gurcu | 03423b8784cac66602f6dc04f6303668951e9c7280a80535a708d59e6cf82312

General

Target

03423b8784cac66602f6dc04f6303668951e9c7280a80535a708d59e6cf82312.exe
Size

135KB
MD5

ea08b197bbe8bc874a5c65500db03bf2
SHA1

3cbe0f9a6bb6c1600e196d3c2b54132c72ccce0d
SHA256

03423b8784cac66602f6dc04f6303668951e9c7280a80535a708d59e6cf82312
SHA512

1baa6ee1970ae01c916d00a2727016a458d3bc6a43c9cfe707ccf73d687c190e88781a596661ee302feae53c5671f478a552177d74ce2a4334ad4daa5674bf10
SSDEEP

1536:k3WaMTxYajhMDWWWxD4krrQz46vdszbLpQqVD9bMEqb01XTmUOr87dOPAUVHWHth:6ajYWCkrr3wdAbbD9bMEqo1AWz7bPCe

Score

10^/10

gurcu collection discovery persistence privilege_escalation spyware stealer

Malware Config

Extracted

Family

gurcu

C2

https://api.telegram.org/bot7972507107:AAE0InlBzYqTeRUoXqUM9ewqhQJZRxDPcsE/sendMessage?chat_id=7259165684

http://206.166.251.4:8080

http://167.99.138.249:8080

http://46.4.73.118:9000

http://206.189.109.146:80

http://194.164.198.113:8080

http://45.82.65.63:80

https://5.196.181.135:443

http://95.216.147.179:80

http://185.217.98.121:8080

http://116.202.101.219:8080

http://185.217.98.121:80

http://159.203.174.113:8090

http://107.161.20.142:8080

https://192.99.196.191:443

https://44.228.161.50:443

https://154.9.207.142:443

http://66.42.56.128:80

http://8.219.110.16:9999

https://138.2.92.67:443

Extracted

Family

gurcu

C2

https://api.telegram.org/bot7972507107:AAE0InlBzYqTeRUoXqUM9ewqhQJZRxDPcsE/sendMessage?chat_id=7259165684

Signatures

Gurcu family
gurcu
Gurcu, WhiteSnake
Gurcu aka WhiteSnake 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-1-5-21-3446877943-4095308722-756223633-1000\Control Panel\International\Geo\Nation	03423b8784cac66602f6dc04f6303668951e9c7280a80535a708d59e6cf82312.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-1-5-21-3446877943-4095308722-756223633-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	03423b8784cac66602f6dc04f6303668951e9c7280a80535a708d59e6cf82312.exe
Key opened	\REGISTRY\USER\S-1-5-21-3446877943-4095308722-756223633-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	03423b8784cac66602f6dc04f6303668951e9c7280a80535a708d59e6cf82312.exe
Key opened	\REGISTRY\USER\S-1-5-21-3446877943-4095308722-756223633-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	03423b8784cac66602f6dc04f6303668951e9c7280a80535a708d59e6cf82312.exe
Key opened	\REGISTRY\USER\S-1-5-21-3446877943-4095308722-756223633-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	03423b8784cac66602f6dc04f6303668951e9c7280a80535a708d59e6cf82312.exe
Key opened	\REGISTRY\USER\S-1-5-21-3446877943-4095308722-756223633-1000\Software\Microsoft\Office\14.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	03423b8784cac66602f6dc04f6303668951e9c7280a80535a708d59e6cf82312.exe
Key opened	\REGISTRY\USER\S-1-5-21-3446877943-4095308722-756223633-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	03423b8784cac66602f6dc04f6303668951e9c7280a80535a708d59e6cf82312.exe
Key opened	\REGISTRY\USER\S-1-5-21-3446877943-4095308722-756223633-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	03423b8784cac66602f6dc04f6303668951e9c7280a80535a708d59e6cf82312.exe
Key opened	\REGISTRY\USER\S-1-5-21-3446877943-4095308722-756223633-1000\Software\Microsoft\Office\13.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	03423b8784cac66602f6dc04f6303668951e9c7280a80535a708d59e6cf82312.exe
Key opened	\REGISTRY\USER\S-1-5-21-3446877943-4095308722-756223633-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	03423b8784cac66602f6dc04f6303668951e9c7280a80535a708d59e6cf82312.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
7	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
4604	cmd.exe
216	netsh.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4704	timeout.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3128	03423b8784cac66602f6dc04f6303668951e9c7280a80535a708d59e6cf82312.exe
3128	03423b8784cac66602f6dc04f6303668951e9c7280a80535a708d59e6cf82312.exe
3128	03423b8784cac66602f6dc04f6303668951e9c7280a80535a708d59e6cf82312.exe
3128	03423b8784cac66602f6dc04f6303668951e9c7280a80535a708d59e6cf82312.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3128	03423b8784cac66602f6dc04f6303668951e9c7280a80535a708d59e6cf82312.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 3128 wrote to memory of 4604	3128	03423b8784cac66602f6dc04f6303668951e9c7280a80535a708d59e6cf82312.exe	85
PID 3128 wrote to memory of 4604	3128	03423b8784cac66602f6dc04f6303668951e9c7280a80535a708d59e6cf82312.exe	85
PID 4604 wrote to memory of 5980	4604	cmd.exe	87
PID 4604 wrote to memory of 5980	4604	cmd.exe	87
PID 4604 wrote to memory of 216	4604	cmd.exe	88
PID 4604 wrote to memory of 216	4604	cmd.exe	88
PID 4604 wrote to memory of 228	4604	cmd.exe	89
PID 4604 wrote to memory of 228	4604	cmd.exe	89
PID 3128 wrote to memory of 4064	3128	03423b8784cac66602f6dc04f6303668951e9c7280a80535a708d59e6cf82312.exe	93
PID 3128 wrote to memory of 4064	3128	03423b8784cac66602f6dc04f6303668951e9c7280a80535a708d59e6cf82312.exe	93
PID 4064 wrote to memory of 4740	4064	cmd.exe	95
PID 4064 wrote to memory of 4740	4064	cmd.exe	95
PID 4064 wrote to memory of 4756	4064	cmd.exe	96
PID 4064 wrote to memory of 4756	4064	cmd.exe	96
PID 4064 wrote to memory of 4768	4064	cmd.exe	97
PID 4064 wrote to memory of 4768	4064	cmd.exe	97
PID 3128 wrote to memory of 3260	3128	03423b8784cac66602f6dc04f6303668951e9c7280a80535a708d59e6cf82312.exe	101
PID 3128 wrote to memory of 3260	3128	03423b8784cac66602f6dc04f6303668951e9c7280a80535a708d59e6cf82312.exe	101
PID 3260 wrote to memory of 3548	3260	cmd.exe	103
PID 3260 wrote to memory of 3548	3260	cmd.exe	103
PID 3260 wrote to memory of 4704	3260	cmd.exe	104
PID 3260 wrote to memory of 4704	3260	cmd.exe	104

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3446877943-4095308722-756223633-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	03423b8784cac66602f6dc04f6303668951e9c7280a80535a708d59e6cf82312.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3446877943-4095308722-756223633-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	03423b8784cac66602f6dc04f6303668951e9c7280a80535a708d59e6cf82312.exe

C:\Users\Admin\AppData\Local\Temp\03423b8784cac66602f6dc04f6303668951e9c7280a80535a708d59e6cf82312.exe
"C:\Users\Admin\AppData\Local\Temp\03423b8784cac66602f6dc04f6303668951e9c7280a80535a708d59e6cf82312.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:3128
- 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:4604
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:5980
- - C:\Windows\system32\netsh.exe
    netsh wlan show profiles
    3⤵
    - Event Triggered Execution: Netsh Helper DLL
    - System Network Configuration Discovery: Wi-Fi Discovery
    PID:216
- - C:\Windows\system32\findstr.exe
    findstr /R /C:"[ ]:[ ]"
    3⤵
    PID:228
- 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:4064
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:4740
- - C:\Windows\system32\netsh.exe
    netsh wlan show networks mode=bssid
    3⤵
    - Event Triggered Execution: Netsh Helper DLL
    PID:4756
- - C:\Windows\system32\findstr.exe
    findstr "SSID BSSID Signal"
    3⤵
    PID:4768
- 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\03423b8784cac66602f6dc04f6303668951e9c7280a80535a708d59e6cf82312.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3260
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:3548
- - C:\Windows\system32\timeout.exe
    timeout /t 3
    3⤵
    - Delays execution with timeout.exe
    PID:4704

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/3128-0-0x00007FFEBD493000-0x00007FFEBD495000-memory.dmp

Filesize
8KB

Download
memory/3128-1-0x000001DBD7190000-0x000001DBD71B8000-memory.dmp

Filesize
160KB

Download
memory/3128-2-0x00007FFEBD490000-0x00007FFEBDF51000-memory.dmp

Filesize
10.8MB

Download
memory/3128-3-0x00007FFEBD493000-0x00007FFEBD495000-memory.dmp

Filesize
8KB

Download
memory/3128-4-0x00007FFEBD490000-0x00007FFEBDF51000-memory.dmp

Filesize
10.8MB

Download
memory/3128-7-0x00007FFEBD490000-0x00007FFEBDF51000-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