Malware Analysis Report

2025-01-18 12:39

Sample ID 240404-w7wqfafe85
Target bfb2b5d00165cb4984c29c172e0dad8d_JaffaCakes118
SHA256 e6aaec2b958d4b734ff02c7c63b7e24a619eef826efb16b955ebe5306b9953aa
Tags
formbook rv9n 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

e6aaec2b958d4b734ff02c7c63b7e24a619eef826efb16b955ebe5306b9953aa

Threat Level: Known bad

The file bfb2b5d00165cb4984c29c172e0dad8d_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

formbook rv9n rat spyware stealer trojan

Formbook

Formbook payload

Loads dropped DLL

Suspicious use of SetThreadContext

Enumerates physical storage devices

Unsigned PE

NSIS installer

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-04 18:34

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

2024-04-04 18:34

Reported

2024-04-04 18:36

Platform

win7-20231129-en

Max time kernel

117s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\bfb2b5d00165cb4984c29c172e0dad8d_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\bfb2b5d00165cb4984c29c172e0dad8d_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\bfb2b5d00165cb4984c29c172e0dad8d_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2264 wrote to memory of 2180 N/A C:\Users\Admin\AppData\Local\Temp\bfb2b5d00165cb4984c29c172e0dad8d_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\bfb2b5d00165cb4984c29c172e0dad8d_JaffaCakes118.exe
PID 2264 wrote to memory of 2180 N/A C:\Users\Admin\AppData\Local\Temp\bfb2b5d00165cb4984c29c172e0dad8d_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\bfb2b5d00165cb4984c29c172e0dad8d_JaffaCakes118.exe
PID 2264 wrote to memory of 2180 N/A C:\Users\Admin\AppData\Local\Temp\bfb2b5d00165cb4984c29c172e0dad8d_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\bfb2b5d00165cb4984c29c172e0dad8d_JaffaCakes118.exe
PID 2264 wrote to memory of 2180 N/A C:\Users\Admin\AppData\Local\Temp\bfb2b5d00165cb4984c29c172e0dad8d_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\bfb2b5d00165cb4984c29c172e0dad8d_JaffaCakes118.exe
PID 2264 wrote to memory of 2180 N/A C:\Users\Admin\AppData\Local\Temp\bfb2b5d00165cb4984c29c172e0dad8d_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\bfb2b5d00165cb4984c29c172e0dad8d_JaffaCakes118.exe
PID 2264 wrote to memory of 2180 N/A C:\Users\Admin\AppData\Local\Temp\bfb2b5d00165cb4984c29c172e0dad8d_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\bfb2b5d00165cb4984c29c172e0dad8d_JaffaCakes118.exe
PID 2264 wrote to memory of 2180 N/A C:\Users\Admin\AppData\Local\Temp\bfb2b5d00165cb4984c29c172e0dad8d_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\bfb2b5d00165cb4984c29c172e0dad8d_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\bfb2b5d00165cb4984c29c172e0dad8d_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\bfb2b5d00165cb4984c29c172e0dad8d_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\bfb2b5d00165cb4984c29c172e0dad8d_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\bfb2b5d00165cb4984c29c172e0dad8d_JaffaCakes118.exe"

Network

N/A

Files

\Users\Admin\AppData\Local\Temp\nstFAD4.tmp\irjzbmbgo.dll

MD5 3525f0279729cb34e886c8a83b5ce9c8
SHA1 b6edfeff839616e0155026cabed1e48de96a9063
SHA256 082c9b72407d063bb96c2830bcaf5f285d2d616e8a8d729a52b39ccbd30b8211
SHA512 2c74fc1a977204adb58a1af19850fa705716ca5c9b1d42f2b0d84dfe14a2e5c6af5f9e158b4cc132c1874de3b67cdd422cfc00e0dad63982718d5d0ce5f31f55

memory/2264-7-0x0000000074830000-0x000000007483B000-memory.dmp

memory/2180-9-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2264-10-0x0000000074830000-0x000000007483B000-memory.dmp

memory/2180-13-0x00000000006F0000-0x00000000009F3000-memory.dmp

memory/2180-14-0x00000000006F0000-0x00000000009F3000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-04 18:34

Reported

2024-04-04 18:37

Platform

win10v2004-20240226-en

Max time kernel

120s

Max time network

157s

Command Line

"C:\Users\Admin\AppData\Local\Temp\bfb2b5d00165cb4984c29c172e0dad8d_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\bfb2b5d00165cb4984c29c172e0dad8d_JaffaCakes118.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\bfb2b5d00165cb4984c29c172e0dad8d_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\bfb2b5d00165cb4984c29c172e0dad8d_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\bfb2b5d00165cb4984c29c172e0dad8d_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\bfb2b5d00165cb4984c29c172e0dad8d_JaffaCakes118.exe"

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=5092 --field-trial-handle=3084,i,11997299123381683778,5904351605020331957,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 227.66.18.2.in-addr.arpa udp
US 8.8.8.8:53 68.32.126.40.in-addr.arpa udp
NL 52.142.223.178:80 tcp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 41.110.86.104.in-addr.arpa udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
GB 216.58.212.202:443 chromewebstore.googleapis.com tcp
US 8.8.8.8:53 202.212.58.216.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\nsa8761.tmp\irjzbmbgo.dll

MD5 3525f0279729cb34e886c8a83b5ce9c8
SHA1 b6edfeff839616e0155026cabed1e48de96a9063
SHA256 082c9b72407d063bb96c2830bcaf5f285d2d616e8a8d729a52b39ccbd30b8211
SHA512 2c74fc1a977204adb58a1af19850fa705716ca5c9b1d42f2b0d84dfe14a2e5c6af5f9e158b4cc132c1874de3b67cdd422cfc00e0dad63982718d5d0ce5f31f55

memory/2664-5-0x0000000074410000-0x000000007441B000-memory.dmp

memory/1344-9-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2664-10-0x0000000074410000-0x000000007441B000-memory.dmp

memory/1344-11-0x0000000000A30000-0x0000000000D7A000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-04-04 18:34

Reported

2024-04-04 18:36

Platform

win7-20240221-en

Max time kernel

148s

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2228 set thread context of 2172 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2172 set thread context of 1204 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\Explorer.EXE
PID 1700 set thread context of 1204 N/A C:\Windows\SysWOW64\colorcpl.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\colorcpl.exe N/A
N/A N/A C:\Windows\SysWOW64\colorcpl.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\colorcpl.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2352 wrote to memory of 2228 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2352 wrote to memory of 2228 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2352 wrote to memory of 2228 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2352 wrote to memory of 2228 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2352 wrote to memory of 2228 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2352 wrote to memory of 2228 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2352 wrote to memory of 2228 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2228 wrote to memory of 2172 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2228 wrote to memory of 2172 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2228 wrote to memory of 2172 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2228 wrote to memory of 2172 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2228 wrote to memory of 2172 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2228 wrote to memory of 2172 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2228 wrote to memory of 2172 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2228 wrote to memory of 2172 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2228 wrote to memory of 2172 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2228 wrote to memory of 2172 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1204 wrote to memory of 1700 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\colorcpl.exe
PID 1204 wrote to memory of 1700 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\colorcpl.exe
PID 1204 wrote to memory of 1700 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\colorcpl.exe
PID 1204 wrote to memory of 1700 N/A C:\Windows\Explorer.EXE C:\Windows\SysWOW64\colorcpl.exe
PID 1700 wrote to memory of 2376 N/A C:\Windows\SysWOW64\colorcpl.exe C:\Windows\SysWOW64\cmd.exe
PID 1700 wrote to memory of 2376 N/A C:\Windows\SysWOW64\colorcpl.exe C:\Windows\SysWOW64\cmd.exe
PID 1700 wrote to memory of 2376 N/A C:\Windows\SysWOW64\colorcpl.exe C:\Windows\SysWOW64\cmd.exe
PID 1700 wrote to memory of 2376 N/A C:\Windows\SysWOW64\colorcpl.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\irjzbmbgo.dll,#1

C:\Windows\SysWOW64\rundll32.exe

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

C:\Windows\SysWOW64\rundll32.exe

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

C:\Windows\SysWOW64\colorcpl.exe

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

C:\Windows\SysWOW64\cmd.exe

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

Network

N/A

Files

memory/2228-0-0x0000000075410000-0x000000007541B000-memory.dmp

memory/2228-1-0x0000000075400000-0x000000007540B000-memory.dmp

memory/2228-2-0x0000000075410000-0x000000007541B000-memory.dmp

memory/2228-3-0x0000000075400000-0x000000007540B000-memory.dmp

memory/2172-4-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2228-6-0x0000000075400000-0x000000007540B000-memory.dmp

memory/2228-5-0x0000000075410000-0x000000007541B000-memory.dmp

memory/2172-8-0x00000000021E0000-0x00000000024E3000-memory.dmp

memory/1204-10-0x0000000003160000-0x0000000003260000-memory.dmp

memory/2172-11-0x00000000001A0000-0x00000000001B4000-memory.dmp

memory/2172-9-0x0000000000400000-0x000000000042F000-memory.dmp

memory/1204-12-0x0000000004D40000-0x0000000004E2C000-memory.dmp

memory/1700-13-0x00000000004E0000-0x00000000004F8000-memory.dmp

memory/1700-14-0x00000000004E0000-0x00000000004F8000-memory.dmp

memory/1700-15-0x0000000000080000-0x00000000000AF000-memory.dmp

memory/1700-16-0x0000000002430000-0x0000000002733000-memory.dmp

memory/1700-17-0x0000000000080000-0x00000000000AF000-memory.dmp

memory/1700-20-0x0000000001E00000-0x0000000001E93000-memory.dmp

memory/1204-21-0x0000000004D40000-0x0000000004E2C000-memory.dmp

Analysis: behavioral4

Detonation Overview

Submitted

2024-04-04 18:34

Reported

2024-04-04 18:36

Platform

win10v2004-20240226-en

Max time kernel

92s

Max time network

118s

Command Line

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

Signatures

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4680 wrote to memory of 648 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4680 wrote to memory of 648 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4680 wrote to memory of 648 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 648 wrote to memory of 4448 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 648 wrote to memory of 4448 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 648 wrote to memory of 4448 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\irjzbmbgo.dll,#1

C:\Windows\SysWOW64\rundll32.exe

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

C:\Windows\SysWOW64\rundll32.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 173.77.24.184.in-addr.arpa udp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 57.162.23.2.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.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 8.8.8.8:53 241.66.18.2.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 227.66.18.2.in-addr.arpa udp

Files

memory/648-0-0x0000000074930000-0x000000007493B000-memory.dmp

memory/648-1-0x0000000074930000-0x000000007493B000-memory.dmp