asyncrat | 929bd74e00c56ec0935d5390a89dd4942abc1f3511a267034739fff0491e350b

General

Target

3.exe
Size

48KB
MD5

3d9e11f133404b0de3f4fd7e375e3fbf
SHA1

1da48c172f95eb337a3b3427f6360d112abf907e
SHA256

929bd74e00c56ec0935d5390a89dd4942abc1f3511a267034739fff0491e350b
SHA512

77aa948b664f957851bb33d2276df7315d5f05abe912bed1214f6e37270a525799fb04cacd0e17a6c07fff55f96a32222ecf71fcf2104e71de153c64de8f147c
SSDEEP

768:eVVFxILHtFp+BirI7Vf2ki6Y8Yb4gepge+6BvEgK/JYZVc6KN:eV27Eorzbvt6BnkJYZVclN

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

127.0.0.1:8848

127.0.0.1:52039

dfsgmnhsrf23456623423456-52039.portmap.host:8848

dfsgmnhsrf23456623423456-52039.portmap.host:52039

Mutex

DcRatMutex_qwqdanchunxinsfd,mhbm gdfvg

Attributes

delay
1
install
true
install_file
windows defender firewall required.exe
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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x00090000000120f9-14.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2672	windows defender firewall required.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
1644	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
2816	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2876	3.exe
2876	3.exe
2876	3.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2876	3.exe
Token: SeDebugPrivilege	2672	windows defender firewall required.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2876 wrote to memory of 2684	2876	3.exe	30
PID 2876 wrote to memory of 2684	2876	3.exe	30
PID 2876 wrote to memory of 2684	2876	3.exe	30
PID 2876 wrote to memory of 2940	2876	3.exe	32
PID 2876 wrote to memory of 2940	2876	3.exe	32
PID 2876 wrote to memory of 2940	2876	3.exe	32
PID 2940 wrote to memory of 1644	2940	cmd.exe	34
PID 2940 wrote to memory of 1644	2940	cmd.exe	34
PID 2940 wrote to memory of 1644	2940	cmd.exe	34
PID 2684 wrote to memory of 2816	2684	cmd.exe	35
PID 2684 wrote to memory of 2816	2684	cmd.exe	35
PID 2684 wrote to memory of 2816	2684	cmd.exe	35
PID 2940 wrote to memory of 2672	2940	cmd.exe	36
PID 2940 wrote to memory of 2672	2940	cmd.exe	36
PID 2940 wrote to memory of 2672	2940	cmd.exe	36

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\3.exe
"C:\Users\Admin\AppData\Local\Temp\3.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2876
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "windows defender firewall required" /tr '"C:\Users\Admin\AppData\Roaming\windows defender firewall required.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2684
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "windows defender firewall required" /tr '"C:\Users\Admin\AppData\Roaming\windows defender firewall required.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2816
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp67E7.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2940
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:1644
- - C:\Users\Admin\AppData\Roaming\windows defender firewall required.exe
    "C:\Users\Admin\AppData\Roaming\windows defender firewall required.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2672

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\tmp67E7.tmp.bat

Filesize
178B

MD5
b70b67f53690ab2488e2b2cd8b22a3ea

SHA1
ce0e139b5059dbfc16d2f5b0a3f74da8067ad7a9

SHA256
f8be05f0dba69999a51b163528e0b30a62fe46423dcebdb73d50409ba41fd102

SHA512
e990e36e7782b2af493383eb82e381d1546e1f2b88c3254f910a52df9498d47a3eb6c3f2dc61dae6db1f6be2da09977b2c500b07a92cac91006e4ab324f83455

Download Submit
C:\Users\Admin\AppData\Roaming\windows defender firewall required.exe

Filesize
48KB

MD5
3d9e11f133404b0de3f4fd7e375e3fbf

SHA1
1da48c172f95eb337a3b3427f6360d112abf907e

SHA256
929bd74e00c56ec0935d5390a89dd4942abc1f3511a267034739fff0491e350b

SHA512
77aa948b664f957851bb33d2276df7315d5f05abe912bed1214f6e37270a525799fb04cacd0e17a6c07fff55f96a32222ecf71fcf2104e71de153c64de8f147c

Download Submit
memory/2672-16-0x0000000001040000-0x0000000001052000-memory.dmp

Filesize
72KB

Download
memory/2876-0-0x000007FEF5E33000-0x000007FEF5E34000-memory.dmp

Filesize
4KB

Download
memory/2876-1-0x0000000001030000-0x0000000001042000-memory.dmp

Filesize
72KB

Download
memory/2876-2-0x000007FEF5E30000-0x000007FEF681C000-memory.dmp

Filesize
9.9MB

Download
memory/2876-12-0x000007FEF5E30000-0x000007FEF681C000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads