Malware Analysis Report

2025-01-18 12:38

Sample ID 240404-gh1krsgc4x
Target b16bb2a4fe3ee1b986926530169eeb44_JaffaCakes118
SHA256 336a2648e0811ebd11a94bb59c5cd5ea06ff48485f734ce149a3f9f9a7e0c7f4
Tags
formbook dn7r rat spyware stealer trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

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

336a2648e0811ebd11a94bb59c5cd5ea06ff48485f734ce149a3f9f9a7e0c7f4

Threat Level: Known bad

The file b16bb2a4fe3ee1b986926530169eeb44_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

formbook dn7r rat spyware stealer trojan

Formbook

Formbook payload

Loads dropped DLL

Suspicious use of SetThreadContext

Unsigned PE

Enumerates physical storage devices

Program crash

NSIS installer

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-04 05:49

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: behavioral3

Detonation Overview

Submitted

2024-04-04 05:49

Reported

2024-04-04 05:51

Platform

win7-20240215-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
N/A N/A N/A N/A
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 2212 set thread context of 2988 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2988 set thread context of 1184 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\Explorer.EXE
PID 2988 set thread context of 1184 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\Explorer.EXE
PID 2544 set thread context of 1184 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\Explorer.EXE

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\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.exe N/A
N/A N/A C:\Windows\SysWOW64\explorer.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\explorer.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1776 wrote to memory of 2212 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1776 wrote to memory of 2212 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1776 wrote to memory of 2212 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1776 wrote to memory of 2212 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1776 wrote to memory of 2212 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1776 wrote to memory of 2212 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1776 wrote to memory of 2212 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2212 wrote to memory of 2988 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2212 wrote to memory of 2988 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2212 wrote to memory of 2988 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2212 wrote to memory of 2988 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2212 wrote to memory of 2988 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2212 wrote to memory of 2988 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2212 wrote to memory of 2988 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2212 wrote to memory of 2988 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2212 wrote to memory of 2988 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2212 wrote to memory of 2988 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2988 wrote to memory of 2544 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\explorer.exe
PID 2988 wrote to memory of 2544 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\explorer.exe
PID 2988 wrote to memory of 2544 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\explorer.exe
PID 2988 wrote to memory of 2544 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\explorer.exe
PID 2544 wrote to memory of 2668 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\SysWOW64\cmd.exe
PID 2544 wrote to memory of 2668 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\SysWOW64\cmd.exe
PID 2544 wrote to memory of 2668 N/A C:\Windows\SysWOW64\explorer.exe C:\Windows\SysWOW64\cmd.exe
PID 2544 wrote to memory of 2668 N/A C:\Windows\SysWOW64\explorer.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\pibyjvpg.dll,#1

C:\Windows\SysWOW64\rundll32.exe

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

C:\Windows\SysWOW64\rundll32.exe

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

C:\Windows\SysWOW64\explorer.exe

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

C:\Windows\SysWOW64\cmd.exe

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

Network

N/A

Files

memory/2212-0-0x0000000074E00000-0x0000000074E0B000-memory.dmp

memory/2212-1-0x0000000074DF0000-0x0000000074DFB000-memory.dmp

memory/2212-2-0x0000000074E00000-0x0000000074E0B000-memory.dmp

memory/2212-3-0x0000000074DF0000-0x0000000074DFB000-memory.dmp

memory/2988-4-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2212-5-0x0000000074E00000-0x0000000074E07000-memory.dmp

memory/2212-6-0x0000000074DF0000-0x0000000074DFB000-memory.dmp

memory/2988-7-0x0000000001FF0000-0x00000000022F3000-memory.dmp

memory/2988-10-0x00000000001F0000-0x0000000000205000-memory.dmp

memory/2988-9-0x0000000000400000-0x000000000042F000-memory.dmp

memory/1184-11-0x0000000004DB0000-0x0000000004EC5000-memory.dmp

memory/2988-13-0x0000000000400000-0x000000000042F000-memory.dmp

memory/1184-15-0x0000000005010000-0x00000000050F2000-memory.dmp

memory/2988-14-0x00000000003B0000-0x00000000003C5000-memory.dmp

memory/2544-16-0x0000000000150000-0x00000000003D1000-memory.dmp

memory/2544-17-0x0000000000150000-0x00000000003D1000-memory.dmp

memory/2544-18-0x0000000000080000-0x00000000000AF000-memory.dmp

memory/2544-19-0x0000000002740000-0x0000000002A43000-memory.dmp

memory/2544-20-0x0000000000080000-0x00000000000AF000-memory.dmp

memory/2544-21-0x00000000024C0000-0x0000000002554000-memory.dmp

memory/1184-22-0x0000000005010000-0x00000000050F2000-memory.dmp

Analysis: behavioral4

Detonation Overview

Submitted

2024-04-04 05:49

Reported

2024-04-04 05:51

Platform

win10v2004-20240226-en

Max time kernel

93s

Max time network

145s

Command Line

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

Signatures

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1484 wrote to memory of 2744 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1484 wrote to memory of 2744 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1484 wrote to memory of 2744 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2744 wrote to memory of 4948 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2744 wrote to memory of 4948 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2744 wrote to memory of 4948 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\$PLUGINSDIR\pibyjvpg.dll,#1

C:\Windows\SysWOW64\rundll32.exe

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

C:\Windows\SysWOW64\rundll32.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 67.31.126.40.in-addr.arpa udp
US 20.231.121.79:80 tcp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 99.58.20.217.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp

Files

memory/2744-0-0x0000000075550000-0x000000007555B000-memory.dmp

memory/2744-1-0x0000000075550000-0x000000007555B000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-04 05:49

Reported

2024-04-04 05:51

Platform

win7-20240221-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b16bb2a4fe3ee1b986926530169eeb44_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\b16bb2a4fe3ee1b986926530169eeb44_JaffaCakes118.exe N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\b16bb2a4fe3ee1b986926530169eeb44_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2960 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\b16bb2a4fe3ee1b986926530169eeb44_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b16bb2a4fe3ee1b986926530169eeb44_JaffaCakes118.exe
PID 2960 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\b16bb2a4fe3ee1b986926530169eeb44_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b16bb2a4fe3ee1b986926530169eeb44_JaffaCakes118.exe
PID 2960 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\b16bb2a4fe3ee1b986926530169eeb44_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b16bb2a4fe3ee1b986926530169eeb44_JaffaCakes118.exe
PID 2960 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\b16bb2a4fe3ee1b986926530169eeb44_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b16bb2a4fe3ee1b986926530169eeb44_JaffaCakes118.exe
PID 2960 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\b16bb2a4fe3ee1b986926530169eeb44_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b16bb2a4fe3ee1b986926530169eeb44_JaffaCakes118.exe
PID 2960 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\b16bb2a4fe3ee1b986926530169eeb44_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b16bb2a4fe3ee1b986926530169eeb44_JaffaCakes118.exe
PID 2960 wrote to memory of 2800 N/A C:\Users\Admin\AppData\Local\Temp\b16bb2a4fe3ee1b986926530169eeb44_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\b16bb2a4fe3ee1b986926530169eeb44_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\b16bb2a4fe3ee1b986926530169eeb44_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\b16bb2a4fe3ee1b986926530169eeb44_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\b16bb2a4fe3ee1b986926530169eeb44_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\b16bb2a4fe3ee1b986926530169eeb44_JaffaCakes118.exe"

Network

N/A

Files

\Users\Admin\AppData\Local\Temp\nsd1FA2.tmp\pibyjvpg.dll

MD5 7e38c9c4dae24727bfc89d6feba8cb3e
SHA1 53500d0d0b8921fe6690dbdd2009be6d9c06adc6
SHA256 087ed293380602e60c32df98be8412bd73d32beba232bc255a6fb3edf46134ff
SHA512 835412fa1c001a1ec811a51be9afc361cea9ec8db8a85912bf7007b20f74b338323b59ac637a1cfc9afebdf57c6a441680c0707d15c13c7560eaacc94a56a985

memory/2960-7-0x0000000074E20000-0x0000000074E2B000-memory.dmp

memory/2800-9-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2960-10-0x0000000074E20000-0x0000000074E2B000-memory.dmp

memory/2800-12-0x0000000000730000-0x0000000000A33000-memory.dmp

memory/2800-14-0x0000000000730000-0x0000000000A33000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-04 05:49

Reported

2024-04-04 05:51

Platform

win10v2004-20240226-en

Max time kernel

148s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b16bb2a4fe3ee1b986926530169eeb44_JaffaCakes118.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\b16bb2a4fe3ee1b986926530169eeb44_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\b16bb2a4fe3ee1b986926530169eeb44_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\b16bb2a4fe3ee1b986926530169eeb44_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\b16bb2a4fe3ee1b986926530169eeb44_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5056 -ip 5056

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 5056 -s 1000

Network

Country Destination Domain Proto
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 99.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 209.143.182.52.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\nsf52E4.tmp\pibyjvpg.dll

MD5 7e38c9c4dae24727bfc89d6feba8cb3e
SHA1 53500d0d0b8921fe6690dbdd2009be6d9c06adc6
SHA256 087ed293380602e60c32df98be8412bd73d32beba232bc255a6fb3edf46134ff
SHA512 835412fa1c001a1ec811a51be9afc361cea9ec8db8a85912bf7007b20f74b338323b59ac637a1cfc9afebdf57c6a441680c0707d15c13c7560eaacc94a56a985

memory/5056-6-0x0000000074610000-0x000000007461B000-memory.dmp

memory/5056-9-0x0000000074610000-0x000000007461B000-memory.dmp