isrstealer | 11fdd2652e2b36df980e0ca3bc3416f62ef6096ed87d6f2d94bf78a3a4d0ab5d

Analysis

max time kernel
92s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
28/01/2025, 07:07

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General

Target

JaffaCakes118_482a4a14aa0ecf3db534b4f6e7991b46.exe
Size

432KB
MD5

482a4a14aa0ecf3db534b4f6e7991b46
SHA1

60da5b5530f8001e317660bc049ab061acc1af08
SHA256

11fdd2652e2b36df980e0ca3bc3416f62ef6096ed87d6f2d94bf78a3a4d0ab5d
SHA512

d6af301949b8f542748c02c7efca4ce34dd7ee7afdf1529ecac07eb402f5310e27061c7b9871fe6de9f229bcc6b0e62ab62f0624ee55eadb450c50236149f283
SSDEEP

6144:KIKQFmru0cdPj+13ndRRjrSBWTvOdzx1Xc1s83nlUJpn00D81L0Xmx/sMPfbVvlV:VLdPjwdT3SCu1MS8VO6/ZfJ97f1yqn

Score

10^/10

isrstealer discovery 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 1 IoCs

resource	yara_rule
behavioral2/memory/1044-6-0x000000001BED0000-0x000000001BF21000-memory.dmp	family_isrstealer

Isrstealer family
isrstealer
Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1044 wrote to memory of 1928	1044	JaffaCakes118_482a4a14aa0ecf3db534b4f6e7991b46.exe	82
PID 1044 wrote to memory of 1928	1044	JaffaCakes118_482a4a14aa0ecf3db534b4f6e7991b46.exe	82
PID 1044 wrote to memory of 1928	1044	JaffaCakes118_482a4a14aa0ecf3db534b4f6e7991b46.exe	82

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_482a4a14aa0ecf3db534b4f6e7991b46.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_482a4a14aa0ecf3db534b4f6e7991b46.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1044
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1928

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1044-0-0x00007FF82C225000-0x00007FF82C226000-memory.dmp

Filesize
4KB

Download
memory/1044-1-0x00007FF82BF70000-0x00007FF82C911000-memory.dmp

Filesize
9.6MB

Download
memory/1044-2-0x000000001B8C0000-0x000000001BD8E000-memory.dmp

Filesize
4.8MB

Download
memory/1044-3-0x000000001B2A0000-0x000000001B346000-memory.dmp

Filesize
664KB

Download
memory/1044-4-0x000000001B350000-0x000000001B3BC000-memory.dmp

Filesize
432KB

Download
memory/1044-5-0x00007FF82BF70000-0x00007FF82C911000-memory.dmp

Filesize
9.6MB

Download
memory/1044-6-0x000000001BED0000-0x000000001BF21000-memory.dmp

Filesize
324KB

Download
memory/1044-8-0x00007FF82BF70000-0x00007FF82C911000-memory.dmp

Filesize
9.6MB

Download