umbral | 6afc8f233e1d02de92ab0dad9bb3724ab5b868c5ca59cfd52df6bc384ae1cf36

Analysis

max time kernel
1565s
max time network
1566s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-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
behavioral1/memory/2792-1-0x0000000001010000-0x0000000001050000-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
2644	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
1552	wmic.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2644	powershell.exe
2692	powershell.exe
2184	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2792	TOKEN BOT.exe
Token: SeDebugPrivilege	2644	powershell.exe
Token: SeDebugPrivilege	2692	powershell.exe
Token: SeIncreaseQuotaPrivilege	2876	wmic.exe
Token: SeSecurityPrivilege	2876	wmic.exe
Token: SeTakeOwnershipPrivilege	2876	wmic.exe
Token: SeLoadDriverPrivilege	2876	wmic.exe
Token: SeSystemProfilePrivilege	2876	wmic.exe
Token: SeSystemtimePrivilege	2876	wmic.exe
Token: SeProfSingleProcessPrivilege	2876	wmic.exe
Token: SeIncBasePriorityPrivilege	2876	wmic.exe
Token: SeCreatePagefilePrivilege	2876	wmic.exe
Token: SeBackupPrivilege	2876	wmic.exe
Token: SeRestorePrivilege	2876	wmic.exe
Token: SeShutdownPrivilege	2876	wmic.exe
Token: SeDebugPrivilege	2876	wmic.exe
Token: SeSystemEnvironmentPrivilege	2876	wmic.exe
Token: SeRemoteShutdownPrivilege	2876	wmic.exe
Token: SeUndockPrivilege	2876	wmic.exe
Token: SeManageVolumePrivilege	2876	wmic.exe
Token: 33	2876	wmic.exe
Token: 34	2876	wmic.exe
Token: 35	2876	wmic.exe
Token: SeIncreaseQuotaPrivilege	2876	wmic.exe
Token: SeSecurityPrivilege	2876	wmic.exe
Token: SeTakeOwnershipPrivilege	2876	wmic.exe
Token: SeLoadDriverPrivilege	2876	wmic.exe
Token: SeSystemProfilePrivilege	2876	wmic.exe
Token: SeSystemtimePrivilege	2876	wmic.exe
Token: SeProfSingleProcessPrivilege	2876	wmic.exe
Token: SeIncBasePriorityPrivilege	2876	wmic.exe
Token: SeCreatePagefilePrivilege	2876	wmic.exe
Token: SeBackupPrivilege	2876	wmic.exe
Token: SeRestorePrivilege	2876	wmic.exe
Token: SeShutdownPrivilege	2876	wmic.exe
Token: SeDebugPrivilege	2876	wmic.exe
Token: SeSystemEnvironmentPrivilege	2876	wmic.exe
Token: SeRemoteShutdownPrivilege	2876	wmic.exe
Token: SeUndockPrivilege	2876	wmic.exe
Token: SeManageVolumePrivilege	2876	wmic.exe
Token: 33	2876	wmic.exe
Token: 34	2876	wmic.exe
Token: 35	2876	wmic.exe
Token: SeIncreaseQuotaPrivilege	2592	wmic.exe
Token: SeSecurityPrivilege	2592	wmic.exe
Token: SeTakeOwnershipPrivilege	2592	wmic.exe
Token: SeLoadDriverPrivilege	2592	wmic.exe
Token: SeSystemProfilePrivilege	2592	wmic.exe
Token: SeSystemtimePrivilege	2592	wmic.exe
Token: SeProfSingleProcessPrivilege	2592	wmic.exe
Token: SeIncBasePriorityPrivilege	2592	wmic.exe
Token: SeCreatePagefilePrivilege	2592	wmic.exe
Token: SeBackupPrivilege	2592	wmic.exe
Token: SeRestorePrivilege	2592	wmic.exe
Token: SeShutdownPrivilege	2592	wmic.exe
Token: SeDebugPrivilege	2592	wmic.exe
Token: SeSystemEnvironmentPrivilege	2592	wmic.exe
Token: SeRemoteShutdownPrivilege	2592	wmic.exe
Token: SeUndockPrivilege	2592	wmic.exe
Token: SeManageVolumePrivilege	2592	wmic.exe
Token: 33	2592	wmic.exe
Token: 34	2592	wmic.exe
Token: 35	2592	wmic.exe
Token: SeIncreaseQuotaPrivilege	2592	wmic.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2792 wrote to memory of 2644	2792	TOKEN BOT.exe	28
PID 2792 wrote to memory of 2644	2792	TOKEN BOT.exe	28
PID 2792 wrote to memory of 2644	2792	TOKEN BOT.exe	28
PID 2792 wrote to memory of 2692	2792	TOKEN BOT.exe	30
PID 2792 wrote to memory of 2692	2792	TOKEN BOT.exe	30
PID 2792 wrote to memory of 2692	2792	TOKEN BOT.exe	30
PID 2792 wrote to memory of 2876	2792	TOKEN BOT.exe	32
PID 2792 wrote to memory of 2876	2792	TOKEN BOT.exe	32
PID 2792 wrote to memory of 2876	2792	TOKEN BOT.exe	32
PID 2792 wrote to memory of 2592	2792	TOKEN BOT.exe	35
PID 2792 wrote to memory of 2592	2792	TOKEN BOT.exe	35
PID 2792 wrote to memory of 2592	2792	TOKEN BOT.exe	35
PID 2792 wrote to memory of 2756	2792	TOKEN BOT.exe	37
PID 2792 wrote to memory of 2756	2792	TOKEN BOT.exe	37
PID 2792 wrote to memory of 2756	2792	TOKEN BOT.exe	37
PID 2792 wrote to memory of 2184	2792	TOKEN BOT.exe	39
PID 2792 wrote to memory of 2184	2792	TOKEN BOT.exe	39
PID 2792 wrote to memory of 2184	2792	TOKEN BOT.exe	39
PID 2792 wrote to memory of 1552	2792	TOKEN BOT.exe	41
PID 2792 wrote to memory of 1552	2792	TOKEN BOT.exe	41
PID 2792 wrote to memory of 1552	2792	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:2792
- 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:2644
- 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:2692
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2876
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2592
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2756
- 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:2184
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1552

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
1⤵
PID:1340

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\MY47SOA1A7Q2N3782NTN.temp

Filesize
7KB

MD5
07931a2700568a0e061ff78c59486a2e

SHA1
bc6379bc7e6810f4f2f4e820f87e218755f38beb

SHA256
896ad26d241423d5b0c6d5e9d66b7d51fb8743731c5657e4695cf170e5a2e445

SHA512
7d688838d48a91022e8e75be8d6c1ec7a49d8ee77f3ee08023fcec325540479a8ca2fe57e4f53d336c06a841682905053d1c0f8840be1faf1c0f0a0f7246ee9f

Download Submit
memory/2184-34-0x000000001B650000-0x000000001B932000-memory.dmp

Filesize
2.9MB

Download
memory/2644-8-0x000000001B760000-0x000000001BA42000-memory.dmp

Filesize
2.9MB

Download
memory/2644-9-0x0000000001DF0000-0x0000000001DF8000-memory.dmp

Filesize
32KB

Download
memory/2644-12-0x000007FEEE250000-0x000007FEEEBED000-memory.dmp

Filesize
9.6MB

Download
memory/2644-11-0x0000000002C8B000-0x0000000002CF2000-memory.dmp

Filesize
412KB

Download
memory/2644-10-0x0000000002C84000-0x0000000002C87000-memory.dmp

Filesize
12KB

Download
memory/2644-7-0x000007FEEE50E000-0x000007FEEE50F000-memory.dmp

Filesize
4KB

Download
memory/2644-38-0x000007FEEE250000-0x000007FEEEBED000-memory.dmp

Filesize
9.6MB

Download
memory/2692-18-0x000000001B8F0000-0x000000001BBD2000-memory.dmp

Filesize
2.9MB

Download
memory/2692-19-0x0000000001D20000-0x0000000001D28000-memory.dmp

Filesize
32KB

Download
memory/2792-0-0x000007FEF5783000-0x000007FEF5784000-memory.dmp

Filesize
4KB

Download
memory/2792-2-0x000007FEF5780000-0x000007FEF616C000-memory.dmp

Filesize
9.9MB

Download
memory/2792-1-0x0000000001010000-0x0000000001050000-memory.dmp

Filesize
256KB

Download
memory/2792-37-0x000007FEF5780000-0x000007FEF616C000-memory.dmp

Filesize
9.9MB

Download