umbral | 7561ef67b210e8d30d71700ca0288c5d391adc968988db16eeac209b7cb5941e

Analysis

max time kernel
125s
max time network
127s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
15-06-2024 07:04

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General

Target

executor.exe
Size

230KB
MD5

6d36622e437d5f0bbeb1e43ee49ffe35
SHA1

98751d0a048e319fec614ae26c1c78c86a048300
SHA256

7561ef67b210e8d30d71700ca0288c5d391adc968988db16eeac209b7cb5941e
SHA512

10f21503c75bded2ce97b260792581d7abf7f633d29cff93251957dad2fd184911160e1dbac19d7325703d0163a2b34e728be07de273dcbbbe87f41da6a1f13e
SSDEEP

6144:lloZM+rIkd8g+EtXHkv/iD40naJUBPUonXWvRsY9Mcb8e1mh5ui:noZtL+EP80naJUBPUonXWvRsY95OD

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/1000-0-0x00000262ACF50000-0x00000262ACF90000-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
2800	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	executor.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
25	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
3	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3984	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
936	PING.EXE

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
1000	executor.exe
2800	powershell.exe
2800	powershell.exe
2288	powershell.exe
2288	powershell.exe
3592	powershell.exe
3592	powershell.exe
3592	powershell.exe
4944	powershell.exe
4944	powershell.exe
4944	powershell.exe
4556	powershell.exe
4556	powershell.exe
4556	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1000	executor.exe
Token: SeIncreaseQuotaPrivilege	916	wmic.exe
Token: SeSecurityPrivilege	916	wmic.exe
Token: SeTakeOwnershipPrivilege	916	wmic.exe
Token: SeLoadDriverPrivilege	916	wmic.exe
Token: SeSystemProfilePrivilege	916	wmic.exe
Token: SeSystemtimePrivilege	916	wmic.exe
Token: SeProfSingleProcessPrivilege	916	wmic.exe
Token: SeIncBasePriorityPrivilege	916	wmic.exe
Token: SeCreatePagefilePrivilege	916	wmic.exe
Token: SeBackupPrivilege	916	wmic.exe
Token: SeRestorePrivilege	916	wmic.exe
Token: SeShutdownPrivilege	916	wmic.exe
Token: SeDebugPrivilege	916	wmic.exe
Token: SeSystemEnvironmentPrivilege	916	wmic.exe
Token: SeRemoteShutdownPrivilege	916	wmic.exe
Token: SeUndockPrivilege	916	wmic.exe
Token: SeManageVolumePrivilege	916	wmic.exe
Token: 33	916	wmic.exe
Token: 34	916	wmic.exe
Token: 35	916	wmic.exe
Token: 36	916	wmic.exe
Token: SeIncreaseQuotaPrivilege	916	wmic.exe
Token: SeSecurityPrivilege	916	wmic.exe
Token: SeTakeOwnershipPrivilege	916	wmic.exe
Token: SeLoadDriverPrivilege	916	wmic.exe
Token: SeSystemProfilePrivilege	916	wmic.exe
Token: SeSystemtimePrivilege	916	wmic.exe
Token: SeProfSingleProcessPrivilege	916	wmic.exe
Token: SeIncBasePriorityPrivilege	916	wmic.exe
Token: SeCreatePagefilePrivilege	916	wmic.exe
Token: SeBackupPrivilege	916	wmic.exe
Token: SeRestorePrivilege	916	wmic.exe
Token: SeShutdownPrivilege	916	wmic.exe
Token: SeDebugPrivilege	916	wmic.exe
Token: SeSystemEnvironmentPrivilege	916	wmic.exe
Token: SeRemoteShutdownPrivilege	916	wmic.exe
Token: SeUndockPrivilege	916	wmic.exe
Token: SeManageVolumePrivilege	916	wmic.exe
Token: 33	916	wmic.exe
Token: 34	916	wmic.exe
Token: 35	916	wmic.exe
Token: 36	916	wmic.exe
Token: SeDebugPrivilege	2800	powershell.exe
Token: SeDebugPrivilege	2288	powershell.exe
Token: SeDebugPrivilege	3592	powershell.exe
Token: SeDebugPrivilege	4944	powershell.exe
Token: SeIncreaseQuotaPrivilege	4280	wmic.exe
Token: SeSecurityPrivilege	4280	wmic.exe
Token: SeTakeOwnershipPrivilege	4280	wmic.exe
Token: SeLoadDriverPrivilege	4280	wmic.exe
Token: SeSystemProfilePrivilege	4280	wmic.exe
Token: SeSystemtimePrivilege	4280	wmic.exe
Token: SeProfSingleProcessPrivilege	4280	wmic.exe
Token: SeIncBasePriorityPrivilege	4280	wmic.exe
Token: SeCreatePagefilePrivilege	4280	wmic.exe
Token: SeBackupPrivilege	4280	wmic.exe
Token: SeRestorePrivilege	4280	wmic.exe
Token: SeShutdownPrivilege	4280	wmic.exe
Token: SeDebugPrivilege	4280	wmic.exe
Token: SeSystemEnvironmentPrivilege	4280	wmic.exe
Token: SeRemoteShutdownPrivilege	4280	wmic.exe
Token: SeUndockPrivilege	4280	wmic.exe
Token: SeManageVolumePrivilege	4280	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1000 wrote to memory of 916	1000	executor.exe	89
PID 1000 wrote to memory of 916	1000	executor.exe	89
PID 1000 wrote to memory of 1076	1000	executor.exe	95
PID 1000 wrote to memory of 1076	1000	executor.exe	95
PID 1000 wrote to memory of 2800	1000	executor.exe	97
PID 1000 wrote to memory of 2800	1000	executor.exe	97
PID 1000 wrote to memory of 2288	1000	executor.exe	99
PID 1000 wrote to memory of 2288	1000	executor.exe	99
PID 1000 wrote to memory of 3592	1000	executor.exe	101
PID 1000 wrote to memory of 3592	1000	executor.exe	101
PID 1000 wrote to memory of 4944	1000	executor.exe	103
PID 1000 wrote to memory of 4944	1000	executor.exe	103
PID 1000 wrote to memory of 4280	1000	executor.exe	105
PID 1000 wrote to memory of 4280	1000	executor.exe	105
PID 1000 wrote to memory of 2116	1000	executor.exe	107
PID 1000 wrote to memory of 2116	1000	executor.exe	107
PID 1000 wrote to memory of 4344	1000	executor.exe	109
PID 1000 wrote to memory of 4344	1000	executor.exe	109
PID 1000 wrote to memory of 4556	1000	executor.exe	111
PID 1000 wrote to memory of 4556	1000	executor.exe	111
PID 1000 wrote to memory of 3984	1000	executor.exe	113
PID 1000 wrote to memory of 3984	1000	executor.exe	113
PID 1000 wrote to memory of 4488	1000	executor.exe	116
PID 1000 wrote to memory of 4488	1000	executor.exe	116
PID 4488 wrote to memory of 936	4488	cmd.exe	118
PID 4488 wrote to memory of 936	4488	cmd.exe	118

