umbral | f7f74aeaf94b242f73f0417796f4814c1a857eaa246ebcb7a667643d90af938e

Analysis

max time kernel
35s
max time network
36s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
20-09-2024 10:21

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

upx.exe
Size

231KB
MD5

88b64c5cad0453a14347d415f9d4f82b
SHA1

4a613e651418497885bf4861dc27fee379eee1b9
SHA256

f7f74aeaf94b242f73f0417796f4814c1a857eaa246ebcb7a667643d90af938e
SHA512

56775a3ce0c99998c0354a5d7485fbaf01e83f247412849abd2d81461decf0e9c4fa095d43e18be74fe7225df2b6cbbc2f98f4abf5611192ef66d83abee2d7d2
SSDEEP

6144:bloZM+rIkd8g+EtXHkv/iD4irHJzZqStHY5rWWDIPb8e1m4i:5oZtL+EP8irHJzZqStHY5rWWD2y

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/3624-1-0x0000029226EC0000-0x0000029226F00000-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
1992	powershell.exe
2036	powershell.exe
1692	powershell.exe
3468	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	upx.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
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
6	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
4924	cmd.exe
4184	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3472	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4184	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
3624	upx.exe
3468	powershell.exe
3468	powershell.exe
2036	powershell.exe
2036	powershell.exe
1692	powershell.exe
1692	powershell.exe
2636	powershell.exe
2636	powershell.exe
1992	powershell.exe
1992	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3624	upx.exe
Token: SeIncreaseQuotaPrivilege	3188	wmic.exe
Token: SeSecurityPrivilege	3188	wmic.exe
Token: SeTakeOwnershipPrivilege	3188	wmic.exe
Token: SeLoadDriverPrivilege	3188	wmic.exe
Token: SeSystemProfilePrivilege	3188	wmic.exe
Token: SeSystemtimePrivilege	3188	wmic.exe
Token: SeProfSingleProcessPrivilege	3188	wmic.exe
Token: SeIncBasePriorityPrivilege	3188	wmic.exe
Token: SeCreatePagefilePrivilege	3188	wmic.exe
Token: SeBackupPrivilege	3188	wmic.exe
Token: SeRestorePrivilege	3188	wmic.exe
Token: SeShutdownPrivilege	3188	wmic.exe
Token: SeDebugPrivilege	3188	wmic.exe
Token: SeSystemEnvironmentPrivilege	3188	wmic.exe
Token: SeRemoteShutdownPrivilege	3188	wmic.exe
Token: SeUndockPrivilege	3188	wmic.exe
Token: SeManageVolumePrivilege	3188	wmic.exe
Token: 33	3188	wmic.exe
Token: 34	3188	wmic.exe
Token: 35	3188	wmic.exe
Token: 36	3188	wmic.exe
Token: SeIncreaseQuotaPrivilege	3188	wmic.exe
Token: SeSecurityPrivilege	3188	wmic.exe
Token: SeTakeOwnershipPrivilege	3188	wmic.exe
Token: SeLoadDriverPrivilege	3188	wmic.exe
Token: SeSystemProfilePrivilege	3188	wmic.exe
Token: SeSystemtimePrivilege	3188	wmic.exe
Token: SeProfSingleProcessPrivilege	3188	wmic.exe
Token: SeIncBasePriorityPrivilege	3188	wmic.exe
Token: SeCreatePagefilePrivilege	3188	wmic.exe
Token: SeBackupPrivilege	3188	wmic.exe
Token: SeRestorePrivilege	3188	wmic.exe
Token: SeShutdownPrivilege	3188	wmic.exe
Token: SeDebugPrivilege	3188	wmic.exe
Token: SeSystemEnvironmentPrivilege	3188	wmic.exe
Token: SeRemoteShutdownPrivilege	3188	wmic.exe
Token: SeUndockPrivilege	3188	wmic.exe
Token: SeManageVolumePrivilege	3188	wmic.exe
Token: 33	3188	wmic.exe
Token: 34	3188	wmic.exe
Token: 35	3188	wmic.exe
Token: 36	3188	wmic.exe
Token: SeDebugPrivilege	3468	powershell.exe
Token: SeDebugPrivilege	2036	powershell.exe
Token: SeDebugPrivilege	1692	powershell.exe
Token: SeDebugPrivilege	2636	powershell.exe
Token: SeIncreaseQuotaPrivilege	2188	wmic.exe
Token: SeSecurityPrivilege	2188	wmic.exe
Token: SeTakeOwnershipPrivilege	2188	wmic.exe
Token: SeLoadDriverPrivilege	2188	wmic.exe
Token: SeSystemProfilePrivilege	2188	wmic.exe
Token: SeSystemtimePrivilege	2188	wmic.exe
Token: SeProfSingleProcessPrivilege	2188	wmic.exe
Token: SeIncBasePriorityPrivilege	2188	wmic.exe
Token: SeCreatePagefilePrivilege	2188	wmic.exe
Token: SeBackupPrivilege	2188	wmic.exe
Token: SeRestorePrivilege	2188	wmic.exe
Token: SeShutdownPrivilege	2188	wmic.exe
Token: SeDebugPrivilege	2188	wmic.exe
Token: SeSystemEnvironmentPrivilege	2188	wmic.exe
Token: SeRemoteShutdownPrivilege	2188	wmic.exe
Token: SeUndockPrivilege	2188	wmic.exe
Token: SeManageVolumePrivilege	2188	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3624 wrote to memory of 3188	3624	upx.exe	82
PID 3624 wrote to memory of 3188	3624	upx.exe	82
PID 3624 wrote to memory of 1640	3624	upx.exe	85
PID 3624 wrote to memory of 1640	3624	upx.exe	85
PID 3624 wrote to memory of 3468	3624	upx.exe	87
PID 3624 wrote to memory of 3468	3624	upx.exe	87
PID 3624 wrote to memory of 2036	3624	upx.exe	89
PID 3624 wrote to memory of 2036	3624	upx.exe	89
PID 3624 wrote to memory of 1692	3624	upx.exe	91
PID 3624 wrote to memory of 1692	3624	upx.exe	91
PID 3624 wrote to memory of 2636	3624	upx.exe	93
PID 3624 wrote to memory of 2636	3624	upx.exe	93
PID 3624 wrote to memory of 2188	3624	upx.exe	97
PID 3624 wrote to memory of 2188	3624	upx.exe	97
PID 3624 wrote to memory of 3768	3624	upx.exe	99
PID 3624 wrote to memory of 3768	3624	upx.exe	99
PID 3624 wrote to memory of 3340	3624	upx.exe	101
PID 3624 wrote to memory of 3340	3624	upx.exe	101
PID 3624 wrote to memory of 1992	3624	upx.exe	103
PID 3624 wrote to memory of 1992	3624	upx.exe	103
PID 3624 wrote to memory of 3472	3624	upx.exe	105
PID 3624 wrote to memory of 3472	3624	upx.exe	105
PID 3624 wrote to memory of 4924	3624	upx.exe	108
PID 3624 wrote to memory of 4924	3624	upx.exe	108
PID 4924 wrote to memory of 4184	4924	cmd.exe	110
PID 4924 wrote to memory of 4184	4924	cmd.exe	110

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1640	attrib.exe

C:\Users\Admin\AppData\Local\Temp\upx.exe
"C:\Users\Admin\AppData\Local\Temp\upx.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3624
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3188
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\upx.exe"
  2⤵
  - Views/modifies file attributes
  PID:1640
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\upx.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3468
- 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:2036
- 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:1692
- 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:2636
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2188
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:3768
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3340
- 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:1992
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3472
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\upx.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4924
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4184

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

Replay Monitor

Loading Replay Monitor...

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
1a58f982c18490e622e00d4eb75ace5a

SHA1
60c30527b74659ecf09089a5a7c02a1df9a71b65

SHA256
4b7f800c0dea209162cc86627983993127eb20e3f8616646c41cb3ce15d9b39d

SHA512
ddab516a967783c5951717853aa5b3ef6dd5b442db50092888b2e7f3179fc68120fcde69a08d6ab280740eaadb6eadfc758c3118b52706f869e48ac1aebda480

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
6317adf4fbc43ea2fd68861fafd57155

SHA1
6b87c718893c83c6eed2767e8d9cbc6443e31913

SHA256
c1ead17eef37b4b461cedc276504a441489e819c7f943037f2001966aeec90af

SHA512
17229aae8622e4bfc3caaac55684f7d4ccd3162af5919c851b1d8ac4060b6bb7b75044ecee116523d05acb55197dcb60780958f629450edef386f1e6f65f49f0

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_spk5q4gg.lwo.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3468-10-0x00007FFFB7D90000-0x00007FFFB8851000-memory.dmp

Filesize
10.8MB

Download
memory/3468-6-0x000002AB0C930000-0x000002AB0C952000-memory.dmp

Filesize
136KB

Download
memory/3468-15-0x00007FFFB7D90000-0x00007FFFB8851000-memory.dmp

Filesize
10.8MB

Download
memory/3468-18-0x00007FFFB7D90000-0x00007FFFB8851000-memory.dmp

Filesize
10.8MB

Download
memory/3468-3-0x00007FFFB7D90000-0x00007FFFB8851000-memory.dmp

Filesize
10.8MB

Download
memory/3624-33-0x0000029241630000-0x00000292416A6000-memory.dmp

Filesize
472KB

Download
memory/3624-34-0x0000029241700000-0x0000029241750000-memory.dmp

Filesize
320KB

Download
memory/3624-35-0x00000292413A0000-0x00000292413BE000-memory.dmp

Filesize
120KB

Download
memory/3624-1-0x0000029226EC0000-0x0000029226F00000-memory.dmp

Filesize
256KB

Download
memory/3624-0-0x00007FFFB7D93000-0x00007FFFB7D95000-memory.dmp

Filesize
8KB

Download
memory/3624-72-0x0000029241380000-0x0000029241392000-memory.dmp

Filesize
72KB

Download
memory/3624-71-0x0000029241340000-0x000002924134A000-memory.dmp

Filesize
40KB

Download
memory/3624-2-0x00007FFFB7D90000-0x00007FFFB8851000-memory.dmp

Filesize
10.8MB

Download
memory/3624-90-0x00007FFFB7D90000-0x00007FFFB8851000-memory.dmp

Filesize
10.8MB

Download