umbral | 5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84

Analysis

max time kernel
143s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
07-06-2024 22:13

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General

Target

fix.exe
Size

229KB
MD5

1adeea63d576dea9add98e01e9fe78b4
SHA1

8f754fd661d9ce2e9e9a7278b4dd7096b13fc585
SHA256

5a2904a05d5d2f5d3d3ef44bdf54e74341ae9b54ba5f6545b37acf187eec4f84
SHA512

0ba3c5555273a15c5406f0bd1b5f1a3888814bdbb4130f80eae1f973497c4e5d81a92ed0797a55316b358a42a955fe44f476d1e0e90c15211dc30f4dd20c58cb
SSDEEP

6144:lloZMCrIkd8g+EtXHkv/iD4sodaBPUonIWvRsY99ib8e1miLZi:noZZL+EP8sodaBPUonIWvRsY9wfLA

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/652-1-0x0000024BA9B90000-0x0000024BA9BD0000-memory.dmp	family_umbral

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

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
3108	powershell.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
25	discord.com
26	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
20	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3204	wmic.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
3108	powershell.exe
3108	powershell.exe
220	powershell.exe
220	powershell.exe
1048	powershell.exe
1048	powershell.exe
3516	powershell.exe
3516	powershell.exe
388	powershell.exe
388	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	652	fix.exe
Token: SeDebugPrivilege	3108	powershell.exe
Token: SeDebugPrivilege	220	powershell.exe
Token: SeDebugPrivilege	1048	powershell.exe
Token: SeDebugPrivilege	3516	powershell.exe
Token: SeIncreaseQuotaPrivilege	3376	wmic.exe
Token: SeSecurityPrivilege	3376	wmic.exe
Token: SeTakeOwnershipPrivilege	3376	wmic.exe
Token: SeLoadDriverPrivilege	3376	wmic.exe
Token: SeSystemProfilePrivilege	3376	wmic.exe
Token: SeSystemtimePrivilege	3376	wmic.exe
Token: SeProfSingleProcessPrivilege	3376	wmic.exe
Token: SeIncBasePriorityPrivilege	3376	wmic.exe
Token: SeCreatePagefilePrivilege	3376	wmic.exe
Token: SeBackupPrivilege	3376	wmic.exe
Token: SeRestorePrivilege	3376	wmic.exe
Token: SeShutdownPrivilege	3376	wmic.exe
Token: SeDebugPrivilege	3376	wmic.exe
Token: SeSystemEnvironmentPrivilege	3376	wmic.exe
Token: SeRemoteShutdownPrivilege	3376	wmic.exe
Token: SeUndockPrivilege	3376	wmic.exe
Token: SeManageVolumePrivilege	3376	wmic.exe
Token: 33	3376	wmic.exe
Token: 34	3376	wmic.exe
Token: 35	3376	wmic.exe
Token: 36	3376	wmic.exe
Token: SeIncreaseQuotaPrivilege	3376	wmic.exe
Token: SeSecurityPrivilege	3376	wmic.exe
Token: SeTakeOwnershipPrivilege	3376	wmic.exe
Token: SeLoadDriverPrivilege	3376	wmic.exe
Token: SeSystemProfilePrivilege	3376	wmic.exe
Token: SeSystemtimePrivilege	3376	wmic.exe
Token: SeProfSingleProcessPrivilege	3376	wmic.exe
Token: SeIncBasePriorityPrivilege	3376	wmic.exe
Token: SeCreatePagefilePrivilege	3376	wmic.exe
Token: SeBackupPrivilege	3376	wmic.exe
Token: SeRestorePrivilege	3376	wmic.exe
Token: SeShutdownPrivilege	3376	wmic.exe
Token: SeDebugPrivilege	3376	wmic.exe
Token: SeSystemEnvironmentPrivilege	3376	wmic.exe
Token: SeRemoteShutdownPrivilege	3376	wmic.exe
Token: SeUndockPrivilege	3376	wmic.exe
Token: SeManageVolumePrivilege	3376	wmic.exe
Token: 33	3376	wmic.exe
Token: 34	3376	wmic.exe
Token: 35	3376	wmic.exe
Token: 36	3376	wmic.exe
Token: SeIncreaseQuotaPrivilege	2328	wmic.exe
Token: SeSecurityPrivilege	2328	wmic.exe
Token: SeTakeOwnershipPrivilege	2328	wmic.exe
Token: SeLoadDriverPrivilege	2328	wmic.exe
Token: SeSystemProfilePrivilege	2328	wmic.exe
Token: SeSystemtimePrivilege	2328	wmic.exe
Token: SeProfSingleProcessPrivilege	2328	wmic.exe
Token: SeIncBasePriorityPrivilege	2328	wmic.exe
Token: SeCreatePagefilePrivilege	2328	wmic.exe
Token: SeBackupPrivilege	2328	wmic.exe
Token: SeRestorePrivilege	2328	wmic.exe
Token: SeShutdownPrivilege	2328	wmic.exe
Token: SeDebugPrivilege	2328	wmic.exe
Token: SeSystemEnvironmentPrivilege	2328	wmic.exe
Token: SeRemoteShutdownPrivilege	2328	wmic.exe
Token: SeUndockPrivilege	2328	wmic.exe
Token: SeManageVolumePrivilege	2328	wmic.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 652 wrote to memory of 3108	652	fix.exe	90
PID 652 wrote to memory of 3108	652	fix.exe	90
PID 652 wrote to memory of 220	652	fix.exe	92
PID 652 wrote to memory of 220	652	fix.exe	92
PID 652 wrote to memory of 1048	652	fix.exe	94
PID 652 wrote to memory of 1048	652	fix.exe	94
PID 652 wrote to memory of 3516	652	fix.exe	96
PID 652 wrote to memory of 3516	652	fix.exe	96
PID 652 wrote to memory of 3376	652	fix.exe	98
PID 652 wrote to memory of 3376	652	fix.exe	98
PID 652 wrote to memory of 2328	652	fix.exe	101
PID 652 wrote to memory of 2328	652	fix.exe	101
PID 652 wrote to memory of 972	652	fix.exe	103
PID 652 wrote to memory of 972	652	fix.exe	103
PID 652 wrote to memory of 388	652	fix.exe	105
PID 652 wrote to memory of 388	652	fix.exe	105
PID 652 wrote to memory of 3204	652	fix.exe	107
PID 652 wrote to memory of 3204	652	fix.exe	107

C:\Users\Admin\AppData\Local\Temp\fix.exe
"C:\Users\Admin\AppData\Local\Temp\fix.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:652
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\fix.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3108
- 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⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:220
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1048
- 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:3516
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3376
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2328
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:972
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:388
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3204

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1036 --field-trial-handle=1928,i,13242902252791919845,10377620236057253993,262144 --variations-seed-version /prefetch:8
1⤵
PID:3104

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

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
d28a889fd956d5cb3accfbaf1143eb6f

SHA1
157ba54b365341f8ff06707d996b3635da8446f7

SHA256
21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

SHA512
0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

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

Filesize
948B

MD5
ecac37a294a8f17b9c89abc6354cb1fe

SHA1
b918fd8ca0ec11fc4a39633a8dc94abe60140eb9

SHA256
51037b293178bc395824bb6fd9b80ba7c23399c4e4a74f0bc067a557a1da9fb8

SHA512
7b5e3032a2848f46cbf330b06693304945e4257cc2a7220f28adaa7b71aad7f63872379aebe6f1cfb68b78a9605d3ed5c1ddc6549f720e9bb7ac95b1c2a0ed64

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

Filesize
1KB

MD5
57c9afc76e218af6740cddec86b8d154

SHA1
5284732e69315f90b9e9515180f1612a19dedaa5

SHA256
0be96f24ba9a643ea5e09901c8c9398d63c475f2c41e126563f1ca980338a48c

SHA512
7fc967fc456f93e5ad1752171256284afb53768ec2e5ec1c02c35175b7bf0586a0e9e0318a9779970abac3c0d55e2946840d3597c2f28db0ad22d123b8b1f0fe

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

Filesize
1KB

MD5
d9d2e5db9e09be20ad0a44e76e96e104

SHA1
76d8f8e9cccf05ad348e6b31ecd05a4d55f9c04a

SHA256
443e637928501418b10db993aa9a59b0d5eee42a1e37f1888e8c05bd42206a6e

SHA512
2c87b1d2d208b25c3e5ffe38d8ff3a6b86c1eddac7e9d4a036826884f08d72b0855df11e2c8b9144054e07e5f1e431936413fd9de276aac2862613c2dd6c6fcc

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3rrdby4a.ngt.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/652-0-0x00007FF9EA913000-0x00007FF9EA915000-memory.dmp

Filesize
8KB

Download
memory/652-35-0x0000024BC4390000-0x0000024BC43AE000-memory.dmp

Filesize
120KB

Download
memory/652-69-0x0000024BC44B0000-0x0000024BC44C2000-memory.dmp

Filesize
72KB

Download
memory/652-68-0x0000024BC4260000-0x0000024BC426A000-memory.dmp

Filesize
40KB

Download
memory/652-87-0x00007FF9EA910000-0x00007FF9EB3D1000-memory.dmp

Filesize
10.8MB

Download
memory/652-2-0x00007FF9EA910000-0x00007FF9EB3D1000-memory.dmp

Filesize
10.8MB

Download
memory/652-1-0x0000024BA9B90000-0x0000024BA9BD0000-memory.dmp

Filesize
256KB

Download
memory/652-33-0x0000024BC4310000-0x0000024BC4386000-memory.dmp

Filesize
472KB

Download
memory/652-34-0x0000024BC4290000-0x0000024BC42E0000-memory.dmp

Filesize
320KB

Download
memory/3108-13-0x00007FF9EA910000-0x00007FF9EB3D1000-memory.dmp

Filesize
10.8MB

Download
memory/3108-20-0x00007FF9EA910000-0x00007FF9EB3D1000-memory.dmp

Filesize
10.8MB

Download
memory/3108-17-0x00007FF9EA910000-0x00007FF9EB3D1000-memory.dmp

Filesize
10.8MB

Download
memory/3108-16-0x00007FF9EA910000-0x00007FF9EB3D1000-memory.dmp

Filesize
10.8MB

Download
memory/3108-15-0x00007FF9EA910000-0x00007FF9EB3D1000-memory.dmp

Filesize
10.8MB

Download
memory/3108-14-0x00007FF9EA910000-0x00007FF9EB3D1000-memory.dmp

Filesize
10.8MB

Download
memory/3108-9-0x00000212DA830000-0x00000212DA852000-memory.dmp

Filesize
136KB

Download