gurcu | 41505242cdbf259aada52b773daeec33d239e4aefd685ba9e406d2cf2f9871a4 | Triage™

Resubmissions

10/04/2024, 02:25

240410-cwlljsbh9910

10/04/2024, 02:25

240410-cwlasafc5v10

10/04/2024, 02:25

240410-cwkn9afc5t10

10/04/2024, 02:25

240410-cwkdgsfc5s10

14/10/2023, 04:25

231014-e12vfagc2y10

Analysis

max time kernel
316s
max time network
1587s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
10/04/2024, 02:25

Sharing

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Report Analysis Logs

General

Target
Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Size 289KB
Sample240410-cwlljsbh99
SHA256 41505242cdbf259aada52b773daeec33d239e4aefd685ba9e406d2cf2f9871a4
MD5 88cfc2ccc0575567122d1d233f9eb1c3
SHA1 4be67d0d801197f88c14d62f4495f17e89fc471f
SHA512 a2dd9ab7a2fe2a6d596c78394f65956f3e8973940229b305e2d763be69ff9f27b1450b5e08ca57cd0886a873fb663daad20ca94d9262a6c80a582dfc5f2e42b7
SSDEEP 6144:uHClm6SWPoK5Z0EwVSmRPQp+L5v9bbSUpi:uHCnZxb8hLLSUpi
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

gurcu collection spyware stealer

Malware Config

Extracted

Family

gurcu

C2

https://api.telegram.org/bot6176004110:AAFKA5be4dMwA848HWxzYIzrzzOGIHMOJGc/sendMessage?chat_id=615133582

Signatures

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

Executes dropped EXE 2 IoCs

pid	Process
508	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
1996	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe

Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
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 Microsoft Outlook profiles 1 TTPs 6 IoCs

Email Collection

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-873560699-1074803302-2326074425-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Key opened	\REGISTRY\USER\S-1-5-21-873560699-1074803302-2326074425-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Key opened	\REGISTRY\USER\S-1-5-21-873560699-1074803302-2326074425-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Key opened	\REGISTRY\USER\S-1-5-21-873560699-1074803302-2326074425-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Key opened	\REGISTRY\USER\S-1-5-21-873560699-1074803302-2326074425-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Key opened	\REGISTRY\USER\S-1-5-21-873560699-1074803302-2326074425-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe

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
28	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.

Scheduled Task/Job

pid	Process
5032	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

pid	Process
4812	PING.EXE

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	5080	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Token: SeDebugPrivilege	508	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Token: SeDebugPrivilege	1996	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 5080 wrote to memory of 2840	5080	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	73
PID 5080 wrote to memory of 2840	5080	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	73
PID 2840 wrote to memory of 588	2840	cmd.exe	75
PID 2840 wrote to memory of 588	2840	cmd.exe	75
PID 2840 wrote to memory of 4812	2840	cmd.exe	76
PID 2840 wrote to memory of 4812	2840	cmd.exe	76
PID 2840 wrote to memory of 5032	2840	cmd.exe	77
PID 2840 wrote to memory of 5032	2840	cmd.exe	77
PID 2840 wrote to memory of 508	2840	cmd.exe	78
PID 2840 wrote to memory of 508	2840	cmd.exe	78

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

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-873560699-1074803302-2326074425-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-873560699-1074803302-2326074425-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe

C:\Users\Admin\AppData\Local\Temp\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
"C:\Users\Admin\AppData\Local\Temp\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5080
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C chcp 65001 && ping 127.0.0.1 && schtasks /create /tn "Xd2c386a3a6edfe99de10f6ce6b3659c4809a" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe" /rl HIGHEST /f && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe" &&START "" "C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2840
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:588
- - C:\Windows\system32\PING.EXE
    ping 127.0.0.1
    3⤵
    - Runs ping.exe
    PID:4812
- - C:\Windows\system32\schtasks.exe
    schtasks /create /tn "Xd2c386a3a6edfe99de10f6ce6b3659c4809a" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe" /rl HIGHEST /f
    3⤵
    - Creates scheduled task(s)
    PID:5032
- - C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
    "C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe"
    3⤵
    - Executes dropped EXE
    - Accesses Microsoft Outlook profiles
    - Suspicious use of AdjustPrivilegeToken
    PID:508

C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
1⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1996

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

Persistence

Scheduled Task/Job

Privilege Escalation

Scheduled Task/Job

Defense Evasion

Credential Access

Unsecured Credentials

Credentials In Files

Credentials in Registry

Discovery

Query Registry

Remote System Discovery

System Information Discovery

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe.log
Size 847B
SHA256 cae801b0499949178298c1c1a083f7c0febb971d262be9c9588437af66c76ef0
MD5 a908a7c6e93edeb3e400780b6fe62dde
SHA1 36e2b437f41443f6b41b45b35a0f97b2cd94123d
SHA512 deb437dcb1440d37bcd61dfa43be05fd01856a1d1e59aa5b2dfa142e9ae584b0577eea024edb99d8e74e3a1b606bb7ae3b4f9cd8eb30813e67dda678b9319cbe
MD5 SHA1 SHA512

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Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe

Path C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Size 289KB
SHA256 41505242cdbf259aada52b773daeec33d239e4aefd685ba9e406d2cf2f9871a4
MD5 88cfc2ccc0575567122d1d233f9eb1c3
SHA1 4be67d0d801197f88c14d62f4495f17e89fc471f
SHA512 a2dd9ab7a2fe2a6d596c78394f65956f3e8973940229b305e2d763be69ff9f27b1450b5e08ca57cd0886a873fb663daad20ca94d9262a6c80a582dfc5f2e42b7
SSDEEP 6144:uHClm6SWPoK5Z0EwVSmRPQp+L5v9bbSUpi:uHCnZxb8hLLSUpi
MD5 SHA1 SHA512 SSDEEP

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port.dat

Path C:\Users\Admin\AppData\Local\xdh16uwiax\port.dat
Size 4B
SHA256 ec351e24af73a8d6f9c6ac57fa77be9f24ae014b24a259a6ad708fca1b6605ab
MD5 f23b3df742bb9fbf6bbf30a05150ac19
SHA1 dd4caaf3e25495aceed13fb06768c4705820688a
SHA512 9573fb4af604e3d397166582465e06114f47214323d4a2300bca819442089941d65bb700e9f270ab0dacd48a9d78e0a01b07d6f655bfcb9a2bfa48bd9848b74f
MD5 SHA1 SHA512

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memory/508-12-0x00000295A2CE0000-0x00000295A2CF0000-memory.dmp

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memory/508-21-0x00000295A2CE0000-0x00000295A2CF0000-memory.dmp

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memory/508-20-0x00007FF8723B0000-0x00007FF872D9C000-memory.dmp

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memory/508-11-0x00007FF8723B0000-0x00007FF872D9C000-memory.dmp

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memory/1996-17-0x000002D042250000-0x000002D042260000-memory.dmp

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memory/1996-16-0x00007FF8723B0000-0x00007FF872D9C000-memory.dmp

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memory/1996-22-0x00007FF8723B0000-0x00007FF872D9C000-memory.dmp

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memory/1996-23-0x000002D042250000-0x000002D042260000-memory.dmp

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memory/5080-0-0x0000022E8FCA0000-0x0000022E8FCEE000-memory.dmp

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memory/5080-6-0x00007FF8723B0000-0x00007FF872D9C000-memory.dmp

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memory/5080-2-0x0000022E900F0000-0x0000022E90100000-memory.dmp

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memory/5080-1-0x00007FF8723B0000-0x00007FF872D9C000-memory.dmp

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