umbral | 91a8f24b813ec8f33e1222a9996cdfe5c4c0dd56cb922a113a87953878b065a9

Analysis

max time kernel
134s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
30-07-2024 03:45

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

GeforceChair0.22.exe
Size

231KB
MD5

4889fe4c6bc9c53e9e53983517727fa8
SHA1

3964bac164a7cdc3a0cddd46f8d3aab5e568b515
SHA256

91a8f24b813ec8f33e1222a9996cdfe5c4c0dd56cb922a113a87953878b065a9
SHA512

f44368d7406db49db31b13f578e968a053e100d49cd2dbf05dabe3a4f3e9412e8fd2ce6ac0c363f34091f5e7af78769ca0cc1b6020f7e8e9a313813a575c7100
SSDEEP

6144:BloZM0rIkd8g+EtXHkv/iD4i/QClL8e1m+cOi:zoZDL+EP8IpHE

Score

10^/10

umbral credential_access execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/3564-0-0x0000027C4BED0000-0x0000027C4BF10000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2912	powershell.exe
1380	powershell.exe
1696	powershell.exe
2388	powershell.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
26	discord.com
27	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
8	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1516	wmic.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
3564	GeforceChair0.22.exe
2912	powershell.exe
2912	powershell.exe
1380	powershell.exe
1380	powershell.exe
1696	powershell.exe
1696	powershell.exe
536	powershell.exe
536	powershell.exe
2388	powershell.exe
2388	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3564	GeforceChair0.22.exe
Token: SeIncreaseQuotaPrivilege	2288	wmic.exe
Token: SeSecurityPrivilege	2288	wmic.exe
Token: SeTakeOwnershipPrivilege	2288	wmic.exe
Token: SeLoadDriverPrivilege	2288	wmic.exe
Token: SeSystemProfilePrivilege	2288	wmic.exe
Token: SeSystemtimePrivilege	2288	wmic.exe
Token: SeProfSingleProcessPrivilege	2288	wmic.exe
Token: SeIncBasePriorityPrivilege	2288	wmic.exe
Token: SeCreatePagefilePrivilege	2288	wmic.exe
Token: SeBackupPrivilege	2288	wmic.exe
Token: SeRestorePrivilege	2288	wmic.exe
Token: SeShutdownPrivilege	2288	wmic.exe
Token: SeDebugPrivilege	2288	wmic.exe
Token: SeSystemEnvironmentPrivilege	2288	wmic.exe
Token: SeRemoteShutdownPrivilege	2288	wmic.exe
Token: SeUndockPrivilege	2288	wmic.exe
Token: SeManageVolumePrivilege	2288	wmic.exe
Token: 33	2288	wmic.exe
Token: 34	2288	wmic.exe
Token: 35	2288	wmic.exe
Token: 36	2288	wmic.exe
Token: SeIncreaseQuotaPrivilege	2288	wmic.exe
Token: SeSecurityPrivilege	2288	wmic.exe
Token: SeTakeOwnershipPrivilege	2288	wmic.exe
Token: SeLoadDriverPrivilege	2288	wmic.exe
Token: SeSystemProfilePrivilege	2288	wmic.exe
Token: SeSystemtimePrivilege	2288	wmic.exe
Token: SeProfSingleProcessPrivilege	2288	wmic.exe
Token: SeIncBasePriorityPrivilege	2288	wmic.exe
Token: SeCreatePagefilePrivilege	2288	wmic.exe
Token: SeBackupPrivilege	2288	wmic.exe
Token: SeRestorePrivilege	2288	wmic.exe
Token: SeShutdownPrivilege	2288	wmic.exe
Token: SeDebugPrivilege	2288	wmic.exe
Token: SeSystemEnvironmentPrivilege	2288	wmic.exe
Token: SeRemoteShutdownPrivilege	2288	wmic.exe
Token: SeUndockPrivilege	2288	wmic.exe
Token: SeManageVolumePrivilege	2288	wmic.exe
Token: 33	2288	wmic.exe
Token: 34	2288	wmic.exe
Token: 35	2288	wmic.exe
Token: 36	2288	wmic.exe
Token: SeDebugPrivilege	2912	powershell.exe
Token: SeDebugPrivilege	1380	powershell.exe
Token: SeDebugPrivilege	1696	powershell.exe
Token: SeDebugPrivilege	536	powershell.exe
Token: SeIncreaseQuotaPrivilege	224	wmic.exe
Token: SeSecurityPrivilege	224	wmic.exe
Token: SeTakeOwnershipPrivilege	224	wmic.exe
Token: SeLoadDriverPrivilege	224	wmic.exe
Token: SeSystemProfilePrivilege	224	wmic.exe
Token: SeSystemtimePrivilege	224	wmic.exe
Token: SeProfSingleProcessPrivilege	224	wmic.exe
Token: SeIncBasePriorityPrivilege	224	wmic.exe
Token: SeCreatePagefilePrivilege	224	wmic.exe
Token: SeBackupPrivilege	224	wmic.exe
Token: SeRestorePrivilege	224	wmic.exe
Token: SeShutdownPrivilege	224	wmic.exe
Token: SeDebugPrivilege	224	wmic.exe
Token: SeSystemEnvironmentPrivilege	224	wmic.exe
Token: SeRemoteShutdownPrivilege	224	wmic.exe
Token: SeUndockPrivilege	224	wmic.exe
Token: SeManageVolumePrivilege	224	wmic.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 3564 wrote to memory of 2288	3564	GeforceChair0.22.exe	84
PID 3564 wrote to memory of 2288	3564	GeforceChair0.22.exe	84
PID 3564 wrote to memory of 2912	3564	GeforceChair0.22.exe	92
PID 3564 wrote to memory of 2912	3564	GeforceChair0.22.exe	92
PID 3564 wrote to memory of 1380	3564	GeforceChair0.22.exe	95
PID 3564 wrote to memory of 1380	3564	GeforceChair0.22.exe	95
PID 3564 wrote to memory of 1696	3564	GeforceChair0.22.exe	97
PID 3564 wrote to memory of 1696	3564	GeforceChair0.22.exe	97
PID 3564 wrote to memory of 536	3564	GeforceChair0.22.exe	99
PID 3564 wrote to memory of 536	3564	GeforceChair0.22.exe	99
PID 3564 wrote to memory of 224	3564	GeforceChair0.22.exe	101
PID 3564 wrote to memory of 224	3564	GeforceChair0.22.exe	101
PID 3564 wrote to memory of 4560	3564	GeforceChair0.22.exe	103
PID 3564 wrote to memory of 4560	3564	GeforceChair0.22.exe	103
PID 3564 wrote to memory of 1156	3564	GeforceChair0.22.exe	105
PID 3564 wrote to memory of 1156	3564	GeforceChair0.22.exe	105
PID 3564 wrote to memory of 2388	3564	GeforceChair0.22.exe	107
PID 3564 wrote to memory of 2388	3564	GeforceChair0.22.exe	107
PID 3564 wrote to memory of 1516	3564	GeforceChair0.22.exe	109
PID 3564 wrote to memory of 1516	3564	GeforceChair0.22.exe	109

C:\Users\Admin\AppData\Local\Temp\GeforceChair0.22.exe
"C:\Users\Admin\AppData\Local\Temp\GeforceChair0.22.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3564
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2288
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\GeforceChair0.22.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2912
- 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:1380
- 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:1696
- 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:536
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:224
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:4560
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1156
- 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:2388
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1516

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
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
af125c295a4eb2195f26c8ed6063a673

SHA1
677b1fc2131d12976968250f1fd8036fb65d7f49

SHA256
e04b803798ed80ff548179d82e18398c29d845245135ad0042c73bcbed42f349

SHA512
e2002b0b1f5cf1e9b20b44f5c0c373eff5edde379b7b6640438f3e37057bd547056fdbcac1f68ba9a7bfc9e9a70c15135bd85d89e8257c55ef71e6289963f170

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4wgnt23z.v2g.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2912-11-0x000001AA30D70000-0x000001AA30D92000-memory.dmp

Filesize
136KB

Download
memory/2912-14-0x00007FFAACDC0000-0x00007FFAAD881000-memory.dmp

Filesize
10.8MB

Download
memory/2912-15-0x00007FFAACDC0000-0x00007FFAAD881000-memory.dmp

Filesize
10.8MB

Download
memory/2912-18-0x00007FFAACDC0000-0x00007FFAAD881000-memory.dmp

Filesize
10.8MB

Download
memory/2912-13-0x00007FFAACDC0000-0x00007FFAAD881000-memory.dmp

Filesize
10.8MB

Download
memory/3564-33-0x0000027C665C0000-0x0000027C66610000-memory.dmp

Filesize
320KB

Download
memory/3564-32-0x0000027C66610000-0x0000027C66686000-memory.dmp

Filesize
472KB

Download
memory/3564-34-0x0000027C66590000-0x0000027C665AE000-memory.dmp

Filesize
120KB

Download
memory/3564-1-0x00007FFAACDC3000-0x00007FFAACDC5000-memory.dmp

Filesize
8KB

Download
memory/3564-0-0x0000027C4BED0000-0x0000027C4BF10000-memory.dmp

Filesize
256KB

Download
memory/3564-70-0x0000027C666A0000-0x0000027C666AA000-memory.dmp

Filesize
40KB

Download
memory/3564-71-0x0000027C666F0000-0x0000027C66702000-memory.dmp

Filesize
72KB

Download
memory/3564-2-0x00007FFAACDC0000-0x00007FFAAD881000-memory.dmp

Filesize
10.8MB

Download
memory/3564-89-0x00007FFAACDC0000-0x00007FFAAD881000-memory.dmp

Filesize
10.8MB

Download