Malware Analysis Report

2024-10-19 10:27

Sample ID 240429-aygn9sda87
Target 066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118
SHA256 0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5
Tags
isrstealer stealer trojan collection upx
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

0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5

Threat Level: Known bad

The file 066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

isrstealer stealer trojan collection upx

ISR Stealer payload

ISR Stealer

NirSoft MailPassView

Nirsoft

Executes dropped EXE

Loads dropped DLL

UPX packed file

Accesses Microsoft Outlook accounts

Drops desktop.ini file(s)

Suspicious use of SetThreadContext

Drops file in Windows directory

Enumerates physical storage devices

Program crash

Unsigned PE

Suspicious use of WriteProcessMemory

NTFS ADS

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-29 00:37

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-29 00:37

Reported

2024-04-29 00:39

Platform

win7-20240221-en

Max time kernel

119s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_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

Executes dropped EXE

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2324 set thread context of 2744 N/A C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe

Enumerates physical storage devices

NTFS ADS

Description Indicator Process Target
File created C:\Users\Admin\AppData\Local\Temp\FolderN\name.exe:Zone.Identifier C:\Windows\SysWOW64\cmd.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2324 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 2324 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 2324 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 2324 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 2880 wrote to memory of 2540 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2880 wrote to memory of 2540 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2880 wrote to memory of 2540 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2880 wrote to memory of 2540 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 2324 wrote to memory of 2744 N/A C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 2324 wrote to memory of 2744 N/A C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 2324 wrote to memory of 2744 N/A C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 2324 wrote to memory of 2744 N/A C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 2324 wrote to memory of 2744 N/A C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 2324 wrote to memory of 2744 N/A C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 2324 wrote to memory of 2744 N/A C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 2324 wrote to memory of 2744 N/A C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe

Processes

C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe"

C:\Windows\SysWOW64\cmd.exe

"cmd.exe"

C:\Windows\SysWOW64\reg.exe

reg add "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Windows" /v Load /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\FolderN\name.exe.lnk" /f

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

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

Network

N/A

Files

memory/2324-1-0x00000000742D0000-0x000000007487B000-memory.dmp

memory/2324-0-0x00000000742D0000-0x000000007487B000-memory.dmp

memory/2324-2-0x0000000000150000-0x0000000000190000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\FolderN\name.exe

MD5 066d70aad37e93ff30dfea3cd49ccc79
SHA1 0de81c392d9eaa47c2a42e2ea8e0cc33519448b8
SHA256 0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5
SHA512 8d53f0c36c0207ac1cfffee70d6070a24d47bf5e7f5c93d1d21eb6a2f931b08c6680ecb78c4e3c47d5e35737d35363837942c9f42321693059dce84a0008e587

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

MD5 32827e69b293b99013bbbe37d029245d
SHA1 bc9f80a38f09354d71467a05b0c5a82c3f7dac53
SHA256 9250b89157770e3ab59a2c7e2dd6b12b3c61d9b7c6620c3b4727e4bfff10f01f
SHA512 58c9a072e2bea0a8f22b4e69512abafad271ca91f2e3d2b4233796dd3d83021aad1c6da69fc8f7e7ca7919d34bde941cb8b5d185b668168866d1180558b93cf5

memory/2744-15-0x0000000000080000-0x00000000000C2000-memory.dmp

memory/2744-16-0x0000000000080000-0x00000000000C2000-memory.dmp

memory/2744-13-0x0000000000080000-0x00000000000C2000-memory.dmp

memory/2744-20-0x0000000000080000-0x00000000000C2000-memory.dmp

memory/2744-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2324-22-0x00000000742D0000-0x000000007487B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-29 00:37

Reported

2024-04-29 00:39

Platform

win10v2004-20240419-en

Max time kernel

66s

Max time network

51s

Command Line

"C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_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

NirSoft MailPassView

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

Nirsoft

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\svhost.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\svhost.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\svhost.exe N/A

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

Accesses Microsoft Outlook accounts

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2818691465-3043947619-2475182763-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts C:\Users\Admin\AppData\Local\Temp\svhost.exe N/A

Drops desktop.ini file(s)

Description Indicator Process Target
File opened for modification C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe N/A
File created C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\assembly C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe N/A
File created C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe N/A
File opened for modification C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe N/A

Enumerates physical storage devices

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe

NTFS ADS

Description Indicator Process Target
File created C:\Users\Admin\AppData\Local\Temp\FolderN\name.exe:Zone.Identifier C:\Windows\SysWOW64\cmd.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe N/A

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4244 wrote to memory of 1512 N/A C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 4244 wrote to memory of 1512 N/A C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 4244 wrote to memory of 1512 N/A C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe C:\Windows\SysWOW64\cmd.exe
PID 1512 wrote to memory of 3928 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 1512 wrote to memory of 3928 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 1512 wrote to memory of 3928 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\reg.exe
PID 4244 wrote to memory of 5072 N/A C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 4244 wrote to memory of 5072 N/A C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 4244 wrote to memory of 5072 N/A C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 4244 wrote to memory of 5072 N/A C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 4244 wrote to memory of 5072 N/A C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 4244 wrote to memory of 5072 N/A C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 4244 wrote to memory of 5072 N/A C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 5072 wrote to memory of 884 N/A C:\Users\Admin\AppData\Local\Temp\svhost.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 5072 wrote to memory of 884 N/A C:\Users\Admin\AppData\Local\Temp\svhost.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 5072 wrote to memory of 884 N/A C:\Users\Admin\AppData\Local\Temp\svhost.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 5072 wrote to memory of 884 N/A C:\Users\Admin\AppData\Local\Temp\svhost.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 5072 wrote to memory of 884 N/A C:\Users\Admin\AppData\Local\Temp\svhost.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 5072 wrote to memory of 884 N/A C:\Users\Admin\AppData\Local\Temp\svhost.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 5072 wrote to memory of 884 N/A C:\Users\Admin\AppData\Local\Temp\svhost.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 5072 wrote to memory of 884 N/A C:\Users\Admin\AppData\Local\Temp\svhost.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 5072 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\svhost.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 5072 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\svhost.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 5072 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\svhost.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 5072 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\svhost.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 5072 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\svhost.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 5072 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\svhost.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 5072 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\svhost.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe
PID 5072 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\svhost.exe C:\Users\Admin\AppData\Local\Temp\svhost.exe

Processes

C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe"

C:\Windows\SysWOW64\cmd.exe

"cmd.exe"

C:\Windows\SysWOW64\reg.exe

reg add "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Windows" /v Load /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\FolderN\name.exe.lnk" /f

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

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

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

/scomma "C:\Users\Admin\AppData\Local\Temp\gnlRH2AzYg.ini"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 884 -ip 884

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 884 -s 80

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

/scomma "C:\Users\Admin\AppData\Local\Temp\qpn23Ei3rR.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 g.bing.com udp
US 8.8.8.8:53 g.bing.com udp

Files

memory/4244-0-0x0000000074630000-0x0000000074BE1000-memory.dmp

memory/4244-1-0x0000000074630000-0x0000000074BE1000-memory.dmp

memory/4244-2-0x00000000019C0000-0x00000000019D0000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\FolderN\name.exe.jpg

MD5 066d70aad37e93ff30dfea3cd49ccc79
SHA1 0de81c392d9eaa47c2a42e2ea8e0cc33519448b8
SHA256 0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5
SHA512 8d53f0c36c0207ac1cfffee70d6070a24d47bf5e7f5c93d1d21eb6a2f931b08c6680ecb78c4e3c47d5e35737d35363837942c9f42321693059dce84a0008e587

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

MD5 1c9ff7df71493896054a91bee0322ebf
SHA1 38f1c85965d58b910d8e8381b6b1099d5dfcbfe4
SHA256 e8b5da3394bbdd7868122ffd88d9d06afe31bd69d656857910d2f820c32d0efa
SHA512 aa0def62b663743e6c3c022182b35cff33cb9abf08453d5098f3c5d32b2a8b0cd1cc5de64b93e39680c1d1396fef1fd50b642ca3ea4ba1f6d1078321d96916ab

memory/5072-13-0x0000000000400000-0x0000000000442000-memory.dmp

memory/5072-17-0x0000000000400000-0x0000000000442000-memory.dmp

memory/5072-22-0x0000000000400000-0x0000000000442000-memory.dmp

memory/2648-23-0x0000000000400000-0x000000000041F000-memory.dmp

memory/2648-26-0x0000000000400000-0x000000000041F000-memory.dmp

memory/2648-27-0x0000000000400000-0x000000000041F000-memory.dmp

memory/2648-28-0x0000000000400000-0x000000000041F000-memory.dmp

memory/2648-29-0x0000000000400000-0x000000000041F000-memory.dmp

memory/5072-30-0x0000000000400000-0x0000000000442000-memory.dmp

memory/4244-32-0x0000000074630000-0x0000000074BE1000-memory.dmp