umbral | 733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277

Analysis

max time kernel
94s
max time network
97s
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 03:25

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General

Target

733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.exe
Size

227KB
MD5

a9c85ce4900aa26ca173db8d18423290
SHA1

913ff9008ac363798994a5db576357623c3abb6b
SHA256

733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277
SHA512

2d2eb846ea057068ce639c39494adea686bbc76b7cce0eb4c0ea7396f0048bb3fafe3d9b24421d906d321576b8f3ac6517d4fa69886fecf958690b8fdf844cc9
SSDEEP

6144:eloZM+rIkd8g+EtXHkv/iD4mI1UOsTPkhFQu//O6vb8e1m0Li:IoZtL+EP8mI1UOsTPkhFQu//OAg

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/1228-1-0x0000028F48E90000-0x0000028F48ED0000-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
1756	powershell.exe
5084	powershell.exe
400	powershell.exe
3360	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.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
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
9	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
1116	PING.EXE
2960	cmd.exe

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2188	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1116	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
1228	733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.exe
1756	powershell.exe
1756	powershell.exe
5084	powershell.exe
5084	powershell.exe
400	powershell.exe
400	powershell.exe
3540	powershell.exe
3540	powershell.exe
3360	powershell.exe
3360	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1228	733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.exe
Token: SeIncreaseQuotaPrivilege	392	wmic.exe
Token: SeSecurityPrivilege	392	wmic.exe
Token: SeTakeOwnershipPrivilege	392	wmic.exe
Token: SeLoadDriverPrivilege	392	wmic.exe
Token: SeSystemProfilePrivilege	392	wmic.exe
Token: SeSystemtimePrivilege	392	wmic.exe
Token: SeProfSingleProcessPrivilege	392	wmic.exe
Token: SeIncBasePriorityPrivilege	392	wmic.exe
Token: SeCreatePagefilePrivilege	392	wmic.exe
Token: SeBackupPrivilege	392	wmic.exe
Token: SeRestorePrivilege	392	wmic.exe
Token: SeShutdownPrivilege	392	wmic.exe
Token: SeDebugPrivilege	392	wmic.exe
Token: SeSystemEnvironmentPrivilege	392	wmic.exe
Token: SeRemoteShutdownPrivilege	392	wmic.exe
Token: SeUndockPrivilege	392	wmic.exe
Token: SeManageVolumePrivilege	392	wmic.exe
Token: 33	392	wmic.exe
Token: 34	392	wmic.exe
Token: 35	392	wmic.exe
Token: 36	392	wmic.exe
Token: SeIncreaseQuotaPrivilege	392	wmic.exe
Token: SeSecurityPrivilege	392	wmic.exe
Token: SeTakeOwnershipPrivilege	392	wmic.exe
Token: SeLoadDriverPrivilege	392	wmic.exe
Token: SeSystemProfilePrivilege	392	wmic.exe
Token: SeSystemtimePrivilege	392	wmic.exe
Token: SeProfSingleProcessPrivilege	392	wmic.exe
Token: SeIncBasePriorityPrivilege	392	wmic.exe
Token: SeCreatePagefilePrivilege	392	wmic.exe
Token: SeBackupPrivilege	392	wmic.exe
Token: SeRestorePrivilege	392	wmic.exe
Token: SeShutdownPrivilege	392	wmic.exe
Token: SeDebugPrivilege	392	wmic.exe
Token: SeSystemEnvironmentPrivilege	392	wmic.exe
Token: SeRemoteShutdownPrivilege	392	wmic.exe
Token: SeUndockPrivilege	392	wmic.exe
Token: SeManageVolumePrivilege	392	wmic.exe
Token: 33	392	wmic.exe
Token: 34	392	wmic.exe
Token: 35	392	wmic.exe
Token: 36	392	wmic.exe
Token: SeDebugPrivilege	1756	powershell.exe
Token: SeDebugPrivilege	5084	powershell.exe
Token: SeDebugPrivilege	400	powershell.exe
Token: SeDebugPrivilege	3540	powershell.exe
Token: SeIncreaseQuotaPrivilege	3348	wmic.exe
Token: SeSecurityPrivilege	3348	wmic.exe
Token: SeTakeOwnershipPrivilege	3348	wmic.exe
Token: SeLoadDriverPrivilege	3348	wmic.exe
Token: SeSystemProfilePrivilege	3348	wmic.exe
Token: SeSystemtimePrivilege	3348	wmic.exe
Token: SeProfSingleProcessPrivilege	3348	wmic.exe
Token: SeIncBasePriorityPrivilege	3348	wmic.exe
Token: SeCreatePagefilePrivilege	3348	wmic.exe
Token: SeBackupPrivilege	3348	wmic.exe
Token: SeRestorePrivilege	3348	wmic.exe
Token: SeShutdownPrivilege	3348	wmic.exe
Token: SeDebugPrivilege	3348	wmic.exe
Token: SeSystemEnvironmentPrivilege	3348	wmic.exe
Token: SeRemoteShutdownPrivilege	3348	wmic.exe
Token: SeUndockPrivilege	3348	wmic.exe
Token: SeManageVolumePrivilege	3348	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1228 wrote to memory of 392	1228	733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.exe	82
PID 1228 wrote to memory of 392	1228	733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.exe	82
PID 1228 wrote to memory of 2260	1228	733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.exe	85
PID 1228 wrote to memory of 2260	1228	733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.exe	85
PID 1228 wrote to memory of 1756	1228	733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.exe	87
PID 1228 wrote to memory of 1756	1228	733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.exe	87
PID 1228 wrote to memory of 5084	1228	733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.exe	89
PID 1228 wrote to memory of 5084	1228	733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.exe	89
PID 1228 wrote to memory of 400	1228	733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.exe	91
PID 1228 wrote to memory of 400	1228	733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.exe	91
PID 1228 wrote to memory of 3540	1228	733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.exe	93
PID 1228 wrote to memory of 3540	1228	733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.exe	93
PID 1228 wrote to memory of 3348	1228	733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.exe	97
PID 1228 wrote to memory of 3348	1228	733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.exe	97
PID 1228 wrote to memory of 464	1228	733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.exe	100
PID 1228 wrote to memory of 464	1228	733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.exe	100
PID 1228 wrote to memory of 3736	1228	733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.exe	102
PID 1228 wrote to memory of 3736	1228	733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.exe	102
PID 1228 wrote to memory of 3360	1228	733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.exe	104
PID 1228 wrote to memory of 3360	1228	733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.exe	104
PID 1228 wrote to memory of 2188	1228	733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.exe	106
PID 1228 wrote to memory of 2188	1228	733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.exe	106
PID 1228 wrote to memory of 2960	1228	733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.exe	108
PID 1228 wrote to memory of 2960	1228	733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.exe	108
PID 2960 wrote to memory of 1116	2960	cmd.exe	110
PID 2960 wrote to memory of 1116	2960	cmd.exe	110

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2260	attrib.exe

C:\Users\Admin\AppData\Local\Temp\733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.exe
"C:\Users\Admin\AppData\Local\Temp\733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1228
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:392
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.exe"
  2⤵
  - Views/modifies file attributes
  PID:2260
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1756
- 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:5084
- 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:400
- 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:3540
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3348
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:464
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3736
- 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:3360
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2188
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\733c9f0a21cb6a4386496fa43fd1b2255e07adec398ea5a296523ffbacf83277N.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2960
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1116

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
39c2ac09b52b0685c7da5b25746d8a64

SHA1
c0ac1559da69dc9ad0496c11ce37ef9b907ea656

SHA256
c582429e23c81918907db9c7f32bef2d32c873f2da84fa450707482408e3a160

SHA512
9a6f4c5944cecdd6cf2114f7db583e4742a93b3c9eec6fd60328585370a8ba2f917f7ce689c0341d2dbf391f58ff34ee0088d9d2158ebb2450c547257da095a1

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

Filesize
1KB

MD5
88be3bc8a7f90e3953298c0fdbec4d72

SHA1
f4969784ad421cc80ef45608727aacd0f6bf2e4b

SHA256
533c8470b41084e40c5660569ebbdb7496520d449629a235e8053e84025f348a

SHA512
4fce64e2dacddbc03314048fef1ce356ee2647c14733da121c23c65507eeb8d721d6b690ad5463319b364dc4fa95904ad6ab096907f32918e3406ef438a6ef7c

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

Filesize
1KB

MD5
369b89e3801fb1c3df3a7527516edea6

SHA1
1dcf07320cbe1911d7138f4287b20e90e8f2bc25

SHA256
18b86f2340bc1547cc647693777444a0788551baee5989b0f8b186b8109f291c

SHA512
c819d002f42629c97a26f4e81c10a4c8a6b20a4bbfa269306675badaa7828740b80fe6c31945fc6f4c06ad812c1f04c6cc37ac62cb59ed9c0af22a819b259d87

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_x3q5wmmg.kcm.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1228-71-0x0000028F4ACA0000-0x0000028F4ACAA000-memory.dmp

Filesize
40KB

Download
memory/1228-35-0x0000028F49350000-0x0000028F4936E000-memory.dmp

Filesize
120KB

Download
memory/1228-90-0x00007FFDDFB40000-0x00007FFDE0601000-memory.dmp

Filesize
10.8MB

Download
memory/1228-72-0x0000028F637D0000-0x0000028F637E2000-memory.dmp

Filesize
72KB

Download
memory/1228-2-0x00007FFDDFB40000-0x00007FFDE0601000-memory.dmp

Filesize
10.8MB

Download
memory/1228-34-0x0000028F4AC50000-0x0000028F4ACA0000-memory.dmp

Filesize
320KB

Download
memory/1228-33-0x0000028F633F0000-0x0000028F63466000-memory.dmp

Filesize
472KB

Download
memory/1228-0-0x00007FFDDFB43000-0x00007FFDDFB45000-memory.dmp

Filesize
8KB

Download
memory/1228-1-0x0000028F48E90000-0x0000028F48ED0000-memory.dmp

Filesize
256KB

Download
memory/1756-15-0x00007FFDDFB40000-0x00007FFDE0601000-memory.dmp

Filesize
10.8MB

Download
memory/1756-9-0x000002A7F93C0000-0x000002A7F93E2000-memory.dmp

Filesize
136KB

Download
memory/1756-3-0x00007FFDDFB40000-0x00007FFDE0601000-memory.dmp

Filesize
10.8MB

Download
memory/1756-14-0x00007FFDDFB40000-0x00007FFDE0601000-memory.dmp

Filesize
10.8MB

Download
memory/1756-18-0x00007FFDDFB40000-0x00007FFDE0601000-memory.dmp

Filesize
10.8MB

Download