limerat | 9bb9a1974de3b7ca8de3fd9afd7fb0f92d8f24c33b651584b2d7e2d0bd0da2fe

Analysis

max time kernel
145s
max time network
147s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
20/01/2024, 14:08

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General

Target

bTcG.exe
Size

28KB
MD5

8e1bb22b17551346730179e6616eb42e
SHA1

7d2482fd93f0824e4353522c68c0fd39af445fc0
SHA256

9bb9a1974de3b7ca8de3fd9afd7fb0f92d8f24c33b651584b2d7e2d0bd0da2fe
SHA512

ec3a09f32393ce91486342712e200d4d0e432f0df90a1e58dd8251281c5257372a31c50db1b5a3a0fb552fa179199d88359c07b63d6b896188dfe32cb5d18ee6
SSDEEP

768:EpDU6F1w9pXlmjF845NonMfo3z3aNHm4j:Epb1w9pIphknMAuH5

Score

10^/10

limerat rat

Malware Config

Extracted

Family

limerat

Attributes

aes_key
Kronic
antivm
true
c2_url
https://pastebin.com/raw/jxx7yjgK
delay
3
download_payload
false
install
true
install_name
MSIbuilder.exe
main_folder
AppData
pin_spread
true
sub_folder
\Service Windows\
usb_spread
true

Extracted

Family

limerat

Attributes

antivm
false
c2_url
https://pastebin.com/raw/jxx7yjgK
download_payload
false
install
false
pin_spread
false
usb_spread
false

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
2568	MSIbuilder.exe

Loads dropped DLL 2 IoCs

pid	Process
3040	bTcG.exe
3040	bTcG.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
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 1 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
2628	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2568	MSIbuilder.exe
Token: SeDebugPrivilege	2568	MSIbuilder.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3040 wrote to memory of 2628	3040	bTcG.exe	29
PID 3040 wrote to memory of 2628	3040	bTcG.exe	29
PID 3040 wrote to memory of 2628	3040	bTcG.exe	29
PID 3040 wrote to memory of 2628	3040	bTcG.exe	29
PID 3040 wrote to memory of 2568	3040	bTcG.exe	31
PID 3040 wrote to memory of 2568	3040	bTcG.exe	31
PID 3040 wrote to memory of 2568	3040	bTcG.exe	31
PID 3040 wrote to memory of 2568	3040	bTcG.exe	31

C:\Users\Admin\AppData\Local\Temp\bTcG.exe
"C:\Users\Admin\AppData\Local\Temp\bTcG.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3040
- C:\Windows\SysWOW64\schtasks.exe
  schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\AppData\Roaming\Service Windows\MSIbuilder.exe'"
  2⤵
  - Creates scheduled task(s)
  PID:2628
- C:\Users\Admin\AppData\Roaming\Service Windows\MSIbuilder.exe
  "C:\Users\Admin\AppData\Roaming\Service Windows\MSIbuilder.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2568

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

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\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

Filesize
65KB

MD5
ac05d27423a85adc1622c714f2cb6184

SHA1
b0fe2b1abddb97837ea0195be70ab2ff14d43198

SHA256
c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

SHA512
6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar3F96.tmp

Filesize
171KB

MD5
9c0c641c06238516f27941aa1166d427

SHA1
64cd549fb8cf014fcd9312aa7a5b023847b6c977

SHA256
4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

SHA512
936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

Download Submit
\Users\Admin\AppData\Roaming\Service Windows\MSIbuilder.exe

Filesize
28KB

MD5
8e1bb22b17551346730179e6616eb42e

SHA1
7d2482fd93f0824e4353522c68c0fd39af445fc0

SHA256
9bb9a1974de3b7ca8de3fd9afd7fb0f92d8f24c33b651584b2d7e2d0bd0da2fe

SHA512
ec3a09f32393ce91486342712e200d4d0e432f0df90a1e58dd8251281c5257372a31c50db1b5a3a0fb552fa179199d88359c07b63d6b896188dfe32cb5d18ee6

Download Submit
memory/2568-13-0x0000000000D30000-0x0000000000D3C000-memory.dmp

Filesize
48KB

Download
memory/2568-14-0x0000000074750000-0x0000000074E3E000-memory.dmp

Filesize
6.9MB

Download
memory/2568-16-0x0000000000BD0000-0x0000000000C10000-memory.dmp

Filesize
256KB

Download
memory/2568-53-0x0000000074750000-0x0000000074E3E000-memory.dmp

Filesize
6.9MB

Download
memory/3040-0-0x0000000000210000-0x000000000021C000-memory.dmp

Filesize
48KB

Download
memory/3040-1-0x0000000074750000-0x0000000074E3E000-memory.dmp

Filesize
6.9MB

Download
memory/3040-3-0x0000000005030000-0x0000000005070000-memory.dmp

Filesize
256KB

Download
memory/3040-15-0x0000000074750000-0x0000000074E3E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads