umbral | 8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b

Analysis

max time kernel
94s
max time network
98s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
16-11-2024 01:28

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General

Target

8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.exe
Size

227KB
MD5

3a1c193849903781020935a8ad07d07a
SHA1

fef92d8486cebb4d974df2faf04ae37bb0320d6f
SHA256

8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b
SHA512

6f5188d12915c449b7e61842e044573b1b4f2557bbab8f6c71c1e06cccaa04a313af2db0f074a59a8a25919b2b12367635a479a65fd57d3b66d5ff15b4d72246
SSDEEP

6144:+loZM+rIkd8g+EtXHkv/iD4tqjy0ad1+47mEl5Q8hb8e1mcgi9:ooZtL+EP8tqjy0ad1+47mEl5QkL59

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/2896-1-0x000001E448830000-0x000001E448870000-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

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3808	powershell.exe
1892	powershell.exe
4712	powershell.exe
4432	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.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
21	discord.com
20	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
7	ip-api.com

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
224	cmd.exe
2008	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1972	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2008	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
2896	8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.exe
4432	powershell.exe
4432	powershell.exe
4712	powershell.exe
4712	powershell.exe
3808	powershell.exe
3808	powershell.exe
4768	powershell.exe
4768	powershell.exe
1892	powershell.exe
1892	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2896	8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.exe
Token: SeIncreaseQuotaPrivilege	4708	wmic.exe
Token: SeSecurityPrivilege	4708	wmic.exe
Token: SeTakeOwnershipPrivilege	4708	wmic.exe
Token: SeLoadDriverPrivilege	4708	wmic.exe
Token: SeSystemProfilePrivilege	4708	wmic.exe
Token: SeSystemtimePrivilege	4708	wmic.exe
Token: SeProfSingleProcessPrivilege	4708	wmic.exe
Token: SeIncBasePriorityPrivilege	4708	wmic.exe
Token: SeCreatePagefilePrivilege	4708	wmic.exe
Token: SeBackupPrivilege	4708	wmic.exe
Token: SeRestorePrivilege	4708	wmic.exe
Token: SeShutdownPrivilege	4708	wmic.exe
Token: SeDebugPrivilege	4708	wmic.exe
Token: SeSystemEnvironmentPrivilege	4708	wmic.exe
Token: SeRemoteShutdownPrivilege	4708	wmic.exe
Token: SeUndockPrivilege	4708	wmic.exe
Token: SeManageVolumePrivilege	4708	wmic.exe
Token: 33	4708	wmic.exe
Token: 34	4708	wmic.exe
Token: 35	4708	wmic.exe
Token: 36	4708	wmic.exe
Token: SeIncreaseQuotaPrivilege	4708	wmic.exe
Token: SeSecurityPrivilege	4708	wmic.exe
Token: SeTakeOwnershipPrivilege	4708	wmic.exe
Token: SeLoadDriverPrivilege	4708	wmic.exe
Token: SeSystemProfilePrivilege	4708	wmic.exe
Token: SeSystemtimePrivilege	4708	wmic.exe
Token: SeProfSingleProcessPrivilege	4708	wmic.exe
Token: SeIncBasePriorityPrivilege	4708	wmic.exe
Token: SeCreatePagefilePrivilege	4708	wmic.exe
Token: SeBackupPrivilege	4708	wmic.exe
Token: SeRestorePrivilege	4708	wmic.exe
Token: SeShutdownPrivilege	4708	wmic.exe
Token: SeDebugPrivilege	4708	wmic.exe
Token: SeSystemEnvironmentPrivilege	4708	wmic.exe
Token: SeRemoteShutdownPrivilege	4708	wmic.exe
Token: SeUndockPrivilege	4708	wmic.exe
Token: SeManageVolumePrivilege	4708	wmic.exe
Token: 33	4708	wmic.exe
Token: 34	4708	wmic.exe
Token: 35	4708	wmic.exe
Token: 36	4708	wmic.exe
Token: SeDebugPrivilege	4432	powershell.exe
Token: SeDebugPrivilege	4712	powershell.exe
Token: SeDebugPrivilege	3808	powershell.exe
Token: SeDebugPrivilege	4768	powershell.exe
Token: SeIncreaseQuotaPrivilege	428	wmic.exe
Token: SeSecurityPrivilege	428	wmic.exe
Token: SeTakeOwnershipPrivilege	428	wmic.exe
Token: SeLoadDriverPrivilege	428	wmic.exe
Token: SeSystemProfilePrivilege	428	wmic.exe
Token: SeSystemtimePrivilege	428	wmic.exe
Token: SeProfSingleProcessPrivilege	428	wmic.exe
Token: SeIncBasePriorityPrivilege	428	wmic.exe
Token: SeCreatePagefilePrivilege	428	wmic.exe
Token: SeBackupPrivilege	428	wmic.exe
Token: SeRestorePrivilege	428	wmic.exe
Token: SeShutdownPrivilege	428	wmic.exe
Token: SeDebugPrivilege	428	wmic.exe
Token: SeSystemEnvironmentPrivilege	428	wmic.exe
Token: SeRemoteShutdownPrivilege	428	wmic.exe
Token: SeUndockPrivilege	428	wmic.exe
Token: SeManageVolumePrivilege	428	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2896 wrote to memory of 4708	2896	8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.exe	83
PID 2896 wrote to memory of 4708	2896	8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.exe	83
PID 2896 wrote to memory of 2624	2896	8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.exe	88
PID 2896 wrote to memory of 2624	2896	8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.exe	88
PID 2896 wrote to memory of 4432	2896	8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.exe	91
PID 2896 wrote to memory of 4432	2896	8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.exe	91
PID 2896 wrote to memory of 4712	2896	8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.exe	93
PID 2896 wrote to memory of 4712	2896	8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.exe	93
PID 2896 wrote to memory of 3808	2896	8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.exe	95
PID 2896 wrote to memory of 3808	2896	8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.exe	95
PID 2896 wrote to memory of 4768	2896	8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.exe	97
PID 2896 wrote to memory of 4768	2896	8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.exe	97
PID 2896 wrote to memory of 428	2896	8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.exe	101
PID 2896 wrote to memory of 428	2896	8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.exe	101
PID 2896 wrote to memory of 1036	2896	8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.exe	104
PID 2896 wrote to memory of 1036	2896	8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.exe	104
PID 2896 wrote to memory of 4580	2896	8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.exe	106
PID 2896 wrote to memory of 4580	2896	8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.exe	106
PID 2896 wrote to memory of 1892	2896	8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.exe	108
PID 2896 wrote to memory of 1892	2896	8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.exe	108
PID 2896 wrote to memory of 1972	2896	8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.exe	110
PID 2896 wrote to memory of 1972	2896	8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.exe	110
PID 2896 wrote to memory of 224	2896	8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.exe	112
PID 2896 wrote to memory of 224	2896	8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.exe	112
PID 224 wrote to memory of 2008	224	cmd.exe	114
PID 224 wrote to memory of 2008	224	cmd.exe	114

