limerat | b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f

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

Processes:

Windows Update.exeWindows Update.exe

pid	Process
3456	Windows Update.exe
1704	Windows Update.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:

b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Suspicious use of SetThreadContext 2 IoCs

Processes:

b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exeWindows Update.exe

description	pid	Process	procid_target
PID 3892 set thread context of 4772	3892	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	81
PID 3456 set thread context of 1704	3456	Windows Update.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
5032	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Windows Update.exe

description	pid	Process
Token: SeDebugPrivilege	1704	Windows Update.exe
Token: SeDebugPrivilege	1704	Windows Update.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exeb31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exeWindows Update.exe

description	pid	Process	procid_target
PID 3892 wrote to memory of 4772	3892	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	81
PID 3892 wrote to memory of 4772	3892	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	81
PID 3892 wrote to memory of 4772	3892	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	81
PID 3892 wrote to memory of 4772	3892	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	81
PID 3892 wrote to memory of 4772	3892	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	81
PID 3892 wrote to memory of 4772	3892	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	81
PID 3892 wrote to memory of 4772	3892	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	81
PID 4772 wrote to memory of 5032	4772	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	83
PID 4772 wrote to memory of 5032	4772	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	83
PID 4772 wrote to memory of 5032	4772	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	83
PID 4772 wrote to memory of 3456	4772	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	85
PID 4772 wrote to memory of 3456	4772	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	85
PID 4772 wrote to memory of 3456	4772	b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe	85
PID 3456 wrote to memory of 1704	3456	Windows Update.exe	86
PID 3456 wrote to memory of 1704	3456	Windows Update.exe	86
PID 3456 wrote to memory of 1704	3456	Windows Update.exe	86
PID 3456 wrote to memory of 1704	3456	Windows Update.exe	86
PID 3456 wrote to memory of 1704	3456	Windows Update.exe	86
PID 3456 wrote to memory of 1704	3456	Windows Update.exe	86
PID 3456 wrote to memory of 1704	3456	Windows Update.exe	86

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:3892
- C:\Users\Admin\AppData\Local\Temp\b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe
  "C:\Users\Admin\AppData\Local\Temp\b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:4772
- - 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:5032
- - C:\Users\Admin\Windows\Windows Update.exe
    "C:\Users\Admin\Windows\Windows Update.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:3456
  - - C:\Users\Admin\Windows\Windows Update.exe
      "C:\Users\Admin\Windows\Windows Update.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of AdjustPrivilegeToken
      PID:1704

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Web Service

1

T1102

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

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\Windows Update.exe.log

Filesize
226B

MD5
916851e072fbabc4796d8916c5131092

SHA1
d48a602229a690c512d5fdaf4c8d77547a88e7a2

SHA256
7e750c904c43d27c89e55af809a679a96c0bb63fc511006ffbceffc2c7f6fb7d

SHA512
07ce4c881d6c411cac0b62364377e77950797c486804fb10d00555458716e3c47b1efc0d1f37e4cc3b7e6565bb402ca01c7ea8c963f9f9ace941a6e3883d2521

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f.exe.log

Filesize
226B

MD5
916851e072fbabc4796d8916c5131092

SHA1
d48a602229a690c512d5fdaf4c8d77547a88e7a2

SHA256
7e750c904c43d27c89e55af809a679a96c0bb63fc511006ffbceffc2c7f6fb7d

SHA512
07ce4c881d6c411cac0b62364377e77950797c486804fb10d00555458716e3c47b1efc0d1f37e4cc3b7e6565bb402ca01c7ea8c963f9f9ace941a6e3883d2521

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

Filesize
66KB

MD5
8b3c21db4e4189d00b8da6db22ae7387

SHA1
6bd9edd982bb103c21b2a3072c16d0274d692f8e

SHA256
b31de3ea02144147649b6d3f04abf7b6186a5e783a63bb3b04a3552c153a397f

SHA512
1e551f14c66cdfd790c7cf8700e166dbfda95283b2247d200c02516ab676cebc0b6263250554436195efe2e8956be2d8406ebe82b7bee611fc238a9ff0fc86d2

Download Submit
memory/1704-143-0x0000000000000000-mapping.dmp

Download
memory/3456-140-0x0000000000000000-mapping.dmp

Download
memory/3892-132-0x0000000000530000-0x0000000000546000-memory.dmp

Filesize
88KB

Download
memory/4772-134-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/4772-136-0x00000000054A0000-0x000000000553C000-memory.dmp

Filesize
624KB

Download
memory/4772-137-0x0000000005400000-0x0000000005466000-memory.dmp

Filesize
408KB

Download
memory/4772-138-0x00000000060B0000-0x0000000006654000-memory.dmp

Filesize
5.6MB

Download
memory/4772-133-0x0000000000000000-mapping.dmp

Download
memory/5032-139-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads