asyncrat | a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e

General

Target

a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe
Size

111KB
MD5

6d6f27b64358c6966fd7911ee5adb8c9
SHA1

b422bc3fb57b03d2e58abf2ac3dcad8a6fe52729
SHA256

a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e
SHA512

5a2c4493f979f13f011924c41622e0d0bf9495a3a58e91af8e0ef571aaf219bcdec7cabfa01e25fac00b2e30ad860a2b2d83553d8e746c9c18c1b32fac6d9f2f
SSDEEP

3072:FUDcx2Bq2PMVie9VdQsH1bfZW/QEl3SH2Tdp+VBY:FSq2PMViaesVb4zA2xM

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

127.0.0.1:4449

103.184.193.137:4449

Mutex

iywvnwqghg

Attributes

delay
1
install
true
install_file
system32.exe
install_folder
%AppData%

aes.plain

Signatures

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

VenomRAT 3 IoCs

Detects VenomRAT.

rat

resource	yara_rule
behavioral1/memory/2612-1-0x0000000001030000-0x0000000001052000-memory.dmp	VenomRAT
behavioral1/files/0x001e000000018f6e-16.dat	VenomRAT
behavioral1/memory/2680-18-0x0000000000880000-0x00000000008A2000-memory.dmp	VenomRAT

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x001e000000018f6e-16.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2680	system32.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
2652	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
2912	schtasks.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
2612	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe
2680	system32.exe
2680	system32.exe
2680	system32.exe
2680	system32.exe
2680	system32.exe
2680	system32.exe
2680	system32.exe
2680	system32.exe
2680	system32.exe
2680	system32.exe
2680	system32.exe
2680	system32.exe
2680	system32.exe
2680	system32.exe
2680	system32.exe
2680	system32.exe
2680	system32.exe
2680	system32.exe
2680	system32.exe
2680	system32.exe
2680	system32.exe
2680	system32.exe
2680	system32.exe
2680	system32.exe
2680	system32.exe
2680	system32.exe
2680	system32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2612	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe
Token: SeDebugPrivilege	2680	system32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2680	system32.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2612 wrote to memory of 2440	2612	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe	30
PID 2612 wrote to memory of 2440	2612	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe	30
PID 2612 wrote to memory of 2440	2612	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe	30
PID 2612 wrote to memory of 2888	2612	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe	31
PID 2612 wrote to memory of 2888	2612	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe	31
PID 2612 wrote to memory of 2888	2612	a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe	31
PID 2888 wrote to memory of 2652	2888	cmd.exe	34
PID 2888 wrote to memory of 2652	2888	cmd.exe	34
PID 2888 wrote to memory of 2652	2888	cmd.exe	34
PID 2440 wrote to memory of 2912	2440	cmd.exe	35
PID 2440 wrote to memory of 2912	2440	cmd.exe	35
PID 2440 wrote to memory of 2912	2440	cmd.exe	35
PID 2888 wrote to memory of 2680	2888	cmd.exe	36
PID 2888 wrote to memory of 2680	2888	cmd.exe	36
PID 2888 wrote to memory of 2680	2888	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\a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe
"C:\Users\Admin\AppData\Local\Temp\a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2612
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "system32" /tr '"C:\Users\Admin\AppData\Roaming\system32.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2440
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "system32" /tr '"C:\Users\Admin\AppData\Roaming\system32.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2912
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpE81E.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2888
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2652
- - C:\Users\Admin\AppData\Roaming\system32.exe
    "C:\Users\Admin\AppData\Roaming\system32.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2680

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\tmpE81E.tmp.bat

Filesize
152B

MD5
36436cb64da122f914e2ee5f8fdd9248

SHA1
5476635f163d489478ba0fd9446d561ec1b21253

SHA256
c407c5475f14c6babd43c11629fade20ca38d2dc88c6e7e28399de810571a8fc

SHA512
b2c96655e35626b88e935258020fd34e2bc5d21a381deb328238dc2b7229267fdc172be92be7cd1783061bb7ce88875ec5346ba7d71c25bd2d552f8138ae6a95

Download Submit
C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf

Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

Download Submit
C:\Users\Admin\AppData\Roaming\system32.exe

Filesize
111KB

MD5
6d6f27b64358c6966fd7911ee5adb8c9

SHA1
b422bc3fb57b03d2e58abf2ac3dcad8a6fe52729

SHA256
a98daf22eb21730e1b487b8f1aea1631ec562085cc73a3c65d5d72f5714a013e

SHA512
5a2c4493f979f13f011924c41622e0d0bf9495a3a58e91af8e0ef571aaf219bcdec7cabfa01e25fac00b2e30ad860a2b2d83553d8e746c9c18c1b32fac6d9f2f

Download Submit
memory/2612-0-0x000007FEF5663000-0x000007FEF5664000-memory.dmp

Filesize
4KB

Download
memory/2612-1-0x0000000001030000-0x0000000001052000-memory.dmp

Filesize
136KB

Download
memory/2612-3-0x000007FEF5660000-0x000007FEF604C000-memory.dmp

Filesize
9.9MB

Download
memory/2612-11-0x000007FEF5660000-0x000007FEF604C000-memory.dmp

Filesize
9.9MB

Download
memory/2612-14-0x000007FEF5660000-0x000007FEF604C000-memory.dmp

Filesize
9.9MB

Download
memory/2680-18-0x0000000000880000-0x00000000008A2000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads