Malware Analysis Report

2025-01-03 05:44

Sample ID 240729-rvrthaserk
Target 4c2975e4451b724c53c291c53854daeb_JaffaCakes118
SHA256 df7d9ccf853b228de44cdd2bf4dab0f0c753797b36a19377e1c367b57f1b20da
Tags
emotet epoch1 banker discovery 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

df7d9ccf853b228de44cdd2bf4dab0f0c753797b36a19377e1c367b57f1b20da

Threat Level: Known bad

The file 4c2975e4451b724c53c291c53854daeb_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

emotet epoch1 banker discovery trojan

Emotet

Emotet payload

Executes dropped EXE

Drops file in System32 directory

System Location Discovery: System Language Discovery

Unsigned PE

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious behavior: RenamesItself

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-07-29 14:31

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-29 14:31

Reported

2024-07-29 22:00

Platform

win7-20240729-en

Max time kernel

144s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4c2975e4451b724c53c291c53854daeb_JaffaCakes118.exe"

Signatures

Emotet

trojan banker emotet

Emotet payload

trojan banker
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\mfcm120u\msacm32.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\mfcm120u\msacm32.exe C:\Users\Admin\AppData\Local\Temp\4c2975e4451b724c53c291c53854daeb_JaffaCakes118.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:\Windows\SysWOW64\mfcm120u\msacm32.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\4c2975e4451b724c53c291c53854daeb_JaffaCakes118.exe N/A

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\4c2975e4451b724c53c291c53854daeb_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4c2975e4451b724c53c291c53854daeb_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\4c2975e4451b724c53c291c53854daeb_JaffaCakes118.exe"

C:\Windows\SysWOW64\mfcm120u\msacm32.exe

"C:\Windows\SysWOW64\mfcm120u\msacm32.exe"

Network

Country Destination Domain Proto
US 128.92.203.42:80 tcp
US 128.92.203.42:80 tcp
FR 37.187.161.206:8080 tcp
FR 37.187.161.206:8080 tcp
TH 202.29.239.162:443 tcp
TH 202.29.239.162:443 tcp
RU 80.87.201.221:7080 tcp

Files

memory/2716-4-0x0000000000030000-0x0000000000040000-memory.dmp

memory/2716-0-0x0000000000230000-0x0000000000242000-memory.dmp

memory/2716-7-0x0000000000020000-0x000000000002F000-memory.dmp

C:\Windows\SysWOW64\mfcm120u\msacm32.exe

MD5 4c2975e4451b724c53c291c53854daeb
SHA1 3c4a8ea04eeb4ff56b2d4b9c5e36a355a56fee85
SHA256 df7d9ccf853b228de44cdd2bf4dab0f0c753797b36a19377e1c367b57f1b20da
SHA512 8a979a4a6c94636d29e8203eae0b61f893fcbaf6490e8eea496b7705820cc2c961555472508a02396a4e8dd5bee8171ffa44318a1cda37a90c1d8c63cb6c331f

memory/2716-8-0x0000000000400000-0x000000000041C000-memory.dmp

memory/2744-10-0x0000000000330000-0x0000000000342000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-29 14:31

Reported

2024-07-29 21:54

Platform

win10v2004-20240709-en

Max time kernel

137s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4c2975e4451b724c53c291c53854daeb_JaffaCakes118.exe"

Signatures

Emotet

trojan banker emotet

Emotet payload

trojan banker
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A 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\4c2975e4451b724c53c291c53854daeb_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4c2975e4451b724c53c291c53854daeb_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\4c2975e4451b724c53c291c53854daeb_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 25.140.123.92.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 128.92.203.42:80 tcp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
FR 37.187.161.206:8080 tcp
TH 202.29.239.162:443 tcp
RU 80.87.201.221:7080 tcp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
AR 190.188.245.242:80 tcp
US 12.163.208.58:80 tcp

Files

memory/5012-7-0x0000000000440000-0x000000000044F000-memory.dmp

memory/5012-4-0x00000000005D0000-0x00000000005E0000-memory.dmp

memory/5012-0-0x00000000005B0000-0x00000000005C2000-memory.dmp