isrstealer | 002d28a589e7f164a28488d34a8ebcacc49a44c4f0e5e5814d41ed94971d7f80

General

Target

002d28a589e7f164a28488d34a8ebcacc49a44c4f0e5e5814d41ed94971d7f80.exe
Size

666KB
MD5

5795ae6e311cede424e2a7177a0eb8b5
SHA1

588b95b6f7538b66cf62060f92efa87cb5f64ee2
SHA256

002d28a589e7f164a28488d34a8ebcacc49a44c4f0e5e5814d41ed94971d7f80
SHA512

72d32ee07e352e8754a2f404e3e44d9ef315cf892d6abaca5a38b51c2a79b50cf4bdc28f56806cb37917ea35aa5ace940c419d1c6e1bea3e228b310688c349c4
SSDEEP

12288:5RzXdmYc/0jwUdD6YKZfvqPqtCZ3mZWhuBBwsIhEmVh/1o:5tjhpKZfvqqIW8uBBAmmVhNo

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

resource	yara_rule
behavioral2/memory/3932-136-0x0000000000400000-0x0000000000435000-memory.dmp	family_isrstealer
behavioral2/memory/3932-146-0x0000000000400000-0x0000000000435000-memory.dmp	family_isrstealer
behavioral2/memory/3932-148-0x0000000000400000-0x0000000000435000-memory.dmp	family_isrstealer
behavioral2/memory/3932-149-0x0000000000400000-0x0000000000435000-memory.dmp	family_isrstealer

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2836-132-0x0000000000400000-0x0000000000613000-memory.dmp	upx
behavioral2/memory/2836-137-0x0000000000400000-0x0000000000613000-memory.dmp	upx
behavioral2/memory/4460-141-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4460-143-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4460-144-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4460-145-0x0000000000400000-0x0000000000453000-memory.dmp	upx

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
T1081

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2836 set thread context of 3932	2836	002d28a589e7f164a28488d34a8ebcacc49a44c4f0e5e5814d41ed94971d7f80.exe	85
PID 3932 set thread context of 4460	3932	002d28a589e7f164a28488d34a8ebcacc49a44c4f0e5e5814d41ed94971d7f80.exe	86

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3932	002d28a589e7f164a28488d34a8ebcacc49a44c4f0e5e5814d41ed94971d7f80.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2836 wrote to memory of 3932	2836	002d28a589e7f164a28488d34a8ebcacc49a44c4f0e5e5814d41ed94971d7f80.exe	85
PID 2836 wrote to memory of 3932	2836	002d28a589e7f164a28488d34a8ebcacc49a44c4f0e5e5814d41ed94971d7f80.exe	85
PID 2836 wrote to memory of 3932	2836	002d28a589e7f164a28488d34a8ebcacc49a44c4f0e5e5814d41ed94971d7f80.exe	85
PID 2836 wrote to memory of 3932	2836	002d28a589e7f164a28488d34a8ebcacc49a44c4f0e5e5814d41ed94971d7f80.exe	85
PID 2836 wrote to memory of 3932	2836	002d28a589e7f164a28488d34a8ebcacc49a44c4f0e5e5814d41ed94971d7f80.exe	85
PID 2836 wrote to memory of 3932	2836	002d28a589e7f164a28488d34a8ebcacc49a44c4f0e5e5814d41ed94971d7f80.exe	85
PID 2836 wrote to memory of 3932	2836	002d28a589e7f164a28488d34a8ebcacc49a44c4f0e5e5814d41ed94971d7f80.exe	85
PID 2836 wrote to memory of 3932	2836	002d28a589e7f164a28488d34a8ebcacc49a44c4f0e5e5814d41ed94971d7f80.exe	85
PID 3932 wrote to memory of 4460	3932	002d28a589e7f164a28488d34a8ebcacc49a44c4f0e5e5814d41ed94971d7f80.exe	86
PID 3932 wrote to memory of 4460	3932	002d28a589e7f164a28488d34a8ebcacc49a44c4f0e5e5814d41ed94971d7f80.exe	86
PID 3932 wrote to memory of 4460	3932	002d28a589e7f164a28488d34a8ebcacc49a44c4f0e5e5814d41ed94971d7f80.exe	86
PID 3932 wrote to memory of 4460	3932	002d28a589e7f164a28488d34a8ebcacc49a44c4f0e5e5814d41ed94971d7f80.exe	86
PID 3932 wrote to memory of 4460	3932	002d28a589e7f164a28488d34a8ebcacc49a44c4f0e5e5814d41ed94971d7f80.exe	86
PID 3932 wrote to memory of 4460	3932	002d28a589e7f164a28488d34a8ebcacc49a44c4f0e5e5814d41ed94971d7f80.exe	86
PID 3932 wrote to memory of 4460	3932	002d28a589e7f164a28488d34a8ebcacc49a44c4f0e5e5814d41ed94971d7f80.exe	86
PID 3932 wrote to memory of 4460	3932	002d28a589e7f164a28488d34a8ebcacc49a44c4f0e5e5814d41ed94971d7f80.exe	86

C:\Users\Admin\AppData\Local\Temp\002d28a589e7f164a28488d34a8ebcacc49a44c4f0e5e5814d41ed94971d7f80.exe
"C:\Users\Admin\AppData\Local\Temp\002d28a589e7f164a28488d34a8ebcacc49a44c4f0e5e5814d41ed94971d7f80.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2836
- C:\Users\Admin\AppData\Local\Temp\002d28a589e7f164a28488d34a8ebcacc49a44c4f0e5e5814d41ed94971d7f80.exe
  "C:\Users\Admin\AppData\Local\Temp\002d28a589e7f164a28488d34a8ebcacc49a44c4f0e5e5814d41ed94971d7f80.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3932
- - C:\Users\Admin\AppData\Local\Temp\002d28a589e7f164a28488d34a8ebcacc49a44c4f0e5e5814d41ed94971d7f80.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\2mht65Q0Bq.ini"
    3⤵
    PID:4460

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\2mht65Q0Bq.ini

Filesize
5B

MD5
d1ea279fb5559c020a1b4137dc4de237

SHA1
db6f8988af46b56216a6f0daf95ab8c9bdb57400

SHA256
fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

SHA512
720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

Download Submit
memory/2836-137-0x0000000000400000-0x0000000000613000-memory.dmp

Filesize
2.1MB

Download
memory/2836-132-0x0000000000400000-0x0000000000613000-memory.dmp

Filesize
2.1MB

Download
memory/3932-146-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/3932-135-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/3932-136-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/3932-149-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/3932-148-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/4460-141-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4460-145-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4460-144-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4460-143-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

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