asyncrat | d7bfea7d65bd99597f52daaf771da4b372cd9426a6b082d3917f4b90a5294411

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04/11/2024, 07:51

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General

Target

77D62A0F656D79E0FF5BB2F70E4E852C.exe
Size

487KB
MD5

77d62a0f656d79e0ff5bb2f70e4e852c
SHA1

c85bde83456a07b3797aa6f290f71c8ff715a598
SHA256

d7bfea7d65bd99597f52daaf771da4b372cd9426a6b082d3917f4b90a5294411
SHA512

b503be45cc8d524d9f929aae53bc0a46e991c8db94503da64d3dfc1b1eaf7378c068da0156436fb865ad36016e957c7416a2e87bee3d1bb644e5c481a40bd645
SSDEEP

12288:ctaDPw1Qk89TmyVryOUfR3rA9WgCqo3yrWE3I7Oqa8bfWT:c0Lw9gTFVryb3rkVCV+WE3FZ8bfW

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

127.0.0.1:1960

cuit.ydns.eu:1960

Mutex

Ym9duGjX2Yzz

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
Asyncrat family
asyncrat

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1924 set thread context of 2072	1924	77D62A0F656D79E0FF5BB2F70E4E852C.exe	95

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	77D62A0F656D79E0FF5BB2F70E4E852C.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	77D62A0F656D79E0FF5BB2F70E4E852C.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1924	77D62A0F656D79E0FF5BB2F70E4E852C.exe
1924	77D62A0F656D79E0FF5BB2F70E4E852C.exe
1924	77D62A0F656D79E0FF5BB2F70E4E852C.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1924	77D62A0F656D79E0FF5BB2F70E4E852C.exe
Token: SeDebugPrivilege	2072	77D62A0F656D79E0FF5BB2F70E4E852C.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1924 wrote to memory of 2072	1924	77D62A0F656D79E0FF5BB2F70E4E852C.exe	95
PID 1924 wrote to memory of 2072	1924	77D62A0F656D79E0FF5BB2F70E4E852C.exe	95
PID 1924 wrote to memory of 2072	1924	77D62A0F656D79E0FF5BB2F70E4E852C.exe	95
PID 1924 wrote to memory of 2072	1924	77D62A0F656D79E0FF5BB2F70E4E852C.exe	95
PID 1924 wrote to memory of 2072	1924	77D62A0F656D79E0FF5BB2F70E4E852C.exe	95
PID 1924 wrote to memory of 2072	1924	77D62A0F656D79E0FF5BB2F70E4E852C.exe	95
PID 1924 wrote to memory of 2072	1924	77D62A0F656D79E0FF5BB2F70E4E852C.exe	95
PID 1924 wrote to memory of 2072	1924	77D62A0F656D79E0FF5BB2F70E4E852C.exe	95

C:\Users\Admin\AppData\Local\Temp\77D62A0F656D79E0FF5BB2F70E4E852C.exe
"C:\Users\Admin\AppData\Local\Temp\77D62A0F656D79E0FF5BB2F70E4E852C.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1924
- C:\Users\Admin\AppData\Local\Temp\77D62A0F656D79E0FF5BB2F70E4E852C.exe
  "C:\Users\Admin\AppData\Local\Temp\77D62A0F656D79E0FF5BB2F70E4E852C.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2072

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\77D62A0F656D79E0FF5BB2F70E4E852C.exe.log

Filesize
1KB

MD5
8ec831f3e3a3f77e4a7b9cd32b48384c

SHA1
d83f09fd87c5bd86e045873c231c14836e76a05c

SHA256
7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

SHA512
26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

Download Submit
memory/1924-4-0x00000000050C0000-0x00000000050CA000-memory.dmp

Filesize
40KB

Download
memory/1924-15-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/1924-3-0x0000000005110000-0x00000000051A2000-memory.dmp

Filesize
584KB

Download
memory/1924-0-0x000000007464E000-0x000000007464F000-memory.dmp

Filesize
4KB

Download
memory/1924-5-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/1924-6-0x00000000053C0000-0x000000000545C000-memory.dmp

Filesize
624KB

Download
memory/1924-7-0x00000000055F0000-0x000000000560E000-memory.dmp

Filesize
120KB

Download
memory/1924-8-0x000000007464E000-0x000000007464F000-memory.dmp

Filesize
4KB

Download
memory/1924-2-0x00000000056C0000-0x0000000005C64000-memory.dmp

Filesize
5.6MB

Download
memory/1924-9-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/1924-10-0x00000000028F0000-0x0000000002944000-memory.dmp

Filesize
336KB

Download
memory/1924-1-0x0000000000650000-0x00000000006D0000-memory.dmp

Filesize
512KB

Download
memory/2072-14-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/2072-11-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2072-16-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/2072-17-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/2072-18-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/2072-21-0x0000000005C90000-0x0000000005CF6000-memory.dmp

Filesize
408KB

Download