limerat | afd7b91be42e614fa8f3488f8cf2024b1a5b364c4b66c514fa86940b06c93515

Analysis

max time kernel
132s
max time network
153s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
29/01/2024, 19:26

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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 3 IoCs

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

resource	yara_rule
behavioral1/memory/2572-0-0x00000000010E0000-0x0000000001172000-memory.dmp	disable_win_def
behavioral1/files/0x00070000000162a6-5.dat	disable_win_def
behavioral1/memory/3028-8-0x0000000000BE0000-0x0000000000C72000-memory.dmp	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

Executes dropped EXE 1 IoCs

pid	Process
3028	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
5	pastebin.com
6	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
2448	schtasks.exe
2688	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2572	80aabd5337136686aefe2ff1e6da8d5a.exe
2572	80aabd5337136686aefe2ff1e6da8d5a.exe
2572	80aabd5337136686aefe2ff1e6da8d5a.exe
3028	settings.exe
3028	settings.exe
3028	settings.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2572	80aabd5337136686aefe2ff1e6da8d5a.exe
Token: SeDebugPrivilege	3028	settings.exe
Token: SeDebugPrivilege	3028	settings.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2572 wrote to memory of 2448	2572	80aabd5337136686aefe2ff1e6da8d5a.exe	28
PID 2572 wrote to memory of 2448	2572	80aabd5337136686aefe2ff1e6da8d5a.exe	28
PID 2572 wrote to memory of 2448	2572	80aabd5337136686aefe2ff1e6da8d5a.exe	28
PID 2572 wrote to memory of 2864	2572	80aabd5337136686aefe2ff1e6da8d5a.exe	31
PID 2572 wrote to memory of 2864	2572	80aabd5337136686aefe2ff1e6da8d5a.exe	31
PID 2572 wrote to memory of 2864	2572	80aabd5337136686aefe2ff1e6da8d5a.exe	31
PID 2864 wrote to memory of 2840	2864	cmd.exe	33
PID 2864 wrote to memory of 2840	2864	cmd.exe	33
PID 2864 wrote to memory of 2840	2864	cmd.exe	33
PID 2864 wrote to memory of 2640	2864	cmd.exe	34
PID 2864 wrote to memory of 2640	2864	cmd.exe	34
PID 2864 wrote to memory of 2640	2864	cmd.exe	34
PID 2572 wrote to memory of 3028	2572	80aabd5337136686aefe2ff1e6da8d5a.exe	35
PID 2572 wrote to memory of 3028	2572	80aabd5337136686aefe2ff1e6da8d5a.exe	35
PID 2572 wrote to memory of 3028	2572	80aabd5337136686aefe2ff1e6da8d5a.exe	35
PID 3028 wrote to memory of 2688	3028	settings.exe	36
PID 3028 wrote to memory of 2688	3028	settings.exe	36
PID 3028 wrote to memory of 2688	3028	settings.exe	36
PID 3028 wrote to memory of 1580	3028	settings.exe	38
PID 3028 wrote to memory of 1580	3028	settings.exe	38
PID 3028 wrote to memory of 1580	3028	settings.exe	38
PID 1580 wrote to memory of 668	1580	cmd.exe	40
PID 1580 wrote to memory of 668	1580	cmd.exe	40
PID 1580 wrote to memory of 668	1580	cmd.exe	40
PID 1580 wrote to memory of 512	1580	cmd.exe	41
PID 1580 wrote to memory of 512	1580	cmd.exe	41
PID 1580 wrote to memory of 512	1580	cmd.exe	41

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
2840	attrib.exe
2640	attrib.exe
668	attrib.exe
512	attrib.exe

C:\Users\Admin\AppData\Local\Temp\80aabd5337136686aefe2ff1e6da8d5a.exe
"C:\Users\Admin\AppData\Local\Temp\80aabd5337136686aefe2ff1e6da8d5a.exe"
1⤵
- Drops desktop.ini file(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2572
- 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:2448
- 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:2864
- - C:\Windows\system32\attrib.exe
    attrib +H +S "C:\ProgramData\\Provisioning"
    3⤵
    - Views/modifies file attributes
    PID:2840
- - C:\Windows\system32\attrib.exe
    attrib +H +S "C:\ProgramData\\Provisioning\*" /S /D
    3⤵
    - Views/modifies file attributes
    PID:2640
- 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:3028
- - 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:2688
- - 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:1580
  - - C:\Windows\system32\attrib.exe
      attrib +H +S "C:\ProgramData\\Provisioning"
      4⤵
      Views/modifies file attributes
      PID:668
  - - C:\Windows\system32\attrib.exe
      attrib +H +S "C:\ProgramData\\Provisioning\*" /S /D
      4⤵
      Views/modifies file attributes
      PID:512

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

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

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\Local\Temp\CabB7AE.tmp

Filesize
65KB

MD5
ac05d27423a85adc1622c714f2cb6184

SHA1
b0fe2b1abddb97837ea0195be70ab2ff14d43198

SHA256
c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

SHA512
6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarB84D.tmp

Filesize
171KB

MD5
9c0c641c06238516f27941aa1166d427

SHA1
64cd549fb8cf014fcd9312aa7a5b023847b6c977

SHA256
4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

SHA512
936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

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

Filesize
818B

MD5
3798d4cc9ccec9f631b976031436b9d7

SHA1
48e749f1fecc9b320349712e69e5d14304f0a820

SHA256
d2739833e78366320c6078534632856e7d9c53367ef2122a691f0edc285d0755

SHA512
f0780bb80f47a759c2fa20a192eef65ee52045689cd1826349556f1491cd85d1b35ab2a712c7c0f2834f87354d7bd9ea12aa0adbe0fb7134c5ce1c05761641d5

Download Submit
memory/2572-0-0x00000000010E0000-0x0000000001172000-memory.dmp

Filesize
584KB

Download
memory/2572-12-0x000007FEF5DB0000-0x000007FEF679C000-memory.dmp

Filesize
9.9MB

Download
memory/2572-6-0x000000001B3A0000-0x000000001B420000-memory.dmp

Filesize
512KB

Download
memory/2572-1-0x000007FEF5DB0000-0x000007FEF679C000-memory.dmp

Filesize
9.9MB

Download
memory/3028-8-0x0000000000BE0000-0x0000000000C72000-memory.dmp

Filesize
584KB

Download
memory/3028-9-0x000007FEF5DB0000-0x000007FEF679C000-memory.dmp

Filesize
9.9MB

Download
memory/3028-13-0x000000001B2B0000-0x000000001B330000-memory.dmp

Filesize
512KB

Download
memory/3028-48-0x000007FEF5DB0000-0x000007FEF679C000-memory.dmp

Filesize
9.9MB

Download
memory/3028-49-0x000000001B2B0000-0x000000001B330000-memory.dmp

Filesize
512KB

Download