limerat | b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f

Analysis

max time kernel
232s
max time network
319s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
30-11-2022 18:34

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General

Target

b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe
Size

66KB
MD5

8b3c21db4e4189d00b8da6db22ae7387
SHA1

6bd9edd982bb103c21b2a3072c16d0274d692f8e
SHA256

b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f
SHA512

1e551f14c66cdfd790c7cf8700e166dbfda95283b2247d200c02516ab676cebc0b6263250554436195efe2e8956be2d8406ebe82b7bee611fc238a9ff0fc86d2
SSDEEP

1536:J13Mt0qGK+wM0+nXdNPdwjgu3n3ipmC/k/qSAa0iUHXSjUXCOyZGqL:J13Mt7P+wM0+nXdtejgu3nypr/7RLXSZ

Score

10^/10

limerat rat

Malware Config

Extracted

Family

limerat

Attributes

aes_key
IRj3SceatjDfweW/qMMw7g==
antivm
true
c2_url
https://pastebin.com/raw/p8Be8nNX
delay
3
download_payload
false
install
true
install_name
Windows Update.exe
main_folder
UserProfile
pin_spread
false
sub_folder
\Windows\
usb_spread
false

Signatures

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

Executes dropped EXE 2 IoCs

pid	Process
2036	Windows Update.exe
1952	Windows Update.exe

Loads dropped DLL 2 IoCs

pid	Process
520	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe
2036	Windows Update.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 748 set thread context of 520	748	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	28
PID 2036 set thread context of 1952	2036	Windows Update.exe	33

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

pid	Process
1772	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1952	Windows Update.exe
Token: SeDebugPrivilege	1952	Windows Update.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 748 wrote to memory of 520	748	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	28
PID 748 wrote to memory of 520	748	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	28
PID 748 wrote to memory of 520	748	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	28
PID 748 wrote to memory of 520	748	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	28
PID 748 wrote to memory of 520	748	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	28
PID 748 wrote to memory of 520	748	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	28
PID 748 wrote to memory of 520	748	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	28
PID 748 wrote to memory of 520	748	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	28
PID 748 wrote to memory of 520	748	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	28
PID 748 wrote to memory of 520	748	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	28
PID 748 wrote to memory of 520	748	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	28
PID 520 wrote to memory of 1772	520	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	30
PID 520 wrote to memory of 1772	520	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	30
PID 520 wrote to memory of 1772	520	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	30
PID 520 wrote to memory of 1772	520	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	30
PID 520 wrote to memory of 2036	520	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	32
PID 520 wrote to memory of 2036	520	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	32
PID 520 wrote to memory of 2036	520	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	32
PID 520 wrote to memory of 2036	520	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	32
PID 520 wrote to memory of 2036	520	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	32
PID 520 wrote to memory of 2036	520	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	32
PID 520 wrote to memory of 2036	520	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	32
PID 2036 wrote to memory of 1952	2036	Windows Update.exe	33
PID 2036 wrote to memory of 1952	2036	Windows Update.exe	33
PID 2036 wrote to memory of 1952	2036	Windows Update.exe	33
PID 2036 wrote to memory of 1952	2036	Windows Update.exe	33
PID 2036 wrote to memory of 1952	2036	Windows Update.exe	33
PID 2036 wrote to memory of 1952	2036	Windows Update.exe	33
PID 2036 wrote to memory of 1952	2036	Windows Update.exe	33
PID 2036 wrote to memory of 1952	2036	Windows Update.exe	33
PID 2036 wrote to memory of 1952	2036	Windows Update.exe	33
PID 2036 wrote to memory of 1952	2036	Windows Update.exe	33
PID 2036 wrote to memory of 1952	2036	Windows Update.exe	33

C:\Users\Admin\AppData\Local\Temp\b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe
"C:\Users\Admin\AppData\Local\Temp\b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:748
- C:\Users\Admin\AppData\Local\Temp\b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe
  "C:\Users\Admin\AppData\Local\Temp\b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:520
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\Windows\Windows Update.exe'"
    3⤵
    - Creates scheduled task(s)
    PID:1772
- - C:\Users\Admin\Windows\Windows Update.exe
    "C:\Users\Admin\Windows\Windows Update.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2036
  - - C:\Users\Admin\Windows\Windows Update.exe
      "C:\Users\Admin\Windows\Windows Update.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of AdjustPrivilegeToken
      PID:1952

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Web Service

T1102

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\Windows\Windows Update.exe

Filesize
66KB

MD5
8b3c21db4e4189d00b8da6db22ae7387

SHA1
6bd9edd982bb103c21b2a3072c16d0274d692f8e

SHA256
b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f

SHA512
1e551f14c66cdfd790c7cf8700e166dbfda95283b2247d200c02516ab676cebc0b6263250554436195efe2e8956be2d8406ebe82b7bee611fc238a9ff0fc86d2

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

Filesize
66KB

MD5
8b3c21db4e4189d00b8da6db22ae7387

SHA1
6bd9edd982bb103c21b2a3072c16d0274d692f8e

SHA256
b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f

SHA512
1e551f14c66cdfd790c7cf8700e166dbfda95283b2247d200c02516ab676cebc0b6263250554436195efe2e8956be2d8406ebe82b7bee611fc238a9ff0fc86d2

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

Filesize
66KB

MD5
8b3c21db4e4189d00b8da6db22ae7387

SHA1
6bd9edd982bb103c21b2a3072c16d0274d692f8e

SHA256
b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f

SHA512
1e551f14c66cdfd790c7cf8700e166dbfda95283b2247d200c02516ab676cebc0b6263250554436195efe2e8956be2d8406ebe82b7bee611fc238a9ff0fc86d2

Download Submit
\Users\Admin\Windows\Windows Update.exe

Filesize
66KB

MD5
8b3c21db4e4189d00b8da6db22ae7387

SHA1
6bd9edd982bb103c21b2a3072c16d0274d692f8e

SHA256
b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f

SHA512
1e551f14c66cdfd790c7cf8700e166dbfda95283b2247d200c02516ab676cebc0b6263250554436195efe2e8956be2d8406ebe82b7bee611fc238a9ff0fc86d2

Download Submit
\Users\Admin\Windows\Windows Update.exe

Filesize
66KB

MD5
8b3c21db4e4189d00b8da6db22ae7387

SHA1
6bd9edd982bb103c21b2a3072c16d0274d692f8e

SHA256
b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f

SHA512
1e551f14c66cdfd790c7cf8700e166dbfda95283b2247d200c02516ab676cebc0b6263250554436195efe2e8956be2d8406ebe82b7bee611fc238a9ff0fc86d2

Download Submit
memory/520-65-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/520-63-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/520-67-0x00000000759F1000-0x00000000759F3000-memory.dmp

Filesize
8KB

Download
memory/520-60-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/520-61-0x0000000000408D5E-mapping.dmp

Download
memory/520-59-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/520-57-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/520-56-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/748-54-0x0000000000190000-0x00000000001A6000-memory.dmp

Filesize
88KB

Download
memory/748-55-0x00000000003D0000-0x00000000003D8000-memory.dmp

Filesize
32KB

Download
memory/1772-66-0x0000000000000000-mapping.dmp

Download
memory/1952-79-0x0000000000408D5E-mapping.dmp

Download
memory/2036-69-0x0000000000000000-mapping.dmp

Download
memory/2036-72-0x0000000000F60000-0x0000000000F76000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads