Malware Analysis Report

2025-01-18 12:41

Sample ID 240403-f8s3yahc7t
Target a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118
SHA256 d7fa1327e8e502c0658dc031eac50affd1a40ec45aee6c0110d61d0ebe9744a5
Tags
formbook rf3t 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 Overview

score
10/10

SHA256

d7fa1327e8e502c0658dc031eac50affd1a40ec45aee6c0110d61d0ebe9744a5

Threat Level: Known bad

The file a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

formbook rf3t rat spyware stealer trojan

Formbook

Formbook payload

Checks computer location settings

Suspicious use of SetThreadContext

Enumerates physical storage devices

Unsigned PE

Creates scheduled task(s)

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-03 05:32

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-03 05:32

Reported

2024-04-03 05:35

Platform

win7-20240319-en

Max time kernel

120s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe"

Signatures

Formbook

trojan spyware stealer formbook

Formbook payload

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

Enumerates physical storage devices

Creates scheduled task(s)

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2348 wrote to memory of 2664 N/A C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 2348 wrote to memory of 2664 N/A C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 2348 wrote to memory of 2664 N/A C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 2348 wrote to memory of 2664 N/A C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 2348 wrote to memory of 2552 N/A C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe
PID 2348 wrote to memory of 2552 N/A C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe
PID 2348 wrote to memory of 2552 N/A C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe
PID 2348 wrote to memory of 2552 N/A C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe
PID 2348 wrote to memory of 2552 N/A C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe
PID 2348 wrote to memory of 2552 N/A C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe
PID 2348 wrote to memory of 2552 N/A C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe"

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\VKyccEisJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAE49.tmp"

C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe

"{path}"

Network

N/A

Files

memory/2348-0-0x0000000000DE0000-0x0000000000ED2000-memory.dmp

memory/2348-1-0x00000000749E0000-0x00000000750CE000-memory.dmp

memory/2348-2-0x0000000004E10000-0x0000000004E50000-memory.dmp

memory/2348-3-0x00000000004F0000-0x0000000000504000-memory.dmp

memory/2348-4-0x00000000749E0000-0x00000000750CE000-memory.dmp

memory/2348-5-0x0000000004E10000-0x0000000004E50000-memory.dmp

memory/2348-6-0x0000000005A20000-0x0000000005AC4000-memory.dmp

memory/2348-7-0x0000000004900000-0x0000000004956000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmpAE49.tmp

MD5 e7f257a54ac969b278c1f5a38462c2c2
SHA1 95c897fe20965beb852af4cc567076de90e235e7
SHA256 6a72638a56ba5797cef38249193e24d5cce413e0c7e0128c76efc1116fb0f42a
SHA512 d6291da4509b4333ad1cdfa62fcb4f62d5c631f23ac841afc48265e9a993c36baf118ec95167887a34566eb462c83c16579d70110885c1b10ece07df9dc3c139

memory/2552-11-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2552-13-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2552-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2552-17-0x0000000000400000-0x000000000042F000-memory.dmp

memory/2552-18-0x0000000000860000-0x0000000000B63000-memory.dmp

memory/2348-19-0x00000000749E0000-0x00000000750CE000-memory.dmp

memory/2552-20-0x0000000000860000-0x0000000000B63000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-03 05:32

Reported

2024-04-03 05:35

Platform

win10v2004-20240226-en

Max time kernel

142s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe"

Signatures

Formbook

trojan spyware stealer formbook

Formbook payload

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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe N/A

Enumerates physical storage devices

Creates scheduled task(s)

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3656 wrote to memory of 980 N/A C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 3656 wrote to memory of 980 N/A C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 3656 wrote to memory of 980 N/A C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe C:\Windows\SysWOW64\schtasks.exe
PID 3656 wrote to memory of 4428 N/A C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe
PID 3656 wrote to memory of 4428 N/A C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe
PID 3656 wrote to memory of 4428 N/A C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe
PID 3656 wrote to memory of 5008 N/A C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe
PID 3656 wrote to memory of 5008 N/A C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe
PID 3656 wrote to memory of 5008 N/A C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe
PID 3656 wrote to memory of 1536 N/A C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe
PID 3656 wrote to memory of 1536 N/A C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe
PID 3656 wrote to memory of 1536 N/A C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe
PID 3656 wrote to memory of 1536 N/A C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe
PID 3656 wrote to memory of 1536 N/A C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe
PID 3656 wrote to memory of 1536 N/A C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe"

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\VKyccEisJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp85D5.tmp"

C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe

"{path}"

C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe

"{path}"

C:\Users\Admin\AppData\Local\Temp\a172b261614d5d5d0513ecfa06bc5711_JaffaCakes118.exe

"{path}"

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=4064 --field-trial-handle=2356,i,13261194862334667799,7441241219475888176,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
GB 142.250.178.10:443 tcp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 202.110.86.104.in-addr.arpa udp
US 8.8.8.8:53 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
GB 23.44.234.16:80 tcp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 13.107.253.64:443 tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 81.171.91.138.in-addr.arpa udp
US 8.8.8.8:53 152.33.115.104.in-addr.arpa udp
US 8.8.8.8:53 79.121.231.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 25.173.189.20.in-addr.arpa udp

Files

memory/3656-0-0x00000000752D0000-0x0000000075A80000-memory.dmp

memory/3656-1-0x0000000000960000-0x0000000000A52000-memory.dmp

memory/3656-2-0x00000000053C0000-0x000000000545C000-memory.dmp

memory/3656-3-0x0000000005A80000-0x0000000006024000-memory.dmp

memory/3656-4-0x0000000005570000-0x0000000005602000-memory.dmp

memory/3656-5-0x0000000005790000-0x00000000057A0000-memory.dmp

memory/3656-6-0x00000000054A0000-0x00000000054AA000-memory.dmp

memory/3656-7-0x0000000005610000-0x0000000005666000-memory.dmp

memory/3656-8-0x0000000005510000-0x0000000005532000-memory.dmp

memory/3656-9-0x0000000004E40000-0x0000000004E54000-memory.dmp

memory/3656-10-0x00000000752D0000-0x0000000075A80000-memory.dmp

memory/3656-11-0x0000000005790000-0x00000000057A0000-memory.dmp

memory/3656-12-0x0000000007F50000-0x0000000007FF4000-memory.dmp

memory/3656-13-0x0000000006870000-0x00000000068C6000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp85D5.tmp

MD5 7bc8a8bb6b33f649ab3a673564d2df08
SHA1 0795794ddbb61dbeba87db39b80d72d10626da10
SHA256 29b3ce8753817f1c1dde4993e31cac3e0b39d0efe8019800fc9e97ec7b6d98b6
SHA512 f5b4a7a573d5249221a93f9fffb8fa61f9c48f25ab5a212a97b9eae5933aa12c3d15479915c25119a6be26a18bc0aca072cc61d10a2a666bee675049000fd996

memory/1536-17-0x0000000000400000-0x000000000042F000-memory.dmp

memory/3656-19-0x00000000752D0000-0x0000000075A80000-memory.dmp

memory/1536-20-0x0000000001680000-0x00000000019CA000-memory.dmp