umbral | 1fdd74b8ece8754712fe0ccc0104a61bf6469174d628f66cd87d9e1249fa5707

Analysis

max time kernel
30s
max time network
21s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04/12/2024, 06:09

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General

Target

HotmailChecker/Data/Modules/Checker.exe
Size

487KB
MD5

bbf26eaf97edcdc7d55df2c17f33ba64
SHA1

03fa144cdbf85c5ed783f894f801234836d080e9
SHA256

3686fdc29551a6f3c5df38017e8fea2efdcac7dac7b91be78c6fdbfcfd48ee4b
SHA512

67e901df80916c3d8328be210847fbacae67bbb14fd4b2e629aaae200837ede5e7acd605a0054b158944bb1aeb65b4ec861a9882a4ec13260657757393618419
SSDEEP

6144:TloZM+rIkd8g+EtXHkv/iD4712hAmB5KB/Cwhl0mBib8e1m+BJiBN1C4q1q6NO+h:RoZtL+EP8712hAmB5KB/Cwhl0Zzq9LQ

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/2180-1-0x000001E0F7970000-0x000001E0F79F0000-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
2552	powershell.exe
1556	powershell.exe
2344	powershell.exe
2476	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	Checker.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
22	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
7	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
1052	cmd.exe
1392	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4256	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1392	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
2180	Checker.exe
2552	powershell.exe
2552	powershell.exe
1556	powershell.exe
1556	powershell.exe
2344	powershell.exe
2344	powershell.exe
2704	powershell.exe
2704	powershell.exe
2476	powershell.exe
2476	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2180	Checker.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	2552	powershell.exe
Token: SeDebugPrivilege	1556	powershell.exe
Token: SeDebugPrivilege	2344	powershell.exe
Token: SeDebugPrivilege	2704	powershell.exe
Token: SeIncreaseQuotaPrivilege	1776	wmic.exe
Token: SeSecurityPrivilege	1776	wmic.exe
Token: SeTakeOwnershipPrivilege	1776	wmic.exe
Token: SeLoadDriverPrivilege	1776	wmic.exe
Token: SeSystemProfilePrivilege	1776	wmic.exe
Token: SeSystemtimePrivilege	1776	wmic.exe
Token: SeProfSingleProcessPrivilege	1776	wmic.exe
Token: SeIncBasePriorityPrivilege	1776	wmic.exe
Token: SeCreatePagefilePrivilege	1776	wmic.exe
Token: SeBackupPrivilege	1776	wmic.exe
Token: SeRestorePrivilege	1776	wmic.exe
Token: SeShutdownPrivilege	1776	wmic.exe
Token: SeDebugPrivilege	1776	wmic.exe
Token: SeSystemEnvironmentPrivilege	1776	wmic.exe
Token: SeRemoteShutdownPrivilege	1776	wmic.exe
Token: SeUndockPrivilege	1776	wmic.exe
Token: SeManageVolumePrivilege	1776	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2180 wrote to memory of 4060	2180	Checker.exe	82
PID 2180 wrote to memory of 4060	2180	Checker.exe	82
PID 2180 wrote to memory of 3512	2180	Checker.exe	85
PID 2180 wrote to memory of 3512	2180	Checker.exe	85
PID 2180 wrote to memory of 2552	2180	Checker.exe	87
PID 2180 wrote to memory of 2552	2180	Checker.exe	87
PID 2180 wrote to memory of 1556	2180	Checker.exe	89
PID 2180 wrote to memory of 1556	2180	Checker.exe	89
PID 2180 wrote to memory of 2344	2180	Checker.exe	91
PID 2180 wrote to memory of 2344	2180	Checker.exe	91
PID 2180 wrote to memory of 2704	2180	Checker.exe	93
PID 2180 wrote to memory of 2704	2180	Checker.exe	93
PID 2180 wrote to memory of 1776	2180	Checker.exe	95
PID 2180 wrote to memory of 1776	2180	Checker.exe	95
PID 2180 wrote to memory of 4300	2180	Checker.exe	97
PID 2180 wrote to memory of 4300	2180	Checker.exe	97
PID 2180 wrote to memory of 1824	2180	Checker.exe	99
PID 2180 wrote to memory of 1824	2180	Checker.exe	99
PID 2180 wrote to memory of 2476	2180	Checker.exe	101
PID 2180 wrote to memory of 2476	2180	Checker.exe	101
PID 2180 wrote to memory of 4256	2180	Checker.exe	103
PID 2180 wrote to memory of 4256	2180	Checker.exe	103
PID 2180 wrote to memory of 1052	2180	Checker.exe	105
PID 2180 wrote to memory of 1052	2180	Checker.exe	105
PID 1052 wrote to memory of 1392	1052	cmd.exe	107
PID 1052 wrote to memory of 1392	1052	cmd.exe	107

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3512	attrib.exe

C:\Users\Admin\AppData\Local\Temp\HotmailChecker\Data\Modules\Checker.exe
"C:\Users\Admin\AppData\Local\Temp\HotmailChecker\Data\Modules\Checker.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2180
- 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\HotmailChecker\Data\Modules\Checker.exe"
  2⤵
  - Views/modifies file attributes
  PID:3512
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\HotmailChecker\Data\Modules\Checker.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2552
- 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:1556
- 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:2344
- 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:2704
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1776
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:4300
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1824
- 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:2476
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4256
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\HotmailChecker\Data\Modules\Checker.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1052
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1392

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
627deabb4703797ece516ffff56dff63

SHA1
a73aad49150b7daf33c81fdb3d03104dcf98e10e

SHA256
fa203b9c836b5783d582900b5a1e65dc21fbf2ff25af63c41f9272ea930d8473

SHA512
0b44ed0301024c9b19fc0b5c73048b37142121628be818888970c9c3f3a71a75731e27791302e42347d9630c4ba446d02b07af723570f9813f86736b3c2582c3

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

Filesize
1KB

MD5
d3235ed022a42ec4338123ab87144afa

SHA1
5058608bc0deb720a585a2304a8f7cf63a50a315

SHA256
10663f5a1cb0afe5578f61ebaae2aafb363544e47b48521f9c23be9e6e431b27

SHA512
236761b7c68feca8bd62cba90cff0b25fac5613837aaa5d29ae823ace8b06a2057553cf7e72b11ccc59b6c289e471ca1bbac1a880aef5e2868875371a17c1abf

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

Filesize
1KB

MD5
997d2bcd9b60c4e184660560a16f7666

SHA1
fadd05b7c009f39656c410577b509efb3462f16f

SHA256
cc47bb0c24dbfa4b9b949f6f3ebba5277cde538ccdd1b02c2dc014ecad0c3a7b

SHA512
d5baaa19ba03a47662a957a28fe8f3d6ae520d1182685c724ea4175b95c29f4892b54a11f02b444cd603e4ac87550e9f8782cd324562da19d78310c34a933c1e

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0ezffres.zjp.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2180-73-0x000001E0FA2A0000-0x000001E0FA2AA000-memory.dmp

Filesize
40KB

Download
memory/2180-74-0x000001E0FA2D0000-0x000001E0FA2E2000-memory.dmp

Filesize
72KB

Download
memory/2180-90-0x00007FFD7FAC3000-0x00007FFD7FAC5000-memory.dmp

Filesize
8KB

Download
memory/2180-95-0x00007FFD7FAC0000-0x00007FFD80581000-memory.dmp

Filesize
10.8MB

Download
memory/2180-2-0x00007FFD7FAC0000-0x00007FFD80581000-memory.dmp

Filesize
10.8MB

Download
memory/2180-33-0x000001E0FA0D0000-0x000001E0FA146000-memory.dmp

Filesize
472KB

Download
memory/2180-34-0x000001E0FA150000-0x000001E0FA1A0000-memory.dmp

Filesize
320KB

Download
memory/2180-35-0x000001E0FA090000-0x000001E0FA0AE000-memory.dmp

Filesize
120KB

Download
memory/2180-1-0x000001E0F7970000-0x000001E0F79F0000-memory.dmp

Filesize
512KB

Download
memory/2180-0-0x00007FFD7FAC3000-0x00007FFD7FAC5000-memory.dmp

Filesize
8KB

Download
memory/2344-59-0x000001E4B2190000-0x000001E4B23AC000-memory.dmp

Filesize
2.1MB

Download
memory/2552-18-0x00007FFD7FAC0000-0x00007FFD80581000-memory.dmp

Filesize
10.8MB

Download
memory/2552-15-0x00007FFD7FAC0000-0x00007FFD80581000-memory.dmp

Filesize
10.8MB

Download
memory/2552-10-0x00000289352A0000-0x00000289352C2000-memory.dmp

Filesize
136KB

Download
memory/2552-4-0x00007FFD7FAC0000-0x00007FFD80581000-memory.dmp

Filesize
10.8MB

Download
memory/2552-3-0x00007FFD7FAC0000-0x00007FFD80581000-memory.dmp

Filesize
10.8MB

Download