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2624	attrib.exe

C:\Users\Admin\AppData\Local\Temp\8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.exe
"C:\Users\Admin\AppData\Local\Temp\8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2896
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4708
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.exe"
  2⤵
  - Views/modifies file attributes
  PID:2624
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4432
- 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:4712
- 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:3808
- 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:4768
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:428
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1036
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4580
- 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:1892
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1972
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\8fb16a6820997425bafc7635fe37436801301ca8dc445f57db97dd264c5ccf0b.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:224
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2008

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

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Remote System Discovery

T1018

System Information Discovery

T1082

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

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
e243a38635ff9a06c87c2a61a2200656

SHA1
ecd95ed5bf1a9fbe96a8448fc2814a0210fa2afc

SHA256
af5782703f3f2d5a29fb313dae6680a64134db26064d4a321a3f23b75f6ca00f

SHA512
4418957a1b10eee44cf270c81816ae707352411c4f5ac14b6b61ab537c91480e24e0a0a2c276a6291081b4984c123cf673a45dcedb0ceeef682054ba0fc19cb4

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

Filesize
948B

MD5
5824a6037c081fda5d46de274b6e2799

SHA1
526367a09300cbde430e8fb44e41cbe7a0937aac

SHA256
4d610d9cd32a20279c7133a726ff61820d6930e5aa18253ee1422f3a6f54953f

SHA512
a109b150f730cda78d5bee106bd232f9dca7500dfb7899c6919de2bd542e345ca271aa11809a24ea0a27dca158067ab3a2d5688ac0a2325185143245f1665582

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
ec79fae4e7c09310ebf4f2d85a33a638

SHA1
f2bdd995b12e65e7ed437d228f22223b59e76efb

SHA256
e9c4723a5fe34e081c3d2f548a1d472394cc7aa58056fcf44ca542061381243a

SHA512
af9dda12f6bb388d826fe03a4a8beed9bda23a978aa55a2af6a43271660ee896a7ee3bcf2c4d2f1e6180902791d8c23560f1c2ec097a501d8c6f4f6c49075625

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_igx3sqks.ojo.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2896-72-0x000001E44A720000-0x000001E44A72A000-memory.dmp

Filesize
40KB

Download
memory/2896-35-0x000001E44A5C0000-0x000001E44A5DE000-memory.dmp

Filesize
120KB

Download
memory/2896-94-0x00007FFAB1D90000-0x00007FFAB2851000-memory.dmp

Filesize
10.8MB

Download
memory/2896-93-0x000001E44A600000-0x000001E44A702000-memory.dmp

Filesize
1.0MB

Download
memory/2896-2-0x00007FFAB1D90000-0x00007FFAB2851000-memory.dmp

Filesize
10.8MB

Download
memory/2896-33-0x000001E4630E0000-0x000001E463156000-memory.dmp

Filesize
472KB

Download
memory/2896-34-0x000001E4631B0000-0x000001E463200000-memory.dmp

Filesize
320KB

Download
memory/2896-73-0x000001E44A750000-0x000001E44A762000-memory.dmp

Filesize
72KB

Download
memory/2896-1-0x000001E448830000-0x000001E448870000-memory.dmp

Filesize
256KB

Download
memory/2896-0-0x00007FFAB1D93000-0x00007FFAB1D95000-memory.dmp

Filesize
8KB

Download
memory/4432-14-0x00007FFAB1D90000-0x00007FFAB2851000-memory.dmp

Filesize
10.8MB

Download
memory/4432-15-0x00007FFAB1D90000-0x00007FFAB2851000-memory.dmp

Filesize
10.8MB

Download
memory/4432-13-0x00007FFAB1D90000-0x00007FFAB2851000-memory.dmp

Filesize
10.8MB

Download
memory/4432-9-0x00000158B07C0000-0x00000158B07E2000-memory.dmp

Filesize
136KB

Download
memory/4432-18-0x00007FFAB1D90000-0x00007FFAB2851000-memory.dmp

Filesize
10.8MB

Download