Malware Analysis Report

2024-11-15 09:59

Sample ID 241111-rszrbs1ame
Target P52mX04112024145925383.exe
SHA256 0d9e0293185f77ef323b8686cabcd7e7562af2899bf565ccef257d4b259c7b81
Tags
guloader discovery downloader
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: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

0d9e0293185f77ef323b8686cabcd7e7562af2899bf565ccef257d4b259c7b81

Threat Level: Known bad

The file P52mX04112024145925383.exe was found to be: Known bad.

Malicious Activity Summary

guloader discovery downloader

Guloader,Cloudeye

Guloader family

Loads dropped DLL

Legitimate hosting services abused for malware hosting/C2

Suspicious use of SetThreadContext

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of NtCreateThreadExHideFromDebugger

Drops file in Windows directory

Program crash

Unsigned PE

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious behavior: MapViewOfSection

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-11 14:28

Signatures

Unsigned PE

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

2024-11-11 14:28

Reported

2024-11-11 14:30

Platform

win7-20241023-en

Max time kernel

121s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe"

Signatures

Guloader family

guloader

Guloader,Cloudeye

downloader guloader

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.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:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2816 set thread context of 2072 N/A C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\resources\Pocherings.ini C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe N/A
File created C:\Windows\porencephalitis.lnk C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe N/A
File opened for modification C:\Windows\resources\0409\overkrop\nasosubnasal.ini C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe N/A
File opened for modification C:\Windows\porencephalitis.lnk C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe

"C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe"

C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe

"C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 drive.google.com udp
GB 142.250.187.206:443 drive.google.com tcp
US 8.8.8.8:53 c.pki.goog udp
GB 142.250.187.227:80 c.pki.goog tcp
US 8.8.8.8:53 o.pki.goog udp
GB 142.250.187.227:80 o.pki.goog tcp
US 8.8.8.8:53 drive.usercontent.google.com udp
GB 172.217.16.225:443 drive.usercontent.google.com tcp

Files

C:\Windows\porencephalitis.lnk

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

\Users\Admin\AppData\Local\Temp\nst7772.tmp\System.dll

MD5 d968cb2b98b83c03a9f02dd9b8df97dc
SHA1 d784c9b7a92dce58a5038beb62a48ff509e166a0
SHA256 a4ec98011ef99e595912718c1a1bf1aa67bfc2192575729d42f559d01f67b95c
SHA512 2ee41dc68f329a1519a8073ece7d746c9f3bf45d8ef3b915deb376af37e26074134af5f83c8af0fe0ab227f0d1acca9f37e5ca7ae37c46c3bcc0331fe5e2b97e

memory/2816-295-0x0000000003F80000-0x00000000056BD000-memory.dmp

memory/2816-296-0x0000000003F80000-0x00000000056BD000-memory.dmp

memory/2816-297-0x0000000076D81000-0x0000000076E82000-memory.dmp

memory/2816-298-0x0000000076D80000-0x0000000076F29000-memory.dmp

memory/2816-299-0x0000000003F80000-0x00000000056BD000-memory.dmp

memory/2072-301-0x0000000076D80000-0x0000000076F29000-memory.dmp

memory/2072-300-0x0000000000400000-0x0000000001462000-memory.dmp

memory/2072-323-0x0000000000400000-0x0000000001462000-memory.dmp

memory/2072-324-0x0000000000400000-0x0000000001462000-memory.dmp

memory/2072-325-0x0000000000400000-0x0000000001462000-memory.dmp

memory/2072-326-0x0000000000400000-0x0000000001462000-memory.dmp

memory/2072-327-0x0000000000400000-0x0000000001462000-memory.dmp

memory/2072-328-0x0000000000400000-0x0000000001462000-memory.dmp

memory/2072-334-0x0000000000400000-0x0000000001462000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-11 14:28

Reported

2024-11-11 14:30

Platform

win10v2004-20241007-en

Max time kernel

148s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe"

Signatures

Guloader family

guloader

Guloader,Cloudeye

downloader guloader

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.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:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4912 set thread context of 4492 N/A C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\resources\Pocherings.ini C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe N/A
File created C:\Windows\porencephalitis.lnk C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe N/A
File opened for modification C:\Windows\resources\0409\overkrop\nasosubnasal.ini C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe N/A
File opened for modification C:\Windows\porencephalitis.lnk C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe

"C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe"

C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe

"C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 67.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 drive.google.com udp
GB 142.250.187.206:443 drive.google.com tcp
US 8.8.8.8:53 c.pki.goog udp
US 8.8.8.8:53 206.187.250.142.in-addr.arpa udp
US 8.8.8.8:53 227.187.250.142.in-addr.arpa udp
GB 142.250.187.227:80 c.pki.goog tcp
US 8.8.8.8:53 o.pki.goog udp
GB 142.250.187.227:80 o.pki.goog tcp
US 8.8.8.8:53 drive.usercontent.google.com udp
GB 172.217.16.225:443 drive.usercontent.google.com tcp
US 8.8.8.8:53 225.16.217.172.in-addr.arpa udp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

C:\Windows\porencephalitis.lnk

MD5 a6de6b3ada7a62086411af9a67d1ed48
SHA1 1424cb71911d3925143869646da5085d4896638a
SHA256 35b2b03b1ddade5a26580af78b67eae30ebb8825795fa57802d8f56b5ca8a27b
SHA512 d2457d69d0dd8ec67f8df8f01416c9a175502b9a212d841b3425057ca790966b36011b82995ef942f5eb78527b5728649b1ca626b774a054a593a78c13ca339d

C:\Users\Admin\AppData\Local\Temp\nsd759E.tmp\System.dll

MD5 d968cb2b98b83c03a9f02dd9b8df97dc
SHA1 d784c9b7a92dce58a5038beb62a48ff509e166a0
SHA256 a4ec98011ef99e595912718c1a1bf1aa67bfc2192575729d42f559d01f67b95c
SHA512 2ee41dc68f329a1519a8073ece7d746c9f3bf45d8ef3b915deb376af37e26074134af5f83c8af0fe0ab227f0d1acca9f37e5ca7ae37c46c3bcc0331fe5e2b97e

memory/4912-294-0x00000000033A0000-0x0000000004ADD000-memory.dmp

memory/4912-295-0x0000000077471000-0x0000000077591000-memory.dmp

memory/4912-296-0x0000000074165000-0x0000000074166000-memory.dmp

memory/4912-297-0x00000000033A0000-0x0000000004ADD000-memory.dmp

memory/4912-298-0x00000000033A0000-0x0000000004ADD000-memory.dmp

memory/4492-299-0x0000000000400000-0x0000000001654000-memory.dmp

memory/4492-300-0x0000000001660000-0x0000000002D9D000-memory.dmp

memory/4492-301-0x00000000774F8000-0x00000000774F9000-memory.dmp

memory/4492-303-0x0000000077515000-0x0000000077516000-memory.dmp

memory/4492-302-0x0000000001660000-0x0000000002D9D000-memory.dmp

memory/4492-316-0x0000000000400000-0x0000000001654000-memory.dmp

memory/4492-317-0x0000000000400000-0x0000000001654000-memory.dmp

memory/4492-318-0x0000000077471000-0x0000000077591000-memory.dmp

memory/4492-319-0x0000000000400000-0x0000000001654000-memory.dmp

memory/4492-320-0x0000000000400000-0x0000000001654000-memory.dmp

memory/4492-323-0x0000000000400000-0x0000000001654000-memory.dmp

memory/4492-324-0x0000000001660000-0x0000000002D9D000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-11-11 14:28

Reported

2024-11-11 14:30

Platform

win7-20241010-en

Max time kernel

119s

Max time network

121s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

Signatures

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1072 -s 220

Network

N/A

Files

N/A

Analysis: behavioral4

Detonation Overview

Submitted

2024-11-11 14:28

Reported

2024-11-11 14:30

Platform

win10v2004-20241007-en

Max time kernel

148s

Max time network

151s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

Signatures

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4076 wrote to memory of 2936 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4076 wrote to memory of 2936 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4076 wrote to memory of 2936 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 2936 -ip 2936

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2936 -s 612

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp

Files

N/A