Malware Analysis Report

2025-01-18 12:24

Sample ID 240829-2xravswanf
Target c9ccade124b44534d0ff46033c9262f6_JaffaCakes118
SHA256 cbd43bdcb7e75cff1e937fe47faa7770647da504aa28fbf3f1b7415ac282456e
Tags
formbook s3dy discovery rat spyware stealer 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: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

cbd43bdcb7e75cff1e937fe47faa7770647da504aa28fbf3f1b7415ac282456e

Threat Level: Known bad

The file c9ccade124b44534d0ff46033c9262f6_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

formbook s3dy discovery rat spyware stealer trojan

Formbook

Formbook payload

Loads dropped DLL

Suspicious use of SetThreadContext

Program crash

System Location Discovery: System Language Discovery

Unsigned PE

Enumerates physical storage devices

NSIS installer

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious behavior: MapViewOfSection

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-29 22:57

Signatures

Unsigned PE

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

NSIS installer

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-29 22:57

Reported

2024-08-29 23:00

Platform

win7-20240708-en

Max time kernel

121s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c9ccade124b44534d0ff46033c9262f6_JaffaCakes118.exe"

Signatures

Formbook

trojan spyware stealer formbook

Formbook payload

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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c9ccade124b44534d0ff46033c9262f6_JaffaCakes118.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\c9ccade124b44534d0ff46033c9262f6_JaffaCakes118.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c9ccade124b44534d0ff46033c9262f6_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2168 wrote to memory of 2288 N/A C:\Users\Admin\AppData\Local\Temp\c9ccade124b44534d0ff46033c9262f6_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c9ccade124b44534d0ff46033c9262f6_JaffaCakes118.exe
PID 2168 wrote to memory of 2288 N/A C:\Users\Admin\AppData\Local\Temp\c9ccade124b44534d0ff46033c9262f6_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c9ccade124b44534d0ff46033c9262f6_JaffaCakes118.exe
PID 2168 wrote to memory of 2288 N/A C:\Users\Admin\AppData\Local\Temp\c9ccade124b44534d0ff46033c9262f6_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c9ccade124b44534d0ff46033c9262f6_JaffaCakes118.exe
PID 2168 wrote to memory of 2288 N/A C:\Users\Admin\AppData\Local\Temp\c9ccade124b44534d0ff46033c9262f6_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c9ccade124b44534d0ff46033c9262f6_JaffaCakes118.exe
PID 2168 wrote to memory of 2288 N/A C:\Users\Admin\AppData\Local\Temp\c9ccade124b44534d0ff46033c9262f6_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c9ccade124b44534d0ff46033c9262f6_JaffaCakes118.exe
PID 2168 wrote to memory of 2288 N/A C:\Users\Admin\AppData\Local\Temp\c9ccade124b44534d0ff46033c9262f6_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c9ccade124b44534d0ff46033c9262f6_JaffaCakes118.exe
PID 2168 wrote to memory of 2288 N/A C:\Users\Admin\AppData\Local\Temp\c9ccade124b44534d0ff46033c9262f6_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\c9ccade124b44534d0ff46033c9262f6_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\c9ccade124b44534d0ff46033c9262f6_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\c9ccade124b44534d0ff46033c9262f6_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\c9ccade124b44534d0ff46033c9262f6_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\c9ccade124b44534d0ff46033c9262f6_JaffaCakes118.exe"

Network

N/A

Files

C:\Users\Admin\AppData\Local\Temp\nsoE63B.tmp\mfhecv.dll

MD5 e97a552be97bf8ca0cd083250ef8b343
SHA1 8283294c2b23684bf1aa6bdc7729ef80efcf7673
SHA256 7ae5225917f9eb18e030e2aad1c0b9f7a3fc5789986e9222281cb3663d5f0775
SHA512 0f9f53254f11ee2f3cf757ba5459c8380bd07872cbb12a5dc0a681f978e5c10eb136bca57de593adbd806980d1484896a47ab4eaab1794c98113b80992e9a07a

memory/2168-7-0x0000000010000000-0x000000001000B000-memory.dmp

memory/2288-9-0x0000000000400000-0x000000000042E000-memory.dmp

memory/2168-10-0x0000000010000000-0x000000001000B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-29 22:57

Reported

2024-08-29 23:00

Platform

win10v2004-20240802-en

Max time kernel

133s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c9ccade124b44534d0ff46033c9262f6_JaffaCakes118.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\c9ccade124b44534d0ff46033c9262f6_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\c9ccade124b44534d0ff46033c9262f6_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\c9ccade124b44534d0ff46033c9262f6_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\c9ccade124b44534d0ff46033c9262f6_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4388 -ip 4388

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4388 -s 1004

Network

Country Destination Domain Proto
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 134.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.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 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\nsk9E93.tmp\mfhecv.dll

MD5 e97a552be97bf8ca0cd083250ef8b343
SHA1 8283294c2b23684bf1aa6bdc7729ef80efcf7673
SHA256 7ae5225917f9eb18e030e2aad1c0b9f7a3fc5789986e9222281cb3663d5f0775
SHA512 0f9f53254f11ee2f3cf757ba5459c8380bd07872cbb12a5dc0a681f978e5c10eb136bca57de593adbd806980d1484896a47ab4eaab1794c98113b80992e9a07a

memory/4388-4-0x0000000010000000-0x000000001000B000-memory.dmp

memory/4388-9-0x0000000010000000-0x000000001000B000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-08-29 22:57

Reported

2024-08-29 23:00

Platform

win7-20240704-en

Max time kernel

145s

Max time network

118s

Command Line

C:\Windows\Explorer.EXE

Signatures

Formbook

trojan spyware stealer formbook

Formbook payload

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2864 set thread context of 2888 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2888 set thread context of 1208 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\Explorer.EXE
PID 2424 set thread context of 1208 N/A C:\Windows\SysWOW64\help.exe C:\Windows\Explorer.EXE

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\help.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A

Suspicious behavior: MapViewOfSection

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\help.exe N/A
N/A N/A C:\Windows\SysWOW64\help.exe N/A

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2756 wrote to memory of 2864 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2756 wrote to memory of 2864 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2756 wrote to memory of 2864 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2756 wrote to memory of 2864 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2756 wrote to memory of 2864 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2756 wrote to memory of 2864 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2756 wrote to memory of 2864 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2864 wrote to memory of 2888 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2864 wrote to memory of 2888 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2864 wrote to memory of 2888 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2864 wrote to memory of 2888 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2864 wrote to memory of 2888 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2864 wrote to memory of 2888 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2864 wrote to memory of 2888 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2864 wrote to memory of 2888 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2864 wrote to memory of 2888 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2864 wrote to memory of 2888 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1208 wrote to memory of 2424 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\help.exe
PID 1208 wrote to memory of 2424 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\help.exe
PID 1208 wrote to memory of 2424 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\help.exe
PID 1208 wrote to memory of 2424 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\help.exe
PID 2424 wrote to memory of 3064 N/A C:\Windows\SysWOW64\help.exe C:\Windows\SysWOW64\cmd.exe
PID 2424 wrote to memory of 3064 N/A C:\Windows\SysWOW64\help.exe C:\Windows\SysWOW64\cmd.exe
PID 2424 wrote to memory of 3064 N/A C:\Windows\SysWOW64\help.exe C:\Windows\SysWOW64\cmd.exe
PID 2424 wrote to memory of 3064 N/A C:\Windows\SysWOW64\help.exe C:\Windows\SysWOW64\cmd.exe

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\mfhecv.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\mfhecv.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\mfhecv.dll,#1

C:\Windows\SysWOW64\help.exe

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

C:\Windows\SysWOW64\cmd.exe

/c del "C:\Windows\SysWOW64\rundll32.exe"

Network

N/A

Files

memory/2864-0-0x0000000010000000-0x000000001000B000-memory.dmp

memory/2888-1-0x0000000000400000-0x000000000042E000-memory.dmp

memory/2864-2-0x0000000010000000-0x000000001000B000-memory.dmp

memory/2888-3-0x00000000021B0000-0x00000000024B3000-memory.dmp

memory/2888-6-0x00000000001C0000-0x00000000001D4000-memory.dmp

memory/2888-5-0x0000000000400000-0x000000000042E000-memory.dmp

memory/1208-7-0x0000000004EB0000-0x0000000004F87000-memory.dmp

memory/2424-9-0x0000000000570000-0x0000000000576000-memory.dmp

memory/2424-8-0x0000000000570000-0x0000000000576000-memory.dmp

memory/1208-10-0x0000000004EB0000-0x0000000004F87000-memory.dmp

Analysis: behavioral4

Detonation Overview

Submitted

2024-08-29 22:57

Reported

2024-08-29 23:00

Platform

win10v2004-20240802-en

Max time kernel

142s

Max time network

131s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\mfhecv.dll,#1

Signatures

Program crash

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

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\mfhecv.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\mfhecv.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\mfhecv.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2492 -ip 2492

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2492 -s 692

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 150.171.27.10:443 g.bing.com tcp
US 8.8.8.8:53 68.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
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 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp

Files

memory/2492-0-0x0000000010000000-0x000000001000B000-memory.dmp

memory/2492-1-0x0000000010000000-0x000000001000B000-memory.dmp