gurcu | b7104015108dc762613ef8971ad5526e1ebe18eedffe7dc6e344d639aa57b39c

General

Target

vgabfz.exe
Size

154KB
MD5

2d75031f20fe869431212b7b3f90fcde
SHA1

f2af4a940dfa314bca2d342d939fc32fe7afa6cc
SHA256

b7104015108dc762613ef8971ad5526e1ebe18eedffe7dc6e344d639aa57b39c
SHA512

b581b971c1cf3d077abfb91f05e2a5224f2748fc5a749ecd644dda3bae3311cff56eb64dc84b3d281578f12024cb4068759e5ef00ffca4a6cfba6af0ebb39342
SSDEEP

3072:2734otfn9bTUz9bmGPV5wSlZpF3KdDlQOp:27IotPpTUz9bmkkSlbO

Score

10^/10

gurcu collection discovery persistence privilege_escalation spyware stealer

Malware Config

Extracted

Family

gurcu

C2

https://api.telegram.org/bot8044316559:AAFBKJlXZImRdKtbDCT2g5_pK-tOr4SgrOo/sendMessage?chat_id=7099179555

http://96.9.124.250:8070

http://209.38.221.184:8080

http://46.235.26.83:8080

http://147.28.185.29:80

http://206.166.251.4:8080

http://51.159.4.50:8080

http://167.235.70.96:8080

http://194.164.198.113:8080

http://132.145.17.167:9090

https://5.196.181.135:443

http://116.202.101.219:8080

https://185.217.98.121:443

http://185.217.98.121:8080

http://159.203.174.113:8090

http://107.161.20.142:8080

https://192.99.196.191:443

http://65.49.205.24:8080

https://154.9.207.142:443

http://67.230.176.97:8080

Signatures

Gurcu family
gurcu
Gurcu, WhiteSnake
Gurcu aka WhiteSnake is a malware stealer written in C#.
stealer gurcu
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 3 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

Credentials from Web Browsers
T1555.003

Accesses Microsoft Outlook profiles 1 TTPs 9 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3975168204-1612096350-4002976354-1000\Software\Microsoft\Office\13.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vgabfz.exe
Key opened	\REGISTRY\USER\S-1-5-21-3975168204-1612096350-4002976354-1000\Software\Microsoft\Office\14.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vgabfz.exe
Key opened	\REGISTRY\USER\S-1-5-21-3975168204-1612096350-4002976354-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vgabfz.exe
Key opened	\REGISTRY\USER\S-1-5-21-3975168204-1612096350-4002976354-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vgabfz.exe
Key opened	\REGISTRY\USER\S-1-5-21-3975168204-1612096350-4002976354-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vgabfz.exe
Key opened	\REGISTRY\USER\S-1-5-21-3975168204-1612096350-4002976354-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vgabfz.exe
Key opened	\REGISTRY\USER\S-1-5-21-3975168204-1612096350-4002976354-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vgabfz.exe
Key opened	\REGISTRY\USER\S-1-5-21-3975168204-1612096350-4002976354-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vgabfz.exe
Key opened	\REGISTRY\USER\S-1-5-21-3975168204-1612096350-4002976354-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vgabfz.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

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
13	ip-api.com

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe

System Network Configuration Discovery: Wi-Fi Discovery 1 TTPs 2 IoCs

Adversaries may search for information about Wi-Fi networks, such as network names and passwords, on compromised systems.

discovery

Wi-Fi Discovery

T1016.002

pid	Process
1052	cmd.exe
5560	netsh.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1796	vgabfz.exe
1796	vgabfz.exe
1796	vgabfz.exe
1796	vgabfz.exe
1796	vgabfz.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1796	vgabfz.exe
Token: SeAssignPrimaryTokenPrivilege	1796	vgabfz.exe
Token: SeTakeOwnershipPrivilege	1796	vgabfz.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1796 wrote to memory of 1052	1796	vgabfz.exe	86
PID 1796 wrote to memory of 1052	1796	vgabfz.exe	86
PID 1052 wrote to memory of 4816	1052	cmd.exe	88
PID 1052 wrote to memory of 4816	1052	cmd.exe	88
PID 1052 wrote to memory of 5560	1052	cmd.exe	89
PID 1052 wrote to memory of 5560	1052	cmd.exe	89
PID 1052 wrote to memory of 2192	1052	cmd.exe	90
PID 1052 wrote to memory of 2192	1052	cmd.exe	90
PID 1796 wrote to memory of 4804	1796	vgabfz.exe	92
PID 1796 wrote to memory of 4804	1796	vgabfz.exe	92
PID 4804 wrote to memory of 5088	4804	cmd.exe	94
PID 4804 wrote to memory of 5088	4804	cmd.exe	94
PID 4804 wrote to memory of 4800	4804	cmd.exe	95
PID 4804 wrote to memory of 4800	4804	cmd.exe	95
PID 4804 wrote to memory of 4536	4804	cmd.exe	96
PID 4804 wrote to memory of 4536	4804	cmd.exe	96

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3975168204-1612096350-4002976354-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vgabfz.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3975168204-1612096350-4002976354-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vgabfz.exe

C:\Users\Admin\AppData\Local\Temp\vgabfz.exe
"C:\Users\Admin\AppData\Local\Temp\vgabfz.exe"
1⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:1796
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c chcp 65001 && netsh wlan show profiles|findstr /R /C:"[ ]:[ ]"
  2⤵
  - System Network Configuration Discovery: Wi-Fi Discovery
  - Suspicious use of WriteProcessMemory
  PID:1052
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:4816
- - C:\Windows\system32\netsh.exe
    netsh wlan show profiles
    3⤵
    - Event Triggered Execution: Netsh Helper DLL
    - System Network Configuration Discovery: Wi-Fi Discovery
    PID:5560
- - C:\Windows\system32\findstr.exe
    findstr /R /C:"[ ]:[ ]"
    3⤵
    PID:2192
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c chcp 65001 && netsh wlan show networks mode=bssid | findstr "SSID BSSID Signal"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4804
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:5088
- - C:\Windows\system32\netsh.exe
    netsh wlan show networks mode=bssid
    3⤵
    - Event Triggered Execution: Netsh Helper DLL
    PID:4800
- - C:\Windows\system32\findstr.exe
    findstr "SSID BSSID Signal"
    3⤵
    PID:4536

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

2

T1552

Credentials In Files

1

T1552.001

Credentials in Registry

1

T1552.002

Discovery

Browser Information Discovery

Query Registry

System Network Configuration Discovery

1

T1016

Wi-Fi Discovery

1

T1016.002

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1796-0-0x00007FF9F7E43000-0x00007FF9F7E45000-memory.dmp

Filesize
8KB

Download
memory/1796-1-0x000001E040650000-0x000001E04067C000-memory.dmp

Filesize
176KB

Download
memory/1796-2-0x00007FF9F7E40000-0x00007FF9F8901000-memory.dmp

Filesize
10.8MB

Download
memory/1796-3-0x00007FF9F7E43000-0x00007FF9F7E45000-memory.dmp

Filesize
8KB

Download
memory/1796-4-0x00007FF9F7E40000-0x00007FF9F8901000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads