isrstealer | 6363779074e760b1ef9150fbe1976e6d10fe664c66b29f8a51fc9e0fc75a7307

General

Target

96098a82dbd191accb7d9d11d996995f_JaffaCakes118.exe
Size

388KB
MD5

96098a82dbd191accb7d9d11d996995f
SHA1

6d6f97bc89fece33dd3fe3ba48715d5b0aff2a53
SHA256

6363779074e760b1ef9150fbe1976e6d10fe664c66b29f8a51fc9e0fc75a7307
SHA512

20fc123f47b3cd2e9c92f7203dfa23ad0655874e2775778fc8414e4d8b211bb8179e18c551e6b41734e9f6d1c41b521b9899484225b2ac8524e0ee0a60bb5c67
SSDEEP

6144:08uYSU0iyeqKk9m8Y2S4jxM6xpe6pXJKUdtiyxMDH5WnyUF34Sc:VuY7gnPiyyDH5WnyGW

Score

10^/10

isrstealer credential_access discovery spyware stealer trojan upx

Malware Config

Signatures

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

ISR Stealer payload 2 IoCs

resource	yara_rule
behavioral1/memory/2128-2-0x0000000000400000-0x0000000000433000-memory.dmp	family_isrstealer
behavioral1/memory/2128-17-0x0000000000400000-0x0000000000433000-memory.dmp	family_isrstealer

Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2400-10-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2400-9-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2400-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2400-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2400-16-0x0000000000400000-0x0000000000453000-memory.dmp	upx

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1404 set thread context of 2128	1404	96098a82dbd191accb7d9d11d996995f_JaffaCakes118.exe	30
PID 2128 set thread context of 2400	2128	96098a82dbd191accb7d9d11d996995f_JaffaCakes118.exe	31

System Location Discovery: System Language Discovery 1 TTPs 3 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	96098a82dbd191accb7d9d11d996995f_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	96098a82dbd191accb7d9d11d996995f_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	96098a82dbd191accb7d9d11d996995f_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1404	96098a82dbd191accb7d9d11d996995f_JaffaCakes118.exe
2128	96098a82dbd191accb7d9d11d996995f_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1404 wrote to memory of 2128	1404	96098a82dbd191accb7d9d11d996995f_JaffaCakes118.exe	30
PID 1404 wrote to memory of 2128	1404	96098a82dbd191accb7d9d11d996995f_JaffaCakes118.exe	30
PID 1404 wrote to memory of 2128	1404	96098a82dbd191accb7d9d11d996995f_JaffaCakes118.exe	30
PID 1404 wrote to memory of 2128	1404	96098a82dbd191accb7d9d11d996995f_JaffaCakes118.exe	30
PID 1404 wrote to memory of 2128	1404	96098a82dbd191accb7d9d11d996995f_JaffaCakes118.exe	30
PID 1404 wrote to memory of 2128	1404	96098a82dbd191accb7d9d11d996995f_JaffaCakes118.exe	30
PID 1404 wrote to memory of 2128	1404	96098a82dbd191accb7d9d11d996995f_JaffaCakes118.exe	30
PID 1404 wrote to memory of 2128	1404	96098a82dbd191accb7d9d11d996995f_JaffaCakes118.exe	30
PID 1404 wrote to memory of 2128	1404	96098a82dbd191accb7d9d11d996995f_JaffaCakes118.exe	30
PID 2128 wrote to memory of 2400	2128	96098a82dbd191accb7d9d11d996995f_JaffaCakes118.exe	31
PID 2128 wrote to memory of 2400	2128	96098a82dbd191accb7d9d11d996995f_JaffaCakes118.exe	31
PID 2128 wrote to memory of 2400	2128	96098a82dbd191accb7d9d11d996995f_JaffaCakes118.exe	31
PID 2128 wrote to memory of 2400	2128	96098a82dbd191accb7d9d11d996995f_JaffaCakes118.exe	31
PID 2128 wrote to memory of 2400	2128	96098a82dbd191accb7d9d11d996995f_JaffaCakes118.exe	31
PID 2128 wrote to memory of 2400	2128	96098a82dbd191accb7d9d11d996995f_JaffaCakes118.exe	31
PID 2128 wrote to memory of 2400	2128	96098a82dbd191accb7d9d11d996995f_JaffaCakes118.exe	31
PID 2128 wrote to memory of 2400	2128	96098a82dbd191accb7d9d11d996995f_JaffaCakes118.exe	31
PID 2128 wrote to memory of 2400	2128	96098a82dbd191accb7d9d11d996995f_JaffaCakes118.exe	31

C:\Users\Admin\AppData\Local\Temp\96098a82dbd191accb7d9d11d996995f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\96098a82dbd191accb7d9d11d996995f_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1404
- C:\Users\Admin\AppData\Local\Temp\96098a82dbd191accb7d9d11d996995f_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\96098a82dbd191accb7d9d11d996995f_JaffaCakes118.exe
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2128
- - C:\Users\Admin\AppData\Local\Temp\96098a82dbd191accb7d9d11d996995f_JaffaCakes118.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\tmp.ini"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2400

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/2128-2-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/2128-17-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/2400-10-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2400-9-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2400-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2400-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2400-16-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing