Malware Analysis Report

2024-09-22 22:03

Sample ID 240615-a5bftsxakl
Target ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118
SHA256 4a417963968601bbe8f9311d779d1a022a380829bed4b7af4daf934eeba5c70f
Tags
emotet banker trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

4a417963968601bbe8f9311d779d1a022a380829bed4b7af4daf934eeba5c70f

Threat Level: Known bad

The file ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

emotet banker trojan

Emotet

Drops file in System32 directory

Enumerates physical storage devices

Unsigned PE

Modifies data under HKEY_USERS

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: RenamesItself

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-06-15 00:47

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-15 00:47

Reported

2024-06-15 00:49

Platform

win7-20240221-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118.exe"

Signatures

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat C:\Windows\SysWOW64\stepsimp.exe N/A

Enumerates physical storage devices

Modifies data under HKEY_USERS

Description Indicator Process Target
Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b6-eb-7e-51-d1-c6 C:\Windows\SysWOW64\stepsimp.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings C:\Windows\SysWOW64\stepsimp.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 C:\Windows\SysWOW64\stepsimp.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings C:\Windows\SysWOW64\stepsimp.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad C:\Windows\SysWOW64\stepsimp.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0117000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 C:\Windows\SysWOW64\stepsimp.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0" C:\Windows\SysWOW64\stepsimp.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 C:\Windows\SysWOW64\stepsimp.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{E38402DF-3D1C-46FF-9F71-7B7F06D441B3}\WpadDecisionReason = "1" C:\Windows\SysWOW64\stepsimp.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{E38402DF-3D1C-46FF-9F71-7B7F06D441B3}\WpadDecisionTime = d06bad9fbdbeda01 C:\Windows\SysWOW64\stepsimp.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b6-eb-7e-51-d1-c6\WpadDecisionTime = d06bad9fbdbeda01 C:\Windows\SysWOW64\stepsimp.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{E38402DF-3D1C-46FF-9F71-7B7F06D441B3}\WpadDecision = "0" C:\Windows\SysWOW64\stepsimp.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b6-eb-7e-51-d1-c6\WpadDetectedUrl C:\Windows\SysWOW64\stepsimp.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b6-eb-7e-51-d1-c6\WpadDecision = "0" C:\Windows\SysWOW64\stepsimp.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections C:\Windows\SysWOW64\stepsimp.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{E38402DF-3D1C-46FF-9F71-7B7F06D441B3} C:\Windows\SysWOW64\stepsimp.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{E38402DF-3D1C-46FF-9F71-7B7F06D441B3}\WpadNetworkName = "Network 3" C:\Windows\SysWOW64\stepsimp.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{E38402DF-3D1C-46FF-9F71-7B7F06D441B3}\b6-eb-7e-51-d1-c6 C:\Windows\SysWOW64\stepsimp.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b6-eb-7e-51-d1-c6\WpadDecisionReason = "1" C:\Windows\SysWOW64\stepsimp.exe N/A

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118.exe"

C:\Windows\SysWOW64\stepsimp.exe

"C:\Windows\SysWOW64\stepsimp.exe"

C:\Windows\SysWOW64\stepsimp.exe

"C:\Windows\SysWOW64\stepsimp.exe"

Network

Country Destination Domain Proto
US 98.6.40.86:8080 tcp
US 98.6.40.86:8080 tcp
CN 114.55.106.210:443 tcp
CN 114.55.106.210:443 tcp
CA 54.39.179.152:80 tcp
CA 54.39.179.152:80 tcp
SA 128.234.190.116:8090 tcp

Files

memory/2164-0-0x00000000008D0000-0x00000000008E7000-memory.dmp

memory/2164-4-0x00000000008D0000-0x00000000008E7000-memory.dmp

memory/2164-6-0x0000000000230000-0x0000000000240000-memory.dmp

memory/2164-5-0x0000000000210000-0x0000000000227000-memory.dmp

memory/2572-7-0x00000000001B0000-0x00000000001C7000-memory.dmp

memory/2572-13-0x00000000001E0000-0x00000000001F0000-memory.dmp

memory/2572-12-0x0000000000190000-0x00000000001A7000-memory.dmp

memory/2572-11-0x00000000001B0000-0x00000000001C7000-memory.dmp

memory/2164-14-0x0000000000210000-0x0000000000227000-memory.dmp

memory/2600-19-0x0000000000270000-0x0000000000287000-memory.dmp

memory/2600-15-0x0000000000270000-0x0000000000287000-memory.dmp

memory/2600-21-0x0000000000290000-0x00000000002A0000-memory.dmp

memory/2600-20-0x0000000000250000-0x0000000000267000-memory.dmp

memory/2540-27-0x0000000000290000-0x00000000002A7000-memory.dmp

memory/2540-26-0x00000000002B0000-0x00000000002C7000-memory.dmp

memory/2540-28-0x00000000002D0000-0x00000000002E0000-memory.dmp

memory/2540-22-0x00000000002B0000-0x00000000002C7000-memory.dmp

memory/2600-29-0x0000000000250000-0x0000000000267000-memory.dmp

memory/2572-30-0x0000000000CE0000-0x0000000000D44000-memory.dmp

memory/2572-31-0x0000000000190000-0x00000000001A7000-memory.dmp

memory/2540-32-0x0000000000290000-0x00000000002A7000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-15 00:47

Reported

2024-06-15 00:49

Platform

win10v2004-20240611-en

Max time kernel

144s

Max time network

140s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118.exe"

Signatures

Emotet

trojan banker emotet

Enumerates physical storage devices

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\ac4ad219921aa13ac020f5dc460ad503_JaffaCakes118.exe"

C:\Windows\SysWOW64\readmerunning.exe

"C:\Windows\SysWOW64\readmerunning.exe"

C:\Windows\SysWOW64\readmerunning.exe

"C:\Windows\SysWOW64\readmerunning.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 200.131.50.23.in-addr.arpa udp
US 8.8.8.8:53 23.159.190.20.in-addr.arpa udp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 194.61.62.23.in-addr.arpa udp
US 98.6.40.86:8080 tcp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
CN 114.55.106.210:443 tcp
CA 54.39.179.152:80 tcp
SA 128.234.190.116:8090 tcp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
EC 186.68.82.19:80 tcp
US 173.17.134.231:8080 tcp

Files

memory/3380-4-0x00000000015C0000-0x00000000015D7000-memory.dmp

memory/3380-0-0x00000000015C0000-0x00000000015D7000-memory.dmp

memory/3380-6-0x00000000015E0000-0x00000000015F0000-memory.dmp

memory/3380-5-0x00000000015A0000-0x00000000015B7000-memory.dmp

memory/652-11-0x00000000012A0000-0x00000000012B7000-memory.dmp

memory/652-7-0x00000000012A0000-0x00000000012B7000-memory.dmp

memory/652-13-0x00000000012C0000-0x00000000012D0000-memory.dmp

memory/652-12-0x0000000001280000-0x0000000001297000-memory.dmp

memory/3188-14-0x0000000001670000-0x0000000001687000-memory.dmp

memory/3188-18-0x0000000001670000-0x0000000001687000-memory.dmp

memory/3188-19-0x0000000001650000-0x0000000001667000-memory.dmp

memory/3188-20-0x0000000001690000-0x00000000016A0000-memory.dmp

memory/3800-25-0x0000000001120000-0x0000000001137000-memory.dmp

memory/3800-21-0x0000000001120000-0x0000000001137000-memory.dmp

memory/3800-27-0x0000000001140000-0x0000000001150000-memory.dmp

memory/3800-26-0x0000000001100000-0x0000000001117000-memory.dmp

memory/3188-28-0x0000000001650000-0x0000000001667000-memory.dmp

memory/652-29-0x0000000000DE0000-0x0000000000E44000-memory.dmp

memory/652-30-0x0000000001280000-0x0000000001297000-memory.dmp

memory/3800-31-0x0000000001100000-0x0000000001117000-memory.dmp