legion | f25b0322ec826b79bb2c088a3c017e00f6d5afe724acba9807a5c3bd6bc4f694

Analysis

max time kernel
30s
max time network
144s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
11-10-2024 17:55

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General

Target

plugins/NetworkTools.dll
Size

844KB
MD5

9142efa8e5b6fa9c95229d8c217b9211
SHA1

9ad24a90b73d274731b44724816d461c9f36a202
SHA256

6f0a1df27838aaedfd8ceb6eb670b01a3a8ca398960fad661451bf605a23f5a7
SHA512

6936f09fff7e2c89c46d7561f6acc6de0a3781e18c2b98313b0eb82b777ceeb12123ad2b7e54a9a40ab4149d6f5011b172e8046d61f69a416acd33482710f3b0
SSDEEP

12288:nWGTBYmTAvj6JJ9vuCGgDiBLIG78Kkz82azvCtyAvsEUE5XVNPvOZFn6T8XTWJ/Y:WGTB1TrjD/SeGVqqClScz

Score

10^/10

legion discovery downloader loader stealer

Malware Config

Extracted

Family

legion

dns-beast.com

Attributes

url_paths
hittest.php
user_agent
Mozilla/5.0 (Windows NT 6.3; Trident/7.0; Touch; rv:11.0) like Gecko

Signatures

Legion, RobotDropper, Satacom
Legion aka 'RobotDropper' or 'Satacom' is a malware downloader written in C++ and Legion stealer is written C#.
downloader stealer legion

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1512 set thread context of 4044	1512	rundll32.exe	80

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4852	1512	WerFault.exe	79

System Location Discovery: System Language Discovery 1 TTPs 2 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	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 4856 wrote to memory of 1512	4856	rundll32.exe	79
PID 4856 wrote to memory of 1512	4856	rundll32.exe	79
PID 4856 wrote to memory of 1512	4856	rundll32.exe	79
PID 1512 wrote to memory of 4044	1512	rundll32.exe	80
PID 1512 wrote to memory of 4044	1512	rundll32.exe	80
PID 1512 wrote to memory of 4044	1512	rundll32.exe	80
PID 1512 wrote to memory of 4044	1512	rundll32.exe	80

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\plugins\NetworkTools.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4856
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\plugins\NetworkTools.dll,#1
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1512
- - C:\Windows\SysWOW64\explorer.exe
    explorer.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4044
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1512 -s 476
    3⤵
    - Program crash
    PID:4852

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 1512 -ip 1512
1⤵
PID:2608

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/1512-1-0x0000000001610000-0x0000000001710000-memory.dmp

Filesize
1024KB

Download
memory/4044-2-0x00000000008F0000-0x0000000000917000-memory.dmp

Filesize
156KB

Download
memory/4044-3-0x00000000008F0000-0x0000000000917000-memory.dmp

Filesize
156KB

Download
memory/4044-4-0x00000000008F0000-0x0000000000917000-memory.dmp

Filesize
156KB

Download
memory/4044-5-0x00000000008F0000-0x0000000000917000-memory.dmp

Filesize
156KB

Download
memory/4044-8-0x00000000008F0000-0x0000000000917000-memory.dmp

Filesize
156KB

Download