeSystemProfilePrivilege	3192	wmic.exe
Token: SeSystemtimePrivilege	3192	wmic.exe
Token: SeProfSingleProcessPrivilege	3192	wmic.exe
Token: SeIncBasePriorityPrivilege	3192	wmic.exe
Token: SeCreatePagefilePrivilege	3192	wmic.exe
Token: SeBackupPrivilege	3192	wmic.exe
Token: SeRestorePrivilege	3192	wmic.exe
Token: SeShutdownPrivilege	3192	wmic.exe
Token: SeDebugPrivilege	3192	wmic.exe
Token: SeSystemEnvironmentPrivilege	3192	wmic.exe
Token: SeRemoteShutdownPrivilege	3192	wmic.exe
Token: SeUndockPrivilege	3192	wmic.exe
Token: SeManageVolumePrivilege	3192	wmic.exe
Token: 33	3192	wmic.exe
Token: 34	3192	wmic.exe
Token: 35	3192	wmic.exe
Token: 36	3192	wmic.exe
Token: SeDebugPrivilege	3848	powershell.exe
Token: SeDebugPrivilege	960	powershell.exe
Token: SeDebugPrivilege	2436	powershell.exe
Token: SeDebugPrivilege	3196	powershell.exe
Token: SeIncreaseQuotaPrivilege	4312	wmic.exe
Token: SeSecurityPrivilege	4312	wmic.exe
Token: SeTakeOwnershipPrivilege	4312	wmic.exe
Token: SeLoadDriverPrivilege	4312	wmic.exe
Token: SeSystemProfilePrivilege	4312	wmic.exe
Token: SeSystemtimePrivilege	4312	wmic.exe
Token: SeProfSingleProcessPrivilege	4312	wmic.exe
Token: SeIncBasePriorityPrivilege	4312	wmic.exe
Token: SeCreatePagefilePrivilege	4312	wmic.exe
Token: SeBackupPrivilege	4312	wmic.exe
Token: SeRestorePrivilege	4312	wmic.exe
Token: SeShutdownPrivilege	4312	wmic.exe
Token: SeDebugPrivilege	4312	wmic.exe
Token: SeSystemEnvironmentPrivilege	4312	wmic.exe
Token: SeRemoteShutdownPrivilege	4312	wmic.exe
Token: SeUndockPrivilege	4312	wmic.exe
Token: SeManageVolumePrivilege	4312	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1848 wrote to memory of 3192	1848	NursultanCrack (1).exe	84
PID 1848 wrote to memory of 3192	1848	NursultanCrack (1).exe	84
PID 1848 wrote to memory of 1860	1848	NursultanCrack (1).exe	87
PID 1848 wrote to memory of 1860	1848	NursultanCrack (1).exe	87
PID 1848 wrote to memory of 3848	1848	NursultanCrack (1).exe	89
PID 1848 wrote to memory of 3848	1848	NursultanCrack (1).exe	89
PID 1848 wrote to memory of 960	1848	NursultanCrack (1).exe	91
PID 1848 wrote to memory of 960	1848	NursultanCrack (1).exe	91
PID 1848 wrote to memory of 2436	1848	NursultanCrack (1).exe	93
PID 1848 wrote to memory of 2436	1848	NursultanCrack (1).exe	93
PID 1848 wrote to memory of 3196	1848	NursultanCrack (1).exe	95
PID 1848 wrote to memory of 3196	1848	NursultanCrack (1).exe	95
PID 1848 wrote to memory of 4312	1848	NursultanCrack (1).exe	97
PID 1848 wrote to memory of 4312	1848	NursultanCrack (1).exe	97
PID 1848 wrote to memory of 2272	1848	NursultanCrack (1).exe	100
PID 1848 wrote to memory of 2272	1848	NursultanCrack (1).exe	100
PID 1848 wrote to memory of 4068	1848	NursultanCrack (1).exe	102
PID 1848 wrote to memory of 4068	1848	NursultanCrack (1).exe	102
PID 1848 wrote to memory of 3120	1848	NursultanCrack (1).exe	104
PID 1848 wrote to memory of 3120	1848	NursultanCrack (1).exe	104
PID 1848 wrote to memory of 2812	1848	NursultanCrack (1).exe	106
PID 1848 wrote to memory of 2812	1848	NursultanCrack (1).exe	106
PID 1848 wrote to memory of 3188	1848	NursultanCrack (1).exe	108
PID 1848 wrote to memory of 3188	1848	NursultanCrack (1).exe	108
PID 3188 wrote to memory of 640	3188	cmd.exe	110
PID 3188 wrote to memory of 640	3188	cmd.exe	110

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1860	attrib.exe

C:\Users\Admin\AppData\Local\Temp\NursultanCrack (1).exe
"C:\Users\Admin\AppData\Local\Temp\NursultanCrack (1).exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1848
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3192
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\NursultanCrack (1).exe"
  2⤵
  - Views/modifies file attributes
  PID:1860
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\NursultanCrack (1).exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3848
- 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:960
- 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:2436
- 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:3196
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4312
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2272
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4068
- 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:3120
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2812
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\NursultanCrack (1).exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3188
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:640

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

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
2e907f77659a6601fcc408274894da2e

SHA1
9f5b72abef1cd7145bf37547cdb1b9254b4efe9d

SHA256
385da35673330e21ac02545220552fe301fe54dedefbdafc097ac4342a295233

SHA512
34fa0fff24f6550f55f828541aaefe5d75c86f8f0842d54b50065e9746f9662bb7209c74c9a9571540b9855bb3851f01db613190024e89b198d485bb5dc07721

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

Filesize
948B

MD5
966914e2e771de7a4a57a95b6ecfa8a9

SHA1
7a32282fd51dd032967ed4d9a40cc57e265aeff2

SHA256
98d3c70d7004fa807897317bd6cd3e977b9b6c72d4d2565aca0f9f8b1c315cba

SHA512
dc39c7124a9c7c8d4c7e8e16290c46360b8d9a8f4e43edaacbbeb09bdcf20159a53db54d2b322372001b6a3de52b2f88e9088b5fdbc7638816ae0d122bb015f5

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
77fad1dec6867fb7dd395c25c46d8ae5

SHA1
abfecfd6c63bb35ec88d98ef210adefc139d793e

SHA256
02b0ab469998ac630b421de245ee243599422e7f2c2f9714085fc5b837891784

SHA512
ac8d9d660992d076e46ffdb7422d4916789a7ca2f5737c711449f518745dee197ed1c08e50f81f92cb7d2d1ea94fe024e77a8295e1be05c5a49a0fd7495776d3

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vgz3aouy.oh5.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1848-72-0x000001DFFC220000-0x000001DFFC22A000-memory.dmp

Filesize
40KB

Download
memory/1848-35-0x000001DFFC200000-0x000001DFFC21E000-memory.dmp

Filesize
120KB

Download
memory/1848-94-0x00007FFCC03A0000-0x00007FFCC0E61000-memory.dmp

Filesize
10.8MB

Download
memory/1848-93-0x000001DFFBEA0000-0x000001DFFBFA2000-memory.dmp

Filesize
1.0MB

Download
memory/1848-2-0x00007FFCC03A0000-0x00007FFCC0E61000-memory.dmp

Filesize
10.8MB

Download
memory/1848-33-0x000001DFFC270000-0x000001DFFC2E6000-memory.dmp

Filesize
472KB

Download
memory/1848-34-0x000001DFFC2F0000-0x000001DFFC340000-memory.dmp

Filesize
320KB

Download
memory/1848-73-0x000001DFFC250000-0x000001DFFC262000-memory.dmp

Filesize
72KB

Download
memory/1848-1-0x000001DFE19D0000-0x000001DFE1A52000-memory.dmp

Filesize
520KB

Download
memory/1848-0-0x00007FFCC03A3000-0x00007FFCC03A5000-memory.dmp

Filesize
8KB

Download
memory/3848-4-0x00007FFCC03A0000-0x00007FFCC0E61000-memory.dmp

Filesize
10.8MB

Download
memory/3848-10-0x0000013DE7F90000-0x0000013DE7FB2000-memory.dmp

Filesize
136KB

Download
memory/3848-15-0x00007FFCC03A0000-0x00007FFCC0E61000-memory.dmp

Filesize
10.8MB

Download
memory/3848-3-0x00007FFCC03A0000-0x00007FFCC0E61000-memory.dmp

Filesize
10.8MB

Download
memory/3848-18-0x00007FFCC03A0000-0x00007FFCC0E61000-memory.dmp

Filesize
10.8MB

Download