limerat | f55871df9e8ca3a99a34e3b3345fed1daaf371f77b7c0a668a5f34b60fc0ce35

Resubmissions

28-09-2023 20:45

230928-zj1ahaed41 10

28-09-2023 20:41

230928-zgxrlaed4v 10

28-09-2023 20:41

230928-zgfhbafg57 10

28-09-2023 20:39

230928-zfgc8afg48 10

Analysis

max time kernel
60s
max time network
65s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
28-09-2023 20:39

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General

Target

New-Client.exe
Size

25KB
MD5

cdfc36ba42665419295b0c68dde39430
SHA1

6b577e002d35133a846ef05fe03b5b250c37e8d4
SHA256

f55871df9e8ca3a99a34e3b3345fed1daaf371f77b7c0a668a5f34b60fc0ce35
SHA512

6f25cce90d2a0e3bc97db1c8b090c0c6602eb6393c8096ae1774bc1d8bf02e380ed72690917a2eea25f8cdcd5b41ca7d0939720deffec4ef935609d44de01454
SSDEEP

384:CB+Sbj6NKwSs6/DAH92Xyh34EnWb5j4kDhlzCTJEUmNYEYQro3lch1Fnsjr:4pwP6/Dw9FaE+RHtN8i1ej

Score

10^/10

limerat rat

Malware Config

Extracted

Family

limerat

Attributes

aes_key
adlan
antivm
false
c2_url
https://pastebin.com/raw/EsJXyyQv
delay
3
download_payload
false
install
true
install_name
Svchost.exe
main_folder
AppData
pin_spread
true
sub_folder
\Schost\
usb_spread
true

Extracted

Family

limerat

Attributes

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

Processes:

New-Client.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1141987721-3945596982-3297311814-1000\Control Panel\International\Geo\Nation	New-Client.exe

Executes dropped EXE 1 IoCs

Processes:

Svchost.exe

pid process

2036 Svchost.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).

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/Job
T1053

Processes:

schtasks.exe

pid process

3632 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

Svchost.exe

pid process

2036 Svchost.exe
2036 Svchost.exe
2036 Svchost.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Svchost.exe

description pid process

Token: SeDebugPrivilege 2036 Svchost.exe
Token: SeDebugPrivilege 2036 Svchost.exe

pid	process
2036	Svchost.exe

pid	process
3632	schtasks.exe

pid	process
2036	Svchost.exe
2036	Svchost.exe
2036	Svchost.exe

description	pid	process
Token: SeDebugPrivilege	2036	Svchost.exe
Token: SeDebugPrivilege	2036	Svchost.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

New-Client.exe

description	pid	process	target process
PID 812 wrote to memory of 3632	812	New-Client.exe	schtasks.exe
PID 812 wrote to memory of 3632	812	New-Client.exe	schtasks.exe
PID 812 wrote to memory of 3632	812	New-Client.exe	schtasks.exe
PID 812 wrote to memory of 2036	812	New-Client.exe	Svchost.exe
PID 812 wrote to memory of 2036	812	New-Client.exe	Svchost.exe
PID 812 wrote to memory of 2036	812	New-Client.exe	Svchost.exe

C:\Users\Admin\AppData\Local\Temp\New-Client.exe
"C:\Users\Admin\AppData\Local\Temp\New-Client.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:812
- C:\Windows\SysWOW64\schtasks.exe
  schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\AppData\Roaming\Schost\Svchost.exe'"
  2⤵
  - Creates scheduled task(s)
  PID:3632
- C:\Users\Admin\AppData\Roaming\Schost\Svchost.exe
  "C:\Users\Admin\AppData\Roaming\Schost\Svchost.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2036

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

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\Schost\Svchost.exe

Filesize
25KB

MD5
cdfc36ba42665419295b0c68dde39430

SHA1
6b577e002d35133a846ef05fe03b5b250c37e8d4

SHA256
f55871df9e8ca3a99a34e3b3345fed1daaf371f77b7c0a668a5f34b60fc0ce35

SHA512
6f25cce90d2a0e3bc97db1c8b090c0c6602eb6393c8096ae1774bc1d8bf02e380ed72690917a2eea25f8cdcd5b41ca7d0939720deffec4ef935609d44de01454

Download Submit
C:\Users\Admin\AppData\Roaming\Schost\Svchost.exe

Filesize
25KB

MD5
cdfc36ba42665419295b0c68dde39430

SHA1
6b577e002d35133a846ef05fe03b5b250c37e8d4

SHA256
f55871df9e8ca3a99a34e3b3345fed1daaf371f77b7c0a668a5f34b60fc0ce35

SHA512
6f25cce90d2a0e3bc97db1c8b090c0c6602eb6393c8096ae1774bc1d8bf02e380ed72690917a2eea25f8cdcd5b41ca7d0939720deffec4ef935609d44de01454

Download Submit
C:\Users\Admin\AppData\Roaming\Schost\Svchost.exe

Filesize
25KB

MD5
cdfc36ba42665419295b0c68dde39430

SHA1
6b577e002d35133a846ef05fe03b5b250c37e8d4

SHA256
f55871df9e8ca3a99a34e3b3345fed1daaf371f77b7c0a668a5f34b60fc0ce35

SHA512
6f25cce90d2a0e3bc97db1c8b090c0c6602eb6393c8096ae1774bc1d8bf02e380ed72690917a2eea25f8cdcd5b41ca7d0939720deffec4ef935609d44de01454

Download Submit
memory/812-3-0x0000000005870000-0x00000000058D6000-memory.dmp

Filesize
408KB

Download
memory/812-4-0x00000000059F0000-0x0000000005A00000-memory.dmp

Filesize
64KB

Download
memory/812-5-0x00000000065B0000-0x0000000006B54000-memory.dmp

Filesize
5.6MB

Download
memory/812-1-0x00000000745C0000-0x0000000074D70000-memory.dmp

Filesize
7.7MB

Download
memory/812-2-0x0000000005770000-0x000000000580C000-memory.dmp

Filesize
624KB

Download
memory/812-0-0x0000000000DF0000-0x0000000000DFC000-memory.dmp

Filesize
48KB

Download
memory/812-15-0x00000000745C0000-0x0000000074D70000-memory.dmp

Filesize
7.7MB

Download
memory/2036-16-0x00000000745C0000-0x0000000074D70000-memory.dmp

Filesize
7.7MB

Download
memory/2036-17-0x00000000745C0000-0x0000000074D70000-memory.dmp

Filesize
7.7MB

Download
memory/2036-18-0x00000000074F0000-0x0000000007582000-memory.dmp

Filesize
584KB

Download