Malware Analysis Report

2024-10-18 23:09

Sample ID 240522-cs633shc38
Target c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5.exe
SHA256 c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5
Tags
guloader downloader
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

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: behavioral5

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5

Threat Level: Known bad

The file c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5.exe was found to be: Known bad.

Malicious Activity Summary

guloader downloader

Guloader,Cloudeye

Loads dropped DLL

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious use of SetThreadContext

Drops file in Program Files directory

Program crash

Unsigned PE

Enumerates physical storage devices

Suspicious behavior: MapViewOfSection

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-22 02:21

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-22 02:21

Reported

2024-05-22 02:23

Platform

win10v2004-20240426-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5.exe"

Signatures

Guloader,Cloudeye

downloader guloader

Drops file in Program Files directory

Description Indicator Process Target
File opened for modification C:\Program Files (x86)\Common Files\pernille\aftershine.ini C:\Users\Admin\AppData\Local\Temp\c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5.exe N/A
File opened for modification C:\Program Files (x86)\bevirket\kabinettets.bef C:\Users\Admin\AppData\Local\Temp\c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5.exe N/A
File opened for modification C:\Program Files (x86)\barbatimao.Gro C:\Users\Admin\AppData\Local\Temp\c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5.exe N/A

Enumerates physical storage devices

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5.exe

"C:\Users\Admin\AppData\Local\Temp\c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5.exe"

C:\Users\Admin\AppData\Local\Temp\c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5.exe

"C:\Users\Admin\AppData\Local\Temp\c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
US 8.8.8.8:53 24.173.189.20.in-addr.arpa udp
LV 46.183.222.32:80 tcp

Files

C:\Users\Admin\AppData\Local\Temp\nsf5381.tmp\System.dll

MD5 75ed96254fbf894e42058062b4b4f0d1
SHA1 996503f1383b49021eb3427bc28d13b5bbd11977
SHA256 a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7
SHA512 58174896db81d481947b8745dafe3a02c150f3938bb4543256e8cce1145154e016d481df9fe68dac6d48407c62cbe20753320ebd5fe5e84806d07ce78e0eb0c4

memory/892-16-0x0000000004930000-0x0000000006970000-memory.dmp

memory/892-17-0x0000000076EC1000-0x0000000076FE1000-memory.dmp

memory/892-18-0x0000000073B14000-0x0000000073B15000-memory.dmp

memory/1836-19-0x0000000001730000-0x0000000003770000-memory.dmp

memory/892-20-0x0000000004930000-0x0000000006970000-memory.dmp

memory/1836-21-0x00000000004D0000-0x0000000001724000-memory.dmp

memory/1836-23-0x0000000001730000-0x0000000003770000-memory.dmp

memory/892-28-0x0000000004930000-0x0000000006970000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-05-22 02:21

Reported

2024-05-22 02:23

Platform

win7-20240221-en

Max time kernel

117s

Max time network

117s

Command Line

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

Signatures

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 2060 -s 220

Network

N/A

Files

N/A

Analysis: behavioral4

Detonation Overview

Submitted

2024-05-22 02:21

Reported

2024-05-22 02:23

Platform

win10v2004-20240426-en

Max time kernel

134s

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4792 wrote to memory of 4424 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4792 wrote to memory of 4424 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4792 wrote to memory of 4424 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 408 -p 4424 -ip 4424

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4424 -s 612

Network

Country Destination Domain Proto
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp

Files

N/A

Analysis: behavioral5

Detonation Overview

Submitted

2024-05-22 02:21

Reported

2024-05-22 02:23

Platform

macos-20240410-en

Max time kernel

149s

Max time network

150s

Command Line

[sh -c sudo /bin/zsh -c "open /Users/run/Raasejlenes106.app"]

Signatures

N/A

Processes

/bin/sh

[sh -c sudo /bin/zsh -c "open /Users/run/Raasejlenes106.app"]

/bin/bash

[sh -c sudo /bin/zsh -c "open /Users/run/Raasejlenes106.app"]

/usr/bin/sudo

[sudo /bin/zsh -c open /Users/run/Raasejlenes106.app]

/bin/zsh

[/bin/zsh -c open /Users/run/Raasejlenes106.app]

/usr/bin/open

[open /Users/run/Raasejlenes106.app]

/usr/bin/pluginkit

[/usr/bin/pluginkit -e ignore -i com.microsoft.OneDrive.FinderSync]

/usr/sbin/spctl

[/usr/sbin/spctl --assess --type execute /var/folders/pq/yy2b5ptn4cz739jgclj4m1wm0000gp/T/OneDriveUpdater0BF23177/OneDrive.app]

/usr/sbin/spctl

[/usr/sbin/spctl --assess --type execute /Applications/OneDrive.app]

/bin/launchctl

[/bin/launchctl kill SIGTERM system/com.microsoft.OneDriveUpdaterDaemon]

/bin/launchctl

[/bin/launchctl kill SIGTERM system/com.microsoft.OneDriveStandaloneUpdaterDaemon]

/usr/libexec/xpcproxy

[xpcproxy com.apple.corespotlightservice.725FD30A-6064-6C02-CC51-5DDB8891B57E]

/System/Library/Frameworks/CoreSpotlight.framework/CoreSpotlightService

[/System/Library/Frameworks/CoreSpotlight.framework/CoreSpotlightService]

Network

Country Destination Domain Proto
US 151.101.67.6:443 tcp
US 8.8.8.8:53 mobile.events.data.trafficmanager.net udp
US 20.42.73.27:443 tcp
US 8.8.8.8:53 api.apple-cloudkit.fe2.apple-dns.net udp
GB 17.250.81.67:443 api.apple-cloudkit.fe2.apple-dns.net tcp
US 8.8.8.8:53 bag-cdn-lb.itunes-apple.com.akadns.net udp
N/A 224.0.0.251:5353 udp
US 8.8.8.8:53 cds.apple.com udp
BE 104.68.86.71:443 cds.apple.com tcp
US 8.8.8.8:53 help.apple.com udp
SE 104.73.93.106:443 help.apple.com tcp
SE 104.73.93.106:443 help.apple.com tcp

Files

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-22 02:21

Reported

2024-05-22 02:23

Platform

win7-20240220-en

Max time kernel

146s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5.exe"

Signatures

Guloader,Cloudeye

downloader guloader

Drops file in Program Files directory

Description Indicator Process Target
File opened for modification C:\Program Files (x86)\Common Files\pernille\aftershine.ini C:\Users\Admin\AppData\Local\Temp\c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5.exe N/A
File opened for modification C:\Program Files (x86)\bevirket\kabinettets.bef C:\Users\Admin\AppData\Local\Temp\c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5.exe N/A
File opened for modification C:\Program Files (x86)\barbatimao.Gro C:\Users\Admin\AppData\Local\Temp\c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5.exe N/A

Enumerates physical storage devices

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2764 wrote to memory of 2592 N/A C:\Users\Admin\AppData\Local\Temp\c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5.exe C:\Users\Admin\AppData\Local\Temp\c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5.exe
PID 2764 wrote to memory of 2592 N/A C:\Users\Admin\AppData\Local\Temp\c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5.exe C:\Users\Admin\AppData\Local\Temp\c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5.exe
PID 2764 wrote to memory of 2592 N/A C:\Users\Admin\AppData\Local\Temp\c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5.exe C:\Users\Admin\AppData\Local\Temp\c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5.exe
PID 2764 wrote to memory of 2592 N/A C:\Users\Admin\AppData\Local\Temp\c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5.exe C:\Users\Admin\AppData\Local\Temp\c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5.exe
PID 2764 wrote to memory of 2592 N/A C:\Users\Admin\AppData\Local\Temp\c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5.exe C:\Users\Admin\AppData\Local\Temp\c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5.exe
PID 2764 wrote to memory of 2592 N/A C:\Users\Admin\AppData\Local\Temp\c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5.exe C:\Users\Admin\AppData\Local\Temp\c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5.exe

Processes

C:\Users\Admin\AppData\Local\Temp\c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5.exe

"C:\Users\Admin\AppData\Local\Temp\c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5.exe"

C:\Users\Admin\AppData\Local\Temp\c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5.exe

"C:\Users\Admin\AppData\Local\Temp\c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5.exe"

Network

Country Destination Domain Proto
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp
LV 46.183.222.32:80 tcp

Files

\Users\Admin\AppData\Local\Temp\nsd28C7.tmp\System.dll

MD5 75ed96254fbf894e42058062b4b4f0d1
SHA1 996503f1383b49021eb3427bc28d13b5bbd11977
SHA256 a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7
SHA512 58174896db81d481947b8745dafe3a02c150f3938bb4543256e8cce1145154e016d481df9fe68dac6d48407c62cbe20753320ebd5fe5e84806d07ce78e0eb0c4

memory/2764-17-0x0000000004150000-0x0000000006190000-memory.dmp

memory/2764-18-0x00000000776A1000-0x00000000777A2000-memory.dmp

memory/2764-19-0x00000000776A0000-0x0000000077849000-memory.dmp

memory/2592-20-0x00000000776A0000-0x0000000077849000-memory.dmp

memory/2764-21-0x0000000004150000-0x0000000006190000-memory.dmp

memory/2592-22-0x00000000004D0000-0x0000000001532000-memory.dmp

memory/2764-28-0x0000000004150000-0x0000000006190000-memory.dmp