umbral | 8ab8fc29e1ebd9b904d65813e7b33520a132dbec055d5c4cf8f101f67381174b

Analysis

max time kernel
141s
max time network
128s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
26-05-2024 08:52

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General

Target

AIMWARЕ.exe
Size

231KB
MD5

6a5855afed7e8dfd5585fb9974325ed4
SHA1

ed1d76c631c6f759bafc3ad95d9a44d2aea1421b
SHA256

8ab8fc29e1ebd9b904d65813e7b33520a132dbec055d5c4cf8f101f67381174b
SHA512

78c96cd5c9121cbcae1963d867182285f0aed92dab17e350c0b268278793370a78cac35de9b0b6014573f9a1d7d19af0a8441037fb43bd90d800775492c91583
SSDEEP

6144:RloZM+rIkd8g+EtXHkv/iD4Nh6KywvrY6hkijD6Hg+lI8e1msAi:joZtL+EP8X6KywvrY6hkijD6d4jZ

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2988-0-0x00000233D3550000-0x00000233D3590000-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
3600	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	AIMWARЕ.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
31	discord.com
32	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
8	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3992	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4604	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
2988	AIMWARЕ.exe
3600	powershell.exe
3600	powershell.exe
4944	powershell.exe
4944	powershell.exe
2284	powershell.exe
2284	powershell.exe
3040	powershell.exe
3040	powershell.exe
4628	powershell.exe
4628	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2988	AIMWARЕ.exe
Token: SeIncreaseQuotaPrivilege	4660	wmic.exe
Token: SeSecurityPrivilege	4660	wmic.exe
Token: SeTakeOwnershipPrivilege	4660	wmic.exe
Token: SeLoadDriverPrivilege	4660	wmic.exe
Token: SeSystemProfilePrivilege	4660	wmic.exe
Token: SeSystemtimePrivilege	4660	wmic.exe
Token: SeProfSingleProcessPrivilege	4660	wmic.exe
Token: SeIncBasePriorityPrivilege	4660	wmic.exe
Token: SeCreatePagefilePrivilege	4660	wmic.exe
Token: SeBackupPrivilege	4660	wmic.exe
Token: SeRestorePrivilege	4660	wmic.exe
Token: SeShutdownPrivilege	4660	wmic.exe
Token: SeDebugPrivilege	4660	wmic.exe
Token: SeSystemEnvironmentPrivilege	4660	wmic.exe
Token: SeRemoteShutdownPrivilege	4660	wmic.exe
Token: SeUndockPrivilege	4660	wmic.exe
Token: SeManageVolumePrivilege	4660	wmic.exe
Token: 33	4660	wmic.exe
Token: 34	4660	wmic.exe
Token: 35	4660	wmic.exe
Token: 36	4660	wmic.exe
Token: SeIncreaseQuotaPrivilege	4660	wmic.exe
Token: SeSecurityPrivilege	4660	wmic.exe
Token: SeTakeOwnershipPrivilege	4660	wmic.exe
Token: SeLoadDriverPrivilege	4660	wmic.exe
Token: SeSystemProfilePrivilege	4660	wmic.exe
Token: SeSystemtimePrivilege	4660	wmic.exe
Token: SeProfSingleProcessPrivilege	4660	wmic.exe
Token: SeIncBasePriorityPrivilege	4660	wmic.exe
Token: SeCreatePagefilePrivilege	4660	wmic.exe
Token: SeBackupPrivilege	4660	wmic.exe
Token: SeRestorePrivilege	4660	wmic.exe
Token: SeShutdownPrivilege	4660	wmic.exe
Token: SeDebugPrivilege	4660	wmic.exe
Token: SeSystemEnvironmentPrivilege	4660	wmic.exe
Token: SeRemoteShutdownPrivilege	4660	wmic.exe
Token: SeUndockPrivilege	4660	wmic.exe
Token: SeManageVolumePrivilege	4660	wmic.exe
Token: 33	4660	wmic.exe
Token: 34	4660	wmic.exe
Token: 35	4660	wmic.exe
Token: 36	4660	wmic.exe
Token: SeDebugPrivilege	3600	powershell.exe
Token: SeDebugPrivilege	4944	powershell.exe
Token: SeDebugPrivilege	2284	powershell.exe
Token: SeDebugPrivilege	3040	powershell.exe
Token: SeIncreaseQuotaPrivilege	2400	wmic.exe
Token: SeSecurityPrivilege	2400	wmic.exe
Token: SeTakeOwnershipPrivilege	2400	wmic.exe
Token: SeLoadDriverPrivilege	2400	wmic.exe
Token: SeSystemProfilePrivilege	2400	wmic.exe
Token: SeSystemtimePrivilege	2400	wmic.exe
Token: SeProfSingleProcessPrivilege	2400	wmic.exe
Token: SeIncBasePriorityPrivilege	2400	wmic.exe
Token: SeCreatePagefilePrivilege	2400	wmic.exe
Token: SeBackupPrivilege	2400	wmic.exe
Token: SeRestorePrivilege	2400	wmic.exe
Token: SeShutdownPrivilege	2400	wmic.exe
Token: SeDebugPrivilege	2400	wmic.exe
Token: SeSystemEnvironmentPrivilege	2400	wmic.exe
Token: SeRemoteShutdownPrivilege	2400	wmic.exe
Token: SeUndockPrivilege	2400	wmic.exe
Token: SeManageVolumePrivilege	2400	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2988 wrote to memory of 4660	2988	AIMWARЕ.exe	84
PID 2988 wrote to memory of 4660	2988	AIMWARЕ.exe	84
PID 2988 wrote to memory of 1544	2988	AIMWARЕ.exe	87
PID 2988 wrote to memory of 1544	2988	AIMWARЕ.exe	87
PID 2988 wrote to memory of 3600	2988	AIMWARЕ.exe	89
PID 2988 wrote to memory of 3600	2988	AIMWARЕ.exe	89
PID 2988 wrote to memory of 4944	2988	AIMWARЕ.exe	93
PID 2988 wrote to memory of 4944	2988	AIMWARЕ.exe	93
PID 2988 wrote to memory of 2284	2988	AIMWARЕ.exe	96
PID 2988 wrote to memory of 2284	2988	AIMWARЕ.exe	96
PID 2988 wrote to memory of 3040	2988	AIMWARЕ.exe	98
PID 2988 wrote to memory of 3040	2988	AIMWARЕ.exe	98
PID 2988 wrote to memory of 2400	2988	AIMWARЕ.exe	102
PID 2988 wrote to memory of 2400	2988	AIMWARЕ.exe	102
PID 2988 wrote to memory of 224	2988	AIMWARЕ.exe	104
PID 2988 wrote to memory of 224	2988	AIMWARЕ.exe	104
PID 2988 wrote to memory of 1496	2988	AIMWARЕ.exe	106
PID 2988 wrote to memory of 1496	2988	AIMWARЕ.exe	106
PID 2988 wrote to memory of 4628	2988	AIMWARЕ.exe	108
PID 2988 wrote to memory of 4628	2988	AIMWARЕ.exe	108
PID 2988 wrote to memory of 3992	2988	AIMWARЕ.exe	110
PID 2988 wrote to memory of 3992	2988	AIMWARЕ.exe	110
PID 2988 wrote to memory of 3800	2988	AIMWARЕ.exe	113
PID 2988 wrote to memory of 3800	2988	AIMWARЕ.exe	113
PID 3800 wrote to memory of 4604	3800	cmd.exe	115
PID 3800 wrote to memory of 4604	3800	cmd.exe	115

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1544	attrib.exe

C:\Users\Admin\AppData\Local\Temp\AIMWARЕ.exe
"C:\Users\Admin\AppData\Local\Temp\AIMWARЕ.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2988
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4660
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\AIMWARЕ.exe"
  2⤵
  - Views/modifies file attributes
  PID:1544
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\AIMWARЕ.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3600
- 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:4944
- 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:2284
- 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:3040
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2400
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:224
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1496
- 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:4628
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3992
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\AIMWARЕ.exe" && pause
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3800
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:4604

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
6d3e9c29fe44e90aae6ed30ccf799ca8

SHA1
c7974ef72264bbdf13a2793ccf1aed11bc565dce

SHA256
2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

SHA512
60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

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

Filesize
948B

MD5
2af06a6b36db9473e4a7d9c7ab72b70b

SHA1
8ef34b9b961e51bdd1b8d7d9db2ec1b0a4764645

SHA256
18a2aa7e245c6732f95fb7749b2b4d29007f2c56a9c5bfbc5e3c127bdfe5f158

SHA512
3495567a5d5af94ae27be51313d9e2630c52017d808042fe0d56baa34fa1d246eb15c253d14c77c77a1d8f2f1c81680e623044ae95415b095696e7fa141ac7cf

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

Filesize
1KB

MD5
e0ec6bf376a6b15852bce768196c5ed0

SHA1
05fe4e592ebbb7e29f36b8d30a6a90ba29bd4f81

SHA256
2d4a39cbbd597a7cfff477817c3c7c541c14974c8d234b4c0de6d229e3a3ce97

SHA512
dc0c7d3d127c88affea9ae402d7358c079cfa7fc3ecb417085e31dc749da1406e72563bfbe42167fdad57e10aa0c6cca7a8ba06921b3a1212ad7ccee1a0f859b

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

Filesize
1KB

MD5
8f3ec0e6ed3151a95adbb64059cc2a1e

SHA1
0740371db069cbbf9f3f5bced885ab01d234761d

SHA256
ea97a261a508f91d9a7983da77425fa99aed0d80a2e47ae42c066e98c0ef3d16

SHA512
27ad5b21385cb9a0d99c9797e0a0aaeecfb34766872d03a97d00673823f211284a9aeb5fe4bb6ebfe3b2e7bb0152c39e3f0466654c2dd0d807f17a67b6a544a9

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vxnmd0bi.ep2.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2988-0-0x00000233D3550000-0x00000233D3590000-memory.dmp

Filesize
256KB

Download
memory/2988-2-0x00007FF86A0E0000-0x00007FF86ABA1000-memory.dmp

Filesize
10.8MB

Download
memory/2988-1-0x00007FF86A0E3000-0x00007FF86A0E5000-memory.dmp

Filesize
8KB

Download
memory/2988-31-0x00000233EDCF0000-0x00000233EDD66000-memory.dmp

Filesize
472KB

Download
memory/2988-32-0x00000233EDB40000-0x00000233EDB90000-memory.dmp

Filesize
320KB

Download
memory/2988-33-0x00000233D51D0000-0x00000233D51EE000-memory.dmp

Filesize
120KB

Download
memory/2988-69-0x00000233D5210000-0x00000233D521A000-memory.dmp

Filesize
40KB

Download
memory/2988-70-0x00000233EDBB0000-0x00000233EDBC2000-memory.dmp

Filesize
72KB

Download
memory/2988-88-0x00007FF86A0E0000-0x00007FF86ABA1000-memory.dmp

Filesize
10.8MB

Download
memory/3600-3-0x00007FF86A0E0000-0x00007FF86ABA1000-memory.dmp

Filesize
10.8MB

Download
memory/3600-16-0x00007FF86A0E0000-0x00007FF86ABA1000-memory.dmp

Filesize
10.8MB

Download
memory/3600-9-0x00000222775A0000-0x00000222775C2000-memory.dmp

Filesize
136KB

Download