umbral | 6afc8f233e1d02de92ab0dad9bb3724ab5b868c5ca59cfd52df6bc384ae1cf36

Analysis

max time kernel
1350s
max time network
1171s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-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
behavioral2/memory/4028-0-0x000001133AC80000-0x000001133ACC0000-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
1460	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
20	discord.com
21	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
14	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4756	wmic.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1460	powershell.exe
1460	powershell.exe
2908	powershell.exe
2908	powershell.exe
1548	powershell.exe
1548	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4028	TOKEN BOT.exe
Token: SeDebugPrivilege	1460	powershell.exe
Token: SeDebugPrivilege	2908	powershell.exe
Token: SeIncreaseQuotaPrivilege	3988	wmic.exe
Token: SeSecurityPrivilege	3988	wmic.exe
Token: SeTakeOwnershipPrivilege	3988	wmic.exe
Token: SeLoadDriverPrivilege	3988	wmic.exe
Token: SeSystemProfilePrivilege	3988	wmic.exe
Token: SeSystemtimePrivilege	3988	wmic.exe
Token: SeProfSingleProcessPrivilege	3988	wmic.exe
Token: SeIncBasePriorityPrivilege	3988	wmic.exe
Token: SeCreatePagefilePrivilege	3988	wmic.exe
Token: SeBackupPrivilege	3988	wmic.exe
Token: SeRestorePrivilege	3988	wmic.exe
Token: SeShutdownPrivilege	3988	wmic.exe
Token: SeDebugPrivilege	3988	wmic.exe
Token: SeSystemEnvironmentPrivilege	3988	wmic.exe
Token: SeRemoteShutdownPrivilege	3988	wmic.exe
Token: SeUndockPrivilege	3988	wmic.exe
Token: SeManageVolumePrivilege	3988	wmic.exe
Token: 33	3988	wmic.exe
Token: 34	3988	wmic.exe
Token: 35	3988	wmic.exe
Token: 36	3988	wmic.exe
Token: SeIncreaseQuotaPrivilege	3988	wmic.exe
Token: SeSecurityPrivilege	3988	wmic.exe
Token: SeTakeOwnershipPrivilege	3988	wmic.exe
Token: SeLoadDriverPrivilege	3988	wmic.exe
Token: SeSystemProfilePrivilege	3988	wmic.exe
Token: SeSystemtimePrivilege	3988	wmic.exe
Token: SeProfSingleProcessPrivilege	3988	wmic.exe
Token: SeIncBasePriorityPrivilege	3988	wmic.exe
Token: SeCreatePagefilePrivilege	3988	wmic.exe
Token: SeBackupPrivilege	3988	wmic.exe
Token: SeRestorePrivilege	3988	wmic.exe
Token: SeShutdownPrivilege	3988	wmic.exe
Token: SeDebugPrivilege	3988	wmic.exe
Token: SeSystemEnvironmentPrivilege	3988	wmic.exe
Token: SeRemoteShutdownPrivilege	3988	wmic.exe
Token: SeUndockPrivilege	3988	wmic.exe
Token: SeManageVolumePrivilege	3988	wmic.exe
Token: 33	3988	wmic.exe
Token: 34	3988	wmic.exe
Token: 35	3988	wmic.exe
Token: 36	3988	wmic.exe
Token: SeIncreaseQuotaPrivilege	3760	wmic.exe
Token: SeSecurityPrivilege	3760	wmic.exe
Token: SeTakeOwnershipPrivilege	3760	wmic.exe
Token: SeLoadDriverPrivilege	3760	wmic.exe
Token: SeSystemProfilePrivilege	3760	wmic.exe
Token: SeSystemtimePrivilege	3760	wmic.exe
Token: SeProfSingleProcessPrivilege	3760	wmic.exe
Token: SeIncBasePriorityPrivilege	3760	wmic.exe
Token: SeCreatePagefilePrivilege	3760	wmic.exe
Token: SeBackupPrivilege	3760	wmic.exe
Token: SeRestorePrivilege	3760	wmic.exe
Token: SeShutdownPrivilege	3760	wmic.exe
Token: SeDebugPrivilege	3760	wmic.exe
Token: SeSystemEnvironmentPrivilege	3760	wmic.exe
Token: SeRemoteShutdownPrivilege	3760	wmic.exe
Token: SeUndockPrivilege	3760	wmic.exe
Token: SeManageVolumePrivilege	3760	wmic.exe
Token: 33	3760	wmic.exe
Token: 34	3760	wmic.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4028 wrote to memory of 1460	4028	TOKEN BOT.exe	82
PID 4028 wrote to memory of 1460	4028	TOKEN BOT.exe	82
PID 4028 wrote to memory of 2908	4028	TOKEN BOT.exe	86
PID 4028 wrote to memory of 2908	4028	TOKEN BOT.exe	86
PID 4028 wrote to memory of 3988	4028	TOKEN BOT.exe	88
PID 4028 wrote to memory of 3988	4028	TOKEN BOT.exe	88
PID 4028 wrote to memory of 3760	4028	TOKEN BOT.exe	91
PID 4028 wrote to memory of 3760	4028	TOKEN BOT.exe	91
PID 4028 wrote to memory of 4376	4028	TOKEN BOT.exe	93
PID 4028 wrote to memory of 4376	4028	TOKEN BOT.exe	93
PID 4028 wrote to memory of 1548	4028	TOKEN BOT.exe	95
PID 4028 wrote to memory of 1548	4028	TOKEN BOT.exe	95
PID 4028 wrote to memory of 4756	4028	TOKEN BOT.exe	97
PID 4028 wrote to memory of 4756	4028	TOKEN BOT.exe	97

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:4028
- 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:1460
- 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:2908
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3988
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3760
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4376
- 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:1548
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4756

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
a43e653ffb5ab07940f4bdd9cc8fade4

SHA1
af43d04e3427f111b22dc891c5c7ee8a10ac4123

SHA256
c4c53abb13e99475aebfbe9fec7a8fead81c14c80d9dcc2b81375304f3a683fe

SHA512
62a97e95e1f19a8d4302847110dae44f469877eed6aa8ea22345c6eb25ee220e7d310fa0b7ec5df42356815421c0af7c46a0f1fee8933cc446641800eda6cd1b

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

Filesize
944B

MD5
05626d543357a7b9aab66738323d7ac6

SHA1
8a0366530637b0f977af59dde44fae4df8906f0f

SHA256
352265151df8fcc298bbbde14c4ddff51683a9a43416ce1987511ee7a27fa433

SHA512
11222b457bce9d25eca8b7f4768c5706ad117960d122bf049f94158725187fbaea86f38b3910402043f5a565dcc5faca535366880c0bd92f58a799931a32401d

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

Filesize
948B

MD5
c65738617888921a153bd9b1ef516ee7

SHA1
5245e71ea3c181d76320c857b639272ac9e079b1

SHA256
4640ba4001fd16a593315299cbdd4988dc2c7075820687f1018aac40aca95c26

SHA512
2e2a0ebd93f9d8dd07a7599054bce232683e9add9a35e77b584618040bcfd84a42545352519ec4736cc379002210b6f3ed2d905591c6925c0981b0392b495bfa

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jp00w02b.1vv.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1460-18-0x00007FFCE0910000-0x00007FFCE13D1000-memory.dmp

Filesize
10.8MB

Download
memory/1460-3-0x00007FFCE0910000-0x00007FFCE13D1000-memory.dmp

Filesize
10.8MB

Download
memory/1460-14-0x00007FFCE0910000-0x00007FFCE13D1000-memory.dmp

Filesize
10.8MB

Download
memory/1460-15-0x00007FFCE0910000-0x00007FFCE13D1000-memory.dmp

Filesize
10.8MB

Download
memory/1460-13-0x000002456FD30000-0x000002456FD52000-memory.dmp

Filesize
136KB

Download
memory/4028-32-0x00000113553F0000-0x0000011355466000-memory.dmp

Filesize
472KB

Download
memory/4028-2-0x00007FFCE0910000-0x00007FFCE13D1000-memory.dmp

Filesize
10.8MB

Download
memory/4028-1-0x00007FFCE0913000-0x00007FFCE0915000-memory.dmp

Filesize
8KB

Download
memory/4028-33-0x0000011355370000-0x00000113553C0000-memory.dmp

Filesize
320KB

Download
memory/4028-34-0x000001133C920000-0x000001133C93E000-memory.dmp

Filesize
120KB

Download
memory/4028-47-0x00000113553D0000-0x00000113553DA000-memory.dmp

Filesize
40KB

Download
memory/4028-48-0x0000011355650000-0x0000011355662000-memory.dmp

Filesize
72KB

Download
memory/4028-0-0x000001133AC80000-0x000001133ACC0000-memory.dmp

Filesize
256KB

Download
memory/4028-64-0x0000011355470000-0x0000011355619000-memory.dmp

Filesize
1.7MB

Download
memory/4028-65-0x00007FFCE0910000-0x00007FFCE13D1000-memory.dmp

Filesize
10.8MB

Download