isrstealer | d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56

General

Target

d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe
Size

354KB
MD5

b2ec0902adba3b24f3131e158e1ba8a0
SHA1

7251fc7a660ea55e91075c4ded01dd7281454924
SHA256

d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56
SHA512

91f43c8121a0a19703bcfb281b4c21f8075c15efc439b99d44e72755e06337a84f5ebd4e63623af48bbc45e4a7ccffbe0cc6913798a272da63e195d74a2412ea
SSDEEP

6144:o5Iq92w/FkXj4YigClM7pSXtQW6q8fPLkFqqmdkh8uQ549rn3p8l0:oNNeT4UCKpS9QU8wFqsLl998l

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 2 IoCs

resource	yara_rule
behavioral2/memory/1608-135-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral2/memory/1608-137-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3980-142-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3980-144-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3980-145-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3980-146-0x0000000000400000-0x0000000000453000-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

description	pid	Process	procid_target
PID 2852 set thread context of 1608	2852	d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe	86
PID 1608 set thread context of 3980	1608	d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe	87
PID 1608 set thread context of 3036	1608	d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe	90

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2880	3036	WerFault.exe	90

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2852	d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1608	d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2852 wrote to memory of 1608	2852	d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe	86
PID 2852 wrote to memory of 1608	2852	d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe	86
PID 2852 wrote to memory of 1608	2852	d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe	86
PID 2852 wrote to memory of 1608	2852	d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe	86
PID 2852 wrote to memory of 1608	2852	d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe	86
PID 2852 wrote to memory of 1608	2852	d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe	86
PID 2852 wrote to memory of 1608	2852	d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe	86
PID 2852 wrote to memory of 1608	2852	d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe	86
PID 1608 wrote to memory of 3980	1608	d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe	87
PID 1608 wrote to memory of 3980	1608	d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe	87
PID 1608 wrote to memory of 3980	1608	d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe	87
PID 1608 wrote to memory of 3980	1608	d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe	87
PID 1608 wrote to memory of 3980	1608	d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe	87
PID 1608 wrote to memory of 3980	1608	d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe	87
PID 1608 wrote to memory of 3980	1608	d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe	87
PID 1608 wrote to memory of 3980	1608	d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe	87
PID 1608 wrote to memory of 3036	1608	d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe	90
PID 1608 wrote to memory of 3036	1608	d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe	90
PID 1608 wrote to memory of 3036	1608	d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe	90
PID 1608 wrote to memory of 3036	1608	d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe	90
PID 1608 wrote to memory of 3036	1608	d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe	90
PID 1608 wrote to memory of 3036	1608	d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe	90
PID 1608 wrote to memory of 3036	1608	d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe	90
PID 1608 wrote to memory of 3036	1608	d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe	90

C:\Users\Admin\AppData\Local\Temp\d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe
"C:\Users\Admin\AppData\Local\Temp\d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2852
- C:\Users\Admin\AppData\Local\Temp\d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe
  C:\Users\Admin\AppData\Local\Temp\d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1608
- - C:\Users\Admin\AppData\Local\Temp\d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\9jymQCymcL.ini"
    3⤵
    PID:3980
- - C:\Users\Admin\AppData\Local\Temp\d1ae621a5ae448b701a5851ceed40a62af5182e38ebf806ee771cb3f2f272f56.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\7bZKI6E9jR.ini"
    3⤵
    PID:3036
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3036 -s 72
      4⤵
      Program crash
      PID:2880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 3036 -ip 3036
1⤵
PID:2324

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\9jymQCymcL.ini

Filesize
5B

MD5
d1ea279fb5559c020a1b4137dc4de237

SHA1
db6f8988af46b56216a6f0daf95ab8c9bdb57400

SHA256
fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

SHA512
720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

Download Submit
memory/1608-135-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1608-137-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2852-133-0x0000000074650000-0x0000000074C01000-memory.dmp

Filesize
5.7MB

Download
memory/2852-140-0x0000000074650000-0x0000000074C01000-memory.dmp

Filesize
5.7MB

Download
memory/2852-132-0x0000000074650000-0x0000000074C01000-memory.dmp

Filesize
5.7MB

Download
memory/3980-145-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3980-146-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3980-144-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3980-142-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

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