isrstealer | 235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b

General

Target

235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
Size

860KB
MD5

e9f367536f527ba50a2785fcf4796778
SHA1

f8fca7db167b7a46031f526c2a1f640aeae70779
SHA256

235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b
SHA512

78b86a546d1bb01666b22bd4c764ce097970b8e248b1a048940ed663fe6711011e16c7cde7fe40653678b65e7c44a01c329579559c91aebe977d32dce40668e6
SSDEEP

12288:uCg5DGXqkf2mhYqysM72114ANiVGjozyNY1xNei7pzgE5wKwHmMle:sANiVGjfYTNhJxwHmr

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 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4212-134-0x0000000000000000-mapping.dmp	family_isrstealer
behavioral2/memory/4212-135-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral2/memory/4212-142-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral2/memory/4212-152-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral2/memory/1232-148-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView
behavioral2/memory/1232-150-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView
behavioral2/memory/1232-153-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView

Nirsoft 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1232-148-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft
behavioral2/memory/1232-150-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft
behavioral2/memory/1232-153-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft

UPX packed file 10 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/1852-140-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1852-143-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1232-145-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral2/memory/1232-147-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral2/memory/1232-148-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral2/memory/1852-149-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1232-150-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral2/memory/1852-151-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1232-153-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral2/memory/1852-154-0x0000000000400000-0x0000000000453000-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

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe

description	pid	process	target process
PID 4576 set thread context of 4212	4576	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 4212 set thread context of 1852	4212	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 4212 set thread context of 1232	4212	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe

pid	process
4576	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
4212	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe

C:\Users\Admin\AppData\Local\Temp\235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
"C:\Users\Admin\AppData\Local\Temp\235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4576

C:\Users\Admin\AppData\Local\Temp\235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
"C:\Users\Admin\AppData\Local\Temp\235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4212

C:\Users\Admin\AppData\Local\Temp\235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\zxydCsrFn4.ini"
3⤵
PID:1852

C:\Users\Admin\AppData\Local\Temp\235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\mVJrU8KMe2.ini"
3⤵
- Accesses Microsoft Outlook accounts
PID:1232

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

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1232-144-0x0000000000000000-mapping.dmp

Download
memory/1232-153-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1232-150-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1232-148-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1232-147-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1232-145-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1852-151-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1852-143-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1852-140-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1852-149-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1852-139-0x0000000000000000-mapping.dmp

Download
memory/1852-154-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4212-142-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/4212-134-0x0000000000000000-mapping.dmp

Download
memory/4212-152-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/4212-135-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download

description	pid	process	target process
PID 4576 wrote to memory of 4212	4576	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 4576 wrote to memory of 4212	4576	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 4576 wrote to memory of 4212	4576	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 4576 wrote to memory of 4212	4576	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 4576 wrote to memory of 4212	4576	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 4576 wrote to memory of 4212	4576	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 4576 wrote to memory of 4212	4576	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 4576 wrote to memory of 4212	4576	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 4212 wrote to memory of 1852	4212	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 4212 wrote to memory of 1852	4212	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 4212 wrote to memory of 1852	4212	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 4212 wrote to memory of 1852	4212	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 4212 wrote to memory of 1852	4212	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 4212 wrote to memory of 1852	4212	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 4212 wrote to memory of 1852	4212	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 4212 wrote to memory of 1852	4212	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 4212 wrote to memory of 1232	4212	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 4212 wrote to memory of 1232	4212	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 4212 wrote to memory of 1232	4212	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 4212 wrote to memory of 1232	4212	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 4212 wrote to memory of 1232	4212	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 4212 wrote to memory of 1232	4212	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 4212 wrote to memory of 1232	4212	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 4212 wrote to memory of 1232	4212	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads