asyncrat | 883ed64083968eec69d6974ce6f58e5cce6d84319a71a439edcb4f0a06283b97

Analysis

max time kernel
121s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
28-02-2023 05:35

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General

Target

VenomRAT_HVNC.exe
Size

16.6MB
MD5

5384c0396589430eeb3d1a2e05703e9a
SHA1

20da44da7639bbef2f6b5bfc21df7474cd1109af
SHA256

b4250aff983f1f588593baed1adb4797e6c1ab6225595ebd013b50348a57a459
SHA512

9bf613ee62b0e56af500dd88f572b2221ad6df63b0b4c0dcb0ef763efcebeac633a95f10dfce90f6cff038df2810681dd55dcdd272eb9f907c670cc2e4f7363a
SSDEEP

393216:Al9Yl7Elel7ElAlQleTl/l/l/l/l/lzlml/lqlZlHl/l/l/l/l/l/lIlAl+lUl2L:6TXT

Score

10^/10

asyncrat agilenet rat

Malware Config

Signatures

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

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral4/memory/2096-133-0x0000000000350000-0x00000000013EA000-memory.dmp	asyncrat

Loads dropped DLL 1 IoCs

Processes:

VenomRAT_HVNC.exe

pid process

2096 VenomRAT_HVNC.exe

Obfuscated with Agile.Net obfuscator 1 IoCs

Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

agilenet

Processes:

resource	yara_rule
behavioral4/memory/2096-138-0x0000000006A10000-0x0000000006C20000-memory.dmp	agile_net

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

VenomRAT_HVNC.exe

description	ioc	process
Key opened	\Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0	VenomRAT_HVNC.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	VenomRAT_HVNC.exe

Suspicious behavior: EnumeratesProcesses 27 IoCs

Processes:

VenomRAT_HVNC.exe

pid	process
2096	VenomRAT_HVNC.exe
2096	VenomRAT_HVNC.exe
2096	VenomRAT_HVNC.exe
2096	VenomRAT_HVNC.exe
2096	VenomRAT_HVNC.exe
2096	VenomRAT_HVNC.exe
2096	VenomRAT_HVNC.exe
2096	VenomRAT_HVNC.exe
2096	VenomRAT_HVNC.exe
2096	VenomRAT_HVNC.exe
2096	VenomRAT_HVNC.exe
2096	VenomRAT_HVNC.exe
2096	VenomRAT_HVNC.exe
2096	VenomRAT_HVNC.exe
2096	VenomRAT_HVNC.exe
2096	VenomRAT_HVNC.exe
2096	VenomRAT_HVNC.exe
2096	VenomRAT_HVNC.exe
2096	VenomRAT_HVNC.exe
2096	VenomRAT_HVNC.exe
2096	VenomRAT_HVNC.exe
2096	VenomRAT_HVNC.exe
2096	VenomRAT_HVNC.exe
2096	VenomRAT_HVNC.exe
2096	VenomRAT_HVNC.exe
2096	VenomRAT_HVNC.exe
2096	VenomRAT_HVNC.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

VenomRAT_HVNC.exe

description pid process

Token: SeDebugPrivilege 2096 VenomRAT_HVNC.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

VenomRAT_HVNC.exe

pid process

2096 VenomRAT_HVNC.exe
Suspicious use of SendNotifyMessage 1 IoCs

Processes:

VenomRAT_HVNC.exe

pid process

2096 VenomRAT_HVNC.exe

description	pid	process
Token: SeDebugPrivilege	2096	VenomRAT_HVNC.exe

C:\Users\Admin\AppData\Local\Temp\VenomRAT_HVNC.exe
"C:\Users\Admin\AppData\Local\Temp\VenomRAT_HVNC.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:2096

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:2472

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\ce5561ca-8be2-48c6-aded-c0fd7a17d1be\AgileDotNetRT.dll
Filesize
94KB

MD5
14ff402962ad21b78ae0b4c43cd1f194

SHA1
f8a510eb26666e875a5bdd1cadad40602763ad72

SHA256
fb9646cb956945bdc503e69645f6b5316d3826b780d3c36738d6b944e884d15b

SHA512
daa7a08bf3709119a944bce28f6ebdd24e54a22b18cd9f86a87873e958df121a3881dcdd5e162f6b4e543238c7aef20f657c9830df01d4c79290f7c9a4fcc54b

Download Submit
C:\Users\Admin\AppData\Local\Temp\ce5561ca-8be2-48c6-aded-c0fd7a17d1be\AgileDotNetRT.dll
Filesize
94KB

MD5
14ff402962ad21b78ae0b4c43cd1f194

SHA1
f8a510eb26666e875a5bdd1cadad40602763ad72

SHA256
fb9646cb956945bdc503e69645f6b5316d3826b780d3c36738d6b944e884d15b

SHA512
daa7a08bf3709119a944bce28f6ebdd24e54a22b18cd9f86a87873e958df121a3881dcdd5e162f6b4e543238c7aef20f657c9830df01d4c79290f7c9a4fcc54b

Download Submit
memory/2096-146-0x0000000073140000-0x00000000731C9000-memory.dmp

Filesize
548KB

Download
memory/2096-147-0x0000000006090000-0x00000000060A0000-memory.dmp

Filesize
64KB

Download
memory/2096-137-0x0000000005E50000-0x0000000005E5A000-memory.dmp

Filesize
40KB

Download
memory/2096-138-0x0000000006A10000-0x0000000006C20000-memory.dmp

Filesize
2.1MB

Download
memory/2096-135-0x0000000005DB0000-0x0000000005E42000-memory.dmp

Filesize
584KB

Download
memory/2096-134-0x0000000006460000-0x0000000006A04000-memory.dmp

Filesize
5.6MB

Download
memory/2096-133-0x0000000000350000-0x00000000013EA000-memory.dmp

Filesize
16.6MB

Download
memory/2096-136-0x0000000005D30000-0x0000000005D42000-memory.dmp

Filesize
72KB

Download
memory/2096-148-0x0000000006090000-0x00000000060A0000-memory.dmp

Filesize
64KB

Download
memory/2096-149-0x0000000006090000-0x00000000060A0000-memory.dmp

Filesize
64KB

Download
memory/2096-150-0x0000000006090000-0x00000000060A0000-memory.dmp

Filesize
64KB

Download
memory/2096-151-0x000000000BC90000-0x000000000BEE2000-memory.dmp

Filesize
2.3MB

Download
memory/2096-154-0x0000000006090000-0x00000000060A0000-memory.dmp

Filesize
64KB

Download
memory/2096-155-0x0000000006090000-0x00000000060A0000-memory.dmp

Filesize
64KB

Download