limerat | afd7b91be42e614fa8f3488f8cf2024b1a5b364c4b66c514fa86940b06c93515

General

Target

80aabd5337136686aefe2ff1e6da8d5a.exe
Size

563KB
MD5

80aabd5337136686aefe2ff1e6da8d5a
SHA1

a749d303f5a928cff0d66ac23a704b90837ea0f9
SHA256

afd7b91be42e614fa8f3488f8cf2024b1a5b364c4b66c514fa86940b06c93515
SHA512

5472e503c6e18297efcac3cb0b78dd1c4798f6d60695bf738aba8cfdf42902a2b9d5fb0bf35503750efd6a31ea1cb0144fa07f3f31aeaaee8bd492c0a501fe5a
SSDEEP

12288:6V6zPygCa+DZjF1/A/ZMvGTsv+wD1IRJ+ZN1JBCGoOdnq1T:c6zPXCa+DZj3/SOvPGkZ13ox

Score

10^/10

limerat rat

Malware Config

Extracted

Family

limerat

Wallets

False

Attributes

aes_key
admin12345$
antivm
false
c2_url
https://pastebin.com/raw/dd1yrjpH
download_payload
false
install
false
install_name
settings.exe
main_folder
False
payload_url
True
pin_spread
false
sub_folder
True
usb_spread
false

Signatures

Contains code to disable Windows Defender 2 IoCs

A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

resource	yara_rule
behavioral2/memory/3468-0-0x000002C3BC6D0000-0x000002C3BC762000-memory.dmp	disable_win_def
behavioral2/files/0x000600000002322e-5.dat	disable_win_def

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

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	settings.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	80aabd5337136686aefe2ff1e6da8d5a.exe

Executes dropped EXE 1 IoCs

pid	Process
2512	settings.exe

Drops desktop.ini file(s) 3 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\LinkM\desktop.ini	80aabd5337136686aefe2ff1e6da8d5a.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\LinkM\desktop.ini	80aabd5337136686aefe2ff1e6da8d5a.exe
File created	C:\Users\Admin\AppData\Roaming\LinkM\desktop.ini	settings.exe

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

Web Service

T1102

flow	ioc
30	pastebin.com
28	pastebin.com

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 2 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
4328	schtasks.exe
1272	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3468	80aabd5337136686aefe2ff1e6da8d5a.exe
3468	80aabd5337136686aefe2ff1e6da8d5a.exe
3468	80aabd5337136686aefe2ff1e6da8d5a.exe
2512	settings.exe
2512	settings.exe
2512	settings.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3468	80aabd5337136686aefe2ff1e6da8d5a.exe
Token: SeDebugPrivilege	2512	settings.exe
Token: SeDebugPrivilege	2512	settings.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 3468 wrote to memory of 4328	3468	80aabd5337136686aefe2ff1e6da8d5a.exe	87
PID 3468 wrote to memory of 4328	3468	80aabd5337136686aefe2ff1e6da8d5a.exe	87
PID 3468 wrote to memory of 4816	3468	80aabd5337136686aefe2ff1e6da8d5a.exe	90
PID 3468 wrote to memory of 4816	3468	80aabd5337136686aefe2ff1e6da8d5a.exe	90
PID 4816 wrote to memory of 2556	4816	cmd.exe	92
PID 4816 wrote to memory of 2556	4816	cmd.exe	92
PID 4816 wrote to memory of 1108	4816	cmd.exe	93
PID 4816 wrote to memory of 1108	4816	cmd.exe	93
PID 3468 wrote to memory of 2512	3468	80aabd5337136686aefe2ff1e6da8d5a.exe	96
PID 3468 wrote to memory of 2512	3468	80aabd5337136686aefe2ff1e6da8d5a.exe	96
PID 2512 wrote to memory of 1272	2512	settings.exe	97
PID 2512 wrote to memory of 1272	2512	settings.exe	97
PID 2512 wrote to memory of 536	2512	settings.exe	99
PID 2512 wrote to memory of 536	2512	settings.exe	99
PID 536 wrote to memory of 2080	536	cmd.exe	101
PID 536 wrote to memory of 2080	536	cmd.exe	101
PID 536 wrote to memory of 640	536	cmd.exe	102
PID 536 wrote to memory of 640	536	cmd.exe	102

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

Views/modifies file attributes 1 TTPs 4 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2080	attrib.exe
640	attrib.exe
2556	attrib.exe
1108	attrib.exe

