Malware Analysis Report

2024-10-18 21:14

Sample ID 240711-nbkz3atfml
Target 38e0d4090d5cd5f56d75815ab55ef54c_JaffaCakes118
SHA256 78a267bf4117662166b2382d9c3ed3552f2f4f322fb80f962f6d92306893badf
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: 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

78a267bf4117662166b2382d9c3ed3552f2f4f322fb80f962f6d92306893badf

Threat Level: Known bad

The file 38e0d4090d5cd5f56d75815ab55ef54c_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

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: RenamesItself

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-07-11 11:13

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-11 11:13

Reported

2024-07-11 11:15

Platform

win7-20240708-en

Max time kernel

148s

Max time network

148s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\38e0d4090d5cd5f56d75815ab55ef54c_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\Gipchnisw\cuzjqjld.nyv 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 2632 wrote to memory of 1716 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2632 wrote to memory of 1716 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2632 wrote to memory of 1716 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2632 wrote to memory of 1716 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2632 wrote to memory of 1716 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2632 wrote to memory of 1716 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2632 wrote to memory of 1716 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1716 wrote to memory of 2488 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1716 wrote to memory of 2488 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1716 wrote to memory of 2488 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1716 wrote to memory of 2488 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1716 wrote to memory of 2488 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1716 wrote to memory of 2488 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1716 wrote to memory of 2488 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2488 wrote to memory of 3052 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2488 wrote to memory of 3052 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2488 wrote to memory of 3052 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2488 wrote to memory of 3052 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2488 wrote to memory of 3052 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2488 wrote to memory of 3052 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2488 wrote to memory of 3052 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\38e0d4090d5cd5f56d75815ab55ef54c_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\38e0d4090d5cd5f56d75815ab55ef54c_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Gipchnisw\cuzjqjld.nyv",XMEDOGZzXfyGmV

C:\Windows\SysWOW64\rundll32.exe

C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Gipchnisw\cuzjqjld.nyv",#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/1716-0-0x0000000000300000-0x000000000039E000-memory.dmp

memory/1716-2-0x0000000000301000-0x0000000000364000-memory.dmp

memory/1716-1-0x0000000000130000-0x0000000000157000-memory.dmp

memory/1716-4-0x0000000000301000-0x0000000000364000-memory.dmp

memory/1716-3-0x0000000000300000-0x000000000039E000-memory.dmp

memory/2488-5-0x0000000000940000-0x00000000009DE000-memory.dmp

memory/2488-6-0x0000000000941000-0x00000000009A4000-memory.dmp

memory/2488-7-0x0000000000940000-0x00000000009DE000-memory.dmp

memory/3052-8-0x0000000000400000-0x0000000000424000-memory.dmp

memory/3052-9-0x0000000000400000-0x000000000049E000-memory.dmp

memory/3052-11-0x0000000000400000-0x0000000000424000-memory.dmp

memory/3052-14-0x0000000000400000-0x000000000049E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-11 11:13

Reported

2024-07-11 11:15

Platform

win10v2004-20240709-en

Max time kernel

143s

Max time network

147s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\38e0d4090d5cd5f56d75815ab55ef54c_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

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

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\Gdsazy\ktmpx.omr 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

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\38e0d4090d5cd5f56d75815ab55ef54c_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\38e0d4090d5cd5f56d75815ab55ef54c_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Gdsazy\ktmpx.omr",ZNpVTD

C:\Windows\SysWOW64\rundll32.exe

C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Gdsazy\ktmpx.omr",#1

Network

Country Destination Domain Proto
US 8.8.8.8:53 73.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
RO 84.232.229.24:80 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
FR 51.255.203.164:8080 tcp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
DE 217.160.169.110:8080 tcp
ES 185.183.16.47:80 tcp
US 8.8.8.8:53 98.58.20.217.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
CL 190.45.24.210:80 tcp
MX 187.162.248.237:80 tcp

Files

memory/4224-0-0x0000000000A00000-0x0000000000A9E000-memory.dmp

memory/4224-1-0x0000000000AB0000-0x0000000000AD7000-memory.dmp

memory/4224-2-0x0000000000A00000-0x0000000000A24000-memory.dmp

memory/4224-3-0x0000000000A00000-0x0000000000A9E000-memory.dmp

memory/4224-4-0x0000000000A00000-0x0000000000A24000-memory.dmp

C:\Windows\SysWOW64\Gdsazy\ktmpx.omr

MD5 38e0d4090d5cd5f56d75815ab55ef54c
SHA1 0aa3101b4d096b4a5464fdc1c1ff87347a692335
SHA256 78a267bf4117662166b2382d9c3ed3552f2f4f322fb80f962f6d92306893badf
SHA512 c05a465ebd1ef0c15b9ba80d89f4971d85fed5979f3f6fea51c684052cf4ca848fb0df84e6625e084ff9e951d9ae8dd8cd6cd541e6d379fd121d677066c51631

memory/1852-6-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1852-8-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1852-7-0x0000000000400000-0x000000000049E000-memory.dmp

memory/1144-11-0x0000000000400000-0x000000000049E000-memory.dmp

memory/1144-10-0x0000000000400000-0x000000000049E000-memory.dmp

memory/1144-12-0x0000000000400000-0x000000000049E000-memory.dmp

memory/1144-14-0x0000000000400000-0x000000000049E000-memory.dmp