limerat | b2f67b7b8641b924f9679f751d155ec8401d41fc90be278853c1daedfe3f3f8f

Analysis

max time kernel
133s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20230221-en
resource tags

arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
submitted
17-03-2023 01:30

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General

Target

KarmaC2.exe
Size

29KB
MD5

0004261b01160f4adc3050e3be0a82ff
SHA1

155cacc06654342aa73c3335c2fe10ade7dc6120
SHA256

b2f67b7b8641b924f9679f751d155ec8401d41fc90be278853c1daedfe3f3f8f
SHA512

1ba0126579441d97b384743079412eaee6e773ea65dcb501acc97710eafb12102ced555cf366d0082f406d6108e8bd5a326425fe2766b0b385d709f38e88f15f
SSDEEP

384:4B+Sbj6NKgRO6lpFAHnEmoqDSHGc2keGQvDKNrCeJE3WNgPoNdMfnm5LW6OerudF:mpg06lpFwnAm5kHe45Nz8fm5L3O+Stj

Score

10^/10

limerat rat

Malware Config

Extracted

Family

limerat

Wallets

bc1q8n9tez4738fhu4zzv4kk3487ydq3ruagasdt08

Attributes

aes_key
serenityx.ddns.net
antivm
true
c2_url
https://pastebin.com/raw/2mVPRNdY
delay
3
download_payload
true
install
true
install_name
OneDrive.exe
main_folder
AppData
pin_spread
false
sub_folder
\Windows NT\
usb_spread
true

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

Processes:

KarmaC2.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Control Panel\International\Geo\Nation	KarmaC2.exe

Executes dropped EXE 1 IoCs

Processes:

OneDrive.exe

pid	Process
3844	OneDrive.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). Likely ransomware behaviour.

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

T1053

Processes:

schtasks.exe

pid	Process
3824	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

OneDrive.exe

description	pid	Process
Token: SeDebugPrivilege	3844	OneDrive.exe
Token: SeDebugPrivilege	3844	OneDrive.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

KarmaC2.exe

description	pid	Process	procid_target
PID 2720 wrote to memory of 3824	2720	KarmaC2.exe	86
PID 2720 wrote to memory of 3824	2720	KarmaC2.exe	86
PID 2720 wrote to memory of 3824	2720	KarmaC2.exe	86
PID 2720 wrote to memory of 3844	2720	KarmaC2.exe	88
PID 2720 wrote to memory of 3844	2720	KarmaC2.exe	88
PID 2720 wrote to memory of 3844	2720	KarmaC2.exe	88

C:\Users\Admin\AppData\Local\Temp\KarmaC2.exe
"C:\Users\Admin\AppData\Local\Temp\KarmaC2.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2720
- C:\Windows\SysWOW64\schtasks.exe
  schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\AppData\Roaming\Windows NT\OneDrive.exe'"
  2⤵
  - Creates scheduled task(s)
  PID:3824
- C:\Users\Admin\AppData\Roaming\Windows NT\OneDrive.exe
  "C:\Users\Admin\AppData\Roaming\Windows NT\OneDrive.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:3844

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Web Service

T1102

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Windows NT\OneDrive.exe

Filesize
29KB

MD5
0004261b01160f4adc3050e3be0a82ff

SHA1
155cacc06654342aa73c3335c2fe10ade7dc6120

SHA256
b2f67b7b8641b924f9679f751d155ec8401d41fc90be278853c1daedfe3f3f8f

SHA512
1ba0126579441d97b384743079412eaee6e773ea65dcb501acc97710eafb12102ced555cf366d0082f406d6108e8bd5a326425fe2766b0b385d709f38e88f15f

Download Submit
C:\Users\Admin\AppData\Roaming\Windows NT\OneDrive.exe

Filesize
29KB

MD5
0004261b01160f4adc3050e3be0a82ff

SHA1
155cacc06654342aa73c3335c2fe10ade7dc6120

SHA256
b2f67b7b8641b924f9679f751d155ec8401d41fc90be278853c1daedfe3f3f8f

SHA512
1ba0126579441d97b384743079412eaee6e773ea65dcb501acc97710eafb12102ced555cf366d0082f406d6108e8bd5a326425fe2766b0b385d709f38e88f15f

Download Submit
C:\Users\Admin\AppData\Roaming\Windows NT\OneDrive.exe

Filesize
29KB

MD5
0004261b01160f4adc3050e3be0a82ff

SHA1
155cacc06654342aa73c3335c2fe10ade7dc6120

SHA256
b2f67b7b8641b924f9679f751d155ec8401d41fc90be278853c1daedfe3f3f8f

SHA512
1ba0126579441d97b384743079412eaee6e773ea65dcb501acc97710eafb12102ced555cf366d0082f406d6108e8bd5a326425fe2766b0b385d709f38e88f15f

Download Submit
memory/2720-133-0x0000000000550000-0x000000000055C000-memory.dmp

Filesize
48KB

Download
memory/2720-134-0x0000000004EA0000-0x0000000004F3C000-memory.dmp

Filesize
624KB

Download
memory/2720-135-0x0000000004F40000-0x0000000004FA6000-memory.dmp

Filesize
408KB

Download
memory/2720-136-0x0000000005160000-0x0000000005170000-memory.dmp

Filesize
64KB

Download
memory/2720-137-0x0000000005B70000-0x0000000006114000-memory.dmp

Filesize
5.6MB

Download
memory/3844-147-0x0000000005590000-0x00000000055A0000-memory.dmp

Filesize
64KB

Download
memory/3844-148-0x0000000006020000-0x00000000060B2000-memory.dmp

Filesize
584KB

Download
memory/3844-149-0x0000000005590000-0x00000000055A0000-memory.dmp

Filesize
64KB

Download