limerat | edb31b7d2d275a69de5a06ccfed47cd8ebea043e1fe982afe206647c22e252ac

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
28-09-2024 02:04

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General

Target

Scan 001.exe
Size

884KB
MD5

9f9d2f84755edf531b370605b273bce8
SHA1

107bb8aff5f090223f34c5da6af3b97899ca66a0
SHA256

e424feff6970c9526c287c805fe886f8e4d37c4620094bc7b3619eb5a68e425f
SHA512

5a40406e8a03f1f16e540ceb6e5921260863850bf8f0f4ae58d2513567e0d82678886a135a3ad939a38384cc7696d010355c907e795b86d03c0f9d867af80b07
SSDEEP

24576:6NA3R5drXdtUjr21HwvzYIOVL8A1jZFQYcHO6lSe:z5bUjrCgzYT8A1jZ63Qe

Score

10^/10

limerat discovery evasion persistence rat

Malware Config

Extracted

Family

limerat

Attributes

aes_key
123456789
antivm
false
c2_url
https://pastebin.com/raw/5cXHFyui
delay
3
download_payload
false
install
true
install_name
Wservices.exe
main_folder
Temp
pin_spread
false
sub_folder
\
usb_spread
false

Signatures

LimeRAT
Simple yet powerful RAT for Windows machines written in .NET.
rat limerat
Disables Task Manager via registry modification
evasion

Executes dropped EXE 2 IoCs

Processes:

uepa.pifWservices.exe

pid	Process
2012	uepa.pif
2220	Wservices.exe

Loads dropped DLL 5 IoCs

Processes:

Scan 001.exeRegSvcs.exe

pid	Process
2112	Scan 001.exe
2112	Scan 001.exe
2112	Scan 001.exe
2112	Scan 001.exe
592	RegSvcs.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

uepa.pif

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\WindowsUpdate = "C:\\Users\\Admin\\68108315\\uepa.pif C:\\Users\\Admin\\68108315\\ggilu.kdb"	uepa.pif

Suspicious use of SetThreadContext 1 IoCs

Processes:

uepa.pif

description	pid	Process	procid_target
PID 2012 set thread context of 592	2012	uepa.pif	38

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 12 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

mshta.exeRegSvcs.exeuepa.pifmshta.exemshta.exemshta.exemshta.exemshta.exeschtasks.exeWservices.exeScan 001.exemshta.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mshta.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uepa.pif
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mshta.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mshta.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mshta.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mshta.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mshta.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Wservices.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Scan 001.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mshta.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

T1053.005

Processes:

schtasks.exe

pid	Process
1656	schtasks.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

Processes:

uepa.pifRegSvcs.exe

pid	Process
2012	uepa.pif
2012	uepa.pif
2012	uepa.pif
2012	uepa.pif
2012	uepa.pif
2012	uepa.pif
2012	uepa.pif
592	RegSvcs.exe
592	RegSvcs.exe
592	RegSvcs.exe
592	RegSvcs.exe

Suspicious use of WriteProcessMemory 52 IoCs

Processes:

Scan 001.exeuepa.pifRegSvcs.exe

description	pid	Process	procid_target
PID 2112 wrote to memory of 2012	2112	Scan 001.exe	30
PID 2112 wrote to memory of 2012	2112	Scan 001.exe	30
PID 2112 wrote to memory of 2012	2112	Scan 001.exe	30
PID 2112 wrote to memory of 2012	2112	Scan 001.exe	30
PID 2012 wrote to memory of 2832	2012	uepa.pif	31
PID 2012 wrote to memory of 2832	2012	uepa.pif	31
PID 2012 wrote to memory of 2832	2012	uepa.pif	31
PID 2012 wrote to memory of 2832	2012	uepa.pif	31
PID 2012 wrote to memory of 2292	2012	uepa.pif	32
PID 2012 wrote to memory of 2292	2012	uepa.pif	32
PID 2012 wrote to memory of 2292	2012	uepa.pif	32
PID 2012 wrote to memory of 2292	2012	uepa.pif	32
PID 2012 wrote to memory of 1704	2012	uepa.pif	33
PID 2012 wrote to memory of 1704	2012	uepa.pif	33
PID 2012 wrote to memory of 1704	2012	uepa.pif	33
PID 2012 wrote to memory of 1704	2012	uepa.pif	33
PID 2012 wrote to memory of 1488	2012	uepa.pif	34
PID 2012 wrote to memory of 1488	2012	uepa.pif	34
PID 2012 wrote to memory of 1488	2012	uepa.pif	34
PID 2012 wrote to memory of 1488	2012	uepa.pif	34
PID 2012 wrote to memory of 1680	2012	uepa.pif	35
PID 2012 wrote to memory of 1680	2012	uepa.pif	35
PID 2012 wrote to memory of 1680	2012	uepa.pif	35
PID 2012 wrote to memory of 1680	2012	uepa.pif	35
PID 2012 wrote to memory of 2868	2012	uepa.pif	36
PID 2012 wrote to memory of 2868	2012	uepa.pif	36
PID 2012 wrote to memory of 2868	2012	uepa.pif	36
PID 2012 wrote to memory of 2868	2012	uepa.pif	36
PID 2012 wrote to memory of 1988	2012	uepa.pif	37
PID 2012 wrote to memory of 1988	2012	uepa.pif	37
PID 2012 wrote to memory of 1988	2012	uepa.pif	37
PID 2012 wrote to memory of 1988	2012	uepa.pif	37
PID 2012 wrote to memory of 592	2012	uepa.pif	38
PID 2012 wrote to memory of 592	2012	uepa.pif	38
PID 2012 wrote to memory of 592	2012	uepa.pif	38
PID 2012 wrote to memory of 592	2012	uepa.pif	38
PID 2012 wrote to memory of 592	2012	uepa.pif	38
PID 2012 wrote to memory of 592	2012	uepa.pif	38
PID 2012 wrote to memory of 592	2012	uepa.pif	38
PID 2012 wrote to memory of 592	2012	uepa.pif	38
PID 2012 wrote to memory of 592	2012	uepa.pif	38
PID 592 wrote to memory of 1656	592	RegSvcs.exe	40
PID 592 wrote to memory of 1656	592	RegSvcs.exe	40
PID 592 wrote to memory of 1656	592	RegSvcs.exe	40
PID 592 wrote to memory of 1656	592	RegSvcs.exe	40
PID 592 wrote to memory of 2220	592	RegSvcs.exe	42
PID 592 wrote to memory of 2220	592	RegSvcs.exe	42
PID 592 wrote to memory of 2220	592	RegSvcs.exe	42
PID 592 wrote to memory of 2220	592	RegSvcs.exe	42
PID 592 wrote to memory of 2220	592	RegSvcs.exe	42
PID 592 wrote to memory of 2220	592	RegSvcs.exe	42
PID 592 wrote to memory of 2220	592	RegSvcs.exe	42

C:\Users\Admin\AppData\Local\Temp\Scan 001.exe
"C:\Users\Admin\AppData\Local\Temp\Scan 001.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2112
- C:\Users\Admin\68108315\uepa.pif
  "C:\Users\Admin\68108315\uepa.pif" ggilu.kdb
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2012
- - C:\Windows\SysWOW64\mshta.exe
    "C:\Windows\SysWOW64\mshta.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2832
- - C:\Windows\SysWOW64\mshta.exe
    "C:\Windows\SysWOW64\mshta.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2292
- - C:\Windows\SysWOW64\mshta.exe
    "C:\Windows\SysWOW64\mshta.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1704
- - C:\Windows\SysWOW64\mshta.exe
    "C:\Windows\SysWOW64\mshta.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1488
- - C:\Windows\SysWOW64\mshta.exe
    "C:\Windows\SysWOW64\mshta.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1680
- - C:\Windows\SysWOW64\mshta.exe
    "C:\Windows\SysWOW64\mshta.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2868
- - C:\Windows\SysWOW64\mshta.exe
    "C:\Windows\SysWOW64\mshta.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1988
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:592
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\AppData\Local\Temp\Wservices.exe'"
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:1656
  - - C:\Users\Admin\AppData\Local\Temp\Wservices.exe
      "C:\Users\Admin\AppData\Local\Temp\Wservices.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:2220

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\68108315\kivddcmfwg.jpg

Filesize
120KB

MD5
5c9b742a88475c55b8aa557526fa382a

SHA1
e2cdc4dd9a79ef514f010391a82ec1374b26156f

SHA256
444ea59d80a254592ebbf261fa0a5078d42746a7e76be10f072a41252a47601b

SHA512
8b2a601be5168d98b818c02dac2ee9616c69ddfdaf28a75d4420f8ee8c94aef7e02660d9bc5b388b640be1acd5d2fe04113c0bb97be3b3f6399da9f4daa2df9a

Download Submit
C:\Users\Admin\AppData\Local\Temp\Wservices.exe

Filesize
44KB

MD5
0e06054beb13192588e745ee63a84173

SHA1
30b7d4d1277bafd04a83779fd566a1f834a8d113

SHA256
c5d6d56ded55fbd6c150ee3a0eb2e5671cae83106be2be4d70ce50aa50bab768

SHA512
251a112f3f037e62ff67a467389e47a56afb344bc942b17efa9bd2970494718b26bbee9adc3ac35f93ee4d2114aa426b6d0ea4bafad294b6c118a15f1977c215

Download Submit
\Users\Admin\68108315\uepa.pif

Filesize
646KB

MD5
d3ffbde7ea1bcb2d0a6e6e12b0306625

SHA1
d8725bc8fdd1d5a5e7b9615dcd424bc9aa7322ff

SHA256
59e9d4edac6322ecfa53762dfaa541b2e6d7c3b0b9c6885fd7e0c3e18a38e14d

SHA512
70660fa375400b08610544b323dc7eb0f8258eda57822d1554f0811447a8e5fa0911e451a9a247a85a661cd5f7de8d6805e79617e62d5234bdf78e08b76b254a

Download Submit
memory/592-67-0x00000000003F0000-0x0000000000A72000-memory.dmp

Filesize
6.5MB

Download
memory/592-70-0x00000000003F0000-0x0000000000A72000-memory.dmp

Filesize
6.5MB

Download
memory/592-69-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/592-72-0x00000000003F0000-0x0000000000A72000-memory.dmp

Filesize
6.5MB

Download
memory/592-71-0x00000000003F0000-0x0000000000A72000-memory.dmp

Filesize
6.5MB

Download
memory/592-73-0x00000000003F0000-0x00000000003FC000-memory.dmp

Filesize
48KB

Download
memory/2220-81-0x0000000000250000-0x000000000025E000-memory.dmp

Filesize
56KB

Download
memory/2220-82-0x0000000000290000-0x00000000002B0000-memory.dmp

Filesize
128KB

Download