limerat | 78aa904a6d06db0ae3190ffdecda755b20e7c4dff3c8dd2061a7d35e7171d5ca

Analysis

max time kernel
100s
max time network
140s
platform
windows10_x64
resource
win10v20201028
submitted
03/12/2020, 08:36

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General

Target
officialdoc!_013_2020.exe
Size 225KB
Sample201203-5faj5lcgts
SHA256 78aa904a6d06db0ae3190ffdecda755b20e7c4dff3c8dd2061a7d35e7171d5ca
MD5 084eecf7d4654a7e7f4a7c4e6044c967
SHA1 e481123bb8cf1a5790cbe9be9727ce37f511bda8
SHA512 7a7f5f4173667389d7736b922b6fc4576f115418d91ea47af9ec76f1261c430a1c629d01690bba41178df370a3e05d0e0b792631daab8642a515daa7fe66af5f
MD5 SHA1 SHA512

Score

10^/10

limerat nanocore redline infostealer keylogger rat spyware stealer trojan

Malware Config

Extracted

Family

limerat

Wallets

1HWT2xVoQathmVB5JBzhBMTfTh4sZH8iqZ

Attributes

aes_key
amanda
antivm
false
c2_url
https://pastebin.com/raw/8MC17U5q
delay
3
download_payload
true
install
true
install_name
OfficialDoc.exe
main_folder
Temp
payload_url
Downloads\xfiles.pdf
pin_spread
false
sub_folder
\
usb_spread
true

Signatures

LimeRAT
Simple yet powerful RAT for Windows machines written in .NET.
rat limerat
NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore
RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
infostealer redline

RedLine Payload 9 IoCs

resource	yara_rule
behavioral2/memory/3356-47-0x0000000000000000-mapping.dmp	family_redline
behavioral2/memory/3356-48-0x0000000000000000-mapping.dmp	family_redline
behavioral2/memory/3356-51-0x0000000000000000-mapping.dmp	family_redline
behavioral2/memory/3356-52-0x0000000000000000-mapping.dmp	family_redline
behavioral2/memory/3356-53-0x0000000000000000-mapping.dmp	family_redline
behavioral2/memory/3356-54-0x0000000000000000-mapping.dmp	family_redline
behavioral2/memory/3356-49-0x0000000000000000-mapping.dmp	family_redline
behavioral2/memory/3356-55-0x0000000000000000-mapping.dmp	family_redline
behavioral2/memory/3356-56-0x0000000000000000-mapping.dmp	family_redline

Executes dropped EXE 2 IoCs

pid	Process
3356	OfficialDoc.exe
4088	OfficialDoc.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 30 IoCs

pid	Process
648	officialdoc!_013_2020.exe
648	officialdoc!_013_2020.exe
648	officialdoc!_013_2020.exe
648	officialdoc!_013_2020.exe
648	officialdoc!_013_2020.exe
648	officialdoc!_013_2020.exe
648	officialdoc!_013_2020.exe
648	officialdoc!_013_2020.exe
648	officialdoc!_013_2020.exe
648	officialdoc!_013_2020.exe
648	officialdoc!_013_2020.exe
648	officialdoc!_013_2020.exe
648	officialdoc!_013_2020.exe
648	officialdoc!_013_2020.exe
648	officialdoc!_013_2020.exe
3356	OfficialDoc.exe
3356	OfficialDoc.exe
3356	OfficialDoc.exe
3356	OfficialDoc.exe
3356	OfficialDoc.exe
3356	OfficialDoc.exe
3356	OfficialDoc.exe
3356	OfficialDoc.exe
3356	OfficialDoc.exe
3356	OfficialDoc.exe
3356	OfficialDoc.exe
3356	OfficialDoc.exe
3356	OfficialDoc.exe
3356	OfficialDoc.exe
3356	OfficialDoc.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 648 set thread context of 1376	648	officialdoc!_013_2020.exe	80
PID 3356 set thread context of 4088	3356	OfficialDoc.exe	90

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1372	648	WerFault.exe	67
1028	3356	WerFault.exe	86

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
3804	schtasks.exe

Delays execution with timeout.exe 2 IoCs

evasion

pid	Process
3412	timeout.exe
208	timeout.exe

Suspicious behavior: EnumeratesProcesses 35 IoCs

pid	Process
648	officialdoc!_013_2020.exe
648	officialdoc!_013_2020.exe
648	officialdoc!_013_2020.exe
1372	WerFault.exe
1372	WerFault.exe
1372	WerFault.exe
1372	WerFault.exe
1372	WerFault.exe
1372	WerFault.exe
1372	WerFault.exe
1372	WerFault.exe
1372	WerFault.exe
1372	WerFault.exe
1372	WerFault.exe
1372	WerFault.exe
1372	WerFault.exe
1372	WerFault.exe
3356	OfficialDoc.exe
3356	OfficialDoc.exe
3356	OfficialDoc.exe
1028	WerFault.exe
1028	WerFault.exe
1028	WerFault.exe
1028	WerFault.exe
1028	WerFault.exe
1028	WerFault.exe
1028	WerFault.exe
1028	WerFault.exe
1028	WerFault.exe
1028	WerFault.exe
1028	WerFault.exe
1028	WerFault.exe
1028	WerFault.exe
1028	WerFault.exe
1028	WerFault.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	648	officialdoc!_013_2020.exe
Token: SeRestorePrivilege	1372	WerFault.exe
Token: SeBackupPrivilege	1372	WerFault.exe
Token: SeDebugPrivilege	1372	WerFault.exe
Token: SeDebugPrivilege	3356	OfficialDoc.exe
Token: SeDebugPrivilege	1028	WerFault.exe
Token: SeDebugPrivilege	4088	OfficialDoc.exe
Token: SeDebugPrivilege	4088	OfficialDoc.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 648 wrote to memory of 3456	648	officialdoc!_013_2020.exe	75
PID 648 wrote to memory of 3456	648	officialdoc!_013_2020.exe	75
PID 648 wrote to memory of 3456	648	officialdoc!_013_2020.exe	75
PID 3456 wrote to memory of 3412	3456	cmd.exe	77
PID 3456 wrote to memory of 3412	3456	cmd.exe	77
PID 3456 wrote to memory of 3412	3456	cmd.exe	77
PID 648 wrote to memory of 1376	648	officialdoc!_013_2020.exe	80
PID 648 wrote to memory of 1376	648	officialdoc!_013_2020.exe	80
PID 648 wrote to memory of 1376	648	officialdoc!_013_2020.exe	80
PID 648 wrote to memory of 1376	648	officialdoc!_013_2020.exe	80
PID 648 wrote to memory of 1376	648	officialdoc!_013_2020.exe	80
PID 648 wrote to memory of 1376	648	officialdoc!_013_2020.exe	80
PID 648 wrote to memory of 1376	648	officialdoc!_013_2020.exe	80
PID 648 wrote to memory of 1376	648	officialdoc!_013_2020.exe	80
PID 1376 wrote to memory of 3804	1376	officialdoc!_013_2020.exe	84
PID 1376 wrote to memory of 3804	1376	officialdoc!_013_2020.exe	84
PID 1376 wrote to memory of 3804	1376	officialdoc!_013_2020.exe	84
PID 1376 wrote to memory of 3356	1376	officialdoc!_013_2020.exe	86
PID 1376 wrote to memory of 3356	1376	officialdoc!_013_2020.exe	86
PID 1376 wrote to memory of 3356	1376	officialdoc!_013_2020.exe	86
PID 3356 wrote to memory of 3968	3356	OfficialDoc.exe	87
PID 3356 wrote to memory of 3968	3356	OfficialDoc.exe	87
PID 3356 wrote to memory of 3968	3356	OfficialDoc.exe	87
PID 3968 wrote to memory of 208	3968	cmd.exe	89
PID 3968 wrote to memory of 208	3968	cmd.exe	89
PID 3968 wrote to memory of 208	3968	cmd.exe	89
PID 3356 wrote to memory of 4088	3356	OfficialDoc.exe	90
PID 3356 wrote to memory of 4088	3356	OfficialDoc.exe	90
PID 3356 wrote to memory of 4088	3356	OfficialDoc.exe	90
PID 3356 wrote to memory of 4088	3356	OfficialDoc.exe	90
PID 3356 wrote to memory of 4088	3356	OfficialDoc.exe	90
PID 3356 wrote to memory of 4088	3356	OfficialDoc.exe	90
PID 3356 wrote to memory of 4088	3356	OfficialDoc.exe	90
PID 3356 wrote to memory of 4088	3356	OfficialDoc.exe	90

C:\Users\Admin\AppData\Local\Temp\officialdoc!_013_2020.exe
"C:\Users\Admin\AppData\Local\Temp\officialdoc!_013_2020.exe"
1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:648
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout 4.669
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3456
- - C:\Windows\SysWOW64\timeout.exe
    timeout 4.669
    3⤵
    - Delays execution with timeout.exe
    PID:3412
- C:\Users\Admin\AppData\Local\Temp\officialdoc!_013_2020.exe
  "C:\Users\Admin\AppData\Local\Temp\officialdoc!_013_2020.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1376
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\AppData\Local\Temp\OfficialDoc.exe'"
    3⤵
    - Creates scheduled task(s)
    PID:3804
- - C:\Users\Admin\AppData\Local\Temp\OfficialDoc.exe
    "C:\Users\Admin\AppData\Local\Temp\OfficialDoc.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3356
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 4.669
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3968
    - - C:\Windows\SysWOW64\timeout.exe
        
        timeout 4.669
        5⤵
        Delays execution with timeout.exe
        
        PID:208
  - - C:\Users\Admin\AppData\Local\Temp\OfficialDoc.exe
      "C:\Users\Admin\AppData\Local\Temp\OfficialDoc.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of AdjustPrivilegeToken
      PID:4088
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3356 -s 2028
      4⤵
      Program crash
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1028
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 648 -s 2028
  2⤵
  - Program crash
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1372

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/648-3-0x0000000000D20000-0x0000000000D21000-memory.dmp

Download

memory/648-5-0x0000000005510000-0x0000000005511000-memory.dmp

Download

memory/648-8-0x0000000007BC0000-0x0000000007BC1000-memory.dmp

Download

memory/648-11-0x00000000076C0000-0x0000000007726000-memory.dmp

Download

memory/648-2-0x0000000073F80000-0x000000007466E000-memory.dmp

Download

memory/1028-63-0x0000000005840000-0x0000000005841000-memory.dmp

Download

memory/1028-46-0x0000000004F00000-0x0000000004F01000-memory.dmp

Download

memory/1372-18-0x0000000004DC0000-0x0000000004DC1000-memory.dmp

Download

memory/1372-20-0x00000000055C0000-0x00000000055C1000-memory.dmp

Download

memory/1372-19-0x00000000051C0000-0x00000000051C1000-memory.dmp

Download

memory/1376-25-0x0000000004FD0000-0x0000000004FD1000-memory.dmp

Download

memory/1376-12-0x0000000000400000-0x0000000000440000-memory.dmp

Download

memory/1376-14-0x0000000073F80000-0x000000007466E000-memory.dmp

Download

memory/3356-31-0x0000000073F80000-0x000000007466E000-memory.dmp

Download

memory/4088-42-0x0000000073F80000-0x000000007466E000-memory.dmp

Download

memory/4088-65-0x0000000006130000-0x0000000006131000-memory.dmp

Download