gurcu | 3398ed7cffcc75371d831fda315805c714268c321c863f60c806ae73cfaae4cd

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

C2

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

Extracted

Family

gurcu

C2

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

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: jyibq_Admin@GYHASOLS_report.wsr
phishing

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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	C9495B3A992EA3E2EF2788C7BA7ED840.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 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-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	C9495B3A992EA3E2EF2788C7BA7ED840.exe
Key opened	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	C9495B3A992EA3E2EF2788C7BA7ED840.exe
Key opened	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	C9495B3A992EA3E2EF2788C7BA7ED840.exe
Key opened	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	C9495B3A992EA3E2EF2788C7BA7ED840.exe
Key opened	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	C9495B3A992EA3E2EF2788C7BA7ED840.exe
Key opened	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	C9495B3A992EA3E2EF2788C7BA7ED840.exe
Key opened	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	C9495B3A992EA3E2EF2788C7BA7ED840.exe
Key opened	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Office\13.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	C9495B3A992EA3E2EF2788C7BA7ED840.exe
Key opened	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Office\14.0\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
9	ip-api.com

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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 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
Key value enumerated	\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
2520	cmd.exe
4956	netsh.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2188	timeout.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1960	C9495B3A992EA3E2EF2788C7BA7ED840.exe
1960	C9495B3A992EA3E2EF2788C7BA7ED840.exe
1960	C9495B3A992EA3E2EF2788C7BA7ED840.exe
1960	C9495B3A992EA3E2EF2788C7BA7ED840.exe
1960	C9495B3A992EA3E2EF2788C7BA7ED840.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1960	C9495B3A992EA3E2EF2788C7BA7ED840.exe
Token: SeAssignPrimaryTokenPrivilege	1960	C9495B3A992EA3E2EF2788C7BA7ED840.exe
Token: SeTakeOwnershipPrivilege	1960	C9495B3A992EA3E2EF2788C7BA7ED840.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 1960 wrote to memory of 2520	1960	C9495B3A992EA3E2EF2788C7BA7ED840.exe	82
PID 1960 wrote to memory of 2520	1960	C9495B3A992EA3E2EF2788C7BA7ED840.exe	82
PID 2520 wrote to memory of 1744	2520	cmd.exe	84
PID 2520 wrote to memory of 1744	2520	cmd.exe	84
PID 2520 wrote to memory of 4956	2520	cmd.exe	85
PID 2520 wrote to memory of 4956	2520	cmd.exe	85
PID 2520 wrote to memory of 2384	2520	cmd.exe	86
PID 2520 wrote to memory of 2384	2520	cmd.exe	86
PID 1960 wrote to memory of 4672	1960	C9495B3A992EA3E2EF2788C7BA7ED840.exe	87
PID 1960 wrote to memory of 4672	1960	C9495B3A992EA3E2EF2788C7BA7ED840.exe	87
PID 4672 wrote to memory of 1100	4672	cmd.exe	89
PID 4672 wrote to memory of 1100	4672	cmd.exe	89
PID 4672 wrote to memory of 4912	4672	cmd.exe	90
PID 4672 wrote to memory of 4912	4672	cmd.exe	90
PID 4672 wrote to memory of 1108	4672	cmd.exe	91
PID 4672 wrote to memory of 1108	4672	cmd.exe	91
PID 1960 wrote to memory of 2464	1960	C9495B3A992EA3E2EF2788C7BA7ED840.exe	101
PID 1960 wrote to memory of 2464	1960	C9495B3A992EA3E2EF2788C7BA7ED840.exe	101
PID 2464 wrote to memory of 3144	2464	cmd.exe	103
PID 2464 wrote to memory of 3144	2464	cmd.exe	103
PID 2464 wrote to memory of 2188	2464	cmd.exe	104
PID 2464 wrote to memory of 2188	2464	cmd.exe	104

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	C9495B3A992EA3E2EF2788C7BA7ED840.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\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⤵
- Checks computer location settings
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:1960
- 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:2520
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:1744
- - C:\Windows\system32\netsh.exe
    netsh wlan show profiles
    3⤵
    - Event Triggered Execution: Netsh Helper DLL
    - System Network Configuration Discovery: Wi-Fi Discovery
    PID:4956
- - C:\Windows\system32\findstr.exe
    findstr /R /C:"[ ]:[ ]"
    3⤵
    PID:2384
- 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:4672
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:1100
- - C:\Windows\system32\netsh.exe
    netsh wlan show networks mode=bssid
    3⤵
    - Event Triggered Execution: Netsh Helper DLL
    PID:4912
- - C:\Windows\system32\findstr.exe
    findstr "SSID BSSID Signal"
    3⤵
    PID:1108
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C chcp 65001 && timeout /t 3 > NUL && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\C9495B3A992EA3E2EF2788C7BA7ED840.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2464
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:3144
- - C:\Windows\system32\timeout.exe
    timeout /t 3
    3⤵
    - Delays execution with timeout.exe
    PID:2188

Network

MITRE ATT&CK Enterprise v15

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 Information Discovery

2

T1082

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/1960-0-0x00007FFFAC463000-0x00007FFFAC465000-memory.dmp

Filesize
8KB

Download
memory/1960-1-0x000001FA53560000-0x000001FA53590000-memory.dmp

Filesize
192KB

Download
memory/1960-2-0x00007FFFAC460000-0x00007FFFACF21000-memory.dmp

Filesize
10.8MB

Download
memory/1960-3-0x00007FFFAC463000-0x00007FFFAC465000-memory.dmp

Filesize
8KB

Download
memory/1960-4-0x00007FFFAC460000-0x00007FFFACF21000-memory.dmp

Filesize
10.8MB

Download
memory/1960-7-0x00007FFFAC460000-0x00007FFFACF21000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads