asyncrat | 36af16f1951a6edc1cbcd5a15c4bc1a68b2ce829a632e5ff2f37cf2167eac659

Analysis

max time kernel
147s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
09-08-2024 11:30

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General

Target

De4dot [Modded ArmDot]/de4dot -64.exe
Size

864KB
MD5

5adaa98a0b8e6411899f38807992afc6
SHA1

286990f8674e0369a9c27f4ffc346383c5c4b03e
SHA256

956a589c4da96ec8386890e9500918dfbfbab1caaae0adc0b9366fa25dc46e52
SHA512

700be06def67aa38426cef84d1394f2eb6b30a198857f48df0d6449e85251ee8af764f2574c66e769980275613738056c68c4dfbd0bd74dc255e5dd90254fff6
SSDEEP

24576:H/1vb3S3HSpqUXw/bD/ZOGsoXio18NwV+Zg:JiHaIg/obVYg

Score

10^/10

asyncrat d4dot rat

Malware Config

Extracted

Family

asyncrat

Version

5.0.5

Botnet

D4Dot

154.61.75.91:4449

Attributes

delay
1
install
true
install_file
D4dot.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 2 IoCs

rat

resource	yara_rule
behavioral16/memory/3636-2-0x0000000001290000-0x00000000012D2000-memory.dmp	family_asyncrat
behavioral16/memory/4420-13-0x0000000002550000-0x0000000002592000-memory.dmp	family_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-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	de4dot -64.exe

Executes dropped EXE 1 IoCs

pid	Process
4420	D4dot.exe

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

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4816	timeout.exe

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
1060	schtasks.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
3636	de4dot -64.exe
3636	de4dot -64.exe
3636	de4dot -64.exe
3636	de4dot -64.exe
3636	de4dot -64.exe
3636	de4dot -64.exe
3636	de4dot -64.exe
3636	de4dot -64.exe
3636	de4dot -64.exe
3636	de4dot -64.exe
3636	de4dot -64.exe
3636	de4dot -64.exe
3636	de4dot -64.exe
3636	de4dot -64.exe
3636	de4dot -64.exe
3636	de4dot -64.exe
3636	de4dot -64.exe
3636	de4dot -64.exe
3636	de4dot -64.exe
3636	de4dot -64.exe
3636	de4dot -64.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3636	de4dot -64.exe
Token: SeDebugPrivilege	4420	D4dot.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3636 wrote to memory of 4284	3636	de4dot -64.exe	86
PID 3636 wrote to memory of 4284	3636	de4dot -64.exe	86
PID 3636 wrote to memory of 1692	3636	de4dot -64.exe	88
PID 3636 wrote to memory of 1692	3636	de4dot -64.exe	88
PID 4284 wrote to memory of 1060	4284	cmd.exe	90
PID 4284 wrote to memory of 1060	4284	cmd.exe	90
PID 1692 wrote to memory of 4816	1692	cmd.exe	91
PID 1692 wrote to memory of 4816	1692	cmd.exe	91
PID 1692 wrote to memory of 4420	1692	cmd.exe	92
PID 1692 wrote to memory of 4420	1692	cmd.exe	92

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\De4dot [Modded ArmDot]\de4dot -64.exe
"C:\Users\Admin\AppData\Local\Temp\De4dot [Modded ArmDot]\de4dot -64.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3636
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "D4dot" /tr '"C:\Users\Admin\AppData\Roaming\D4dot.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4284
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "D4dot" /tr '"C:\Users\Admin\AppData\Roaming\D4dot.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1060
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp80E8.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1692
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:4816
- - C:\Users\Admin\AppData\Roaming\D4dot.exe
    "C:\Users\Admin\AppData\Roaming\D4dot.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:4420

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp80E8.tmp.bat

Filesize
149B

MD5
bde2ba54d47f1eccd1333c3b5f3558d5

SHA1
1c31d9d9835c8f09cdaa9fa6f537f5576e54cfb9

SHA256
032165370c2a9c27f3aebbcaf835a25b058cd4c1e3d32f5b8b06c1a04e72ab52

SHA512
e26fd34eb9f82d40a028af125a7b90dbdc37ffc2f4e3547af51569f47fb3bd4518955c4426f3b359c1b2248492018e13aa1604c2bf98c5d1675896055851ca40

Download Submit
C:\Users\Admin\AppData\Roaming\D4dot.exe

Filesize
864KB

MD5
5adaa98a0b8e6411899f38807992afc6

SHA1
286990f8674e0369a9c27f4ffc346383c5c4b03e

SHA256
956a589c4da96ec8386890e9500918dfbfbab1caaae0adc0b9366fa25dc46e52

SHA512
700be06def67aa38426cef84d1394f2eb6b30a198857f48df0d6449e85251ee8af764f2574c66e769980275613738056c68c4dfbd0bd74dc255e5dd90254fff6

Download Submit
memory/3636-0-0x00007FFE0BE23000-0x00007FFE0BE25000-memory.dmp

Filesize
8KB

Download
memory/3636-1-0x0000000000A00000-0x0000000000ADE000-memory.dmp

Filesize
888KB

Download
memory/3636-2-0x0000000001290000-0x00000000012D2000-memory.dmp

Filesize
264KB

Download
memory/3636-3-0x00007FFE0BE20000-0x00007FFE0C8E1000-memory.dmp

Filesize
10.8MB

Download
memory/3636-8-0x00007FFE0BE20000-0x00007FFE0C8E1000-memory.dmp

Filesize
10.8MB

Download
memory/4420-13-0x0000000002550000-0x0000000002592000-memory.dmp

Filesize
264KB

Download