umbral | 8ce258cbd6a16100e4426017ba842a2822c0cd0e59ba361cf731d474d45a090d

Analysis

max time kernel
9s
max time network
10s
platform
windows11-21h2_x64
resource
win11-20241023-en
resource tags

arch:x64arch:x86image:win11-20241023-enlocale:en-usos:windows11-21h2-x64system
submitted
05-12-2024 00:11

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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/2112-1-0x000002714ED40000-0x000002714ED92000-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
112	powershell.exe
4108	powershell.exe
3408	powershell.exe
5024	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
7	discord.com
4	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
1	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
3780	cmd.exe
1124	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
260	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1124	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
2112	JJSploit.exe
112	powershell.exe
112	powershell.exe
4108	powershell.exe
4108	powershell.exe
3408	powershell.exe
3408	powershell.exe
2504	powershell.exe
2504	powershell.exe
5024	powershell.exe
5024	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2112	JJSploit.exe
Token: SeIncreaseQuotaPrivilege	1420	wmic.exe
Token: SeSecurityPrivilege	1420	wmic.exe
Token: SeTakeOwnershipPrivilege	1420	wmic.exe
Token: SeLoadDriverPrivilege	1420	wmic.exe
Token: SeSystemProfilePrivilege	1420	wmic.exe
Token: SeSystemtimePrivilege	1420	wmic.exe
Token: SeProfSingleProcessPrivilege	1420	wmic.exe
Token: SeIncBasePriorityPrivilege	1420	wmic.exe
Token: SeCreatePagefilePrivilege	1420	wmic.exe
Token: SeBackupPrivilege	1420	wmic.exe
Token: SeRestorePrivilege	1420	wmic.exe
Token: SeShutdownPrivilege	1420	wmic.exe
Token: SeDebugPrivilege	1420	wmic.exe
Token: SeSystemEnvironmentPrivilege	1420	wmic.exe
Token: SeRemoteShutdownPrivilege	1420	wmic.exe
Token: SeUndockPrivilege	1420	wmic.exe
Token: SeManageVolumePrivilege	1420	wmic.exe
Token: 33	1420	wmic.exe
Token: 34	1420	wmic.exe
Token: 35	1420	wmic.exe
Token: 36	1420	wmic.exe
Token: SeIncreaseQuotaPrivilege	1420	wmic.exe
Token: SeSecurityPrivilege	1420	wmic.exe
Token: SeTakeOwnershipPrivilege	1420	wmic.exe
Token: SeLoadDriverPrivilege	1420	wmic.exe
Token: SeSystemProfilePrivilege	1420	wmic.exe
Token: SeSystemtimePrivilege	1420	wmic.exe
Token: SeProfSingleProcessPrivilege	1420	wmic.exe
Token: SeIncBasePriorityPrivilege	1420	wmic.exe
Token: SeCreatePagefilePrivilege	1420	wmic.exe
Token: SeBackupPrivilege	1420	wmic.exe
Token: SeRestorePrivilege	1420	wmic.exe
Token: SeShutdownPrivilege	1420	wmic.exe
Token: SeDebugPrivilege	1420	wmic.exe
Token: SeSystemEnvironmentPrivilege	1420	wmic.exe
Token: SeRemoteShutdownPrivilege	1420	wmic.exe
Token: SeUndockPrivilege	1420	wmic.exe
Token: SeManageVolumePrivilege	1420	wmic.exe
Token: 33	1420	wmic.exe
Token: 34	1420	wmic.exe
Token: 35	1420	wmic.exe
Token: 36	1420	wmic.exe
Token: SeDebugPrivilege	112	powershell.exe
Token: SeDebugPrivilege	4108	powershell.exe
Token: SeDebugPrivilege	3408	powershell.exe
Token: SeDebugPrivilege	2504	powershell.exe
Token: SeIncreaseQuotaPrivilege	3700	wmic.exe
Token: SeSecurityPrivilege	3700	wmic.exe
Token: SeTakeOwnershipPrivilege	3700	wmic.exe
Token: SeLoadDriverPrivilege	3700	wmic.exe
Token: SeSystemProfilePrivilege	3700	wmic.exe
Token: SeSystemtimePrivilege	3700	wmic.exe
Token: SeProfSingleProcessPrivilege	3700	wmic.exe
Token: SeIncBasePriorityPrivilege	3700	wmic.exe
Token: SeCreatePagefilePrivilege	3700	wmic.exe
Token: SeBackupPrivilege	3700	wmic.exe
Token: SeRestorePrivilege	3700	wmic.exe
Token: SeShutdownPrivilege	3700	wmic.exe
Token: SeDebugPrivilege	3700	wmic.exe
Token: SeSystemEnvironmentPrivilege	3700	wmic.exe
Token: SeRemoteShutdownPrivilege	3700	wmic.exe
Token: SeUndockPrivilege	3700	wmic.exe
Token: SeManageVolumePrivilege	3700	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2112 wrote to memory of 1420	2112	JJSploit.exe	79
PID 2112 wrote to memory of 1420	2112	JJSploit.exe	79
PID 2112 wrote to memory of 1976	2112	JJSploit.exe	83
PID 2112 wrote to memory of 1976	2112	JJSploit.exe	83
PID 2112 wrote to memory of 112	2112	JJSploit.exe	85
PID 2112 wrote to memory of 112	2112	JJSploit.exe	85
PID 2112 wrote to memory of 4108	2112	JJSploit.exe	87
PID 2112 wrote to memory of 4108	2112	JJSploit.exe	87
PID 2112 wrote to memory of 3408	2112	JJSploit.exe	89
PID 2112 wrote to memory of 3408	2112	JJSploit.exe	89
PID 2112 wrote to memory of 2504	2112	JJSploit.exe	91
PID 2112 wrote to memory of 2504	2112	JJSploit.exe	91
PID 2112 wrote to memory of 3700	2112	JJSploit.exe	93
PID 2112 wrote to memory of 3700	2112	JJSploit.exe	93
PID 2112 wrote to memory of 4404	2112	JJSploit.exe	95
PID 2112 wrote to memory of 4404	2112	JJSploit.exe	95
PID 2112 wrote to memory of 1472	2112	JJSploit.exe	97
PID 2112 wrote to memory of 1472	2112	JJSploit.exe	97
PID 2112 wrote to memory of 5024	2112	JJSploit.exe	99
PID 2112 wrote to memory of 5024	2112	JJSploit.exe	99
PID 2112 wrote to memory of 260	2112	JJSploit.exe	101
PID 2112 wrote to memory of 260	2112	JJSploit.exe	101
PID 2112 wrote to memory of 3780	2112	JJSploit.exe	103
PID 2112 wrote to memory of 3780	2112	JJSploit.exe	103
PID 3780 wrote to memory of 1124	3780	cmd.exe	105
PID 3780 wrote to memory of 1124	3780	cmd.exe	105

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1976	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:2112
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1420
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\JJSploit.exe"
  2⤵
  - Views/modifies file attributes
  PID:1976
- 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:112
- 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:4108
- 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:3408
- 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:2504
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3700
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:4404
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1472
- 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:5024
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:260
- 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:3780
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1124

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
6bddc96a32b9ed8fc70b141ccf4a39b2

SHA1
0f33c0699da40a5eadcec646791cf21cdb0dd7c6

SHA256
cb3853abe77eb0da8a1caccb49e97a573b6f35570722eb759116a645d724c132

SHA512
e41f1597b4129b759e4199db195df1c24e47cc47dc9850fab2d48e44bc3d37dc3658fbfbb62332a0b93c552587d7fab09de1634f605faa2209b8470c2a6eaca6

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

Filesize
1KB

MD5
57083a8e45ebe4fd84c7c0f137ec3e21

SHA1
857b5ea57f7bcf03cadee122106c6e58792a9b84

SHA256
f20102c4dc409cad3cdaf7a330c3a18a730a9d7d902b9fbee2a84186cba93d40

SHA512
4bbc21c07c05ee1f783242f0fb59324d5ff9ae18bdf892f02980d582fed83380888eeba58e1a6a321507cfd5d4fe82a328a0d3482b29633be4e3ebbeac636f87

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

Filesize
1KB

MD5
9db2bc0a0bdfa296036c380393d879e6

SHA1
671288bb74f568effac2199c9213cf7e23a31ef9

SHA256
cce5cc392ad9a82edd35129076da6bb2c3ebe85e158efef8ee7740e9e722c678

SHA512
a1331966d5669c465ccbfbb588d8e09d295aba56be1e0bc895966da28916bdfb2e3333e24f48a54c68f3c3af0f78ec70cea1e07ec2e2647e154d7dfc4d412fc7

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nrrylsff.nwb.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/112-4-0x00007FFD53DF0000-0x00007FFD548B2000-memory.dmp

Filesize
10.8MB

Download
memory/112-10-0x00000234FBEA0000-0x00000234FBEC2000-memory.dmp

Filesize
136KB

Download
memory/112-14-0x00007FFD53DF0000-0x00007FFD548B2000-memory.dmp

Filesize
10.8MB

Download
memory/112-17-0x00007FFD53DF0000-0x00007FFD548B2000-memory.dmp

Filesize
10.8MB

Download
memory/112-3-0x00007FFD53DF0000-0x00007FFD548B2000-memory.dmp

Filesize
10.8MB

Download
memory/2112-31-0x0000027169510000-0x0000027169560000-memory.dmp

Filesize
320KB

Download
memory/2112-30-0x0000027169590000-0x0000027169606000-memory.dmp

Filesize
472KB

Download
memory/2112-32-0x0000027169640000-0x000002716965E000-memory.dmp

Filesize
120KB

Download
memory/2112-1-0x000002714ED40000-0x000002714ED92000-memory.dmp

Filesize
328KB

Download
memory/2112-0-0x00007FFD53DF3000-0x00007FFD53DF5000-memory.dmp

Filesize
8KB

Download
memory/2112-67-0x0000027150CF0000-0x0000027150CFA000-memory.dmp

Filesize
40KB

Download
memory/2112-68-0x0000027150D20000-0x0000027150D32000-memory.dmp

Filesize
72KB

Download
memory/2112-2-0x00007FFD53DF0000-0x00007FFD548B2000-memory.dmp

Filesize
10.8MB

Download
memory/2112-87-0x00007FFD53DF0000-0x00007FFD548B2000-memory.dmp

Filesize
10.8MB

Download