umbral | 65080b04dd095e82f027e05f0df8afd367f0b167d7400bf4e2e1626464166a02

Analysis

max time kernel
449s
max time network
1173s
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 18:00

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General

Target

token bot.exe
Size

229KB
MD5

9dc985d83754309760ae45747d8081c2
SHA1

b60e1c39ee8da20c5bdf1df501fab12fd45eaf50
SHA256

f3fdf0137c30af49a71a174e204795a0b96ef2a8a0a53fda4add34574f79005b
SHA512

d0908c5e493bd83cd58e73b715c9318cb6032bb388d7c6ffbdc75b4bb813e594153a57e2ecebbe0a2d1aa0513312be16886b08ad8b91fc590217838057a730cf
SSDEEP

6144:tloZM+rIkd8g+EtXHkv/iD4hYBSGELnsmd42X3WVzb8e1mzi:voZtL+EP8hYBSGELnsmd42X3WtB

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/2816-0-0x000001CF145E0000-0x000001CF14620000-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
2056	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
23	discord.com
22	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
18	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
320	wmic.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2056	powershell.exe
2056	powershell.exe
2652	powershell.exe
2652	powershell.exe
1204	powershell.exe
1204	powershell.exe
868	powershell.exe
868	powershell.exe
2856	powershell.exe
2856	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2816	token bot.exe
Token: SeDebugPrivilege	2056	powershell.exe
Token: SeDebugPrivilege	2652	powershell.exe
Token: SeDebugPrivilege	1204	powershell.exe
Token: SeDebugPrivilege	868	powershell.exe
Token: SeIncreaseQuotaPrivilege	2388	wmic.exe
Token: SeSecurityPrivilege	2388	wmic.exe
Token: SeTakeOwnershipPrivilege	2388	wmic.exe
Token: SeLoadDriverPrivilege	2388	wmic.exe
Token: SeSystemProfilePrivilege	2388	wmic.exe
Token: SeSystemtimePrivilege	2388	wmic.exe
Token: SeProfSingleProcessPrivilege	2388	wmic.exe
Token: SeIncBasePriorityPrivilege	2388	wmic.exe
Token: SeCreatePagefilePrivilege	2388	wmic.exe
Token: SeBackupPrivilege	2388	wmic.exe
Token: SeRestorePrivilege	2388	wmic.exe
Token: SeShutdownPrivilege	2388	wmic.exe
Token: SeDebugPrivilege	2388	wmic.exe
Token: SeSystemEnvironmentPrivilege	2388	wmic.exe
Token: SeRemoteShutdownPrivilege	2388	wmic.exe
Token: SeUndockPrivilege	2388	wmic.exe
Token: SeManageVolumePrivilege	2388	wmic.exe
Token: 33	2388	wmic.exe
Token: 34	2388	wmic.exe
Token: 35	2388	wmic.exe
Token: 36	2388	wmic.exe
Token: SeIncreaseQuotaPrivilege	2388	wmic.exe
Token: SeSecurityPrivilege	2388	wmic.exe
Token: SeTakeOwnershipPrivilege	2388	wmic.exe
Token: SeLoadDriverPrivilege	2388	wmic.exe
Token: SeSystemProfilePrivilege	2388	wmic.exe
Token: SeSystemtimePrivilege	2388	wmic.exe
Token: SeProfSingleProcessPrivilege	2388	wmic.exe
Token: SeIncBasePriorityPrivilege	2388	wmic.exe
Token: SeCreatePagefilePrivilege	2388	wmic.exe
Token: SeBackupPrivilege	2388	wmic.exe
Token: SeRestorePrivilege	2388	wmic.exe
Token: SeShutdownPrivilege	2388	wmic.exe
Token: SeDebugPrivilege	2388	wmic.exe
Token: SeSystemEnvironmentPrivilege	2388	wmic.exe
Token: SeRemoteShutdownPrivilege	2388	wmic.exe
Token: SeUndockPrivilege	2388	wmic.exe
Token: SeManageVolumePrivilege	2388	wmic.exe
Token: 33	2388	wmic.exe
Token: 34	2388	wmic.exe
Token: 35	2388	wmic.exe
Token: 36	2388	wmic.exe
Token: SeIncreaseQuotaPrivilege	528	wmic.exe
Token: SeSecurityPrivilege	528	wmic.exe
Token: SeTakeOwnershipPrivilege	528	wmic.exe
Token: SeLoadDriverPrivilege	528	wmic.exe
Token: SeSystemProfilePrivilege	528	wmic.exe
Token: SeSystemtimePrivilege	528	wmic.exe
Token: SeProfSingleProcessPrivilege	528	wmic.exe
Token: SeIncBasePriorityPrivilege	528	wmic.exe
Token: SeCreatePagefilePrivilege	528	wmic.exe
Token: SeBackupPrivilege	528	wmic.exe
Token: SeRestorePrivilege	528	wmic.exe
Token: SeShutdownPrivilege	528	wmic.exe
Token: SeDebugPrivilege	528	wmic.exe
Token: SeSystemEnvironmentPrivilege	528	wmic.exe
Token: SeRemoteShutdownPrivilege	528	wmic.exe
Token: SeUndockPrivilege	528	wmic.exe
Token: SeManageVolumePrivilege	528	wmic.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2816 wrote to memory of 2056	2816	token bot.exe	81
PID 2816 wrote to memory of 2056	2816	token bot.exe	81
PID 2816 wrote to memory of 2652	2816	token bot.exe	86
PID 2816 wrote to memory of 2652	2816	token bot.exe	86
PID 2816 wrote to memory of 1204	2816	token bot.exe	88
PID 2816 wrote to memory of 1204	2816	token bot.exe	88
PID 2816 wrote to memory of 868	2816	token bot.exe	90
PID 2816 wrote to memory of 868	2816	token bot.exe	90
PID 2816 wrote to memory of 2388	2816	token bot.exe	92
PID 2816 wrote to memory of 2388	2816	token bot.exe	92
PID 2816 wrote to memory of 528	2816	token bot.exe	95
PID 2816 wrote to memory of 528	2816	token bot.exe	95
PID 2816 wrote to memory of 4364	2816	token bot.exe	97
PID 2816 wrote to memory of 4364	2816	token bot.exe	97
PID 2816 wrote to memory of 2856	2816	token bot.exe	99
PID 2816 wrote to memory of 2856	2816	token bot.exe	99
PID 2816 wrote to memory of 320	2816	token bot.exe	101
PID 2816 wrote to memory of 320	2816	token bot.exe	101

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:2816
- 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:2056
- 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:2652
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1204
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:868
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2388
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:528
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4364
- 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:2856
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:320

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
71fa55c67a762ba70e40011153e19b3c

SHA1
a36d2bb4802a8ec7db1a68de5f0c3d6007987492

SHA256
b8be6896ca89d3ebe9ee8a94e3407483f4750badaf7fa33526817cfc926dc291

SHA512
32760af7c05e20fec8cbddf56c2df544a69335f930f1d313cd1fdceaa90ed2afe81e54ac1b6770097d6f5ca5f30955f95970171a453579aa19239a17aaefe47f

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

Filesize
944B

MD5
c67d20463454cbe08d7cf5270b6783d0

SHA1
79de1f9eb55910cfaba59537fbfc457b7a6bc5e2

SHA256
efa29ca5393e2434c431df14860ef828ff59ae0d9c7409bf3c758c84eb02d007

SHA512
d839d3e85bcf18b4371060f15b2d4cb9ee3988fc52070c8012a01b7d164b00f6b3c636b29ce8b664e02ce2566242b9d6b2c2e315b698fb7b2b18d69e39f1a502

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

Filesize
948B

MD5
f4bf3ca8753d6bb9725419fec1ec74b9

SHA1
71fce9d17d1d92873236a9a827c52eb9e4827f3d

SHA256
ca8697e4ada4c3d4aac2899b8aad4052ccd605fccee05ee0a831368bde2f7417

SHA512
a55a107ae8bcf833ea674413c765cd55096146c9634dff41884fcc851c12fe47753308099525c99ae44883facfb668c8b292dd915263f34ebd1190391cb28a54

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

Filesize
1KB

MD5
d3235ed022a42ec4338123ab87144afa

SHA1
5058608bc0deb720a585a2304a8f7cf63a50a315

SHA256
10663f5a1cb0afe5578f61ebaae2aafb363544e47b48521f9c23be9e6e431b27

SHA512
236761b7c68feca8bd62cba90cff0b25fac5613837aaa5d29ae823ace8b06a2057553cf7e72b11ccc59b6c289e471ca1bbac1a880aef5e2868875371a17c1abf

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

Filesize
1KB

MD5
063fa26d779f114734bd9130125608c3

SHA1
3a1b8fb1a319f6c40a71b117d6b07106d2a53857

SHA256
e8f8cb3e295999c4b311836d5fe1213b4721d56ab14af3eacd1bcdd051b5a66b

SHA512
fbe868cad1196fa3630581f269e8c512af1ed7b1d1e5708c369ed28810d37e48301370f19260657f47a560165113d28437741db39b91aaff69776143598b4391

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vlvezdvz.kl4.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2056-12-0x00007FFF37220000-0x00007FFF37CE1000-memory.dmp

Filesize
10.8MB

Download
memory/2056-13-0x000001B68A730000-0x000001B68A752000-memory.dmp

Filesize
136KB

Download
memory/2056-14-0x00007FFF37220000-0x00007FFF37CE1000-memory.dmp

Filesize
10.8MB

Download
memory/2056-15-0x00007FFF37220000-0x00007FFF37CE1000-memory.dmp

Filesize
10.8MB

Download
memory/2056-18-0x00007FFF37220000-0x00007FFF37CE1000-memory.dmp

Filesize
10.8MB

Download
memory/2816-33-0x000001CF2EAA0000-0x000001CF2EAF0000-memory.dmp

Filesize
320KB

Download
memory/2816-32-0x000001CF2ED80000-0x000001CF2EDF6000-memory.dmp

Filesize
472KB

Download
memory/2816-34-0x000001CF2EA50000-0x000001CF2EA6E000-memory.dmp

Filesize
120KB

Download
memory/2816-0-0x000001CF145E0000-0x000001CF14620000-memory.dmp

Filesize
256KB

Download
memory/2816-1-0x00007FFF37223000-0x00007FFF37225000-memory.dmp

Filesize
8KB

Download
memory/2816-69-0x000001CF2EA80000-0x000001CF2EA8A000-memory.dmp

Filesize
40KB

Download
memory/2816-70-0x000001CF2EB10000-0x000001CF2EB22000-memory.dmp

Filesize
72KB

Download
memory/2816-2-0x00007FFF37220000-0x00007FFF37CE1000-memory.dmp

Filesize
10.8MB

Download
memory/2816-86-0x00007FFF37220000-0x00007FFF37CE1000-memory.dmp

Filesize
10.8MB

Download