C:\Users\Admin\AppData\Local\Temp\80aabd5337136686aefe2ff1e6da8d5a.exe
"C:\Users\Admin\AppData\Local\Temp\80aabd5337136686aefe2ff1e6da8d5a.exe"
1⤵
- Checks computer location settings
- Drops desktop.ini file(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3468
- C:\Windows\SYSTEM32\schtasks.exe
  schtasks /create /f /sc MINUTE /mo 5 /RL LIMITED /tn UDMR /tr "'C:\ProgramData\Provisioning\settings.exe'"
  2⤵
  - Creates scheduled task(s)
  PID:4328
- C:\Windows\SYSTEM32\cmd.exe
  cmd /c attrib +H +S "C:\ProgramData\\Provisioning" & attrib +H +S "C:\ProgramData\\Provisioning\*" /S /D
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4816
- - C:\Windows\system32\attrib.exe
    attrib +H +S "C:\ProgramData\\Provisioning"
    3⤵
    - Views/modifies file attributes
    PID:2556
- - C:\Windows\system32\attrib.exe
    attrib +H +S "C:\ProgramData\\Provisioning\*" /S /D
    3⤵
    - Views/modifies file attributes
    PID:1108
- C:\ProgramData\Provisioning\settings.exe
  "C:\ProgramData\Provisioning\settings.exe"
  2⤵
  - Drops file in Drivers directory
  - Executes dropped EXE
  - Drops desktop.ini file(s)
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2512
- - C:\Windows\SYSTEM32\schtasks.exe
    schtasks /create /f /sc MINUTE /mo 5 /RL LIMITED /tn UDMR /tr "'C:\ProgramData\Provisioning\settings.exe'"
    3⤵
    - Creates scheduled task(s)
    PID:1272
- - C:\Windows\SYSTEM32\cmd.exe
    cmd /c attrib +H +S "C:\ProgramData\\Provisioning" & attrib +H +S "C:\ProgramData\\Provisioning\*" /S /D
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:536
  - - C:\Windows\system32\attrib.exe
      attrib +H +S "C:\ProgramData\\Provisioning"
      4⤵
      Views/modifies file attributes
      PID:2080
  - - C:\Windows\system32\attrib.exe
      attrib +H +S "C:\ProgramData\\Provisioning\*" /S /D
      4⤵
      Views/modifies file attributes
      PID:640

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Hide Artifacts

1

T1564

Hidden Files and Directories

1

T1564.001

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\ProgramData\Provisioning\settings.exe

Filesize
563KB

MD5
80aabd5337136686aefe2ff1e6da8d5a

SHA1
a749d303f5a928cff0d66ac23a704b90837ea0f9

SHA256
afd7b91be42e614fa8f3488f8cf2024b1a5b364c4b66c514fa86940b06c93515

SHA512
5472e503c6e18297efcac3cb0b78dd1c4798f6d60695bf738aba8cfdf42902a2b9d5fb0bf35503750efd6a31ea1cb0144fa07f3f31aeaaee8bd492c0a501fe5a

Download Submit
C:\Users\Admin\AppData\Roaming\LinkM\settings.exe.lnk

Filesize
802B

MD5
61faad8199c2e47ad6ba3d7ead81f6d6

SHA1
7e56e8fe3d37301a33d4ded81296d3b76d350612

SHA256
02b094328475ed462d69d66b66801807dc76aecee00f50526d6a27363a658ab3

SHA512
b13aa3ba23b9b6af965b7bf21d3e0579c92b5897f8512ef9de04321d01f9b61e97476eb2e7761aba4d0f3d9d852912c26d7a3699481de2cf0d16a5b26ba56dfe

Download Submit
memory/2512-10-0x00007FFAF99C0000-0x00007FFAFA481000-memory.dmp

Filesize
10.8MB

Download
memory/2512-13-0x000002242A780000-0x000002242A790000-memory.dmp

Filesize
64KB

Download
memory/2512-14-0x00007FFAF99C0000-0x00007FFAFA481000-memory.dmp

Filesize
10.8MB

Download
memory/3468-0-0x000002C3BC6D0000-0x000002C3BC762000-memory.dmp

Filesize
584KB

Download
memory/3468-1-0x00007FFAF99C0000-0x00007FFAFA481000-memory.dmp

Filesize
10.8MB

Download
memory/3468-6-0x000002C3D6CB0000-0x000002C3D6CC0000-memory.dmp

Filesize
64KB

Download
memory/3468-9-0x00007FFAF99C0000-0x00007FFAFA481000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads