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 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/808-57-0x0000000000401180-mapping.dmp	family_isrstealer
behavioral1/memory/808-56-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/808-67-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/808-72-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/808-80-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral1/memory/1648-78-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView
behavioral1/memory/1648-79-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView

Nirsoft 2 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1648-78-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft
behavioral1/memory/1648-79-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft

UPX packed file 9 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/996-61-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/996-65-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/996-66-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/996-68-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/996-69-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1648-73-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/1648-77-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/1648-78-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/1648-79-0x0000000000400000-0x000000000041F000-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:

235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\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 1844 set thread context of 808	1844	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 808 set thread context of 996	808	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 808 set thread context of 1648	808	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe

pid	process
1844	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
808	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe

Suspicious use of WriteProcessMemory 27 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:1844

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:808

C:\Users\Admin\AppData\Local\Temp\235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\1deUviJ3wt.ini"
3⤵
PID:996

C:\Users\Admin\AppData\Local\Temp\235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\3uK48Sbki5.ini"
3⤵
- Accesses Microsoft Outlook accounts
PID:1648

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

C:\Users\Admin\AppData\Local\Temp\1deUviJ3wt.ini
Filesize
5B

MD5
d1ea279fb5559c020a1b4137dc4de237

SHA1
db6f8988af46b56216a6f0daf95ab8c9bdb57400

SHA256
fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

SHA512
720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

Download Submit
memory/808-67-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/808-56-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/808-80-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/808-72-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/808-57-0x0000000000401180-mapping.dmp

Download
memory/996-68-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/996-66-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/996-65-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/996-69-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/996-64-0x0000000075B41000-0x0000000075B43000-memory.dmp

Filesize
8KB

Download
memory/996-61-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/996-62-0x00000000004512E0-mapping.dmp

Download
memory/1648-73-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1648-74-0x000000000041C410-mapping.dmp

Download
memory/1648-77-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1648-78-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1648-79-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download

description	pid	process	target process
PID 1844 wrote to memory of 808	1844	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 1844 wrote to memory of 808	1844	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 1844 wrote to memory of 808	1844	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 1844 wrote to memory of 808	1844	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 1844 wrote to memory of 808	1844	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 1844 wrote to memory of 808	1844	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 1844 wrote to memory of 808	1844	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 1844 wrote to memory of 808	1844	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 1844 wrote to memory of 808	1844	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 808 wrote to memory of 996	808	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 808 wrote to memory of 996	808	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 808 wrote to memory of 996	808	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 808 wrote to memory of 996	808	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 808 wrote to memory of 996	808	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 808 wrote to memory of 996	808	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 808 wrote to memory of 996	808	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 808 wrote to memory of 996	808	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 808 wrote to memory of 996	808	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 808 wrote to memory of 1648	808	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 808 wrote to memory of 1648	808	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 808 wrote to memory of 1648	808	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 808 wrote to memory of 1648	808	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 808 wrote to memory of 1648	808	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 808 wrote to memory of 1648	808	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 808 wrote to memory of 1648	808	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 808 wrote to memory of 1648	808	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe
PID 808 wrote to memory of 1648	808	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe	235efca1f28c21f911178e4d3be5b71c00e36f47d73ae14798e51e49c655c78b.exe

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads