asyncrat | 2b2e2be82fc0f29c6c91fa8fa530bce3859a78b22b937645553826c81f7e2852

General

Target

clientfinish.exe
Size

74KB
MD5

904b56c15b74175ee9ad9cd128dd0c6d
SHA1

97a36639afebb07948f036f83f730b763ce17d97
SHA256

2b2e2be82fc0f29c6c91fa8fa530bce3859a78b22b937645553826c81f7e2852
SHA512

cda12a6c221b5b3641d71838701781498d022b26a62cce749977008b739dfe2839d40dd2823f9fcd2c3dda67153a2524feaaf3df8905b424f2b593de9efb66fd
SSDEEP

1536:PUVgcxaJ5CTWPMVbGuK/IkH1b+1gN6Q3Qzc8+VclN:PUqcxaDAWPMVbGuKBH1b+2NB3Q5kY

Score

10^/10

asyncrat venomrat test rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

test

C2

127.0.0.1:4449

127.0.0.1:1177

187.18.72.113:4449

187.18.72.113:1177

189.14.62.242:4449

189.14.62.242:1177

192.168.1.6:4449

192.168.1.6:1177

Mutex

bbyamcmpnabjdr

Attributes

delay
1
install
true
install_file
Services.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

VenomRAT 3 IoCs

Detects VenomRAT.

rat

resource	yara_rule
behavioral1/memory/2792-1-0x0000000000800000-0x0000000000818000-memory.dmp	VenomRAT
behavioral1/files/0x0034000000016d3f-17.dat	VenomRAT
behavioral1/memory/2596-18-0x0000000000070000-0x0000000000088000-memory.dmp	VenomRAT

Venomrat family
venomrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x0034000000016d3f-17.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2596	Services.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
2692	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
2748	schtasks.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2792	clientfinish.exe
2792	clientfinish.exe
2792	clientfinish.exe
2596	Services.exe
2596	Services.exe
2596	Services.exe
2596	Services.exe
2596	Services.exe
2596	Services.exe
2596	Services.exe
2596	Services.exe
2596	Services.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2792	clientfinish.exe
Token: SeDebugPrivilege	2596	Services.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2596	Services.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2792 wrote to memory of 2140	2792	clientfinish.exe	30
PID 2792 wrote to memory of 2140	2792	clientfinish.exe	30
PID 2792 wrote to memory of 2140	2792	clientfinish.exe	30
PID 2792 wrote to memory of 2956	2792	clientfinish.exe	32
PID 2792 wrote to memory of 2956	2792	clientfinish.exe	32
PID 2792 wrote to memory of 2956	2792	clientfinish.exe	32
PID 2140 wrote to memory of 2748	2140	cmd.exe	34
PID 2140 wrote to memory of 2748	2140	cmd.exe	34
PID 2140 wrote to memory of 2748	2140	cmd.exe	34
PID 2956 wrote to memory of 2692	2956	cmd.exe	35
PID 2956 wrote to memory of 2692	2956	cmd.exe	35
PID 2956 wrote to memory of 2692	2956	cmd.exe	35
PID 2956 wrote to memory of 2596	2956	cmd.exe	36
PID 2956 wrote to memory of 2596	2956	cmd.exe	36
PID 2956 wrote to memory of 2596	2956	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\clientfinish.exe
"C:\Users\Admin\AppData\Local\Temp\clientfinish.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2792
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Services" /tr '"C:\Users\Admin\AppData\Roaming\Services.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2140
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Services" /tr '"C:\Users\Admin\AppData\Roaming\Services.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2748
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp7484.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2956
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2692
- - C:\Users\Admin\AppData\Roaming\Services.exe
    "C:\Users\Admin\AppData\Roaming\Services.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2596

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\tmp7484.tmp.bat

Filesize
152B

MD5
8c039e68b1500e39a8b52cf61cfd4549

SHA1
70e419494d41bb5164392623696a7fc0cf94e74d

SHA256
256039b499b55877b58960fd98dd0aef21b9fdfdeea0c3ee3a0f837bc9e9a946

SHA512
a5950e2e50e5e28db323b74128662062dd54aad430cc13efd3dc8b7162d893b24d5b4f3dd2922eceab8577450664a6f2f4d7bffbc6c6f8802809d7ed9860b308

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\Services.exe

Filesize
74KB

MD5
904b56c15b74175ee9ad9cd128dd0c6d

SHA1
97a36639afebb07948f036f83f730b763ce17d97

SHA256
2b2e2be82fc0f29c6c91fa8fa530bce3859a78b22b937645553826c81f7e2852

SHA512
cda12a6c221b5b3641d71838701781498d022b26a62cce749977008b739dfe2839d40dd2823f9fcd2c3dda67153a2524feaaf3df8905b424f2b593de9efb66fd

Download Submit
memory/2596-18-0x0000000000070000-0x0000000000088000-memory.dmp

Filesize
96KB

Download
memory/2792-0-0x000007FEF5FB3000-0x000007FEF5FB4000-memory.dmp

Filesize
4KB

Download
memory/2792-1-0x0000000000800000-0x0000000000818000-memory.dmp

Filesize
96KB

Download
memory/2792-3-0x000007FEF5FB0000-0x000007FEF699C000-memory.dmp

Filesize
9.9MB

Download
memory/2792-12-0x000007FEF5FB0000-0x000007FEF699C000-memory.dmp

Filesize
9.9MB

Download
memory/2792-14-0x000007FEF5FB0000-0x000007FEF699C000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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