isrstealer | 862d2963fdda4c40ac84b0edfacb150d7b094aa8a00b748c5437274f7e61cb25

Analysis

max time kernel
99s
max time network
170s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
04-10-2022 01:45

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General

Target

862d2963fdda4c40ac84b0edfacb150d7b094aa8a00b748c5437274f7e61cb25.exe
Size

884KB
MD5

30990bcd176c250fe100aa06df2a6072
SHA1

bbe0b6203c89b9502b97e1ad6015ffe9af443503
SHA256

862d2963fdda4c40ac84b0edfacb150d7b094aa8a00b748c5437274f7e61cb25
SHA512

a7aa9f6aec421b1305e6e895deddea655e4173a1a58911ee62685d23b5529409b08f3e8e0fa10546d98bbbc7330ca7e0046653e51b310714390cb1ef91cf4628
SSDEEP

12288:FHey6uqi1e6/xf3Bp/JvH0mGIPP9rQarZAqGaOaPurAaIfw:leL

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 3 IoCs

resource	yara_rule
behavioral2/files/0x0008000000022e29-136.dat	family_isrstealer
behavioral2/files/0x0008000000022e29-137.dat	family_isrstealer
behavioral2/files/0x0008000000022e29-142.dat	family_isrstealer

Executes dropped EXE 2 IoCs

pid	Process
2720	talking.exe
4500	talking.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4500-141-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4500-144-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4500-145-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4500-146-0x0000000000400000-0x0000000000453000-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 1 IoCs

description	pid	Process	procid_target
PID 2720 set thread context of 4500	2720	talking.exe	83

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2720	talking.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3356 wrote to memory of 2720	3356	862d2963fdda4c40ac84b0edfacb150d7b094aa8a00b748c5437274f7e61cb25.exe	82
PID 3356 wrote to memory of 2720	3356	862d2963fdda4c40ac84b0edfacb150d7b094aa8a00b748c5437274f7e61cb25.exe	82
PID 3356 wrote to memory of 2720	3356	862d2963fdda4c40ac84b0edfacb150d7b094aa8a00b748c5437274f7e61cb25.exe	82
PID 2720 wrote to memory of 4500	2720	talking.exe	83
PID 2720 wrote to memory of 4500	2720	talking.exe	83
PID 2720 wrote to memory of 4500	2720	talking.exe	83
PID 2720 wrote to memory of 4500	2720	talking.exe	83
PID 2720 wrote to memory of 4500	2720	talking.exe	83
PID 2720 wrote to memory of 4500	2720	talking.exe	83
PID 2720 wrote to memory of 4500	2720	talking.exe	83
PID 2720 wrote to memory of 4500	2720	talking.exe	83

C:\Users\Admin\AppData\Local\Temp\862d2963fdda4c40ac84b0edfacb150d7b094aa8a00b748c5437274f7e61cb25.exe
"C:\Users\Admin\AppData\Local\Temp\862d2963fdda4c40ac84b0edfacb150d7b094aa8a00b748c5437274f7e61cb25.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3356
- C:\Users\Admin\AppData\Local\Temp\talking.exe
  "C:\Users\Admin\AppData\Local\Temp\talking.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2720
- - C:\Users\Admin\AppData\Local\Temp\talking.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\TfPaWISy2y.ini"
    3⤵
    - Executes dropped EXE
    PID:4500

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\TfPaWISy2y.ini

Filesize
5B

MD5
d1ea279fb5559c020a1b4137dc4de237

SHA1
db6f8988af46b56216a6f0daf95ab8c9bdb57400

SHA256
fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

SHA512
720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

Download Submit
C:\Users\Admin\AppData\Local\Temp\talking.exe

Filesize
212KB

MD5
ad1d36fffa782a1807f7258d82d6dc1f

SHA1
c871c0daed368cfe12a6b1fd2dddd1ffcc895927

SHA256
49782b9527eeb5e7babcae462b54b0b695f56aeef0ede37bd0b9fa81fd068ed3

SHA512
53bd0676388492a39e746dd5fc56cebc11b3a92d4de1b799e054b7ccc4548ed578ece0581fb3b9484d3ae5c650ce16a4494d7445bd602f38a2badc418dd5cfb4

Download Submit
C:\Users\Admin\AppData\Local\Temp\talking.exe

Filesize
212KB

MD5
ad1d36fffa782a1807f7258d82d6dc1f

SHA1
c871c0daed368cfe12a6b1fd2dddd1ffcc895927

SHA256
49782b9527eeb5e7babcae462b54b0b695f56aeef0ede37bd0b9fa81fd068ed3

SHA512
53bd0676388492a39e746dd5fc56cebc11b3a92d4de1b799e054b7ccc4548ed578ece0581fb3b9484d3ae5c650ce16a4494d7445bd602f38a2badc418dd5cfb4

Download Submit
C:\Users\Admin\AppData\Local\Temp\talking.exe

Filesize
212KB

MD5
ad1d36fffa782a1807f7258d82d6dc1f

SHA1
c871c0daed368cfe12a6b1fd2dddd1ffcc895927

SHA256
49782b9527eeb5e7babcae462b54b0b695f56aeef0ede37bd0b9fa81fd068ed3

SHA512
53bd0676388492a39e746dd5fc56cebc11b3a92d4de1b799e054b7ccc4548ed578ece0581fb3b9484d3ae5c650ce16a4494d7445bd602f38a2badc418dd5cfb4

Download Submit
memory/4500-141-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4500-144-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4500-145-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4500-146-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download