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.

Processes:

resource	yara_rule
behavioral2/memory/3468-0-0x000002C3BC6D0000-0x000002C3BC762000-memory.dmp	disable_win_def
C:\ProgramData\Provisioning\settings.exe	disable_win_def

LimeRAT
Simple yet powerful RAT for Windows machines written in .NET.
rat limerat
Drops file in Drivers directory 1 IoCs

Processes:

settings.exe

description ioc process

File opened for modification C:\Windows\System32\drivers\etc\hosts settings.exe

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

Processes:

80aabd5337136686aefe2ff1e6da8d5a.exe

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

Processes:

settings.exe

pid process

2512 settings.exe

pid	process
2512	settings.exe

Drops desktop.ini file(s) 3 IoCs

Processes:

80aabd5337136686aefe2ff1e6da8d5a.exesettings.exe

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

Processes:

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

Processes:

schtasks.exeschtasks.exe

pid process

4328 schtasks.exe
1272 schtasks.exe

flow	ioc
30	pastebin.com
28	pastebin.com

pid	process
4328	schtasks.exe
1272	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

80aabd5337136686aefe2ff1e6da8d5a.exesettings.exe

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

Processes:

80aabd5337136686aefe2ff1e6da8d5a.exesettings.exe

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

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

80aabd5337136686aefe2ff1e6da8d5a.execmd.exesettings.execmd.exe

description	pid	process	target process
PID 3468 wrote to memory of 4328	3468	80aabd5337136686aefe2ff1e6da8d5a.exe	schtasks.exe
PID 3468 wrote to memory of 4328	3468	80aabd5337136686aefe2ff1e6da8d5a.exe	schtasks.exe
PID 3468 wrote to memory of 4816	3468	80aabd5337136686aefe2ff1e6da8d5a.exe	cmd.exe
PID 3468 wrote to memory of 4816	3468	80aabd5337136686aefe2ff1e6da8d5a.exe	cmd.exe
PID 4816 wrote to memory of 2556	4816	cmd.exe	attrib.exe
PID 4816 wrote to memory of 2556	4816	cmd.exe	attrib.exe
PID 4816 wrote to memory of 1108	4816	cmd.exe	attrib.exe
PID 4816 wrote to memory of 1108	4816	cmd.exe	attrib.exe
PID 3468 wrote to memory of 2512	3468	80aabd5337136686aefe2ff1e6da8d5a.exe	settings.exe
PID 3468 wrote to memory of 2512	3468	80aabd5337136686aefe2ff1e6da8d5a.exe	settings.exe
PID 2512 wrote to memory of 1272	2512	settings.exe	schtasks.exe
PID 2512 wrote to memory of 1272	2512	settings.exe	schtasks.exe
PID 2512 wrote to memory of 536	2512	settings.exe	cmd.exe
PID 2512 wrote to memory of 536	2512	settings.exe	cmd.exe
PID 536 wrote to memory of 2080	536	cmd.exe	attrib.exe
PID 536 wrote to memory of 2080	536	cmd.exe	attrib.exe
PID 536 wrote to memory of 640	536	cmd.exe	attrib.exe
PID 536 wrote to memory of 640	536	cmd.exe	attrib.exe

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

Processes:

attrib.exeattrib.exeattrib.exeattrib.exe

pid process

2080 attrib.exe
640 attrib.exe
2556 attrib.exe
1108 attrib.exe

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 Matrix ATT&CK v13

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

Exfiltration

Command and Control

Web Service

1

T1102

Impact

Resource Development

Reconnaissance

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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 Matrix ATT&CK v13

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Downloads