isrstealer | d8664643122a00f9943d486ae020cf5e44ea3bf2ce3eb4fb1414bb70bc2b3277

General

Target

3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe
Size

200KB
MD5

3cbb78cf1b286017ef9638b8b4c833c8
SHA1

745712222454ac346dc32d36eb37e6419e42825c
SHA256

d8664643122a00f9943d486ae020cf5e44ea3bf2ce3eb4fb1414bb70bc2b3277
SHA512

e37ce60e97af29f6aa0f3ecfe6564f46c05832d194a9608a55e64660e0f9e0b345365b28ea42d28ee846baa16e7c791449771c33a7f409a3b6b34fadb26147ea
SSDEEP

3072:jgrqKPEzecsOLFT3NAjep1wZFa+4qUJ4brRiRxAQY:jgrcjscT3NEepSZn2tp

Score

10^/10

isrstealer 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 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2812-25-0x0000000000400000-0x0000000000418000-memory.dmp	family_isrstealer
behavioral1/memory/2812-26-0x0000000000400000-0x0000000000418000-memory.dmp	family_isrstealer
behavioral1/memory/2812-29-0x0000000000400000-0x0000000000418000-memory.dmp	family_isrstealer
behavioral1/memory/2812-31-0x0000000000400000-0x0000000000418000-memory.dmp	family_isrstealer

Executes dropped EXE 1 IoCs

Processes:

259490612.exe

pid process

2072 259490612.exe

pid	process
2072	259490612.exe

Loads dropped DLL 5 IoCs

Processes:

3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe

pid	process
1676	3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe
1676	3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe
1676	3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe
1676	3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe
1676	3cbb78cf1b286017ef9638b8b4c833c8_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

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2812-19-0x0000000000400000-0x0000000000418000-memory.dmp	upx
behavioral1/memory/2812-21-0x0000000000400000-0x0000000000418000-memory.dmp	upx
behavioral1/memory/2812-25-0x0000000000400000-0x0000000000418000-memory.dmp	upx
behavioral1/memory/2812-26-0x0000000000400000-0x0000000000418000-memory.dmp	upx
behavioral1/memory/2812-29-0x0000000000400000-0x0000000000418000-memory.dmp	upx
behavioral1/memory/2812-31-0x0000000000400000-0x0000000000418000-memory.dmp	upx

Suspicious use of SetThreadContext 1 IoCs

Processes:

3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe

description	pid	process	target process
PID 1676 set thread context of 2812	1676	3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe	3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe

pid	process
2812	3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe
2812	3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe
2812	3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe
2812	3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe259490612.exe3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe

pid process

1676 3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe
2072 259490612.exe
2812 3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe

description	pid	process	target process
PID 1676 wrote to memory of 2072	1676	3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe	259490612.exe
PID 1676 wrote to memory of 2072	1676	3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe	259490612.exe
PID 1676 wrote to memory of 2072	1676	3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe	259490612.exe
PID 1676 wrote to memory of 2072	1676	3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe	259490612.exe
PID 1676 wrote to memory of 2812	1676	3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe	3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe
PID 1676 wrote to memory of 2812	1676	3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe	3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe
PID 1676 wrote to memory of 2812	1676	3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe	3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe
PID 1676 wrote to memory of 2812	1676	3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe	3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe
PID 1676 wrote to memory of 2812	1676	3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe	3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe
PID 1676 wrote to memory of 2812	1676	3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe	3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe
PID 1676 wrote to memory of 2812	1676	3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe	3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe
PID 1676 wrote to memory of 2812	1676	3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe	3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe
PID 1676 wrote to memory of 2812	1676	3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe	3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1676
- C:\Users\Admin\AppData\Roaming\259490612.exe
  "C:\Users\Admin\AppData\Roaming\259490612.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:2072
- C:\Users\Admin\AppData\Local\Temp\3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\3cbb78cf1b286017ef9638b8b4c833c8_JaffaCakes118.exe
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:2812

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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\Roaming\259490612.exe

Filesize
68KB

MD5
8682971643ff77e31f069d043b858179

SHA1
7296e3529b189b3863c7b1a0c562cdce6b8c0406

SHA256
07b15fae2aae41c1a895d67c7c893986ca373e5828b9d1a0af109ac3c6f80821

SHA512
29d2adcf5af2cf8aafbbc4598f044a0dc3f8f269bd920f177229d58d0128259ad75d93d99b86f9ce6b7a5859d4bbf52fd2fef508412ab6802b43bb9aea10a3bd

Download Submit
memory/2812-19-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2812-21-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2812-25-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2812-26-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2812-29-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2812-31-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads