umbral | 3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea

Analysis

max time kernel
95s
max time network
122s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
02/09/2024, 20:58

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General

Target

3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe
Size

229KB
MD5

8887b7baff5156a22acd0a8f5f59d606
SHA1

a77181461892efdd781892b9b676a78fce0615ae
SHA256

3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea
SHA512

0f0f2055533ae30088a1daeb30aee278bc3c4e2f319dbd2f436880b6386774535a7e30ae964cf09ad6dd8f5038bba0a1c6abf919c5c4e223ebf58c9dcf629a0b
SSDEEP

6144:FloZM+rIkd8g+EtXHkv/iD4HzVViAfbopxUyzzql8rb8e1mTi:HoZtL+EP8HzVViAfbopxUyzzqo9

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/4596-1-0x000001B38E840000-0x000001B38E880000-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
4496	powershell.exe
2096	powershell.exe
984	powershell.exe
4372	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.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
24	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
11	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
2672	cmd.exe
4860	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2296	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4860	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4596	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe
4372	powershell.exe
4372	powershell.exe
4496	powershell.exe
4496	powershell.exe
2096	powershell.exe
2096	powershell.exe
4000	powershell.exe
4000	powershell.exe
984	powershell.exe
984	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4596	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe
Token: SeIncreaseQuotaPrivilege	2656	wmic.exe
Token: SeSecurityPrivilege	2656	wmic.exe
Token: SeTakeOwnershipPrivilege	2656	wmic.exe
Token: SeLoadDriverPrivilege	2656	wmic.exe
Token: SeSystemProfilePrivilege	2656	wmic.exe
Token: SeSystemtimePrivilege	2656	wmic.exe
Token: SeProfSingleProcessPrivilege	2656	wmic.exe
Token: SeIncBasePriorityPrivilege	2656	wmic.exe
Token: SeCreatePagefilePrivilege	2656	wmic.exe
Token: SeBackupPrivilege	2656	wmic.exe
Token: SeRestorePrivilege	2656	wmic.exe
Token: SeShutdownPrivilege	2656	wmic.exe
Token: SeDebugPrivilege	2656	wmic.exe
Token: SeSystemEnvironmentPrivilege	2656	wmic.exe
Token: SeRemoteShutdownPrivilege	2656	wmic.exe
Token: SeUndockPrivilege	2656	wmic.exe
Token: SeManageVolumePrivilege	2656	wmic.exe
Token: 33	2656	wmic.exe
Token: 34	2656	wmic.exe
Token: 35	2656	wmic.exe
Token: 36	2656	wmic.exe
Token: SeIncreaseQuotaPrivilege	2656	wmic.exe
Token: SeSecurityPrivilege	2656	wmic.exe
Token: SeTakeOwnershipPrivilege	2656	wmic.exe
Token: SeLoadDriverPrivilege	2656	wmic.exe
Token: SeSystemProfilePrivilege	2656	wmic.exe
Token: SeSystemtimePrivilege	2656	wmic.exe
Token: SeProfSingleProcessPrivilege	2656	wmic.exe
Token: SeIncBasePriorityPrivilege	2656	wmic.exe
Token: SeCreatePagefilePrivilege	2656	wmic.exe
Token: SeBackupPrivilege	2656	wmic.exe
Token: SeRestorePrivilege	2656	wmic.exe
Token: SeShutdownPrivilege	2656	wmic.exe
Token: SeDebugPrivilege	2656	wmic.exe
Token: SeSystemEnvironmentPrivilege	2656	wmic.exe
Token: SeRemoteShutdownPrivilege	2656	wmic.exe
Token: SeUndockPrivilege	2656	wmic.exe
Token: SeManageVolumePrivilege	2656	wmic.exe
Token: 33	2656	wmic.exe
Token: 34	2656	wmic.exe
Token: 35	2656	wmic.exe
Token: 36	2656	wmic.exe
Token: SeDebugPrivilege	4372	powershell.exe
Token: SeDebugPrivilege	4496	powershell.exe
Token: SeDebugPrivilege	2096	powershell.exe
Token: SeDebugPrivilege	4000	powershell.exe
Token: SeIncreaseQuotaPrivilege	3136	wmic.exe
Token: SeSecurityPrivilege	3136	wmic.exe
Token: SeTakeOwnershipPrivilege	3136	wmic.exe
Token: SeLoadDriverPrivilege	3136	wmic.exe
Token: SeSystemProfilePrivilege	3136	wmic.exe
Token: SeSystemtimePrivilege	3136	wmic.exe
Token: SeProfSingleProcessPrivilege	3136	wmic.exe
Token: SeIncBasePriorityPrivilege	3136	wmic.exe
Token: SeCreatePagefilePrivilege	3136	wmic.exe
Token: SeBackupPrivilege	3136	wmic.exe
Token: SeRestorePrivilege	3136	wmic.exe
Token: SeShutdownPrivilege	3136	wmic.exe
Token: SeDebugPrivilege	3136	wmic.exe
Token: SeSystemEnvironmentPrivilege	3136	wmic.exe
Token: SeRemoteShutdownPrivilege	3136	wmic.exe
Token: SeUndockPrivilege	3136	wmic.exe
Token: SeManageVolumePrivilege	3136	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4596 wrote to memory of 2656	4596	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	84
PID 4596 wrote to memory of 2656	4596	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	84
PID 4596 wrote to memory of 2952	4596	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	89
PID 4596 wrote to memory of 2952	4596	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	89
PID 4596 wrote to memory of 4372	4596	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	91
PID 4596 wrote to memory of 4372	4596	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	91
PID 4596 wrote to memory of 4496	4596	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	93
PID 4596 wrote to memory of 4496	4596	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	93
PID 4596 wrote to memory of 2096	4596	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	95
PID 4596 wrote to memory of 2096	4596	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	95
PID 4596 wrote to memory of 4000	4596	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	97
PID 4596 wrote to memory of 4000	4596	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	97
PID 4596 wrote to memory of 3136	4596	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	101
PID 4596 wrote to memory of 3136	4596	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	101
PID 4596 wrote to memory of 2496	4596	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	103
PID 4596 wrote to memory of 2496	4596	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	103
PID 4596 wrote to memory of 1896	4596	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	105
PID 4596 wrote to memory of 1896	4596	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	105
PID 4596 wrote to memory of 984	4596	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	108
PID 4596 wrote to memory of 984	4596	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	108
PID 4596 wrote to memory of 2296	4596	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	110
PID 4596 wrote to memory of 2296	4596	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	110
PID 4596 wrote to memory of 2672	4596	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	112
PID 4596 wrote to memory of 2672	4596	3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe	112
PID 2672 wrote to memory of 4860	2672	cmd.exe	114
PID 2672 wrote to memory of 4860	2672	cmd.exe	114

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2952	attrib.exe

C:\Users\Admin\AppData\Local\Temp\3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe
"C:\Users\Admin\AppData\Local\Temp\3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4596
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2656
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe"
  2⤵
  - Views/modifies file attributes
  PID:2952
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4372
- 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:4496
- 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:2096
- 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:4000
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3136
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2496
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1896
- 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:984
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2296
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\3fa004ae1034e479a4c536a09468edbc5e55271c7833d6768252a1f7aa1ec3ea.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2672
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4860

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
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
948B

MD5
1d143d8f176947e4677211d4a25162e0

SHA1
8b595dccdc6dd126d7660cb074968b2e28ce7071

SHA256
5552727ed38222e454bf700c88d5b1d16823e2ffb095ecb0aa8c1d73b897eab8

SHA512
bc4096fd0f70abdf9286f44fa97d8dfb8773506c9358d9967fcade44f4686e647b0c394792bdf1c2df6888e0d20ce2e053a435f543c125629afcc90cbe394497

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
cf1b06b44fb8bc1a4f25c85e70937782

SHA1
c4adeae41a97fc11d407c398040dd109873fb2e5

SHA256
04ddc18714503a6c256830af58a731df9d9ad479e87663787e0fa92424c9b743

SHA512
07fcfc741b14ef3551fdc53a08e31020fd9e1d43ab637535a11e318c9f8d48ea37cae3913539838e74299952a868a7824982ad5dc887992686d45050cc1fc7cf

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3pxcek2u.1ap.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4372-14-0x00007FFC5CC00000-0x00007FFC5D6C1000-memory.dmp

Filesize
10.8MB

Download
memory/4372-9-0x000001FF55700000-0x000001FF55722000-memory.dmp

Filesize
136KB

Download
memory/4372-15-0x00007FFC5CC00000-0x00007FFC5D6C1000-memory.dmp

Filesize
10.8MB

Download
memory/4372-18-0x00007FFC5CC00000-0x00007FFC5D6C1000-memory.dmp

Filesize
10.8MB

Download
memory/4372-3-0x00007FFC5CC00000-0x00007FFC5D6C1000-memory.dmp

Filesize
10.8MB

Download
memory/4596-34-0x000001B3A8F70000-0x000001B3A8FC0000-memory.dmp

Filesize
320KB

Download
memory/4596-33-0x000001B3A8FF0000-0x000001B3A9066000-memory.dmp

Filesize
472KB

Download
memory/4596-35-0x000001B3905D0000-0x000001B3905EE000-memory.dmp

Filesize
120KB

Download
memory/4596-1-0x000001B38E840000-0x000001B38E880000-memory.dmp

Filesize
256KB

Download
memory/4596-0-0x00007FFC5CC03000-0x00007FFC5CC05000-memory.dmp

Filesize
8KB

Download
memory/4596-72-0x000001B3A8E40000-0x000001B3A8E52000-memory.dmp

Filesize
72KB

Download
memory/4596-71-0x000001B390600000-0x000001B39060A000-memory.dmp

Filesize
40KB

Download
memory/4596-2-0x00007FFC5CC00000-0x00007FFC5D6C1000-memory.dmp

Filesize
10.8MB

Download
memory/4596-90-0x00007FFC5CC00000-0x00007FFC5D6C1000-memory.dmp

Filesize
10.8MB

Download