isrstealer | cf7e2983b8fef5a9588080285389d57a5f6b738ca2f00639a8edebf2ee473835

Analysis

max time kernel
139s
max time network
127s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
23-07-2024 07:48

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General

Target

66b852a9c91b240e80f7e59bab108298_JaffaCakes118.exe
Size

247KB
MD5

66b852a9c91b240e80f7e59bab108298
SHA1

9accc7f379bf198237835fa7d58c299cee47f7cf
SHA256

cf7e2983b8fef5a9588080285389d57a5f6b738ca2f00639a8edebf2ee473835
SHA512

3e3b5623518101d49b41118cdcba2d694e8d73ff683adaf763372b1a4b29e9848ab5da1b5c1ec804bde61f195a1cca4e76c435a334619d88b56776b671f243c8
SSDEEP

3072:Y7tfvw/idrxY5reRd1sSPwD/lPALbIiuS:tiJxgeRd1sSPQiu

Score

10^/10

isrstealer persistence 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

Processes:

resource	yara_rule
behavioral2/memory/3324-4-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral2/memory/3324-7-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral2/memory/3324-12-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

66b852a9c91b240e80f7e59bab108298_JaffaCakes118.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-384068567-2943195810-3631207890-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Java Update = "C:\\Users\\Admin\\AppData\\Local\\Temp\\LgGLITWlHIRbWzPiCV.exe"	66b852a9c91b240e80f7e59bab108298_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

66b852a9c91b240e80f7e59bab108298_JaffaCakes118.exe

description pid process target process

PID 1196 set thread context of 3324 1196 66b852a9c91b240e80f7e59bab108298_JaffaCakes118.exe vbc.exe
Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

vbc.exe

pid process

3324 vbc.exe
3324 vbc.exe
3324 vbc.exe
3324 vbc.exe
3324 vbc.exe
3324 vbc.exe
3324 vbc.exe
3324 vbc.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

vbc.exe

pid process

3324 vbc.exe

description	pid	process	target process
PID 1196 set thread context of 3324	1196	66b852a9c91b240e80f7e59bab108298_JaffaCakes118.exe	vbc.exe

pid	process
3324	vbc.exe
3324	vbc.exe
3324	vbc.exe
3324	vbc.exe
3324	vbc.exe
3324	vbc.exe
3324	vbc.exe
3324	vbc.exe

pid	process
3324	vbc.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

66b852a9c91b240e80f7e59bab108298_JaffaCakes118.exe

description	pid	process	target process
PID 1196 wrote to memory of 3324	1196	66b852a9c91b240e80f7e59bab108298_JaffaCakes118.exe	vbc.exe
PID 1196 wrote to memory of 3324	1196	66b852a9c91b240e80f7e59bab108298_JaffaCakes118.exe	vbc.exe
PID 1196 wrote to memory of 3324	1196	66b852a9c91b240e80f7e59bab108298_JaffaCakes118.exe	vbc.exe
PID 1196 wrote to memory of 3324	1196	66b852a9c91b240e80f7e59bab108298_JaffaCakes118.exe	vbc.exe
PID 1196 wrote to memory of 3324	1196	66b852a9c91b240e80f7e59bab108298_JaffaCakes118.exe	vbc.exe
PID 1196 wrote to memory of 3324	1196	66b852a9c91b240e80f7e59bab108298_JaffaCakes118.exe	vbc.exe
PID 1196 wrote to memory of 3324	1196	66b852a9c91b240e80f7e59bab108298_JaffaCakes118.exe	vbc.exe
PID 1196 wrote to memory of 3324	1196	66b852a9c91b240e80f7e59bab108298_JaffaCakes118.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\66b852a9c91b240e80f7e59bab108298_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\66b852a9c91b240e80f7e59bab108298_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1196
- C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:3324

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scripting

T1064

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Scripting

T1064

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1196-0-0x0000000074DD2000-0x0000000074DD3000-memory.dmp

Filesize
4KB

Download
memory/1196-1-0x0000000074DD0000-0x0000000075381000-memory.dmp

Filesize
5.7MB

Download
memory/1196-2-0x0000000074DD0000-0x0000000075381000-memory.dmp

Filesize
5.7MB

Download
memory/1196-10-0x0000000074DD0000-0x0000000075381000-memory.dmp

Filesize
5.7MB

Download
memory/3324-4-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3324-7-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3324-12-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3324-11-0x0000000000420000-0x00000000004E9000-memory.dmp

Filesize
804KB

Download