isrstealer | c45258fce9aa3ca55e4c3cefeca6c4b6a7d03ef53be0da688a2e54b642562735

Analysis

max time kernel
121s
max time network
125s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
19/10/2024, 02:02

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General

Target

5a515fb7d8ddc91230940f85120f9ff3_JaffaCakes118.exe
Size

468KB
MD5

5a515fb7d8ddc91230940f85120f9ff3
SHA1

a62d7292a968bdc478aed3f700fded2b58a25deb
SHA256

c45258fce9aa3ca55e4c3cefeca6c4b6a7d03ef53be0da688a2e54b642562735
SHA512

147464ddb8b2691a124f75690478e4027eaaf432d00c569a3d36fc6b910144ebbf1f784458784ed0caf54e044c3d6c2aa400ff1202a0e3a5c0bdcd5fbf6b05c2
SSDEEP

6144:79d2d8lEkce/IBpoaK7IapsCrY+JkUJ9vICA+JzRbKdMhA6ziHberIrVmce:pdJlU8IUZIaL3kUfA+1RedCi4iVje

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
behavioral1/memory/2636-5-0x0000000000400000-0x0000000000476000-memory.dmp	family_isrstealer

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2856	1996	WerFault.exe	30

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	5a515fb7d8ddc91230940f85120f9ff3_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1996	5a515fb7d8ddc91230940f85120f9ff3_JaffaCakes118.exe
1996	5a515fb7d8ddc91230940f85120f9ff3_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1996 wrote to memory of 2636	1996	5a515fb7d8ddc91230940f85120f9ff3_JaffaCakes118.exe	31
PID 1996 wrote to memory of 2636	1996	5a515fb7d8ddc91230940f85120f9ff3_JaffaCakes118.exe	31
PID 1996 wrote to memory of 2636	1996	5a515fb7d8ddc91230940f85120f9ff3_JaffaCakes118.exe	31
PID 1996 wrote to memory of 2636	1996	5a515fb7d8ddc91230940f85120f9ff3_JaffaCakes118.exe	31
PID 1996 wrote to memory of 2636	1996	5a515fb7d8ddc91230940f85120f9ff3_JaffaCakes118.exe	31
PID 1996 wrote to memory of 2636	1996	5a515fb7d8ddc91230940f85120f9ff3_JaffaCakes118.exe	31
PID 1996 wrote to memory of 2636	1996	5a515fb7d8ddc91230940f85120f9ff3_JaffaCakes118.exe	31
PID 1996 wrote to memory of 2636	1996	5a515fb7d8ddc91230940f85120f9ff3_JaffaCakes118.exe	31
PID 1996 wrote to memory of 2856	1996	5a515fb7d8ddc91230940f85120f9ff3_JaffaCakes118.exe	32
PID 1996 wrote to memory of 2856	1996	5a515fb7d8ddc91230940f85120f9ff3_JaffaCakes118.exe	32
PID 1996 wrote to memory of 2856	1996	5a515fb7d8ddc91230940f85120f9ff3_JaffaCakes118.exe	32
PID 1996 wrote to memory of 2856	1996	5a515fb7d8ddc91230940f85120f9ff3_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\5a515fb7d8ddc91230940f85120f9ff3_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\5a515fb7d8ddc91230940f85120f9ff3_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1996
- C:\Users\Admin\AppData\Local\Temp\5a515fb7d8ddc91230940f85120f9ff3_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\5a515fb7d8ddc91230940f85120f9ff3_JaffaCakes118.exe"
  2⤵
  PID:2636
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1996 -s 180
  2⤵
  - Program crash
  PID:2856

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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/1996-0-0x0000000000401000-0x0000000000404000-memory.dmp

Filesize
12KB

Download
memory/1996-9-0x0000000000401000-0x0000000000404000-memory.dmp

Filesize
12KB

Download
memory/2636-1-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/2636-7-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2636-5-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/2636-3-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download