isrstealer | 10448b62b88d14b89c991cdf0a16df16b6b2093d150b17a525695c6586a867ff

General

Target

10448b62b88d14b89c991cdf0a16df16b6b2093d150b17a525695c6586a867ff.exe
Size

260KB
MD5

7afc6d24be8597a755b2c186042e1274
SHA1

11486e29324e2c66f7f5881f4579fd94142b1bdc
SHA256

10448b62b88d14b89c991cdf0a16df16b6b2093d150b17a525695c6586a867ff
SHA512

2baac267f63317d29e1f769217676386977f02db164b82982f31362648ae5693032cacbe5d9bb665d4a7b2bb596266de5091a4130543a9f0df0d4f2675431ae3
SSDEEP

6144:sQaebYyFI08UsCpCqVu4eqsIIJ3aKl06pZoZ4Tv2QxQWnaJptxAco:JcIg3a36vY4TeQxjnexAc

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 4 IoCs

resource	yara_rule
behavioral2/memory/3480-135-0x0000000000400000-0x0000000000434000-memory.dmp	family_isrstealer
behavioral2/memory/3480-134-0x0000000000000000-mapping.dmp	family_isrstealer
behavioral2/memory/3480-144-0x0000000000400000-0x0000000000434000-memory.dmp	family_isrstealer
behavioral2/memory/3480-148-0x0000000000400000-0x0000000000434000-memory.dmp	family_isrstealer

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/5096-140-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5096-142-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5096-143-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5096-145-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5096-146-0x0000000000400000-0x0000000000453000-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 2 IoCs

description	pid	Process	procid_target
PID 4580 set thread context of 3480	4580	10448b62b88d14b89c991cdf0a16df16b6b2093d150b17a525695c6586a867ff.exe	83
PID 3480 set thread context of 5096	3480	10448b62b88d14b89c991cdf0a16df16b6b2093d150b17a525695c6586a867ff.exe	84

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4580	10448b62b88d14b89c991cdf0a16df16b6b2093d150b17a525695c6586a867ff.exe
3480	10448b62b88d14b89c991cdf0a16df16b6b2093d150b17a525695c6586a867ff.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 4580 wrote to memory of 3480	4580	10448b62b88d14b89c991cdf0a16df16b6b2093d150b17a525695c6586a867ff.exe	83
PID 4580 wrote to memory of 3480	4580	10448b62b88d14b89c991cdf0a16df16b6b2093d150b17a525695c6586a867ff.exe	83
PID 4580 wrote to memory of 3480	4580	10448b62b88d14b89c991cdf0a16df16b6b2093d150b17a525695c6586a867ff.exe	83
PID 4580 wrote to memory of 3480	4580	10448b62b88d14b89c991cdf0a16df16b6b2093d150b17a525695c6586a867ff.exe	83
PID 4580 wrote to memory of 3480	4580	10448b62b88d14b89c991cdf0a16df16b6b2093d150b17a525695c6586a867ff.exe	83
PID 4580 wrote to memory of 3480	4580	10448b62b88d14b89c991cdf0a16df16b6b2093d150b17a525695c6586a867ff.exe	83
PID 4580 wrote to memory of 3480	4580	10448b62b88d14b89c991cdf0a16df16b6b2093d150b17a525695c6586a867ff.exe	83
PID 4580 wrote to memory of 3480	4580	10448b62b88d14b89c991cdf0a16df16b6b2093d150b17a525695c6586a867ff.exe	83
PID 3480 wrote to memory of 5096	3480	10448b62b88d14b89c991cdf0a16df16b6b2093d150b17a525695c6586a867ff.exe	84
PID 3480 wrote to memory of 5096	3480	10448b62b88d14b89c991cdf0a16df16b6b2093d150b17a525695c6586a867ff.exe	84
PID 3480 wrote to memory of 5096	3480	10448b62b88d14b89c991cdf0a16df16b6b2093d150b17a525695c6586a867ff.exe	84
PID 3480 wrote to memory of 5096	3480	10448b62b88d14b89c991cdf0a16df16b6b2093d150b17a525695c6586a867ff.exe	84
PID 3480 wrote to memory of 5096	3480	10448b62b88d14b89c991cdf0a16df16b6b2093d150b17a525695c6586a867ff.exe	84
PID 3480 wrote to memory of 5096	3480	10448b62b88d14b89c991cdf0a16df16b6b2093d150b17a525695c6586a867ff.exe	84
PID 3480 wrote to memory of 5096	3480	10448b62b88d14b89c991cdf0a16df16b6b2093d150b17a525695c6586a867ff.exe	84
PID 3480 wrote to memory of 5096	3480	10448b62b88d14b89c991cdf0a16df16b6b2093d150b17a525695c6586a867ff.exe	84

C:\Users\Admin\AppData\Local\Temp\10448b62b88d14b89c991cdf0a16df16b6b2093d150b17a525695c6586a867ff.exe
"C:\Users\Admin\AppData\Local\Temp\10448b62b88d14b89c991cdf0a16df16b6b2093d150b17a525695c6586a867ff.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4580
- C:\Users\Admin\AppData\Local\Temp\10448b62b88d14b89c991cdf0a16df16b6b2093d150b17a525695c6586a867ff.exe
  "C:\Users\Admin\AppData\Local\Temp\10448b62b88d14b89c991cdf0a16df16b6b2093d150b17a525695c6586a867ff.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3480
- - C:\Users\Admin\AppData\Local\Temp\10448b62b88d14b89c991cdf0a16df16b6b2093d150b17a525695c6586a867ff.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\tmp.ini"
    3⤵
    PID:5096

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\tmp.ini

Filesize
5B

MD5
d1ea279fb5559c020a1b4137dc4de237

SHA1
db6f8988af46b56216a6f0daf95ab8c9bdb57400

SHA256
fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

SHA512
720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

Download Submit
memory/3480-135-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/3480-144-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/3480-148-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/5096-140-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5096-142-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5096-143-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5096-145-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5096-146-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

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