gurcu | c3439dd56bcf3921cdbfcbdff3f928d14ebd632b3411235657bf9f5452c1ab9d

Resubmissions

10-04-2024 02:41

240410-c6hmmsfd7z 10

10-04-2024 02:41

10-04-2024 02:41

10-04-2024 02:41

14-10-2023 01:33

Analysis

max time kernel
4s
max time network
506s
platform
windows11-21h2_x64
resource
win11-20240221-en
resource tags

arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
submitted
10-04-2024 02:41

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General

Target

x19a4f9f3d16fcc9779ba8ea79bf7.exe
Size

392KB
MD5

2299a17350433284e58bd0fcc10edf41
SHA1

d477f1cd55365db00ca77cc5459afabe1ffc80b3
SHA256

c3439dd56bcf3921cdbfcbdff3f928d14ebd632b3411235657bf9f5452c1ab9d
SHA512

123d18cf17b4bb0f0b16414039c2381f77e9f12c96a109d5847c760e4d7fb64f6c592f8f185a4c0375aade6754afd0abd6a196936adac405290f157829ae25a1
SSDEEP

6144:5cJGLvLE5hu6Me646G0D1ecme1x9b31v4n:uUvLr6k9b5ecmed1v4

Score

10^/10

gurcu spyware stealer

Malware Config

Extracted

Family

gurcu

https://api.telegram.org/bot6193093056:AAHzyNGUGS9aUG6CCx6ENLoXpCFLzEQywIQ/sendMessage?chat_id=1098292643

Signatures

Gurcu, WhiteSnake
Gurcu is a malware stealer written in C#.
stealer gurcu

Executes dropped EXE 1 IoCs

pid	Process
2324	x19a4f9f3d16fcc9779ba8ea79bf7.exe

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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
3476	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1472	PING.EXE

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2800	x19a4f9f3d16fcc9779ba8ea79bf7.exe
Token: SeDebugPrivilege	2324	x19a4f9f3d16fcc9779ba8ea79bf7.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2800 wrote to memory of 1776	2800	x19a4f9f3d16fcc9779ba8ea79bf7.exe	76
PID 2800 wrote to memory of 1776	2800	x19a4f9f3d16fcc9779ba8ea79bf7.exe	76
PID 1776 wrote to memory of 2320	1776	cmd.exe	78
PID 1776 wrote to memory of 2320	1776	cmd.exe	78
PID 1776 wrote to memory of 1472	1776	cmd.exe	79
PID 1776 wrote to memory of 1472	1776	cmd.exe	79
PID 1776 wrote to memory of 3476	1776	cmd.exe	80
PID 1776 wrote to memory of 3476	1776	cmd.exe	80
PID 1776 wrote to memory of 2324	1776	cmd.exe	81
PID 1776 wrote to memory of 2324	1776	cmd.exe	81

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\x19a4f9f3d16fcc9779ba8ea79bf7.exe
"C:\Users\Admin\AppData\Local\Temp\x19a4f9f3d16fcc9779ba8ea79bf7.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2800
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C chcp 65001 && ping 127.0.0.1 && schtasks /create /tn "x19a4f9f3d16fcc9779ba8ea79bf7" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\TeamViewer\x19a4f9f3d16fcc9779ba8ea79bf7.exe" /rl HIGHEST /f && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\x19a4f9f3d16fcc9779ba8ea79bf7.exe" &&START "" "C:\Users\Admin\AppData\Local\TeamViewer\x19a4f9f3d16fcc9779ba8ea79bf7.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1776
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:2320
- - C:\Windows\system32\PING.EXE
    ping 127.0.0.1
    3⤵
    - Runs ping.exe
    PID:1472
- - C:\Windows\system32\schtasks.exe
    schtasks /create /tn "x19a4f9f3d16fcc9779ba8ea79bf7" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\TeamViewer\x19a4f9f3d16fcc9779ba8ea79bf7.exe" /rl HIGHEST /f
    3⤵
    - Creates scheduled task(s)
    PID:3476
- - C:\Users\Admin\AppData\Local\TeamViewer\x19a4f9f3d16fcc9779ba8ea79bf7.exe
    "C:\Users\Admin\AppData\Local\TeamViewer\x19a4f9f3d16fcc9779ba8ea79bf7.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2324

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\x19a4f9f3d16fcc9779ba8ea79bf7.exe.log

Filesize
847B

MD5
486ebddc86ea8b3e965d390d22283a23

SHA1
eaffc047f067084867e8575c576a9ec60e094ba8

SHA256
50a57273ecb794e53b0622eb841341e2643c11f53fa47356e6e754ab2268171d

SHA512
0a50ba02250b38355a6f4fb94e40c61258a74031d9aea7cdf675f3e068f39ec0748ecf292aaf2f94b1963b9d66516ee79aa6c552617048e248774af0ff07189d

Download Submit
C:\Users\Admin\AppData\Local\TeamViewer\x19a4f9f3d16fcc9779ba8ea79bf7.exe

Filesize
392KB

MD5
2299a17350433284e58bd0fcc10edf41

SHA1
d477f1cd55365db00ca77cc5459afabe1ffc80b3

SHA256
c3439dd56bcf3921cdbfcbdff3f928d14ebd632b3411235657bf9f5452c1ab9d

SHA512
123d18cf17b4bb0f0b16414039c2381f77e9f12c96a109d5847c760e4d7fb64f6c592f8f185a4c0375aade6754afd0abd6a196936adac405290f157829ae25a1

Download Submit
memory/2324-11-0x00007FFF05C30000-0x00007FFF066F2000-memory.dmp

Filesize
10.8MB

Download
memory/2324-12-0x0000025D35EB0000-0x0000025D35EC0000-memory.dmp

Filesize
64KB

Download
memory/2800-0-0x0000022AFFC40000-0x0000022AFFCA8000-memory.dmp

Filesize
416KB

Download
memory/2800-1-0x00007FFF05C30000-0x00007FFF066F2000-memory.dmp

Filesize
10.8MB

Download
memory/2800-2-0x0000022A802B0000-0x0000022A802C0000-memory.dmp

Filesize
64KB

Download
memory/2800-6-0x00007FFF05C30000-0x00007FFF066F2000-memory.dmp

Filesize
10.8MB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads