Malware Analysis Report

2024-12-07 22:45

Sample ID 240514-yyweesec3v
Target 42e0c030f5d8813fecfa127988c1569f_JaffaCakes118
SHA256 5dff2df99ba4a0000f839a59356c24e7c24749b1e12640327b3ba4890e9ffc28
Tags
remcos persistence 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

5dff2df99ba4a0000f839a59356c24e7c24749b1e12640327b3ba4890e9ffc28

Threat Level: Known bad

The file 42e0c030f5d8813fecfa127988c1569f_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

remcos persistence rat

Remcos

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

Adds Run key to start application

Suspicious use of SetThreadContext

Enumerates physical storage devices

Unsigned PE

Suspicious use of SetWindowsHookEx

Suspicious use of UnmapMainImage

Runs ping.exe

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-14 20:12

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-14 20:12

Reported

2024-05-14 20:14

Platform

win10v2004-20240426-en

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\42e0c030f5d8813fecfa127988c1569f_JaffaCakes118.exe"

Signatures

Remcos

rat remcos

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\42e0c030f5d8813fecfa127988c1569f_JaffaCakes118.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wjhjnhtg = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microfiles2\\HDPeal.exe\"" C:\Users\Admin\AppData\Local\Temp\42e0c030f5d8813fecfa127988c1569f_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wjhjnhtg = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microfiles2\\HDPeal.exe\"" C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3232 set thread context of 4120 N/A C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe C:\Windows\SysWOW64\svchost.exe

Enumerates physical storage devices

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\PING.EXE N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 740 wrote to memory of 4456 N/A C:\Users\Admin\AppData\Local\Temp\42e0c030f5d8813fecfa127988c1569f_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 740 wrote to memory of 4456 N/A C:\Users\Admin\AppData\Local\Temp\42e0c030f5d8813fecfa127988c1569f_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 740 wrote to memory of 4456 N/A C:\Users\Admin\AppData\Local\Temp\42e0c030f5d8813fecfa127988c1569f_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 4456 wrote to memory of 3224 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 4456 wrote to memory of 3224 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 4456 wrote to memory of 3224 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 4456 wrote to memory of 3232 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe
PID 4456 wrote to memory of 3232 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe
PID 4456 wrote to memory of 3232 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe
PID 3232 wrote to memory of 4120 N/A C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe C:\Windows\SysWOW64\svchost.exe
PID 3232 wrote to memory of 4120 N/A C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe C:\Windows\SysWOW64\svchost.exe
PID 3232 wrote to memory of 4120 N/A C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe C:\Windows\SysWOW64\svchost.exe
PID 3232 wrote to memory of 4120 N/A C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe C:\Windows\SysWOW64\svchost.exe
PID 3232 wrote to memory of 4120 N/A C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe C:\Windows\SysWOW64\svchost.exe
PID 3232 wrote to memory of 4120 N/A C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe C:\Windows\SysWOW64\svchost.exe
PID 3232 wrote to memory of 4120 N/A C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe C:\Windows\SysWOW64\svchost.exe
PID 3232 wrote to memory of 4120 N/A C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe C:\Windows\SysWOW64\svchost.exe
PID 3232 wrote to memory of 4120 N/A C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe C:\Windows\SysWOW64\svchost.exe

Processes

C:\Users\Admin\AppData\Local\Temp\42e0c030f5d8813fecfa127988c1569f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\42e0c030f5d8813fecfa127988c1569f_JaffaCakes118.exe"

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\install.bat" "

C:\Windows\SysWOW64\PING.EXE

PING 127.0.0.1 -n 2

C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe

"C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe"

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 16.53.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 civita2.no-ip.biz udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 35.166.122.92.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.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
NL 23.62.61.56:443 www.bing.com tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 56.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 93.65.42.20.in-addr.arpa udp

Files

memory/740-3-0x0000000000400000-0x0000000000419000-memory.dmp

memory/740-7-0x0000000000400000-0x0000000000444000-memory.dmp

memory/740-10-0x0000000000400000-0x0000000000419000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\install.bat

MD5 9e63d0d86376e45cfd856537efb86171
SHA1 566c68ff9c1f2fa5a75207258b1092447e81fcce
SHA256 6f6f2f859525c5c8668364d9feb6da278eee5ed59580a5184e8dda65832cce7d
SHA512 d5359f1a3701a010c3fb90faac3da226881c6777dd7e1bfaf475cef0f18f6dfab9f317ac3431daa77869b2872f5a5c9a16cad10bc51a5d127219a095df7ccb98

C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe

MD5 42e0c030f5d8813fecfa127988c1569f
SHA1 288584bcf0e299568a953c7828f4989830adbe1b
SHA256 5dff2df99ba4a0000f839a59356c24e7c24749b1e12640327b3ba4890e9ffc28
SHA512 9189f63c8e14232938a32aeb0fb36105a20c177b96ac56010daac59719b8d6109d69c50e8cbf04d4d28bad0f161a8564b5b39eb18694f9dcaf6c9e34f31fb0fc

memory/3232-19-0x0000000000400000-0x0000000000419000-memory.dmp

memory/3232-22-0x0000000000400000-0x0000000000419000-memory.dmp

memory/3232-24-0x0000000000400000-0x0000000000444000-memory.dmp

memory/3232-23-0x0000000000400000-0x0000000000444000-memory.dmp

memory/4120-25-0x0000000000400000-0x0000000000419000-memory.dmp

memory/4120-28-0x0000000000400000-0x0000000000419000-memory.dmp

memory/3232-32-0x0000000000400000-0x0000000000444000-memory.dmp

memory/3232-33-0x0000000000400000-0x0000000000444000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-14 20:12

Reported

2024-05-14 20:14

Platform

win7-20240220-en

Max time kernel

148s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\42e0c030f5d8813fecfa127988c1569f_JaffaCakes118.exe"

Signatures

Remcos

rat remcos

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe N/A

Loads dropped DLL

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Run\wjhjnhtg = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microfiles2\\HDPeal.exe\"" C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Run\wjhjnhtg = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microfiles2\\HDPeal.exe\"" C:\Users\Admin\AppData\Local\Temp\42e0c030f5d8813fecfa127988c1569f_JaffaCakes118.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2668 set thread context of 2648 N/A C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe C:\Windows\SysWOW64\svchost.exe

Enumerates physical storage devices

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\PING.EXE N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1740 wrote to memory of 1324 N/A C:\Users\Admin\AppData\Local\Temp\42e0c030f5d8813fecfa127988c1569f_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1740 wrote to memory of 1324 N/A C:\Users\Admin\AppData\Local\Temp\42e0c030f5d8813fecfa127988c1569f_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1740 wrote to memory of 1324 N/A C:\Users\Admin\AppData\Local\Temp\42e0c030f5d8813fecfa127988c1569f_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1740 wrote to memory of 1324 N/A C:\Users\Admin\AppData\Local\Temp\42e0c030f5d8813fecfa127988c1569f_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1740 wrote to memory of 1324 N/A C:\Users\Admin\AppData\Local\Temp\42e0c030f5d8813fecfa127988c1569f_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1740 wrote to memory of 1324 N/A C:\Users\Admin\AppData\Local\Temp\42e0c030f5d8813fecfa127988c1569f_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1740 wrote to memory of 1324 N/A C:\Users\Admin\AppData\Local\Temp\42e0c030f5d8813fecfa127988c1569f_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1324 wrote to memory of 2520 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 1324 wrote to memory of 2520 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 1324 wrote to memory of 2520 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 1324 wrote to memory of 2520 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 1324 wrote to memory of 2668 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe
PID 1324 wrote to memory of 2668 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe
PID 1324 wrote to memory of 2668 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe
PID 1324 wrote to memory of 2668 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe
PID 2668 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe C:\Windows\SysWOW64\svchost.exe
PID 2668 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe C:\Windows\SysWOW64\svchost.exe

Processes

C:\Users\Admin\AppData\Local\Temp\42e0c030f5d8813fecfa127988c1569f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\42e0c030f5d8813fecfa127988c1569f_JaffaCakes118.exe"

C:\Windows\SysWOW64\cmd.exe

cmd /c ""C:\Users\Admin\AppData\Local\Temp\install.bat" "

C:\Windows\SysWOW64\PING.EXE

PING 127.0.0.1 -n 2

C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe

"C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe"

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 civita2.no-ip.biz udp

Files

memory/1740-2-0x0000000000400000-0x0000000000419000-memory.dmp

memory/1740-6-0x0000000000400000-0x0000000000419000-memory.dmp

memory/1740-7-0x0000000072940000-0x0000000072A60000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\install.bat

MD5 9e63d0d86376e45cfd856537efb86171
SHA1 566c68ff9c1f2fa5a75207258b1092447e81fcce
SHA256 6f6f2f859525c5c8668364d9feb6da278eee5ed59580a5184e8dda65832cce7d
SHA512 d5359f1a3701a010c3fb90faac3da226881c6777dd7e1bfaf475cef0f18f6dfab9f317ac3431daa77869b2872f5a5c9a16cad10bc51a5d127219a095df7ccb98

memory/1740-15-0x0000000000400000-0x0000000000419000-memory.dmp

memory/1740-16-0x0000000072940000-0x0000000072A60000-memory.dmp

\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe

MD5 42e0c030f5d8813fecfa127988c1569f
SHA1 288584bcf0e299568a953c7828f4989830adbe1b
SHA256 5dff2df99ba4a0000f839a59356c24e7c24749b1e12640327b3ba4890e9ffc28
SHA512 9189f63c8e14232938a32aeb0fb36105a20c177b96ac56010daac59719b8d6109d69c50e8cbf04d4d28bad0f161a8564b5b39eb18694f9dcaf6c9e34f31fb0fc

memory/2668-25-0x0000000000400000-0x0000000000419000-memory.dmp

memory/2668-24-0x0000000000400000-0x0000000000419000-memory.dmp

memory/2668-28-0x0000000000400000-0x0000000000419000-memory.dmp

memory/2648-29-0x0000000000400000-0x0000000000419000-memory.dmp

memory/2648-45-0x0000000000400000-0x0000000000419000-memory.dmp

memory/2668-43-0x0000000072940000-0x0000000072A93000-memory.dmp

memory/2648-41-0x0000000000400000-0x0000000000419000-memory.dmp

memory/2648-39-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2648-38-0x0000000000400000-0x0000000000419000-memory.dmp

memory/2648-35-0x0000000000400000-0x0000000000419000-memory.dmp

memory/2648-33-0x0000000000400000-0x0000000000419000-memory.dmp

memory/2648-31-0x0000000000400000-0x0000000000419000-memory.dmp