limerat | c1bfda3a4ac6fd27e2947c4ad863ba554cb25dff909fe26ce739a50c2752a0a3

Analysis

max time kernel
143s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
20-12-2023 16:00

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General

Target

e093e99088a1e13e12e64150778ce72c.exe
Size

28KB
MD5

e093e99088a1e13e12e64150778ce72c
SHA1

bd109b4eea2b8804cfc7b1351ad79a6d1f044dd9
SHA256

c1bfda3a4ac6fd27e2947c4ad863ba554cb25dff909fe26ce739a50c2752a0a3
SHA512

16a5f5dfaad54883aad6e128650afbac47e58e55de6a0627c456c00b648db16fc9e2e8bfb525c81e7e5ac0c737e3df2fba5ea174ecb433b3bd2c24cb969fd8bb
SSDEEP

384:jECWna6X7ehaDgcmfKHDMzCJojHYvnjvD6Nr/uJEnjJUDxrlr3ZLPikbMgntPTr3:ueEcWHDmMlDQNdUdB3zbVt8Jijykb

Score

10^/10

limerat rat

Malware Config

Extracted

Family

limerat

Wallets

1KR7iRAoTeUdZ4KiiASRcdcbpMv2yi5wJ7

Attributes

aes_key
janonn
antivm
false
c2_url
https://pastebin.com/raw/2hFCdHWq
delay
3
download_payload
false
install
true
install_name
WindowsUpdate.exe
main_folder
UserProfile
pin_spread
false
sub_folder
\WindowsUpdate\
usb_spread
false

Extracted

Family

limerat

Attributes

antivm
false
c2_url
https://pastebin.com/raw/2hFCdHWq
download_payload
false
install
false
pin_spread
false
usb_spread
false

Signatures

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

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

Processes:

e093e99088a1e13e12e64150778ce72c.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	e093e99088a1e13e12e64150778ce72c.exe

Executes dropped EXE 1 IoCs

Processes:

WindowsUpdate.exe

pid process

1068 WindowsUpdate.exe
Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exe

pid process

2804 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

WindowsUpdate.exe

description pid process

Token: SeDebugPrivilege 1068 WindowsUpdate.exe
Token: SeDebugPrivilege 1068 WindowsUpdate.exe

pid	process
1068	WindowsUpdate.exe

pid	process
2804	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	1068	WindowsUpdate.exe
Token: SeDebugPrivilege	1068	WindowsUpdate.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

e093e99088a1e13e12e64150778ce72c.exe

description	pid	process	target process
PID 2920 wrote to memory of 2804	2920	e093e99088a1e13e12e64150778ce72c.exe	schtasks.exe
PID 2920 wrote to memory of 2804	2920	e093e99088a1e13e12e64150778ce72c.exe	schtasks.exe
PID 2920 wrote to memory of 2804	2920	e093e99088a1e13e12e64150778ce72c.exe	schtasks.exe
PID 2920 wrote to memory of 1068	2920	e093e99088a1e13e12e64150778ce72c.exe	WindowsUpdate.exe
PID 2920 wrote to memory of 1068	2920	e093e99088a1e13e12e64150778ce72c.exe	WindowsUpdate.exe
PID 2920 wrote to memory of 1068	2920	e093e99088a1e13e12e64150778ce72c.exe	WindowsUpdate.exe

C:\Users\Admin\AppData\Local\Temp\e093e99088a1e13e12e64150778ce72c.exe
"C:\Users\Admin\AppData\Local\Temp\e093e99088a1e13e12e64150778ce72c.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2920
- C:\Windows\SysWOW64\schtasks.exe
  schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\WindowsUpdate\WindowsUpdate.exe'"
  2⤵
  - Creates scheduled task(s)
  PID:2804
- C:\Users\Admin\WindowsUpdate\WindowsUpdate.exe
  "C:\Users\Admin\WindowsUpdate\WindowsUpdate.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1068

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\WindowsUpdate\WindowsUpdate.exe

Filesize
28KB

MD5
e093e99088a1e13e12e64150778ce72c

SHA1
bd109b4eea2b8804cfc7b1351ad79a6d1f044dd9

SHA256
c1bfda3a4ac6fd27e2947c4ad863ba554cb25dff909fe26ce739a50c2752a0a3

SHA512
16a5f5dfaad54883aad6e128650afbac47e58e55de6a0627c456c00b648db16fc9e2e8bfb525c81e7e5ac0c737e3df2fba5ea174ecb433b3bd2c24cb969fd8bb

Download Submit
memory/1068-18-0x0000000005640000-0x0000000005650000-memory.dmp

Filesize
64KB

Download
memory/1068-17-0x00000000751B0000-0x0000000075960000-memory.dmp

Filesize
7.7MB

Download
memory/1068-19-0x00000000067D0000-0x0000000006862000-memory.dmp

Filesize
584KB

Download
memory/1068-20-0x00000000751B0000-0x0000000075960000-memory.dmp

Filesize
7.7MB

Download
memory/1068-21-0x0000000005640000-0x0000000005650000-memory.dmp

Filesize
64KB

Download
memory/2920-2-0x00000000057C0000-0x000000000585C000-memory.dmp

Filesize
624KB

Download
memory/2920-4-0x0000000005990000-0x00000000059A0000-memory.dmp

Filesize
64KB

Download
memory/2920-3-0x00000000056F0000-0x0000000005756000-memory.dmp

Filesize
408KB

Download
memory/2920-5-0x0000000006410000-0x00000000069B4000-memory.dmp

Filesize
5.6MB

Download
memory/2920-0-0x0000000000D90000-0x0000000000D9C000-memory.dmp

Filesize
48KB

Download
memory/2920-16-0x00000000751B0000-0x0000000075960000-memory.dmp

Filesize
7.7MB

Download
memory/2920-1-0x00000000751B0000-0x0000000075960000-memory.dmp

Filesize
7.7MB

Download