asyncrat | e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d

Analysis

max time kernel
119s
max time network
108s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
28-07-2024 03:56

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General

Target

483ea502e0c3fa73f8384ece68e0cfc0N.exe
Size

74KB
MD5

483ea502e0c3fa73f8384ece68e0cfc0
SHA1

a01d7e6ced28a41e03c4aa651ce68c9e855a0489
SHA256

e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d
SHA512

8d610258c0b1e953bb1b22cf39bce267875e76039ff8ec13221ea236c48e2c88e275e650e8ec323ae107b6435d34ea60f3760dcc81761a59a266d34b5e0360a0
SSDEEP

1536:FUSwcxea0CTmPMVWe9VdQuDI6H1bf/DEhQzcKLVclN:FUTcxeFImPMVWe9VdQsH1bfrEhQ7BY

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

127.0.0.1:4449

127.0.0.1:0

85.105.91.170:4449

85.105.91.170:0

Mutex

magtzafsfzjwekrq

Attributes

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

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x0002000000022a92-13.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-1-5-21-3419463127-3903270268-2580331543-1000\Control Panel\International\Geo\Nation	483ea502e0c3fa73f8384ece68e0cfc0N.exe

Executes dropped EXE 1 IoCs

pid	Process
4112	aa.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
1116	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
1128	schtasks.exe

Suspicious behavior: EnumeratesProcesses 53 IoCs

pid	Process
1420	483ea502e0c3fa73f8384ece68e0cfc0N.exe
1420	483ea502e0c3fa73f8384ece68e0cfc0N.exe
1420	483ea502e0c3fa73f8384ece68e0cfc0N.exe
1420	483ea502e0c3fa73f8384ece68e0cfc0N.exe
1420	483ea502e0c3fa73f8384ece68e0cfc0N.exe
1420	483ea502e0c3fa73f8384ece68e0cfc0N.exe
1420	483ea502e0c3fa73f8384ece68e0cfc0N.exe
1420	483ea502e0c3fa73f8384ece68e0cfc0N.exe
1420	483ea502e0c3fa73f8384ece68e0cfc0N.exe
1420	483ea502e0c3fa73f8384ece68e0cfc0N.exe
1420	483ea502e0c3fa73f8384ece68e0cfc0N.exe
1420	483ea502e0c3fa73f8384ece68e0cfc0N.exe
1420	483ea502e0c3fa73f8384ece68e0cfc0N.exe
1420	483ea502e0c3fa73f8384ece68e0cfc0N.exe
1420	483ea502e0c3fa73f8384ece68e0cfc0N.exe
1420	483ea502e0c3fa73f8384ece68e0cfc0N.exe
1420	483ea502e0c3fa73f8384ece68e0cfc0N.exe
1420	483ea502e0c3fa73f8384ece68e0cfc0N.exe
1420	483ea502e0c3fa73f8384ece68e0cfc0N.exe
1420	483ea502e0c3fa73f8384ece68e0cfc0N.exe
1420	483ea502e0c3fa73f8384ece68e0cfc0N.exe
1420	483ea502e0c3fa73f8384ece68e0cfc0N.exe
1420	483ea502e0c3fa73f8384ece68e0cfc0N.exe
4112	aa.exe
4112	aa.exe
4112	aa.exe
4112	aa.exe
4112	aa.exe
4112	aa.exe
4112	aa.exe
4112	aa.exe
4112	aa.exe
4112	aa.exe
4112	aa.exe
4112	aa.exe
4112	aa.exe
4112	aa.exe
4112	aa.exe
4112	aa.exe
4112	aa.exe
4112	aa.exe
4112	aa.exe
4112	aa.exe
4112	aa.exe
4112	aa.exe
4112	aa.exe
4112	aa.exe
4112	aa.exe
4112	aa.exe
4112	aa.exe
4112	aa.exe
4112	aa.exe
4112	aa.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1420	483ea502e0c3fa73f8384ece68e0cfc0N.exe
Token: SeDebugPrivilege	4112	aa.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4112	aa.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1420 wrote to memory of 4076	1420	483ea502e0c3fa73f8384ece68e0cfc0N.exe	87
PID 1420 wrote to memory of 4076	1420	483ea502e0c3fa73f8384ece68e0cfc0N.exe	87
PID 1420 wrote to memory of 1664	1420	483ea502e0c3fa73f8384ece68e0cfc0N.exe	88
PID 1420 wrote to memory of 1664	1420	483ea502e0c3fa73f8384ece68e0cfc0N.exe	88
PID 4076 wrote to memory of 1128	4076	cmd.exe	91
PID 4076 wrote to memory of 1128	4076	cmd.exe	91
PID 1664 wrote to memory of 1116	1664	cmd.exe	92
PID 1664 wrote to memory of 1116	1664	cmd.exe	92
PID 1664 wrote to memory of 4112	1664	cmd.exe	95
PID 1664 wrote to memory of 4112	1664	cmd.exe	95

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\483ea502e0c3fa73f8384ece68e0cfc0N.exe
"C:\Users\Admin\AppData\Local\Temp\483ea502e0c3fa73f8384ece68e0cfc0N.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1420
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "aa" /tr '"C:\Users\Admin\AppData\Roaming\aa.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4076
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "aa" /tr '"C:\Users\Admin\AppData\Roaming\aa.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1128
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpB95D.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1664
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:1116
- - C:\Users\Admin\AppData\Roaming\aa.exe
    "C:\Users\Admin\AppData\Roaming\aa.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:4112

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpB95D.tmp.bat

Filesize
146B

MD5
e6692aaf2c87d3c0d88fac0f81845e2d

SHA1
e3c823776171ccf4450e1c3a82a788dc9ba86fa5

SHA256
b4f9735a4f24ee952aa0d235d01fefc592290b5a38dcc9f673b40a7e7cecb870

SHA512
f33369f952112cc6e7bbcaa9d471946e5fb5c56c0fb89e07e869d1e37a9610b671810c3588ef054d5d245134f7f62b86df48fa1b8c8d5574bd1035e41a5ba40f

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\aa.exe

Filesize
74KB

MD5
483ea502e0c3fa73f8384ece68e0cfc0

SHA1
a01d7e6ced28a41e03c4aa651ce68c9e855a0489

SHA256
e34009211e3fc2f56b92d9754e2436eee863031a9ff24f44db6c7958c67f6c9d

SHA512
8d610258c0b1e953bb1b22cf39bce267875e76039ff8ec13221ea236c48e2c88e275e650e8ec323ae107b6435d34ea60f3760dcc81761a59a266d34b5e0360a0

Download Submit
memory/1420-0-0x00007FFFE2E03000-0x00007FFFE2E05000-memory.dmp

Filesize
8KB

Download
memory/1420-1-0x0000000000E00000-0x0000000000E18000-memory.dmp

Filesize
96KB

Download
memory/1420-3-0x00007FFFE2E00000-0x00007FFFE38C1000-memory.dmp

Filesize
10.8MB

Download
memory/1420-8-0x00007FFFE2E00000-0x00007FFFE38C1000-memory.dmp

Filesize
10.8MB

Download
memory/1420-9-0x00007FFFE2E00000-0x00007FFFE38C1000-memory.dmp

Filesize
10.8MB

Download