isrstealer | d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c

Analysis

max time kernel
131s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
29/10/2022, 15:58

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe
Size 415KB
Sample221029-tel97adcb5
SHA256 d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c
MD5 7de266aa3d2fba47f82b682a51221032
SHA1 7d50f85f2b4efa3734ec78f4c6dcf66d25d3a10d
SHA512 4d35a4b8137fe66db693f88bbd8e18a958d1cd10526bc5f8f720fe02db82aaf3fabab6daae73b7eca227aaa54f108645f72281252ab561f1f413c866e36452b4
SSDEEP 12288:xmxPghDNC+35GHw1lXKoWxSurApOo0R2nYB7vj:xhsm5GQ1lXKiuUpM
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

isrstealer collection 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 6 IoCs

resource	yara_rule
behavioral2/memory/3584-133-0x0000000000000000-mapping.dmp	family_isrstealer
behavioral2/memory/3584-134-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral2/memory/3584-136-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral2/memory/3584-139-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral2/memory/3584-149-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral2/memory/3584-157-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/4916-151-0x0000000000000000-mapping.dmp	MailPassView
behavioral2/memory/4916-155-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView
behavioral2/memory/4916-156-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView

Nirsoft 3 IoCs

resource	yara_rule
behavioral2/memory/4916-151-0x0000000000000000-mapping.dmp	Nirsoft
behavioral2/memory/4916-155-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft
behavioral2/memory/4916-156-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4464-144-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4464-146-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4464-147-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4464-148-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4916-152-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral2/memory/4916-154-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral2/memory/4916-155-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral2/memory/4916-156-0x0000000000400000-0x000000000041F000-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

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3548 set thread context of 3584	3548	d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe	83
PID 3584 set thread context of 4464	3584	d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe	84
PID 3584 set thread context of 4916	3584	d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe	85

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3584	d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 3548 wrote to memory of 1364	3548	d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe	82
PID 3548 wrote to memory of 1364	3548	d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe	82
PID 3548 wrote to memory of 1364	3548	d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe	82
PID 3548 wrote to memory of 3584	3548	d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe	83
PID 3548 wrote to memory of 3584	3548	d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe	83
PID 3548 wrote to memory of 3584	3548	d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe	83
PID 3548 wrote to memory of 3584	3548	d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe	83
PID 3548 wrote to memory of 3584	3548	d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe	83
PID 3548 wrote to memory of 3584	3548	d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe	83
PID 3548 wrote to memory of 3584	3548	d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe	83
PID 3548 wrote to memory of 3584	3548	d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe	83
PID 3584 wrote to memory of 4464	3584	d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe	84
PID 3584 wrote to memory of 4464	3584	d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe	84
PID 3584 wrote to memory of 4464	3584	d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe	84
PID 3584 wrote to memory of 4464	3584	d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe	84
PID 3584 wrote to memory of 4464	3584	d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe	84
PID 3584 wrote to memory of 4464	3584	d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe	84
PID 3584 wrote to memory of 4464	3584	d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe	84
PID 3584 wrote to memory of 4464	3584	d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe	84
PID 3584 wrote to memory of 4916	3584	d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe	85
PID 3584 wrote to memory of 4916	3584	d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe	85
PID 3584 wrote to memory of 4916	3584	d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe	85
PID 3584 wrote to memory of 4916	3584	d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe	85
PID 3584 wrote to memory of 4916	3584	d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe	85
PID 3584 wrote to memory of 4916	3584	d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe	85
PID 3584 wrote to memory of 4916	3584	d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe	85
PID 3584 wrote to memory of 4916	3584	d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe	85

C:\Users\Admin\AppData\Local\Temp\d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe
"C:\Users\Admin\AppData\Local\Temp\d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3548
- C:\Users\Admin\AppData\Local\Temp\d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe
  "C:\Users\Admin\AppData\Local\Temp\d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe"
  2⤵
  PID:1364
- C:\Users\Admin\AppData\Local\Temp\d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe
  "C:\Users\Admin\AppData\Local\Temp\d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3584
- - C:\Users\Admin\AppData\Local\Temp\d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\SsNyaUgo0i.ini"
    3⤵
    PID:4464
- - C:\Users\Admin\AppData\Local\Temp\d5fe3235c76751601ed37f4ab34886c57350b18c578666ea63669d92c38eeb3c.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\uwOJvSWEYh.ini"
    3⤵
    - Accesses Microsoft Outlook accounts
    PID:4916

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

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

SsNyaUgo0i.ini

Path C:\Users\Admin\AppData\Local\Temp\SsNyaUgo0i.ini
Size 5B
SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
MD5 d1ea279fb5559c020a1b4137dc4de237
SHA1 db6f8988af46b56216a6f0daf95ab8c9bdb57400
SHA512 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3
MD5 SHA1 SHA512

Submit Download

memory/3548-132-0x0000000074E20000-0x00000000753D1000-memory.dmp

Download

memory/3548-140-0x0000000074E20000-0x00000000753D1000-memory.dmp

Download

memory/3584-139-0x0000000000400000-0x0000000000442000-memory.dmp

Download

memory/3584-136-0x0000000000400000-0x0000000000442000-memory.dmp

Download

memory/3584-134-0x0000000000400000-0x0000000000442000-memory.dmp

Download

memory/3584-157-0x0000000000400000-0x0000000000442000-memory.dmp

Download

memory/3584-149-0x0000000000400000-0x0000000000442000-memory.dmp

Download

memory/4464-148-0x0000000000400000-0x0000000000453000-memory.dmp

Download

memory/4464-147-0x0000000000400000-0x0000000000453000-memory.dmp

Download

memory/4464-146-0x0000000000400000-0x0000000000453000-memory.dmp

Download

memory/4464-144-0x0000000000400000-0x0000000000453000-memory.dmp

Download

memory/4916-152-0x0000000000400000-0x000000000041F000-memory.dmp

Download

memory/4916-154-0x0000000000400000-0x000000000041F000-memory.dmp

Download

memory/4916-155-0x0000000000400000-0x000000000041F000-memory.dmp

Download

memory/4916-156-0x0000000000400000-0x000000000041F000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads