Malware Analysis Report

2025-01-22 16:27

Sample ID 240930-aad88s1dkh
Target ff89d46c9ca5288f68e5a3561edd132e_JaffaCakes118
SHA256 027a02db5122cbb563ad5a46d3119076de647813a8fdc78fd1391c5c1b1342b9
Tags
isfb gozi banker discovery persistence trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

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

027a02db5122cbb563ad5a46d3119076de647813a8fdc78fd1391c5c1b1342b9

Threat Level: Known bad

The file ff89d46c9ca5288f68e5a3561edd132e_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

isfb gozi banker discovery persistence trojan

Gozi family

Gozi

Blocklisted process makes network request

Loads dropped DLL

Enumerates connected drives

Adds Run key to start application

Drops file in System32 directory

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: RenamesItself

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-30 00:00

Signatures

Gozi family

gozi

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-30 00:00

Reported

2024-09-30 00:02

Platform

win7-20240903-en

Max time kernel

149s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ff89d46c9ca5288f68e5a3561edd132e_JaffaCakes118.exe"

Signatures

Gozi

banker trojan gozi

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\Rundll32.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\system = "C:\\Windows\\system32\\system.exe" C:\Windows\SysWOW64\Rundll32.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\D: C:\Windows\SysWOW64\Rundll32.exe N/A
File opened (read-only) \??\F: C:\Windows\SysWOW64\Rundll32.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\kfhacctb.dll C:\Users\Admin\AppData\Local\Temp\ff89d46c9ca5288f68e5a3561edd132e_JaffaCakes118.exe N/A
File created C:\Windows\SysWOW64\uvghdctb.dll C:\Users\Admin\AppData\Local\Temp\ff89d46c9ca5288f68e5a3561edd132e_JaffaCakes118.exe N/A

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\ff89d46c9ca5288f68e5a3561edd132e_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\Rundll32.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\Rundll32.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\Rundll32.exe N/A

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ff89d46c9ca5288f68e5a3561edd132e_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2392 wrote to memory of 2652 N/A C:\Users\Admin\AppData\Local\Temp\ff89d46c9ca5288f68e5a3561edd132e_JaffaCakes118.exe C:\Windows\SysWOW64\Rundll32.exe
PID 2392 wrote to memory of 2652 N/A C:\Users\Admin\AppData\Local\Temp\ff89d46c9ca5288f68e5a3561edd132e_JaffaCakes118.exe C:\Windows\SysWOW64\Rundll32.exe
PID 2392 wrote to memory of 2652 N/A C:\Users\Admin\AppData\Local\Temp\ff89d46c9ca5288f68e5a3561edd132e_JaffaCakes118.exe C:\Windows\SysWOW64\Rundll32.exe
PID 2392 wrote to memory of 2652 N/A C:\Users\Admin\AppData\Local\Temp\ff89d46c9ca5288f68e5a3561edd132e_JaffaCakes118.exe C:\Windows\SysWOW64\Rundll32.exe
PID 2392 wrote to memory of 2652 N/A C:\Users\Admin\AppData\Local\Temp\ff89d46c9ca5288f68e5a3561edd132e_JaffaCakes118.exe C:\Windows\SysWOW64\Rundll32.exe
PID 2392 wrote to memory of 2652 N/A C:\Users\Admin\AppData\Local\Temp\ff89d46c9ca5288f68e5a3561edd132e_JaffaCakes118.exe C:\Windows\SysWOW64\Rundll32.exe
PID 2392 wrote to memory of 2652 N/A C:\Users\Admin\AppData\Local\Temp\ff89d46c9ca5288f68e5a3561edd132e_JaffaCakes118.exe C:\Windows\SysWOW64\Rundll32.exe
PID 2392 wrote to memory of 2816 N/A C:\Users\Admin\AppData\Local\Temp\ff89d46c9ca5288f68e5a3561edd132e_JaffaCakes118.exe C:\Windows\SysWOW64\Rundll32.exe
PID 2392 wrote to memory of 2816 N/A C:\Users\Admin\AppData\Local\Temp\ff89d46c9ca5288f68e5a3561edd132e_JaffaCakes118.exe C:\Windows\SysWOW64\Rundll32.exe
PID 2392 wrote to memory of 2816 N/A C:\Users\Admin\AppData\Local\Temp\ff89d46c9ca5288f68e5a3561edd132e_JaffaCakes118.exe C:\Windows\SysWOW64\Rundll32.exe
PID 2392 wrote to memory of 2816 N/A C:\Users\Admin\AppData\Local\Temp\ff89d46c9ca5288f68e5a3561edd132e_JaffaCakes118.exe C:\Windows\SysWOW64\Rundll32.exe
PID 2392 wrote to memory of 2816 N/A C:\Users\Admin\AppData\Local\Temp\ff89d46c9ca5288f68e5a3561edd132e_JaffaCakes118.exe C:\Windows\SysWOW64\Rundll32.exe
PID 2392 wrote to memory of 2816 N/A C:\Users\Admin\AppData\Local\Temp\ff89d46c9ca5288f68e5a3561edd132e_JaffaCakes118.exe C:\Windows\SysWOW64\Rundll32.exe
PID 2392 wrote to memory of 2816 N/A C:\Users\Admin\AppData\Local\Temp\ff89d46c9ca5288f68e5a3561edd132e_JaffaCakes118.exe C:\Windows\SysWOW64\Rundll32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\ff89d46c9ca5288f68e5a3561edd132e_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\ff89d46c9ca5288f68e5a3561edd132e_JaffaCakes118.exe"

C:\Windows\SysWOW64\Rundll32.exe

Rundll32 C:\Windows\system32\kfhacctb.dll Exbcute

C:\Windows\SysWOW64\Rundll32.exe

Rundll32 C:\Windows\system32\uvghdctb.dll Exbcute

Network

Country Destination Domain Proto
US 8.8.8.8:53 tre05.u2h6n.com udp
FI 193.166.255.171:8080 tre05.u2h6n.com tcp

Files

\Windows\SysWOW64\kfhacctb.dll

MD5 e1cbc5a93e20dc8db5c86a469d09937f
SHA1 ce6c5581b4e367629607e3f61d5dd53438918c19
SHA256 5414f6ab220948f65ab1c36e8d446a0fd5886ae96abb8851351c76761f6bcb64
SHA512 2302b7f3e68de67c20e31a4b19b56d79ae12ebae30e3542bceca240edf000b0dd83c462374813dcc4f6c13f0c0c24c523e8036eb5ccf479b6e4d352f32a69852

\Windows\SysWOW64\uvghdctb.dll

MD5 5aacd71df1c12d33d967e7e518784404
SHA1 8a58f8fbd2bbae1f47c8aeff9e28a5183012d30c
SHA256 e197b5fc983c52b92c16eba5cee411feb7c0b2e69b2a505d8fff4e0d5e4fdcf3
SHA512 d432feff5099b17d5c39975b9a3fca2335e318159e7a80d0cafa1ed3cdfe0869a8cbf66ea0d7770bbff976af1dc7c7483b0407fa7b34aaa751cd04e1e3537040

\Users\Admin\AppData\Local\Temp\3A23.tmp

MD5 b5eb5bd3066959611e1f7a80fd6cc172
SHA1 6fb1532059212c840737b3f923a9c0b152c0887a
SHA256 1ffb68a66f28f604adcae9c135f8dcf301316ab7fda8ebd294583c56dd26f7cc
SHA512 6c0743e0ff4922e859ba66b68040ab994dbae33e80c63ce8c993ad31a0c7aad6c6467484da1550063214953cd641dbf597438dd0c02f24164505d88ca80ea1b6

memory/2392-15-0x00000000003C0000-0x00000000003E7000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-30 00:00

Reported

2024-09-30 00:02

Platform

win10v2004-20240802-en

Max time kernel

150s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ff89d46c9ca5288f68e5a3561edd132e_JaffaCakes118.exe"

Signatures

Gozi

banker trojan gozi

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\Rundll32.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\Rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\Rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\Rundll32.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\system = "C:\\Windows\\system32\\system.exe" C:\Windows\SysWOW64\Rundll32.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\D: C:\Windows\SysWOW64\Rundll32.exe N/A
File opened (read-only) \??\F: C:\Windows\SysWOW64\Rundll32.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\mppimgaa.dll C:\Users\Admin\AppData\Local\Temp\ff89d46c9ca5288f68e5a3561edd132e_JaffaCakes118.exe N/A
File created C:\Windows\SysWOW64\ldopngaa.dll C:\Users\Admin\AppData\Local\Temp\ff89d46c9ca5288f68e5a3561edd132e_JaffaCakes118.exe N/A

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\ff89d46c9ca5288f68e5a3561edd132e_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\Rundll32.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\Rundll32.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\Rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\Rundll32.exe N/A

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ff89d46c9ca5288f68e5a3561edd132e_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\ff89d46c9ca5288f68e5a3561edd132e_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\ff89d46c9ca5288f68e5a3561edd132e_JaffaCakes118.exe"

C:\Windows\SysWOW64\Rundll32.exe

Rundll32 C:\Windows\system32\mppimgaa.dll Exbcute

C:\Windows\SysWOW64\Rundll32.exe

Rundll32 C:\Windows\system32\ldopngaa.dll Exbcute

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 tre05.u2h6n.com udp
FI 193.166.255.171:8080 tre05.u2h6n.com tcp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp

Files

C:\Windows\SysWOW64\mppimgaa.dll

MD5 e1cbc5a93e20dc8db5c86a469d09937f
SHA1 ce6c5581b4e367629607e3f61d5dd53438918c19
SHA256 5414f6ab220948f65ab1c36e8d446a0fd5886ae96abb8851351c76761f6bcb64
SHA512 2302b7f3e68de67c20e31a4b19b56d79ae12ebae30e3542bceca240edf000b0dd83c462374813dcc4f6c13f0c0c24c523e8036eb5ccf479b6e4d352f32a69852

C:\Windows\SysWOW64\ldopngaa.dll

MD5 5aacd71df1c12d33d967e7e518784404
SHA1 8a58f8fbd2bbae1f47c8aeff9e28a5183012d30c
SHA256 e197b5fc983c52b92c16eba5cee411feb7c0b2e69b2a505d8fff4e0d5e4fdcf3
SHA512 d432feff5099b17d5c39975b9a3fca2335e318159e7a80d0cafa1ed3cdfe0869a8cbf66ea0d7770bbff976af1dc7c7483b0407fa7b34aaa751cd04e1e3537040

C:\Users\Admin\AppData\Local\Temp\81E2.tmp

MD5 6c7cdd25c2cb0073306eb22aebfc663f
SHA1 a1eba8ab49272b9852fe6a543677e8af36271248
SHA256 58280e3572333f97a7cf9f33e8d31dc26a98b6535965ebd0bde82249fc9bf705
SHA512 17344e07b9e9b2cd6ae4237d7f310732462f9cbb8656883607d7a1a4090e869265f92a6da1718dee50b1375b91583de60c6bd9e7e8db6b6e45e33f4b894365d6

memory/1532-10-0x0000000000BA0000-0x0000000000BC7000-memory.dmp