Malware Analysis Report

2024-10-19 01:53

Sample ID 240416-dbjf5aff38
Target f284271435132b9487ddf8dd41992578_JaffaCakes118
SHA256 8a19788e6391d24385ece1dc77bb1a3f381bfd951faa17ce3925592842d19986
Tags
tofsee evasion persistence trojan
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

8a19788e6391d24385ece1dc77bb1a3f381bfd951faa17ce3925592842d19986

Threat Level: Known bad

The file f284271435132b9487ddf8dd41992578_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

tofsee evasion persistence trojan

Tofsee

Creates new service(s)

Modifies Windows Firewall

Sets service image path in registry

Checks computer location settings

Deletes itself

Executes dropped EXE

Suspicious use of SetThreadContext

Launches sc.exe

Enumerates physical storage devices

Unsigned PE

Program crash

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-16 02:49

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-16 02:49

Reported

2024-04-16 02:52

Platform

win10v2004-20240412-en

Max time kernel

145s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe"

Signatures

Tofsee

trojan tofsee

Creates new service(s)

persistence

Modifies Windows Firewall

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

Sets service image path in registry

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\vsprttnt\ImagePath = "C:\\Windows\\SysWOW64\\vsprttnt\\agrcujdp.exe" C:\Windows\SysWOW64\svchost.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe N/A

Deletes itself

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

Executes dropped EXE

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1952 set thread context of 976 N/A C:\Windows\SysWOW64\vsprttnt\agrcujdp.exe C:\Windows\SysWOW64\svchost.exe

Launches sc.exe

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

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4992 wrote to memory of 3860 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 4992 wrote to memory of 3860 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 4992 wrote to memory of 3860 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 4992 wrote to memory of 3540 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 4992 wrote to memory of 3540 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 4992 wrote to memory of 3540 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 4992 wrote to memory of 1508 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\sc.exe
PID 4992 wrote to memory of 1508 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\sc.exe
PID 4992 wrote to memory of 1508 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\sc.exe
PID 4992 wrote to memory of 4924 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\sc.exe
PID 4992 wrote to memory of 4924 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\sc.exe
PID 4992 wrote to memory of 4924 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\sc.exe
PID 4992 wrote to memory of 4856 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\sc.exe
PID 4992 wrote to memory of 4856 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\sc.exe
PID 4992 wrote to memory of 4856 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\sc.exe
PID 4992 wrote to memory of 2656 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\netsh.exe
PID 4992 wrote to memory of 2656 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\netsh.exe
PID 4992 wrote to memory of 2656 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\netsh.exe
PID 1952 wrote to memory of 976 N/A C:\Windows\SysWOW64\vsprttnt\agrcujdp.exe C:\Windows\SysWOW64\svchost.exe
PID 1952 wrote to memory of 976 N/A C:\Windows\SysWOW64\vsprttnt\agrcujdp.exe C:\Windows\SysWOW64\svchost.exe
PID 1952 wrote to memory of 976 N/A C:\Windows\SysWOW64\vsprttnt\agrcujdp.exe C:\Windows\SysWOW64\svchost.exe
PID 1952 wrote to memory of 976 N/A C:\Windows\SysWOW64\vsprttnt\agrcujdp.exe C:\Windows\SysWOW64\svchost.exe
PID 1952 wrote to memory of 976 N/A C:\Windows\SysWOW64\vsprttnt\agrcujdp.exe C:\Windows\SysWOW64\svchost.exe

Processes

C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vsprttnt\

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\agrcujdp.exe" C:\Windows\SysWOW64\vsprttnt\

C:\Windows\SysWOW64\sc.exe

"C:\Windows\System32\sc.exe" create vsprttnt binPath= "C:\Windows\SysWOW64\vsprttnt\agrcujdp.exe /d\"C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"

C:\Windows\SysWOW64\sc.exe

"C:\Windows\System32\sc.exe" description vsprttnt "wifi internet conection"

C:\Windows\SysWOW64\sc.exe

"C:\Windows\System32\sc.exe" start vsprttnt

C:\Windows\SysWOW64\vsprttnt\agrcujdp.exe

C:\Windows\SysWOW64\vsprttnt\agrcujdp.exe /d"C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe"

C:\Windows\SysWOW64\netsh.exe

"C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 4992 -ip 4992

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4992 -s 1400

C:\Windows\SysWOW64\svchost.exe

svchost.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 1952 -ip 1952

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1952 -s 520

Network

Country Destination Domain Proto
US 8.8.8.8:53 20.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 21.114.53.23.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 microsoft.com udp
US 20.112.250.133:80 microsoft.com tcp
US 8.8.8.8:53 microsoft.com udp
US 8.8.8.8:53 microsoft-com.mail.protection.outlook.com udp
US 52.101.8.49:25 microsoft-com.mail.protection.outlook.com tcp
US 8.8.8.8:53 133.250.112.20.in-addr.arpa udp
HK 43.231.4.6:443 tcp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 yahoo.com udp
US 8.8.8.8:53 mta7.am0.yahoodns.net udp
US 98.136.96.76:25 mta7.am0.yahoodns.net tcp
US 8.8.8.8:53 google.com udp
US 8.8.8.8:53 smtp.google.com udp
NL 173.194.79.27:25 smtp.google.com tcp
HK 43.231.4.6:443 tcp
US 8.8.8.8:53 mail.ru udp
US 8.8.8.8:53 mxs.mail.ru udp
RU 94.100.180.31:25 mxs.mail.ru tcp
HK 43.231.4.6:443 tcp

Files

memory/4992-1-0x0000000000C40000-0x0000000000D40000-memory.dmp

memory/4992-2-0x0000000000B50000-0x0000000000B63000-memory.dmp

memory/4992-4-0x0000000000400000-0x00000000008EB000-memory.dmp

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

MD5 b63e43c00bfa322a2382ffc8be38c138
SHA1 62d08102955f80b2f5c626e11d56fe3ef4e2a94c
SHA256 dbedfb2517d288d7f75ce69269e14a216885e86c4b3edf76288a9c23d45a1a0b
SHA512 68053ef8c0a57f2cbad8a65a61a3f3ffda641c79d0b8e476b933d23dd785362a978f1172ce62d2f05e41d362a2465b15c1e7e19463edd83dc1274ccc9e368d88

memory/4992-7-0x0000000000400000-0x00000000008EB000-memory.dmp

memory/4992-8-0x0000000000B50000-0x0000000000B63000-memory.dmp

memory/1952-10-0x0000000000B50000-0x0000000000C50000-memory.dmp

memory/976-12-0x0000000000CA0000-0x0000000000CB5000-memory.dmp

memory/1952-11-0x0000000000400000-0x00000000008EB000-memory.dmp

memory/976-15-0x0000000000CA0000-0x0000000000CB5000-memory.dmp

memory/1952-16-0x0000000000400000-0x00000000008EB000-memory.dmp

memory/976-17-0x0000000000CA0000-0x0000000000CB5000-memory.dmp

memory/976-18-0x0000000000CA0000-0x0000000000CB5000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-16 02:49

Reported

2024-04-16 02:52

Platform

win7-20240221-en

Max time kernel

149s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe"

Signatures

Tofsee

trojan tofsee

Creates new service(s)

persistence

Modifies Windows Firewall

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

Executes dropped EXE

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

Launches sc.exe

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

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1372 wrote to memory of 2080 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1372 wrote to memory of 2080 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1372 wrote to memory of 2080 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1372 wrote to memory of 2080 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1372 wrote to memory of 2968 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1372 wrote to memory of 2968 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1372 wrote to memory of 2968 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1372 wrote to memory of 2968 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1372 wrote to memory of 2964 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\sc.exe
PID 1372 wrote to memory of 2964 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\sc.exe
PID 1372 wrote to memory of 2964 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\sc.exe
PID 1372 wrote to memory of 2964 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\sc.exe
PID 1372 wrote to memory of 2708 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\sc.exe
PID 1372 wrote to memory of 2708 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\sc.exe
PID 1372 wrote to memory of 2708 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\sc.exe
PID 1372 wrote to memory of 2708 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\sc.exe
PID 1372 wrote to memory of 2820 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\sc.exe
PID 1372 wrote to memory of 2820 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\sc.exe
PID 1372 wrote to memory of 2820 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\sc.exe
PID 1372 wrote to memory of 2820 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\sc.exe
PID 1372 wrote to memory of 2572 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\netsh.exe
PID 1372 wrote to memory of 2572 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\netsh.exe
PID 1372 wrote to memory of 2572 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\netsh.exe
PID 1372 wrote to memory of 2572 N/A C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe C:\Windows\SysWOW64\netsh.exe
PID 2632 wrote to memory of 2540 N/A C:\Windows\SysWOW64\ffjnhedd\irgbnmtd.exe C:\Windows\SysWOW64\svchost.exe
PID 2632 wrote to memory of 2540 N/A C:\Windows\SysWOW64\ffjnhedd\irgbnmtd.exe C:\Windows\SysWOW64\svchost.exe
PID 2632 wrote to memory of 2540 N/A C:\Windows\SysWOW64\ffjnhedd\irgbnmtd.exe C:\Windows\SysWOW64\svchost.exe
PID 2632 wrote to memory of 2540 N/A C:\Windows\SysWOW64\ffjnhedd\irgbnmtd.exe C:\Windows\SysWOW64\svchost.exe
PID 2632 wrote to memory of 2540 N/A C:\Windows\SysWOW64\ffjnhedd\irgbnmtd.exe C:\Windows\SysWOW64\svchost.exe

Processes

C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ffjnhedd\

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\irgbnmtd.exe" C:\Windows\SysWOW64\ffjnhedd\

C:\Windows\SysWOW64\sc.exe

"C:\Windows\System32\sc.exe" create ffjnhedd binPath= "C:\Windows\SysWOW64\ffjnhedd\irgbnmtd.exe /d\"C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"

C:\Windows\SysWOW64\sc.exe

"C:\Windows\System32\sc.exe" description ffjnhedd "wifi internet conection"

C:\Windows\SysWOW64\sc.exe

"C:\Windows\System32\sc.exe" start ffjnhedd

C:\Windows\SysWOW64\ffjnhedd\irgbnmtd.exe

C:\Windows\SysWOW64\ffjnhedd\irgbnmtd.exe /d"C:\Users\Admin\AppData\Local\Temp\f284271435132b9487ddf8dd41992578_JaffaCakes118.exe"

C:\Windows\SysWOW64\netsh.exe

"C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul

C:\Windows\SysWOW64\svchost.exe

svchost.exe

Network

N/A

Files

memory/1372-1-0x0000000000290000-0x0000000000390000-memory.dmp

memory/1372-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

memory/1372-4-0x0000000000400000-0x00000000008EB000-memory.dmp

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

MD5 c047fe02bef3fd5ba51741364ccf71d9
SHA1 1e570930debfac78bcf118e086ff131e5eb04d1b
SHA256 b12e71cc91c1e56258ec1d8ee8b3ed4014a47eb79cde576f761b88744115ce22
SHA512 44283d58db57d80e117bc2ee76197d8641bb11be4d10de7199047bbe0f1304076aac52aa67a7f64696e1c81eedbe163341a6bec3f42c98379ecacddbe1236a1e

memory/1372-7-0x0000000000400000-0x00000000008EB000-memory.dmp

memory/1372-8-0x00000000001C0000-0x00000000001D3000-memory.dmp

memory/2632-10-0x0000000000990000-0x0000000000A90000-memory.dmp

memory/2632-11-0x0000000000400000-0x00000000008EB000-memory.dmp

memory/2540-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2540-12-0x00000000000C0000-0x00000000000D5000-memory.dmp

memory/2632-15-0x0000000000400000-0x00000000008EB000-memory.dmp

memory/2632-17-0x0000000000990000-0x0000000000A90000-memory.dmp