umbral | a8c74a05f574514ec74cb942ec0ff1d5380da648e145ba829dec4cc511ec4cd7

Analysis

max time kernel
140s
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
29-08-2024 05:25

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General

Target

5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe
Size

229KB
MD5

eabe2a81aa3dabab25e49ee4b36ce075
SHA1

f55b6298f0a8330d90d39e20a73adb2e828dfd1c
SHA256

5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686
SHA512

9688119150d3a466d9a12bfc55933d367104747a2cf319467a78dfcf975361c9e2727f76efe380db9d0c92c39dc4b0241bfb444e965e92720c9edcf42c1d18fe
SSDEEP

6144:lloZM+rIkd8g+EtXHkv/iD4Wn0IZHMgPou35EwFyov28e1mpi:noZtL+EP8Wn0IZHMgPou35EwFm1

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/2148-1-0x000001E586000000-0x000001E586040000-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
5084	powershell.exe
4660	powershell.exe
3004	powershell.exe
2120	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.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
24	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
4300	cmd.exe
4292	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2644	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4292	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
2148	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe
5084	powershell.exe
5084	powershell.exe
4660	powershell.exe
4660	powershell.exe
3004	powershell.exe
3004	powershell.exe
4708	powershell.exe
4708	powershell.exe
2120	powershell.exe
2120	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2148	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe
Token: SeIncreaseQuotaPrivilege	4840	wmic.exe
Token: SeSecurityPrivilege	4840	wmic.exe
Token: SeTakeOwnershipPrivilege	4840	wmic.exe
Token: SeLoadDriverPrivilege	4840	wmic.exe
Token: SeSystemProfilePrivilege	4840	wmic.exe
Token: SeSystemtimePrivilege	4840	wmic.exe
Token: SeProfSingleProcessPrivilege	4840	wmic.exe
Token: SeIncBasePriorityPrivilege	4840	wmic.exe
Token: SeCreatePagefilePrivilege	4840	wmic.exe
Token: SeBackupPrivilege	4840	wmic.exe
Token: SeRestorePrivilege	4840	wmic.exe
Token: SeShutdownPrivilege	4840	wmic.exe
Token: SeDebugPrivilege	4840	wmic.exe
Token: SeSystemEnvironmentPrivilege	4840	wmic.exe
Token: SeRemoteShutdownPrivilege	4840	wmic.exe
Token: SeUndockPrivilege	4840	wmic.exe
Token: SeManageVolumePrivilege	4840	wmic.exe
Token: 33	4840	wmic.exe
Token: 34	4840	wmic.exe
Token: 35	4840	wmic.exe
Token: 36	4840	wmic.exe
Token: SeIncreaseQuotaPrivilege	4840	wmic.exe
Token: SeSecurityPrivilege	4840	wmic.exe
Token: SeTakeOwnershipPrivilege	4840	wmic.exe
Token: SeLoadDriverPrivilege	4840	wmic.exe
Token: SeSystemProfilePrivilege	4840	wmic.exe
Token: SeSystemtimePrivilege	4840	wmic.exe
Token: SeProfSingleProcessPrivilege	4840	wmic.exe
Token: SeIncBasePriorityPrivilege	4840	wmic.exe
Token: SeCreatePagefilePrivilege	4840	wmic.exe
Token: SeBackupPrivilege	4840	wmic.exe
Token: SeRestorePrivilege	4840	wmic.exe
Token: SeShutdownPrivilege	4840	wmic.exe
Token: SeDebugPrivilege	4840	wmic.exe
Token: SeSystemEnvironmentPrivilege	4840	wmic.exe
Token: SeRemoteShutdownPrivilege	4840	wmic.exe
Token: SeUndockPrivilege	4840	wmic.exe
Token: SeManageVolumePrivilege	4840	wmic.exe
Token: 33	4840	wmic.exe
Token: 34	4840	wmic.exe
Token: 35	4840	wmic.exe
Token: 36	4840	wmic.exe
Token: SeDebugPrivilege	5084	powershell.exe
Token: SeDebugPrivilege	4660	powershell.exe
Token: SeDebugPrivilege	3004	powershell.exe
Token: SeDebugPrivilege	4708	powershell.exe
Token: SeIncreaseQuotaPrivilege	1896	wmic.exe
Token: SeSecurityPrivilege	1896	wmic.exe
Token: SeTakeOwnershipPrivilege	1896	wmic.exe
Token: SeLoadDriverPrivilege	1896	wmic.exe
Token: SeSystemProfilePrivilege	1896	wmic.exe
Token: SeSystemtimePrivilege	1896	wmic.exe
Token: SeProfSingleProcessPrivilege	1896	wmic.exe
Token: SeIncBasePriorityPrivilege	1896	wmic.exe
Token: SeCreatePagefilePrivilege	1896	wmic.exe
Token: SeBackupPrivilege	1896	wmic.exe
Token: SeRestorePrivilege	1896	wmic.exe
Token: SeShutdownPrivilege	1896	wmic.exe
Token: SeDebugPrivilege	1896	wmic.exe
Token: SeSystemEnvironmentPrivilege	1896	wmic.exe
Token: SeRemoteShutdownPrivilege	1896	wmic.exe
Token: SeUndockPrivilege	1896	wmic.exe
Token: SeManageVolumePrivilege	1896	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2148 wrote to memory of 4840	2148	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	85
PID 2148 wrote to memory of 4840	2148	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	85
PID 2148 wrote to memory of 1348	2148	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	90
PID 2148 wrote to memory of 1348	2148	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	90
PID 2148 wrote to memory of 5084	2148	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	92
PID 2148 wrote to memory of 5084	2148	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	92
PID 2148 wrote to memory of 4660	2148	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	94
PID 2148 wrote to memory of 4660	2148	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	94
PID 2148 wrote to memory of 3004	2148	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	98
PID 2148 wrote to memory of 3004	2148	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	98
PID 2148 wrote to memory of 4708	2148	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	100
PID 2148 wrote to memory of 4708	2148	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	100
PID 2148 wrote to memory of 1896	2148	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	103
PID 2148 wrote to memory of 1896	2148	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	103
PID 2148 wrote to memory of 2632	2148	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	105
PID 2148 wrote to memory of 2632	2148	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	105
PID 2148 wrote to memory of 1684	2148	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	107
PID 2148 wrote to memory of 1684	2148	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	107
PID 2148 wrote to memory of 2120	2148	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	109
PID 2148 wrote to memory of 2120	2148	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	109
PID 2148 wrote to memory of 2644	2148	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	111
PID 2148 wrote to memory of 2644	2148	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	111
PID 2148 wrote to memory of 4300	2148	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	114
PID 2148 wrote to memory of 4300	2148	5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe	114
PID 4300 wrote to memory of 4292	4300	cmd.exe	116
PID 4300 wrote to memory of 4292	4300	cmd.exe	116

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1348	attrib.exe

C:\Users\Admin\AppData\Local\Temp\5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe
"C:\Users\Admin\AppData\Local\Temp\5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2148
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4840
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe"
  2⤵
  - Views/modifies file attributes
  PID:1348
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe'
  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" 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:4660
- 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:3004
- 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:4708
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1896
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2632
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1684
- 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:2120
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2644
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\5b97b5644019cec44dded172780f30b049b82c8e8582a589ce95d7dec421a686.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4300
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4292

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
d28a889fd956d5cb3accfbaf1143eb6f

SHA1
157ba54b365341f8ff06707d996b3635da8446f7

SHA256
21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

SHA512
0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

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
88be3bc8a7f90e3953298c0fdbec4d72

SHA1
f4969784ad421cc80ef45608727aacd0f6bf2e4b

SHA256
533c8470b41084e40c5660569ebbdb7496520d449629a235e8053e84025f348a

SHA512
4fce64e2dacddbc03314048fef1ce356ee2647c14733da121c23c65507eeb8d721d6b690ad5463319b364dc4fa95904ad6ab096907f32918e3406ef438a6ef7c

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

Filesize
1KB

MD5
bb059cd5ec81445db881376f4c2d7eeb

SHA1
d36313ed7b12132106252009b2658a1c70fb1e87

SHA256
987d374beac33bedb33df17b602f2fdf5cdf81fa14f11dbbe606506efb8a74ad

SHA512
ce6f532e13d8353b3ad64be2d55df9600bb700dd8a4e1f8f16b1d52c416f97c7a71927a2165d74771ce7bb81dcdc33a7cf39d7f6b4dee5b9b36af22668262409

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_gtgl2rhs.3v5.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2148-71-0x000001E586650000-0x000001E58665A000-memory.dmp

Filesize
40KB

Download
memory/2148-35-0x000001E586600000-0x000001E58661E000-memory.dmp

Filesize
120KB

Download
memory/2148-90-0x00007FFA851C0000-0x00007FFA85C81000-memory.dmp

Filesize
10.8MB

Download
memory/2148-72-0x000001E5A0790000-0x000001E5A07A2000-memory.dmp

Filesize
72KB

Download
memory/2148-2-0x00007FFA851C0000-0x00007FFA85C81000-memory.dmp

Filesize
10.8MB

Download
memory/2148-33-0x000001E5A0810000-0x000001E5A0886000-memory.dmp

Filesize
472KB

Download
memory/2148-34-0x000001E5A0610000-0x000001E5A0660000-memory.dmp

Filesize
320KB

Download
memory/2148-0-0x00007FFA851C3000-0x00007FFA851C5000-memory.dmp

Filesize
8KB

Download
memory/2148-1-0x000001E586000000-0x000001E586040000-memory.dmp

Filesize
256KB

Download
memory/5084-14-0x0000017649ED0000-0x0000017649EF2000-memory.dmp

Filesize
136KB

Download
memory/5084-4-0x00007FFA851C0000-0x00007FFA85C81000-memory.dmp

Filesize
10.8MB

Download
memory/5084-3-0x00007FFA851C0000-0x00007FFA85C81000-memory.dmp

Filesize
10.8MB

Download
memory/5084-15-0x00007FFA851C0000-0x00007FFA85C81000-memory.dmp

Filesize
10.8MB

Download
memory/5084-18-0x00007FFA851C0000-0x00007FFA85C81000-memory.dmp

Filesize
10.8MB

Download