Malware Analysis Report

2024-10-18 21:14

Sample ID 240711-bapweazcrk
Target 371a0dedff35ad7404fc25b22a11c7ff_JaffaCakes118
SHA256 b394b0a1d766371125ad6202a806a989459c42778d5e01c5c11233aeab8cdea9
Tags
emotet epoch1 banker 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

b394b0a1d766371125ad6202a806a989459c42778d5e01c5c11233aeab8cdea9

Threat Level: Known bad

The file 371a0dedff35ad7404fc25b22a11c7ff_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

emotet epoch1 banker trojan

Emotet

Blocklisted process makes network request

Loads dropped DLL

Drops file in System32 directory

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: RenamesItself

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-07-11 00:56

Signatures

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-11 00:56

Reported

2024-07-11 00:59

Platform

win10v2004-20240709-en

Max time kernel

140s

Max time network

95s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\371a0dedff35ad7404fc25b22a11c7ff_JaffaCakes118.dll,#1

Signatures

Emotet

trojan banker emotet

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\Iwxkixr\ylegbv.mck C:\Windows\SysWOW64\rundll32.exe N/A

Enumerates physical storage devices

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2472 wrote to memory of 1048 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2472 wrote to memory of 1048 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2472 wrote to memory of 1048 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1048 wrote to memory of 2744 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1048 wrote to memory of 2744 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1048 wrote to memory of 2744 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\371a0dedff35ad7404fc25b22a11c7ff_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\371a0dedff35ad7404fc25b22a11c7ff_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Iwxkixr\ylegbv.mck",Btrx

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 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 121.170.16.2.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp

Files

memory/1048-0-0x0000000000A20000-0x0000000000A41000-memory.dmp

memory/1048-1-0x0000000010000000-0x0000000010024000-memory.dmp

memory/1048-3-0x0000000010000000-0x0000000010024000-memory.dmp

C:\Windows\SysWOW64\Iwxkixr\ylegbv.mck

MD5 371a0dedff35ad7404fc25b22a11c7ff
SHA1 d06f0e843de828e8a97bba0f340d06c613c8d68f
SHA256 b394b0a1d766371125ad6202a806a989459c42778d5e01c5c11233aeab8cdea9
SHA512 2f152d7d729e1ca2392afc62466b712810434d9505b9d9b43ca801e2c732063bce6869cf6b8f45692ca9e1934a08338616af233530b1c8e49e0b40e435d8cfa5

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-11 00:56

Reported

2024-07-11 00:59

Platform

win7-20240704-en

Max time kernel

134s

Max time network

143s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\371a0dedff35ad7404fc25b22a11c7ff_JaffaCakes118.dll,#1

Signatures

Emotet

trojan banker emotet

Blocklisted process makes network request

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
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

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\Qbvlyr\szptj.apr C:\Windows\SysWOW64\rundll32.exe N/A

Enumerates physical storage devices

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
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:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2064 wrote to memory of 1736 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2064 wrote to memory of 1736 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2064 wrote to memory of 1736 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2064 wrote to memory of 1736 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2064 wrote to memory of 1736 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2064 wrote to memory of 1736 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2064 wrote to memory of 1736 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1736 wrote to memory of 840 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1736 wrote to memory of 840 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1736 wrote to memory of 840 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1736 wrote to memory of 840 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1736 wrote to memory of 840 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1736 wrote to memory of 840 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1736 wrote to memory of 840 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 840 wrote to memory of 1760 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 840 wrote to memory of 1760 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 840 wrote to memory of 1760 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 840 wrote to memory of 1760 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 840 wrote to memory of 1760 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 840 wrote to memory of 1760 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 840 wrote to memory of 1760 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\371a0dedff35ad7404fc25b22a11c7ff_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\371a0dedff35ad7404fc25b22a11c7ff_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Qbvlyr\szptj.apr",gTamHsOwCSb

C:\Windows\SysWOW64\rundll32.exe

C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Qbvlyr\szptj.apr",#1

Network

Country Destination Domain Proto
RO 84.232.229.24:80 tcp
RO 84.232.229.24:80 tcp
FR 51.255.203.164:8080 tcp
FR 51.255.203.164:8080 tcp
DE 217.160.169.110:8080 tcp
DE 217.160.169.110:8080 tcp

Files

memory/1736-0-0x0000000000660000-0x0000000000681000-memory.dmp

memory/1736-1-0x0000000010000000-0x0000000010024000-memory.dmp

memory/1736-2-0x0000000010000000-0x0000000010024000-memory.dmp

memory/840-3-0x0000000010000000-0x0000000010024000-memory.dmp

memory/1760-4-0x0000000010000000-0x0000000010024000-memory.dmp

memory/1760-5-0x0000000010000000-0x0000000010024000-memory.dmp

memory/1760-6-0x0000000010000000-0x0000000010024000-memory.dmp