umbral | ec3e59d47b01bb3c53ec23cb06829a302e9c6385a7898460138249de6f0cd4b6

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
28-11-2024 22:01

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General

Target

NursultanRealese.exe
Size

245KB
MD5

cd46141c0f7707d1b4be3187a4c922cd
SHA1

36ff990729059807dd86027fb11a5ba26609588c
SHA256

ec3e59d47b01bb3c53ec23cb06829a302e9c6385a7898460138249de6f0cd4b6
SHA512

61f82d754268476ece6e2b83e71494f32feecee37366542fbfa533a57c8aeb2b8f00ce4bcc30ca4730594eafe0ae8e0aca5660009f6d40a1b05895a4cb385c27
SSDEEP

6144:dloZM+rIkd8g+EtXHkv/iD4ZHPtxd58e1my+Jizq6:/oZtL+EP8R1xznhz

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2248-1-0x00000000003F0000-0x0000000000434000-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
1740	powershell.exe
2932	powershell.exe
2968	powershell.exe
2724	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	NursultanRealese.exe

Deletes itself 1 IoCs

pid	Process
1004	cmd.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
9	discord.com
10	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
1004	cmd.exe
1160	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
840	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1160	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2248	NursultanRealese.exe
2724	powershell.exe
1740	powershell.exe
2932	powershell.exe
1060	powershell.exe
2968	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2248	NursultanRealese.exe
Token: SeIncreaseQuotaPrivilege	2752	wmic.exe
Token: SeSecurityPrivilege	2752	wmic.exe
Token: SeTakeOwnershipPrivilege	2752	wmic.exe
Token: SeLoadDriverPrivilege	2752	wmic.exe
Token: SeSystemProfilePrivilege	2752	wmic.exe
Token: SeSystemtimePrivilege	2752	wmic.exe
Token: SeProfSingleProcessPrivilege	2752	wmic.exe
Token: SeIncBasePriorityPrivilege	2752	wmic.exe
Token: SeCreatePagefilePrivilege	2752	wmic.exe
Token: SeBackupPrivilege	2752	wmic.exe
Token: SeRestorePrivilege	2752	wmic.exe
Token: SeShutdownPrivilege	2752	wmic.exe
Token: SeDebugPrivilege	2752	wmic.exe
Token: SeSystemEnvironmentPrivilege	2752	wmic.exe
Token: SeRemoteShutdownPrivilege	2752	wmic.exe
Token: SeUndockPrivilege	2752	wmic.exe
Token: SeManageVolumePrivilege	2752	wmic.exe
Token: 33	2752	wmic.exe
Token: 34	2752	wmic.exe
Token: 35	2752	wmic.exe
Token: SeIncreaseQuotaPrivilege	2752	wmic.exe
Token: SeSecurityPrivilege	2752	wmic.exe
Token: SeTakeOwnershipPrivilege	2752	wmic.exe
Token: SeLoadDriverPrivilege	2752	wmic.exe
Token: SeSystemProfilePrivilege	2752	wmic.exe
Token: SeSystemtimePrivilege	2752	wmic.exe
Token: SeProfSingleProcessPrivilege	2752	wmic.exe
Token: SeIncBasePriorityPrivilege	2752	wmic.exe
Token: SeCreatePagefilePrivilege	2752	wmic.exe
Token: SeBackupPrivilege	2752	wmic.exe
Token: SeRestorePrivilege	2752	wmic.exe
Token: SeShutdownPrivilege	2752	wmic.exe
Token: SeDebugPrivilege	2752	wmic.exe
Token: SeSystemEnvironmentPrivilege	2752	wmic.exe
Token: SeRemoteShutdownPrivilege	2752	wmic.exe
Token: SeUndockPrivilege	2752	wmic.exe
Token: SeManageVolumePrivilege	2752	wmic.exe
Token: 33	2752	wmic.exe
Token: 34	2752	wmic.exe
Token: 35	2752	wmic.exe
Token: SeDebugPrivilege	2724	powershell.exe
Token: SeDebugPrivilege	1740	powershell.exe
Token: SeDebugPrivilege	2932	powershell.exe
Token: SeDebugPrivilege	1060	powershell.exe
Token: SeIncreaseQuotaPrivilege	528	wmic.exe
Token: SeSecurityPrivilege	528	wmic.exe
Token: SeTakeOwnershipPrivilege	528	wmic.exe
Token: SeLoadDriverPrivilege	528	wmic.exe
Token: SeSystemProfilePrivilege	528	wmic.exe
Token: SeSystemtimePrivilege	528	wmic.exe
Token: SeProfSingleProcessPrivilege	528	wmic.exe
Token: SeIncBasePriorityPrivilege	528	wmic.exe
Token: SeCreatePagefilePrivilege	528	wmic.exe
Token: SeBackupPrivilege	528	wmic.exe
Token: SeRestorePrivilege	528	wmic.exe
Token: SeShutdownPrivilege	528	wmic.exe
Token: SeDebugPrivilege	528	wmic.exe
Token: SeSystemEnvironmentPrivilege	528	wmic.exe
Token: SeRemoteShutdownPrivilege	528	wmic.exe
Token: SeUndockPrivilege	528	wmic.exe
Token: SeManageVolumePrivilege	528	wmic.exe
Token: 33	528	wmic.exe
Token: 34	528	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2248 wrote to memory of 2752	2248	NursultanRealese.exe	31
PID 2248 wrote to memory of 2752	2248	NursultanRealese.exe	31
PID 2248 wrote to memory of 2752	2248	NursultanRealese.exe	31
PID 2248 wrote to memory of 2760	2248	NursultanRealese.exe	34
PID 2248 wrote to memory of 2760	2248	NursultanRealese.exe	34
PID 2248 wrote to memory of 2760	2248	NursultanRealese.exe	34
PID 2248 wrote to memory of 2724	2248	NursultanRealese.exe	36
PID 2248 wrote to memory of 2724	2248	NursultanRealese.exe	36
PID 2248 wrote to memory of 2724	2248	NursultanRealese.exe	36
PID 2248 wrote to memory of 1740	2248	NursultanRealese.exe	38
PID 2248 wrote to memory of 1740	2248	NursultanRealese.exe	38
PID 2248 wrote to memory of 1740	2248	NursultanRealese.exe	38
PID 2248 wrote to memory of 2932	2248	NursultanRealese.exe	40
PID 2248 wrote to memory of 2932	2248	NursultanRealese.exe	40
PID 2248 wrote to memory of 2932	2248	NursultanRealese.exe	40
PID 2248 wrote to memory of 1060	2248	NursultanRealese.exe	42
PID 2248 wrote to memory of 1060	2248	NursultanRealese.exe	42
PID 2248 wrote to memory of 1060	2248	NursultanRealese.exe	42
PID 2248 wrote to memory of 528	2248	NursultanRealese.exe	44
PID 2248 wrote to memory of 528	2248	NursultanRealese.exe	44
PID 2248 wrote to memory of 528	2248	NursultanRealese.exe	44
PID 2248 wrote to memory of 1732	2248	NursultanRealese.exe	46
PID 2248 wrote to memory of 1732	2248	NursultanRealese.exe	46
PID 2248 wrote to memory of 1732	2248	NursultanRealese.exe	46
PID 2248 wrote to memory of 372	2248	NursultanRealese.exe	48
PID 2248 wrote to memory of 372	2248	NursultanRealese.exe	48
PID 2248 wrote to memory of 372	2248	NursultanRealese.exe	48
PID 2248 wrote to memory of 2968	2248	NursultanRealese.exe	50
PID 2248 wrote to memory of 2968	2248	NursultanRealese.exe	50
PID 2248 wrote to memory of 2968	2248	NursultanRealese.exe	50
PID 2248 wrote to memory of 840	2248	NursultanRealese.exe	52
PID 2248 wrote to memory of 840	2248	NursultanRealese.exe	52
PID 2248 wrote to memory of 840	2248	NursultanRealese.exe	52
PID 2248 wrote to memory of 1004	2248	NursultanRealese.exe	54
PID 2248 wrote to memory of 1004	2248	NursultanRealese.exe	54
PID 2248 wrote to memory of 1004	2248	NursultanRealese.exe	54
PID 1004 wrote to memory of 1160	1004	cmd.exe	56
PID 1004 wrote to memory of 1160	1004	cmd.exe	56
PID 1004 wrote to memory of 1160	1004	cmd.exe	56

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2760	attrib.exe

C:\Users\Admin\AppData\Local\Temp\NursultanRealese.exe
"C:\Users\Admin\AppData\Local\Temp\NursultanRealese.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2248
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2752
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\NursultanRealese.exe"
  2⤵
  - Views/modifies file attributes
  PID:2760
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\NursultanRealese.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2724
- 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:1740
- 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:2932
- 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:1060
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:528
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1732
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:372
- 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:2968
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:840
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\NursultanRealese.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1004
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1160

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\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
c5914e22864f61414d90a49e4902f64d

SHA1
fe1a26390101c89b844924886f82c7e487c9d961

SHA256
735028f8e42de35541861b1647eb07b7fc9bdf703a67f77af4c594756ed95412

SHA512
424507cbc0a8978d614f1571d897a751ed6c5bf397d0c42f067d58ab50383786325b441cf0a3163de1d33453f6099558407035a020236e404cbb30480b9c4de4

Download Submit
memory/1740-14-0x000000001B650000-0x000000001B932000-memory.dmp

Filesize
2.9MB

Download
memory/1740-15-0x00000000028F0000-0x00000000028F8000-memory.dmp

Filesize
32KB

Download
memory/2248-0-0x000007FEF5173000-0x000007FEF5174000-memory.dmp

Filesize
4KB

Download
memory/2248-1-0x00000000003F0000-0x0000000000434000-memory.dmp

Filesize
272KB

Download
memory/2248-2-0x000007FEF5170000-0x000007FEF5B5C000-memory.dmp

Filesize
9.9MB

Download
memory/2248-48-0x000007FEF5170000-0x000007FEF5B5C000-memory.dmp

Filesize
9.9MB

Download
memory/2724-7-0x000000001B6C0000-0x000000001B9A2000-memory.dmp

Filesize
2.9MB

Download
memory/2724-8-0x0000000001E00000-0x0000000001E08000-memory.dmp

Filesize
32KB

Download
memory/2968-44-0x0000000002810000-0x0000000002818000-memory.dmp

Filesize
32KB

Download