growtopia | af01b25f7db087fe50e3deebf5e55f8cdf9c3588d223471b4f71d9aa82fc92fd

Resubmissions

11/02/2025, 14:17

250211-rl745awmbw 10

Analysis

max time kernel
94s
max time network
132s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
23/02/2025, 22:47

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General

Target

AJProxy.exe
Size

638KB
MD5

6dbf1564024546cf0da4bf8f35936265
SHA1

ec7b401b5222590e9116d36fb454108a09c7d6a7
SHA256

af01b25f7db087fe50e3deebf5e55f8cdf9c3588d223471b4f71d9aa82fc92fd
SHA512

0a4194bbea2b895306a505ca7e27a22fd79589b3c8e6eeae3f747a184f720e87f586d77b5fb88ed24d1447b467f972873150db92f18139d0c5f3d278b304b72d
SSDEEP

12288:h32/lChV9mf/2QRXDD1yed0fsU4GSWaOvPESGj4s32xEdRCS:h3yChVA2Q9NXw2/wPOjdGxY

Score

10^/10

growtopia discovery stealer

Malware Config

Signatures

Growtopia
Growtopa is an opensource modular stealer written in C#.
stealer growtopia
Growtopia family
growtopia

.NET Reactor proctector 1 IoCs

Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

resource	yara_rule
behavioral2/memory/2604-1-0x0000000000BE0000-0x0000000000C86000-memory.dmp	net_reactor

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
1	icanhazip.com

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	AJProxy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
3080	timeout.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2604	AJProxy.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2604 wrote to memory of 3960	2604	AJProxy.exe	90
PID 2604 wrote to memory of 3960	2604	AJProxy.exe	90
PID 2604 wrote to memory of 3960	2604	AJProxy.exe	90
PID 3960 wrote to memory of 3080	3960	cmd.exe	92
PID 3960 wrote to memory of 3080	3960	cmd.exe	92
PID 3960 wrote to memory of 3080	3960	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\AJProxy.exe
"C:\Users\Admin\AppData\Local\Temp\AJProxy.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2604
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /c timeout /T 3 & Del "C:\Users\Admin\AppData\Local\Temp\AJProxy.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3960
- - C:\Windows\SysWOW64\timeout.exe
    timeout /T 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:3080

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2604-0-0x000000007471E000-0x000000007471F000-memory.dmp

Filesize
4KB

Download
memory/2604-1-0x0000000000BE0000-0x0000000000C86000-memory.dmp

Filesize
664KB

Download
memory/2604-2-0x0000000074710000-0x0000000074EC0000-memory.dmp

Filesize
7.7MB

Download
memory/2604-3-0x0000000005F10000-0x0000000005F76000-memory.dmp

Filesize
408KB

Download
memory/2604-5-0x0000000074710000-0x0000000074EC0000-memory.dmp

Filesize
7.7MB

Download