limerat | 98bd317536a3897e12a06396535593e6df8d2bef351f0f4e4f248e71c26cbbc7

Analysis

max time kernel
136s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
17/08/2024, 19:44

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General

Target
a3e1ee0eaca1c17b5c1956bd09d198b0_JaffaCakes118.exe
Size 332KB
Sample240817-yf4yvatalh
SHA256 98bd317536a3897e12a06396535593e6df8d2bef351f0f4e4f248e71c26cbbc7
MD5 a3e1ee0eaca1c17b5c1956bd09d198b0
SHA1 840f647a39d9d520441ebc4d8f58e215fbcafcd3
SHA512 189bbf227ef0886d2a2154f9effa76882024ba5a21f2fbdcbb90dce28473e77a216e9a0a509c221c7add03be36f835819fc710128fe03d5f828638702294f59e
SSDEEP 6144:rP0d79h8N+c8ruZNX0d8vHDOCELIu/Q7gQQBjsj6tD4IA4T1qR:ro9CF+SNXUAHkP/SPQBjsrm1
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

limerat discovery 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

Extracted

Family

limerat

Attributes

antivm
false
c2_url
https://pastebin.com/raw/p8Be8nNX
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

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	a3e1ee0eaca1c17b5c1956bd09d198b0_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
4948	Windows Update.exe
4552	Windows Update.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
29	pastebin.com
28	pastebin.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 804 set thread context of 4020	804	a3e1ee0eaca1c17b5c1956bd09d198b0_JaffaCakes118.exe	86
PID 4948 set thread context of 4552	4948	Windows Update.exe	95

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 5 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	a3e1ee0eaca1c17b5c1956bd09d198b0_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a3e1ee0eaca1c17b5c1956bd09d198b0_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Windows Update.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Windows Update.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
5032	schtasks.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	804	a3e1ee0eaca1c17b5c1956bd09d198b0_JaffaCakes118.exe
Token: SeDebugPrivilege	4948	Windows Update.exe
Token: SeDebugPrivilege	4552	Windows Update.exe
Token: SeDebugPrivilege	4552	Windows Update.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 804 wrote to memory of 4020	804	a3e1ee0eaca1c17b5c1956bd09d198b0_JaffaCakes118.exe	86
PID 804 wrote to memory of 4020	804	a3e1ee0eaca1c17b5c1956bd09d198b0_JaffaCakes118.exe	86
PID 804 wrote to memory of 4020	804	a3e1ee0eaca1c17b5c1956bd09d198b0_JaffaCakes118.exe	86
PID 804 wrote to memory of 4020	804	a3e1ee0eaca1c17b5c1956bd09d198b0_JaffaCakes118.exe	86
PID 804 wrote to memory of 4020	804	a3e1ee0eaca1c17b5c1956bd09d198b0_JaffaCakes118.exe	86
PID 804 wrote to memory of 4020	804	a3e1ee0eaca1c17b5c1956bd09d198b0_JaffaCakes118.exe	86
PID 804 wrote to memory of 4020	804	a3e1ee0eaca1c17b5c1956bd09d198b0_JaffaCakes118.exe	86
PID 4020 wrote to memory of 5032	4020	a3e1ee0eaca1c17b5c1956bd09d198b0_JaffaCakes118.exe	92
PID 4020 wrote to memory of 5032	4020	a3e1ee0eaca1c17b5c1956bd09d198b0_JaffaCakes118.exe	92
PID 4020 wrote to memory of 5032	4020	a3e1ee0eaca1c17b5c1956bd09d198b0_JaffaCakes118.exe	92
PID 4020 wrote to memory of 4948	4020	a3e1ee0eaca1c17b5c1956bd09d198b0_JaffaCakes118.exe	94
PID 4020 wrote to memory of 4948	4020	a3e1ee0eaca1c17b5c1956bd09d198b0_JaffaCakes118.exe	94
PID 4020 wrote to memory of 4948	4020	a3e1ee0eaca1c17b5c1956bd09d198b0_JaffaCakes118.exe	94
PID 4948 wrote to memory of 4552	4948	Windows Update.exe	95
PID 4948 wrote to memory of 4552	4948	Windows Update.exe	95
PID 4948 wrote to memory of 4552	4948	Windows Update.exe	95
PID 4948 wrote to memory of 4552	4948	Windows Update.exe	95
PID 4948 wrote to memory of 4552	4948	Windows Update.exe	95
PID 4948 wrote to memory of 4552	4948	Windows Update.exe	95
PID 4948 wrote to memory of 4552	4948	Windows Update.exe	95

C:\Users\Admin\AppData\Local\Temp\a3e1ee0eaca1c17b5c1956bd09d198b0_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a3e1ee0eaca1c17b5c1956bd09d198b0_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:804
- C:\Users\Admin\AppData\Local\Temp\a3e1ee0eaca1c17b5c1956bd09d198b0_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\a3e1ee0eaca1c17b5c1956bd09d198b0_JaffaCakes118.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4020
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\Windows\Windows Update.exe'"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:5032
- - C:\Users\Admin\Windows\Windows Update.exe
    "C:\Users\Admin\Windows\Windows Update.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4948
  - - C:\Users\Admin\Windows\Windows Update.exe
      "C:\Users\Admin\Windows\Windows Update.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      PID:4552

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

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

Web Service

T1102

Exfiltration

Impact

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Downloads

a3e1ee0eaca1c17b5c1956bd09d198b0_JaffaCakes118.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\a3e1ee0eaca1c17b5c1956bd09d198b0_JaffaCakes118.exe.log
Size 425B
SHA256 34ba0ab8d1850e7825763f413142a333ccbc05fa2b5499a28a7d27b8a1c5b4bb
MD5 4eaca4566b22b01cd3bc115b9b0b2196
SHA1 e743e0792c19f71740416e7b3c061d9f1336bf94
SHA512 bc2b1bf45203e3bb3009a7d37617b8f0f7ffa613680b32de2b963e39d2cf1650614d7035a0cf78f35a4f5cb17a2a439e2e07deaefd2a4275a62efd0a5c0184a1
MD5 SHA1 SHA512

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Windows Update.exe

Path C:\Users\Admin\Windows\Windows Update.exe
Size 332KB
SHA256 98bd317536a3897e12a06396535593e6df8d2bef351f0f4e4f248e71c26cbbc7
MD5 a3e1ee0eaca1c17b5c1956bd09d198b0
SHA1 840f647a39d9d520441ebc4d8f58e215fbcafcd3
SHA512 189bbf227ef0886d2a2154f9effa76882024ba5a21f2fbdcbb90dce28473e77a216e9a0a509c221c7add03be36f835819fc710128fe03d5f828638702294f59e
SSDEEP 6144:rP0d79h8N+c8ruZNX0d8vHDOCELIu/Q7gQQBjsj6tD4IA4T1qR:ro9CF+SNXUAHkP/SPQBjsrm1
MD5 SHA1 SHA512 SSDEEP

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memory/804-0-0x000000007474E000-0x000000007474F000-memory.dmp

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memory/804-1-0x00000000006F0000-0x000000000074A000-memory.dmp

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memory/804-2-0x0000000074740000-0x0000000074EF0000-memory.dmp

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memory/804-3-0x0000000074740000-0x0000000074EF0000-memory.dmp

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memory/804-4-0x0000000002AD0000-0x0000000002AD8000-memory.dmp

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memory/804-8-0x0000000074740000-0x0000000074EF0000-memory.dmp

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memory/4020-9-0x0000000074740000-0x0000000074EF0000-memory.dmp

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memory/4020-10-0x00000000057A0000-0x000000000583C000-memory.dmp

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memory/4020-11-0x0000000005900000-0x0000000005966000-memory.dmp

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memory/4020-12-0x0000000074740000-0x0000000074EF0000-memory.dmp

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memory/4020-13-0x00000000065A0000-0x0000000006B44000-memory.dmp

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memory/4020-5-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/4020-25-0x0000000074740000-0x0000000074EF0000-memory.dmp

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memory/4948-26-0x0000000074740000-0x0000000074EF0000-memory.dmp

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memory/4948-27-0x0000000074740000-0x0000000074EF0000-memory.dmp

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memory/4948-28-0x0000000074740000-0x0000000074EF0000-memory.dmp

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memory/4948-33-0x0000000074740000-0x0000000074EF0000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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