umbral | 6afc8f233e1d02de92ab0dad9bb3724ab5b868c5ca59cfd52df6bc384ae1cf36

Analysis

max time kernel
1799s
max time network
1168s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
07-06-2024 16:37

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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
behavioral2/memory/320-1-0x000001B7BAB40000-0x000001B7BAB80000-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
2448	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
18	discord.com
19	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
12	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
64	wmic.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2448	powershell.exe
2448	powershell.exe
4272	powershell.exe
4272	powershell.exe
920	powershell.exe
920	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	320	TOKEN BOT.exe
Token: SeDebugPrivilege	2448	powershell.exe
Token: SeDebugPrivilege	4272	powershell.exe
Token: SeIncreaseQuotaPrivilege	4376	wmic.exe
Token: SeSecurityPrivilege	4376	wmic.exe
Token: SeTakeOwnershipPrivilege	4376	wmic.exe
Token: SeLoadDriverPrivilege	4376	wmic.exe
Token: SeSystemProfilePrivilege	4376	wmic.exe
Token: SeSystemtimePrivilege	4376	wmic.exe
Token: SeProfSingleProcessPrivilege	4376	wmic.exe
Token: SeIncBasePriorityPrivilege	4376	wmic.exe
Token: SeCreatePagefilePrivilege	4376	wmic.exe
Token: SeBackupPrivilege	4376	wmic.exe
Token: SeRestorePrivilege	4376	wmic.exe
Token: SeShutdownPrivilege	4376	wmic.exe
Token: SeDebugPrivilege	4376	wmic.exe
Token: SeSystemEnvironmentPrivilege	4376	wmic.exe
Token: SeRemoteShutdownPrivilege	4376	wmic.exe
Token: SeUndockPrivilege	4376	wmic.exe
Token: SeManageVolumePrivilege	4376	wmic.exe
Token: 33	4376	wmic.exe
Token: 34	4376	wmic.exe
Token: 35	4376	wmic.exe
Token: 36	4376	wmic.exe
Token: SeIncreaseQuotaPrivilege	4376	wmic.exe
Token: SeSecurityPrivilege	4376	wmic.exe
Token: SeTakeOwnershipPrivilege	4376	wmic.exe
Token: SeLoadDriverPrivilege	4376	wmic.exe
Token: SeSystemProfilePrivilege	4376	wmic.exe
Token: SeSystemtimePrivilege	4376	wmic.exe
Token: SeProfSingleProcessPrivilege	4376	wmic.exe
Token: SeIncBasePriorityPrivilege	4376	wmic.exe
Token: SeCreatePagefilePrivilege	4376	wmic.exe
Token: SeBackupPrivilege	4376	wmic.exe
Token: SeRestorePrivilege	4376	wmic.exe
Token: SeShutdownPrivilege	4376	wmic.exe
Token: SeDebugPrivilege	4376	wmic.exe
Token: SeSystemEnvironmentPrivilege	4376	wmic.exe
Token: SeRemoteShutdownPrivilege	4376	wmic.exe
Token: SeUndockPrivilege	4376	wmic.exe
Token: SeManageVolumePrivilege	4376	wmic.exe
Token: 33	4376	wmic.exe
Token: 34	4376	wmic.exe
Token: 35	4376	wmic.exe
Token: 36	4376	wmic.exe
Token: SeIncreaseQuotaPrivilege	4912	wmic.exe
Token: SeSecurityPrivilege	4912	wmic.exe
Token: SeTakeOwnershipPrivilege	4912	wmic.exe
Token: SeLoadDriverPrivilege	4912	wmic.exe
Token: SeSystemProfilePrivilege	4912	wmic.exe
Token: SeSystemtimePrivilege	4912	wmic.exe
Token: SeProfSingleProcessPrivilege	4912	wmic.exe
Token: SeIncBasePriorityPrivilege	4912	wmic.exe
Token: SeCreatePagefilePrivilege	4912	wmic.exe
Token: SeBackupPrivilege	4912	wmic.exe
Token: SeRestorePrivilege	4912	wmic.exe
Token: SeShutdownPrivilege	4912	wmic.exe
Token: SeDebugPrivilege	4912	wmic.exe
Token: SeSystemEnvironmentPrivilege	4912	wmic.exe
Token: SeRemoteShutdownPrivilege	4912	wmic.exe
Token: SeUndockPrivilege	4912	wmic.exe
Token: SeManageVolumePrivilege	4912	wmic.exe
Token: 33	4912	wmic.exe
Token: 34	4912	wmic.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 320 wrote to memory of 2448	320	TOKEN BOT.exe	82
PID 320 wrote to memory of 2448	320	TOKEN BOT.exe	82
PID 320 wrote to memory of 4272	320	TOKEN BOT.exe	84
PID 320 wrote to memory of 4272	320	TOKEN BOT.exe	84
PID 320 wrote to memory of 4376	320	TOKEN BOT.exe	89
PID 320 wrote to memory of 4376	320	TOKEN BOT.exe	89
PID 320 wrote to memory of 4912	320	TOKEN BOT.exe	92
PID 320 wrote to memory of 4912	320	TOKEN BOT.exe	92
PID 320 wrote to memory of 1932	320	TOKEN BOT.exe	94
PID 320 wrote to memory of 1932	320	TOKEN BOT.exe	94
PID 320 wrote to memory of 920	320	TOKEN BOT.exe	98
PID 320 wrote to memory of 920	320	TOKEN BOT.exe	98
PID 320 wrote to memory of 64	320	TOKEN BOT.exe	100
PID 320 wrote to memory of 64	320	TOKEN BOT.exe	100

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:320
- 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:2448
- 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:4272
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4376
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4912
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1932
- 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:920
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:64

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\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
948B

MD5
17d8127be94d3c1b6fcc9a4ed585003e

SHA1
789874fcc7c778c723f3e89822d8cc8750c6c4c8

SHA256
ea357ad1f95863b3618d31e5b0f90495331f64de2b784d9e185b48668c937a7b

SHA512
bb18b6d07d82227f5cfbe3eb460df79ec892c560ad2964dcd4782aa26336ae15059843bf46a739bdd4a4daa58057f99102531a756a1cf434ce6449b3cd35a98e

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_bzam1rfa.r5i.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/320-33-0x000001B7D5220000-0x000001B7D5270000-memory.dmp

Filesize
320KB

Download
memory/320-47-0x000001B7D5E10000-0x000001B7D5E1A000-memory.dmp

Filesize
40KB

Download
memory/320-64-0x00007FF8AF060000-0x00007FF8AFB21000-memory.dmp

Filesize
10.8MB

Download
memory/320-1-0x000001B7BAB40000-0x000001B7BAB80000-memory.dmp

Filesize
256KB

Download
memory/320-48-0x000001B7D5E40000-0x000001B7D5E52000-memory.dmp

Filesize
72KB

Download
memory/320-34-0x000001B7D5200000-0x000001B7D521E000-memory.dmp

Filesize
120KB

Download
memory/320-2-0x00007FF8AF060000-0x00007FF8AFB21000-memory.dmp

Filesize
10.8MB

Download
memory/320-32-0x000001B7D5270000-0x000001B7D52E6000-memory.dmp

Filesize
472KB

Download
memory/320-0-0x00007FF8AF063000-0x00007FF8AF065000-memory.dmp

Filesize
8KB

Download
memory/2448-3-0x00000241F4880000-0x00000241F48A2000-memory.dmp

Filesize
136KB

Download
memory/2448-13-0x00007FF8AF060000-0x00007FF8AFB21000-memory.dmp

Filesize
10.8MB

Download
memory/2448-18-0x00007FF8AF060000-0x00007FF8AFB21000-memory.dmp

Filesize
10.8MB

Download
memory/2448-15-0x00007FF8AF060000-0x00007FF8AFB21000-memory.dmp

Filesize
10.8MB

Download
memory/2448-14-0x00007FF8AF060000-0x00007FF8AFB21000-memory.dmp

Filesize
10.8MB

Download