asyncrat | 41d486ecbc7e076dc64d603fb09dbf0cff934c9816e427d16450aedf95672e9d

General

Target

41d486ecbc7e076dc64d603fb09dbf0cff934c9816e427d16450aedf95672e9d.exe
Size

47KB
MD5

90ef5e4f564a69f94e47955daecf5a7e
SHA1

8fd27d79d74a657fb6ecfcb0e1975f00a1cf417e
SHA256

41d486ecbc7e076dc64d603fb09dbf0cff934c9816e427d16450aedf95672e9d
SHA512

ad1e7b3c3776eae5448fe981520ca0c048000c13fd5c65d5c95dbd840ea56dfb8dbe164532fc9c013b96fd89ff3106170284de2ceb61c6907703299a5829365c
SSDEEP

768:h8IZILkWAA+jiFtelDSN+iV08YbygeYpgByFPvEgK/JLZVc6KN:h8YoFtKDs4zb15pgByFnkJLZVclN

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

159.146.103.132:5554

Mutex

mtx

Attributes

delay
1
install
true
install_file
winfile.exe
install_folder
%Temp%

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\winfile.exe	family_asyncrat

Executes dropped EXE 1 IoCs

Processes:

winfile.exe

pid process

2600 winfile.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

Processes:

timeout.exe

pid process

2868 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

Processes:

schtasks.exe

pid process

2740 schtasks.exe

pid	process
2600	winfile.exe

pid	process
2868	timeout.exe

pid	process
2740	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

41d486ecbc7e076dc64d603fb09dbf0cff934c9816e427d16450aedf95672e9d.exe

pid	process
2316	41d486ecbc7e076dc64d603fb09dbf0cff934c9816e427d16450aedf95672e9d.exe
2316	41d486ecbc7e076dc64d603fb09dbf0cff934c9816e427d16450aedf95672e9d.exe
2316	41d486ecbc7e076dc64d603fb09dbf0cff934c9816e427d16450aedf95672e9d.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

41d486ecbc7e076dc64d603fb09dbf0cff934c9816e427d16450aedf95672e9d.exewinfile.exe

description	pid	process
Token: SeDebugPrivilege	2316	41d486ecbc7e076dc64d603fb09dbf0cff934c9816e427d16450aedf95672e9d.exe
Token: SeDebugPrivilege	2600	winfile.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

41d486ecbc7e076dc64d603fb09dbf0cff934c9816e427d16450aedf95672e9d.execmd.execmd.exe

description	pid	process	target process
PID 2316 wrote to memory of 2820	2316	41d486ecbc7e076dc64d603fb09dbf0cff934c9816e427d16450aedf95672e9d.exe	cmd.exe
PID 2316 wrote to memory of 2820	2316	41d486ecbc7e076dc64d603fb09dbf0cff934c9816e427d16450aedf95672e9d.exe	cmd.exe
PID 2316 wrote to memory of 2820	2316	41d486ecbc7e076dc64d603fb09dbf0cff934c9816e427d16450aedf95672e9d.exe	cmd.exe
PID 2316 wrote to memory of 3000	2316	41d486ecbc7e076dc64d603fb09dbf0cff934c9816e427d16450aedf95672e9d.exe	cmd.exe
PID 2316 wrote to memory of 3000	2316	41d486ecbc7e076dc64d603fb09dbf0cff934c9816e427d16450aedf95672e9d.exe	cmd.exe
PID 2316 wrote to memory of 3000	2316	41d486ecbc7e076dc64d603fb09dbf0cff934c9816e427d16450aedf95672e9d.exe	cmd.exe
PID 3000 wrote to memory of 2868	3000	cmd.exe	timeout.exe
PID 3000 wrote to memory of 2868	3000	cmd.exe	timeout.exe
PID 3000 wrote to memory of 2868	3000	cmd.exe	timeout.exe
PID 2820 wrote to memory of 2740	2820	cmd.exe	schtasks.exe
PID 2820 wrote to memory of 2740	2820	cmd.exe	schtasks.exe
PID 2820 wrote to memory of 2740	2820	cmd.exe	schtasks.exe
PID 3000 wrote to memory of 2600	3000	cmd.exe	winfile.exe
PID 3000 wrote to memory of 2600	3000	cmd.exe	winfile.exe
PID 3000 wrote to memory of 2600	3000	cmd.exe	winfile.exe

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\41d486ecbc7e076dc64d603fb09dbf0cff934c9816e427d16450aedf95672e9d.exe
"C:\Users\Admin\AppData\Local\Temp\41d486ecbc7e076dc64d603fb09dbf0cff934c9816e427d16450aedf95672e9d.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2316

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "winfile" /tr '"C:\Users\Admin\AppData\Local\Temp\winfile.exe"' & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:2820

C:\Windows\system32\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "winfile" /tr '"C:\Users\Admin\AppData\Local\Temp\winfile.exe"'
3⤵
- Scheduled Task/Job: Scheduled Task
PID:2740

C:\Windows\system32\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp7FF9.tmp.bat""
2⤵
- Suspicious use of WriteProcessMemory
PID:3000

C:\Windows\system32\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:2868

C:\Users\Admin\AppData\Local\Temp\winfile.exe
"C:\Users\Admin\AppData\Local\Temp\winfile.exe"
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2600

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp7FF9.tmp.bat

Filesize
154B

MD5
919719c6e9a15bbc901378a6aacf8039

SHA1
58694329c9c477dad084ddb8be97706449de5d00

SHA256
ac552e5604997d203004def9d18172f77faf148e296b93cae6a86767ea8accf1

SHA512
7f1ab328d36e90be23f6b2cb9b548e3714136506a753a42329c948ec3af758ea07977ecfcd45489cda90eca1177604719833651386e873dffe5ec16f89ec4ebc

Download Submit
C:\Users\Admin\AppData\Local\Temp\winfile.exe

Filesize
47KB

MD5
90ef5e4f564a69f94e47955daecf5a7e

SHA1
8fd27d79d74a657fb6ecfcb0e1975f00a1cf417e

SHA256
41d486ecbc7e076dc64d603fb09dbf0cff934c9816e427d16450aedf95672e9d

SHA512
ad1e7b3c3776eae5448fe981520ca0c048000c13fd5c65d5c95dbd840ea56dfb8dbe164532fc9c013b96fd89ff3106170284de2ceb61c6907703299a5829365c

Download Submit
memory/2316-0-0x000007FEF59E3000-0x000007FEF59E4000-memory.dmp

Filesize
4KB

Download
memory/2316-1-0x00000000001C0000-0x00000000001D2000-memory.dmp

Filesize
72KB

Download
memory/2316-2-0x000007FEF59E0000-0x000007FEF63CC000-memory.dmp

Filesize
9.9MB

Download
memory/2316-12-0x000007FEF59E0000-0x000007FEF63CC000-memory.dmp

Filesize
9.9MB

Download
memory/2600-16-0x00000000003F0000-0x0000000000402000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads