umbral | 1563b6bc82b3606302ccfc90be5068858eaa4d7a9544fe67b2500228c707c992

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
25-12-2024 16:55

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

PesmobileGen.exe
Size

231KB
MD5

f55b6dd676bb7064d38a1eaac5b08f69
SHA1

f772349cd296f12d6399fc613c0c898696ac89a7
SHA256

1563b6bc82b3606302ccfc90be5068858eaa4d7a9544fe67b2500228c707c992
SHA512

251ddb5bcb67ae9e3699c237e49452afcc7335e12eae14fb2b5834b847fec3be980ba9c05f1568dad35e84245f157c9a67ee7b5551e7bfbeb6b1ea086966851f
SSDEEP

6144:xloZM+rIkd8g+EtXHkv/iD4EMzNkqNlOQLWU1pAzg3b8e1mei:DoZdL+EP8EMzNkqNlOQLWU1pAzmM

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/560-1-0x00000223A9EE0000-0x00000223A9F20000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Umbral family
umbral

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3540	powershell.exe
2460	powershell.exe
1604	powershell.exe
3632	powershell.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
21	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
2112	wmic.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
3632	powershell.exe
3632	powershell.exe
3540	powershell.exe
3540	powershell.exe
2460	powershell.exe
2460	powershell.exe
472	powershell.exe
472	powershell.exe
1604	powershell.exe
1604	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	560	PesmobileGen.exe
Token: SeDebugPrivilege	3632	powershell.exe
Token: SeDebugPrivilege	3540	powershell.exe
Token: SeDebugPrivilege	2460	powershell.exe
Token: SeDebugPrivilege	472	powershell.exe
Token: SeIncreaseQuotaPrivilege	2800	wmic.exe
Token: SeSecurityPrivilege	2800	wmic.exe
Token: SeTakeOwnershipPrivilege	2800	wmic.exe
Token: SeLoadDriverPrivilege	2800	wmic.exe
Token: SeSystemProfilePrivilege	2800	wmic.exe
Token: SeSystemtimePrivilege	2800	wmic.exe
Token: SeProfSingleProcessPrivilege	2800	wmic.exe
Token: SeIncBasePriorityPrivilege	2800	wmic.exe
Token: SeCreatePagefilePrivilege	2800	wmic.exe
Token: SeBackupPrivilege	2800	wmic.exe
Token: SeRestorePrivilege	2800	wmic.exe
Token: SeShutdownPrivilege	2800	wmic.exe
Token: SeDebugPrivilege	2800	wmic.exe
Token: SeSystemEnvironmentPrivilege	2800	wmic.exe
Token: SeRemoteShutdownPrivilege	2800	wmic.exe
Token: SeUndockPrivilege	2800	wmic.exe
Token: SeManageVolumePrivilege	2800	wmic.exe
Token: 33	2800	wmic.exe
Token: 34	2800	wmic.exe
Token: 35	2800	wmic.exe
Token: 36	2800	wmic.exe
Token: SeIncreaseQuotaPrivilege	2800	wmic.exe
Token: SeSecurityPrivilege	2800	wmic.exe
Token: SeTakeOwnershipPrivilege	2800	wmic.exe
Token: SeLoadDriverPrivilege	2800	wmic.exe
Token: SeSystemProfilePrivilege	2800	wmic.exe
Token: SeSystemtimePrivilege	2800	wmic.exe
Token: SeProfSingleProcessPrivilege	2800	wmic.exe
Token: SeIncBasePriorityPrivilege	2800	wmic.exe
Token: SeCreatePagefilePrivilege	2800	wmic.exe
Token: SeBackupPrivilege	2800	wmic.exe
Token: SeRestorePrivilege	2800	wmic.exe
Token: SeShutdownPrivilege	2800	wmic.exe
Token: SeDebugPrivilege	2800	wmic.exe
Token: SeSystemEnvironmentPrivilege	2800	wmic.exe
Token: SeRemoteShutdownPrivilege	2800	wmic.exe
Token: SeUndockPrivilege	2800	wmic.exe
Token: SeManageVolumePrivilege	2800	wmic.exe
Token: 33	2800	wmic.exe
Token: 34	2800	wmic.exe
Token: 35	2800	wmic.exe
Token: 36	2800	wmic.exe
Token: SeIncreaseQuotaPrivilege	644	wmic.exe
Token: SeSecurityPrivilege	644	wmic.exe
Token: SeTakeOwnershipPrivilege	644	wmic.exe
Token: SeLoadDriverPrivilege	644	wmic.exe
Token: SeSystemProfilePrivilege	644	wmic.exe
Token: SeSystemtimePrivilege	644	wmic.exe
Token: SeProfSingleProcessPrivilege	644	wmic.exe
Token: SeIncBasePriorityPrivilege	644	wmic.exe
Token: SeCreatePagefilePrivilege	644	wmic.exe
Token: SeBackupPrivilege	644	wmic.exe
Token: SeRestorePrivilege	644	wmic.exe
Token: SeShutdownPrivilege	644	wmic.exe
Token: SeDebugPrivilege	644	wmic.exe
Token: SeSystemEnvironmentPrivilege	644	wmic.exe
Token: SeRemoteShutdownPrivilege	644	wmic.exe
Token: SeUndockPrivilege	644	wmic.exe
Token: SeManageVolumePrivilege	644	wmic.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 560 wrote to memory of 3632	560	PesmobileGen.exe	83
PID 560 wrote to memory of 3632	560	PesmobileGen.exe	83
PID 560 wrote to memory of 3540	560	PesmobileGen.exe	85
PID 560 wrote to memory of 3540	560	PesmobileGen.exe	85
PID 560 wrote to memory of 2460	560	PesmobileGen.exe	87
PID 560 wrote to memory of 2460	560	PesmobileGen.exe	87
PID 560 wrote to memory of 472	560	PesmobileGen.exe	89
PID 560 wrote to memory of 472	560	PesmobileGen.exe	89
PID 560 wrote to memory of 2800	560	PesmobileGen.exe	91
PID 560 wrote to memory of 2800	560	PesmobileGen.exe	91
PID 560 wrote to memory of 644	560	PesmobileGen.exe	94
PID 560 wrote to memory of 644	560	PesmobileGen.exe	94
PID 560 wrote to memory of 2008	560	PesmobileGen.exe	96
PID 560 wrote to memory of 2008	560	PesmobileGen.exe	96
PID 560 wrote to memory of 1604	560	PesmobileGen.exe	98
PID 560 wrote to memory of 1604	560	PesmobileGen.exe	98
PID 560 wrote to memory of 2112	560	PesmobileGen.exe	100
PID 560 wrote to memory of 2112	560	PesmobileGen.exe	100

C:\Users\Admin\AppData\Local\Temp\PesmobileGen.exe
"C:\Users\Admin\AppData\Local\Temp\PesmobileGen.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:560
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\PesmobileGen.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3632
- 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⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3540
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2460
- 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:472
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2800
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:644
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2008
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:1604
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2112

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

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

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

Loading Replay Monitor...

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
2e907f77659a6601fcc408274894da2e

SHA1
9f5b72abef1cd7145bf37547cdb1b9254b4efe9d

SHA256
385da35673330e21ac02545220552fe301fe54dedefbdafc097ac4342a295233

SHA512
34fa0fff24f6550f55f828541aaefe5d75c86f8f0842d54b50065e9746f9662bb7209c74c9a9571540b9855bb3851f01db613190024e89b198d485bb5dc07721

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

Filesize
948B

MD5
47aec0ae6e0dfab5f91c35cd65d2c56a

SHA1
0bbe13618bdc0c402539cdfca81471aa501f5cad

SHA256
8f31385012b247db2cc50ecb164208fbbf5f8cdf7bfc951e8c2c8ad5fb04cf0b

SHA512
c4b7184a85c1d594012ba86390e651439d6cae63c76b94432faaaea410e4ef9bc62d88e68adf8f3abbe36e18ef9e4dc46c3e31a0d72089f98a22f04c8b4a8f12

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

Filesize
1KB

MD5
276798eeb29a49dc6e199768bc9c2e71

SHA1
5fdc8ccb897ac2df7476fbb07517aca5b7a6205b

SHA256
cd0a1056e8f1b6cb5cb328532239d802f4e2aa8f8fcdc0fcb487684bd68e0dcc

SHA512
0d34fce64bbefc57d64fa6e03ca886952263d5f24df9c1c4cce6a1e8f5a47a9a21e9820f8d38caa7f7b43a52336ce00b738ea18419aaa7c788b72e04ce19e4f2

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

Filesize
1KB

MD5
45ad40f012b09e141955482368549640

SHA1
3f9cd15875c1e397c3b2b5592805577ae88a96cb

SHA256
ea3b59172f1a33677f9cb3843fb4d6093b806d3a7cf2f3c6d4692f5421f656ce

SHA512
3de08f8affca1c1450088f560776cf3d65146cadac43c06eb922c7b3cea436e519966cf38458303ffeb1a58c53f8952cffda6c34216fda7594e014b516e83b33

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_i0gbjsum.tnd.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/560-72-0x00000223C4710000-0x00000223C4722000-memory.dmp

Filesize
72KB

Download
memory/560-0-0x00007FF95AA93000-0x00007FF95AA95000-memory.dmp

Filesize
8KB

Download
memory/560-94-0x00007FF95AA90000-0x00007FF95B551000-memory.dmp

Filesize
10.8MB

Download
memory/560-93-0x00000223C47F0000-0x00000223C4999000-memory.dmp

Filesize
1.7MB

Download
memory/560-2-0x00007FF95AA90000-0x00007FF95B551000-memory.dmp

Filesize
10.8MB

Download
memory/560-1-0x00000223A9EE0000-0x00000223A9F20000-memory.dmp

Filesize
256KB

Download
memory/560-32-0x00000223C4610000-0x00000223C4686000-memory.dmp

Filesize
472KB

Download
memory/560-33-0x00000223C45C0000-0x00000223C4610000-memory.dmp

Filesize
320KB

Download
memory/560-34-0x00000223C46B0000-0x00000223C46CE000-memory.dmp

Filesize
120KB

Download
memory/560-88-0x00007FF95AA93000-0x00007FF95AA95000-memory.dmp

Filesize
8KB

Download
memory/560-71-0x00000223C46D0000-0x00000223C46DA000-memory.dmp

Filesize
40KB

Download
memory/3632-14-0x00007FF95AA90000-0x00007FF95B551000-memory.dmp

Filesize
10.8MB

Download
memory/3632-13-0x00007FF95AA90000-0x00007FF95B551000-memory.dmp

Filesize
10.8MB

Download
memory/3632-11-0x000001ACD7C30000-0x000001ACD7C52000-memory.dmp

Filesize
136KB

Download
memory/3632-15-0x00007FF95AA90000-0x00007FF95B551000-memory.dmp

Filesize
10.8MB

Download
memory/3632-19-0x00007FF95AA90000-0x00007FF95B551000-memory.dmp

Filesize
10.8MB

Download
memory/3632-18-0x000001ACD78E0000-0x000001ACD7AFC000-memory.dmp

Filesize
2.1MB

Download