Malware Analysis Report

2024-12-07 22:31

Sample ID 240406-rxvceada83
Target e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118
SHA256 d660500c553676fcad1d6b2847022578ed20676190b5ed5687cd15d19e98e862
Tags
remcos remotehost rat
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: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

d660500c553676fcad1d6b2847022578ed20676190b5ed5687cd15d19e98e862

Threat Level: Known bad

The file e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

remcos remotehost rat

Remcos

Checks computer location settings

Uses the VBS compiler for execution

Suspicious use of SetThreadContext

Enumerates physical storage devices

Unsigned PE

Creates scheduled task(s)

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-06 14:34

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-06 14:34

Reported

2024-04-06 14:37

Platform

win10v2004-20240226-en

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe"

Signatures

Remcos

rat remcos

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe N/A

Uses the VBS compiler for execution

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2200 set thread context of 4836 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe

Enumerates physical storage devices

Creates scheduled task(s)

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2200 wrote to memory of 764 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 2200 wrote to memory of 764 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 2200 wrote to memory of 764 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 2200 wrote to memory of 4940 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2200 wrote to memory of 4940 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2200 wrote to memory of 4940 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2200 wrote to memory of 4836 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2200 wrote to memory of 4836 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2200 wrote to memory of 4836 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2200 wrote to memory of 4836 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2200 wrote to memory of 4836 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2200 wrote to memory of 4836 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2200 wrote to memory of 4836 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2200 wrote to memory of 4836 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2200 wrote to memory of 4836 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2200 wrote to memory of 4836 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2200 wrote to memory of 4836 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2200 wrote to memory of 4836 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe

Processes

C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe"

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\XzZiyvVk" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD3DA.tmp"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 247.211.222.173.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 20.231.121.79:80 tcp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 28.143.109.104.in-addr.arpa udp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
US 8.8.8.8:53 171.117.168.52.in-addr.arpa udp

Files

memory/2200-0-0x0000000000230000-0x0000000000336000-memory.dmp

memory/2200-1-0x0000000074E20000-0x00000000755D0000-memory.dmp

memory/2200-2-0x0000000005260000-0x0000000005804000-memory.dmp

memory/2200-3-0x0000000004D50000-0x0000000004DE2000-memory.dmp

memory/2200-4-0x0000000004DF0000-0x0000000004E8C000-memory.dmp

memory/2200-5-0x0000000004F80000-0x0000000004F90000-memory.dmp

memory/2200-6-0x0000000004CF0000-0x0000000004CFA000-memory.dmp

memory/2200-7-0x0000000005010000-0x0000000005028000-memory.dmp

memory/2200-8-0x0000000074E20000-0x00000000755D0000-memory.dmp

memory/2200-9-0x0000000004F80000-0x0000000004F90000-memory.dmp

memory/2200-10-0x0000000006710000-0x00000000067DE000-memory.dmp

memory/2200-11-0x0000000008D30000-0x0000000008DA8000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmpD3DA.tmp

MD5 7161c982c047cfcb57290560a0cabf9d
SHA1 c369dc5213ae30d1f5f7100a6fddd4cda453a9f3
SHA256 ca109913fff2b68f119f24281e2561a20ab7094ede05f2565cf4b595e960b1fc
SHA512 1d022fdc68c894b74d634ac4fd9e1a79f6f4e782a6fb2faf5470f30712fac186f9bf214dc8644d1d37f5e57407fa04c6cc8f96052b89be1f400f7e88cbbb2db6

memory/4836-18-0x0000000000400000-0x0000000000479000-memory.dmp

memory/4836-17-0x0000000000400000-0x0000000000479000-memory.dmp

memory/4836-20-0x0000000000400000-0x0000000000479000-memory.dmp

memory/4836-22-0x0000000000400000-0x0000000000479000-memory.dmp

memory/2200-21-0x0000000074E20000-0x00000000755D0000-memory.dmp

memory/4836-23-0x0000000000400000-0x0000000000479000-memory.dmp

memory/4836-24-0x0000000000400000-0x0000000000479000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-06 14:34

Reported

2024-04-06 14:37

Platform

win7-20240221-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe"

Signatures

Remcos

rat remcos

Uses the VBS compiler for execution

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2388 set thread context of 2588 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe

Enumerates physical storage devices

Creates scheduled task(s)

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2388 wrote to memory of 2652 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 2388 wrote to memory of 2652 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 2388 wrote to memory of 2652 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 2388 wrote to memory of 2652 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 2388 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2388 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2388 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2388 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2388 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2388 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2388 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2388 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2388 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2388 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2388 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2388 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
PID 2388 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe

Processes

C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\e2c06a71d3e93dbad9029c875221aa9d_JaffaCakes118.exe"

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\XzZiyvVk" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB635.tmp"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"

Network

Country Destination Domain Proto
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp
NL 45.137.22.101:5888 tcp

Files

memory/2388-0-0x0000000001130000-0x0000000001236000-memory.dmp

memory/2388-1-0x0000000074520000-0x0000000074C0E000-memory.dmp

memory/2388-2-0x00000000004D0000-0x0000000000510000-memory.dmp

memory/2388-3-0x0000000000480000-0x0000000000498000-memory.dmp

memory/2388-4-0x0000000074520000-0x0000000074C0E000-memory.dmp

memory/2388-5-0x00000000004D0000-0x0000000000510000-memory.dmp

memory/2388-6-0x0000000005970000-0x0000000005A3E000-memory.dmp

memory/2388-7-0x0000000004910000-0x0000000004988000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmpB635.tmp

MD5 b340f5278e7efde79f1681e0843f4ea3
SHA1 d324130888f17c99e3d39b82cd3d0599d48801e1
SHA256 8a8a97f94b4ceb11a3a84053d7c6bd1878d794f08102372843eebb3584e89227
SHA512 190f352b68d8330bce5ce38d349c60a134ff8a7ab5231afc95f0ae317f99e4aa701c025a0c9e184e15a07fd816a23611521a159ac666ea08c3e07c6a54fc417b

memory/2588-13-0x0000000000400000-0x0000000000479000-memory.dmp

memory/2588-15-0x0000000000400000-0x0000000000479000-memory.dmp

memory/2588-17-0x0000000000400000-0x0000000000479000-memory.dmp

memory/2588-18-0x0000000000400000-0x0000000000479000-memory.dmp

memory/2588-19-0x0000000000400000-0x0000000000479000-memory.dmp

memory/2588-20-0x0000000000400000-0x0000000000479000-memory.dmp

memory/2588-21-0x0000000000400000-0x0000000000479000-memory.dmp

memory/2588-22-0x0000000000400000-0x0000000000479000-memory.dmp

memory/2588-23-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

memory/2588-24-0x0000000000400000-0x0000000000479000-memory.dmp

memory/2388-27-0x0000000074520000-0x0000000074C0E000-memory.dmp

memory/2588-26-0x0000000000400000-0x0000000000479000-memory.dmp

memory/2588-28-0x0000000000400000-0x0000000000479000-memory.dmp

memory/2588-29-0x0000000000400000-0x0000000000479000-memory.dmp