isrstealer | 9389c83538a42e9338c2eb00d46f349e48f825927bff1c21dcdc0eeaef486ed9

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-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
behavioral1/memory/3024-10-0x0000000000400000-0x0000000000412000-memory.dmp	family_isrstealer
behavioral1/memory/3024-8-0x0000000000400000-0x0000000000412000-memory.dmp	family_isrstealer
behavioral1/memory/3024-3-0x0000000000400000-0x0000000000412000-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 2924 set thread context of 3024	2924	2388afa092d38150f865c7f2ad428f1a_JaffaCakes118.exe	28

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2924	2388afa092d38150f865c7f2ad428f1a_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2924	2388afa092d38150f865c7f2ad428f1a_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3024	vbc.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2924 wrote to memory of 3024	2924	2388afa092d38150f865c7f2ad428f1a_JaffaCakes118.exe	28
PID 2924 wrote to memory of 3024	2924	2388afa092d38150f865c7f2ad428f1a_JaffaCakes118.exe	28
PID 2924 wrote to memory of 3024	2924	2388afa092d38150f865c7f2ad428f1a_JaffaCakes118.exe	28
PID 2924 wrote to memory of 3024	2924	2388afa092d38150f865c7f2ad428f1a_JaffaCakes118.exe	28
PID 2924 wrote to memory of 3024	2924	2388afa092d38150f865c7f2ad428f1a_JaffaCakes118.exe	28
PID 2924 wrote to memory of 3024	2924	2388afa092d38150f865c7f2ad428f1a_JaffaCakes118.exe	28
PID 2924 wrote to memory of 3024	2924	2388afa092d38150f865c7f2ad428f1a_JaffaCakes118.exe	28
PID 2924 wrote to memory of 3024	2924	2388afa092d38150f865c7f2ad428f1a_JaffaCakes118.exe	28
PID 2924 wrote to memory of 3024	2924	2388afa092d38150f865c7f2ad428f1a_JaffaCakes118.exe	28

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:2924
- 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:3024

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/2924-2-0x0000000074170000-0x000000007471B000-memory.dmp

Filesize
5.7MB

Download
memory/2924-1-0x0000000074170000-0x000000007471B000-memory.dmp

Filesize
5.7MB

Download
memory/2924-0-0x0000000074171000-0x0000000074172000-memory.dmp

Filesize
4KB

Download
memory/2924-11-0x0000000074170000-0x000000007471B000-memory.dmp

Filesize
5.7MB

Download
memory/3024-10-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/3024-8-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/3024-3-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download