shurk | 4a20d88652a74ef776db2ace59a63815f3c446fb62f7d443145a97158ec19436

Analysis

max time kernel
119s
max time network
125s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
01-10-2023 19:52

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General

Target

4a20d88652a74ef776db2ace59a63815f3c446fb62f7d443145a97158ec19436_JC.exe
Size

11.3MB
MD5

70928f07076ca83678812570f1e9f05c
SHA1

9900429544963a60441ee1ef841eed87eeebf69a
SHA256

4a20d88652a74ef776db2ace59a63815f3c446fb62f7d443145a97158ec19436
SHA512

71cc7c856950194da15d7fab029d47ce697807973bf501a41aca7fe56df54f513cd63d47a098a7842262f7edc915b79748679468586bcbb88b0284b46d59329c
SSDEEP

49152:fRBZj7amA9VSLGmJH77dPh89WU4OYDVD/ZnxMBStAkAqvlABXj6TKol4NWFg/Bbv:pW

Score

10^/10

shurk infostealer spyware stealer

Malware Config

Signatures

Shurk
Shurk is an infostealer, written in C++ which appeared in 2021.
infostealer shurk

Shurk Stealer payload 1 IoCs

resource	yara_rule
behavioral1/memory/1256-1-0x000007FFFF790000-0x000007FFFFFAB000-memory.dmp	shurk_stealer

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
T1552.001
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
2	checkip.amazonaws.com

GoLang User-Agent 3 IoCs

Uses default user-agent string defined by GoLang HTTP packages.

description	flow	ioc
HTTP User-Agent header	3	Go-http-client/1.1
HTTP User-Agent header	5	Go-http-client/1.1
HTTP User-Agent header	6	Go-http-client/1.1

C:\Users\Admin\AppData\Local\Temp\4a20d88652a74ef776db2ace59a63815f3c446fb62f7d443145a97158ec19436_JC.exe
"C:\Users\Admin\AppData\Local\Temp\4a20d88652a74ef776db2ace59a63815f3c446fb62f7d443145a97158ec19436_JC.exe"
1⤵
PID:1256

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1256-0-0x0000000048730000-0x0000000048EE2000-memory.dmp

Filesize
7.7MB

Download
memory/1256-1-0x000007FFFF790000-0x000007FFFFFAB000-memory.dmp

Filesize
8.1MB

Download
memory/1256-14-0x0000000048730000-0x0000000048EE2000-memory.dmp

Filesize
7.7MB

Download