umbral | 5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686

Analysis

max time kernel
97s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
28-08-2024 01:44

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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/1916-1-0x0000029422DB0000-0x0000029422DF0000-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
2712	powershell.exe
3544	powershell.exe
3976	powershell.exe
2632	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
30	discord.com
31	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
9	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
4868	cmd.exe
976	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2380	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
976	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
1916	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe
2712	powershell.exe
2712	powershell.exe
3544	powershell.exe
3544	powershell.exe
3976	powershell.exe
3976	powershell.exe
2364	powershell.exe
2364	powershell.exe
2632	powershell.exe
2632	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1916	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe
Token: SeIncreaseQuotaPrivilege	2436	wmic.exe
Token: SeSecurityPrivilege	2436	wmic.exe
Token: SeTakeOwnershipPrivilege	2436	wmic.exe
Token: SeLoadDriverPrivilege	2436	wmic.exe
Token: SeSystemProfilePrivilege	2436	wmic.exe
Token: SeSystemtimePrivilege	2436	wmic.exe
Token: SeProfSingleProcessPrivilege	2436	wmic.exe
Token: SeIncBasePriorityPrivilege	2436	wmic.exe
Token: SeCreatePagefilePrivilege	2436	wmic.exe
Token: SeBackupPrivilege	2436	wmic.exe
Token: SeRestorePrivilege	2436	wmic.exe
Token: SeShutdownPrivilege	2436	wmic.exe
Token: SeDebugPrivilege	2436	wmic.exe
Token: SeSystemEnvironmentPrivilege	2436	wmic.exe
Token: SeRemoteShutdownPrivilege	2436	wmic.exe
Token: SeUndockPrivilege	2436	wmic.exe
Token: SeManageVolumePrivilege	2436	wmic.exe
Token: 33	2436	wmic.exe
Token: 34	2436	wmic.exe
Token: 35	2436	wmic.exe
Token: 36	2436	wmic.exe
Token: SeIncreaseQuotaPrivilege	2436	wmic.exe
Token: SeSecurityPrivilege	2436	wmic.exe
Token: SeTakeOwnershipPrivilege	2436	wmic.exe
Token: SeLoadDriverPrivilege	2436	wmic.exe
Token: SeSystemProfilePrivilege	2436	wmic.exe
Token: SeSystemtimePrivilege	2436	wmic.exe
Token: SeProfSingleProcessPrivilege	2436	wmic.exe
Token: SeIncBasePriorityPrivilege	2436	wmic.exe
Token: SeCreatePagefilePrivilege	2436	wmic.exe
Token: SeBackupPrivilege	2436	wmic.exe
Token: SeRestorePrivilege	2436	wmic.exe
Token: SeShutdownPrivilege	2436	wmic.exe
Token: SeDebugPrivilege	2436	wmic.exe
Token: SeSystemEnvironmentPrivilege	2436	wmic.exe
Token: SeRemoteShutdownPrivilege	2436	wmic.exe
Token: SeUndockPrivilege	2436	wmic.exe
Token: SeManageVolumePrivilege	2436	wmic.exe
Token: 33	2436	wmic.exe
Token: 34	2436	wmic.exe
Token: 35	2436	wmic.exe
Token: 36	2436	wmic.exe
Token: SeDebugPrivilege	2712	powershell.exe
Token: SeDebugPrivilege	3544	powershell.exe
Token: SeDebugPrivilege	3976	powershell.exe
Token: SeDebugPrivilege	2364	powershell.exe
Token: SeIncreaseQuotaPrivilege	4964	wmic.exe
Token: SeSecurityPrivilege	4964	wmic.exe
Token: SeTakeOwnershipPrivilege	4964	wmic.exe
Token: SeLoadDriverPrivilege	4964	wmic.exe
Token: SeSystemProfilePrivilege	4964	wmic.exe
Token: SeSystemtimePrivilege	4964	wmic.exe
Token: SeProfSingleProcessPrivilege	4964	wmic.exe
Token: SeIncBasePriorityPrivilege	4964	wmic.exe
Token: SeCreatePagefilePrivilege	4964	wmic.exe
Token: SeBackupPrivilege	4964	wmic.exe
Token: SeRestorePrivilege	4964	wmic.exe
Token: SeShutdownPrivilege	4964	wmic.exe
Token: SeDebugPrivilege	4964	wmic.exe
Token: SeSystemEnvironmentPrivilege	4964	wmic.exe
Token: SeRemoteShutdownPrivilege	4964	wmic.exe
Token: SeUndockPrivilege	4964	wmic.exe
Token: SeManageVolumePrivilege	4964	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1916 wrote to memory of 2436	1916	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	86
PID 1916 wrote to memory of 2436	1916	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	86
PID 1916 wrote to memory of 1224	1916	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	91
PID 1916 wrote to memory of 1224	1916	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	91
PID 1916 wrote to memory of 2712	1916	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	93
PID 1916 wrote to memory of 2712	1916	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	93
PID 1916 wrote to memory of 3544	1916	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	95
PID 1916 wrote to memory of 3544	1916	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	95
PID 1916 wrote to memory of 3976	1916	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	97
PID 1916 wrote to memory of 3976	1916	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	97
PID 1916 wrote to memory of 2364	1916	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	101
PID 1916 wrote to memory of 2364	1916	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	101
PID 1916 wrote to memory of 4964	1916	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	104
PID 1916 wrote to memory of 4964	1916	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	104
PID 1916 wrote to memory of 4644	1916	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	106
PID 1916 wrote to memory of 4644	1916	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	106
PID 1916 wrote to memory of 4672	1916	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	108
PID 1916 wrote to memory of 4672	1916	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	108
PID 1916 wrote to memory of 2632	1916	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	110
PID 1916 wrote to memory of 2632	1916	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	110
PID 1916 wrote to memory of 2380	1916	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	112
PID 1916 wrote to memory of 2380	1916	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	112
PID 1916 wrote to memory of 4868	1916	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	114
PID 1916 wrote to memory of 4868	1916	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	114
PID 4868 wrote to memory of 976	4868	cmd.exe	116
PID 4868 wrote to memory of 976	4868	cmd.exe	116

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1224	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:1916
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2436
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe"
  2⤵
  - Views/modifies file attributes
  PID:1224
- 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:2712
- 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:3544
- 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:3976
- 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:2364
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4964
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:4644
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4672
- 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:2632
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2380
- 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:4868
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:976

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
2e907f77659a6601fcc408274894da2e

SHA1
9f5b72abef1cd7145bf37547cdb1b9254b4efe9d

SHA256
385da35673330e21ac02545220552fe301fe54dedefbdafc097ac4342a295233

SHA512
34fa0fff24f6550f55f828541aaefe5d75c86f8f0842d54b50065e9746f9662bb7209c74c9a9571540b9855bb3851f01db613190024e89b198d485bb5dc07721

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

Filesize
948B

MD5
985b3105d8889886d6fd953575c54e08

SHA1
0f9a041240a344d82bac0a180520e7982c15f3cd

SHA256
5178fdd457eb3eb25c8f72ed4c22c582a83de0d324db66d0446d660f226e944d

SHA512
0fd59bc4886b70aa3b7eeeaa23229b7fdc93410ca7f8452860e4a1bbda2559eaa5e4b05c3ec2d85f7d648daf3c16741f4c2c18f2dd3bae4cc4a4e57ae4f665b0

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

Filesize
1KB

MD5
227556da5e65f6819f477756808c17e4

SHA1
6ffce766e881ca2a60180bb25f4981b183f78279

SHA256
101f5fe8a4192f14e9f0a12c105ca81c9f176860930af44747185dd1bedb59a4

SHA512
d46b935809d2c4b7a041ad790f2db11c0a808df022c91ae9152b8769021b884fde49653a7a46557ef9ee65e274fe0b6c8503df9b50e6b3b849fefacf51f8bd6a

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

Filesize
1KB

MD5
36d03a272b43b1c16e5bce541906f649

SHA1
66f0178c3182a09386738d60501411a14b4a3864

SHA256
3fe1814466c786b9b14e3d1b9f9348434db490bc462b9e071f7bcaea5ef9e270

SHA512
d6c34935c1c22bda2ffd3550e54ca77bca92ab46829d3acc58c263fec94f8b6fa578105a80121c78e6d38ee51ec8f1bb8ae74ba7844a207499145308ec982a3a

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_idh0nw51.aqu.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1916-71-0x0000029424A70000-0x0000029424A7A000-memory.dmp

Filesize
40KB

Download
memory/1916-35-0x0000029424A50000-0x0000029424A6E000-memory.dmp

Filesize
120KB

Download
memory/1916-90-0x00007FFFE4CD0000-0x00007FFFE5791000-memory.dmp

Filesize
10.8MB

Download
memory/1916-72-0x000002943D510000-0x000002943D522000-memory.dmp

Filesize
72KB

Download
memory/1916-2-0x00007FFFE4CD0000-0x00007FFFE5791000-memory.dmp

Filesize
10.8MB

Download
memory/1916-33-0x000002943D540000-0x000002943D5B6000-memory.dmp

Filesize
472KB

Download
memory/1916-34-0x000002943D4C0000-0x000002943D510000-memory.dmp

Filesize
320KB

Download
memory/1916-0-0x00007FFFE4CD3000-0x00007FFFE4CD5000-memory.dmp

Filesize
8KB

Download
memory/1916-1-0x0000029422DB0000-0x0000029422DF0000-memory.dmp

Filesize
256KB

Download
memory/2712-15-0x00007FFFE4CD0000-0x00007FFFE5791000-memory.dmp

Filesize
10.8MB

Download
memory/2712-4-0x0000022155120000-0x0000022155142000-memory.dmp

Filesize
136KB

Download
memory/2712-3-0x00007FFFE4CD0000-0x00007FFFE5791000-memory.dmp

Filesize
10.8MB

Download
memory/2712-10-0x00007FFFE4CD0000-0x00007FFFE5791000-memory.dmp

Filesize
10.8MB

Download
memory/2712-18-0x00007FFFE4CD0000-0x00007FFFE5791000-memory.dmp

Filesize
10.8MB

Download