umbral | f66e2d7ea0cafc94b9ae2dea2b86bdd37a26dfa02381f82ea8a791c7a6025f80

Analysis

max time kernel
94s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19-01-2025 12:13

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General

Target

f66e2d7ea0cafc94b9ae2dea2b86bdd37a26dfa02381f82ea8a791c7a6025f80N.exe
Size

1.6MB
MD5

4131bbc8e8e1f839b6d116fbdc75b760
SHA1

40c1cc07a70cc1183cd096ccf2f5322d4ede7149
SHA256

f66e2d7ea0cafc94b9ae2dea2b86bdd37a26dfa02381f82ea8a791c7a6025f80
SHA512

908d5482a530ff722f988356beccb8c6904d5acbcdb40dc2608098e0abcfc1a1991ebb615e5ab69716f3d96ca1049dd45850ff97c632ac1304ecee0da629ca4b
SSDEEP

24576:YcNnc2ZIQ2tRXUDo42d2ZCZbyLiVLVakZdwBuC/y45doBmkI+GgUVjt:blDoh2G+LiVzAsC/y8V

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 2 IoCs

resource	yara_rule
behavioral2/files/0x000a000000023b91-14.dat	family_umbral
behavioral2/memory/1144-22-0x0000025CBF7F0000-0x0000025CBF870000-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

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

execution

PowerShell

T1059.001

pid	Process
212	powershell.exe
2156	powershell.exe
4080	powershell.exe
3944	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	Error.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	f66e2d7ea0cafc94b9ae2dea2b86bdd37a26dfa02381f82ea8a791c7a6025f80N.exe

Executes dropped EXE 2 IoCs

pid	Process
4500	OQ9.exe
1144	Error.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
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
20	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	OQ9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

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
2164	cmd.exe
4788	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1168	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
1144	Error.exe
212	powershell.exe
212	powershell.exe
2156	powershell.exe
2156	powershell.exe
4080	powershell.exe
4080	powershell.exe
4728	powershell.exe
4728	powershell.exe
3944	powershell.exe
3944	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1144	Error.exe
Token: SeIncreaseQuotaPrivilege	2736	wmic.exe
Token: SeSecurityPrivilege	2736	wmic.exe
Token: SeTakeOwnershipPrivilege	2736	wmic.exe
Token: SeLoadDriverPrivilege	2736	wmic.exe
Token: SeSystemProfilePrivilege	2736	wmic.exe
Token: SeSystemtimePrivilege	2736	wmic.exe
Token: SeProfSingleProcessPrivilege	2736	wmic.exe
Token: SeIncBasePriorityPrivilege	2736	wmic.exe
Token: SeCreatePagefilePrivilege	2736	wmic.exe
Token: SeBackupPrivilege	2736	wmic.exe
Token: SeRestorePrivilege	2736	wmic.exe
Token: SeShutdownPrivilege	2736	wmic.exe
Token: SeDebugPrivilege	2736	wmic.exe
Token: SeSystemEnvironmentPrivilege	2736	wmic.exe
Token: SeRemoteShutdownPrivilege	2736	wmic.exe
Token: SeUndockPrivilege	2736	wmic.exe
Token: SeManageVolumePrivilege	2736	wmic.exe
Token: 33	2736	wmic.exe
Token: 34	2736	wmic.exe
Token: 35	2736	wmic.exe
Token: 36	2736	wmic.exe
Token: SeIncreaseQuotaPrivilege	2736	wmic.exe
Token: SeSecurityPrivilege	2736	wmic.exe
Token: SeTakeOwnershipPrivilege	2736	wmic.exe
Token: SeLoadDriverPrivilege	2736	wmic.exe
Token: SeSystemProfilePrivilege	2736	wmic.exe
Token: SeSystemtimePrivilege	2736	wmic.exe
Token: SeProfSingleProcessPrivilege	2736	wmic.exe
Token: SeIncBasePriorityPrivilege	2736	wmic.exe
Token: SeCreatePagefilePrivilege	2736	wmic.exe
Token: SeBackupPrivilege	2736	wmic.exe
Token: SeRestorePrivilege	2736	wmic.exe
Token: SeShutdownPrivilege	2736	wmic.exe
Token: SeDebugPrivilege	2736	wmic.exe
Token: SeSystemEnvironmentPrivilege	2736	wmic.exe
Token: SeRemoteShutdownPrivilege	2736	wmic.exe
Token: SeUndockPrivilege	2736	wmic.exe
Token: SeManageVolumePrivilege	2736	wmic.exe
Token: 33	2736	wmic.exe
Token: 34	2736	wmic.exe
Token: 35	2736	wmic.exe
Token: 36	2736	wmic.exe
Token: SeDebugPrivilege	212	powershell.exe
Token: SeDebugPrivilege	2156	powershell.exe
Token: SeDebugPrivilege	4080	powershell.exe
Token: SeDebugPrivilege	4728	powershell.exe
Token: SeIncreaseQuotaPrivilege	2520	wmic.exe
Token: SeSecurityPrivilege	2520	wmic.exe
Token: SeTakeOwnershipPrivilege	2520	wmic.exe
Token: SeLoadDriverPrivilege	2520	wmic.exe
Token: SeSystemProfilePrivilege	2520	wmic.exe
Token: SeSystemtimePrivilege	2520	wmic.exe
Token: SeProfSingleProcessPrivilege	2520	wmic.exe
Token: SeIncBasePriorityPrivilege	2520	wmic.exe
Token: SeCreatePagefilePrivilege	2520	wmic.exe
Token: SeBackupPrivilege	2520	wmic.exe
Token: SeRestorePrivilege	2520	wmic.exe
Token: SeShutdownPrivilege	2520	wmic.exe
Token: SeDebugPrivilege	2520	wmic.exe
Token: SeSystemEnvironmentPrivilege	2520	wmic.exe
Token: SeRemoteShutdownPrivilege	2520	wmic.exe
Token: SeUndockPrivilege	2520	wmic.exe
Token: SeManageVolumePrivilege	2520	wmic.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 3588 wrote to memory of 4500	3588	f66e2d7ea0cafc94b9ae2dea2b86bdd37a26dfa02381f82ea8a791c7a6025f80N.exe	83
PID 3588 wrote to memory of 4500	3588	f66e2d7ea0cafc94b9ae2dea2b86bdd37a26dfa02381f82ea8a791c7a6025f80N.exe	83
PID 3588 wrote to memory of 4500	3588	f66e2d7ea0cafc94b9ae2dea2b86bdd37a26dfa02381f82ea8a791c7a6025f80N.exe	83
PID 3588 wrote to memory of 1144	3588	f66e2d7ea0cafc94b9ae2dea2b86bdd37a26dfa02381f82ea8a791c7a6025f80N.exe	85
PID 3588 wrote to memory of 1144	3588	f66e2d7ea0cafc94b9ae2dea2b86bdd37a26dfa02381f82ea8a791c7a6025f80N.exe	85
PID 1144 wrote to memory of 2736	1144	Error.exe	86
PID 1144 wrote to memory of 2736	1144	Error.exe	86
PID 4500 wrote to memory of 2124	4500	OQ9.exe	89
PID 4500 wrote to memory of 2124	4500	OQ9.exe	89
PID 4500 wrote to memory of 2124	4500	OQ9.exe	89
PID 1144 wrote to memory of 4704	1144	Error.exe	92
PID 1144 wrote to memory of 4704	1144	Error.exe	92
PID 1144 wrote to memory of 212	1144	Error.exe	95
PID 1144 wrote to memory of 212	1144	Error.exe	95
PID 1144 wrote to memory of 2156	1144	Error.exe	97
PID 1144 wrote to memory of 2156	1144	Error.exe	97
PID 1144 wrote to memory of 4080	1144	Error.exe	99
PID 1144 wrote to memory of 4080	1144	Error.exe	99
PID 1144 wrote to memory of 4728	1144	Error.exe	103
PID 1144 wrote to memory of 4728	1144	Error.exe	103
PID 1144 wrote to memory of 2520	1144	Error.exe	105
PID 1144 wrote to memory of 2520	1144	Error.exe	105
PID 1144 wrote to memory of 4532	1144	Error.exe	107
PID 1144 wrote to memory of 4532	1144	Error.exe	107
PID 1144 wrote to memory of 1444	1144	Error.exe	109
PID 1144 wrote to memory of 1444	1144	Error.exe	109
PID 1144 wrote to memory of 3944	1144	Error.exe	111
PID 1144 wrote to memory of 3944	1144	Error.exe	111
PID 1144 wrote to memory of 1168	1144	Error.exe	113
PID 1144 wrote to memory of 1168	1144	Error.exe	113
PID 1144 wrote to memory of 2164	1144	Error.exe	117
PID 1144 wrote to memory of 2164	1144	Error.exe	117
PID 2164 wrote to memory of 4788	2164	cmd.exe	119
PID 2164 wrote to memory of 4788	2164	cmd.exe	119

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4704	attrib.exe

C:\Users\Admin\AppData\Local\Temp\f66e2d7ea0cafc94b9ae2dea2b86bdd37a26dfa02381f82ea8a791c7a6025f80N.exe
"C:\Users\Admin\AppData\Local\Temp\f66e2d7ea0cafc94b9ae2dea2b86bdd37a26dfa02381f82ea8a791c7a6025f80N.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3588
- C:\Users\Admin\AppData\Local\Temp\OQ9.exe
  "C:\Users\Admin\AppData\Local\Temp\OQ9.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4500
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c cls
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2124
- C:\Users\Admin\AppData\Local\Temp\Error.exe
  "C:\Users\Admin\AppData\Local\Temp\Error.exe"
  2⤵
  - Drops file in Drivers directory
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1144
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2736
- - C:\Windows\SYSTEM32\attrib.exe
    "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Error.exe"
    3⤵
    - Views/modifies file attributes
    PID:4704
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Error.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:212
- - 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
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2156
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4080
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4728
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" os get Caption
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2520
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" computersystem get totalphysicalmemory
    3⤵
    PID:4532
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" csproduct get uuid
    3⤵
    PID:1444
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    PID:3944
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic" path win32_VideoController get name
    3⤵
    - Detects videocard installed
    PID:1168
- - C:\Windows\SYSTEM32\cmd.exe
    "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Error.exe" && pause
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Suspicious use of WriteProcessMemory
    PID:2164
  - - C:\Windows\system32\PING.EXE
      ping localhost
      4⤵
      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

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

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
1KB

MD5
eeb6ad386d143f278077171fc01a81e8

SHA1
43cff1bd7240965bfb2f10e47c0cec0f94332e2d

SHA256
59d62f9472b4c00b7cae0ee702789fa2b0042c468e4de9421d2430f9973eb00d

SHA512
b40f003e6d97adaaf05809f06d12df01984943d9eb6c44eaeffef90df8de0040373150c9714b11a42db5189b7064eeed0609a39f6f1feb91b05dd1835333e8f2

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

Filesize
944B

MD5
6d42b6da621e8df5674e26b799c8e2aa

SHA1
ab3ce1327ea1eeedb987ec823d5e0cb146bafa48

SHA256
5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c

SHA512
53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

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

Filesize
948B

MD5
5824a6037c081fda5d46de274b6e2799

SHA1
526367a09300cbde430e8fb44e41cbe7a0937aac

SHA256
4d610d9cd32a20279c7133a726ff61820d6930e5aa18253ee1422f3a6f54953f

SHA512
a109b150f730cda78d5bee106bd232f9dca7500dfb7899c6919de2bd542e345ca271aa11809a24ea0a27dca158067ab3a2d5688ac0a2325185143245f1665582

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\Temp\Error.exe

Filesize
488KB

MD5
efddb8393687829b125b575f9058804b

SHA1
a6146d0d4aaacc16c42fc6a1846b7d2989a61469

SHA256
9cef5b1457c51099cc4c3672dd394c5a03770a830b4a89cf95f58037c08350e1

SHA512
8e8bf6e154101e2cbbfb2be05c5bf5ce2b37bb477b9902f2ebdc3499613edb6bbfd577a019a617d672d5bdd2c3855effc53dcdbe59a8edaafbb7de8e02a39bed

Download Submit
C:\Users\Admin\AppData\Local\Temp\OQ9.exe

Filesize
2.4MB

MD5
f31f7e933b0c2f008fe6fb4ba26ee217

SHA1
972966e88349f85fe83d7aa1ffac8760e5b0dec9

SHA256
168eff65e316981b6b577a2d6e666b59a2e9ab4db404211d9a8d03054b63872f

SHA512
44a2189de0ec67bc2049590a9d415ba416fb67f3faa5bfd186f07e6651e3a6ff1864d5b8a3a9426946e05f8207dedf44b617175ffa3e409fab585d67d0765778

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fphsltkc.cz1.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/212-27-0x000001D8DB740000-0x000001D8DB762000-memory.dmp

Filesize
136KB

Download
memory/1144-22-0x0000025CBF7F0000-0x0000025CBF870000-memory.dmp

Filesize
512KB

Download
memory/1144-26-0x00007FFCD9870000-0x00007FFCDA331000-memory.dmp

Filesize
10.8MB

Download
memory/1144-25-0x00007FFCD9870000-0x00007FFCDA331000-memory.dmp

Filesize
10.8MB

Download
memory/1144-53-0x0000025CD9F60000-0x0000025CD9FD6000-memory.dmp

Filesize
472KB

Download
memory/1144-54-0x0000025CD9FE0000-0x0000025CDA030000-memory.dmp

Filesize
320KB

Download
memory/1144-55-0x0000025CD9EF0000-0x0000025CD9F0E000-memory.dmp

Filesize
120KB

Download
memory/1144-92-0x0000025CD9F30000-0x0000025CD9F3A000-memory.dmp

Filesize
40KB

Download
memory/1144-93-0x0000025CDA130000-0x0000025CDA142000-memory.dmp

Filesize
72KB

Download
memory/1144-113-0x00007FFCD9870000-0x00007FFCDA331000-memory.dmp

Filesize
10.8MB

Download
memory/3588-24-0x00007FFCD9870000-0x00007FFCDA331000-memory.dmp

Filesize
10.8MB

Download
memory/3588-0-0x00007FFCD9873000-0x00007FFCD9875000-memory.dmp

Filesize
8KB

Download
memory/3588-3-0x00007FFCD9870000-0x00007FFCDA331000-memory.dmp

Filesize
10.8MB

Download
memory/3588-1-0x0000000000F80000-0x0000000001128000-memory.dmp

Filesize
1.7MB

Download