isrstealer | 6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7

General

Target

6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
Size

996KB
MD5

e13e4b2ed746d1034641b76680c99e86
SHA1

c106206e42295af01dc6cf03e9989c61cd4953ec
SHA256

6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7
SHA512

35cffda263c72992859acd5f92890b5cada28ac241963de3146b16de640c93379503d48baaad88fceb1e098208626f7685486da289a506ffad008ececf5257f9
SSDEEP

12288:uaWzgMg7v3qnCiMErQohh0F4CCJ8lny/Qg3rjtOnrZsWz3OWvOnbxR9rvsOrm:ZaHMv6Corjqny/Qgbj0SQOb/psOrm

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

Processes:

resource	yara_rule
behavioral1/memory/952-58-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/952-60-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/952-61-0x0000000000401180-mapping.dmp	family_isrstealer
behavioral1/memory/952-67-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/952-73-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/952-85-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral1/memory/1336-82-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView
behavioral1/memory/1336-83-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView
behavioral1/memory/1336-84-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView

Nirsoft 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1336-82-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft
behavioral1/memory/1336-83-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft
behavioral1/memory/1336-84-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft

UPX packed file 11 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/556-65-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/556-70-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/556-71-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/556-72-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/556-74-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/556-75-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1336-77-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/1336-81-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/1336-82-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/1336-83-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/1336-84-0x0000000000400000-0x000000000041F000-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

Processes:

6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe

description	pid	process	target process
PID 1964 set thread context of 952	1964	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
PID 952 set thread context of 556	952	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
PID 952 set thread context of 1336	952	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious use of FindShellTrayWindow 3 IoCs

Processes:

6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe

pid	process
1964	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
1964	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
1964	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe

Suspicious use of SendNotifyMessage 3 IoCs

Processes:

6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe

pid	process
1964	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
1964	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
1964	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe

pid process

952 6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe

pid	process
952	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe

C:\Users\Admin\AppData\Local\Temp\6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
"C:\Users\Admin\AppData\Local\Temp\6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1964

C:\Users\Admin\AppData\Local\Temp\6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
"C:\Users\Admin\AppData\Local\Temp\6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:952

C:\Users\Admin\AppData\Local\Temp\6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\Rm5aWJP8YO.ini"
3⤵
PID:556

C:\Users\Admin\AppData\Local\Temp\6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\Fp2ZgZxaWg.ini"
3⤵
- Accesses Microsoft Outlook accounts
PID:1336

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Rm5aWJP8YO.ini

Filesize
5B

MD5
d1ea279fb5559c020a1b4137dc4de237

SHA1
db6f8988af46b56216a6f0daf95ab8c9bdb57400

SHA256
fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

SHA512
720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

Download Submit
memory/556-71-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/556-74-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/556-72-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/556-75-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/556-70-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/556-66-0x00000000004512E0-mapping.dmp

Download
memory/556-65-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/952-58-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/952-55-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/952-73-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/952-85-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/952-56-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/952-61-0x0000000000401180-mapping.dmp

Download
memory/952-60-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/952-67-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1336-77-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1336-78-0x000000000041C410-mapping.dmp

Download
memory/1336-81-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1336-82-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1336-83-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1336-84-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1964-54-0x0000000074D81000-0x0000000074D83000-memory.dmp

Filesize
8KB

Download

description	pid	process	target process
PID 1964 wrote to memory of 952	1964	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
PID 1964 wrote to memory of 952	1964	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
PID 1964 wrote to memory of 952	1964	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
PID 1964 wrote to memory of 952	1964	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
PID 1964 wrote to memory of 952	1964	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
PID 1964 wrote to memory of 952	1964	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
PID 1964 wrote to memory of 952	1964	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
PID 952 wrote to memory of 556	952	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
PID 952 wrote to memory of 556	952	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
PID 952 wrote to memory of 556	952	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
PID 952 wrote to memory of 556	952	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
PID 952 wrote to memory of 556	952	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
PID 952 wrote to memory of 556	952	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
PID 952 wrote to memory of 556	952	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
PID 952 wrote to memory of 556	952	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
PID 952 wrote to memory of 556	952	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
PID 952 wrote to memory of 1336	952	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
PID 952 wrote to memory of 1336	952	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
PID 952 wrote to memory of 1336	952	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
PID 952 wrote to memory of 1336	952	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
PID 952 wrote to memory of 1336	952	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
PID 952 wrote to memory of 1336	952	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
PID 952 wrote to memory of 1336	952	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
PID 952 wrote to memory of 1336	952	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe
PID 952 wrote to memory of 1336	952	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe	6d5b241043003790a1396d98beeec8f692fc92f5dd7ff3a01602947bb58c4cd7.exe

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads