asyncrat | 62faa6629d18abb3b5f3a1137267ba32fd685bc8fd2de7b9b2b908d156511cf0

General

Target

62faa6629d18abb3b5f3a1137267ba32fd685bc8fd2de7b9b2b908d156511cf0.exe
Size

2.9MB
MD5

5e985577ae17524bda2af7b183bbb0bb
SHA1

041e93e1a56d37032fc2fb1f61481bcbcef04f8d
SHA256

62faa6629d18abb3b5f3a1137267ba32fd685bc8fd2de7b9b2b908d156511cf0
SHA512

f2b3ac015705bd77c149a727413d8987cc018cc5ac3a48e3841ef7bade75e3a69497e77092e7eb0029c551043cf9af3657cd640cc23387b9703344dd0bf0acd2
SSDEEP

49152:1IOY/SiSf6KSIshmgTlxRQv9rn0KtX2pyJz0qGoyEs:1kKZshhYv9ptXZJe

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

Mutex

vhlcckztkbtpquk

Attributes

delay
1
install
false
install_folder
%AppData%
pastebin_config
https://pastebin.ai/raw/bth2zeoztv

aes.plain

Signatures

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

VenomRAT 2 IoCs

Detects VenomRAT.

rat

resource	yara_rule
behavioral2/files/0x000a000000023476-17.dat	VenomRAT
behavioral2/memory/700-20-0x0000000000150000-0x0000000000168000-memory.dmp	VenomRAT

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x000a000000023476-17.dat	family_asyncrat

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	62faa6629d18abb3b5f3a1137267ba32fd685bc8fd2de7b9b2b908d156511cf0.exe

Executes dropped EXE 2 IoCs

pid	Process
2452	CELESTY.EXE
700	CLIENT.EXE

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
19	0.tcp.eu.ngrok.io
56	0.tcp.eu.ngrok.io

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	62faa6629d18abb3b5f3a1137267ba32fd685bc8fd2de7b9b2b908d156511cf0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	CELESTY.EXE

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
700	CLIENT.EXE
700	CLIENT.EXE
700	CLIENT.EXE
700	CLIENT.EXE
700	CLIENT.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	700	CLIENT.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
2452	CELESTY.EXE
2452	CELESTY.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
2452	CELESTY.EXE
2452	CELESTY.EXE

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
700	CLIENT.EXE

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3408 wrote to memory of 2452	3408	62faa6629d18abb3b5f3a1137267ba32fd685bc8fd2de7b9b2b908d156511cf0.exe	86
PID 3408 wrote to memory of 2452	3408	62faa6629d18abb3b5f3a1137267ba32fd685bc8fd2de7b9b2b908d156511cf0.exe	86
PID 3408 wrote to memory of 2452	3408	62faa6629d18abb3b5f3a1137267ba32fd685bc8fd2de7b9b2b908d156511cf0.exe	86
PID 3408 wrote to memory of 700	3408	62faa6629d18abb3b5f3a1137267ba32fd685bc8fd2de7b9b2b908d156511cf0.exe	87
PID 3408 wrote to memory of 700	3408	62faa6629d18abb3b5f3a1137267ba32fd685bc8fd2de7b9b2b908d156511cf0.exe	87

C:\Users\Admin\AppData\Local\Temp\62faa6629d18abb3b5f3a1137267ba32fd685bc8fd2de7b9b2b908d156511cf0.exe
"C:\Users\Admin\AppData\Local\Temp\62faa6629d18abb3b5f3a1137267ba32fd685bc8fd2de7b9b2b908d156511cf0.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3408
- C:\Users\Admin\AppData\Local\Temp\CELESTY.EXE
  "C:\Users\Admin\AppData\Local\Temp\CELESTY.EXE"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:2452
- C:\Users\Admin\AppData\Local\Temp\CLIENT.EXE
  "C:\Users\Admin\AppData\Local\Temp\CLIENT.EXE"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:700

