umbral | a8c74a05f574514ec74cb942ec0ff1d5380da648e145ba829dec4cc511ec4cd7

Analysis

max time kernel
140s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
29-08-2024 01:54

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General

Target

5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe
Size

229KB
MD5

eabe2a81aa3dabab25e49ee4b36ce075
SHA1

f55b6298f0a8330d90d39e20a73adb2e828dfd1c
SHA256

5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686
SHA512

9688119150d3a466d9a12bfc55933d367104747a2cf319467a78dfcf975361c9e2727f76efe380db9d0c92c39dc4b0241bfb444e965e92720c9edcf42c1d18fe
SSDEEP

6144:lloZM+rIkd8g+EtXHkv/iD4Wn0IZHMgPou35EwFyov28e1mpi:noZtL+EP8Wn0IZHMgPou35EwFm1

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/5008-1-0x000001BB6B730000-0x000001BB6B770000-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

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3676	powershell.exe
1752	powershell.exe
4320	powershell.exe
2444	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.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
31	discord.com
33	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

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
4788	PING.EXE
680	cmd.exe

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1176	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4788	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
5008	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe
2444	powershell.exe
2444	powershell.exe
3676	powershell.exe
3676	powershell.exe
1752	powershell.exe
1752	powershell.exe
4356	powershell.exe
4356	powershell.exe
4320	powershell.exe
4320	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	5008	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe
Token: SeIncreaseQuotaPrivilege	4060	wmic.exe
Token: SeSecurityPrivilege	4060	wmic.exe
Token: SeTakeOwnershipPrivilege	4060	wmic.exe
Token: SeLoadDriverPrivilege	4060	wmic.exe
Token: SeSystemProfilePrivilege	4060	wmic.exe
Token: SeSystemtimePrivilege	4060	wmic.exe
Token: SeProfSingleProcessPrivilege	4060	wmic.exe
Token: SeIncBasePriorityPrivilege	4060	wmic.exe
Token: SeCreatePagefilePrivilege	4060	wmic.exe
Token: SeBackupPrivilege	4060	wmic.exe
Token: SeRestorePrivilege	4060	wmic.exe
Token: SeShutdownPrivilege	4060	wmic.exe
Token: SeDebugPrivilege	4060	wmic.exe
Token: SeSystemEnvironmentPrivilege	4060	wmic.exe
Token: SeRemoteShutdownPrivilege	4060	wmic.exe
Token: SeUndockPrivilege	4060	wmic.exe
Token: SeManageVolumePrivilege	4060	wmic.exe
Token: 33	4060	wmic.exe
Token: 34	4060	wmic.exe
Token: 35	4060	wmic.exe
Token: 36	4060	wmic.exe
Token: SeIncreaseQuotaPrivilege	4060	wmic.exe
Token: SeSecurityPrivilege	4060	wmic.exe
Token: SeTakeOwnershipPrivilege	4060	wmic.exe
Token: SeLoadDriverPrivilege	4060	wmic.exe
Token: SeSystemProfilePrivilege	4060	wmic.exe
Token: SeSystemtimePrivilege	4060	wmic.exe
Token: SeProfSingleProcessPrivilege	4060	wmic.exe
Token: SeIncBasePriorityPrivilege	4060	wmic.exe
Token: SeCreatePagefilePrivilege	4060	wmic.exe
Token: SeBackupPrivilege	4060	wmic.exe
Token: SeRestorePrivilege	4060	wmic.exe
Token: SeShutdownPrivilege	4060	wmic.exe
Token: SeDebugPrivilege	4060	wmic.exe
Token: SeSystemEnvironmentPrivilege	4060	wmic.exe
Token: SeRemoteShutdownPrivilege	4060	wmic.exe
Token: SeUndockPrivilege	4060	wmic.exe
Token: SeManageVolumePrivilege	4060	wmic.exe
Token: 33	4060	wmic.exe
Token: 34	4060	wmic.exe
Token: 35	4060	wmic.exe
Token: 36	4060	wmic.exe
Token: SeDebugPrivilege	2444	powershell.exe
Token: SeDebugPrivilege	3676	powershell.exe
Token: SeDebugPrivilege	1752	powershell.exe
Token: SeDebugPrivilege	4356	powershell.exe
Token: SeIncreaseQuotaPrivilege	4856	wmic.exe
Token: SeSecurityPrivilege	4856	wmic.exe
Token: SeTakeOwnershipPrivilege	4856	wmic.exe
Token: SeLoadDriverPrivilege	4856	wmic.exe
Token: SeSystemProfilePrivilege	4856	wmic.exe
Token: SeSystemtimePrivilege	4856	wmic.exe
Token: SeProfSingleProcessPrivilege	4856	wmic.exe
Token: SeIncBasePriorityPrivilege	4856	wmic.exe
Token: SeCreatePagefilePrivilege	4856	wmic.exe
Token: SeBackupPrivilege	4856	wmic.exe
Token: SeRestorePrivilege	4856	wmic.exe
Token: SeShutdownPrivilege	4856	wmic.exe
Token: SeDebugPrivilege	4856	wmic.exe
Token: SeSystemEnvironmentPrivilege	4856	wmic.exe
Token: SeRemoteShutdownPrivilege	4856	wmic.exe
Token: SeUndockPrivilege	4856	wmic.exe
Token: SeManageVolumePrivilege	4856	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 5008 wrote to memory of 4060	5008	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	85
PID 5008 wrote to memory of 4060	5008	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	85
PID 5008 wrote to memory of 1244	5008	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	91
PID 5008 wrote to memory of 1244	5008	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	91
PID 5008 wrote to memory of 2444	5008	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	93
PID 5008 wrote to memory of 2444	5008	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	93
PID 5008 wrote to memory of 3676	5008	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	95
PID 5008 wrote to memory of 3676	5008	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	95
PID 5008 wrote to memory of 1752	5008	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	97
PID 5008 wrote to memory of 1752	5008	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	97
PID 5008 wrote to memory of 4356	5008	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	99
PID 5008 wrote to memory of 4356	5008	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	99
PID 5008 wrote to memory of 4856	5008	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	101
PID 5008 wrote to memory of 4856	5008	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	101
PID 5008 wrote to memory of 228	5008	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	103
PID 5008 wrote to memory of 228	5008	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	103
PID 5008 wrote to memory of 4372	5008	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	105
PID 5008 wrote to memory of 4372	5008	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	105
PID 5008 wrote to memory of 4320	5008	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	107
PID 5008 wrote to memory of 4320	5008	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	107
PID 5008 wrote to memory of 1176	5008	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	109
PID 5008 wrote to memory of 1176	5008	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	109
PID 5008 wrote to memory of 680	5008	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	113
PID 5008 wrote to memory of 680	5008	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	113
PID 680 wrote to memory of 4788	680	cmd.exe	115
PID 680 wrote to memory of 4788	680	cmd.exe	115

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1244	attrib.exe

C:\Users\Admin\AppData\Local\Temp\5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe
"C:\Users\Admin\AppData\Local\Temp\5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5008
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4060
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe"
  2⤵
  - Views/modifies file attributes
  PID:1244
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2444
- 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:3676
- 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:1752
- 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:4356
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4856
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:228
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4372
- 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:4320
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1176
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:680
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4788

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

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Remote System Discovery

T1018

System Information Discovery

T1082

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

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
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

Filesize
944B

MD5
6d3e9c29fe44e90aae6ed30ccf799ca8

SHA1
c7974ef72264bbdf13a2793ccf1aed11bc565dce

SHA256
2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

SHA512
60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

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

Filesize
948B

MD5
966914e2e771de7a4a57a95b6ecfa8a9

SHA1
7a32282fd51dd032967ed4d9a40cc57e265aeff2

SHA256
98d3c70d7004fa807897317bd6cd3e977b9b6c72d4d2565aca0f9f8b1c315cba

SHA512
dc39c7124a9c7c8d4c7e8e16290c46360b8d9a8f4e43edaacbbeb09bdcf20159a53db54d2b322372001b6a3de52b2f88e9088b5fdbc7638816ae0d122bb015f5

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
cf1b06b44fb8bc1a4f25c85e70937782

SHA1
c4adeae41a97fc11d407c398040dd109873fb2e5

SHA256
04ddc18714503a6c256830af58a731df9d9ad479e87663787e0fa92424c9b743

SHA512
07fcfc741b14ef3551fdc53a08e31020fd9e1d43ab637535a11e318c9f8d48ea37cae3913539838e74299952a868a7824982ad5dc887992686d45050cc1fc7cf

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fdlvrtqz.vwq.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2444-4-0x00007FFCC79E0000-0x00007FFCC84A1000-memory.dmp

Filesize
10.8MB

Download
memory/2444-5-0x00007FFCC79E0000-0x00007FFCC84A1000-memory.dmp

Filesize
10.8MB

Download
memory/2444-8-0x000002193A850000-0x000002193A872000-memory.dmp

Filesize
136KB

Download
memory/2444-18-0x00007FFCC79E0000-0x00007FFCC84A1000-memory.dmp

Filesize
10.8MB

Download
memory/2444-3-0x00007FFCC79E0000-0x00007FFCC84A1000-memory.dmp

Filesize
10.8MB

Download
memory/5008-34-0x000001BB6DFB0000-0x000001BB6E000000-memory.dmp

Filesize
320KB

Download
memory/5008-33-0x000001BB6DEE0000-0x000001BB6DF56000-memory.dmp

Filesize
472KB

Download
memory/5008-35-0x000001BB6D3B0000-0x000001BB6D3CE000-memory.dmp

Filesize
120KB

Download
memory/5008-1-0x000001BB6B730000-0x000001BB6B770000-memory.dmp

Filesize
256KB

Download
memory/5008-0-0x00007FFCC79E3000-0x00007FFCC79E5000-memory.dmp

Filesize
8KB

Download
memory/5008-71-0x000001BB6D3F0000-0x000001BB6D3FA000-memory.dmp

Filesize
40KB

Download
memory/5008-72-0x000001BB6DE60000-0x000001BB6DE72000-memory.dmp

Filesize
72KB

Download
memory/5008-2-0x00007FFCC79E0000-0x00007FFCC84A1000-memory.dmp

Filesize
10.8MB

Download
memory/5008-90-0x00007FFCC79E0000-0x00007FFCC84A1000-memory.dmp

Filesize
10.8MB

Download