Malware Analysis Report

2024-10-19 10:27

Sample ID 240626-rdywgsxgmc
Target 123ead4a0cba2ca67d621f835011e12f_JaffaCakes118
SHA256 9514c96ca877e13960c07ba58f54091df835f1f5b4135c16f9dc4cd78928c85c
Tags
isrstealer spyware stealer trojan upx
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

9514c96ca877e13960c07ba58f54091df835f1f5b4135c16f9dc4cd78928c85c

Threat Level: Known bad

The file 123ead4a0cba2ca67d621f835011e12f_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

isrstealer spyware stealer trojan upx

ISR Stealer payload

ISR Stealer

UPX packed file

Uses the VBS compiler for execution

Loads dropped DLL

Executes dropped EXE

Reads user/profile data of web browsers

Suspicious use of SetThreadContext

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-26 14:05

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-26 14:05

Reported

2024-06-26 14:07

Platform

win10v2004-20240611-en

Max time kernel

150s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe"

Signatures

ISR Stealer

trojan stealer isrstealer

ISR Stealer payload

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

Executes dropped EXE

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

Reads user/profile data of web browsers

spyware stealer

UPX packed file

upx
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

Uses the VBS compiler for execution

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2484 set thread context of 2312 N/A C:\Users\Admin\AppData\Local\Temp\123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 2312 set thread context of 4804 N/A C:\Users\Admin\AppData\Local\Temp\vbc.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe N/A

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2484 wrote to memory of 2312 N/A C:\Users\Admin\AppData\Local\Temp\123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 2484 wrote to memory of 2312 N/A C:\Users\Admin\AppData\Local\Temp\123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 2484 wrote to memory of 2312 N/A C:\Users\Admin\AppData\Local\Temp\123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 2484 wrote to memory of 2312 N/A C:\Users\Admin\AppData\Local\Temp\123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 2484 wrote to memory of 2312 N/A C:\Users\Admin\AppData\Local\Temp\123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 2484 wrote to memory of 2312 N/A C:\Users\Admin\AppData\Local\Temp\123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 2484 wrote to memory of 2312 N/A C:\Users\Admin\AppData\Local\Temp\123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 2484 wrote to memory of 2312 N/A C:\Users\Admin\AppData\Local\Temp\123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 2312 wrote to memory of 4804 N/A C:\Users\Admin\AppData\Local\Temp\vbc.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 2312 wrote to memory of 4804 N/A C:\Users\Admin\AppData\Local\Temp\vbc.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 2312 wrote to memory of 4804 N/A C:\Users\Admin\AppData\Local\Temp\vbc.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 2312 wrote to memory of 4804 N/A C:\Users\Admin\AppData\Local\Temp\vbc.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 2312 wrote to memory of 4804 N/A C:\Users\Admin\AppData\Local\Temp\vbc.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 2312 wrote to memory of 4804 N/A C:\Users\Admin\AppData\Local\Temp\vbc.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 2312 wrote to memory of 4804 N/A C:\Users\Admin\AppData\Local\Temp\vbc.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 2312 wrote to memory of 4804 N/A C:\Users\Admin\AppData\Local\Temp\vbc.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe

Processes

C:\Users\Admin\AppData\Local\Temp\123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe"

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

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

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

/scomma "C:\Users\Admin\AppData\Local\Temp\Ft4h1MYkW6.ini"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 23.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 prisonlife.eshost.es udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 92.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/2484-0-0x0000000075392000-0x0000000075393000-memory.dmp

memory/2484-1-0x0000000075390000-0x0000000075941000-memory.dmp

memory/2484-2-0x0000000075390000-0x0000000075941000-memory.dmp

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

MD5 d881de17aa8f2e2c08cbb7b265f928f9
SHA1 08936aebc87decf0af6e8eada191062b5e65ac2a
SHA256 b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0
SHA512 5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

memory/2312-5-0x0000000000400000-0x0000000000435000-memory.dmp

memory/2312-10-0x0000000000400000-0x0000000000435000-memory.dmp

memory/4804-17-0x0000000000400000-0x0000000000453000-memory.dmp

memory/4804-16-0x0000000000400000-0x0000000000453000-memory.dmp

memory/4804-21-0x0000000000400000-0x0000000000453000-memory.dmp

memory/4804-20-0x0000000000400000-0x0000000000453000-memory.dmp

memory/4804-13-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2484-23-0x0000000075390000-0x0000000075941000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\Ft4h1MYkW6.ini

MD5 d1ea279fb5559c020a1b4137dc4de237
SHA1 db6f8988af46b56216a6f0daf95ab8c9bdb57400
SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
SHA512 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

memory/2312-25-0x0000000000440000-0x0000000000509000-memory.dmp

memory/2312-27-0x0000000000400000-0x0000000000435000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-26 14:05

Reported

2024-06-26 14:07

Platform

win7-20240221-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe"

Signatures

ISR Stealer

trojan stealer isrstealer

ISR Stealer payload

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

Executes dropped EXE

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

Reads user/profile data of web browsers

spyware stealer

UPX packed file

upx
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
N/A N/A N/A N/A

Uses the VBS compiler for execution

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2180 set thread context of 3024 N/A C:\Users\Admin\AppData\Local\Temp\123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 3024 set thread context of 2408 N/A C:\Users\Admin\AppData\Local\Temp\vbc.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe N/A

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2180 wrote to memory of 3024 N/A C:\Users\Admin\AppData\Local\Temp\123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 2180 wrote to memory of 3024 N/A C:\Users\Admin\AppData\Local\Temp\123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 2180 wrote to memory of 3024 N/A C:\Users\Admin\AppData\Local\Temp\123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 2180 wrote to memory of 3024 N/A C:\Users\Admin\AppData\Local\Temp\123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 2180 wrote to memory of 3024 N/A C:\Users\Admin\AppData\Local\Temp\123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 2180 wrote to memory of 3024 N/A C:\Users\Admin\AppData\Local\Temp\123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 2180 wrote to memory of 3024 N/A C:\Users\Admin\AppData\Local\Temp\123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 2180 wrote to memory of 3024 N/A C:\Users\Admin\AppData\Local\Temp\123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 3024 wrote to memory of 2408 N/A C:\Users\Admin\AppData\Local\Temp\vbc.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 3024 wrote to memory of 2408 N/A C:\Users\Admin\AppData\Local\Temp\vbc.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 3024 wrote to memory of 2408 N/A C:\Users\Admin\AppData\Local\Temp\vbc.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 3024 wrote to memory of 2408 N/A C:\Users\Admin\AppData\Local\Temp\vbc.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 3024 wrote to memory of 2408 N/A C:\Users\Admin\AppData\Local\Temp\vbc.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 3024 wrote to memory of 2408 N/A C:\Users\Admin\AppData\Local\Temp\vbc.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 3024 wrote to memory of 2408 N/A C:\Users\Admin\AppData\Local\Temp\vbc.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 3024 wrote to memory of 2408 N/A C:\Users\Admin\AppData\Local\Temp\vbc.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe
PID 3024 wrote to memory of 2408 N/A C:\Users\Admin\AppData\Local\Temp\vbc.exe C:\Users\Admin\AppData\Local\Temp\vbc.exe

Processes

C:\Users\Admin\AppData\Local\Temp\123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe"

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

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

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

/scomma "C:\Users\Admin\AppData\Local\Temp\CFRHC112b2.ini"

Network

N/A

Files

memory/2180-0-0x0000000074B71000-0x0000000074B72000-memory.dmp

memory/2180-1-0x0000000074B70000-0x000000007511B000-memory.dmp

memory/2180-2-0x0000000074B70000-0x000000007511B000-memory.dmp

\Users\Admin\AppData\Local\Temp\vbc.exe

MD5 34aa912defa18c2c129f1e09d75c1d7e
SHA1 9c3046324657505a30ecd9b1fdb46c05bde7d470
SHA256 6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386
SHA512 d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

memory/3024-9-0x0000000000400000-0x0000000000435000-memory.dmp

memory/3024-15-0x0000000000400000-0x0000000000435000-memory.dmp

memory/3024-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/3024-11-0x0000000000400000-0x0000000000435000-memory.dmp

memory/3024-7-0x0000000000400000-0x0000000000435000-memory.dmp

memory/2180-18-0x0000000074B70000-0x000000007511B000-memory.dmp

memory/3024-24-0x0000000000400000-0x0000000000435000-memory.dmp

memory/2408-28-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2408-29-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2408-30-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2408-31-0x0000000000400000-0x0000000000453000-memory.dmp

memory/2408-25-0x0000000000400000-0x0000000000453000-memory.dmp

memory/3024-33-0x0000000000400000-0x0000000000435000-memory.dmp

memory/2408-36-0x0000000000400000-0x0000000000453000-memory.dmp