gurcu | 2869db18f346049bcc9e378a77ed809fd9caad2fd2bd4d9f58d6e728c784b3eb

General

Target

f19126b02be0b331982e041dc9bcad51.exe
Size

223KB
MD5

f19126b02be0b331982e041dc9bcad51
SHA1

10ab04a6f24ce4540a564041375d8275a691e409
SHA256

2869db18f346049bcc9e378a77ed809fd9caad2fd2bd4d9f58d6e728c784b3eb
SHA512

e6158c6c1563ff3f013b97c0b5da7b5f3301657b948ddb1198ebaea7ce5fc3a9c9f3f449646f45c070514e8796e6315a2afaab7894ba20e3b857a5dc504d093c
SSDEEP

3072:fvfoUJQCw+d+Uoj9DVbDWb0Cdfc6mdSCFytxpNS17e+8TNBfxz9l:fvfoOQHelqJbD4HJe7FytVSle+8TxX

Score

10^/10

gurcu spyware stealer

Malware Config

Extracted

Family

gurcu

C2

https://api.telegram.org/bot5975822207:AAFJtzAlzLoF8RfkpKUagQJGRi0ksib6w3g/sendMessage?chat_id=1396661331

Signatures

Gurcu, WhiteSnake
Gurcu is a malware stealer 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	f19126b02be0b331982e041dc9bcad51.exe

Executes dropped EXE 2 IoCs

pid	Process
264	f19126b02be0b331982e041dc9bcad51.exe
3088	f19126b02be0b331982e041dc9bcad51.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
20	ip-api.com

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

T1053

pid	Process
1120	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1408	PING.EXE

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4776	f19126b02be0b331982e041dc9bcad51.exe
Token: SeDebugPrivilege	264	f19126b02be0b331982e041dc9bcad51.exe
Token: SeDebugPrivilege	3088	f19126b02be0b331982e041dc9bcad51.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4776 wrote to memory of 2408	4776	f19126b02be0b331982e041dc9bcad51.exe	83
PID 4776 wrote to memory of 2408	4776	f19126b02be0b331982e041dc9bcad51.exe	83
PID 2408 wrote to memory of 2688	2408	cmd.exe	85
PID 2408 wrote to memory of 2688	2408	cmd.exe	85
PID 2408 wrote to memory of 1408	2408	cmd.exe	86
PID 2408 wrote to memory of 1408	2408	cmd.exe	86
PID 2408 wrote to memory of 1120	2408	cmd.exe	87
PID 2408 wrote to memory of 1120	2408	cmd.exe	87
PID 2408 wrote to memory of 264	2408	cmd.exe	88
PID 2408 wrote to memory of 264	2408	cmd.exe	88

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\f19126b02be0b331982e041dc9bcad51.exe
"C:\Users\Admin\AppData\Local\Temp\f19126b02be0b331982e041dc9bcad51.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4776
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C chcp 65001 && ping 127.0.0.1 && schtasks /create /tn "f19126b02be0b331982e041dc9bcad51" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\NET.Framework\f19126b02be0b331982e041dc9bcad51.exe" /rl HIGHEST /f && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\f19126b02be0b331982e041dc9bcad51.exe" &&START "" "C:\Users\Admin\AppData\Local\NET.Framework\f19126b02be0b331982e041dc9bcad51.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2408
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:2688
- - C:\Windows\system32\PING.EXE
    ping 127.0.0.1
    3⤵
    - Runs ping.exe
    PID:1408
- - C:\Windows\system32\schtasks.exe
    schtasks /create /tn "f19126b02be0b331982e041dc9bcad51" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\NET.Framework\f19126b02be0b331982e041dc9bcad51.exe" /rl HIGHEST /f
    3⤵
    - Creates scheduled task(s)
    PID:1120
- - C:\Users\Admin\AppData\Local\NET.Framework\f19126b02be0b331982e041dc9bcad51.exe
    "C:\Users\Admin\AppData\Local\NET.Framework\f19126b02be0b331982e041dc9bcad51.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:264

C:\Users\Admin\AppData\Local\NET.Framework\f19126b02be0b331982e041dc9bcad51.exe
C:\Users\Admin\AppData\Local\NET.Framework\f19126b02be0b331982e041dc9bcad51.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3088

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

2

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

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\Microsoft\CLR_v4.0\UsageLogs\f19126b02be0b331982e041dc9bcad51.exe.log

Filesize
1KB

MD5
fc1be6f3f52d5c841af91f8fc3f790cb

SHA1
ac79b4229e0a0ce378ae22fc6104748c5f234511

SHA256
6da862f7c7feffca99cd58712ece93928c6ca6aed617f5d8c10a4718eaa2a910

SHA512
2f46165017309ee1a0c1b23e30a71e52e86ad8933e2649bf58c3f4628c5aa75659f5b8f6be32c2882f220b2f3ff2fd50d8766bf0a3708c94c2c634c051a05ea6

Download Submit
C:\Users\Admin\AppData\Local\NET.Framework\f19126b02be0b331982e041dc9bcad51.exe

Filesize
223KB

MD5
f19126b02be0b331982e041dc9bcad51

SHA1
10ab04a6f24ce4540a564041375d8275a691e409

SHA256
2869db18f346049bcc9e378a77ed809fd9caad2fd2bd4d9f58d6e728c784b3eb

SHA512
e6158c6c1563ff3f013b97c0b5da7b5f3301657b948ddb1198ebaea7ce5fc3a9c9f3f449646f45c070514e8796e6315a2afaab7894ba20e3b857a5dc504d093c

Download Submit
C:\Users\Admin\AppData\Local\NET.Framework\f19126b02be0b331982e041dc9bcad51.exe

Filesize
223KB

MD5
f19126b02be0b331982e041dc9bcad51

SHA1
10ab04a6f24ce4540a564041375d8275a691e409

SHA256
2869db18f346049bcc9e378a77ed809fd9caad2fd2bd4d9f58d6e728c784b3eb

SHA512
e6158c6c1563ff3f013b97c0b5da7b5f3301657b948ddb1198ebaea7ce5fc3a9c9f3f449646f45c070514e8796e6315a2afaab7894ba20e3b857a5dc504d093c

Download Submit
C:\Users\Admin\AppData\Local\NET.Framework\f19126b02be0b331982e041dc9bcad51.exe

Filesize
223KB

MD5
f19126b02be0b331982e041dc9bcad51

SHA1
10ab04a6f24ce4540a564041375d8275a691e409

SHA256
2869db18f346049bcc9e378a77ed809fd9caad2fd2bd4d9f58d6e728c784b3eb

SHA512
e6158c6c1563ff3f013b97c0b5da7b5f3301657b948ddb1198ebaea7ce5fc3a9c9f3f449646f45c070514e8796e6315a2afaab7894ba20e3b857a5dc504d093c

Download Submit
C:\Users\Admin\AppData\Local\i86t5yhbwx\port.dat

Filesize
4B

MD5
a0dc078ca0d99b5ebb465a9f1cad54ba

SHA1
b23ff75b045416c0cc927aef29e2d83950ea0002

SHA256
b4dea4ca32aa84b8d96bfd015459da8d00fed4ba6e72e185c4016cb9915c4405

SHA512
3cc8bc9a47ef9d9b0e5d45b8d58163a62edadcdbae0d3bb8f1a3e62a35fb6dafe3da033243cb7eb8cf317fae92cc5d2789badcf2c59259181dc51e281d90be9d

Download Submit
memory/264-144-0x00000143A2560000-0x00000143A2570000-memory.dmp

Filesize
64KB

Download
memory/264-145-0x00000143A2560000-0x00000143A2570000-memory.dmp

Filesize
64KB

Download
memory/3088-147-0x00000184DB500000-0x00000184DB510000-memory.dmp

Filesize
64KB

Download
memory/4776-133-0x0000020315740000-0x000002031577C000-memory.dmp

Filesize
240KB

Download
memory/4776-134-0x000002032FDB0000-0x000002032FDC0000-memory.dmp

Filesize
64KB

Download
memory/4776-137-0x000002032FDB0000-0x000002032FDC0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads