limerat | 94ac06213f18172bfc549d04695c55937b8c25c8a578458841bf45fcc0bfed38

General

Target

New-Client.exe
Size

28KB
MD5

c322b88311ba91359d759090203972de
SHA1

090597f413486ac26c76e804d4ad1fd75ab75cfc
SHA256

94ac06213f18172bfc549d04695c55937b8c25c8a578458841bf45fcc0bfed38
SHA512

839b677c15a87237f6eeb6fb9c2c6a400c569761b4d67d5291472b12bb6110c740c139c048f456b96421c6d56cac1f70fb24abecd80b8f3d02b08609fc88504b
SSDEEP

384:7B+Sbj6NKYPpC6BZAH9i05qDOhY1xlvvDKNrCeJE3WNg5ze5V+qgcvuHQro3lcrH:lpYPo6BZw9ThYzlH45NPD06j

Score

10^/10

limerat discovery rat

Malware Config

Extracted

Family

limerat

Attributes

aes_key
1
antivm
false
c2_url
https://pastebin.com/raw/NfVNxzHF
delay
3
download_payload
false
install
true
install_name
WinSession.exe
main_folder
AppData
pin_spread
false
sub_folder
\SystemWinSession\
usb_spread
false

Signatures

LimeRAT
Simple yet powerful RAT for Windows machines written in .NET.
rat limerat

Executes dropped EXE 1 IoCs

pid	Process
4368	WinSession.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
1	pastebin.com
2	pastebin.com

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

System Information Discovery
T1082

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	New-Client.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WinSession.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
5012	schtasks.exe

Suspicious behavior: EnumeratesProcesses 30 IoCs

pid	Process
4368	WinSession.exe
4368	WinSession.exe
4368	WinSession.exe
4368	WinSession.exe
4368	WinSession.exe
4368	WinSession.exe
4368	WinSession.exe
4368	WinSession.exe
4368	WinSession.exe
4368	WinSession.exe
4368	WinSession.exe
4368	WinSession.exe
4368	WinSession.exe
4368	WinSession.exe
4368	WinSession.exe
4368	WinSession.exe
4368	WinSession.exe
4368	WinSession.exe
4368	WinSession.exe
4368	WinSession.exe
4368	WinSession.exe
4368	WinSession.exe
4368	WinSession.exe
4368	WinSession.exe
4368	WinSession.exe
4368	WinSession.exe
4368	WinSession.exe
4368	WinSession.exe
4368	WinSession.exe
4368	WinSession.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4368	WinSession.exe
Token: SeDebugPrivilege	4368	WinSession.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1268 wrote to memory of 5012	1268	New-Client.exe	84
PID 1268 wrote to memory of 5012	1268	New-Client.exe	84
PID 1268 wrote to memory of 5012	1268	New-Client.exe	84
PID 1268 wrote to memory of 4368	1268	New-Client.exe	86
PID 1268 wrote to memory of 4368	1268	New-Client.exe	86
PID 1268 wrote to memory of 4368	1268	New-Client.exe	86

C:\Users\Admin\AppData\Local\Temp\New-Client.exe
"C:\Users\Admin\AppData\Local\Temp\New-Client.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1268
- C:\Windows\SysWOW64\schtasks.exe
  schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\AppData\Roaming\SystemWinSession\WinSession.exe'"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:5012
- C:\Users\Admin\AppData\Roaming\SystemWinSession\WinSession.exe
  "C:\Users\Admin\AppData\Roaming\SystemWinSession\WinSession.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4368

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\SystemWinSession\WinSession.exe

Filesize
28KB

MD5
c322b88311ba91359d759090203972de

SHA1
090597f413486ac26c76e804d4ad1fd75ab75cfc

SHA256
94ac06213f18172bfc549d04695c55937b8c25c8a578458841bf45fcc0bfed38

SHA512
839b677c15a87237f6eeb6fb9c2c6a400c569761b4d67d5291472b12bb6110c740c139c048f456b96421c6d56cac1f70fb24abecd80b8f3d02b08609fc88504b

Download Submit
memory/1268-0-0x0000000074F1E000-0x0000000074F1F000-memory.dmp

Filesize
4KB

Download
memory/1268-1-0x00000000004C0000-0x00000000004CC000-memory.dmp

Filesize
48KB

Download
memory/1268-2-0x0000000004F70000-0x000000000500C000-memory.dmp

Filesize
624KB

Download
memory/1268-3-0x0000000005010000-0x0000000005076000-memory.dmp

Filesize
408KB

Download
memory/1268-4-0x0000000074F10000-0x00000000756C1000-memory.dmp

Filesize
7.7MB

Download
memory/1268-5-0x0000000005BF0000-0x0000000006196000-memory.dmp

Filesize
5.6MB

Download
memory/1268-17-0x0000000074F10000-0x00000000756C1000-memory.dmp

Filesize
7.7MB

Download
memory/4368-15-0x0000000074F10000-0x00000000756C1000-memory.dmp

Filesize
7.7MB

Download
memory/4368-16-0x0000000074F10000-0x00000000756C1000-memory.dmp

Filesize
7.7MB

Download
memory/4368-18-0x0000000074F10000-0x00000000756C1000-memory.dmp

Filesize
7.7MB

Download
memory/4368-19-0x0000000074F10000-0x00000000756C1000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads