limerat | 7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16

General

Target

7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exe
Size

79KB
MD5

771a90e168eb38cf7b43ae841759a68f
SHA1

67ea99261e3fad89dce8771c8f9ed4e3c6f9d35a
SHA256

7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16
SHA512

98a4663f05be6f56ece305da44d2a8df3d5d17b72d1b85489b13c81745c5c16c711d3e3a68d5c76b5b7a32f9ada3df85ac43bd2df87ea801c395d0dc7a041100
SSDEEP

1536:S5CmrfW0509dVoxdVps8KQ+lu9TbdbfRA:DD3uxMl4TbdbfRA

Score

10^/10

limerat evasion persistence rat trojan

Malware Config

Extracted

Family

limerat

Wallets

1PwPgp5XGS4VapRjQM1XijgAs2psFeZVGM

Attributes

aes_key
#C^7M3ha6&%678n3VRZet)-D*;zH8Hxa
antivm
true
c2_url
https://pastebin.com/raw/6mZktVr5
delay
51
download_payload
false
install
true
install_name
Windows Update Assistant.exe
main_folder
UserProfile
pin_spread
false
sub_folder
\Microsoft\
usb_spread
true

Signatures

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

Executes dropped EXE 2 IoCs

Processes:

Windows Update Assistant.exeWindows Update Assistant.exe

pid	Process
2032	Windows Update Assistant.exe
5016	Windows Update Assistant.exe

Looks for VMWare Tools registry key 2 TTPs 2 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

Processes:

7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exeWindows Update Assistant.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\Vmware Tools	7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\Vmware Tools	Windows Update Assistant.exe

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:

7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exe

Windows security modification 2 TTPs 3 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exeWindows Update Assistant.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Real-Time Protection	7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1"	7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1"	Windows Update Assistant.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Windows Services = "C:\\Users\\Admin\\AppData\\Roaming\\Windows Update Folder\\Windows Update.exe"	7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Maps connected drives based on registry 3 TTPs 4 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exeWindows Update Assistant.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	Windows Update Assistant.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	Windows Update Assistant.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exeWindows Update Assistant.exe

description	pid	Process	procid_target
PID 4444 set thread context of 1484	4444	7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exe	80
PID 2032 set thread context of 5016	2032	Windows Update Assistant.exe	86

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

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

T1053

Processes:

schtasks.exe

pid	Process
3020	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Windows Update Assistant.exe

description	pid	Process
Token: SeDebugPrivilege	5016	Windows Update Assistant.exe
Token: SeDebugPrivilege	5016	Windows Update Assistant.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exe7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exeWindows Update Assistant.exe

description	pid	Process	procid_target
PID 4444 wrote to memory of 1484	4444	7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exe	80
PID 4444 wrote to memory of 1484	4444	7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exe	80
PID 4444 wrote to memory of 1484	4444	7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exe	80
PID 4444 wrote to memory of 1484	4444	7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exe	80
PID 4444 wrote to memory of 1484	4444	7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exe	80
PID 4444 wrote to memory of 1484	4444	7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exe	80
PID 4444 wrote to memory of 1484	4444	7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exe	80
PID 1484 wrote to memory of 3020	1484	7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exe	83
PID 1484 wrote to memory of 3020	1484	7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exe	83
PID 1484 wrote to memory of 3020	1484	7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exe	83
PID 1484 wrote to memory of 2032	1484	7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exe	85
PID 1484 wrote to memory of 2032	1484	7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exe	85
PID 1484 wrote to memory of 2032	1484	7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exe	85
PID 2032 wrote to memory of 5016	2032	Windows Update Assistant.exe	86
PID 2032 wrote to memory of 5016	2032	Windows Update Assistant.exe	86
PID 2032 wrote to memory of 5016	2032	Windows Update Assistant.exe	86
PID 2032 wrote to memory of 5016	2032	Windows Update Assistant.exe	86
PID 2032 wrote to memory of 5016	2032	Windows Update Assistant.exe	86
PID 2032 wrote to memory of 5016	2032	Windows Update Assistant.exe	86
PID 2032 wrote to memory of 5016	2032	Windows Update Assistant.exe	86

C:\Users\Admin\AppData\Local\Temp\7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exe
"C:\Users\Admin\AppData\Local\Temp\7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exe"
1⤵
- Looks for VMWare Tools registry key
- Windows security modification
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4444
- C:\Users\Admin\AppData\Local\Temp\7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exe
  "{path}"
  2⤵
  - Checks computer location settings
  - Maps connected drives based on registry
  - Suspicious use of WriteProcessMemory
  PID:1484
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\Microsoft\Windows Update Assistant.exe'"
    3⤵
    - Creates scheduled task(s)
    PID:3020
- - C:\Users\Admin\Microsoft\Windows Update Assistant.exe
    "C:\Users\Admin\Microsoft\Windows Update Assistant.exe"
    3⤵
    - Executes dropped EXE
    - Looks for VMWare Tools registry key
    - Windows security modification
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2032
  - - C:\Users\Admin\Microsoft\Windows Update Assistant.exe
      "{path}"
      4⤵
      Executes dropped EXE
      Maps connected drives based on registry
      Suspicious use of AdjustPrivilegeToken
      PID:5016

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

Scheduled Task

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Disabling Security Tools

Modify Registry

Virtualization/Sandbox Evasion

Web Service

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16.exe.log

Filesize
418B

MD5
2f51ee33b74ab710e289b65a7b580c9b

SHA1
031f919473e89c4a463360c7a898fda986836470

SHA256
bdb480893a7d1acc95b67f49dd12a0c1f69b75d1908536d0cc1350ebfbb5cc58

SHA512
927bd82da2cc751b6b2c97efc33019b8977f2d78d467b363cf609e27a3ac8986e0b4c3b4d025be9fe87f50db51285b115b97ae7d0ae642daae2910d44ad9ec5a

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Windows Update Assistant.exe.log

Filesize
418B

MD5
2f51ee33b74ab710e289b65a7b580c9b

SHA1
031f919473e89c4a463360c7a898fda986836470

SHA256
bdb480893a7d1acc95b67f49dd12a0c1f69b75d1908536d0cc1350ebfbb5cc58

SHA512
927bd82da2cc751b6b2c97efc33019b8977f2d78d467b363cf609e27a3ac8986e0b4c3b4d025be9fe87f50db51285b115b97ae7d0ae642daae2910d44ad9ec5a

Download Submit
C:\Users\Admin\Microsoft\Windows Update Assistant.exe

Filesize
79KB

MD5
771a90e168eb38cf7b43ae841759a68f

SHA1
67ea99261e3fad89dce8771c8f9ed4e3c6f9d35a

SHA256
7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16

SHA512
98a4663f05be6f56ece305da44d2a8df3d5d17b72d1b85489b13c81745c5c16c711d3e3a68d5c76b5b7a32f9ada3df85ac43bd2df87ea801c395d0dc7a041100

Download Submit
C:\Users\Admin\Microsoft\Windows Update Assistant.exe

Filesize
79KB

MD5
771a90e168eb38cf7b43ae841759a68f

SHA1
67ea99261e3fad89dce8771c8f9ed4e3c6f9d35a

SHA256
7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16

SHA512
98a4663f05be6f56ece305da44d2a8df3d5d17b72d1b85489b13c81745c5c16c711d3e3a68d5c76b5b7a32f9ada3df85ac43bd2df87ea801c395d0dc7a041100

Download Submit
C:\Users\Admin\Microsoft\Windows Update Assistant.exe

Filesize
79KB

MD5
771a90e168eb38cf7b43ae841759a68f

SHA1
67ea99261e3fad89dce8771c8f9ed4e3c6f9d35a

SHA256
7eabfd11071c795239758dbe44aa1311e89db5f1bd488fb3133757eba8842e16

SHA512
98a4663f05be6f56ece305da44d2a8df3d5d17b72d1b85489b13c81745c5c16c711d3e3a68d5c76b5b7a32f9ada3df85ac43bd2df87ea801c395d0dc7a041100

Download Submit
memory/1484-135-0x0000000000000000-mapping.dmp

Download
memory/1484-138-0x0000000005430000-0x0000000005496000-memory.dmp

Filesize
408KB

Download
memory/1484-136-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2032-140-0x0000000000000000-mapping.dmp

Download
memory/3020-139-0x0000000000000000-mapping.dmp

Download
memory/4444-132-0x0000000000F60000-0x0000000000F7C000-memory.dmp

Filesize
112KB

Download
memory/4444-134-0x000000000A060000-0x000000000A0FC000-memory.dmp

Filesize
624KB

Download
memory/4444-133-0x000000000A570000-0x000000000AB14000-memory.dmp

Filesize
5.6MB

Download
memory/5016-143-0x0000000000000000-mapping.dmp

Download
memory/5016-147-0x00000000064E0000-0x0000000006572000-memory.dmp

Filesize
584KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads