umbral | e4310f76275772aa2a6d4aa393a18a07e1ddb91ef6f2018cba717ba3478af322

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
31-05-2024 17:16

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General

Target

incognito.exe
Size

229KB
MD5

a2e2e39f0f37c2bad057abd0d26da126
SHA1

644b65d488765656986b5f3607dac359e9955b27
SHA256

e4310f76275772aa2a6d4aa393a18a07e1ddb91ef6f2018cba717ba3478af322
SHA512

7be3fc42afae83211517c67cf9e1e87e463c5bffac89daac65f5b56353a29ab4a3a7573b6fa53c07357721ea980ce177c379dffe82967ba80ce8d0d298133e66
SSDEEP

6144:9loZM+rIkd8g+EtXHkv/iD46oX8syVtGDTOMdRYYhb8e1mjEi:foZtL+EP86oX8syVtGDTOMdRY4K

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/2604-0-0x000001F316950000-0x000001F316990000-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
3220	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	incognito.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
22	discord.com
23	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
5	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3784	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3164	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
2604	incognito.exe
3220	powershell.exe
3220	powershell.exe
2800	powershell.exe
2800	powershell.exe
400	powershell.exe
400	powershell.exe
2684	powershell.exe
2684	powershell.exe
4436	powershell.exe
4436	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2604	incognito.exe
Token: SeIncreaseQuotaPrivilege	2408	wmic.exe
Token: SeSecurityPrivilege	2408	wmic.exe
Token: SeTakeOwnershipPrivilege	2408	wmic.exe
Token: SeLoadDriverPrivilege	2408	wmic.exe
Token: SeSystemProfilePrivilege	2408	wmic.exe
Token: SeSystemtimePrivilege	2408	wmic.exe
Token: SeProfSingleProcessPrivilege	2408	wmic.exe
Token: SeIncBasePriorityPrivilege	2408	wmic.exe
Token: SeCreatePagefilePrivilege	2408	wmic.exe
Token: SeBackupPrivilege	2408	wmic.exe
Token: SeRestorePrivilege	2408	wmic.exe
Token: SeShutdownPrivilege	2408	wmic.exe
Token: SeDebugPrivilege	2408	wmic.exe
Token: SeSystemEnvironmentPrivilege	2408	wmic.exe
Token: SeRemoteShutdownPrivilege	2408	wmic.exe
Token: SeUndockPrivilege	2408	wmic.exe
Token: SeManageVolumePrivilege	2408	wmic.exe
Token: 33	2408	wmic.exe
Token: 34	2408	wmic.exe
Token: 35	2408	wmic.exe
Token: 36	2408	wmic.exe
Token: SeIncreaseQuotaPrivilege	2408	wmic.exe
Token: SeSecurityPrivilege	2408	wmic.exe
Token: SeTakeOwnershipPrivilege	2408	wmic.exe
Token: SeLoadDriverPrivilege	2408	wmic.exe
Token: SeSystemProfilePrivilege	2408	wmic.exe
Token: SeSystemtimePrivilege	2408	wmic.exe
Token: SeProfSingleProcessPrivilege	2408	wmic.exe
Token: SeIncBasePriorityPrivilege	2408	wmic.exe
Token: SeCreatePagefilePrivilege	2408	wmic.exe
Token: SeBackupPrivilege	2408	wmic.exe
Token: SeRestorePrivilege	2408	wmic.exe
Token: SeShutdownPrivilege	2408	wmic.exe
Token: SeDebugPrivilege	2408	wmic.exe
Token: SeSystemEnvironmentPrivilege	2408	wmic.exe
Token: SeRemoteShutdownPrivilege	2408	wmic.exe
Token: SeUndockPrivilege	2408	wmic.exe
Token: SeManageVolumePrivilege	2408	wmic.exe
Token: 33	2408	wmic.exe
Token: 34	2408	wmic.exe
Token: 35	2408	wmic.exe
Token: 36	2408	wmic.exe
Token: SeDebugPrivilege	3220	powershell.exe
Token: SeDebugPrivilege	2800	powershell.exe
Token: SeDebugPrivilege	400	powershell.exe
Token: SeDebugPrivilege	2684	powershell.exe
Token: SeIncreaseQuotaPrivilege	3652	wmic.exe
Token: SeSecurityPrivilege	3652	wmic.exe
Token: SeTakeOwnershipPrivilege	3652	wmic.exe
Token: SeLoadDriverPrivilege	3652	wmic.exe
Token: SeSystemProfilePrivilege	3652	wmic.exe
Token: SeSystemtimePrivilege	3652	wmic.exe
Token: SeProfSingleProcessPrivilege	3652	wmic.exe
Token: SeIncBasePriorityPrivilege	3652	wmic.exe
Token: SeCreatePagefilePrivilege	3652	wmic.exe
Token: SeBackupPrivilege	3652	wmic.exe
Token: SeRestorePrivilege	3652	wmic.exe
Token: SeShutdownPrivilege	3652	wmic.exe
Token: SeDebugPrivilege	3652	wmic.exe
Token: SeSystemEnvironmentPrivilege	3652	wmic.exe
Token: SeRemoteShutdownPrivilege	3652	wmic.exe
Token: SeUndockPrivilege	3652	wmic.exe
Token: SeManageVolumePrivilege	3652	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2604 wrote to memory of 2408	2604	incognito.exe	84
PID 2604 wrote to memory of 2408	2604	incognito.exe	84
PID 2604 wrote to memory of 2064	2604	incognito.exe	87
PID 2604 wrote to memory of 2064	2604	incognito.exe	87
PID 2604 wrote to memory of 3220	2604	incognito.exe	89
PID 2604 wrote to memory of 3220	2604	incognito.exe	89
PID 2604 wrote to memory of 2800	2604	incognito.exe	91
PID 2604 wrote to memory of 2800	2604	incognito.exe	91
PID 2604 wrote to memory of 400	2604	incognito.exe	93
PID 2604 wrote to memory of 400	2604	incognito.exe	93
PID 2604 wrote to memory of 2684	2604	incognito.exe	95
PID 2604 wrote to memory of 2684	2604	incognito.exe	95
PID 2604 wrote to memory of 3652	2604	incognito.exe	97
PID 2604 wrote to memory of 3652	2604	incognito.exe	97
PID 2604 wrote to memory of 3352	2604	incognito.exe	99
PID 2604 wrote to memory of 3352	2604	incognito.exe	99
PID 2604 wrote to memory of 384	2604	incognito.exe	101
PID 2604 wrote to memory of 384	2604	incognito.exe	101
PID 2604 wrote to memory of 4436	2604	incognito.exe	103
PID 2604 wrote to memory of 4436	2604	incognito.exe	103
PID 2604 wrote to memory of 3784	2604	incognito.exe	105
PID 2604 wrote to memory of 3784	2604	incognito.exe	105
PID 2604 wrote to memory of 2412	2604	incognito.exe	109
PID 2604 wrote to memory of 2412	2604	incognito.exe	109
PID 2412 wrote to memory of 3164	2412	cmd.exe	111
PID 2412 wrote to memory of 3164	2412	cmd.exe	111

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2064	attrib.exe

C:\Users\Admin\AppData\Local\Temp\incognito.exe
"C:\Users\Admin\AppData\Local\Temp\incognito.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2604
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2408
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\incognito.exe"
  2⤵
  - Views/modifies file attributes
  PID:2064
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\incognito.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3220
- 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:2800
- 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:400
- 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:2684
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3652
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:3352
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:384
- 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:4436
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3784
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\incognito.exe" && pause
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2412
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:3164

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

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Remote System Discovery

T1018

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
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

Filesize
944B

MD5
6d42b6da621e8df5674e26b799c8e2aa

SHA1
ab3ce1327ea1eeedb987ec823d5e0cb146bafa48

SHA256
5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c

SHA512
53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

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\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
88be3bc8a7f90e3953298c0fdbec4d72

SHA1
f4969784ad421cc80ef45608727aacd0f6bf2e4b

SHA256
533c8470b41084e40c5660569ebbdb7496520d449629a235e8053e84025f348a

SHA512
4fce64e2dacddbc03314048fef1ce356ee2647c14733da121c23c65507eeb8d721d6b690ad5463319b364dc4fa95904ad6ab096907f32918e3406ef438a6ef7c

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

Filesize
1KB

MD5
23272afe282560b0a5abad03e415e79b

SHA1
d24997643237343f0db0d9ab70e445450c70c795

SHA256
b3e29a57ee8c2da3dd7df14e6fd34632246e41950f3efd9ce9d35f1797ece1c9

SHA512
bc013bbd6083ef858570cdcdc89f761177f298cc394a0acfc553b2decc61e056459a539037ed67af13c2c4851e20d8df92a1c23d3d0b818a2e585506f28053c4

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_egujdkpd.5qv.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2604-71-0x000001F331150000-0x000001F331162000-memory.dmp

Filesize
72KB

Download
memory/2604-70-0x000001F331040000-0x000001F33104A000-memory.dmp

Filesize
40KB

Download
memory/2604-90-0x00007FF82E9E0000-0x00007FF82F4A1000-memory.dmp

Filesize
10.8MB

Download
memory/2604-89-0x000001F331300000-0x000001F3314A9000-memory.dmp

Filesize
1.7MB

Download
memory/2604-32-0x000001F331080000-0x000001F3310F6000-memory.dmp

Filesize
472KB

Download
memory/2604-33-0x000001F331100000-0x000001F331150000-memory.dmp

Filesize
320KB

Download
memory/2604-34-0x000001F331000000-0x000001F33101E000-memory.dmp

Filesize
120KB

Download
memory/2604-1-0x00007FF82E9E3000-0x00007FF82E9E5000-memory.dmp

Filesize
8KB

Download
memory/2604-2-0x00007FF82E9E0000-0x00007FF82F4A1000-memory.dmp

Filesize
10.8MB

Download
memory/2604-0-0x000001F316950000-0x000001F316990000-memory.dmp

Filesize
256KB

Download
memory/3220-17-0x00007FF82E9E0000-0x00007FF82F4A1000-memory.dmp

Filesize
10.8MB

Download
memory/3220-3-0x000001D5CE5F0000-0x000001D5CE612000-memory.dmp

Filesize
136KB

Download
memory/3220-9-0x00007FF82E9E0000-0x00007FF82F4A1000-memory.dmp

Filesize
10.8MB

Download
memory/3220-10-0x00007FF82E9E0000-0x00007FF82F4A1000-memory.dmp

Filesize
10.8MB

Download