asyncrat | a9943104ff50fc79bf86d3fd41389bd395f871b7bb2b413a1ac628a9b679fcad

General

Target

a9943104ff50fc79bf86d3fd41389bd395f871b7bb2b413a1ac628a9b679fcad.exe
Size

47KB
MD5

0c35e8c36f627e8801c85a26d7e63b2b
SHA1

9d0d43a793ba17b89d9af95d48c30f5c6757288e
SHA256

a9943104ff50fc79bf86d3fd41389bd395f871b7bb2b413a1ac628a9b679fcad
SHA512

fc7e01c70faa4ec8425456bd2357f288bcd39d65e090423e7aea407de008c56bcb7812cefc5f476680fb57616641bb02ac21b1caf72b264d73b04e21c5ed77ac
SSDEEP

768:MukjVT0kLd3WULVPdVmo2qDNg8YwBTNNMPI4TGKXCp5/0b6rwxE1+LimhQ5JBDZ2:MukjVT0M912zwBXx4iEZb6ru7icsd0x

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

4.tcp.eu.ngrok.io:4040

4.tcp.eu.ngrok.io:120

4.tcp.eu.ngrok.io:14232

Mutex

AWCmV7whrG8q

Attributes

delay
3
install
true
install_file
sellam.exe
install_folder
%AppData%

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x000a000000012236-13.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2656	sellam.exe

Loads dropped DLL 1 IoCs

pid	Process
2568	cmd.exe

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

Web Service

T1102

flow	ioc
2	4.tcp.eu.ngrok.io
8	4.tcp.eu.ngrok.io

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

pid	Process
2508	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2200	timeout.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1724	a9943104ff50fc79bf86d3fd41389bd395f871b7bb2b413a1ac628a9b679fcad.exe
1724	a9943104ff50fc79bf86d3fd41389bd395f871b7bb2b413a1ac628a9b679fcad.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1724	a9943104ff50fc79bf86d3fd41389bd395f871b7bb2b413a1ac628a9b679fcad.exe
Token: SeDebugPrivilege	2656	sellam.exe
Token: SeDebugPrivilege	2656	sellam.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1724 wrote to memory of 2976	1724	a9943104ff50fc79bf86d3fd41389bd395f871b7bb2b413a1ac628a9b679fcad.exe	28
PID 1724 wrote to memory of 2976	1724	a9943104ff50fc79bf86d3fd41389bd395f871b7bb2b413a1ac628a9b679fcad.exe	28
PID 1724 wrote to memory of 2976	1724	a9943104ff50fc79bf86d3fd41389bd395f871b7bb2b413a1ac628a9b679fcad.exe	28
PID 1724 wrote to memory of 2976	1724	a9943104ff50fc79bf86d3fd41389bd395f871b7bb2b413a1ac628a9b679fcad.exe	28
PID 1724 wrote to memory of 2568	1724	a9943104ff50fc79bf86d3fd41389bd395f871b7bb2b413a1ac628a9b679fcad.exe	30
PID 1724 wrote to memory of 2568	1724	a9943104ff50fc79bf86d3fd41389bd395f871b7bb2b413a1ac628a9b679fcad.exe	30
PID 1724 wrote to memory of 2568	1724	a9943104ff50fc79bf86d3fd41389bd395f871b7bb2b413a1ac628a9b679fcad.exe	30
PID 1724 wrote to memory of 2568	1724	a9943104ff50fc79bf86d3fd41389bd395f871b7bb2b413a1ac628a9b679fcad.exe	30
PID 2976 wrote to memory of 2508	2976	cmd.exe	32
PID 2976 wrote to memory of 2508	2976	cmd.exe	32
PID 2976 wrote to memory of 2508	2976	cmd.exe	32
PID 2976 wrote to memory of 2508	2976	cmd.exe	32
PID 2568 wrote to memory of 2200	2568	cmd.exe	33
PID 2568 wrote to memory of 2200	2568	cmd.exe	33
PID 2568 wrote to memory of 2200	2568	cmd.exe	33
PID 2568 wrote to memory of 2200	2568	cmd.exe	33
PID 2568 wrote to memory of 2656	2568	cmd.exe	34
PID 2568 wrote to memory of 2656	2568	cmd.exe	34
PID 2568 wrote to memory of 2656	2568	cmd.exe	34
PID 2568 wrote to memory of 2656	2568	cmd.exe	34

C:\Users\Admin\AppData\Local\Temp\a9943104ff50fc79bf86d3fd41389bd395f871b7bb2b413a1ac628a9b679fcad.exe
"C:\Users\Admin\AppData\Local\Temp\a9943104ff50fc79bf86d3fd41389bd395f871b7bb2b413a1ac628a9b679fcad.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1724
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "sellam" /tr '"C:\Users\Admin\AppData\Roaming\sellam.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2976
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "sellam" /tr '"C:\Users\Admin\AppData\Roaming\sellam.exe"'
    3⤵
    - Creates scheduled task(s)
    PID:2508
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp27AC.tmp.bat""
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2568
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2200
- - C:\Users\Admin\AppData\Roaming\sellam.exe
    "C:\Users\Admin\AppData\Roaming\sellam.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2656

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp27AC.tmp.bat

Filesize
150B

MD5
88cc2e02d71a6d7e76bc4bbe84dcadb0

SHA1
d6c4f11f7b2cbbf053d2f1103b0e8c851253fa0a

SHA256
5a1741090313c85ad2c989211b7d31b27b3f3b9c227455114e59a09947cb4bf6

SHA512
a44e799ee923686f668c09ccc564cc3cb024d45073c01c8a2aebc882e9fca4b704ee7ca99fc2886eda7a833bc57a6cde8b092b450d68fe1a0380631fb64e8e3e

Download Submit
\Users\Admin\AppData\Roaming\sellam.exe

Filesize
47KB

MD5
0c35e8c36f627e8801c85a26d7e63b2b

SHA1
9d0d43a793ba17b89d9af95d48c30f5c6757288e

SHA256
a9943104ff50fc79bf86d3fd41389bd395f871b7bb2b413a1ac628a9b679fcad

SHA512
fc7e01c70faa4ec8425456bd2357f288bcd39d65e090423e7aea407de008c56bcb7812cefc5f476680fb57616641bb02ac21b1caf72b264d73b04e21c5ed77ac

Download Submit
memory/1724-0-0x0000000001260000-0x0000000001272000-memory.dmp

Filesize
72KB

Download
memory/1724-1-0x0000000074930000-0x000000007501E000-memory.dmp

Filesize
6.9MB

Download
memory/1724-2-0x0000000004DC0000-0x0000000004E00000-memory.dmp

Filesize
256KB

Download
memory/1724-12-0x0000000074930000-0x000000007501E000-memory.dmp

Filesize
6.9MB

Download
memory/2656-16-0x0000000000D50000-0x0000000000D62000-memory.dmp

Filesize
72KB

Download
memory/2656-17-0x00000000748E0000-0x0000000074FCE000-memory.dmp

Filesize
6.9MB

Download
memory/2656-18-0x0000000004D10000-0x0000000004D50000-memory.dmp

Filesize
256KB

Download
memory/2656-19-0x00000000748E0000-0x0000000074FCE000-memory.dmp

Filesize
6.9MB

Download
memory/2656-20-0x0000000004D10000-0x0000000004D50000-memory.dmp

Filesize
256KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads