umbral | 921ba78ef5661ee885d93756f28f7e4df163f1ea910af6c68266f856b112ce76

Analysis

max time kernel
15s
max time network
19s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
13-12-2024 07:01

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General

Target

85eadbe66e59f3512bfed3edd076ed4c.exe
Size

231KB
MD5

85eadbe66e59f3512bfed3edd076ed4c
SHA1

3fac3f7414bd4ced53beb1d89402524a2b9cb510
SHA256

921ba78ef5661ee885d93756f28f7e4df163f1ea910af6c68266f856b112ce76
SHA512

18ca000aaec36bb3221cd70e042b1dd49ace60ff1469059eb4e27c0af8889d5dc31133827a97a8f146970097b70152e7e65d5286fa0721476c5b8cb06277637e
SSDEEP

6144:RloZM3rIkd8g+EtXHkv/iD4iYQ5ClU8e1mmN5i:joZIL+EP8Jo1Ng

Score

10^/10

umbral execution stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2256-1-0x0000000001250000-0x0000000001290000-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 3 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2212	powershell.exe
2976	powershell.exe
1568	powershell.exe

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

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1436	wmic.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2212	powershell.exe
2976	powershell.exe
1568	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2256	85eadbe66e59f3512bfed3edd076ed4c.exe
Token: SeDebugPrivilege	2212	powershell.exe
Token: SeDebugPrivilege	2976	powershell.exe
Token: SeIncreaseQuotaPrivilege	3052	wmic.exe
Token: SeSecurityPrivilege	3052	wmic.exe
Token: SeTakeOwnershipPrivilege	3052	wmic.exe
Token: SeLoadDriverPrivilege	3052	wmic.exe
Token: SeSystemProfilePrivilege	3052	wmic.exe
Token: SeSystemtimePrivilege	3052	wmic.exe
Token: SeProfSingleProcessPrivilege	3052	wmic.exe
Token: SeIncBasePriorityPrivilege	3052	wmic.exe
Token: SeCreatePagefilePrivilege	3052	wmic.exe
Token: SeBackupPrivilege	3052	wmic.exe
Token: SeRestorePrivilege	3052	wmic.exe
Token: SeShutdownPrivilege	3052	wmic.exe
Token: SeDebugPrivilege	3052	wmic.exe
Token: SeSystemEnvironmentPrivilege	3052	wmic.exe
Token: SeRemoteShutdownPrivilege	3052	wmic.exe
Token: SeUndockPrivilege	3052	wmic.exe
Token: SeManageVolumePrivilege	3052	wmic.exe
Token: 33	3052	wmic.exe
Token: 34	3052	wmic.exe
Token: 35	3052	wmic.exe
Token: SeIncreaseQuotaPrivilege	3052	wmic.exe
Token: SeSecurityPrivilege	3052	wmic.exe
Token: SeTakeOwnershipPrivilege	3052	wmic.exe
Token: SeLoadDriverPrivilege	3052	wmic.exe
Token: SeSystemProfilePrivilege	3052	wmic.exe
Token: SeSystemtimePrivilege	3052	wmic.exe
Token: SeProfSingleProcessPrivilege	3052	wmic.exe
Token: SeIncBasePriorityPrivilege	3052	wmic.exe
Token: SeCreatePagefilePrivilege	3052	wmic.exe
Token: SeBackupPrivilege	3052	wmic.exe
Token: SeRestorePrivilege	3052	wmic.exe
Token: SeShutdownPrivilege	3052	wmic.exe
Token: SeDebugPrivilege	3052	wmic.exe
Token: SeSystemEnvironmentPrivilege	3052	wmic.exe
Token: SeRemoteShutdownPrivilege	3052	wmic.exe
Token: SeUndockPrivilege	3052	wmic.exe
Token: SeManageVolumePrivilege	3052	wmic.exe
Token: 33	3052	wmic.exe
Token: 34	3052	wmic.exe
Token: 35	3052	wmic.exe
Token: SeIncreaseQuotaPrivilege	2552	wmic.exe
Token: SeSecurityPrivilege	2552	wmic.exe
Token: SeTakeOwnershipPrivilege	2552	wmic.exe
Token: SeLoadDriverPrivilege	2552	wmic.exe
Token: SeSystemProfilePrivilege	2552	wmic.exe
Token: SeSystemtimePrivilege	2552	wmic.exe
Token: SeProfSingleProcessPrivilege	2552	wmic.exe
Token: SeIncBasePriorityPrivilege	2552	wmic.exe
Token: SeCreatePagefilePrivilege	2552	wmic.exe
Token: SeBackupPrivilege	2552	wmic.exe
Token: SeRestorePrivilege	2552	wmic.exe
Token: SeShutdownPrivilege	2552	wmic.exe
Token: SeDebugPrivilege	2552	wmic.exe
Token: SeSystemEnvironmentPrivilege	2552	wmic.exe
Token: SeRemoteShutdownPrivilege	2552	wmic.exe
Token: SeUndockPrivilege	2552	wmic.exe
Token: SeManageVolumePrivilege	2552	wmic.exe
Token: 33	2552	wmic.exe
Token: 34	2552	wmic.exe
Token: 35	2552	wmic.exe
Token: SeIncreaseQuotaPrivilege	2552	wmic.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2256 wrote to memory of 2212	2256	85eadbe66e59f3512bfed3edd076ed4c.exe	30
PID 2256 wrote to memory of 2212	2256	85eadbe66e59f3512bfed3edd076ed4c.exe	30
PID 2256 wrote to memory of 2212	2256	85eadbe66e59f3512bfed3edd076ed4c.exe	30
PID 2256 wrote to memory of 2976	2256	85eadbe66e59f3512bfed3edd076ed4c.exe	32
PID 2256 wrote to memory of 2976	2256	85eadbe66e59f3512bfed3edd076ed4c.exe	32
PID 2256 wrote to memory of 2976	2256	85eadbe66e59f3512bfed3edd076ed4c.exe	32
PID 2256 wrote to memory of 3052	2256	85eadbe66e59f3512bfed3edd076ed4c.exe	34
PID 2256 wrote to memory of 3052	2256	85eadbe66e59f3512bfed3edd076ed4c.exe	34
PID 2256 wrote to memory of 3052	2256	85eadbe66e59f3512bfed3edd076ed4c.exe	34
PID 2256 wrote to memory of 2552	2256	85eadbe66e59f3512bfed3edd076ed4c.exe	37
PID 2256 wrote to memory of 2552	2256	85eadbe66e59f3512bfed3edd076ed4c.exe	37
PID 2256 wrote to memory of 2552	2256	85eadbe66e59f3512bfed3edd076ed4c.exe	37
PID 2256 wrote to memory of 1988	2256	85eadbe66e59f3512bfed3edd076ed4c.exe	39
PID 2256 wrote to memory of 1988	2256	85eadbe66e59f3512bfed3edd076ed4c.exe	39
PID 2256 wrote to memory of 1988	2256	85eadbe66e59f3512bfed3edd076ed4c.exe	39
PID 2256 wrote to memory of 1568	2256	85eadbe66e59f3512bfed3edd076ed4c.exe	41
PID 2256 wrote to memory of 1568	2256	85eadbe66e59f3512bfed3edd076ed4c.exe	41
PID 2256 wrote to memory of 1568	2256	85eadbe66e59f3512bfed3edd076ed4c.exe	41
PID 2256 wrote to memory of 1436	2256	85eadbe66e59f3512bfed3edd076ed4c.exe	43
PID 2256 wrote to memory of 1436	2256	85eadbe66e59f3512bfed3edd076ed4c.exe	43
PID 2256 wrote to memory of 1436	2256	85eadbe66e59f3512bfed3edd076ed4c.exe	43

C:\Users\Admin\AppData\Local\Temp\85eadbe66e59f3512bfed3edd076ed4c.exe
"C:\Users\Admin\AppData\Local\Temp\85eadbe66e59f3512bfed3edd076ed4c.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2256
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\85eadbe66e59f3512bfed3edd076ed4c.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2212
- 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:2976
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3052
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2552
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1988
- 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:1568
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1436

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

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

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
4311d040b6ba937e54db2a9c6eea5a91

SHA1
3d36cdcbe8c1407e81fdefa114e4beb5ae2aebbc

SHA256
96b5a41f0aca45594addd8801a853dfb0e9e7b7493e66de7403ddba9bed7998f

SHA512
371df623b4bc9a7d0f1fccda37783b4c6c29bb8548fbe5dea58fc708022802b19edaef18e833ffde56046b67f2cd36ca896b9eb9bfffe0963f420a6a4cae5a6d

Download Submit
memory/1568-30-0x000000001B330000-0x000000001B612000-memory.dmp

Filesize
2.9MB

Download
memory/2212-12-0x000007FEEC420000-0x000007FEECDBD000-memory.dmp

Filesize
9.6MB

Download
memory/2212-13-0x000007FEEC420000-0x000007FEECDBD000-memory.dmp

Filesize
9.6MB

Download
memory/2212-8-0x000007FEEC420000-0x000007FEECDBD000-memory.dmp

Filesize
9.6MB

Download
memory/2212-9-0x000000001B3C0000-0x000000001B6A2000-memory.dmp

Filesize
2.9MB

Download
memory/2212-10-0x0000000002470000-0x0000000002478000-memory.dmp

Filesize
32KB

Download
memory/2212-11-0x000007FEEC420000-0x000007FEECDBD000-memory.dmp

Filesize
9.6MB

Download
memory/2212-14-0x000007FEEC420000-0x000007FEECDBD000-memory.dmp

Filesize
9.6MB

Download
memory/2212-7-0x000007FEEC6DE000-0x000007FEEC6DF000-memory.dmp

Filesize
4KB

Download
memory/2256-0-0x000007FEF5163000-0x000007FEF5164000-memory.dmp

Filesize
4KB

Download
memory/2256-15-0x000007FEF5163000-0x000007FEF5164000-memory.dmp

Filesize
4KB

Download
memory/2256-16-0x000007FEF5160000-0x000007FEF5B4C000-memory.dmp

Filesize
9.9MB

Download
memory/2256-2-0x000007FEF5160000-0x000007FEF5B4C000-memory.dmp

Filesize
9.9MB

Download
memory/2256-1-0x0000000001250000-0x0000000001290000-memory.dmp

Filesize
256KB

Download
memory/2256-33-0x000007FEF5160000-0x000007FEF5B4C000-memory.dmp

Filesize
9.9MB

Download
memory/2976-22-0x000000001B130000-0x000000001B412000-memory.dmp

Filesize
2.9MB

Download
memory/2976-23-0x0000000001FC0000-0x0000000001FC8000-memory.dmp

Filesize
32KB

Download