umbral | e73bb9abd07a3075baacff2be37bf9b32bc612de7e03af85ef4d51ff7b494e94

Analysis

max time kernel
94s
max time network
100s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
11-09-2024 20:28

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General

Target

Image Logger/Src/Files/upx.exe
Size

229KB
MD5

3191f1be1378fe37eb86efe885252351
SHA1

e242bc1a4a1b09dc0936a966153449a7afd227ff
SHA256

d5e77c60ebc90e48aa63369619fb8a048867aa1820c119371fb89d3b707324fc
SHA512

f2e9f3bbc4456034a0d233f0aca93de4fd5177e028d8f3208248457bc061574ac1a3615e565ca9d54cf41f68df6ac6f03b44c0dbaae0f56cc569440f67af204a
SSDEEP

6144:FloZM+rIkd8g+EtXHkv/iD4o+7Cw7ByallgRj++74T7b8e1mA9i:HoZtL+EP8V7Cw7ByallgRj++74DVU

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral4/memory/4336-1-0x000002C8658E0000-0x000002C865920000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

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
208	powershell.exe
3076	powershell.exe
3932	powershell.exe
4540	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	upx.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
16	discord.com
17	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

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
3148	cmd.exe
4496	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2312	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4496	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4336	upx.exe
208	powershell.exe
208	powershell.exe
3076	powershell.exe
3076	powershell.exe
3932	powershell.exe
3932	powershell.exe
4076	powershell.exe
4076	powershell.exe
4540	powershell.exe
4540	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4336	upx.exe
Token: SeIncreaseQuotaPrivilege	2296	wmic.exe
Token: SeSecurityPrivilege	2296	wmic.exe
Token: SeTakeOwnershipPrivilege	2296	wmic.exe
Token: SeLoadDriverPrivilege	2296	wmic.exe
Token: SeSystemProfilePrivilege	2296	wmic.exe
Token: SeSystemtimePrivilege	2296	wmic.exe
Token: SeProfSingleProcessPrivilege	2296	wmic.exe
Token: SeIncBasePriorityPrivilege	2296	wmic.exe
Token: SeCreatePagefilePrivilege	2296	wmic.exe
Token: SeBackupPrivilege	2296	wmic.exe
Token: SeRestorePrivilege	2296	wmic.exe
Token: SeShutdownPrivilege	2296	wmic.exe
Token: SeDebugPrivilege	2296	wmic.exe
Token: SeSystemEnvironmentPrivilege	2296	wmic.exe
Token: SeRemoteShutdownPrivilege	2296	wmic.exe
Token: SeUndockPrivilege	2296	wmic.exe
Token: SeManageVolumePrivilege	2296	wmic.exe
Token: 33	2296	wmic.exe
Token: 34	2296	wmic.exe
Token: 35	2296	wmic.exe
Token: 36	2296	wmic.exe
Token: SeIncreaseQuotaPrivilege	2296	wmic.exe
Token: SeSecurityPrivilege	2296	wmic.exe
Token: SeTakeOwnershipPrivilege	2296	wmic.exe
Token: SeLoadDriverPrivilege	2296	wmic.exe
Token: SeSystemProfilePrivilege	2296	wmic.exe
Token: SeSystemtimePrivilege	2296	wmic.exe
Token: SeProfSingleProcessPrivilege	2296	wmic.exe
Token: SeIncBasePriorityPrivilege	2296	wmic.exe
Token: SeCreatePagefilePrivilege	2296	wmic.exe
Token: SeBackupPrivilege	2296	wmic.exe
Token: SeRestorePrivilege	2296	wmic.exe
Token: SeShutdownPrivilege	2296	wmic.exe
Token: SeDebugPrivilege	2296	wmic.exe
Token: SeSystemEnvironmentPrivilege	2296	wmic.exe
Token: SeRemoteShutdownPrivilege	2296	wmic.exe
Token: SeUndockPrivilege	2296	wmic.exe
Token: SeManageVolumePrivilege	2296	wmic.exe
Token: 33	2296	wmic.exe
Token: 34	2296	wmic.exe
Token: 35	2296	wmic.exe
Token: 36	2296	wmic.exe
Token: SeDebugPrivilege	208	powershell.exe
Token: SeDebugPrivilege	3076	powershell.exe
Token: SeDebugPrivilege	3932	powershell.exe
Token: SeDebugPrivilege	4076	powershell.exe
Token: SeIncreaseQuotaPrivilege	4860	wmic.exe
Token: SeSecurityPrivilege	4860	wmic.exe
Token: SeTakeOwnershipPrivilege	4860	wmic.exe
Token: SeLoadDriverPrivilege	4860	wmic.exe
Token: SeSystemProfilePrivilege	4860	wmic.exe
Token: SeSystemtimePrivilege	4860	wmic.exe
Token: SeProfSingleProcessPrivilege	4860	wmic.exe
Token: SeIncBasePriorityPrivilege	4860	wmic.exe
Token: SeCreatePagefilePrivilege	4860	wmic.exe
Token: SeBackupPrivilege	4860	wmic.exe
Token: SeRestorePrivilege	4860	wmic.exe
Token: SeShutdownPrivilege	4860	wmic.exe
Token: SeDebugPrivilege	4860	wmic.exe
Token: SeSystemEnvironmentPrivilege	4860	wmic.exe
Token: SeRemoteShutdownPrivilege	4860	wmic.exe
Token: SeUndockPrivilege	4860	wmic.exe
Token: SeManageVolumePrivilege	4860	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4336 wrote to memory of 2296	4336	upx.exe	85
PID 4336 wrote to memory of 2296	4336	upx.exe	85
PID 4336 wrote to memory of 3644	4336	upx.exe	90
PID 4336 wrote to memory of 3644	4336	upx.exe	90
PID 4336 wrote to memory of 208	4336	upx.exe	92
PID 4336 wrote to memory of 208	4336	upx.exe	92
PID 4336 wrote to memory of 3076	4336	upx.exe	96
PID 4336 wrote to memory of 3076	4336	upx.exe	96
PID 4336 wrote to memory of 3932	4336	upx.exe	98
PID 4336 wrote to memory of 3932	4336	upx.exe	98
PID 4336 wrote to memory of 4076	4336	upx.exe	100
PID 4336 wrote to memory of 4076	4336	upx.exe	100
PID 4336 wrote to memory of 4860	4336	upx.exe	103
PID 4336 wrote to memory of 4860	4336	upx.exe	103
PID 4336 wrote to memory of 4588	4336	upx.exe	105
PID 4336 wrote to memory of 4588	4336	upx.exe	105
PID 4336 wrote to memory of 960	4336	upx.exe	107
PID 4336 wrote to memory of 960	4336	upx.exe	107
PID 4336 wrote to memory of 4540	4336	upx.exe	109
PID 4336 wrote to memory of 4540	4336	upx.exe	109
PID 4336 wrote to memory of 2312	4336	upx.exe	112
PID 4336 wrote to memory of 2312	4336	upx.exe	112
PID 4336 wrote to memory of 3148	4336	upx.exe	116
PID 4336 wrote to memory of 3148	4336	upx.exe	116
PID 3148 wrote to memory of 4496	3148	cmd.exe	118
PID 3148 wrote to memory of 4496	3148	cmd.exe	118

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3644	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Image Logger\Src\Files\upx.exe
"C:\Users\Admin\AppData\Local\Temp\Image Logger\Src\Files\upx.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4336
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2296
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Image Logger\Src\Files\upx.exe"
  2⤵
  - Views/modifies file attributes
  PID:3644
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Image Logger\Src\Files\upx.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:208
- 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:3076
- 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:3932
- 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:4076
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4860
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:4588
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:960
- 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:4540
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2312
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Image Logger\Src\Files\upx.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3148
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4496

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
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
948B

MD5
966914e2e771de7a4a57a95b6ecfa8a9

SHA1
7a32282fd51dd032967ed4d9a40cc57e265aeff2

SHA256
98d3c70d7004fa807897317bd6cd3e977b9b6c72d4d2565aca0f9f8b1c315cba

SHA512
dc39c7124a9c7c8d4c7e8e16290c46360b8d9a8f4e43edaacbbeb09bdcf20159a53db54d2b322372001b6a3de52b2f88e9088b5fdbc7638816ae0d122bb015f5

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

Filesize
1KB

MD5
88be3bc8a7f90e3953298c0fdbec4d72

SHA1
f4969784ad421cc80ef45608727aacd0f6bf2e4b

SHA256
533c8470b41084e40c5660569ebbdb7496520d449629a235e8053e84025f348a

SHA512
4fce64e2dacddbc03314048fef1ce356ee2647c14733da121c23c65507eeb8d721d6b690ad5463319b364dc4fa95904ad6ab096907f32918e3406ef438a6ef7c

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

Filesize
1KB

MD5
d4a2f28ade8dd97f0adb0f71cc027c2d

SHA1
204f23cd6e8afb444711b24a77e5ad12a215042f

SHA256
feb979bbc240009176d8263f786083ea987071229008d0fdca424404b00d06ea

SHA512
729b70695712a6a19d6c5428a8dcab04acc4f8af61f620d5b049459a7c643c0d081b585beedca10d97a3ffa208106e48b5e2719972f31b695ed1956d7eff155a

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jw4iwucq.2x2.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/208-4-0x00007FF960200000-0x00007FF960CC1000-memory.dmp

Filesize
10.8MB

Download
memory/208-10-0x0000025CC7210000-0x0000025CC7232000-memory.dmp

Filesize
136KB

Download
memory/208-15-0x00007FF960200000-0x00007FF960CC1000-memory.dmp

Filesize
10.8MB

Download
memory/208-18-0x00007FF960200000-0x00007FF960CC1000-memory.dmp

Filesize
10.8MB

Download
memory/208-3-0x00007FF960200000-0x00007FF960CC1000-memory.dmp

Filesize
10.8MB

Download
memory/4336-34-0x000002C867660000-0x000002C8676B0000-memory.dmp

Filesize
320KB

Download
memory/4336-33-0x000002C87FFA0000-0x000002C880016000-memory.dmp

Filesize
472KB

Download
memory/4336-35-0x000002C865D10000-0x000002C865D2E000-memory.dmp

Filesize
120KB

Download
memory/4336-1-0x000002C8658E0000-0x000002C865920000-memory.dmp

Filesize
256KB

Download
memory/4336-0-0x00007FF960203000-0x00007FF960205000-memory.dmp

Filesize
8KB

Download
memory/4336-68-0x000002C865D00000-0x000002C865D0A000-memory.dmp

Filesize
40KB

Download
memory/4336-69-0x000002C867610000-0x000002C867622000-memory.dmp

Filesize
72KB

Download
memory/4336-2-0x00007FF960200000-0x00007FF960CC1000-memory.dmp

Filesize
10.8MB

Download
memory/4336-84-0x00007FF960203000-0x00007FF960205000-memory.dmp

Filesize
8KB

Download
memory/4336-85-0x00007FF960200000-0x00007FF960CC1000-memory.dmp

Filesize
10.8MB

Download
memory/4336-89-0x00007FF960200000-0x00007FF960CC1000-memory.dmp

Filesize
10.8MB

Download