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1076	attrib.exe

C:\Users\Admin\AppData\Local\Temp\executor.exe
"C:\Users\Admin\AppData\Local\Temp\executor.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1000
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:916
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\executor.exe"
  2⤵
  - Views/modifies file attributes
  PID:1076
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\executor.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2800
- 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:2288
- 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:3592
- 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:4944
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4280
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2116
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4344
- 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:4556
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3984
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\executor.exe" && pause
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4488
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:936

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 --field-trial-handle=4256,i,2113996974559895641,18156918660790954073,262144 --variations-seed-version --mojo-platform-channel-handle=4208 /prefetch:8
1⤵
PID:5088

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

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Remote System Discovery

T1018

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
ba42012e626d8c04b25c5e8bcb49d58e

SHA1
4f542888067e87d2d4dd8ced7bc901abd60f819b

SHA256
0a3c73d3b3afc81747d415241a047a1cadd117a0536606b89e57ecf8836e40ff

SHA512
6678e24f430379c3c2ec0385fc02d0db9a65720072b57e4b36f23be65c82b4d3da2692e1bf0d575bdd59d5673fa1b64ab99d1881367af632bb89121b1981fe11

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
7511c81925750deb7ad1b9b80eea8a8d

SHA1
6ea759b3cbd243ae11435c6d6c5ced185eb01f49

SHA256
5b49723a7773f2fe1f6093236e7b9b2c546f0873635d02346cb39535811234fa

SHA512
5f7e69316d39525d137a7a833f8c746ceef8f1b2295348393fb3244cca8b962fbaad0f7da49da453fe97e2c49b1f41f06138111ac5ff97fdc33c300350ec3a1b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_au2lrsnj.4gh.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1000-69-0x00000262C7670000-0x00000262C767A000-memory.dmp

Filesize
40KB

Download
memory/1000-35-0x00000262C77F0000-0x00000262C780E000-memory.dmp

Filesize
120KB

Download
memory/1000-90-0x00007FF874190000-0x00007FF874C51000-memory.dmp

Filesize
10.8MB

Download
memory/1000-70-0x00000262C7780000-0x00000262C7792000-memory.dmp

Filesize
72KB

Download
memory/1000-2-0x00007FF874190000-0x00007FF874C51000-memory.dmp

Filesize
10.8MB

Download
memory/1000-33-0x00000262C7690000-0x00000262C7706000-memory.dmp

Filesize
472KB

Download
memory/1000-34-0x00000262C7710000-0x00000262C7760000-memory.dmp

Filesize
320KB

Download
memory/1000-1-0x00007FF874193000-0x00007FF874195000-memory.dmp

Filesize
8KB

Download
memory/1000-0-0x00000262ACF50000-0x00000262ACF90000-memory.dmp

Filesize
256KB

Download
memory/2800-15-0x00007FF874190000-0x00007FF874C51000-memory.dmp

Filesize
10.8MB

Download
memory/2800-13-0x00007FF874190000-0x00007FF874C51000-memory.dmp

Filesize
10.8MB

Download
memory/2800-14-0x00007FF874190000-0x00007FF874C51000-memory.dmp

Filesize
10.8MB

Download
memory/2800-12-0x00000165E9300000-0x00000165E9322000-memory.dmp

Filesize
136KB

Download
memory/2800-18-0x00007FF874190000-0x00007FF874C51000-memory.dmp

Filesize
10.8MB

Download