isrstealer | 9389c83538a42e9338c2eb00d46f349e48f825927bff1c21dcdc0eeaef486ed9

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
03-07-2024 19:43

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General

Target

2388afa092d38150f865c7f2ad428f1a_JaffaCakes118.exe
Size

227KB
MD5

2388afa092d38150f865c7f2ad428f1a
SHA1

5eea89dc6436292f1b2dcfc84e8316a9afa6acc7
SHA256

9389c83538a42e9338c2eb00d46f349e48f825927bff1c21dcdc0eeaef486ed9
SHA512

ec1378f0230dacd18a62f17e132caabd1ff0f469fbd0ade53c3ebefbb8051e89806a7bcafa26924789df7e778e882290bfc694320cab6af8617011d725b55120
SSDEEP

3072:+Ida9stIsq3g8vz+KBAis7aMztIFr3HBpYU5jOJZ70DE2GF8NKU9ILswqG:dYsoqaS7fzKFr3HBaU5yZ7/2zNKUmsw

Score

10^/10

isrstealer stealer trojan

Malware Config

Signatures

ISR Stealer
ISR Stealer is a modified version of Hackhound Stealer written in visual basic.
trojan stealer isrstealer

ISR Stealer payload 3 IoCs

resource	yara_rule
behavioral2/memory/2672-3-0x0000000000400000-0x0000000000412000-memory.dmp	family_isrstealer
behavioral2/memory/2672-5-0x0000000000400000-0x0000000000412000-memory.dmp	family_isrstealer
behavioral2/memory/2672-9-0x0000000000400000-0x0000000000412000-memory.dmp	family_isrstealer

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1188 set thread context of 2672	1188	2388afa092d38150f865c7f2ad428f1a_JaffaCakes118.exe	82

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1188	2388afa092d38150f865c7f2ad428f1a_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1188	2388afa092d38150f865c7f2ad428f1a_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2672	vbc.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1188 wrote to memory of 2672	1188	2388afa092d38150f865c7f2ad428f1a_JaffaCakes118.exe	82
PID 1188 wrote to memory of 2672	1188	2388afa092d38150f865c7f2ad428f1a_JaffaCakes118.exe	82
PID 1188 wrote to memory of 2672	1188	2388afa092d38150f865c7f2ad428f1a_JaffaCakes118.exe	82
PID 1188 wrote to memory of 2672	1188	2388afa092d38150f865c7f2ad428f1a_JaffaCakes118.exe	82
PID 1188 wrote to memory of 2672	1188	2388afa092d38150f865c7f2ad428f1a_JaffaCakes118.exe	82
PID 1188 wrote to memory of 2672	1188	2388afa092d38150f865c7f2ad428f1a_JaffaCakes118.exe	82
PID 1188 wrote to memory of 2672	1188	2388afa092d38150f865c7f2ad428f1a_JaffaCakes118.exe	82
PID 1188 wrote to memory of 2672	1188	2388afa092d38150f865c7f2ad428f1a_JaffaCakes118.exe	82

C:\Users\Admin\AppData\Local\Temp\2388afa092d38150f865c7f2ad428f1a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\2388afa092d38150f865c7f2ad428f1a_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1188
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:2672

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scripting

T1064

Persistence

Privilege Escalation

Defense Evasion

Scripting

T1064

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1188-0-0x0000000074FE2000-0x0000000074FE3000-memory.dmp

Filesize
4KB

Download
memory/1188-1-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/1188-2-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/1188-11-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/2672-3-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2672-5-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2672-9-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download