isrstealer | 4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1

General

Target

4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe
Size

344KB
MD5

87a98db6af2353cc097dc85484f97ff8
SHA1

433ef975fd9cffd9ee28d87a01bc963392fb2acb
SHA256

4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1
SHA512

da11af4d38b674249ff2368e4b90dcfd3d4fced3ebcac12a14aa22623f0d789ecdb386083181d5ca14040003854deaf194f167606bcbf6bcf5b2d2b696d7535c
SSDEEP

6144:Toe/JOO2Dmb894GIQzEmYrPUwWCh4ePil1CV+Pk0ylQLPJ2tPHQtmAx:ToecDe894ZQzrYrX5h4eKXCVyiEBwPHs

Score

10^/10

isrstealer 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
behavioral2/memory/3960-135-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral2/memory/3960-137-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral2/memory/3960-147-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral2/memory/3960-149-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral2/memory/3960-152-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer

UPX packed file 4 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/376-141-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/376-144-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/376-145-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/376-146-0x0000000000400000-0x0000000000453000-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

Suspicious use of SetThreadContext 3 IoCs

Processes:

4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe

description	pid	process	target process
PID 4880 set thread context of 3960	4880	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe
PID 3960 set thread context of 376	3960	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe
PID 3960 set thread context of 3564	3960	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3972 3564 WerFault.exe 4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe

description pid process

Token: SeDebugPrivilege 4880 4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe

pid process

3960 4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe

pid	pid_target	process	target process
3972	3564	WerFault.exe	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe

description	pid	process
Token: SeDebugPrivilege	4880	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe

pid	process
3960	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe

C:\Users\Admin\AppData\Local\Temp\4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe
"C:\Users\Admin\AppData\Local\Temp\4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4880

C:\Users\Admin\AppData\Local\Temp\4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe
"C:\Users\Admin\AppData\Local\Temp\4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3960

C:\Users\Admin\AppData\Local\Temp\4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\ZmpAOqJyNr.ini"
3⤵
PID:376

C:\Users\Admin\AppData\Local\Temp\4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\BQ0HamaqIl.ini"
3⤵
PID:3564

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3564 -s 80
4⤵
- Program crash
PID:3972

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 3564 -ip 3564
1⤵
PID:1872

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

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
5B

MD5
d1ea279fb5559c020a1b4137dc4de237

SHA1
db6f8988af46b56216a6f0daf95ab8c9bdb57400

SHA256
fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

SHA512
720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

Download Submit
memory/376-144-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/376-145-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/376-146-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/376-141-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/376-140-0x0000000000000000-mapping.dmp

Download
memory/3564-150-0x0000000000000000-mapping.dmp

Download
memory/3960-137-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/3960-134-0x0000000000000000-mapping.dmp

Download
memory/3960-135-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/3960-147-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/3960-149-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/3960-152-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/4880-132-0x00000000745F0000-0x0000000074BA1000-memory.dmp

Filesize
5.7MB

Download
memory/4880-142-0x00000000745F0000-0x0000000074BA1000-memory.dmp

Filesize
5.7MB

Download
memory/4880-133-0x00000000745F0000-0x0000000074BA1000-memory.dmp

Filesize
5.7MB

Download

description	pid	process	target process
PID 4880 wrote to memory of 3960	4880	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe
PID 4880 wrote to memory of 3960	4880	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe
PID 4880 wrote to memory of 3960	4880	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe
PID 4880 wrote to memory of 3960	4880	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe
PID 4880 wrote to memory of 3960	4880	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe
PID 4880 wrote to memory of 3960	4880	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe
PID 4880 wrote to memory of 3960	4880	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe
PID 3960 wrote to memory of 376	3960	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe
PID 3960 wrote to memory of 376	3960	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe
PID 3960 wrote to memory of 376	3960	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe
PID 3960 wrote to memory of 376	3960	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe
PID 3960 wrote to memory of 376	3960	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe
PID 3960 wrote to memory of 376	3960	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe
PID 3960 wrote to memory of 376	3960	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe
PID 3960 wrote to memory of 376	3960	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe
PID 3960 wrote to memory of 3564	3960	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe
PID 3960 wrote to memory of 3564	3960	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe
PID 3960 wrote to memory of 3564	3960	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe
PID 3960 wrote to memory of 3564	3960	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe
PID 3960 wrote to memory of 3564	3960	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe
PID 3960 wrote to memory of 3564	3960	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe
PID 3960 wrote to memory of 3564	3960	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe
PID 3960 wrote to memory of 3564	3960	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe	4309cf5fb9b2df3f0697a704dc8fa1764ecb5fc0c89ec0a49e4d62e7746650e1.exe

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads