isrstealer | 825279b4ee01cb696222882013f632b6aa635167733b34987e68b82906c02dca

General

Target

409016c0af19c53d12728d32bf6e8aeb_JaffaCakes118.exe
Size

314KB
MD5

409016c0af19c53d12728d32bf6e8aeb
SHA1

f374800463d79f4d1e8f2f452c73f8215d59d057
SHA256

825279b4ee01cb696222882013f632b6aa635167733b34987e68b82906c02dca
SHA512

6b1305cb17d5295fa81c94ee66cac6fa57e2337e0f97a8a3bf2a7eab4f00fb82fc326c7f6194954a3bf96fa35887ea97fbcf0d5184faaeb91f005192f4c68aa8
SSDEEP

6144:rgODPGMlZ5+BGQCIKqbBuu7be7EmMPViQO8ksBMOVKxB6aEw3o6:dPJb5QGOZb0J7EHViChMOm6aP

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 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2856-10-0x0000000000400000-0x0000000000435000-memory.dmp	family_isrstealer
behavioral2/memory/2856-27-0x0000000000400000-0x0000000000435000-memory.dmp	family_isrstealer

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 11 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4940-0-0x0000000000400000-0x00000000004EC000-memory.dmp	upx
behavioral2/memory/2856-4-0x0000000000400000-0x0000000000435000-memory.dmp	upx
behavioral2/memory/2856-8-0x0000000000400000-0x0000000000435000-memory.dmp	upx
behavioral2/memory/2856-10-0x0000000000400000-0x0000000000435000-memory.dmp	upx
behavioral2/memory/3956-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4940-16-0x0000000000400000-0x00000000004EC000-memory.dmp	upx
behavioral2/memory/3956-17-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3956-18-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3956-19-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3956-23-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2856-27-0x0000000000400000-0x0000000000435000-memory.dmp	upx

Suspicious use of SetThreadContext 2 IoCs

Processes:

409016c0af19c53d12728d32bf6e8aeb_JaffaCakes118.exe409016c0af19c53d12728d32bf6e8aeb_JaffaCakes118.exe

description	pid	Process	procid_target
PID 4940 set thread context of 2856	4940	409016c0af19c53d12728d32bf6e8aeb_JaffaCakes118.exe	86
PID 2856 set thread context of 3956	2856	409016c0af19c53d12728d32bf6e8aeb_JaffaCakes118.exe	87

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

409016c0af19c53d12728d32bf6e8aeb_JaffaCakes118.exe409016c0af19c53d12728d32bf6e8aeb_JaffaCakes118.exe

pid	Process
4940	409016c0af19c53d12728d32bf6e8aeb_JaffaCakes118.exe
2856	409016c0af19c53d12728d32bf6e8aeb_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

409016c0af19c53d12728d32bf6e8aeb_JaffaCakes118.exe409016c0af19c53d12728d32bf6e8aeb_JaffaCakes118.exe

description	pid	Process	procid_target
PID 4940 wrote to memory of 2856	4940	409016c0af19c53d12728d32bf6e8aeb_JaffaCakes118.exe	86
PID 4940 wrote to memory of 2856	4940	409016c0af19c53d12728d32bf6e8aeb_JaffaCakes118.exe	86
PID 4940 wrote to memory of 2856	4940	409016c0af19c53d12728d32bf6e8aeb_JaffaCakes118.exe	86
PID 4940 wrote to memory of 2856	4940	409016c0af19c53d12728d32bf6e8aeb_JaffaCakes118.exe	86
PID 4940 wrote to memory of 2856	4940	409016c0af19c53d12728d32bf6e8aeb_JaffaCakes118.exe	86
PID 4940 wrote to memory of 2856	4940	409016c0af19c53d12728d32bf6e8aeb_JaffaCakes118.exe	86
PID 4940 wrote to memory of 2856	4940	409016c0af19c53d12728d32bf6e8aeb_JaffaCakes118.exe	86
PID 4940 wrote to memory of 2856	4940	409016c0af19c53d12728d32bf6e8aeb_JaffaCakes118.exe	86
PID 2856 wrote to memory of 3956	2856	409016c0af19c53d12728d32bf6e8aeb_JaffaCakes118.exe	87
PID 2856 wrote to memory of 3956	2856	409016c0af19c53d12728d32bf6e8aeb_JaffaCakes118.exe	87
PID 2856 wrote to memory of 3956	2856	409016c0af19c53d12728d32bf6e8aeb_JaffaCakes118.exe	87
PID 2856 wrote to memory of 3956	2856	409016c0af19c53d12728d32bf6e8aeb_JaffaCakes118.exe	87
PID 2856 wrote to memory of 3956	2856	409016c0af19c53d12728d32bf6e8aeb_JaffaCakes118.exe	87
PID 2856 wrote to memory of 3956	2856	409016c0af19c53d12728d32bf6e8aeb_JaffaCakes118.exe	87
PID 2856 wrote to memory of 3956	2856	409016c0af19c53d12728d32bf6e8aeb_JaffaCakes118.exe	87
PID 2856 wrote to memory of 3956	2856	409016c0af19c53d12728d32bf6e8aeb_JaffaCakes118.exe	87

C:\Users\Admin\AppData\Local\Temp\409016c0af19c53d12728d32bf6e8aeb_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\409016c0af19c53d12728d32bf6e8aeb_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4940
- C:\Users\Admin\AppData\Local\Temp\409016c0af19c53d12728d32bf6e8aeb_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\409016c0af19c53d12728d32bf6e8aeb_JaffaCakes118.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2856
- - C:\Users\Admin\AppData\Local\Temp\409016c0af19c53d12728d32bf6e8aeb_JaffaCakes118.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\tmp.ini"
    3⤵
    PID:3956

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp.ini

Filesize
5B

MD5
d1ea279fb5559c020a1b4137dc4de237

SHA1
db6f8988af46b56216a6f0daf95ab8c9bdb57400

SHA256
fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

SHA512
720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

Download Submit
memory/2856-27-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2856-4-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2856-8-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2856-10-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/3956-21-0x0000000000460000-0x0000000000529000-memory.dmp

Filesize
804KB

Download
memory/3956-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3956-17-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3956-18-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3956-19-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3956-23-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4940-5-0x0000000002B20000-0x0000000002B21000-memory.dmp

Filesize
4KB

Download
memory/4940-16-0x0000000000400000-0x00000000004EC000-memory.dmp

Filesize
944KB

Download
memory/4940-0-0x0000000000400000-0x00000000004EC000-memory.dmp

Filesize
944KB

Download
memory/4940-6-0x0000000002B30000-0x0000000002B31000-memory.dmp

Filesize
4KB

Download
memory/4940-3-0x0000000002B10000-0x0000000002B11000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads