isrstealer | a086fb4150e6186e53bb22819573f3739a934a2074dbc49578b559b4f7a492a1

Analysis

max time kernel
116s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
20-10-2022 22:51

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General

Target

a086fb4150e6186e53bb22819573f3739a934a2074dbc49578b559b4f7a492a1.exe
Size

228KB
MD5

6756d993d92840e150f1e2048129dd04
SHA1

6a093a18953c6d5caddb07b1abf38fa426a1446a
SHA256

a086fb4150e6186e53bb22819573f3739a934a2074dbc49578b559b4f7a492a1
SHA512

2681ce30f9beaeeb927d44ff4667fafdb182aa863e8d7830182c8da704bb8a013ff39bfab10517642d6d998687a59f5512bf3b3aaa004dbfc763db9245ae5024
SSDEEP

6144:s3bdXPx3BdIKCC0ef//uXltKc+LVsz9b8RTJ:6BdFeCXuLKcCVsz6

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

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2676-135-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2676-137-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2676-138-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2676-139-0x0000000000400000-0x0000000000453000-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 1 IoCs

description	pid	Process	procid_target
PID 2056 set thread context of 2676	2056	a086fb4150e6186e53bb22819573f3739a934a2074dbc49578b559b4f7a492a1.exe	81

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2056	a086fb4150e6186e53bb22819573f3739a934a2074dbc49578b559b4f7a492a1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2056 wrote to memory of 2676	2056	a086fb4150e6186e53bb22819573f3739a934a2074dbc49578b559b4f7a492a1.exe	81
PID 2056 wrote to memory of 2676	2056	a086fb4150e6186e53bb22819573f3739a934a2074dbc49578b559b4f7a492a1.exe	81
PID 2056 wrote to memory of 2676	2056	a086fb4150e6186e53bb22819573f3739a934a2074dbc49578b559b4f7a492a1.exe	81
PID 2056 wrote to memory of 2676	2056	a086fb4150e6186e53bb22819573f3739a934a2074dbc49578b559b4f7a492a1.exe	81
PID 2056 wrote to memory of 2676	2056	a086fb4150e6186e53bb22819573f3739a934a2074dbc49578b559b4f7a492a1.exe	81
PID 2056 wrote to memory of 2676	2056	a086fb4150e6186e53bb22819573f3739a934a2074dbc49578b559b4f7a492a1.exe	81
PID 2056 wrote to memory of 2676	2056	a086fb4150e6186e53bb22819573f3739a934a2074dbc49578b559b4f7a492a1.exe	81
PID 2056 wrote to memory of 2676	2056	a086fb4150e6186e53bb22819573f3739a934a2074dbc49578b559b4f7a492a1.exe	81

C:\Users\Admin\AppData\Local\Temp\a086fb4150e6186e53bb22819573f3739a934a2074dbc49578b559b4f7a492a1.exe
"C:\Users\Admin\AppData\Local\Temp\a086fb4150e6186e53bb22819573f3739a934a2074dbc49578b559b4f7a492a1.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2056
- C:\Users\Admin\AppData\Local\Temp\a086fb4150e6186e53bb22819573f3739a934a2074dbc49578b559b4f7a492a1.exe
  /scomma "C:\Users\Admin\AppData\Local\Temp\2QlbFpjWQk.ini"
  2⤵
  PID:2676

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\2QlbFpjWQk.ini

Filesize
5B

MD5
d1ea279fb5559c020a1b4137dc4de237

SHA1
db6f8988af46b56216a6f0daf95ab8c9bdb57400

SHA256
fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

SHA512
720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

Download Submit
memory/2676-135-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2676-137-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2676-138-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2676-139-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download