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\CELESTY.EXE

Filesize
2.7MB

MD5
c3009ee63bc661d9ea75eaeb256448ca

SHA1
45eb01150756df432e25eed44d976442473356de

SHA256
0bb88564a22bfd6d9ad6e4d8efa9077792a7b6094c2a0f865d70c43e11507352

SHA512
96f5847fbeef95df1309e97a4bc3d786a5f5c19b87e804f12d88b4473a0b50291c40407a3d95a2d5d78031f03be76da47f1846a73c7802ddae46a38ac4634e67

Download Submit
C:\Users\Admin\AppData\Local\Temp\CLIENT.EXE

Filesize
74KB

MD5
55f73c9b3197d7d7bb7156b04601c2f0

SHA1
bd40272e5b4dd5b3dd1c74c49fa40c59b7cf26da

SHA256
7c2cbfbb042e20dd4a785ece1d49dbcfd48711abed518531acaeacf6b65419ae

SHA512
27ff1a737e052299a2825d4467fc4a546a9fbc10302a9781d3701fa94d8e8be671bd9d37e2975561ab3f07a8fd72db1f78601c58d77519f0341d8595e0a2a68e

Download Submit
memory/700-27-0x000000001AE90000-0x000000001AEA0000-memory.dmp

Filesize
64KB

Download
memory/700-19-0x00007FF8DF8A3000-0x00007FF8DF8A5000-memory.dmp

Filesize
8KB

Download
memory/700-20-0x0000000000150000-0x0000000000168000-memory.dmp

Filesize
96KB

Download
memory/700-23-0x000000001AE90000-0x000000001AEA0000-memory.dmp

Filesize
64KB

Download
memory/700-24-0x00007FF8FDF7F000-0x00007FF8FDF80000-memory.dmp

Filesize
4KB

Download
memory/700-25-0x00007FF8DF8A3000-0x00007FF8DF8A5000-memory.dmp

Filesize
8KB

Download
memory/2452-30-0x0000000000400000-0x00000000006DC000-memory.dmp

Filesize
2.9MB

Download
memory/2452-33-0x0000000000400000-0x00000000006DC000-memory.dmp

Filesize
2.9MB

Download
memory/2452-28-0x0000000000400000-0x00000000006DC000-memory.dmp

Filesize
2.9MB

Download
memory/2452-29-0x0000000000400000-0x00000000006DC000-memory.dmp

Filesize
2.9MB

Download
memory/2452-21-0x0000000002710000-0x0000000002711000-memory.dmp

Filesize
4KB

Download
memory/2452-31-0x0000000000400000-0x00000000006DC000-memory.dmp

Filesize
2.9MB

Download
memory/2452-32-0x0000000000400000-0x00000000006DC000-memory.dmp

Filesize
2.9MB

Download
memory/2452-26-0x0000000002710000-0x0000000002711000-memory.dmp

Filesize
4KB

Download
memory/2452-34-0x0000000000400000-0x00000000006DC000-memory.dmp

Filesize
2.9MB

Download
memory/2452-35-0x0000000000400000-0x00000000006DC000-memory.dmp

Filesize
2.9MB

Download
memory/2452-36-0x0000000000400000-0x00000000006DC000-memory.dmp

Filesize
2.9MB

Download
memory/2452-37-0x0000000000400000-0x00000000006DC000-memory.dmp

Filesize
2.9MB

Download
memory/2452-38-0x0000000000400000-0x00000000006DC000-memory.dmp

Filesize
2.9MB

Download
memory/2452-39-0x0000000000400000-0x00000000006DC000-memory.dmp

Filesize
2.9MB

Download
memory/2452-40-0x0000000000400000-0x00000000006DC000-memory.dmp

Filesize
2.9MB

Download
memory/2452-41-0x0000000000400000-0x00000000006DC000-memory.dmp

Filesize
2.9MB

Download

Analysis

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