isrstealer | 9c2c62d4c59900ffbaa1d74d0f9694efcb20e82321646568c2fd7b2345fb3b3c

General

Target

d38f179b057a7dd91cdca34db51a0c08.exe
Size

372KB
MD5

d38f179b057a7dd91cdca34db51a0c08
SHA1

ace630d040759e360c8145a2214b0152630b4b33
SHA256

9c2c62d4c59900ffbaa1d74d0f9694efcb20e82321646568c2fd7b2345fb3b3c
SHA512

a7bead564fd4b945b02560c7b60b67b1c88f99231d0706de9db04693a0ecd2ed9d8b95c06cf246c1cbf8c1c8011226b9a9421790bf5b5a7086c55294029dadf0
SSDEEP

6144:NR7/LHNoeTp1gm0rYMLOTvEBSq0w7xZ6s6igcnz/RfyhZ4TtbuIwx+BZGb0g5j:NVzdTp1gj0MLOT0SqRxo1igcz/UcTJuP

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/2616-4-0x0000000000400000-0x0000000000435000-memory.dmp	family_isrstealer
behavioral1/memory/2616-8-0x0000000000400000-0x0000000000435000-memory.dmp	family_isrstealer
behavioral1/memory/2616-14-0x0000000000400000-0x0000000000435000-memory.dmp	family_isrstealer
behavioral1/memory/2616-23-0x0000000000400000-0x0000000000435000-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 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/3032-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/3032-16-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/3032-17-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/3032-18-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/3032-20-0x0000000000400000-0x0000000000453000-memory.dmp	upx

Suspicious use of SetThreadContext 2 IoCs

Processes:

d38f179b057a7dd91cdca34db51a0c08.exed38f179b057a7dd91cdca34db51a0c08.exe

description	pid	process	target process
PID 2392 set thread context of 2616	2392	d38f179b057a7dd91cdca34db51a0c08.exe	d38f179b057a7dd91cdca34db51a0c08.exe
PID 2616 set thread context of 3032	2616	d38f179b057a7dd91cdca34db51a0c08.exe	d38f179b057a7dd91cdca34db51a0c08.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

d38f179b057a7dd91cdca34db51a0c08.exe

pid process

2616 d38f179b057a7dd91cdca34db51a0c08.exe

pid	process
2616	d38f179b057a7dd91cdca34db51a0c08.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

d38f179b057a7dd91cdca34db51a0c08.exed38f179b057a7dd91cdca34db51a0c08.exe

C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
"C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2392
- C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
  "C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2616
- - C:\Users\Admin\AppData\Local\Temp\d38f179b057a7dd91cdca34db51a0c08.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\FWFv1FElSQ.ini"
    3⤵
    PID:3032

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\FWFv1FElSQ.ini

Filesize
5B

MD5
d1ea279fb5559c020a1b4137dc4de237

SHA1
db6f8988af46b56216a6f0daf95ab8c9bdb57400

SHA256
fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

SHA512
720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

Download Submit
memory/2616-14-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2616-4-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2616-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2616-8-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2616-0-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2616-2-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2616-23-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/3032-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3032-16-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3032-17-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3032-18-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3032-20-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

description	pid	process	target process
PID 2392 wrote to memory of 2616	2392	d38f179b057a7dd91cdca34db51a0c08.exe	d38f179b057a7dd91cdca34db51a0c08.exe
PID 2392 wrote to memory of 2616	2392	d38f179b057a7dd91cdca34db51a0c08.exe	d38f179b057a7dd91cdca34db51a0c08.exe
PID 2392 wrote to memory of 2616	2392	d38f179b057a7dd91cdca34db51a0c08.exe	d38f179b057a7dd91cdca34db51a0c08.exe
PID 2392 wrote to memory of 2616	2392	d38f179b057a7dd91cdca34db51a0c08.exe	d38f179b057a7dd91cdca34db51a0c08.exe
PID 2392 wrote to memory of 2616	2392	d38f179b057a7dd91cdca34db51a0c08.exe	d38f179b057a7dd91cdca34db51a0c08.exe
PID 2392 wrote to memory of 2616	2392	d38f179b057a7dd91cdca34db51a0c08.exe	d38f179b057a7dd91cdca34db51a0c08.exe
PID 2392 wrote to memory of 2616	2392	d38f179b057a7dd91cdca34db51a0c08.exe	d38f179b057a7dd91cdca34db51a0c08.exe
PID 2392 wrote to memory of 2616	2392	d38f179b057a7dd91cdca34db51a0c08.exe	d38f179b057a7dd91cdca34db51a0c08.exe
PID 2616 wrote to memory of 3032	2616	d38f179b057a7dd91cdca34db51a0c08.exe	d38f179b057a7dd91cdca34db51a0c08.exe
PID 2616 wrote to memory of 3032	2616	d38f179b057a7dd91cdca34db51a0c08.exe	d38f179b057a7dd91cdca34db51a0c08.exe
PID 2616 wrote to memory of 3032	2616	d38f179b057a7dd91cdca34db51a0c08.exe	d38f179b057a7dd91cdca34db51a0c08.exe
PID 2616 wrote to memory of 3032	2616	d38f179b057a7dd91cdca34db51a0c08.exe	d38f179b057a7dd91cdca34db51a0c08.exe
PID 2616 wrote to memory of 3032	2616	d38f179b057a7dd91cdca34db51a0c08.exe	d38f179b057a7dd91cdca34db51a0c08.exe
PID 2616 wrote to memory of 3032	2616	d38f179b057a7dd91cdca34db51a0c08.exe	d38f179b057a7dd91cdca34db51a0c08.exe
PID 2616 wrote to memory of 3032	2616	d38f179b057a7dd91cdca34db51a0c08.exe	d38f179b057a7dd91cdca34db51a0c08.exe
PID 2616 wrote to memory of 3032	2616	d38f179b057a7dd91cdca34db51a0c08.exe	d38f179b057a7dd91cdca34db51a0c08.exe
PID 2616 wrote to memory of 3032	2616	d38f179b057a7dd91cdca34db51a0c08.exe	d38f179b057a7dd91cdca34db51a0c08.exe

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads