asyncrat | 755b652523d03387343a68bfd7bbcad75e93bbe668aadedae927ab1980a05d0a

General

Target

755b652523d03387343a68bfd7bbcad75e93bbe668aadedae927ab1980a05d0a.exe
Size

859KB
MD5

19c25248c2ebe60a5da4ac7ce7c5eda8
SHA1

d7eb8a9c151f1d3488a1fa4e271e00912c98a0c9
SHA256

755b652523d03387343a68bfd7bbcad75e93bbe668aadedae927ab1980a05d0a
SHA512

3bdfc6e0cb33ff6858abfd945c374a48a66b14f0d2e2530e7a6ee2f7e7969aaac80f0fb5b768310844d70f79d2c9c6234e5731c489301b6272e4ad1624baad02
SSDEEP

12288:b5+N/wAkwJHS2fPehzY2ScrfM/40yb/bzbiLTcRfVtZ2mE+92Wl7u16wI3arYx:lY2wkacr0/40yb/UG7r2+u16V3a8

Score

10^/10

asyncrat connector discovery rat

Malware Config

Extracted

Family

asyncrat

Version

AWS | RxR

Botnet

Connector

C2

51.38.109.144:6606

51.38.109.144:7707

51.38.109.144:8808

Mutex

AsyncMutex_VConnector

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
Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059
Suspicious use of SetThreadContext 1 IoCs

Processes:

755b652523d03387343a68bfd7bbcad75e93bbe668aadedae927ab1980a05d0a.exe

description pid process target process

PID 2260 set thread context of 884 2260 755b652523d03387343a68bfd7bbcad75e93bbe668aadedae927ab1980a05d0a.exe vbc.exe

description	pid	process	target process
PID 2260 set thread context of 884	2260	755b652523d03387343a68bfd7bbcad75e93bbe668aadedae927ab1980a05d0a.exe	vbc.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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

Processes:

755b652523d03387343a68bfd7bbcad75e93bbe668aadedae927ab1980a05d0a.exevbc.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	755b652523d03387343a68bfd7bbcad75e93bbe668aadedae927ab1980a05d0a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

755b652523d03387343a68bfd7bbcad75e93bbe668aadedae927ab1980a05d0a.exevbc.exe

pid	process
2260	755b652523d03387343a68bfd7bbcad75e93bbe668aadedae927ab1980a05d0a.exe
2260	755b652523d03387343a68bfd7bbcad75e93bbe668aadedae927ab1980a05d0a.exe
2260	755b652523d03387343a68bfd7bbcad75e93bbe668aadedae927ab1980a05d0a.exe
884	vbc.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

755b652523d03387343a68bfd7bbcad75e93bbe668aadedae927ab1980a05d0a.exevbc.exe

description	pid	process
Token: SeDebugPrivilege	2260	755b652523d03387343a68bfd7bbcad75e93bbe668aadedae927ab1980a05d0a.exe
Token: SeDebugPrivilege	884	vbc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

vbc.exe

pid process

884 vbc.exe

pid	process
884	vbc.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

755b652523d03387343a68bfd7bbcad75e93bbe668aadedae927ab1980a05d0a.exe

description	pid	process	target process
PID 2260 wrote to memory of 884	2260	755b652523d03387343a68bfd7bbcad75e93bbe668aadedae927ab1980a05d0a.exe	vbc.exe
PID 2260 wrote to memory of 884	2260	755b652523d03387343a68bfd7bbcad75e93bbe668aadedae927ab1980a05d0a.exe	vbc.exe
PID 2260 wrote to memory of 884	2260	755b652523d03387343a68bfd7bbcad75e93bbe668aadedae927ab1980a05d0a.exe	vbc.exe
PID 2260 wrote to memory of 884	2260	755b652523d03387343a68bfd7bbcad75e93bbe668aadedae927ab1980a05d0a.exe	vbc.exe
PID 2260 wrote to memory of 884	2260	755b652523d03387343a68bfd7bbcad75e93bbe668aadedae927ab1980a05d0a.exe	vbc.exe
PID 2260 wrote to memory of 884	2260	755b652523d03387343a68bfd7bbcad75e93bbe668aadedae927ab1980a05d0a.exe	vbc.exe
PID 2260 wrote to memory of 884	2260	755b652523d03387343a68bfd7bbcad75e93bbe668aadedae927ab1980a05d0a.exe	vbc.exe
PID 2260 wrote to memory of 884	2260	755b652523d03387343a68bfd7bbcad75e93bbe668aadedae927ab1980a05d0a.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\755b652523d03387343a68bfd7bbcad75e93bbe668aadedae927ab1980a05d0a.exe
"C:\Users\Admin\AppData\Local\Temp\755b652523d03387343a68bfd7bbcad75e93bbe668aadedae927ab1980a05d0a.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2260

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
2⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:884

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/884-13-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/884-20-0x00000000748E0000-0x0000000075090000-memory.dmp

Filesize
7.7MB

Download
memory/884-19-0x00000000748E0000-0x0000000075090000-memory.dmp

Filesize
7.7MB

Download
memory/884-18-0x0000000006430000-0x0000000006496000-memory.dmp

Filesize
408KB

Download
memory/884-17-0x00000000748E0000-0x0000000075090000-memory.dmp

Filesize
7.7MB

Download
memory/884-16-0x00000000748E0000-0x0000000075090000-memory.dmp

Filesize
7.7MB

Download
memory/2260-10-0x00000000748E0000-0x0000000075090000-memory.dmp

Filesize
7.7MB

Download
memory/2260-6-0x0000000005780000-0x0000000005812000-memory.dmp

Filesize
584KB

Download
memory/2260-8-0x00000000748E0000-0x0000000075090000-memory.dmp

Filesize
7.7MB

Download
memory/2260-9-0x00000000748EE000-0x00000000748EF000-memory.dmp

Filesize
4KB

Download
memory/2260-0-0x00000000748EE000-0x00000000748EF000-memory.dmp

Filesize
4KB

Download
memory/2260-11-0x0000000005B80000-0x0000000005B9A000-memory.dmp

Filesize
104KB

Download
memory/2260-12-0x0000000009A20000-0x0000000009A26000-memory.dmp

Filesize
24KB

Download
memory/2260-7-0x0000000005760000-0x000000000576A000-memory.dmp

Filesize
40KB

Download
memory/2260-5-0x0000000005C50000-0x00000000061F4000-memory.dmp

Filesize
5.6MB

Download
memory/2260-15-0x00000000748E0000-0x0000000075090000-memory.dmp

Filesize
7.7MB

Download
memory/2260-4-0x00000000054E0000-0x000000000557E000-memory.dmp

Filesize
632KB

Download
memory/2260-3-0x00000000748E0000-0x0000000075090000-memory.dmp

Filesize
7.7MB

Download
memory/2260-2-0x0000000005440000-0x00000000054DC000-memory.dmp

Filesize
624KB

Download
memory/2260-1-0x0000000000BF0000-0x0000000000CCE000-memory.dmp

Filesize
888KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads