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 3 IoCs

resource	yara_rule
behavioral1/memory/3012-7-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral1/memory/3012-14-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral1/memory/3012-17-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer

Executes dropped EXE 1 IoCs

pid	Process
3012	bcrk5qdp.exe

Loads dropped DLL 1 IoCs

pid	Process
2988	12de83f0ab139b1ff0b3befcff587005_JaffaCakes118.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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Run\qaap20vxtngl30nz = "C:\\Users\\Admin\\AppData\\Roaming\\qkj5z3l2\\"	12de83f0ab139b1ff0b3befcff587005_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2988 set thread context of 3012	2988	12de83f0ab139b1ff0b3befcff587005_JaffaCakes118.exe	28

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3012	bcrk5qdp.exe
3012	bcrk5qdp.exe
3012	bcrk5qdp.exe
3012	bcrk5qdp.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3012	bcrk5qdp.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2988 wrote to memory of 3012	2988	12de83f0ab139b1ff0b3befcff587005_JaffaCakes118.exe	28
PID 2988 wrote to memory of 3012	2988	12de83f0ab139b1ff0b3befcff587005_JaffaCakes118.exe	28
PID 2988 wrote to memory of 3012	2988	12de83f0ab139b1ff0b3befcff587005_JaffaCakes118.exe	28
PID 2988 wrote to memory of 3012	2988	12de83f0ab139b1ff0b3befcff587005_JaffaCakes118.exe	28
PID 2988 wrote to memory of 3012	2988	12de83f0ab139b1ff0b3befcff587005_JaffaCakes118.exe	28
PID 2988 wrote to memory of 3012	2988	12de83f0ab139b1ff0b3befcff587005_JaffaCakes118.exe	28
PID 2988 wrote to memory of 3012	2988	12de83f0ab139b1ff0b3befcff587005_JaffaCakes118.exe	28
PID 2988 wrote to memory of 3012	2988	12de83f0ab139b1ff0b3befcff587005_JaffaCakes118.exe	28
PID 2988 wrote to memory of 3012	2988	12de83f0ab139b1ff0b3befcff587005_JaffaCakes118.exe	28

C:\Users\Admin\AppData\Local\Temp\12de83f0ab139b1ff0b3befcff587005_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\12de83f0ab139b1ff0b3befcff587005_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2988
- C:\Users\Admin\AppData\Local\Temp\bcrk5qdp.exe
  C:\Users\Admin\AppData\Local\Temp\bcrk5qdp.exe
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:3012

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

\Users\Admin\AppData\Local\Temp\bcrk5qdp.exe

Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
memory/2988-0-0x0000000074071000-0x0000000074072000-memory.dmp

Filesize
4KB

Download
memory/2988-1-0x0000000074070000-0x000000007461B000-memory.dmp

Filesize
5.7MB

Download
memory/2988-2-0x0000000074070000-0x000000007461B000-memory.dmp

Filesize
5.7MB

Download
memory/2988-10-0x0000000074070000-0x000000007461B000-memory.dmp

Filesize
5.7MB

Download
memory/3012-7-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3012-14-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3012-17-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads