gurcu | 7e2371898d8c9121075812f5b9a57de66e7a11ac686042ac6bf59c07b2ad51a2

General

Target

t536f0746f287ffe6c9131c.exe
Size

386KB
MD5

e4d3a1d9c41d306200aa39ee9f718474
SHA1

7af7cd1865189d69c94fdb28d38b090d322fb134
SHA256

7e2371898d8c9121075812f5b9a57de66e7a11ac686042ac6bf59c07b2ad51a2
SHA512

6fa7a52bedf77f2ff42d4042a6d4381003e63b38038062b89b7a69395db1dd2a44ac449036f901dabf2d1aaffef0e463d7c347f5c360bb72d2cc3f932358d186
SSDEEP

6144:+2G9h7IouE6yrJTe4nPF9bCGV0fAaxYt:+th7d68e4P+GV0fApt

Score

10^/10

gurcu spyware stealer

Malware Config

Extracted

Family

gurcu

C2

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

Signatures

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

Deletes itself 1 IoCs

pid	Process
2096	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2492	t536f0746f287ffe6c9131c.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
2800	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2768	PING.EXE

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2300	t536f0746f287ffe6c9131c.exe
Token: SeDebugPrivilege	2492	t536f0746f287ffe6c9131c.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2300 wrote to memory of 2096	2300	t536f0746f287ffe6c9131c.exe	28
PID 2300 wrote to memory of 2096	2300	t536f0746f287ffe6c9131c.exe	28
PID 2300 wrote to memory of 2096	2300	t536f0746f287ffe6c9131c.exe	28
PID 2096 wrote to memory of 2760	2096	cmd.exe	30
PID 2096 wrote to memory of 2760	2096	cmd.exe	30
PID 2096 wrote to memory of 2760	2096	cmd.exe	30
PID 2096 wrote to memory of 2768	2096	cmd.exe	31
PID 2096 wrote to memory of 2768	2096	cmd.exe	31
PID 2096 wrote to memory of 2768	2096	cmd.exe	31
PID 2096 wrote to memory of 2800	2096	cmd.exe	32
PID 2096 wrote to memory of 2800	2096	cmd.exe	32
PID 2096 wrote to memory of 2800	2096	cmd.exe	32
PID 2096 wrote to memory of 2492	2096	cmd.exe	33
PID 2096 wrote to memory of 2492	2096	cmd.exe	33
PID 2096 wrote to memory of 2492	2096	cmd.exe	33

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\t536f0746f287ffe6c9131c.exe
"C:\Users\Admin\AppData\Local\Temp\t536f0746f287ffe6c9131c.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2300
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C chcp 65001 && ping 127.0.0.1 && schtasks /create /tn "t536f0746f287ffe6c9131c" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\TeamViewer\t536f0746f287ffe6c9131c.exe" /rl HIGHEST /f && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\t536f0746f287ffe6c9131c.exe" &&START "" "C:\Users\Admin\AppData\Local\TeamViewer\t536f0746f287ffe6c9131c.exe"
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:2096
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:2760
- - C:\Windows\system32\PING.EXE
    ping 127.0.0.1
    3⤵
    - Runs ping.exe
    PID:2768
- - C:\Windows\system32\schtasks.exe
    schtasks /create /tn "t536f0746f287ffe6c9131c" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\TeamViewer\t536f0746f287ffe6c9131c.exe" /rl HIGHEST /f
    3⤵
    - Creates scheduled task(s)
    PID:2800
- - C:\Users\Admin\AppData\Local\TeamViewer\t536f0746f287ffe6c9131c.exe
    "C:\Users\Admin\AppData\Local\TeamViewer\t536f0746f287ffe6c9131c.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2492

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

1

T1012

Remote System Discovery

1

T1018

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\TeamViewer\t536f0746f287ffe6c9131c.exe

Filesize
386KB

MD5
e4d3a1d9c41d306200aa39ee9f718474

SHA1
7af7cd1865189d69c94fdb28d38b090d322fb134

SHA256
7e2371898d8c9121075812f5b9a57de66e7a11ac686042ac6bf59c07b2ad51a2

SHA512
6fa7a52bedf77f2ff42d4042a6d4381003e63b38038062b89b7a69395db1dd2a44ac449036f901dabf2d1aaffef0e463d7c347f5c360bb72d2cc3f932358d186

Download Submit
C:\Users\Admin\AppData\Local\TeamViewer\t536f0746f287ffe6c9131c.exe

Filesize
386KB

MD5
e4d3a1d9c41d306200aa39ee9f718474

SHA1
7af7cd1865189d69c94fdb28d38b090d322fb134

SHA256
7e2371898d8c9121075812f5b9a57de66e7a11ac686042ac6bf59c07b2ad51a2

SHA512
6fa7a52bedf77f2ff42d4042a6d4381003e63b38038062b89b7a69395db1dd2a44ac449036f901dabf2d1aaffef0e463d7c347f5c360bb72d2cc3f932358d186

Download Submit
memory/2300-0-0x0000000000A90000-0x0000000000AF6000-memory.dmp

Filesize
408KB

Download
memory/2300-1-0x000007FEF60C0000-0x000007FEF6AAC000-memory.dmp

Filesize
9.9MB

Download
memory/2300-2-0x0000000002370000-0x00000000023F0000-memory.dmp

Filesize
512KB

Download
memory/2300-5-0x000007FEF60C0000-0x000007FEF6AAC000-memory.dmp

Filesize
9.9MB

Download
memory/2492-9-0x0000000000CC0000-0x0000000000D26000-memory.dmp

Filesize
408KB

Download
memory/2492-10-0x000007FEF56D0000-0x000007FEF60BC000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads