isrstealer | 38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2

Analysis

max time kernel
46s
max time network
49s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
19/11/2022, 07:56

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General

Target

38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe
Size

420KB
MD5

3f22d23607e4bdaa606f3bc05c4e7d40
SHA1

70b913508d11009f241c2e948d337a750b654faa
SHA256

38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2
SHA512

42a824b4465f42003e030cf109472fa14668e3ed9f1bb1c132eb6c22bbf2c05a79ec7f28f7d49ac9466eab987eef3edce471e7e99b50896891bb1da112e0c0bd
SSDEEP

6144:lI3F3FgcxNJZAX0bK9FMBLPeW41I10fTEEPlCg0p1/:lIVVgcxNJZAkjpSYEt01/

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 4 IoCs

resource	yara_rule
behavioral1/memory/1628-62-0x0000000000400000-0x0000000000439000-memory.dmp	family_isrstealer
behavioral1/memory/1628-63-0x0000000000401110-mapping.dmp	family_isrstealer
behavioral1/memory/1628-66-0x0000000000400000-0x0000000000439000-memory.dmp	family_isrstealer
behavioral1/memory/1628-68-0x0000000000400000-0x0000000000439000-memory.dmp	family_isrstealer

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 756 set thread context of 1628	756	38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe	28

Program crash 1 IoCs

pid	pid_target	Process	procid_target
976	1628	WerFault.exe	28

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 756 wrote to memory of 1628	756	38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe	28
PID 756 wrote to memory of 1628	756	38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe	28
PID 756 wrote to memory of 1628	756	38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe	28
PID 756 wrote to memory of 1628	756	38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe	28
PID 756 wrote to memory of 1628	756	38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe	28
PID 756 wrote to memory of 1628	756	38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe	28
PID 756 wrote to memory of 1628	756	38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe	28
PID 756 wrote to memory of 1628	756	38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe	28
PID 756 wrote to memory of 1628	756	38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe	28
PID 756 wrote to memory of 1628	756	38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe	28
PID 756 wrote to memory of 1628	756	38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe	28
PID 1628 wrote to memory of 976	1628	38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe	29
PID 1628 wrote to memory of 976	1628	38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe	29
PID 1628 wrote to memory of 976	1628	38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe	29
PID 1628 wrote to memory of 976	1628	38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe	29

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:756
- C:\Users\Admin\AppData\Local\Temp\38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe
  "C:\Users\Admin\AppData\Local\Temp\38111d6455b0405d795939272278046b84ccd53af634e4a4c50d41a42e660cb2.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1628
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1628 -s 116
    3⤵
    - Program crash
    PID:976

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/1628-54-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/1628-55-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/1628-57-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/1628-58-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/1628-59-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/1628-60-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/1628-62-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/1628-65-0x0000000075831000-0x0000000075833000-memory.dmp

Filesize
8KB

Download
memory/1628-66-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/1628-68-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix

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Downloads