Malware Analysis Report

2024-12-06 03:26

Sample ID 241022-q77vtazglk
Target 22102024_1355_21102024_transferencia-256893035-145529-sanlccjavap0004-145.rar
SHA256 cd9b59ba78241886adfbed588862d62006d5a4a1a0903516e5b2fc0a7b5ece03
Tags
discovery guloader downloader
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

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

cd9b59ba78241886adfbed588862d62006d5a4a1a0903516e5b2fc0a7b5ece03

Threat Level: Known bad

The file 22102024_1355_21102024_transferencia-256893035-145529-sanlccjavap0004-145.rar was found to be: Known bad.

Malicious Activity Summary

discovery guloader downloader

Guloader,Cloudeye

Loads dropped DLL

Legitimate hosting services abused for malware hosting/C2

Suspicious use of NtCreateThreadExHideFromDebugger

Suspicious use of SetThreadContext

Suspicious use of NtSetInformationThreadHideFromDebugger

Drops file in Windows directory

Enumerates physical storage devices

Program crash

System Location Discovery: System Language Discovery

Unsigned PE

NSIS installer

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious behavior: MapViewOfSection

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-22 13:55

Signatures

Unsigned PE

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

NSIS installer

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

Analysis: behavioral3

Detonation Overview

Submitted

2024-10-22 13:55

Reported

2024-10-22 14:00

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 2448 -s 224

Network

N/A

Files

N/A

Analysis: behavioral4

Detonation Overview

Submitted

2024-10-22 13:55

Reported

2024-10-22 14:00

Platform

win10v2004-20241007-en

Max time kernel

133s

Max time network

204s

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 2536 wrote to memory of 2600 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2536 wrote to memory of 2600 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2536 wrote to memory of 2600 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 424 -p 2600 -ip 2600

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2600 -s 612

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 98.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp

Files

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-22 13:55

Reported

2024-10-22 14:00

Platform

win7-20240903-en

Max time kernel

122s

Max time network

178s

Command Line

"C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.exe"

Signatures

Guloader,Cloudeye

downloader guloader

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\transferencia-256893035-145529-sanlccjavap0004-145.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\resources\Trnregimenternes\totalsanerende.Obs202 C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.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\transferencia-256893035-145529-sanlccjavap0004-145.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3068 wrote to memory of 1080 N/A C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.exe C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.exe
PID 3068 wrote to memory of 1080 N/A C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.exe C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.exe
PID 3068 wrote to memory of 1080 N/A C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.exe C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.exe
PID 3068 wrote to memory of 1080 N/A C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.exe C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.exe
PID 3068 wrote to memory of 1080 N/A C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.exe C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.exe
PID 3068 wrote to memory of 1080 N/A C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.exe C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.exe
PID 1080 wrote to memory of 3020 N/A C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.exe C:\Windows\SysWOW64\WerFault.exe
PID 1080 wrote to memory of 3020 N/A C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.exe C:\Windows\SysWOW64\WerFault.exe
PID 1080 wrote to memory of 3020 N/A C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.exe C:\Windows\SysWOW64\WerFault.exe
PID 1080 wrote to memory of 3020 N/A C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.exe

"C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.exe"

C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.exe

"C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1080 -s 68

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 142.250.178.3:80 c.pki.goog tcp
US 8.8.8.8:53 o.pki.goog udp
GB 142.250.178.3:80 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
US 8.8.8.8:53 crl.microsoft.com udp
GB 2.19.117.22:80 crl.microsoft.com tcp

Files

C:\Users\Admin\Music\incinerations.lnk

MD5 e2e60b998ea924cd54134b284a7de550
SHA1 a53202dab13d8eb2fec6a6d4d4d1005d2be067fe
SHA256 fa135daf539eb673eb40f3be52a530aebc059984c43fdcc7c164ca181481bcc1
SHA512 58ffe0838f097aedb7fb7f4d86c00602e2adad0f511979df8649fee3f8ffa28bb9b901d617655ae6d79ebc6853c7cbfef03f3c58a98dfd790957498e6cf8a33d

\Users\Admin\AppData\Local\Temp\nsjA758.tmp\System.dll

MD5 cf85183b87314359488b850f9e97a698
SHA1 6b6c790037eec7ebea4d05590359cb4473f19aea
SHA256 3b6a5cb2a3c091814fce297c04fb677f72732fb21615102c62a195fdc2e7dfac
SHA512 fe484b3fc89aeed3a6b71b90b90ea11a787697e56be3077154b6ddc2646850f6c38589ed422ff792e391638a80a778d33f22e891e76b5d65896c6fb4696a2c3b

memory/3068-429-0x00000000036D0000-0x0000000006529000-memory.dmp

memory/3068-430-0x00000000036D0000-0x0000000006529000-memory.dmp

memory/3068-432-0x0000000077090000-0x0000000077239000-memory.dmp

memory/3068-431-0x0000000077091000-0x0000000077192000-memory.dmp

memory/1080-433-0x0000000000400000-0x0000000001462000-memory.dmp

memory/1080-434-0x0000000077090000-0x0000000077239000-memory.dmp

memory/3068-435-0x00000000036D0000-0x0000000006529000-memory.dmp

memory/1080-457-0x0000000000400000-0x0000000001462000-memory.dmp

memory/1080-456-0x0000000000400000-0x0000000001462000-memory.dmp

memory/1080-458-0x0000000000400000-0x0000000001462000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-22 13:55

Reported

2024-10-22 14:00

Platform

win10v2004-20241007-en

Max time kernel

298s

Max time network

272s

Command Line

"C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.exe"

Signatures

Guloader,Cloudeye

downloader guloader

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\transferencia-256893035-145529-sanlccjavap0004-145.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\resources\Trnregimenternes\totalsanerende.Obs202 C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.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\transferencia-256893035-145529-sanlccjavap0004-145.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.exe

"C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.exe"

C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.exe

"C:\Users\Admin\AppData\Local\Temp\transferencia-256893035-145529-sanlccjavap0004-145.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
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 142.250.178.3:80 c.pki.goog tcp
US 8.8.8.8:53 o.pki.goog udp
GB 142.250.178.3:80 o.pki.goog tcp
US 8.8.8.8:53 3.178.250.142.in-addr.arpa udp
US 8.8.8.8:53 238.16.217.172.in-addr.arpa udp
US 8.8.8.8:53 drive.usercontent.google.com udp
GB 216.58.201.97:443 drive.usercontent.google.com tcp
US 8.8.8.8:53 97.201.58.216.in-addr.arpa udp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 98.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 84.65.42.20.in-addr.arpa udp

Files

C:\Users\Admin\Music\incinerations.lnk

MD5 ac051e71f303a480d785efc036757175
SHA1 b9b2bee5a1010bf1da07445f5057cedb10ce3c3f
SHA256 0d098999e5ba1f5a13789d6e30543e49f706bf1e9132e359604402ceaf0b4ef0
SHA512 ae8e0c734048434ae04ba59760051c191c8006b645909b1a522a780bbdff494005322a6c63b8300cc4c6cda85826ce54119cecb7644c3c9923afbbc5e26458f7

C:\Users\Admin\AppData\Local\Temp\nsvA0F4.tmp\System.dll

MD5 cf85183b87314359488b850f9e97a698
SHA1 6b6c790037eec7ebea4d05590359cb4473f19aea
SHA256 3b6a5cb2a3c091814fce297c04fb677f72732fb21615102c62a195fdc2e7dfac
SHA512 fe484b3fc89aeed3a6b71b90b90ea11a787697e56be3077154b6ddc2646850f6c38589ed422ff792e391638a80a778d33f22e891e76b5d65896c6fb4696a2c3b

memory/3032-429-0x00000000036E0000-0x0000000006539000-memory.dmp

memory/3032-430-0x00000000036E0000-0x0000000006539000-memory.dmp

memory/3032-431-0x0000000077BE1000-0x0000000077D01000-memory.dmp

memory/3032-432-0x0000000077BE1000-0x0000000077D01000-memory.dmp

memory/3032-433-0x0000000010004000-0x0000000010005000-memory.dmp

memory/3608-434-0x0000000000400000-0x0000000001654000-memory.dmp

memory/3032-435-0x00000000036E0000-0x0000000006539000-memory.dmp

memory/3608-436-0x0000000001660000-0x00000000044B9000-memory.dmp

memory/3608-449-0x0000000000400000-0x0000000001654000-memory.dmp

memory/3608-450-0x0000000000400000-0x0000000001654000-memory.dmp

memory/3608-451-0x0000000001660000-0x00000000044B9000-memory.dmp

memory/3608-452-0x0000000000400000-0x0000000001654000-memory.dmp