isrstealer | 38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2

Analysis

max time kernel
135s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
19/11/2022, 07:56

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General

Target
38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe
Size 420KB
Sample221119-js2a6abc22
SHA256 38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2
MD5 3f22d23607e4bdaa606f3bc05c4e7d40
SHA1 70b913508d11009f241c2e948d337a750b654faa
SHA512 42a824b4465f42003e030cf109472fa14668e3ed9f1bb1c132eb6c22bbf2c05a79ec7f28f7d49ac9466eab987eef3edce471e7e99b50896891bb1da112e0c0bd
SSDEEP 6144:lI3F3FgcxNJZAX0bK9FMBLPeW41I10fTEEPlCg0p1/:lIVVgcxNJZAkjpSYEt01/
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

isrstealer stealer trojan

Malware Config

Signatures

ISR Stealer
ISR Stealer is a modified version of Hackhound Stealer written in visual basic.
trojan stealer isrstealer

ISR Stealer payload 3 IoCs

resource	yara_rule
behavioral2/memory/404-134-0x0000000000400000-0x0000000000439000-memory.dmp	family_isrstealer
behavioral2/memory/404-136-0x0000000000400000-0x0000000000439000-memory.dmp	family_isrstealer
behavioral2/memory/404-137-0x0000000000400000-0x0000000000439000-memory.dmp	family_isrstealer

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 604 set thread context of 2032	604	38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe	85
PID 2032 set thread context of 404	2032	38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe	86

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4068	404	WerFault.exe	86

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 604 wrote to memory of 2032	604	38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe	85
PID 604 wrote to memory of 2032	604	38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe	85
PID 604 wrote to memory of 2032	604	38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe	85
PID 2032 wrote to memory of 404	2032	38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe	86
PID 2032 wrote to memory of 404	2032	38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe	86
PID 2032 wrote to memory of 404	2032	38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe	86
PID 2032 wrote to memory of 404	2032	38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe	86
PID 2032 wrote to memory of 404	2032	38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe	86
PID 2032 wrote to memory of 404	2032	38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe	86
PID 2032 wrote to memory of 404	2032	38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe	86
PID 2032 wrote to memory of 404	2032	38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe	86
PID 2032 wrote to memory of 404	2032	38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe	86
PID 2032 wrote to memory of 404	2032	38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe	86
PID 2032 wrote to memory of 404	2032	38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe	86

C:\Users\Admin\AppData\Local\Temp\38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe
"C:\Users\Admin\AppData\Local\Temp\38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:604
- C:\Users\Admin\AppData\Local\Temp\38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe
  "C:\Users\Admin\AppData\Local\Temp\38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:2032
- - C:\Users\Admin\AppData\Local\Temp\38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe
    "C:\Users\Admin\AppData\Local\Temp\38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe"
    3⤵
    PID:404
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 404 -s 296
      4⤵
      Program crash
      PID:4068

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 404 -ip 404
1⤵
PID:4604

Network

MITRE ATT&CK Matrix

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Downloads

memory/404-134-0x0000000000400000-0x0000000000439000-memory.dmp

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memory/404-136-0x0000000000400000-0x0000000000439000-memory.dmp

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memory/404-137-0x0000000000400000-0x0000000000439000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix

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Downloads