asyncrat | b62a8e8bbadf678bf9e62626feb5e33b298ab440102762f67948a487bfe4397b

General

Target

b62a8e8bbadf678bf9e62626feb5e33b298ab440102762f67948a487bfe4397bN.exe
Size

74KB
MD5

d31670507197670c37d81c457795afb0
SHA1

338955eaf9b4b052f016a2b75b7a06ecb9c81f72
SHA256

b62a8e8bbadf678bf9e62626feb5e33b298ab440102762f67948a487bfe4397b
SHA512

cc5eb799040fb5f1d099e1c280f47297ea470a2e117aab5c4115b540f74f78f4ab654505632e3b8b716051619bfda513df4b951b237cdf7b756ff37509e80a8f
SSDEEP

1536:sU6Acx2l/Cx2PMVie9VdQuDI6H1bf/L60ZKYXgQzciiVclN:sUjcx2Bq2PMVie9VdQsH1bfT6oKYXgQH

Score

10^/10

asyncrat venomrat default rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

127.0.0.1:4449

127.0.0.1:0

Mutex

heherherheheheherherh

Attributes

delay
1
install
true
install_file
explorer.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

Processes:

resource	yara_rule
behavioral1/memory/2848-1-0x0000000001360000-0x0000000001378000-memory.dmp	VenomRAT
C:\Users\Admin\AppData\Roaming\explorer.exe	VenomRAT
behavioral1/memory/2888-18-0x0000000000EA0000-0x0000000000EB8000-memory.dmp	VenomRAT

Venomrat family
venomrat

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Roaming\explorer.exe	family_asyncrat

Executes dropped EXE 1 IoCs

Processes:

explorer.exe

pid process

2888 explorer.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

2564 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

2280 schtasks.exe

pid	process
2888	explorer.exe

pid	process
2564	timeout.exe

pid	process
2280	schtasks.exe

Suspicious behavior: EnumeratesProcesses 37 IoCs

Processes:

b62a8e8bbadf678bf9e62626feb5e33b298ab440102762f67948a487bfe4397bN.exeexplorer.exe

pid	process
2848	b62a8e8bbadf678bf9e62626feb5e33b298ab440102762f67948a487bfe4397bN.exe
2848	b62a8e8bbadf678bf9e62626feb5e33b298ab440102762f67948a487bfe4397bN.exe
2848	b62a8e8bbadf678bf9e62626feb5e33b298ab440102762f67948a487bfe4397bN.exe
2888	explorer.exe
2888	explorer.exe
2888	explorer.exe
2888	explorer.exe
2888	explorer.exe
2888	explorer.exe
2888	explorer.exe
2888	explorer.exe
2888	explorer.exe
2888	explorer.exe
2888	explorer.exe
2888	explorer.exe
2888	explorer.exe
2888	explorer.exe
2888	explorer.exe
2888	explorer.exe
2888	explorer.exe
2888	explorer.exe
2888	explorer.exe
2888	explorer.exe
2888	explorer.exe
2888	explorer.exe
2888	explorer.exe
2888	explorer.exe
2888	explorer.exe
2888	explorer.exe
2888	explorer.exe
2888	explorer.exe
2888	explorer.exe
2888	explorer.exe
2888	explorer.exe
2888	explorer.exe
2888	explorer.exe
2888	explorer.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

b62a8e8bbadf678bf9e62626feb5e33b298ab440102762f67948a487bfe4397bN.exeexplorer.exe

description	pid	process
Token: SeDebugPrivilege	2848	b62a8e8bbadf678bf9e62626feb5e33b298ab440102762f67948a487bfe4397bN.exe
Token: SeDebugPrivilege	2888	explorer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

explorer.exe

pid process

2888 explorer.exe

pid	process
2888	explorer.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

b62a8e8bbadf678bf9e62626feb5e33b298ab440102762f67948a487bfe4397bN.execmd.execmd.exe

description	pid	process	target process
PID 2848 wrote to memory of 2700	2848	b62a8e8bbadf678bf9e62626feb5e33b298ab440102762f67948a487bfe4397bN.exe	cmd.exe
PID 2848 wrote to memory of 2700	2848	b62a8e8bbadf678bf9e62626feb5e33b298ab440102762f67948a487bfe4397bN.exe	cmd.exe
PID 2848 wrote to memory of 2700	2848	b62a8e8bbadf678bf9e62626feb5e33b298ab440102762f67948a487bfe4397bN.exe	cmd.exe
PID 2848 wrote to memory of 2772	2848	b62a8e8bbadf678bf9e62626feb5e33b298ab440102762f67948a487bfe4397bN.exe	cmd.exe
PID 2848 wrote to memory of 2772	2848	b62a8e8bbadf678bf9e62626feb5e33b298ab440102762f67948a487bfe4397bN.exe	cmd.exe
PID 2848 wrote to memory of 2772	2848	b62a8e8bbadf678bf9e62626feb5e33b298ab440102762f67948a487bfe4397bN.exe	cmd.exe
PID 2772 wrote to memory of 2564	2772	cmd.exe	timeout.exe
PID 2772 wrote to memory of 2564	2772	cmd.exe	timeout.exe
PID 2772 wrote to memory of 2564	2772	cmd.exe	timeout.exe
PID 2700 wrote to memory of 2280	2700	cmd.exe	schtasks.exe
PID 2700 wrote to memory of 2280	2700	cmd.exe	schtasks.exe
PID 2700 wrote to memory of 2280	2700	cmd.exe	schtasks.exe
PID 2772 wrote to memory of 2888	2772	cmd.exe	explorer.exe
PID 2772 wrote to memory of 2888	2772	cmd.exe	explorer.exe
PID 2772 wrote to memory of 2888	2772	cmd.exe	explorer.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\b62a8e8bbadf678bf9e62626feb5e33b298ab440102762f67948a487bfe4397bN.exe
"C:\Users\Admin\AppData\Local\Temp\b62a8e8bbadf678bf9e62626feb5e33b298ab440102762f67948a487bfe4397bN.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2848

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "explorer" /tr '"C:\Users\Admin\AppData\Roaming\explorer.exe"' & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:2700

C:\Windows\system32\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "explorer" /tr '"C:\Users\Admin\AppData\Roaming\explorer.exe"'
3⤵
- Scheduled Task/Job: Scheduled Task
PID:2280

C:\Windows\system32\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpE57F.tmp.bat""
2⤵
- Suspicious use of WriteProcessMemory
PID:2772

C:\Windows\system32\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:2564

C:\Users\Admin\AppData\Roaming\explorer.exe
"C:\Users\Admin\AppData\Roaming\explorer.exe"
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2888

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\tmpE57F.tmp.bat

Filesize
152B

MD5
a44c5772406571931e0f6b489dc7bb95

SHA1
8267d80e24072abc579c1a06e4006c328e8b63e6

SHA256
2434b6720f49b4a22d6c020641cf1be19cb513410fc075ada423dbde24bd8f08

SHA512
07725a6a09544e1f4e6c2cc91d0f66d4c25cc709fc8598e0b9d310e76346f6493905eaf9682b2b033a1d0fb267ad1bb9ba270034d793f9cf8822381152609ec4

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\explorer.exe

Filesize
74KB

MD5
d31670507197670c37d81c457795afb0

SHA1
338955eaf9b4b052f016a2b75b7a06ecb9c81f72

SHA256
b62a8e8bbadf678bf9e62626feb5e33b298ab440102762f67948a487bfe4397b

SHA512
cc5eb799040fb5f1d099e1c280f47297ea470a2e117aab5c4115b540f74f78f4ab654505632e3b8b716051619bfda513df4b951b237cdf7b756ff37509e80a8f

Download Submit
memory/2848-0-0x000007FEF5D53000-0x000007FEF5D54000-memory.dmp

Filesize
4KB

Download
memory/2848-1-0x0000000001360000-0x0000000001378000-memory.dmp

Filesize
96KB

Download
memory/2848-3-0x000007FEF5D50000-0x000007FEF673C000-memory.dmp

Filesize
9.9MB

Download
memory/2848-12-0x000007FEF5D50000-0x000007FEF673C000-memory.dmp

Filesize
9.9MB

Download
memory/2848-14-0x000007FEF5D50000-0x000007FEF673C000-memory.dmp

Filesize
9.9MB

Download
memory/2888-18-0x0000000000EA0000-0x0000000000EB8000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads