umbral | 6afc8f233e1d02de92ab0dad9bb3724ab5b868c5ca59cfd52df6bc384ae1cf36

Analysis

max time kernel
1561s
max time network
1562s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
07-06-2024 16:38

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General

Target

TOKEN BOT.exe
Size

231KB
MD5

6237b7bfdeef6aa9095852ac74ab5e6e
SHA1

deaf71a3709b52817cdfe5aec902507c8b89b36b
SHA256

b4aff6f798705f34a3edf6b528a71aa2dbbeb6d71299799eb1042a09822af2f6
SHA512

263e769b21fc67f6ccb3c3135b66635cfb12af503b3d90bcc304a1d0b3f7a2524df630c2f3d2dbb968eb5296569e77a49aa66e0627eaea7d5df89c761454541d
SSDEEP

6144:RloZMQrIkd8g+EtXHkv/iD4vBLU69VewbGkFZw1fUtLJU8e1mci:joZ3L+EP8vBLU69VewbGkFZwlkL42

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2964-1-0x00000000000B0000-0x00000000000F0000-memory.dmp	family_umbral

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

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

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

execution

PowerShell

T1059.001

pid	Process
1156	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	TOKEN BOT.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
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
1720	wmic.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1156	powershell.exe
2664	powershell.exe
3048	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2964	TOKEN BOT.exe
Token: SeDebugPrivilege	1156	powershell.exe
Token: SeDebugPrivilege	2664	powershell.exe
Token: SeIncreaseQuotaPrivilege	2564	wmic.exe
Token: SeSecurityPrivilege	2564	wmic.exe
Token: SeTakeOwnershipPrivilege	2564	wmic.exe
Token: SeLoadDriverPrivilege	2564	wmic.exe
Token: SeSystemProfilePrivilege	2564	wmic.exe
Token: SeSystemtimePrivilege	2564	wmic.exe
Token: SeProfSingleProcessPrivilege	2564	wmic.exe
Token: SeIncBasePriorityPrivilege	2564	wmic.exe
Token: SeCreatePagefilePrivilege	2564	wmic.exe
Token: SeBackupPrivilege	2564	wmic.exe
Token: SeRestorePrivilege	2564	wmic.exe
Token: SeShutdownPrivilege	2564	wmic.exe
Token: SeDebugPrivilege	2564	wmic.exe
Token: SeSystemEnvironmentPrivilege	2564	wmic.exe
Token: SeRemoteShutdownPrivilege	2564	wmic.exe
Token: SeUndockPrivilege	2564	wmic.exe
Token: SeManageVolumePrivilege	2564	wmic.exe
Token: 33	2564	wmic.exe
Token: 34	2564	wmic.exe
Token: 35	2564	wmic.exe
Token: SeIncreaseQuotaPrivilege	2564	wmic.exe
Token: SeSecurityPrivilege	2564	wmic.exe
Token: SeTakeOwnershipPrivilege	2564	wmic.exe
Token: SeLoadDriverPrivilege	2564	wmic.exe
Token: SeSystemProfilePrivilege	2564	wmic.exe
Token: SeSystemtimePrivilege	2564	wmic.exe
Token: SeProfSingleProcessPrivilege	2564	wmic.exe
Token: SeIncBasePriorityPrivilege	2564	wmic.exe
Token: SeCreatePagefilePrivilege	2564	wmic.exe
Token: SeBackupPrivilege	2564	wmic.exe
Token: SeRestorePrivilege	2564	wmic.exe
Token: SeShutdownPrivilege	2564	wmic.exe
Token: SeDebugPrivilege	2564	wmic.exe
Token: SeSystemEnvironmentPrivilege	2564	wmic.exe
Token: SeRemoteShutdownPrivilege	2564	wmic.exe
Token: SeUndockPrivilege	2564	wmic.exe
Token: SeManageVolumePrivilege	2564	wmic.exe
Token: 33	2564	wmic.exe
Token: 34	2564	wmic.exe
Token: 35	2564	wmic.exe
Token: SeIncreaseQuotaPrivilege	2776	wmic.exe
Token: SeSecurityPrivilege	2776	wmic.exe
Token: SeTakeOwnershipPrivilege	2776	wmic.exe
Token: SeLoadDriverPrivilege	2776	wmic.exe
Token: SeSystemProfilePrivilege	2776	wmic.exe
Token: SeSystemtimePrivilege	2776	wmic.exe
Token: SeProfSingleProcessPrivilege	2776	wmic.exe
Token: SeIncBasePriorityPrivilege	2776	wmic.exe
Token: SeCreatePagefilePrivilege	2776	wmic.exe
Token: SeBackupPrivilege	2776	wmic.exe
Token: SeRestorePrivilege	2776	wmic.exe
Token: SeShutdownPrivilege	2776	wmic.exe
Token: SeDebugPrivilege	2776	wmic.exe
Token: SeSystemEnvironmentPrivilege	2776	wmic.exe
Token: SeRemoteShutdownPrivilege	2776	wmic.exe
Token: SeUndockPrivilege	2776	wmic.exe
Token: SeManageVolumePrivilege	2776	wmic.exe
Token: 33	2776	wmic.exe
Token: 34	2776	wmic.exe
Token: 35	2776	wmic.exe
Token: SeIncreaseQuotaPrivilege	2776	wmic.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2964 wrote to memory of 1156	2964	TOKEN BOT.exe	28
PID 2964 wrote to memory of 1156	2964	TOKEN BOT.exe	28
PID 2964 wrote to memory of 1156	2964	TOKEN BOT.exe	28
PID 2964 wrote to memory of 2664	2964	TOKEN BOT.exe	30
PID 2964 wrote to memory of 2664	2964	TOKEN BOT.exe	30
PID 2964 wrote to memory of 2664	2964	TOKEN BOT.exe	30
PID 2964 wrote to memory of 2564	2964	TOKEN BOT.exe	32
PID 2964 wrote to memory of 2564	2964	TOKEN BOT.exe	32
PID 2964 wrote to memory of 2564	2964	TOKEN BOT.exe	32
PID 2964 wrote to memory of 2776	2964	TOKEN BOT.exe	35
PID 2964 wrote to memory of 2776	2964	TOKEN BOT.exe	35
PID 2964 wrote to memory of 2776	2964	TOKEN BOT.exe	35
PID 2964 wrote to memory of 2848	2964	TOKEN BOT.exe	37
PID 2964 wrote to memory of 2848	2964	TOKEN BOT.exe	37
PID 2964 wrote to memory of 2848	2964	TOKEN BOT.exe	37
PID 2964 wrote to memory of 3048	2964	TOKEN BOT.exe	39
PID 2964 wrote to memory of 3048	2964	TOKEN BOT.exe	39
PID 2964 wrote to memory of 3048	2964	TOKEN BOT.exe	39
PID 2964 wrote to memory of 1720	2964	TOKEN BOT.exe	41
PID 2964 wrote to memory of 1720	2964	TOKEN BOT.exe	41
PID 2964 wrote to memory of 1720	2964	TOKEN BOT.exe	41

C:\Users\Admin\AppData\Local\Temp\TOKEN BOT.exe
"C:\Users\Admin\AppData\Local\Temp\TOKEN BOT.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2964
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\TOKEN BOT.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1156
- 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⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2664
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2564
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2776
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2848
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:3048
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1720

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

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

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
a67732045b096ec4f5ae09d861800770

SHA1
0ee61491be20b0124fcee9631282437d6a1bb472

SHA256
97398cfe7274be5d40d11e0b00f12719a89ace9a1037aa7441580b7b1fd27df5

SHA512
c7d21ef527044c14df092066f0a9eef12e90ee8043f240f1a6b75ad0bfa7574b4fa3cfed6de4fb823fada5aa36eae89f3e467ec8c1527c298f2c5f3cb08288ae

Download Submit
memory/1156-8-0x000000001B670000-0x000000001B952000-memory.dmp

Filesize
2.9MB

Download
memory/1156-13-0x000007FEEDDC0000-0x000007FEEE75D000-memory.dmp

Filesize
9.6MB

Download
memory/1156-15-0x000007FEEDDC0000-0x000007FEEE75D000-memory.dmp

Filesize
9.6MB

Download
memory/1156-9-0x0000000001F00000-0x0000000001F08000-memory.dmp

Filesize
32KB

Download
memory/1156-10-0x000007FEEDDC0000-0x000007FEEE75D000-memory.dmp

Filesize
9.6MB

Download
memory/1156-11-0x000007FEEDDC0000-0x000007FEEE75D000-memory.dmp

Filesize
9.6MB

Download
memory/1156-14-0x000007FEEDDC0000-0x000007FEEE75D000-memory.dmp

Filesize
9.6MB

Download
memory/1156-7-0x000007FEEE07E000-0x000007FEEE07F000-memory.dmp

Filesize
4KB

Download
memory/1156-12-0x000007FEEDDC0000-0x000007FEEE75D000-memory.dmp

Filesize
9.6MB

Download
memory/2664-22-0x0000000002980000-0x0000000002988000-memory.dmp

Filesize
32KB

Download
memory/2664-21-0x000000001B620000-0x000000001B902000-memory.dmp

Filesize
2.9MB

Download
memory/2964-0-0x000007FEF5E43000-0x000007FEF5E44000-memory.dmp

Filesize
4KB

Download
memory/2964-2-0x000007FEF5E40000-0x000007FEF682C000-memory.dmp

Filesize
9.9MB

Download
memory/2964-1-0x00000000000B0000-0x00000000000F0000-memory.dmp

Filesize
256KB

Download
memory/2964-40-0x000007FEF5E40000-0x000007FEF682C000-memory.dmp

Filesize
9.9MB

Download
memory/3048-37-0x0000000001EF0000-0x0000000001EF8000-memory.dmp

Filesize
32KB

Download