umbral | 435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19-09-2024 08:34

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General

Target

435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe
Size

231KB
MD5

3b915b9bbc5ddf429f85bf939febe424
SHA1

2278baaf3764a27bc962de75601f4d49b2191592
SHA256

435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92
SHA512

d83341bf784bed732bf120299824ea066f66f505b6dd0fb0b84396af34877a1ba0c483c805835179be2463dd34503b31260035e78f47ca1396305f60f2be50ed
SSDEEP

6144:xloZM+rIkd8g+EtXHkv/iD4LmfzMOsTPkPFQu//OPub8e1mt6i:DoZtL+EP8LwzMOsTPkPFQu//OKO/

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/2732-1-0x00000210E7330000-0x00000210E7370000-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
3160	powershell.exe
4584	powershell.exe
3092	powershell.exe
2708	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.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
25	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
2064	PING.EXE
764	cmd.exe

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4516	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2064	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
2732	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe
2708	powershell.exe
2708	powershell.exe
4584	powershell.exe
4584	powershell.exe
3092	powershell.exe
3092	powershell.exe
1672	powershell.exe
1672	powershell.exe
3160	powershell.exe
3160	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2732	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe
Token: SeIncreaseQuotaPrivilege	4884	wmic.exe
Token: SeSecurityPrivilege	4884	wmic.exe
Token: SeTakeOwnershipPrivilege	4884	wmic.exe
Token: SeLoadDriverPrivilege	4884	wmic.exe
Token: SeSystemProfilePrivilege	4884	wmic.exe
Token: SeSystemtimePrivilege	4884	wmic.exe
Token: SeProfSingleProcessPrivilege	4884	wmic.exe
Token: SeIncBasePriorityPrivilege	4884	wmic.exe
Token: SeCreatePagefilePrivilege	4884	wmic.exe
Token: SeBackupPrivilege	4884	wmic.exe
Token: SeRestorePrivilege	4884	wmic.exe
Token: SeShutdownPrivilege	4884	wmic.exe
Token: SeDebugPrivilege	4884	wmic.exe
Token: SeSystemEnvironmentPrivilege	4884	wmic.exe
Token: SeRemoteShutdownPrivilege	4884	wmic.exe
Token: SeUndockPrivilege	4884	wmic.exe
Token: SeManageVolumePrivilege	4884	wmic.exe
Token: 33	4884	wmic.exe
Token: 34	4884	wmic.exe
Token: 35	4884	wmic.exe
Token: 36	4884	wmic.exe
Token: SeIncreaseQuotaPrivilege	4884	wmic.exe
Token: SeSecurityPrivilege	4884	wmic.exe
Token: SeTakeOwnershipPrivilege	4884	wmic.exe
Token: SeLoadDriverPrivilege	4884	wmic.exe
Token: SeSystemProfilePrivilege	4884	wmic.exe
Token: SeSystemtimePrivilege	4884	wmic.exe
Token: SeProfSingleProcessPrivilege	4884	wmic.exe
Token: SeIncBasePriorityPrivilege	4884	wmic.exe
Token: SeCreatePagefilePrivilege	4884	wmic.exe
Token: SeBackupPrivilege	4884	wmic.exe
Token: SeRestorePrivilege	4884	wmic.exe
Token: SeShutdownPrivilege	4884	wmic.exe
Token: SeDebugPrivilege	4884	wmic.exe
Token: SeSystemEnvironmentPrivilege	4884	wmic.exe
Token: SeRemoteShutdownPrivilege	4884	wmic.exe
Token: SeUndockPrivilege	4884	wmic.exe
Token: SeManageVolumePrivilege	4884	wmic.exe
Token: 33	4884	wmic.exe
Token: 34	4884	wmic.exe
Token: 35	4884	wmic.exe
Token: 36	4884	wmic.exe
Token: SeDebugPrivilege	2708	powershell.exe
Token: SeDebugPrivilege	4584	powershell.exe
Token: SeDebugPrivilege	3092	powershell.exe
Token: SeDebugPrivilege	1672	powershell.exe
Token: SeIncreaseQuotaPrivilege	4544	wmic.exe
Token: SeSecurityPrivilege	4544	wmic.exe
Token: SeTakeOwnershipPrivilege	4544	wmic.exe
Token: SeLoadDriverPrivilege	4544	wmic.exe
Token: SeSystemProfilePrivilege	4544	wmic.exe
Token: SeSystemtimePrivilege	4544	wmic.exe
Token: SeProfSingleProcessPrivilege	4544	wmic.exe
Token: SeIncBasePriorityPrivilege	4544	wmic.exe
Token: SeCreatePagefilePrivilege	4544	wmic.exe
Token: SeBackupPrivilege	4544	wmic.exe
Token: SeRestorePrivilege	4544	wmic.exe
Token: SeShutdownPrivilege	4544	wmic.exe
Token: SeDebugPrivilege	4544	wmic.exe
Token: SeSystemEnvironmentPrivilege	4544	wmic.exe
Token: SeRemoteShutdownPrivilege	4544	wmic.exe
Token: SeUndockPrivilege	4544	wmic.exe
Token: SeManageVolumePrivilege	4544	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2732 wrote to memory of 4884	2732	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	82
PID 2732 wrote to memory of 4884	2732	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	82
PID 2732 wrote to memory of 3920	2732	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	85
PID 2732 wrote to memory of 3920	2732	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	85
PID 2732 wrote to memory of 2708	2732	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	87
PID 2732 wrote to memory of 2708	2732	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	87
PID 2732 wrote to memory of 4584	2732	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	89
PID 2732 wrote to memory of 4584	2732	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	89
PID 2732 wrote to memory of 3092	2732	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	91
PID 2732 wrote to memory of 3092	2732	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	91
PID 2732 wrote to memory of 1672	2732	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	93
PID 2732 wrote to memory of 1672	2732	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	93
PID 2732 wrote to memory of 4544	2732	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	97
PID 2732 wrote to memory of 4544	2732	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	97
PID 2732 wrote to memory of 4888	2732	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	99
PID 2732 wrote to memory of 4888	2732	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	99
PID 2732 wrote to memory of 220	2732	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	102
PID 2732 wrote to memory of 220	2732	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	102
PID 2732 wrote to memory of 3160	2732	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	104
PID 2732 wrote to memory of 3160	2732	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	104
PID 2732 wrote to memory of 4516	2732	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	106
PID 2732 wrote to memory of 4516	2732	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	106
PID 2732 wrote to memory of 764	2732	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	108
PID 2732 wrote to memory of 764	2732	435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe	108
PID 764 wrote to memory of 2064	764	cmd.exe	110
PID 764 wrote to memory of 2064	764	cmd.exe	110

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3920	attrib.exe

C:\Users\Admin\AppData\Local\Temp\435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe
"C:\Users\Admin\AppData\Local\Temp\435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2732
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4884
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe"
  2⤵
  - Views/modifies file attributes
  PID:3920
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2708
- 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:4584
- 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:3092
- 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:1672
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4544
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:4888
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:220
- 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:3160
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4516
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\435a2c3b87a6d4e96690d2aae112660823dc52740222c85a80e5f01e9910ee92.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:764
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2064

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
6d3e9c29fe44e90aae6ed30ccf799ca8

SHA1
c7974ef72264bbdf13a2793ccf1aed11bc565dce

SHA256
2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

SHA512
60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

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

Filesize
948B

MD5
74a6b79d36b4aae8b027a218bc6e1af7

SHA1
0350e46c1df6934903c4820a00b0bc4721779e5f

SHA256
60c64f6803d7ad1408d0a8628100470859b16ef332d5f1bd8bb2debe51251d04

SHA512
60e71435a9a23f4c144d641844f4182ddc9aa4ccd3e99232149a187112dce96458aab9587e9fea46f5dc5a52f5ca758969a04657a2b5b10241d3e4554f7c85e0

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
45ad40f012b09e141955482368549640

SHA1
3f9cd15875c1e397c3b2b5592805577ae88a96cb

SHA256
ea3b59172f1a33677f9cb3843fb4d6093b806d3a7cf2f3c6d4692f5421f656ce

SHA512
3de08f8affca1c1450088f560776cf3d65146cadac43c06eb922c7b3cea436e519966cf38458303ffeb1a58c53f8952cffda6c34216fda7594e014b516e83b33

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_taapru1t.qud.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2708-5-0x00007FFD5E170000-0x00007FFD5EC31000-memory.dmp

Filesize
10.8MB

Download
memory/2708-4-0x000001E25B050000-0x000001E25B072000-memory.dmp

Filesize
136KB

Download
memory/2708-15-0x00007FFD5E170000-0x00007FFD5EC31000-memory.dmp

Filesize
10.8MB

Download
memory/2708-18-0x00007FFD5E170000-0x00007FFD5EC31000-memory.dmp

Filesize
10.8MB

Download
memory/2708-3-0x00007FFD5E170000-0x00007FFD5EC31000-memory.dmp

Filesize
10.8MB

Download
memory/2732-34-0x00000210E9AE0000-0x00000210E9B30000-memory.dmp

Filesize
320KB

Download
memory/2732-33-0x00000210E9A60000-0x00000210E9AD6000-memory.dmp

Filesize
472KB

Download
memory/2732-35-0x00000210E9B50000-0x00000210E9B6E000-memory.dmp

Filesize
120KB

Download
memory/2732-1-0x00000210E7330000-0x00000210E7370000-memory.dmp

Filesize
256KB

Download
memory/2732-0-0x00007FFD5E173000-0x00007FFD5E175000-memory.dmp

Filesize
8KB

Download
memory/2732-71-0x00000210E9A00000-0x00000210E9A0A000-memory.dmp

Filesize
40KB

Download
memory/2732-72-0x00000210E9A30000-0x00000210E9A42000-memory.dmp

Filesize
72KB

Download
memory/2732-2-0x00007FFD5E170000-0x00007FFD5EC31000-memory.dmp

Filesize
10.8MB

Download
memory/2732-90-0x00007FFD5E170000-0x00007FFD5EC31000-memory.dmp

Filesize
10.8MB

Download