isrstealer | f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227

General

Target

f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe
Size

402KB
MD5

21838131e312ccc1629fbb4581f211fa
SHA1

7f32c6f2900f5427c84cc00377ed6e04183b156c
SHA256

f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227
SHA512

20eb5ee491241d8b6d15d2c0b971a5938c7e5f4b37a87ae980a3f26c77fd4061f335f9c88fc824cb398a18ddccd7a2225468effc3f4b496c0addbe32f90a9a88
SSDEEP

6144:VNzK2WpGt4j/5MeXF4RaQWiZULy75ad99XHgFswLtiJV35XU36OvelMjqZ:VRKrueMe+RrW9hWiJVFUKOGlMjqZ

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/1384-134-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral2/memory/1384-136-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral2/memory/1384-147-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral2/memory/1384-154-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral2/memory/2520-152-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView
behavioral2/memory/2520-153-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView

Nirsoft 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2520-152-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft
behavioral2/memory/2520-153-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft

UPX packed file 8 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/1172-141-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1172-143-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1172-144-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1172-145-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2520-149-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral2/memory/2520-151-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral2/memory/2520-152-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral2/memory/2520-153-0x0000000000400000-0x000000000041F000-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:

f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exef2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe

description	pid	process	target process
PID 4756 set thread context of 1384	4756	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe
PID 1384 set thread context of 1172	1384	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe
PID 1384 set thread context of 2520	1384	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe

pid	process
4756	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe
4756	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe

description pid process

Token: SeDebugPrivilege 4756 f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe

pid process

1384 f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe

description	pid	process
Token: SeDebugPrivilege	4756	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe

pid	process
1384	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exef2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe

C:\Users\Admin\AppData\Local\Temp\f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe
"C:\Users\Admin\AppData\Local\Temp\f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4756

C:\Users\Admin\AppData\Local\Temp\f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe
"C:\Users\Admin\AppData\Local\Temp\f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1384

C:\Users\Admin\AppData\Local\Temp\f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\5LnDIzHofc.ini"
3⤵
PID:1172

C:\Users\Admin\AppData\Local\Temp\f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\tURHmZ5tZZ.ini"
3⤵
- Accesses Microsoft Outlook accounts
PID:2520

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\5LnDIzHofc.ini
Filesize
5B

MD5
d1ea279fb5559c020a1b4137dc4de237

SHA1
db6f8988af46b56216a6f0daf95ab8c9bdb57400

SHA256
fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

SHA512
720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

Download Submit
memory/1172-141-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1172-145-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1172-144-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1172-143-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1172-140-0x0000000000000000-mapping.dmp

Download
memory/1384-136-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1384-134-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1384-133-0x0000000000000000-mapping.dmp

Download
memory/1384-147-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1384-154-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2520-148-0x0000000000000000-mapping.dmp

Download
memory/2520-149-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2520-151-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2520-152-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2520-153-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4756-132-0x0000000074B90000-0x0000000075141000-memory.dmp

Filesize
5.7MB

Download
memory/4756-137-0x0000000074B90000-0x0000000075141000-memory.dmp

Filesize
5.7MB

Download

description	pid	process	target process
PID 4756 wrote to memory of 1384	4756	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe
PID 4756 wrote to memory of 1384	4756	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe
PID 4756 wrote to memory of 1384	4756	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe
PID 4756 wrote to memory of 1384	4756	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe
PID 4756 wrote to memory of 1384	4756	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe
PID 4756 wrote to memory of 1384	4756	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe
PID 4756 wrote to memory of 1384	4756	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe
PID 1384 wrote to memory of 1172	1384	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe
PID 1384 wrote to memory of 1172	1384	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe
PID 1384 wrote to memory of 1172	1384	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe
PID 1384 wrote to memory of 1172	1384	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe
PID 1384 wrote to memory of 1172	1384	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe
PID 1384 wrote to memory of 1172	1384	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe
PID 1384 wrote to memory of 1172	1384	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe
PID 1384 wrote to memory of 1172	1384	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe
PID 1384 wrote to memory of 2520	1384	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe
PID 1384 wrote to memory of 2520	1384	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe
PID 1384 wrote to memory of 2520	1384	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe
PID 1384 wrote to memory of 2520	1384	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe
PID 1384 wrote to memory of 2520	1384	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe
PID 1384 wrote to memory of 2520	1384	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe
PID 1384 wrote to memory of 2520	1384	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe
PID 1384 wrote to memory of 2520	1384	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe	f2a5982ba901ace217b1592d80dbde04b029d14f47404525c7b8696a23b0e227.exe

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads