umbral | 733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef

Analysis

max time kernel
93s
max time network
94s
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 12:11

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General

Target

733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe
Size

231KB
MD5

0adae0c64017d858ba11f98f8276a970
SHA1

4363eac789ffcf9d966981069e2709a249509181
SHA256

733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef
SHA512

e31f1d41ad682b6e566e628ec02fbcc690f79026442e6171f3ae745058d80c72cdc36b6822f84d9c950d8aa24bdc4820257b30a43bb7138888df65bc423cdea8
SSDEEP

6144:xloZMffsXtioRkts/cnnK6cMltMMjw2xpaBPyAxVkElb8e1mhzLHiy:DoZdtlRk83MltMMjw2xpaBPyAxVkAMWy

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/1700-1-0x0000026ED2320000-0x0000026ED2360000-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
1464	powershell.exe
4524	powershell.exe
3472	powershell.exe
2612	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.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

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
8	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2060	wmic.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
1700	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe
1464	powershell.exe
1464	powershell.exe
4524	powershell.exe
4524	powershell.exe
3472	powershell.exe
3472	powershell.exe
704	powershell.exe
704	powershell.exe
2612	powershell.exe
2612	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1700	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe
Token: SeIncreaseQuotaPrivilege	2256	wmic.exe
Token: SeSecurityPrivilege	2256	wmic.exe
Token: SeTakeOwnershipPrivilege	2256	wmic.exe
Token: SeLoadDriverPrivilege	2256	wmic.exe
Token: SeSystemProfilePrivilege	2256	wmic.exe
Token: SeSystemtimePrivilege	2256	wmic.exe
Token: SeProfSingleProcessPrivilege	2256	wmic.exe
Token: SeIncBasePriorityPrivilege	2256	wmic.exe
Token: SeCreatePagefilePrivilege	2256	wmic.exe
Token: SeBackupPrivilege	2256	wmic.exe
Token: SeRestorePrivilege	2256	wmic.exe
Token: SeShutdownPrivilege	2256	wmic.exe
Token: SeDebugPrivilege	2256	wmic.exe
Token: SeSystemEnvironmentPrivilege	2256	wmic.exe
Token: SeRemoteShutdownPrivilege	2256	wmic.exe
Token: SeUndockPrivilege	2256	wmic.exe
Token: SeManageVolumePrivilege	2256	wmic.exe
Token: 33	2256	wmic.exe
Token: 34	2256	wmic.exe
Token: 35	2256	wmic.exe
Token: 36	2256	wmic.exe
Token: SeIncreaseQuotaPrivilege	2256	wmic.exe
Token: SeSecurityPrivilege	2256	wmic.exe
Token: SeTakeOwnershipPrivilege	2256	wmic.exe
Token: SeLoadDriverPrivilege	2256	wmic.exe
Token: SeSystemProfilePrivilege	2256	wmic.exe
Token: SeSystemtimePrivilege	2256	wmic.exe
Token: SeProfSingleProcessPrivilege	2256	wmic.exe
Token: SeIncBasePriorityPrivilege	2256	wmic.exe
Token: SeCreatePagefilePrivilege	2256	wmic.exe
Token: SeBackupPrivilege	2256	wmic.exe
Token: SeRestorePrivilege	2256	wmic.exe
Token: SeShutdownPrivilege	2256	wmic.exe
Token: SeDebugPrivilege	2256	wmic.exe
Token: SeSystemEnvironmentPrivilege	2256	wmic.exe
Token: SeRemoteShutdownPrivilege	2256	wmic.exe
Token: SeUndockPrivilege	2256	wmic.exe
Token: SeManageVolumePrivilege	2256	wmic.exe
Token: 33	2256	wmic.exe
Token: 34	2256	wmic.exe
Token: 35	2256	wmic.exe
Token: 36	2256	wmic.exe
Token: SeDebugPrivilege	1464	powershell.exe
Token: SeDebugPrivilege	4524	powershell.exe
Token: SeDebugPrivilege	3472	powershell.exe
Token: SeDebugPrivilege	704	powershell.exe
Token: SeIncreaseQuotaPrivilege	3728	wmic.exe
Token: SeSecurityPrivilege	3728	wmic.exe
Token: SeTakeOwnershipPrivilege	3728	wmic.exe
Token: SeLoadDriverPrivilege	3728	wmic.exe
Token: SeSystemProfilePrivilege	3728	wmic.exe
Token: SeSystemtimePrivilege	3728	wmic.exe
Token: SeProfSingleProcessPrivilege	3728	wmic.exe
Token: SeIncBasePriorityPrivilege	3728	wmic.exe
Token: SeCreatePagefilePrivilege	3728	wmic.exe
Token: SeBackupPrivilege	3728	wmic.exe
Token: SeRestorePrivilege	3728	wmic.exe
Token: SeShutdownPrivilege	3728	wmic.exe
Token: SeDebugPrivilege	3728	wmic.exe
Token: SeSystemEnvironmentPrivilege	3728	wmic.exe
Token: SeRemoteShutdownPrivilege	3728	wmic.exe
Token: SeUndockPrivilege	3728	wmic.exe
Token: SeManageVolumePrivilege	3728	wmic.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1700 wrote to memory of 2256	1700	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	83
PID 1700 wrote to memory of 2256	1700	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	83
PID 1700 wrote to memory of 1464	1700	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	86
PID 1700 wrote to memory of 1464	1700	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	86
PID 1700 wrote to memory of 4524	1700	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	88
PID 1700 wrote to memory of 4524	1700	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	88
PID 1700 wrote to memory of 3472	1700	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	90
PID 1700 wrote to memory of 3472	1700	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	90
PID 1700 wrote to memory of 704	1700	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	92
PID 1700 wrote to memory of 704	1700	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	92
PID 1700 wrote to memory of 3728	1700	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	95
PID 1700 wrote to memory of 3728	1700	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	95
PID 1700 wrote to memory of 4008	1700	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	97
PID 1700 wrote to memory of 4008	1700	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	97
PID 1700 wrote to memory of 3036	1700	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	99
PID 1700 wrote to memory of 3036	1700	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	99
PID 1700 wrote to memory of 2612	1700	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	101
PID 1700 wrote to memory of 2612	1700	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	101
PID 1700 wrote to memory of 2060	1700	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	103
PID 1700 wrote to memory of 2060	1700	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe	103

C:\Users\Admin\AppData\Local\Temp\733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe
"C:\Users\Admin\AppData\Local\Temp\733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1700
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2256
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7efN.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1464
- 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:4524
- 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:3472
- 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:704
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3728
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:4008
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3036
- 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:2612
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2060

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

Exfiltration

Impact

Replay Monitor

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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
c65738617888921a153bd9b1ef516ee7

SHA1
5245e71ea3c181d76320c857b639272ac9e079b1

SHA256
4640ba4001fd16a593315299cbdd4988dc2c7075820687f1018aac40aca95c26

SHA512
2e2a0ebd93f9d8dd07a7599054bce232683e9add9a35e77b584618040bcfd84a42545352519ec4736cc379002210b6f3ed2d905591c6925c0981b0392b495bfa

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
432b029f0d47aac8429e5493f0771098

SHA1
7413e5de86c7b0a8ea82e22f3a9c0016f48809a4

SHA256
6e8ed507584a886ce69748227d7b628673b719f079e470a0cf7d1941eebab9fe

SHA512
c66c2765d252742c575b1f94633cc26effc38399248fcb1a7a065a7bfff763326fc0be7a6134dffc3abfaf33bb75808bcbcd4ed4e959db83d515adc23b266c96

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_abvrat0y.y32.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1464-4-0x00007FF97C100000-0x00007FF97CBC1000-memory.dmp

Filesize
10.8MB

Download
memory/1464-14-0x00000272300E0000-0x0000027230102000-memory.dmp

Filesize
136KB

Download
memory/1464-15-0x00007FF97C100000-0x00007FF97CBC1000-memory.dmp

Filesize
10.8MB

Download
memory/1464-18-0x00007FF97C100000-0x00007FF97CBC1000-memory.dmp

Filesize
10.8MB

Download
memory/1464-3-0x00007FF97C100000-0x00007FF97CBC1000-memory.dmp

Filesize
10.8MB

Download
memory/1700-33-0x0000026ED3FC0000-0x0000026ED4010000-memory.dmp

Filesize
320KB

Download
memory/1700-32-0x0000026ED4040000-0x0000026ED40B6000-memory.dmp

Filesize
472KB

Download
memory/1700-34-0x0000026ED3FA0000-0x0000026ED3FBE000-memory.dmp

Filesize
120KB

Download
memory/1700-1-0x0000026ED2320000-0x0000026ED2360000-memory.dmp

Filesize
256KB

Download
memory/1700-0-0x00007FF97C103000-0x00007FF97C105000-memory.dmp

Filesize
8KB

Download
memory/1700-71-0x0000026ED4020000-0x0000026ED402A000-memory.dmp

Filesize
40KB

Download
memory/1700-72-0x0000026EECA50000-0x0000026EECA62000-memory.dmp

Filesize
72KB

Download
memory/1700-2-0x00007FF97C100000-0x00007FF97CBC1000-memory.dmp

Filesize
10.8MB

Download
memory/1700-92-0x0000026EECC80000-0x0000026EECE29000-memory.dmp

Filesize
1.7MB

Download
memory/1700-93-0x00007FF97C100000-0x00007FF97CBC1000-memory.dmp

Filesize
10.8MB

Download