Malware Analysis Report

2025-01-03 05:47

Sample ID 240506-hepjrsfc48
Target 1b3af5962c2fd7b169c9134c74753094_JaffaCakes118
SHA256 224f9ca9a8c26292e61e2143a3c0e47ebbd443bc67991f588f4cd3073ede3d96
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

224f9ca9a8c26292e61e2143a3c0e47ebbd443bc67991f588f4cd3073ede3d96

Threat Level: Known bad

The file 1b3af5962c2fd7b169c9134c74753094_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

emotet epoch1 banker trojan

Emotet

Drops file in System32 directory

Unsigned PE

Enumerates physical storage devices

Program crash

Suspicious behavior: RenamesItself

Modifies data under HKEY_USERS

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-06 06:39

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-06 06:39

Reported

2024-05-06 06:41

Platform

win7-20240221-en

Max time kernel

146s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1b3af5962c2fd7b169c9134c74753094_JaffaCakes118.exe"

Signatures

Emotet

trojan banker emotet

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\rebrandskip.exe N/A

Enumerates physical storage devices

Modifies data under HKEY_USERS

Description Indicator Process Target
Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 C:\Windows\SysWOW64\rebrandskip.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fe-1b-e0-db-da-20\WpadDecisionReason = "1" C:\Windows\SysWOW64\rebrandskip.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fe-1b-e0-db-da-20\WpadDecision = "0" C:\Windows\SysWOW64\rebrandskip.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000004000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f008a000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 C:\Windows\SysWOW64\rebrandskip.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections C:\Windows\SysWOW64\rebrandskip.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0" C:\Windows\SysWOW64\rebrandskip.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fe-1b-e0-db-da-20 C:\Windows\SysWOW64\rebrandskip.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings C:\Windows\SysWOW64\rebrandskip.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix C:\Windows\SysWOW64\rebrandskip.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9DCF05A0-8F7B-4B9B-8D02-882E3DA5E092}\WpadDecisionTime = 40711d67809fda01 C:\Windows\SysWOW64\rebrandskip.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fe-1b-e0-db-da-20\WpadDecisionTime = 40711d67809fda01 C:\Windows\SysWOW64\rebrandskip.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9DCF05A0-8F7B-4B9B-8D02-882E3DA5E092}\WpadDecisionReason = "1" C:\Windows\SysWOW64\rebrandskip.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9DCF05A0-8F7B-4B9B-8D02-882E3DA5E092}\WpadDecisionTime = 200b832d809fda01 C:\Windows\SysWOW64\rebrandskip.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9DCF05A0-8F7B-4B9B-8D02-882E3DA5E092}\WpadDecision = "0" C:\Windows\SysWOW64\rebrandskip.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" C:\Windows\SysWOW64\rebrandskip.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fe-1b-e0-db-da-20\WpadDecisionTime = 200b832d809fda01 C:\Windows\SysWOW64\rebrandskip.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f008a000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 C:\Windows\SysWOW64\rebrandskip.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9DCF05A0-8F7B-4B9B-8D02-882E3DA5E092} C:\Windows\SysWOW64\rebrandskip.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 C:\Windows\SysWOW64\rebrandskip.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings C:\Windows\SysWOW64\rebrandskip.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9DCF05A0-8F7B-4B9B-8D02-882E3DA5E092}\fe-1b-e0-db-da-20 C:\Windows\SysWOW64\rebrandskip.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fe-1b-e0-db-da-20\WpadDetectedUrl C:\Windows\SysWOW64\rebrandskip.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" C:\Windows\SysWOW64\rebrandskip.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad C:\Windows\SysWOW64\rebrandskip.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9DCF05A0-8F7B-4B9B-8D02-882E3DA5E092}\WpadNetworkName = "Network 3" C:\Windows\SysWOW64\rebrandskip.exe N/A

Suspicious behavior: EnumeratesProcesses

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

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\1b3af5962c2fd7b169c9134c74753094_jaffacakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\1b3af5962c2fd7b169c9134c74753094_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\1b3af5962c2fd7b169c9134c74753094_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\1b3af5962c2fd7b169c9134c74753094_jaffacakes118.exe

--2cecd7fb

C:\Windows\SysWOW64\rebrandskip.exe

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

C:\Windows\SysWOW64\rebrandskip.exe

--1315b2c9

Network

Country Destination Domain Proto
US 69.162.169.173:8080 tcp
US 69.162.169.173:8080 tcp
SG 68.183.190.199:8080 tcp
SG 68.183.190.199:8080 tcp
ID 103.31.232.93:443 tcp
ID 103.31.232.93:443 tcp
DE 5.1.86.195:8080 tcp
DE 5.1.86.195:8080 tcp

Files

memory/2232-0-0x00000000003C0000-0x00000000003D7000-memory.dmp

memory/2232-5-0x00000000003B0000-0x00000000003C0000-memory.dmp

memory/2916-11-0x0000000000280000-0x0000000000297000-memory.dmp

memory/2180-16-0x0000000000400000-0x0000000000432000-memory.dmp

memory/2532-17-0x00000000003E0000-0x00000000003F7000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-06 06:39

Reported

2024-05-06 06:41

Platform

win10v2004-20240419-en

Max time kernel

133s

Max time network

101s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1b3af5962c2fd7b169c9134c74753094_JaffaCakes118.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\1b3af5962c2fd7b169c9134c74753094_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\1b3af5962c2fd7b169c9134c74753094_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\1b3af5962c2fd7b169c9134c74753094_jaffacakes118.exe

--2cecd7fb

C:\Windows\SysWOW64\kdscrypto.exe

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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4140 -ip 4140

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4140 -s 300

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 77.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
NL 23.62.61.155:443 www.bing.com tcp
US 8.8.8.8:53 155.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 139.53.16.96.in-addr.arpa udp
US 8.8.8.8:53 49.15.97.104.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp

Files

memory/2296-0-0x0000000002300000-0x0000000002317000-memory.dmp

memory/2296-5-0x0000000002260000-0x0000000002270000-memory.dmp

memory/4532-6-0x00000000021D0000-0x00000000021E7000-memory.dmp

memory/4532-11-0x0000000000400000-0x0000000000432000-memory.dmp