gurcu | 3398ed7cffcc75371d831fda315805c714268c321c863f60c806ae73cfaae4cd

Analysis

max time kernel
145s
max time network
149s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
08/12/2024, 12:05

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General

Target

C9495B3A992EA3E2EF2788C7BA7ED840.exe
Size

163KB
MD5

c9495b3a992ea3e2ef2788c7ba7ed840
SHA1

3d2e2ff99cd28f81a906d8d928ad7d42ff5226be
SHA256

3398ed7cffcc75371d831fda315805c714268c321c863f60c806ae73cfaae4cd
SHA512

a11e2b0424d7342bbddc9dd0541902128238281dd9aa620b81213d937a997f9da1c1d3954a05bd57383eb27cd3270d2a29b40a16893237c435fcfdb6344a1746
SSDEEP

3072:amqroacBJ41WGh6ta9Y9bvxWlI9fKp7KdD+QOi:amwoaCE9Y9bvCQfKkO

Score

10^/10

gurcu collection discovery persistence phishing privilege_escalation spyware stealer

Malware Config

Extracted

Family

gurcu

https://api.telegram.org/bot7617703274:AAFEXxgPRP1fZGT5UCjcRV4hUZdtNFxyusQ/sendMessage?chat_id=-4568449403

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

http://8.222.143.111:8080

Signatures

Gurcu family
gurcu
Gurcu, WhiteSnake
Gurcu aka WhiteSnake is a malware stealer written in C#.
stealer gurcu
A potential corporate email address has been identified in the URL: ARbpA_Admin@NNYJZAHP_report.wsr
phishing
A potential corporate email address has been identified in the URL: WtnnD_Admin@NNYJZAHP_report.wsr
phishing
A potential corporate email address has been identified in the URL: d699F_Admin@NNYJZAHP_report.wsr
phishing
A potential corporate email address has been identified in the URL: gFhoC_Admin@NNYJZAHP_report.wsr
phishing
A potential corporate email address has been identified in the URL: kuiYk_Admin@NNYJZAHP_report.wsr
phishing
A potential corporate email address has been identified in the URL: yOOpt_Admin@NNYJZAHP_report.wsr
phishing
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-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Office\14.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	C9495B3A992EA3E2EF2788C7BA7ED840.exe
Key opened	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	C9495B3A992EA3E2EF2788C7BA7ED840.exe
Key opened	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	C9495B3A992EA3E2EF2788C7BA7ED840.exe
Key opened	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	C9495B3A992EA3E2EF2788C7BA7ED840.exe
Key opened	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	C9495B3A992EA3E2EF2788C7BA7ED840.exe
Key opened	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	C9495B3A992EA3E2EF2788C7BA7ED840.exe
Key opened	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Office\13.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	C9495B3A992EA3E2EF2788C7BA7ED840.exe
Key opened	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	C9495B3A992EA3E2EF2788C7BA7ED840.exe
Key opened	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	C9495B3A992EA3E2EF2788C7BA7ED840.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
4	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 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
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key opened	\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
2576	cmd.exe
2560	netsh.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2220	C9495B3A992EA3E2EF2788C7BA7ED840.exe
2220	C9495B3A992EA3E2EF2788C7BA7ED840.exe
2220	C9495B3A992EA3E2EF2788C7BA7ED840.exe
2220	C9495B3A992EA3E2EF2788C7BA7ED840.exe
2220	C9495B3A992EA3E2EF2788C7BA7ED840.exe

Suspicious use of AdjustPrivilegeToken 13 IoCs

description	pid	Process
Token: SeDebugPrivilege	2220	C9495B3A992EA3E2EF2788C7BA7ED840.exe
Token: SeAssignPrimaryTokenPrivilege	2220	C9495B3A992EA3E2EF2788C7BA7ED840.exe
Token: SeIncreaseQuotaPrivilege	2220	C9495B3A992EA3E2EF2788C7BA7ED840.exe
Token: SeSecurityPrivilege	2220	C9495B3A992EA3E2EF2788C7BA7ED840.exe
Token: SeTakeOwnershipPrivilege	2220	C9495B3A992EA3E2EF2788C7BA7ED840.exe
Token: SeLoadDriverPrivilege	2220	C9495B3A992EA3E2EF2788C7BA7ED840.exe
Token: SeSystemtimePrivilege	2220	C9495B3A992EA3E2EF2788C7BA7ED840.exe
Token: SeBackupPrivilege	2220	C9495B3A992EA3E2EF2788C7BA7ED840.exe
Token: SeRestorePrivilege	2220	C9495B3A992EA3E2EF2788C7BA7ED840.exe
Token: SeShutdownPrivilege	2220	C9495B3A992EA3E2EF2788C7BA7ED840.exe
Token: SeSystemEnvironmentPrivilege	2220	C9495B3A992EA3E2EF2788C7BA7ED840.exe
Token: SeUndockPrivilege	2220	C9495B3A992EA3E2EF2788C7BA7ED840.exe
Token: SeManageVolumePrivilege	2220	C9495B3A992EA3E2EF2788C7BA7ED840.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2220 wrote to memory of 2576	2220	C9495B3A992EA3E2EF2788C7BA7ED840.exe	30
PID 2220 wrote to memory of 2576	2220	C9495B3A992EA3E2EF2788C7BA7ED840.exe	30
PID 2220 wrote to memory of 2576	2220	C9495B3A992EA3E2EF2788C7BA7ED840.exe	30
PID 2576 wrote to memory of 2548	2576	cmd.exe	32
PID 2576 wrote to memory of 2548	2576	cmd.exe	32
PID 2576 wrote to memory of 2548	2576	cmd.exe	32
PID 2576 wrote to memory of 2560	2576	cmd.exe	33
PID 2576 wrote to memory of 2560	2576	cmd.exe	33
PID 2576 wrote to memory of 2560	2576	cmd.exe	33
PID 2576 wrote to memory of 2616	2576	cmd.exe	34
PID 2576 wrote to memory of 2616	2576	cmd.exe	34
PID 2576 wrote to memory of 2616	2576	cmd.exe	34
PID 2220 wrote to memory of 1788	2220	C9495B3A992EA3E2EF2788C7BA7ED840.exe	35
PID 2220 wrote to memory of 1788	2220	C9495B3A992EA3E2EF2788C7BA7ED840.exe	35
PID 2220 wrote to memory of 1788	2220	C9495B3A992EA3E2EF2788C7BA7ED840.exe	35
PID 1788 wrote to memory of 2872	1788	cmd.exe	37
PID 1788 wrote to memory of 2872	1788	cmd.exe	37
PID 1788 wrote to memory of 2872	1788	cmd.exe	37
PID 1788 wrote to memory of 1688	1788	cmd.exe	38
PID 1788 wrote to memory of 1688	1788	cmd.exe	38
PID 1788 wrote to memory of 1688	1788	cmd.exe	38
PID 1788 wrote to memory of 808	1788	cmd.exe	39
PID 1788 wrote to memory of 808	1788	cmd.exe	39
PID 1788 wrote to memory of 808	1788	cmd.exe	39

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	C9495B3A992EA3E2EF2788C7BA7ED840.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	C9495B3A992EA3E2EF2788C7BA7ED840.exe

C:\Users\Admin\AppData\Local\Temp\C9495B3A992EA3E2EF2788C7BA7ED840.exe
"C:\Users\Admin\AppData\Local\Temp\C9495B3A992EA3E2EF2788C7BA7ED840.exe"
1⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:2220
- 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:2576
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:2548
- - C:\Windows\system32\netsh.exe
    netsh wlan show profiles
    3⤵
    - Event Triggered Execution: Netsh Helper DLL
    - System Network Configuration Discovery: Wi-Fi Discovery
    PID:2560
- - C:\Windows\system32\findstr.exe
    findstr /R /C:"[ ]:[ ]"
    3⤵
    PID:2616
- 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:1788
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:2872
- - C:\Windows\system32\netsh.exe
    netsh wlan show networks mode=bssid
    3⤵
    - Event Triggered Execution: Netsh Helper DLL
    PID:1688
- - C:\Windows\system32\findstr.exe
    findstr "SSID BSSID Signal"
    3⤵
    PID:808

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Credentials in Registry

T1552.002

Discovery

Browser Information Discovery

T1217

Query Registry

T1012

System Network Configuration Discovery

T1016

Wi-Fi Discovery

T1016.002

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

memory/2220-0-0x000007FEF5353000-0x000007FEF5354000-memory.dmp

Filesize
4KB

Download
memory/2220-1-0x0000000000C30000-0x0000000000C60000-memory.dmp

Filesize
192KB

Download
memory/2220-2-0x000007FEF5350000-0x000007FEF5D3C000-memory.dmp

Filesize
9.9MB

Download
memory/2220-3-0x000007FEF5353000-0x000007FEF5354000-memory.dmp

Filesize
4KB

Download
memory/2220-4-0x000007FEF5350000-0x000007FEF5D3C000-memory.dmp

Filesize
9.9MB

Download