umbral | b4b6f0ce548f5ec6207bf0f8350011f953ef5d4011ff288ef5e2e0376cc18ded

Resubmissions

13/11/2024, 20:39

241113-zfjhksygpp 10

Analysis

max time kernel
91s
max time network
101s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
13/11/2024, 20:39

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General

Target

Perm Spoofer/dumped files/fixserials.exe
Size

229KB
MD5

9252505656ab18c34d4ecff6a7f86263
SHA1

dfa01cbe5c99fbf67a5063f99c67669382e43356
SHA256

78da8433390c0aaf2e5f748ff266bacad23fe9d05b1834eabceeb6ad69859589
SHA512

5e270de9982c3137c16e32fa4c88f9a414893c623fbcdd5cb2f3ff9bbf82eac82bb8d01100d60ea8633da875b36df39d657a9090e393d4fdf717575821bce8a5
SSDEEP

6144:lloZMcrIkd8g+EtXHkv/iD4l6qZEKtFu9r20VJgU8b8e1mbDi:noZrL+EP8l6qZEKtFu9r20VJgZd

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral14/memory/440-1-0x0000021747890000-0x00000217478D0000-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
732	powershell.exe
2232	powershell.exe
972	powershell.exe
2564	powershell.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
1	discord.com
7	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
1856	cmd.exe
3152	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1620	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3152	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
440	fixserials.exe
2564	powershell.exe
2564	powershell.exe
732	powershell.exe
732	powershell.exe
2232	powershell.exe
2232	powershell.exe
996	powershell.exe
996	powershell.exe
972	powershell.exe
972	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	440	fixserials.exe
Token: SeIncreaseQuotaPrivilege	4508	wmic.exe
Token: SeSecurityPrivilege	4508	wmic.exe
Token: SeTakeOwnershipPrivilege	4508	wmic.exe
Token: SeLoadDriverPrivilege	4508	wmic.exe
Token: SeSystemProfilePrivilege	4508	wmic.exe
Token: SeSystemtimePrivilege	4508	wmic.exe
Token: SeProfSingleProcessPrivilege	4508	wmic.exe
Token: SeIncBasePriorityPrivilege	4508	wmic.exe
Token: SeCreatePagefilePrivilege	4508	wmic.exe
Token: SeBackupPrivilege	4508	wmic.exe
Token: SeRestorePrivilege	4508	wmic.exe
Token: SeShutdownPrivilege	4508	wmic.exe
Token: SeDebugPrivilege	4508	wmic.exe
Token: SeSystemEnvironmentPrivilege	4508	wmic.exe
Token: SeRemoteShutdownPrivilege	4508	wmic.exe
Token: SeUndockPrivilege	4508	wmic.exe
Token: SeManageVolumePrivilege	4508	wmic.exe
Token: 33	4508	wmic.exe
Token: 34	4508	wmic.exe
Token: 35	4508	wmic.exe
Token: 36	4508	wmic.exe
Token: SeIncreaseQuotaPrivilege	4508	wmic.exe
Token: SeSecurityPrivilege	4508	wmic.exe
Token: SeTakeOwnershipPrivilege	4508	wmic.exe
Token: SeLoadDriverPrivilege	4508	wmic.exe
Token: SeSystemProfilePrivilege	4508	wmic.exe
Token: SeSystemtimePrivilege	4508	wmic.exe
Token: SeProfSingleProcessPrivilege	4508	wmic.exe
Token: SeIncBasePriorityPrivilege	4508	wmic.exe
Token: SeCreatePagefilePrivilege	4508	wmic.exe
Token: SeBackupPrivilege	4508	wmic.exe
Token: SeRestorePrivilege	4508	wmic.exe
Token: SeShutdownPrivilege	4508	wmic.exe
Token: SeDebugPrivilege	4508	wmic.exe
Token: SeSystemEnvironmentPrivilege	4508	wmic.exe
Token: SeRemoteShutdownPrivilege	4508	wmic.exe
Token: SeUndockPrivilege	4508	wmic.exe
Token: SeManageVolumePrivilege	4508	wmic.exe
Token: 33	4508	wmic.exe
Token: 34	4508	wmic.exe
Token: 35	4508	wmic.exe
Token: 36	4508	wmic.exe
Token: SeDebugPrivilege	2564	powershell.exe
Token: SeDebugPrivilege	732	powershell.exe
Token: SeDebugPrivilege	2232	powershell.exe
Token: SeDebugPrivilege	996	powershell.exe
Token: SeIncreaseQuotaPrivilege	1552	wmic.exe
Token: SeSecurityPrivilege	1552	wmic.exe
Token: SeTakeOwnershipPrivilege	1552	wmic.exe
Token: SeLoadDriverPrivilege	1552	wmic.exe
Token: SeSystemProfilePrivilege	1552	wmic.exe
Token: SeSystemtimePrivilege	1552	wmic.exe
Token: SeProfSingleProcessPrivilege	1552	wmic.exe
Token: SeIncBasePriorityPrivilege	1552	wmic.exe
Token: SeCreatePagefilePrivilege	1552	wmic.exe
Token: SeBackupPrivilege	1552	wmic.exe
Token: SeRestorePrivilege	1552	wmic.exe
Token: SeShutdownPrivilege	1552	wmic.exe
Token: SeDebugPrivilege	1552	wmic.exe
Token: SeSystemEnvironmentPrivilege	1552	wmic.exe
Token: SeRemoteShutdownPrivilege	1552	wmic.exe
Token: SeUndockPrivilege	1552	wmic.exe
Token: SeManageVolumePrivilege	1552	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 440 wrote to memory of 4508	440	fixserials.exe	80
PID 440 wrote to memory of 4508	440	fixserials.exe	80
PID 440 wrote to memory of 3004	440	fixserials.exe	83
PID 440 wrote to memory of 3004	440	fixserials.exe	83
PID 440 wrote to memory of 2564	440	fixserials.exe	85
PID 440 wrote to memory of 2564	440	fixserials.exe	85
PID 440 wrote to memory of 732	440	fixserials.exe	87
PID 440 wrote to memory of 732	440	fixserials.exe	87
PID 440 wrote to memory of 2232	440	fixserials.exe	89
PID 440 wrote to memory of 2232	440	fixserials.exe	89
PID 440 wrote to memory of 996	440	fixserials.exe	91
PID 440 wrote to memory of 996	440	fixserials.exe	91
PID 440 wrote to memory of 1552	440	fixserials.exe	93
PID 440 wrote to memory of 1552	440	fixserials.exe	93
PID 440 wrote to memory of 8	440	fixserials.exe	95
PID 440 wrote to memory of 8	440	fixserials.exe	95
PID 440 wrote to memory of 1648	440	fixserials.exe	97
PID 440 wrote to memory of 1648	440	fixserials.exe	97
PID 440 wrote to memory of 972	440	fixserials.exe	99
PID 440 wrote to memory of 972	440	fixserials.exe	99
PID 440 wrote to memory of 1620	440	fixserials.exe	101
PID 440 wrote to memory of 1620	440	fixserials.exe	101
PID 440 wrote to memory of 1856	440	fixserials.exe	103
PID 440 wrote to memory of 1856	440	fixserials.exe	103
PID 1856 wrote to memory of 3152	1856	cmd.exe	105
PID 1856 wrote to memory of 3152	1856	cmd.exe	105

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3004	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Perm Spoofer\dumped files\fixserials.exe
"C:\Users\Admin\AppData\Local\Temp\Perm Spoofer\dumped files\fixserials.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:440
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4508
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Perm Spoofer\dumped files\fixserials.exe"
  2⤵
  - Views/modifies file attributes
  PID:3004
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Perm Spoofer\dumped files\fixserials.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2564
- 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:732
- 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:2232
- 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:996
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1552
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:8
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1648
- 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:972
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1620
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Perm Spoofer\dumped files\fixserials.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1856
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:3152

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
1a9fa92a4f2e2ec9e244d43a6a4f8fb9

SHA1
9910190edfaccece1dfcc1d92e357772f5dae8f7

SHA256
0ee052d5333fd5fd86bc84856fec98e045f077a7ac8051651bf7c521b9706888

SHA512
5d2361476fa22200e6f83883efe7dcb8c3fe7dae8d56e04e28a36e9ae1270c327b6aa161d92b239593da7661289d002c574446ecfd6bd19928209aae25e3ef64

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

Filesize
948B

MD5
441a842138038e6385e430a90d7ea608

SHA1
7b3712d2cdd37e10ee9b3994131ee5175e920f01

SHA256
47592f3324179912d3bdba336b9e75568c2c5f1a9fb37c1ba9f0db9df822164c

SHA512
9dbddc3216f2a132ae3961b3aeac2c5b8828dcc9292f6c5bf1171c47453aa8687f92658818d771413492c0ea565e9ede17b9c03e427af9dc2ac21a78369a6666

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

Filesize
1KB

MD5
cd5b2555a0e703bc746e242654a09c2f

SHA1
4021bfba22c0fce16709bfa6140d11272b7bd8b4

SHA256
73679042b477828c6c8400590ca1434f5f6b7379aede1442f80bb9ede3bc7811

SHA512
404a94bbc1cbcf98dba90160ab65a8acc5a1660d801bf7425ab1fe641599bda1b6494d4d6b65c6584e4ca6c1dea4b1acfde88e4a6d216194dca3b6ae6ca605f1

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

Filesize
1KB

MD5
9cdc6124fadc469d2a74bfdbc5bf9285

SHA1
555fcdac2d239ad1c892bbe3fc40b924a602027d

SHA256
e5bcbfd44bb017062d5aef3bf748528513f703a468413420f3fbf8d247e5e4af

SHA512
59f1c423d2c6bcba2731489a70299207b4dfe34ce6e812d238d385c504ec96c38ecc546256e23a2dc54ff114abc122c1c5095d7280172bd69b40f07592febf1e

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hu00jslw.s0s.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/440-66-0x0000021761FF0000-0x0000021761FFA000-memory.dmp

Filesize
40KB

Download
memory/440-31-0x0000021762040000-0x000002176205E000-memory.dmp

Filesize
120KB

Download
memory/440-86-0x00007FFFAAA20000-0x00007FFFAB4E2000-memory.dmp

Filesize
10.8MB

Download
memory/440-67-0x0000021762020000-0x0000021762032000-memory.dmp

Filesize
72KB

Download
memory/440-2-0x00007FFFAAA20000-0x00007FFFAB4E2000-memory.dmp

Filesize
10.8MB

Download
memory/440-29-0x0000021762060000-0x00000217620D6000-memory.dmp

Filesize
472KB

Download
memory/440-30-0x00000217620E0000-0x0000021762130000-memory.dmp

Filesize
320KB

Download
memory/440-0-0x00007FFFAAA23000-0x00007FFFAAA25000-memory.dmp

Filesize
8KB

Download
memory/440-1-0x0000021747890000-0x00000217478D0000-memory.dmp

Filesize
256KB

Download
memory/2564-14-0x00007FFFAAA20000-0x00007FFFAB4E2000-memory.dmp

Filesize
10.8MB

Download
memory/2564-11-0x00000146B4270000-0x00000146B4292000-memory.dmp

Filesize
136KB

Download
memory/2564-13-0x00007FFFAAA20000-0x00007FFFAB4E2000-memory.dmp

Filesize
10.8MB

Download
memory/2564-12-0x00007FFFAAA20000-0x00007FFFAB4E2000-memory.dmp

Filesize
10.8MB

Download
memory/2564-17-0x00007FFFAAA20000-0x00007FFFAB4E2000-memory.dmp

Filesize
10.8MB

Download