Malware Analysis Report

2024-12-06 03:21

Sample ID 241023-rx3zjsvepf
Target rMactation.exe
SHA256 d4403b301fd83b63921be53b6d3e9dfab987ff2aa133511b3b2e1a4dcc22cdc5
Tags
discovery guloader downloader
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

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: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

d4403b301fd83b63921be53b6d3e9dfab987ff2aa133511b3b2e1a4dcc22cdc5

Threat Level: Known bad

The file rMactation.exe 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 NtSetInformationThreadHideFromDebugger

Suspicious use of NtCreateThreadExHideFromDebugger

Suspicious use of SetThreadContext

Drops file in System32 directory

Drops file in Windows directory

Program crash

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Unsigned PE

NSIS installer

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-23 14:35

Signatures

Unsigned PE

Description Indicator Process Target
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: behavioral4

Detonation Overview

Submitted

2024-10-23 14:35

Reported

2024-10-23 14:37

Platform

win10v2004-20241007-en

Max time kernel

134s

Max time network

123s

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 5072 wrote to memory of 1792 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 5072 wrote to memory of 1792 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 5072 wrote to memory of 1792 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 404 -p 1792 -ip 1792

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1792 -s 612

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 150.171.28.10:443 g.bing.com tcp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 71.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 105.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 69.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.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 26.35.223.20.in-addr.arpa udp

Files

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-23 14:35

Reported

2024-10-23 14:37

Platform

win7-20240903-en

Max time kernel

119s

Max time network

122s

Command Line

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

Signatures

Guloader,Cloudeye

downloader guloader

Loads dropped DLL

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

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\oecus\svante.Eft C:\Users\Admin\AppData\Local\Temp\rMactation.exe N/A

Suspicious use of NtCreateThreadExHideFromDebugger

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

Suspicious use of NtSetInformationThreadHideFromDebugger

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1560 set thread context of 2908 N/A C:\Users\Admin\AppData\Local\Temp\rMactation.exe C:\Users\Admin\AppData\Local\Temp\rMactation.exe

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\resources\sankthansaftnerne\clodpoll.saf C:\Users\Admin\AppData\Local\Temp\rMactation.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\rMactation.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\rMactation.exe N/A

Suspicious behavior: MapViewOfSection

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

Processes

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

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

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

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

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 142.250.187.227:80 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 2.18.190.80:80 crl.microsoft.com tcp

Files

C:\Users\Admin\Desktop\peripheries.lnk

MD5 9182eccc252837c9fd3b4c40c6d04952
SHA1 074b83f5337e9994f77b97abd1de7dfdeb7a66a4
SHA256 b9640f0fe002ae34d6351dbe2158d1e43774215390963b9c8bf934804e042db2
SHA512 e02af208d7260a71f65e2a5190071d75758db05d0320d967abb726213d9a2a4cbd326ac76ec9a4fb454cc81e1383a677344646aa748b8a7e0f79ca5ca922df5e

C:\Users\Admin\Desktop\peripheries.lnk

MD5 839b5df1dd7fa31e53656b0fc0629d5e
SHA1 8ffb2a30b8e3ebf142db1b06936c25b63d00cb77
SHA256 d4f738ec4134cd24649a282e81dc46a56cd735d5df5fd438ac5171b43ea5ea85
SHA512 4bb278e6d1c33512f74a4e099d55a39dd65dd3f997736103e454b6ad580c7c980ed84996ad99945fedb72a8afb1c0bb4554bbb9e8d0808043068df7b7b3525dd

\Users\Admin\AppData\Local\Temp\nseFD25.tmp\System.dll

MD5 cf85183b87314359488b850f9e97a698
SHA1 6b6c790037eec7ebea4d05590359cb4473f19aea
SHA256 3b6a5cb2a3c091814fce297c04fb677f72732fb21615102c62a195fdc2e7dfac
SHA512 fe484b3fc89aeed3a6b71b90b90ea11a787697e56be3077154b6ddc2646850f6c38589ed422ff792e391638a80a778d33f22e891e76b5d65896c6fb4696a2c3b

memory/1560-24644-0x00000000036A0000-0x00000000060EC000-memory.dmp

memory/1560-24647-0x00000000777B0000-0x0000000077959000-memory.dmp

memory/1560-24646-0x00000000777B1000-0x00000000778B2000-memory.dmp

memory/1560-24645-0x00000000036A0000-0x00000000060EC000-memory.dmp

memory/1560-24649-0x00000000036A0000-0x00000000060EC000-memory.dmp

memory/2908-24648-0x0000000000400000-0x0000000001462000-memory.dmp

memory/2908-24650-0x00000000777B0000-0x0000000077959000-memory.dmp

memory/2908-24672-0x0000000000400000-0x0000000001462000-memory.dmp

memory/2908-24674-0x0000000000400000-0x0000000001462000-memory.dmp

memory/2908-24673-0x0000000000400000-0x0000000001462000-memory.dmp

memory/2908-24675-0x0000000000400000-0x0000000001462000-memory.dmp

memory/2908-24676-0x0000000000400000-0x0000000001462000-memory.dmp

memory/2908-24677-0x0000000000400000-0x0000000001462000-memory.dmp

memory/2908-24678-0x0000000000400000-0x0000000001462000-memory.dmp

memory/2908-24679-0x0000000000400000-0x0000000001462000-memory.dmp

memory/2908-24685-0x0000000000400000-0x0000000001462000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-23 14:35

Reported

2024-10-23 14:37

Platform

win10v2004-20241007-en

Max time kernel

147s

Max time network

151s

Command Line

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

Signatures

Guloader,Cloudeye

downloader guloader

Loads dropped DLL

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

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\oecus\svante.Eft C:\Users\Admin\AppData\Local\Temp\rMactation.exe N/A

Suspicious use of NtCreateThreadExHideFromDebugger

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

Suspicious use of NtSetInformationThreadHideFromDebugger

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3576 set thread context of 4988 N/A C:\Users\Admin\AppData\Local\Temp\rMactation.exe C:\Users\Admin\AppData\Local\Temp\rMactation.exe

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\resources\sankthansaftnerne\clodpoll.saf C:\Users\Admin\AppData\Local\Temp\rMactation.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\rMactation.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\rMactation.exe N/A

Suspicious behavior: MapViewOfSection

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

Processes

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

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

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 73.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 150.171.27.10:443 g.bing.com tcp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 73.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 69.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.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
US 8.8.8.8:53 238.16.217.172.in-addr.arpa udp
US 8.8.8.8:53 3.178.250.142.in-addr.arpa 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 97.201.58.216.in-addr.arpa udp
US 8.8.8.8:53 107.209.201.84.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

C:\Users\Admin\Desktop\peripheries.lnk

MD5 340c922cfdf66ba938df35d44e0d519e
SHA1 4801ec23cc47ff203737cd561c69d2685c4d00ac
SHA256 760ca995431e8e0133f98c703bcbbe98844ddb71b7cf4ed7a574d9fcf7e09816
SHA512 56d65fdff0b7a6104615baf3ac5e4843fc065c635bcc0f3f73d2d0c10bfc97ed71a70dddcd9bc9e0463cd44a9bdb055d64eefba23854ac2f8ed890b8e63ee125

C:\Users\Admin\Desktop\peripheries.lnk

MD5 38606ad7a47e1c03382e08ec494520d5
SHA1 38fb44e55c7c8957d5185892bfc621b48ee80085
SHA256 0eaa0ac47fdb40b515d8e833295390a7fcc61a9f8a1036bcebce9aec0ed13912
SHA512 8c3d8175c47b5c72a5435edfc9eafad258face2c168f6f589abb87dbd379733ec7a2d0c4f35eeea4bac758ce10438e69de6047beb8cb1ea6398c2f2c91b5fbda

C:\Users\Admin\AppData\Local\Temp\nsh9878.tmp\System.dll

MD5 cf85183b87314359488b850f9e97a698
SHA1 6b6c790037eec7ebea4d05590359cb4473f19aea
SHA256 3b6a5cb2a3c091814fce297c04fb677f72732fb21615102c62a195fdc2e7dfac
SHA512 fe484b3fc89aeed3a6b71b90b90ea11a787697e56be3077154b6ddc2646850f6c38589ed422ff792e391638a80a778d33f22e891e76b5d65896c6fb4696a2c3b

memory/3576-24644-0x00000000034C0000-0x0000000005F0C000-memory.dmp

memory/3576-24645-0x00000000034C0000-0x0000000005F0C000-memory.dmp

memory/3576-24646-0x0000000077991000-0x0000000077AB1000-memory.dmp

memory/3576-24647-0x0000000010004000-0x0000000010005000-memory.dmp

memory/4988-24648-0x0000000000400000-0x0000000001654000-memory.dmp

memory/3576-24649-0x00000000034C0000-0x0000000005F0C000-memory.dmp

memory/4988-24650-0x0000000001660000-0x00000000040AC000-memory.dmp

memory/4988-24663-0x0000000000400000-0x0000000001654000-memory.dmp

memory/4988-24664-0x0000000001660000-0x00000000040AC000-memory.dmp

memory/4988-24665-0x0000000000400000-0x0000000001654000-memory.dmp

memory/4988-24666-0x0000000000400000-0x0000000001654000-memory.dmp

memory/4988-24667-0x0000000000400000-0x0000000001654000-memory.dmp

memory/4988-24668-0x0000000000400000-0x0000000001654000-memory.dmp

memory/4988-24671-0x0000000000400000-0x0000000001654000-memory.dmp

memory/4988-24672-0x0000000001660000-0x00000000040AC000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-10-23 14:35

Reported

2024-10-23 14:37

Platform

win7-20240729-en

Max time kernel

16s

Max time network

17s

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 2580 -s 224

Network

N/A

Files

N/A