asyncrat | 290ed573c3be19bb9f7a4503d9ce1cc95d33191c6078d127cceabd63a7e98a3b

General

Target

Xeron_Scan17022020.exe
Size

380KB
MD5

a52d0c834a09cc7efdfe374ee2f4f90e
SHA1

5957da57c40aef542a52d07df04501f74b631bdb
SHA256

aaf00e1348307208d3415f629193cdf125171170a32a8cdeb140e8373d079714
SHA512

e99e1429dcac7398473cecb4a63cce2ac1b0bccb2f4dd284e38c1ca16dac21d0d6552c886604c87fe79590274ea821734faf874639f873883a75e0d4d5a247e8
SSDEEP

6144:hBUl1fcf0Tv2sbP6mSPmFFLmlrqQroarJ0zUWZyzhX:Q79vnz6mSQYxkarJaZyzh

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

severdops.ddns.net:6204

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

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-1-5-21-3419463127-3903270268-2580331543-1000\Control Panel\International\Geo\Nation	Xeron_Scan17022020.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1648 set thread context of 620	1648	Xeron_Scan17022020.exe	101

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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
3992	schtasks.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1648 wrote to memory of 3992	1648	Xeron_Scan17022020.exe	99
PID 1648 wrote to memory of 3992	1648	Xeron_Scan17022020.exe	99
PID 1648 wrote to memory of 3992	1648	Xeron_Scan17022020.exe	99
PID 1648 wrote to memory of 620	1648	Xeron_Scan17022020.exe	101
PID 1648 wrote to memory of 620	1648	Xeron_Scan17022020.exe	101
PID 1648 wrote to memory of 620	1648	Xeron_Scan17022020.exe	101
PID 1648 wrote to memory of 620	1648	Xeron_Scan17022020.exe	101
PID 1648 wrote to memory of 620	1648	Xeron_Scan17022020.exe	101
PID 1648 wrote to memory of 620	1648	Xeron_Scan17022020.exe	101
PID 1648 wrote to memory of 620	1648	Xeron_Scan17022020.exe	101
PID 1648 wrote to memory of 620	1648	Xeron_Scan17022020.exe	101

C:\Users\Admin\AppData\Local\Temp\Xeron_Scan17022020.exe
"C:\Users\Admin\AppData\Local\Temp\Xeron_Scan17022020.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1648
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\eKLGqzBRYkTEB" /XML "C:\Users\Admin\AppData\Local\Temp\tmp16.tmp"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3992
- C:\Users\Admin\AppData\Local\Temp\Xeron_Scan17022020.exe
  "C:\Users\Admin\AppData\Local\Temp\Xeron_Scan17022020.exe"
  2⤵
  PID:620

Network

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Xeron_Scan17022020.exe.log

Filesize
1KB

MD5
17573558c4e714f606f997e5157afaac

SHA1
13e16e9415ceef429aaf124139671ebeca09ed23

SHA256
c18db6aecad2436da4a63ff26af4e3a337cca48f01c21b8db494fe5ccc60e553

SHA512
f4edf13f05a0d142e4dd42802098c8c44988ee8869621a62c2b565a77c9a95857f636583ff8d6d9baa366603d98b9bfbf1fc75bc6f9f8f83c80cb1215b2941cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp16.tmp

Filesize
1KB

MD5
9dbf09f61de2c2767bfd8269f0889dab

SHA1
573b453c2b9d7ee6520253bfa04823719bc2b01d

SHA256
b976e7c6e55720d5b5f581b3a3f14c7a5cbc0d9abc9203919f837936aa5d3c91

SHA512
1f49451a3a857403c1a178b2d54a2849dc5d106b55e2996ab7510f31f4345937ea6c35b5cc521570d60438148fca3ba9c79c2c27da9a7f4fee5785eec67d3e1e

Download Submit
memory/620-23-0x0000000074EB0000-0x0000000075660000-memory.dmp

Filesize
7.7MB

Download
memory/620-22-0x0000000074EB0000-0x0000000075660000-memory.dmp

Filesize
7.7MB

Download
memory/620-20-0x0000000074EB0000-0x0000000075660000-memory.dmp

Filesize
7.7MB

Download
memory/620-17-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1648-4-0x00000000057B0000-0x0000000005842000-memory.dmp

Filesize
584KB

Download
memory/1648-7-0x0000000074EB0000-0x0000000075660000-memory.dmp

Filesize
7.7MB

Download
memory/1648-8-0x0000000005BE0000-0x0000000005BEA000-memory.dmp

Filesize
40KB

Download
memory/1648-9-0x0000000074EBE000-0x0000000074EBF000-memory.dmp

Filesize
4KB

Download
memory/1648-10-0x0000000074EB0000-0x0000000075660000-memory.dmp

Filesize
7.7MB

Download
memory/1648-11-0x00000000011C0000-0x0000000001200000-memory.dmp

Filesize
256KB

Download
memory/1648-6-0x00000000059C0000-0x0000000005A16000-memory.dmp

Filesize
344KB

Download
memory/1648-5-0x0000000005700000-0x000000000570A000-memory.dmp

Filesize
40KB

Download
memory/1648-0-0x0000000074EBE000-0x0000000074EBF000-memory.dmp

Filesize
4KB

Download
memory/1648-3-0x0000000005D60000-0x0000000006304000-memory.dmp

Filesize
5.6MB

Download
memory/1648-21-0x0000000074EB0000-0x0000000075660000-memory.dmp

Filesize
7.7MB

Download
memory/1648-2-0x0000000005710000-0x00000000057AC000-memory.dmp

Filesize
624KB

Download
memory/1648-1-0x0000000000CD0000-0x0000000000D34000-memory.dmp

Filesize
400KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads