isrstealer | 0a1386d2792ce892d9d1de3c021cbf398b1598d19e6d03e8aebafa154a01dc3a

General

Target

12de83f0ab139b1ff0b3befcff587005_JaffaCakes118.exe
Size

116KB
MD5

12de83f0ab139b1ff0b3befcff587005
SHA1

832d4772bf93d2213a7b17bdc3e6cf91a4ffe455
SHA256

0a1386d2792ce892d9d1de3c021cbf398b1598d19e6d03e8aebafa154a01dc3a
SHA512

f1ec7869e4b18aaf80ec965de74f91e12f91b4605e9b19f2ed76a16063d6fb1d9169fcf582109734bebb9a71d3736aaf1d13778def29346fe65bd33db65b92bb
SSDEEP

1536:BxcfwgEgZJ/0Fipjfuh2WxFSn9ziAN0vvyLcyoW1mcJ:3S/DuhhA9ziACHyLB1

Score

10^/10

isrstealer persistence spyware 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 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3908-5-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral2/memory/3908-12-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral2/memory/3908-15-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral2/memory/3908-16-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer

Executes dropped EXE 1 IoCs

Processes:

swe4tbye.exe

pid process

3908 swe4tbye.exe
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
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

pid	process
3908	swe4tbye.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

12de83f0ab139b1ff0b3befcff587005_JaffaCakes118.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\qaap20vxtngl30nz = "C:\\Users\\Admin\\AppData\\Roaming\\qkj5z3l2\\"	12de83f0ab139b1ff0b3befcff587005_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

12de83f0ab139b1ff0b3befcff587005_JaffaCakes118.exe

description pid process target process

PID 1892 set thread context of 3908 1892 12de83f0ab139b1ff0b3befcff587005_JaffaCakes118.exe swe4tbye.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

swe4tbye.exe

pid process

3908 swe4tbye.exe
3908 swe4tbye.exe
3908 swe4tbye.exe
3908 swe4tbye.exe
3908 swe4tbye.exe
3908 swe4tbye.exe
3908 swe4tbye.exe
3908 swe4tbye.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

swe4tbye.exe

pid process

3908 swe4tbye.exe

description	pid	process	target process
PID 1892 set thread context of 3908	1892	12de83f0ab139b1ff0b3befcff587005_JaffaCakes118.exe	swe4tbye.exe

pid	process
3908	swe4tbye.exe
3908	swe4tbye.exe
3908	swe4tbye.exe
3908	swe4tbye.exe
3908	swe4tbye.exe
3908	swe4tbye.exe
3908	swe4tbye.exe
3908	swe4tbye.exe

pid	process
3908	swe4tbye.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

12de83f0ab139b1ff0b3befcff587005_JaffaCakes118.exe

description	pid	process	target process
PID 1892 wrote to memory of 3908	1892	12de83f0ab139b1ff0b3befcff587005_JaffaCakes118.exe	swe4tbye.exe
PID 1892 wrote to memory of 3908	1892	12de83f0ab139b1ff0b3befcff587005_JaffaCakes118.exe	swe4tbye.exe
PID 1892 wrote to memory of 3908	1892	12de83f0ab139b1ff0b3befcff587005_JaffaCakes118.exe	swe4tbye.exe
PID 1892 wrote to memory of 3908	1892	12de83f0ab139b1ff0b3befcff587005_JaffaCakes118.exe	swe4tbye.exe
PID 1892 wrote to memory of 3908	1892	12de83f0ab139b1ff0b3befcff587005_JaffaCakes118.exe	swe4tbye.exe
PID 1892 wrote to memory of 3908	1892	12de83f0ab139b1ff0b3befcff587005_JaffaCakes118.exe	swe4tbye.exe
PID 1892 wrote to memory of 3908	1892	12de83f0ab139b1ff0b3befcff587005_JaffaCakes118.exe	swe4tbye.exe
PID 1892 wrote to memory of 3908	1892	12de83f0ab139b1ff0b3befcff587005_JaffaCakes118.exe	swe4tbye.exe

C:\Users\Admin\AppData\Local\Temp\12de83f0ab139b1ff0b3befcff587005_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\12de83f0ab139b1ff0b3befcff587005_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1892
- C:\Users\Admin\AppData\Local\Temp\swe4tbye.exe
  C:\Users\Admin\AppData\Local\Temp\swe4tbye.exe
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:3908

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\swe4tbye.exe

Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
memory/1892-0-0x0000000074A32000-0x0000000074A33000-memory.dmp

Filesize
4KB

Download
memory/1892-1-0x0000000074A30000-0x0000000074FE1000-memory.dmp

Filesize
5.7MB

Download
memory/1892-2-0x0000000074A30000-0x0000000074FE1000-memory.dmp

Filesize
5.7MB

Download
memory/1892-11-0x0000000074A30000-0x0000000074FE1000-memory.dmp

Filesize
5.7MB

Download
memory/3908-5-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3908-12-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3908-15-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3908-16-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads