asyncrat | 747957c357cf6fbb4507831926d64211bcea32f767e4262efe275bba99154089

Analysis

max time kernel
450s
max time network
1191s
platform
windows11-21h2_x64
resource
win11-20240419-en
resource tags

arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
submitted
03-05-2024 01:36

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

a ton of cumme/cumme - Copy (10).exe
Size

63KB
MD5

76034e5a2c3a49ec8232f011d5572d84
SHA1

9dae727f33662a0411fb0f49a51c845fddbb5b98
SHA256

390f2329d720595861f5bc5bf65cccdd0a76639197f15fb1529e66736a6f6a41
SHA512

df4a742d9f5da89888a154f4eef3964bf5574f4d679088aa03fc58e8309f06ea942ea291fa2acd87e92c922c59845c1b695d9dd736e3f7b99316c08dd6968a1d
SSDEEP

1536:AqTQa7NVNPHYUYUbzh97IBfusdpqKmY7:A5ANVHYUbz3kJGz

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

other-fellow.gl.at.ply.gg:42571

Attributes

delay
1
install
true
install_file
cumme.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/0x001b00000002aae3-11.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
5040	cumme.exe

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
4216	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4228	timeout.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
1528	cumme - Copy (10).exe
1528	cumme - Copy (10).exe
1528	cumme - Copy (10).exe
1528	cumme - Copy (10).exe
1528	cumme - Copy (10).exe
1528	cumme - Copy (10).exe
1528	cumme - Copy (10).exe
1528	cumme - Copy (10).exe
1528	cumme - Copy (10).exe
1528	cumme - Copy (10).exe
1528	cumme - Copy (10).exe
1528	cumme - Copy (10).exe
1528	cumme - Copy (10).exe
1528	cumme - Copy (10).exe
1528	cumme - Copy (10).exe
1528	cumme - Copy (10).exe
1528	cumme - Copy (10).exe
1528	cumme - Copy (10).exe
1528	cumme - Copy (10).exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1528	cumme - Copy (10).exe
Token: SeDebugPrivilege	5040	cumme.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1528 wrote to memory of 1068	1528	cumme - Copy (10).exe	81
PID 1528 wrote to memory of 1068	1528	cumme - Copy (10).exe	81
PID 1528 wrote to memory of 4116	1528	cumme - Copy (10).exe	83
PID 1528 wrote to memory of 4116	1528	cumme - Copy (10).exe	83
PID 1068 wrote to memory of 4216	1068	cmd.exe	85
PID 1068 wrote to memory of 4216	1068	cmd.exe	85
PID 4116 wrote to memory of 4228	4116	cmd.exe	86
PID 4116 wrote to memory of 4228	4116	cmd.exe	86
PID 4116 wrote to memory of 5040	4116	cmd.exe	87
PID 4116 wrote to memory of 5040	4116	cmd.exe	87

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\a ton of cumme\cumme - Copy (10).exe
"C:\Users\Admin\AppData\Local\Temp\a ton of cumme\cumme - Copy (10).exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1528
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "cumme" /tr '"C:\Users\Admin\AppData\Roaming\cumme.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1068
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "cumme" /tr '"C:\Users\Admin\AppData\Roaming\cumme.exe"'
    3⤵
    - Creates scheduled task(s)
    PID:4216
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp45E2.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4116
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:4228
- - C:\Users\Admin\AppData\Roaming\cumme.exe
    "C:\Users\Admin\AppData\Roaming\cumme.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:5040

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp45E2.tmp.bat

Filesize
149B

MD5
5b17a754c8b9519461df025e7a5d50f3

SHA1
de955877916a87f599b69c03595e581b401aefb9

SHA256
f45a422a67bc3c1af23b20f63595922607b4f7cacba4b33f86652a234cfebbd1

SHA512
9a72d1332bd362113595b4c30504d620662d9f9bc8d64942be0ab9a2d9be5c930b78d583fcf67c014fcd3962fefcbf76ce225d65747f9808e60e688f2a399e8e

Download Submit
C:\Users\Admin\AppData\Roaming\cumme.exe

Filesize
63KB

MD5
76034e5a2c3a49ec8232f011d5572d84

SHA1
9dae727f33662a0411fb0f49a51c845fddbb5b98

SHA256
390f2329d720595861f5bc5bf65cccdd0a76639197f15fb1529e66736a6f6a41

SHA512
df4a742d9f5da89888a154f4eef3964bf5574f4d679088aa03fc58e8309f06ea942ea291fa2acd87e92c922c59845c1b695d9dd736e3f7b99316c08dd6968a1d

Download Submit
memory/1528-0-0x0000000000700000-0x0000000000716000-memory.dmp

Filesize
88KB

Download
memory/1528-1-0x00007FFEAC353000-0x00007FFEAC355000-memory.dmp

Filesize
8KB

Download
memory/1528-2-0x00007FFEAC350000-0x00007FFEACE12000-memory.dmp

Filesize
10.8MB

Download
memory/1528-3-0x00007FFEAC350000-0x00007FFEACE12000-memory.dmp

Filesize
10.8MB

Download
memory/1528-8-0x00007FFEAC350000-0x00007FFEACE12000-memory.dmp

Filesize
10.8MB

Download