gurcu | c47ff32e567affa5ddc1c257c8760a340a0e05fb20be86245fe3a541d42fe66b

Analysis

max time kernel
93s
max time network
127s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
09-04-2023 19:32

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General

Target

c47ff32e567affa5ddc1c257c8760a340a0e05fb20be86245fe3a541d42fe66b.exe
Size

56KB
MD5

61cbfdab621a495cdbad9f61c794f3af
SHA1

3ca2df7512e03c6c4a3271b42e1a71587e0ae41e
SHA256

c47ff32e567affa5ddc1c257c8760a340a0e05fb20be86245fe3a541d42fe66b
SHA512

d0e7c6ec435ad28c6057774e2c5113a9666cb391a8ca8071493798ab0e7bffe94bef1886b44b8963fbfb707059046fcab59df9f24c441470c519cf5293d058f7
SSDEEP

768:RYQp+rLLfWIe/rlzz/N85cbk9zBLOdYygDutQopbJ7nUSBaOL:RYQp+7Ze/rNzrbk9BKdT9Tp5nUSBaOL

Score

10^/10

gurcu spyware stealer

Malware Config

Signatures

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Control Panel\International\Geo\Nation	c47ff32e567affa5ddc1c257c8760a340a0e05fb20be86245fe3a541d42fe66b.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
T1081

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
5	ip-api.com

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

System Information Discovery
T1082

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4440	PING.EXE

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3752	c47ff32e567affa5ddc1c257c8760a340a0e05fb20be86245fe3a541d42fe66b.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3752	c47ff32e567affa5ddc1c257c8760a340a0e05fb20be86245fe3a541d42fe66b.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3752 wrote to memory of 4796	3752	c47ff32e567affa5ddc1c257c8760a340a0e05fb20be86245fe3a541d42fe66b.exe	80
PID 3752 wrote to memory of 4796	3752	c47ff32e567affa5ddc1c257c8760a340a0e05fb20be86245fe3a541d42fe66b.exe	80
PID 4796 wrote to memory of 1948	4796	cmd.exe	82
PID 4796 wrote to memory of 1948	4796	cmd.exe	82
PID 4796 wrote to memory of 4440	4796	cmd.exe	83
PID 4796 wrote to memory of 4440	4796	cmd.exe	83

C:\Users\Admin\AppData\Local\Temp\c47ff32e567affa5ddc1c257c8760a340a0e05fb20be86245fe3a541d42fe66b.exe
"C:\Users\Admin\AppData\Local\Temp\c47ff32e567affa5ddc1c257c8760a340a0e05fb20be86245fe3a541d42fe66b.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3752
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C chcp 65001 && ping 127.0.0.1 && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\c47ff32e567affa5ddc1c257c8760a340a0e05fb20be86245fe3a541d42fe66b.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4796
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:1948
- - C:\Windows\system32\PING.EXE
    ping 127.0.0.1
    3⤵
    - Runs ping.exe
    PID:4440

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

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

memory/3752-133-0x000002D3FFF80000-0x000002D3FFF94000-memory.dmp

Filesize
80KB

Download
memory/3752-134-0x000002D381BB0000-0x000002D381BC0000-memory.dmp

Filesize
64KB

Download
memory/3752-135-0x000002D400050000-0x000002D4000A0000-memory.dmp

Filesize
320KB

Download
memory/3752-137-0x000002D39B8D0000-0x000002D39BA79000-memory.dmp

Filesize
1.7MB

Download