Malware Analysis Report

2025-01-23 13:37

Sample ID 241204-ezwa9sxkck
Target c0c8c9bd59878b035135f469fbdf5a3f_JaffaCakes118
SHA256 c7471db4f3956c462bb68ba0524288c4e4aca3184bd865f0f04ebc7672879f99
Tags
cryptone packer emotet 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

c7471db4f3956c462bb68ba0524288c4e4aca3184bd865f0f04ebc7672879f99

Threat Level: Known bad

The file c0c8c9bd59878b035135f469fbdf5a3f_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

cryptone packer emotet banker discovery trojan

Emotet

Emotet family

CryptOne packer

Drops file in System32 directory

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Suspicious use of UnmapMainImage

Modifies data under HKEY_USERS

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: RenamesItself

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-12-04 04:23

Signatures

CryptOne packer

cryptone packer
Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-12-04 04:23

Reported

2024-12-04 04:25

Platform

win7-20240708-en

Max time kernel

144s

Max time network

146s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c0c8c9bd59878b035135f469fbdf5a3f_JaffaCakes118.exe"

Signatures

Emotet

trojan banker emotet

Emotet family

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\iellevents.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:\Users\Admin\AppData\Local\Temp\c0c8c9bd59878b035135f469fbdf5a3f_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\c0c8c9bd59878b035135f469fbdf5a3f_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\iellevents.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\iellevents.exe N/A

Modifies data under HKEY_USERS

Description Indicator Process Target
Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0A0377A8-FF70-4A7F-BEE6-0CA71D73BEB1}\WpadNetworkName = "Network 3" C:\Windows\SysWOW64\iellevents.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b2-66-fc-89-7e-66\WpadDecisionReason = "1" C:\Windows\SysWOW64\iellevents.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f01a1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 C:\Windows\SysWOW64\iellevents.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0A0377A8-FF70-4A7F-BEE6-0CA71D73BEB1}\WpadDecisionTime = 40a5f14c0446db01 C:\Windows\SysWOW64\iellevents.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b2-66-fc-89-7e-66\WpadDecision = "0" C:\Windows\SysWOW64\iellevents.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections C:\Windows\SysWOW64\iellevents.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 C:\Windows\SysWOW64\iellevents.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" C:\Windows\SysWOW64\iellevents.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" C:\Windows\SysWOW64\iellevents.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings C:\Windows\SysWOW64\iellevents.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad C:\Windows\SysWOW64\iellevents.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0A0377A8-FF70-4A7F-BEE6-0CA71D73BEB1} C:\Windows\SysWOW64\iellevents.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b2-66-fc-89-7e-66 C:\Windows\SysWOW64\iellevents.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings C:\Windows\SysWOW64\iellevents.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 C:\Windows\SysWOW64\iellevents.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0A0377A8-FF70-4A7F-BEE6-0CA71D73BEB1}\b2-66-fc-89-7e-66 C:\Windows\SysWOW64\iellevents.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0A0377A8-FF70-4A7F-BEE6-0CA71D73BEB1}\WpadDecisionReason = "1" C:\Windows\SysWOW64\iellevents.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0A0377A8-FF70-4A7F-BEE6-0CA71D73BEB1}\WpadDecision = "0" C:\Windows\SysWOW64\iellevents.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b2-66-fc-89-7e-66\WpadDecisionTime = 40a5f14c0446db01 C:\Windows\SysWOW64\iellevents.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix C:\Windows\SysWOW64\iellevents.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0" C:\Windows\SysWOW64\iellevents.exe N/A

Suspicious behavior: EnumeratesProcesses

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

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c0c8c9bd59878b035135f469fbdf5a3f_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\c0c8c9bd59878b035135f469fbdf5a3f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\c0c8c9bd59878b035135f469fbdf5a3f_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\c0c8c9bd59878b035135f469fbdf5a3f_JaffaCakes118.exe

--be21362

C:\Windows\SysWOW64\iellevents.exe

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

C:\Windows\SysWOW64\iellevents.exe

--6cf6cd67

Network

Country Destination Domain Proto
US 71.78.158.190:80 tcp
US 71.78.158.190:80 tcp
US 208.180.217.173:80 tcp
US 208.180.217.173:80 tcp
AR 181.31.182.138:80 tcp
AR 181.31.182.138:80 tcp

Files

memory/1244-0-0x00000000001D0000-0x00000000001E1000-memory.dmp

memory/1244-1-0x0000000000400000-0x0000000000414000-memory.dmp

memory/1244-3-0x00000000001D0000-0x00000000001E1000-memory.dmp

memory/1244-4-0x0000000000400000-0x0000000000414000-memory.dmp

memory/1528-5-0x0000000000400000-0x0000000000417000-memory.dmp

memory/1528-6-0x0000000000400000-0x0000000000414000-memory.dmp

memory/2420-7-0x0000000000400000-0x0000000000417000-memory.dmp

memory/2420-8-0x0000000000400000-0x0000000000414000-memory.dmp

memory/1528-10-0x0000000000400000-0x0000000000414000-memory.dmp

memory/2788-11-0x0000000000400000-0x0000000000417000-memory.dmp

memory/2788-12-0x0000000000400000-0x0000000000417000-memory.dmp

memory/2788-13-0x0000000000400000-0x0000000000414000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-12-04 04:23

Reported

2024-12-04 04:25

Platform

win10v2004-20241007-en

Max time kernel

148s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c0c8c9bd59878b035135f469fbdf5a3f_JaffaCakes118.exe"

Signatures

Emotet

trojan banker emotet

Emotet family

emotet

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE C:\Windows\SysWOW64\randomprompt.exe N/A
File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies C:\Windows\SysWOW64\randomprompt.exe N/A
File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 C:\Windows\SysWOW64\randomprompt.exe N/A
File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 C:\Windows\SysWOW64\randomprompt.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:\Users\Admin\AppData\Local\Temp\c0c8c9bd59878b035135f469fbdf5a3f_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\c0c8c9bd59878b035135f469fbdf5a3f_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\randomprompt.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\randomprompt.exe N/A

Modifies data under HKEY_USERS

Description Indicator Process Target
Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix C:\Windows\SysWOW64\randomprompt.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" C:\Windows\SysWOW64\randomprompt.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" C:\Windows\SysWOW64\randomprompt.exe N/A

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c0c8c9bd59878b035135f469fbdf5a3f_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\c0c8c9bd59878b035135f469fbdf5a3f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\c0c8c9bd59878b035135f469fbdf5a3f_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\c0c8c9bd59878b035135f469fbdf5a3f_JaffaCakes118.exe

--be21362

C:\Windows\SysWOW64\randomprompt.exe

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

C:\Windows\SysWOW64\randomprompt.exe

--8dc774f9

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 71.78.158.190:80 tcp
US 8.8.8.8:53 68.209.201.84.in-addr.arpa udp
US 208.180.217.173:80 tcp
AR 181.31.182.138:80 tcp
VE 201.249.117.123:80 tcp
PA 190.219.231.69:80 tcp

Files

memory/4368-0-0x0000000002160000-0x0000000002171000-memory.dmp

memory/4368-1-0x0000000000400000-0x0000000000414000-memory.dmp

memory/4368-2-0x0000000000400000-0x0000000000414000-memory.dmp

memory/4368-4-0x0000000002160000-0x0000000002171000-memory.dmp

memory/512-5-0x0000000000400000-0x0000000000417000-memory.dmp

memory/512-6-0x0000000000400000-0x0000000000417000-memory.dmp

memory/4808-9-0x0000000000400000-0x0000000000417000-memory.dmp

memory/512-8-0x0000000000400000-0x0000000000417000-memory.dmp

memory/512-10-0x0000000000400000-0x0000000000417000-memory.dmp

memory/512-13-0x0000000000400000-0x0000000000414000-memory.dmp

memory/4540-15-0x0000000000400000-0x0000000000417000-memory.dmp

memory/4540-16-0x0000000000400000-0x0000000000417000-memory.dmp

memory/4540-18-0x0000000000400000-0x0000000000417000-memory.dmp

memory/4540-19-0x0000000000400000-0x0000000000417000-memory.dmp