limerat | f81bc717944ec8a599c8276d9d3b1de4b995d5570139590d263b39e47e87ba3d

General

Target

xdwd.exe
Size

25KB
MD5

aae04417cc07c39988d4fbe0e85fc9bd
SHA1

2d51b49f8f1faeba674dd0993911e8f65b4d2258
SHA256

f81bc717944ec8a599c8276d9d3b1de4b995d5570139590d263b39e47e87ba3d
SHA512

53cc6468da9be1f4a3cc3089b1ed6a7544eb5cc5f91ae8dc1390688ffe10ad9aff1df224a5cd936276440ee95cb4afcaec7cf4f63332297864179c3266560dfb
SSDEEP

384:EB+Sbj6NKIPw6LZhAHt2vTh34EnWb5j4kDhlzCTJEUmNYEYQro3lcOjsjr:CpI46Lnwt4aE+RHtN8oj

Score

10^/10

limerat xmrig discovery miner rat upx

Malware Config

Extracted

Family

limerat

Attributes

aes_key
1337
antivm
false
c2_url
https://pastebin.com/raw/rACMKa5f
delay
3
download_payload
false
install
true
install_name
xdwd.exe
main_folder
AppData
pin_spread
false
sub_folder
\xdwd\
usb_spread
true

Signatures

LimeRAT
Simple yet powerful RAT for Windows machines written in .NET.
rat limerat
Limerat family
limerat
Xmrig family
xmrig
xmrig
XMRig is a high performance, open source, cross platform CPU/GPU miner.
miner xmrig

XMRig Miner payload 1 IoCs

miner

resource	yara_rule
behavioral1/memory/2328-31-0x0000000000400000-0x0000000000586000-memory.dmp	xmrig

Executes dropped EXE 1 IoCs

pid	Process
3032	xdwd.exe

Loads dropped DLL 2 IoCs

pid	Process
2172	xdwd.exe
2172	xdwd.exe

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

Web Service

T1102

flow	ioc
2	pastebin.com
3	pastebin.com

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2328-29-0x0000000000400000-0x0000000000586000-memory.dmp	upx
behavioral1/memory/2328-30-0x0000000000400000-0x0000000000586000-memory.dmp	upx
behavioral1/memory/2328-28-0x0000000000400000-0x0000000000586000-memory.dmp	upx
behavioral1/memory/2328-31-0x0000000000400000-0x0000000000586000-memory.dmp	upx
behavioral1/memory/2328-23-0x0000000000400000-0x0000000000586000-memory.dmp	upx
behavioral1/memory/2328-25-0x0000000000400000-0x0000000000586000-memory.dmp	upx

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 3 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	xdwd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xdwd.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
3020	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3032	xdwd.exe
Token: SeDebugPrivilege	3032	xdwd.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2172 wrote to memory of 3020	2172	xdwd.exe	30
PID 2172 wrote to memory of 3020	2172	xdwd.exe	30
PID 2172 wrote to memory of 3020	2172	xdwd.exe	30
PID 2172 wrote to memory of 3020	2172	xdwd.exe	30
PID 2172 wrote to memory of 3032	2172	xdwd.exe	32
PID 2172 wrote to memory of 3032	2172	xdwd.exe	32
PID 2172 wrote to memory of 3032	2172	xdwd.exe	32
PID 2172 wrote to memory of 3032	2172	xdwd.exe	32

C:\Users\Admin\AppData\Local\Temp\xdwd.exe
"C:\Users\Admin\AppData\Local\Temp\xdwd.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2172
- C:\Windows\SysWOW64\schtasks.exe
  schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\AppData\Roaming\xdwd\xdwd.exe'"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3020
- C:\Users\Admin\AppData\Roaming\xdwd\xdwd.exe
  "C:\Users\Admin\AppData\Roaming\xdwd\xdwd.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:3032
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\Regasm.exe
    "C:\Windows\Microsoft.NET\Framework\v2.0.50727\Regasm.exe" -B --donate-level=0 -t 8 -a cryptonight --url= -u -p -R --variant=-1 --max-cpu-usage=90
    3⤵
    PID:2328

Network

DNS

pastebin.com

Remote address:

8.8.8.8:53

Request

pastebin.com

IN A

Response

pastebin.com

IN A

104.20.3.235

pastebin.com

IN A

172.67.19.24

pastebin.com

IN A

104.20.4.235

104.20.3.235:443

pastebin.com

tls

799 B
5.4kB
10
10
89.23.100.155:1337

19.0kB
985.3kB
390
725

8.8.8.8:53

pastebin.com

dns

58 B
106 B
1
1

DNS Request

pastebin.com

DNS Response

104.20.3.235

172.67.19.24

104.20.4.235

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Roaming\xdwd\xdwd.exe

Filesize
25KB

MD5
aae04417cc07c39988d4fbe0e85fc9bd

SHA1
2d51b49f8f1faeba674dd0993911e8f65b4d2258

SHA256
f81bc717944ec8a599c8276d9d3b1de4b995d5570139590d263b39e47e87ba3d

SHA512
53cc6468da9be1f4a3cc3089b1ed6a7544eb5cc5f91ae8dc1390688ffe10ad9aff1df224a5cd936276440ee95cb4afcaec7cf4f63332297864179c3266560dfb

Download Submit
memory/2172-15-0x0000000074300000-0x00000000749EE000-memory.dmp

Filesize
6.9MB

Download
memory/2172-1-0x0000000000160000-0x000000000016C000-memory.dmp

Filesize
48KB

Download
memory/2172-11-0x0000000074300000-0x00000000749EE000-memory.dmp

Filesize
6.9MB

Download
memory/2172-0-0x000000007430E000-0x000000007430F000-memory.dmp

Filesize
4KB

Download
memory/2328-28-0x0000000000400000-0x0000000000586000-memory.dmp

Filesize
1.5MB

Download
memory/2328-29-0x0000000000400000-0x0000000000586000-memory.dmp

Filesize
1.5MB

Download
memory/2328-21-0x0000000000400000-0x0000000000586000-memory.dmp

Filesize
1.5MB

Download
memory/2328-25-0x0000000000400000-0x0000000000586000-memory.dmp

Filesize
1.5MB

Download
memory/2328-23-0x0000000000400000-0x0000000000586000-memory.dmp

Filesize
1.5MB

Download
memory/2328-31-0x0000000000400000-0x0000000000586000-memory.dmp

Filesize
1.5MB

Download
memory/2328-30-0x0000000000400000-0x0000000000586000-memory.dmp

Filesize
1.5MB

Download
memory/2328-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3032-18-0x0000000074300000-0x00000000749EE000-memory.dmp

Filesize
6.9MB

Download
memory/3032-20-0x0000000005870000-0x00000000058EE000-memory.dmp

Filesize
504KB

Download
memory/3032-13-0x0000000074300000-0x00000000749EE000-memory.dmp

Filesize
6.9MB

Download
memory/3032-19-0x0000000000740000-0x000000000074C000-memory.dmp

Filesize
48KB

Download
memory/3032-14-0x0000000000EC0000-0x0000000000ECC000-memory.dmp

Filesize
48KB

Download
memory/3032-17-0x0000000074300000-0x00000000749EE000-memory.dmp

Filesize
6.9MB

Download
memory/3032-16-0x0000000074300000-0x00000000749EE000-memory.dmp

Filesize
6.9MB

Download
memory/3032-32-0x0000000000BC0000-0x0000000000BDE000-memory.dmp

Filesize
120KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

DNS Request

DNS Response

MITRE ATT&CK Enterprise v15

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