umbral | 88fcadc1210e7789f013cd383b241248f5024808ec9b7be746e4fff3d9279035

Analysis

max time kernel
19s
max time network
21s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
13-08-2024 22:27

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General

Target

9c4e92809ffd7ee566bd611107300d60N.exe
Size

229KB
MD5

9c4e92809ffd7ee566bd611107300d60
SHA1

8791a67b7bcf9e789c9f7fc250cfd565e853301c
SHA256

88fcadc1210e7789f013cd383b241248f5024808ec9b7be746e4fff3d9279035
SHA512

718aee3ab5d5b7b6f3c94f8c0b72037e6c972888475789b020c14b69b97324977341494e035b88029cbce30a7f4365e5f785a05b4b73dda088671ec42cef6bb4
SSDEEP

6144:9loZM+rIkd8g+EtXHkv/iD4iOKft74szxKrd4UB1sb8e1mdi:foZtL+EP8iOKft74szxKrd4UBSD

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2436-1-0x0000000000E00000-0x0000000000E40000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2112	powershell.exe
1636	powershell.exe
2776	powershell.exe
2520	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	9c4e92809ffd7ee566bd611107300d60N.exe

Deletes itself 1 IoCs

pid	Process
2156	cmd.exe

Reads user/profile data of web browsers 2 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

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
2156	cmd.exe
1628	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2220	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1628	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2436	9c4e92809ffd7ee566bd611107300d60N.exe
2520	powershell.exe
2776	powershell.exe
2112	powershell.exe
2888	powershell.exe
1636	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2436	9c4e92809ffd7ee566bd611107300d60N.exe
Token: SeIncreaseQuotaPrivilege	2228	wmic.exe
Token: SeSecurityPrivilege	2228	wmic.exe
Token: SeTakeOwnershipPrivilege	2228	wmic.exe
Token: SeLoadDriverPrivilege	2228	wmic.exe
Token: SeSystemProfilePrivilege	2228	wmic.exe
Token: SeSystemtimePrivilege	2228	wmic.exe
Token: SeProfSingleProcessPrivilege	2228	wmic.exe
Token: SeIncBasePriorityPrivilege	2228	wmic.exe
Token: SeCreatePagefilePrivilege	2228	wmic.exe
Token: SeBackupPrivilege	2228	wmic.exe
Token: SeRestorePrivilege	2228	wmic.exe
Token: SeShutdownPrivilege	2228	wmic.exe
Token: SeDebugPrivilege	2228	wmic.exe
Token: SeSystemEnvironmentPrivilege	2228	wmic.exe
Token: SeRemoteShutdownPrivilege	2228	wmic.exe
Token: SeUndockPrivilege	2228	wmic.exe
Token: SeManageVolumePrivilege	2228	wmic.exe
Token: 33	2228	wmic.exe
Token: 34	2228	wmic.exe
Token: 35	2228	wmic.exe
Token: SeIncreaseQuotaPrivilege	2228	wmic.exe
Token: SeSecurityPrivilege	2228	wmic.exe
Token: SeTakeOwnershipPrivilege	2228	wmic.exe
Token: SeLoadDriverPrivilege	2228	wmic.exe
Token: SeSystemProfilePrivilege	2228	wmic.exe
Token: SeSystemtimePrivilege	2228	wmic.exe
Token: SeProfSingleProcessPrivilege	2228	wmic.exe
Token: SeIncBasePriorityPrivilege	2228	wmic.exe
Token: SeCreatePagefilePrivilege	2228	wmic.exe
Token: SeBackupPrivilege	2228	wmic.exe
Token: SeRestorePrivilege	2228	wmic.exe
Token: SeShutdownPrivilege	2228	wmic.exe
Token: SeDebugPrivilege	2228	wmic.exe
Token: SeSystemEnvironmentPrivilege	2228	wmic.exe
Token: SeRemoteShutdownPrivilege	2228	wmic.exe
Token: SeUndockPrivilege	2228	wmic.exe
Token: SeManageVolumePrivilege	2228	wmic.exe
Token: 33	2228	wmic.exe
Token: 34	2228	wmic.exe
Token: 35	2228	wmic.exe
Token: SeDebugPrivilege	2520	powershell.exe
Token: SeDebugPrivilege	2776	powershell.exe
Token: SeDebugPrivilege	2112	powershell.exe
Token: SeDebugPrivilege	2888	powershell.exe
Token: SeIncreaseQuotaPrivilege	2412	wmic.exe
Token: SeSecurityPrivilege	2412	wmic.exe
Token: SeTakeOwnershipPrivilege	2412	wmic.exe
Token: SeLoadDriverPrivilege	2412	wmic.exe
Token: SeSystemProfilePrivilege	2412	wmic.exe
Token: SeSystemtimePrivilege	2412	wmic.exe
Token: SeProfSingleProcessPrivilege	2412	wmic.exe
Token: SeIncBasePriorityPrivilege	2412	wmic.exe
Token: SeCreatePagefilePrivilege	2412	wmic.exe
Token: SeBackupPrivilege	2412	wmic.exe
Token: SeRestorePrivilege	2412	wmic.exe
Token: SeShutdownPrivilege	2412	wmic.exe
Token: SeDebugPrivilege	2412	wmic.exe
Token: SeSystemEnvironmentPrivilege	2412	wmic.exe
Token: SeRemoteShutdownPrivilege	2412	wmic.exe
Token: SeUndockPrivilege	2412	wmic.exe
Token: SeManageVolumePrivilege	2412	wmic.exe
Token: 33	2412	wmic.exe
Token: 34	2412	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2436 wrote to memory of 2228	2436	9c4e92809ffd7ee566bd611107300d60N.exe	30
PID 2436 wrote to memory of 2228	2436	9c4e92809ffd7ee566bd611107300d60N.exe	30
PID 2436 wrote to memory of 2228	2436	9c4e92809ffd7ee566bd611107300d60N.exe	30
PID 2436 wrote to memory of 2932	2436	9c4e92809ffd7ee566bd611107300d60N.exe	33
PID 2436 wrote to memory of 2932	2436	9c4e92809ffd7ee566bd611107300d60N.exe	33
PID 2436 wrote to memory of 2932	2436	9c4e92809ffd7ee566bd611107300d60N.exe	33
PID 2436 wrote to memory of 2520	2436	9c4e92809ffd7ee566bd611107300d60N.exe	35
PID 2436 wrote to memory of 2520	2436	9c4e92809ffd7ee566bd611107300d60N.exe	35
PID 2436 wrote to memory of 2520	2436	9c4e92809ffd7ee566bd611107300d60N.exe	35
PID 2436 wrote to memory of 2776	2436	9c4e92809ffd7ee566bd611107300d60N.exe	37
PID 2436 wrote to memory of 2776	2436	9c4e92809ffd7ee566bd611107300d60N.exe	37
PID 2436 wrote to memory of 2776	2436	9c4e92809ffd7ee566bd611107300d60N.exe	37
PID 2436 wrote to memory of 2112	2436	9c4e92809ffd7ee566bd611107300d60N.exe	39
PID 2436 wrote to memory of 2112	2436	9c4e92809ffd7ee566bd611107300d60N.exe	39
PID 2436 wrote to memory of 2112	2436	9c4e92809ffd7ee566bd611107300d60N.exe	39
PID 2436 wrote to memory of 2888	2436	9c4e92809ffd7ee566bd611107300d60N.exe	41
PID 2436 wrote to memory of 2888	2436	9c4e92809ffd7ee566bd611107300d60N.exe	41
PID 2436 wrote to memory of 2888	2436	9c4e92809ffd7ee566bd611107300d60N.exe	41
PID 2436 wrote to memory of 2412	2436	9c4e92809ffd7ee566bd611107300d60N.exe	43
PID 2436 wrote to memory of 2412	2436	9c4e92809ffd7ee566bd611107300d60N.exe	43
PID 2436 wrote to memory of 2412	2436	9c4e92809ffd7ee566bd611107300d60N.exe	43
PID 2436 wrote to memory of 1756	2436	9c4e92809ffd7ee566bd611107300d60N.exe	45
PID 2436 wrote to memory of 1756	2436	9c4e92809ffd7ee566bd611107300d60N.exe	45
PID 2436 wrote to memory of 1756	2436	9c4e92809ffd7ee566bd611107300d60N.exe	45
PID 2436 wrote to memory of 472	2436	9c4e92809ffd7ee566bd611107300d60N.exe	47
PID 2436 wrote to memory of 472	2436	9c4e92809ffd7ee566bd611107300d60N.exe	47
PID 2436 wrote to memory of 472	2436	9c4e92809ffd7ee566bd611107300d60N.exe	47
PID 2436 wrote to memory of 1636	2436	9c4e92809ffd7ee566bd611107300d60N.exe	49
PID 2436 wrote to memory of 1636	2436	9c4e92809ffd7ee566bd611107300d60N.exe	49
PID 2436 wrote to memory of 1636	2436	9c4e92809ffd7ee566bd611107300d60N.exe	49
PID 2436 wrote to memory of 2220	2436	9c4e92809ffd7ee566bd611107300d60N.exe	51
PID 2436 wrote to memory of 2220	2436	9c4e92809ffd7ee566bd611107300d60N.exe	51
PID 2436 wrote to memory of 2220	2436	9c4e92809ffd7ee566bd611107300d60N.exe	51
PID 2436 wrote to memory of 2156	2436	9c4e92809ffd7ee566bd611107300d60N.exe	53
PID 2436 wrote to memory of 2156	2436	9c4e92809ffd7ee566bd611107300d60N.exe	53
PID 2436 wrote to memory of 2156	2436	9c4e92809ffd7ee566bd611107300d60N.exe	53
PID 2156 wrote to memory of 1628	2156	cmd.exe	55
PID 2156 wrote to memory of 1628	2156	cmd.exe	55
PID 2156 wrote to memory of 1628	2156	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2932	attrib.exe

C:\Users\Admin\AppData\Local\Temp\9c4e92809ffd7ee566bd611107300d60N.exe
"C:\Users\Admin\AppData\Local\Temp\9c4e92809ffd7ee566bd611107300d60N.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2436
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2228
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\9c4e92809ffd7ee566bd611107300d60N.exe"
  2⤵
  - Views/modifies file attributes
  PID:2932
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\9c4e92809ffd7ee566bd611107300d60N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2520
- 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:2776
- 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:2112
- 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:2888
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2412
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1756
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:472
- 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:1636
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2220
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\9c4e92809ffd7ee566bd611107300d60N.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2156
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1628

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
b006cbffe222a1d1f6d4a1b80ba1c348

SHA1
ebf1cc8df3893e8eba346f394f30614a5838c401

SHA256
7bf8fde18c3e548115c6dfec1a549ec6bc6bc0333526b93745d68bab3853fcce

SHA512
e39f3e018666a4e73ac3779883cb6203032c79704aa522f018a791e1539a5078eb3a90e5fa75012393729d6d67c12c31f78ea803d343f7212d9535ca1e7bddff

Download Submit
memory/1636-43-0x0000000002310000-0x0000000002318000-memory.dmp

Filesize
32KB

Download
memory/2436-0-0x000007FEF5423000-0x000007FEF5424000-memory.dmp

Filesize
4KB

Download
memory/2436-1-0x0000000000E00000-0x0000000000E40000-memory.dmp

Filesize
256KB

Download
memory/2436-2-0x000007FEF5420000-0x000007FEF5E0C000-memory.dmp

Filesize
9.9MB

Download
memory/2436-47-0x000007FEF5420000-0x000007FEF5E0C000-memory.dmp

Filesize
9.9MB

Download
memory/2520-7-0x000000001B0B0000-0x000000001B392000-memory.dmp

Filesize
2.9MB

Download
memory/2520-8-0x0000000002610000-0x0000000002618000-memory.dmp

Filesize
32KB

Download
memory/2776-14-0x000000001B370000-0x000000001B652000-memory.dmp

Filesize
2.9MB

Download
memory/2776-15-0x0000000001EE0000-0x0000000001EE8000-memory.dmp

Filesize
32KB

Download