517422af0bb3ad483144aaf489017311678f4af7cec58f5dafe68a0db9bd5952

General

Target

517422af0bb3ad483144aaf489017311678f4af7cec58f5dafe68a0db9bd5952N.exe
Size

596KB
MD5

74ea3fe876df4812df04805cb921edb0
SHA1

43ba407cf7cb376fbc9932eb6b3142a3d606bdeb
SHA256

517422af0bb3ad483144aaf489017311678f4af7cec58f5dafe68a0db9bd5952
SHA512

f3b26517d67c0843b1ef57a7059d11b51bcbefb07ee092946c36722e29cf7d7131473ed6e9ff3a37a1655258e03199b3ceeec3171e67efc29abf3b23c1408b2a
SSDEEP

6144:Zs9C0eaieHm71o2pL2IMJDoMc2ZNu5GQpsnp/yFPMsXnQODVNIg+cTtgJ7AOyZja:Zs9C0eaieHmO292D3//yFPMsXkJ7MmkE

Score

8^/10

credential_access discovery execution persistence privilege_escalation spyware stealer

Malware Config

Signatures

Blocklisted process makes network request 1 IoCs

flow	pid	Process
7	2864	rundll32.exe

Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
2904	Gxtuum.exe

Loads dropped DLL 9 IoCs

pid	Process
2600	517422af0bb3ad483144aaf489017311678f4af7cec58f5dafe68a0db9bd5952N.exe
2820	rundll32.exe
2820	rundll32.exe
2820	rundll32.exe
2820	rundll32.exe
2864	rundll32.exe
2864	rundll32.exe
2864	rundll32.exe
2864	rundll32.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 local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
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
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

Credentials In Files
T1552.001

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\Gxtuum.job	517422af0bb3ad483144aaf489017311678f4af7cec58f5dafe68a0db9bd5952N.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
1800	powershell.exe

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 3 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

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	517422af0bb3ad483144aaf489017311678f4af7cec58f5dafe68a0db9bd5952N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Gxtuum.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

System Network Configuration Discovery: Wi-Fi Discovery 1 TTPs 1 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
2700	netsh.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2864	rundll32.exe
2864	rundll32.exe
2864	rundll32.exe
2864	rundll32.exe
2864	rundll32.exe
2864	rundll32.exe
1800	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1800	powershell.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2600	517422af0bb3ad483144aaf489017311678f4af7cec58f5dafe68a0db9bd5952N.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2600 wrote to memory of 2904	2600	517422af0bb3ad483144aaf489017311678f4af7cec58f5dafe68a0db9bd5952N.exe	29
PID 2600 wrote to memory of 2904	2600	517422af0bb3ad483144aaf489017311678f4af7cec58f5dafe68a0db9bd5952N.exe	29
PID 2600 wrote to memory of 2904	2600	517422af0bb3ad483144aaf489017311678f4af7cec58f5dafe68a0db9bd5952N.exe	29
PID 2600 wrote to memory of 2904	2600	517422af0bb3ad483144aaf489017311678f4af7cec58f5dafe68a0db9bd5952N.exe	29
PID 2904 wrote to memory of 2820	2904	Gxtuum.exe	31
PID 2904 wrote to memory of 2820	2904	Gxtuum.exe	31
PID 2904 wrote to memory of 2820	2904	Gxtuum.exe	31
PID 2904 wrote to memory of 2820	2904	Gxtuum.exe	31
PID 2904 wrote to memory of 2820	2904	Gxtuum.exe	31
PID 2904 wrote to memory of 2820	2904	Gxtuum.exe	31
PID 2904 wrote to memory of 2820	2904	Gxtuum.exe	31
PID 2820 wrote to memory of 2864	2820	rundll32.exe	32
PID 2820 wrote to memory of 2864	2820	rundll32.exe	32
PID 2820 wrote to memory of 2864	2820	rundll32.exe	32
PID 2820 wrote to memory of 2864	2820	rundll32.exe	32
PID 2864 wrote to memory of 2700	2864	rundll32.exe	33
PID 2864 wrote to memory of 2700	2864	rundll32.exe	33
PID 2864 wrote to memory of 2700	2864	rundll32.exe	33
PID 2864 wrote to memory of 1800	2864	rundll32.exe	35
PID 2864 wrote to memory of 1800	2864	rundll32.exe	35
PID 2864 wrote to memory of 1800	2864	rundll32.exe	35

C:\Users\Admin\AppData\Local\Temp\517422af0bb3ad483144aaf489017311678f4af7cec58f5dafe68a0db9bd5952N.exe
"C:\Users\Admin\AppData\Local\Temp\517422af0bb3ad483144aaf489017311678f4af7cec58f5dafe68a0db9bd5952N.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:2600
- C:\Users\Admin\AppData\Local\Temp\3660607b8b\Gxtuum.exe
  "C:\Users\Admin\AppData\Local\Temp\3660607b8b\Gxtuum.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2904
- - C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\44c9c3d1e2ec03\cred64.dll, Main
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2820
  - - C:\Windows\system32\rundll32.exe
      "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\44c9c3d1e2ec03\cred64.dll, Main
      4⤵
      Blocklisted process makes network request
      Loads dropped DLL
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of WriteProcessMemory
      PID:2864
    - - C:\Windows\system32\netsh.exe
        
        netsh wlan show profiles
        5⤵
        Event Triggered Execution: Netsh Helper DLL
        System Network Configuration Discovery: Wi-Fi Discovery
        
        PID:2700
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        powershell -Command Compress-Archive -Path 'C:\Users\Admin\AppData\Local\Temp\_Files_\' -DestinationPath 'C:\Users\Admin\AppData\Local\Temp\692679935401_Desktop.zip' -CompressionLevel Optimal
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1800

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

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

4

T1552

Credentials In Files

3

T1552.001

Credentials in Registry

1

T1552.002

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Wi-Fi Discovery

1

T1016.002

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\3660607b8b\Gxtuum.exe

Filesize
596KB

MD5
74ea3fe876df4812df04805cb921edb0

SHA1
43ba407cf7cb376fbc9932eb6b3142a3d606bdeb

SHA256
517422af0bb3ad483144aaf489017311678f4af7cec58f5dafe68a0db9bd5952

SHA512
f3b26517d67c0843b1ef57a7059d11b51bcbefb07ee092946c36722e29cf7d7131473ed6e9ff3a37a1655258e03199b3ceeec3171e67efc29abf3b23c1408b2a

Download Submit
C:\Users\Admin\AppData\Roaming\44c9c3d1e2ec03\cred64.dll

Filesize
1.2MB

MD5
478cf1466756aec3b32c8cc61fc5c6c6

SHA1
201c3726ce7759de084693759c405d4ff7bf4cd9

SHA256
92c5b1eae5d9f4eb47debd827d3168fb8ab989753262747c04ffee38c010e192

SHA512
2e1e413f02655fec855d081c96ca950701db546a28e4fb66cf5c7593dd39d8eca70882705e82260570193b5e4ecdaec144b2af514144175f1a35ed22f98a3b75

Download Submit
memory/1800-36-0x0000000002370000-0x0000000002378000-memory.dmp

Filesize
32KB

Download
memory/1800-35-0x000000001B340000-0x000000001B622000-memory.dmp

Filesize
2.9MB

Download
memory/2600-1-0x0000000000590000-0x0000000000591000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads