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
behavioral2/files/0x001f00000002aabb-10.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2032	windows defender firewall required.exe

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

System Information Discovery
T1082

Checks SCSI registry key(s) 3 TTPs 3 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName	taskmgr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000	taskmgr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A	taskmgr.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
672	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
4160	schtasks.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
2068	3.exe
2068	3.exe
2068	3.exe
2068	3.exe
2068	3.exe
2068	3.exe
2068	3.exe
2068	3.exe
2068	3.exe
2068	3.exe
2068	3.exe
2068	3.exe
2068	3.exe
2068	3.exe
2068	3.exe
2068	3.exe
2068	3.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	2068	3.exe
Token: SeDebugPrivilege	2032	windows defender firewall required.exe
Token: SeDebugPrivilege	2184	taskmgr.exe
Token: SeSystemProfilePrivilege	2184	taskmgr.exe
Token: SeCreateGlobalPrivilege	2184	taskmgr.exe
Token: 33	2184	taskmgr.exe
Token: SeIncBasePriorityPrivilege	2184	taskmgr.exe

Suspicious use of FindShellTrayWindow 36 IoCs

pid	Process
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe

Suspicious use of SendNotifyMessage 36 IoCs

pid	Process
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe
2184	taskmgr.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2068 wrote to memory of 3784	2068	3.exe	77
PID 2068 wrote to memory of 3784	2068	3.exe	77
PID 2068 wrote to memory of 1984	2068	3.exe	79
PID 2068 wrote to memory of 1984	2068	3.exe	79
PID 3784 wrote to memory of 4160	3784	cmd.exe	81
PID 3784 wrote to memory of 4160	3784	cmd.exe	81
PID 1984 wrote to memory of 672	1984	cmd.exe	82
PID 1984 wrote to memory of 672	1984	cmd.exe	82
PID 1984 wrote to memory of 2032	1984	cmd.exe	83
PID 1984 wrote to memory of 2032	1984	cmd.exe	83

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:2068
- 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:3784
- - 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:4160
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpAC7C.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1984
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:672
- - 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:2032

C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /0
1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:2184

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

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpAC7C.tmp.bat

Filesize
178B

MD5
1de42997fe317ff278d4253f1b92ece9

SHA1
7e994ebe11770e5b1c06cbf4a308481188a0ae83

SHA256
da08d515ec8cc201b185c2b1f59f305dbe994a517d8b9134ebd792603da3a620

SHA512
015aff12d663ed2a69713b1a8c63929923da3d46268676626dc53e9c262fee2037bb8537b78d326d56056c8c387c85d715278c542d7dd7ecbe4c4e774cc1d277

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/2068-0-0x00007FFDA3DE3000-0x00007FFDA3DE5000-memory.dmp

Filesize
8KB

Download
memory/2068-1-0x0000000000730000-0x0000000000742000-memory.dmp

Filesize
72KB

Download
memory/2068-2-0x00007FFDA3DE0000-0x00007FFDA48A2000-memory.dmp

Filesize
10.8MB

Download
memory/2068-7-0x00007FFDA3DE0000-0x00007FFDA48A2000-memory.dmp

Filesize
10.8MB

Download
memory/2184-12-0x000001B9F48A0000-0x000001B9F48A1000-memory.dmp

Filesize
4KB

Download
memory/2184-14-0x000001B9F48A0000-0x000001B9F48A1000-memory.dmp

Filesize
4KB

Download
memory/2184-13-0x000001B9F48A0000-0x000001B9F48A1000-memory.dmp

Filesize
4KB

Download
memory/2184-18-0x000001B9F48A0000-0x000001B9F48A1000-memory.dmp

Filesize
4KB

Download
memory/2184-24-0x000001B9F48A0000-0x000001B9F48A1000-memory.dmp

Filesize
4KB

Download
memory/2184-23-0x000001B9F48A0000-0x000001B9F48A1000-memory.dmp

Filesize
4KB

Download
memory/2184-22-0x000001B9F48A0000-0x000001B9F48A1000-memory.dmp

Filesize
4KB

Download
memory/2184-21-0x000001B9F48A0000-0x000001B9F48A1000-memory.dmp

Filesize
4KB

Download
memory/2184-20-0x000001B9F48A0000-0x000001B9F48A1000-memory.dmp

Filesize
4KB

Download
memory/2184-19-0x000001B9F48A0000-0x000001B9F48A1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads