limerat | edb31b7d2d275a69de5a06ccfed47cd8ebea043e1fe982afe206647c22e252ac

Analysis

max time kernel
91s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-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

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	Scan 001.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	uepa.pif

Executes dropped EXE 2 IoCs

pid	Process
2676	uepa.pif
4892	Wservices.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

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

description	pid	Process	procid_target
PID 2676 set thread context of 3100	2676	uepa.pif	102

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

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

pid	Process
3580	schtasks.exe

Suspicious behavior: EnumeratesProcesses 18 IoCs

pid	Process
2676	uepa.pif
2676	uepa.pif
2676	uepa.pif
2676	uepa.pif
2676	uepa.pif
2676	uepa.pif
2676	uepa.pif
2676	uepa.pif
2676	uepa.pif
2676	uepa.pif
2676	uepa.pif
2676	uepa.pif
2676	uepa.pif
2676	uepa.pif
3100	RegSvcs.exe
3100	RegSvcs.exe
3100	RegSvcs.exe
3100	RegSvcs.exe

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 3816 wrote to memory of 2676	3816	Scan 001.exe	84
PID 3816 wrote to memory of 2676	3816	Scan 001.exe	84
PID 3816 wrote to memory of 2676	3816	Scan 001.exe	84
PID 2676 wrote to memory of 4124	2676	uepa.pif	86
PID 2676 wrote to memory of 4124	2676	uepa.pif	86
PID 2676 wrote to memory of 4124	2676	uepa.pif	86
PID 2676 wrote to memory of 3936	2676	uepa.pif	87
PID 2676 wrote to memory of 3936	2676	uepa.pif	87
PID 2676 wrote to memory of 3936	2676	uepa.pif	87
PID 2676 wrote to memory of 3672	2676	uepa.pif	92
PID 2676 wrote to memory of 3672	2676	uepa.pif	92
PID 2676 wrote to memory of 3672	2676	uepa.pif	92
PID 2676 wrote to memory of 4600	2676	uepa.pif	96
PID 2676 wrote to memory of 4600	2676	uepa.pif	96
PID 2676 wrote to memory of 4600	2676	uepa.pif	96
PID 2676 wrote to memory of 748	2676	uepa.pif	97
PID 2676 wrote to memory of 748	2676	uepa.pif	97
PID 2676 wrote to memory of 748	2676	uepa.pif	97
PID 2676 wrote to memory of 868	2676	uepa.pif	99
PID 2676 wrote to memory of 868	2676	uepa.pif	99
PID 2676 wrote to memory of 868	2676	uepa.pif	99
PID 2676 wrote to memory of 920	2676	uepa.pif	101
PID 2676 wrote to memory of 920	2676	uepa.pif	101
PID 2676 wrote to memory of 920	2676	uepa.pif	101
PID 2676 wrote to memory of 3100	2676	uepa.pif	102
PID 2676 wrote to memory of 3100	2676	uepa.pif	102
PID 2676 wrote to memory of 3100	2676	uepa.pif	102
PID 2676 wrote to memory of 3100	2676	uepa.pif	102
PID 2676 wrote to memory of 3100	2676	uepa.pif	102
PID 3100 wrote to memory of 3580	3100	RegSvcs.exe	103
PID 3100 wrote to memory of 3580	3100	RegSvcs.exe	103
PID 3100 wrote to memory of 3580	3100	RegSvcs.exe	103
PID 3100 wrote to memory of 4892	3100	RegSvcs.exe	105
PID 3100 wrote to memory of 4892	3100	RegSvcs.exe	105
PID 3100 wrote to memory of 4892	3100	RegSvcs.exe	105

C:\Users\Admin\AppData\Local\Temp\Scan 001.exe
"C:\Users\Admin\AppData\Local\Temp\Scan 001.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3816
- C:\Users\Admin\68108315\uepa.pif
  "C:\Users\Admin\68108315\uepa.pif" ggilu.kdb
  2⤵
  - Checks computer location settings
  - 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:2676
- - C:\Windows\SysWOW64\mshta.exe
    "C:\Windows\SysWOW64\mshta.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4124
- - C:\Windows\SysWOW64\mshta.exe
    "C:\Windows\SysWOW64\mshta.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3936
- - C:\Windows\SysWOW64\mshta.exe
    "C:\Windows\SysWOW64\mshta.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3672
- - C:\Windows\SysWOW64\mshta.exe
    "C:\Windows\SysWOW64\mshta.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4600
- - C:\Windows\SysWOW64\mshta.exe
    "C:\Windows\SysWOW64\mshta.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:748
- - C:\Windows\SysWOW64\mshta.exe
    "C:\Windows\SysWOW64\mshta.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:868
- - C:\Windows\SysWOW64\mshta.exe
    "C:\Windows\SysWOW64\mshta.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:920
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:3100
  - - 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:3580
  - - 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:4892

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

Query Registry

T1012

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\68108315\uepa.pif

Filesize
646KB

MD5
d3ffbde7ea1bcb2d0a6e6e12b0306625

SHA1
d8725bc8fdd1d5a5e7b9615dcd424bc9aa7322ff

SHA256
59e9d4edac6322ecfa53762dfaa541b2e6d7c3b0b9c6885fd7e0c3e18a38e14d

SHA512
70660fa375400b08610544b323dc7eb0f8258eda57822d1554f0811447a8e5fa0911e451a9a247a85a661cd5f7de8d6805e79617e62d5234bdf78e08b76b254a

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

Filesize
44KB

MD5
9d352bc46709f0cb5ec974633a0c3c94

SHA1
1969771b2f022f9a86d77ac4d4d239becdf08d07

SHA256
2c1eeb7097023c784c2bd040a2005a5070ed6f3a4abf13929377a9e39fab1390

SHA512
13c714244ec56beeb202279e4109d59c2a43c3cf29f90a374a751c04fd472b45228ca5a0178f41109ed863dbd34e0879e4a21f5e38ae3d89559c57e6be990a9b

Download Submit
memory/3100-58-0x0000000000730000-0x0000000000DB2000-memory.dmp

Filesize
6.5MB

Download
memory/3100-59-0x0000000000730000-0x000000000073C000-memory.dmp

Filesize
48KB

Download
memory/3100-60-0x0000000005560000-0x00000000055FC000-memory.dmp

Filesize
624KB

Download
memory/3100-61-0x0000000005650000-0x00000000056B6000-memory.dmp

Filesize
408KB

Download
memory/3100-62-0x00000000061D0000-0x0000000006774000-memory.dmp

Filesize
5.6MB

Download
memory/4892-77-0x0000000001210000-0x0000000001231000-memory.dmp

Filesize
132KB

Download
memory/4892-76-0x0000000004FF0000-0x000000000502C000-memory.dmp

Filesize
240KB

Download
memory/4892-75-0x0000000000800000-0x000000000080E000-memory.dmp

Filesize
56KB

Download