asyncrat | 0a1f90b176650067e0d08e1c9d801d9a62f111d03147f4e031dc0b171414f0e9

Analysis

max time kernel
146s
max time network
94s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
10-01-2025 22:53

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General

Target

33.exe
Size

10.1MB
MD5

4e3a006ce15aca43da90672230a796c1
SHA1

dff8ca029e78d234b98d5e7d985023cfc082dc83
SHA256

0a1f90b176650067e0d08e1c9d801d9a62f111d03147f4e031dc0b171414f0e9
SHA512

caac92a35d4f8c78c7e299ac8d6f2979fe4bab5d937de381605857e303cb4bf923e0ccb3e75a29ff3bf69c6109ae2ce8a6e7ccf76ec2535addf5b5b96d942bfc
SSDEEP

196608:bF8b83kdQewq3OQos23SltXMCHGLLc54i1wN+jrRRu7NtbFRKnZMZDBiQmh1wlxC:W/aewq3Obs2CltXMCHWUjLrRQ7XbFsng

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
false
install_file
mostafa.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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral3/files/0x001900000002aaf5-53.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
4636	0a6372bd.exe

Loads dropped DLL 10 IoCs

pid	Process
4820	33.exe
4820	33.exe
4820	33.exe
4820	33.exe
4820	33.exe
4820	33.exe
4820	33.exe
4820	33.exe
4820	33.exe
4820	33.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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	0a6372bd.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 400 wrote to memory of 4820	400	33.exe	77
PID 400 wrote to memory of 4820	400	33.exe	77
PID 4820 wrote to memory of 4504	4820	33.exe	78
PID 4820 wrote to memory of 4504	4820	33.exe	78
PID 4504 wrote to memory of 4636	4504	cmd.exe	80
PID 4504 wrote to memory of 4636	4504	cmd.exe	80
PID 4504 wrote to memory of 4636	4504	cmd.exe	80

C:\Users\Admin\AppData\Local\Temp\33.exe
"C:\Users\Admin\AppData\Local\Temp\33.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:400
- C:\Users\Admin\AppData\Local\Temp\33.exe
  "C:\Users\Admin\AppData\Local\Temp\33.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:4820
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c start /min C:\Users\Admin\AppData\Local\Temp\0a6372bd.exe
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4504
  - - C:\Users\Admin\AppData\Local\Temp\0a6372bd.exe
      C:\Users\Admin\AppData\Local\Temp\0a6372bd.exe
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:4636

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\0a6372bd.exe

Filesize
45KB

MD5
4dd712a488c5379d9ef4691e7c20513b

SHA1
acdea7eed40a43d5a25f4362768735f46d91aac7

SHA256
06d70efdcd27a119c99de51e2224d81905f6af3315f57b66c1a1f2582d88f1e9

SHA512
413a50cf16dd8de167eaba2c6a110d7cbd55832ffe8177f87824c612f18bef2e49a792c75ab6c40e07ea11ffcb0bdfb5bb0b1069a2255d665a868b597afdbc76

Download Submit
C:\Users\Admin\AppData\Local\Temp\_MEI4002\VCRUNTIME140.dll

Filesize
117KB

MD5
862f820c3251e4ca6fc0ac00e4092239

SHA1
ef96d84b253041b090c243594f90938e9a487a9a

SHA256
36585912e5eaf83ba9fea0631534f690ccdc2d7ba91537166fe53e56c221e153

SHA512
2f8a0f11bccc3a8cb99637deeda0158240df0885a230f38bb7f21257c659f05646c6b61e993f87e0877f6ba06b347ddd1fc45d5c44bc4e309ef75ed882b82e4e

Download Submit
C:\Users\Admin\AppData\Local\Temp\_MEI4002\_bz2.pyd

Filesize
83KB

MD5
c17dcb7fc227601471a641ec90e6237f

SHA1
c93a8c2430e844f40f1d9c880aa74612409ffbb9

SHA256
55894b2b98d01f37b9a8cf4daf926d0161ff23c2fb31c56f9dbbac3a61932712

SHA512
38851cbd234a51394673a7514110eb43037b4e19d2a6fb79471cc7d01dbcf2695e70df4ba2727c69f1fed56fc7980e3ca37fddff73cc3294a2ea44facdeb0fa9

Download Submit
C:\Users\Admin\AppData\Local\Temp\_MEI4002\_cffi_backend.cp313-win_amd64.pyd

Filesize
175KB

MD5
5cba92e7c00d09a55f5cbadc8d16cd26

SHA1
0300c6b62cd9db98562fdd3de32096ab194da4c8

SHA256
0e3d149b91fc7dc3367ab94620a5e13af6e419f423b31d4800c381468cb8ad85

SHA512
7ab432c8774a10f04ddd061b57d07eba96481b5bb8c663c6ade500d224c6061bc15d17c74da20a7c3cec8bbf6453404d553ebab22d37d67f9b163d7a15cf1ded

Download Submit
C:\Users\Admin\AppData\Local\Temp\_MEI4002\_ctypes.pyd

Filesize
129KB

MD5
2bd5dabbb35398a506e3406bc01eba26

SHA1
af3ab9d8467e25367d03cb7479a3e4324917f8d0

SHA256
5c4c489ac052795c27af063c96bc4db5ab250144d4839050cfa9bb3836b87c32

SHA512
c07860d86ae0d900e44945da77e3b620005667304c0715985f06000f3d410fffb7e38e1bc84e4e6d24889d46b9dac6bf18861c95b2b09e760012edc5406b3838

Download Submit
C:\Users\Admin\AppData\Local\Temp\_MEI4002\_decimal.pyd

Filesize
274KB

MD5
ad4324e5cc794d626ffccda544a5a833

SHA1
ef925e000383b6cad9361430fc38264540d434a5

SHA256
040f361f63204b55c17a100c260c7ddfadd00866cc055fbd641b83a6747547d5

SHA512
0a002b79418242112600b9246da66a5c04651aecb2e245f0220b2544d7b7df67a20139f45ddf2d4e7759ce8cc3d6b4be7f98b0a221c756449eb1b6d7af602325

Download Submit
C:\Users\Admin\AppData\Local\Temp\_MEI4002\_hashlib.pyd

Filesize
63KB

MD5
422e214ca76421e794b99f99a374b077

SHA1
58b24448ab889948303cdefe28a7c697687b7ebc

SHA256
78223aef72777efc93c739f5308a3fc5de28b7d10e6975b8947552a62592772b

SHA512
03fcccc5a300cc029bef06c601915fa38604d955995b127b5b121cb55fb81752a8a1eec4b1b263ba12c51538080335dabaef9e2b8259b4bf02af84a680552fa0

Download Submit
C:\Users\Admin\AppData\Local\Temp\_MEI4002\_lzma.pyd

Filesize
155KB

MD5
66a9028efd1bb12047dafce391fd6198

SHA1
e0b61ce28ea940f1f0d5247d40abe61ae2b91293

SHA256
e44dea262a24df69fd9b50b08d09ae6f8b051137ce0834640c977091a6f9fca8

SHA512
3c2a4e2539933cbeb1d0b3c8ef14f0563675fd53b6ef487c7a5371dfe2ee1932255f91db598a61aaadacd8dc2fe2486a91f586542c52dfc054b22ad843831d1e

Download Submit
C:\Users\Admin\AppData\Local\Temp\_MEI4002\_socket.pyd

Filesize
82KB

MD5
abf998769f3cba685e90fa06e0ec8326

SHA1
daa66047cf22b6be608127f8824e59b30c9026bf

SHA256
62d0493ced6ca33e2fd8141649dd9889c23b2e9afc5fdf56edb4f888c88fb823

SHA512
08c6b3573c596a15accf4936533567415198a0daab5b6e9824b820fd1f078233bbc3791fde6971489e70155f7c33c1242b0b0a3a17fe2ec95b9fadae555ed483

Download Submit
C:\Users\Admin\AppData\Local\Temp\_MEI4002\base_library.zip

Filesize
1.3MB

MD5
18c3f8bf07b4764d340df1d612d28fad

SHA1
fc0e09078527c13597c37dbea39551f72bbe9ae8

SHA256
6e30043dfa5faf9c31bd8fb71778e8e0701275b620696d29ad274846676b7175

SHA512
135b97cd0284424a269c964ed95b06d338814e5e7b2271b065e5eabf56a8af4a213d863dd2a1e93c1425fadb1b20e6c63ffa6e8984156928be4a9a2fbbfd5e93

Download Submit
C:\Users\Admin\AppData\Local\Temp\_MEI4002\cryptography\hazmat\bindings\_rust.pyd

Filesize
7.9MB

MD5
34293b976da366d83c12d8ee05de7b03

SHA1
82b8eb434c26fcc3a5d9673c9b93663c0ff9bf15

SHA256
a2285c3f2f7e63ba8a17ab5d0a302740e6adf7e608e0707a7737c1ec3bd8cecc

SHA512
0807ec7515186f0a989bb667150a84ff3bebcc248625597ba0be3c6f07ad60d70cf8a3f65191436ec16042f446d4248bf92fcd02212e459405948db10f078b8e

Download Submit
C:\Users\Admin\AppData\Local\Temp\_MEI4002\libcrypto-3.dll

Filesize
5.0MB

MD5
123ad0908c76ccba4789c084f7a6b8d0

SHA1
86de58289c8200ed8c1fc51d5f00e38e32c1aad5

SHA256
4e5d5d20d6d31e72ab341c81e97b89e514326c4c861b48638243bdf0918cfa43

SHA512
80fae0533ba9a2f5fa7806e86f0db8b6aab32620dde33b70a3596938b529f3822856de75bddb1b06721f8556ec139d784bc0bb9c8da0d391df2c20a80d33cb04

Download Submit
C:\Users\Admin\AppData\Local\Temp\_MEI4002\libffi-8.dll

Filesize
38KB

MD5
0f8e4992ca92baaf54cc0b43aaccce21

SHA1
c7300975df267b1d6adcbac0ac93fd7b1ab49bd2

SHA256
eff52743773eb550fcc6ce3efc37c85724502233b6b002a35496d828bd7b280a

SHA512
6e1b223462dc124279bfca74fd2c66fe18b368ffbca540c84e82e0f5bcbea0e10cc243975574fa95ace437b9d8b03a446ed5ee0c9b1b094147cefaf704dfe978

Download Submit
C:\Users\Admin\AppData\Local\Temp\_MEI4002\python3.DLL

Filesize
70KB

MD5
ad2c4784c3240063eeaa646fd59be62c

SHA1
5efab563725781ab38a511e3f26e0406d5d46e8d

SHA256
c1de4bfe57dc4a5be8c72c865d617dc39dfd8162fcd2ce1fac9f401cf9efb504

SHA512
c964d4289206d099310bd5299f71a32c643311e0e8445e35ae3179772136d0ca9b75f5271eaf31efc75c055cd438799cef836ed87797589629b0e9f247424676

Download Submit
C:\Users\Admin\AppData\Local\Temp\_MEI4002\python313.dll

Filesize
5.8MB

MD5
3aad23292404a7038eb07ce5a6348256

SHA1
35cac5479699b28549ebe36c1d064bfb703f0857

SHA256
78b1dd211c0e66a0603df48da2c9b67a915ab3258701b9285d3faa255ed8dc25

SHA512
f5b6ef04e744d2c98c1ef9402d7a8ce5cda3b008837cf2c37a8b6d0cd1b188ca46585a40b2db7acf019f67e6ced59eff5bc86e1aaf48d3c3b62fecf37f3aec6b

Download Submit
C:\Users\Admin\AppData\Local\Temp\_MEI4002\select.pyd

Filesize
31KB

MD5
62fe3761d24b53d98cc9b0cbbd0feb7c

SHA1
317344c9edf2fcfa2b9bc248a18f6e6acedafffb

SHA256
81f124b01a85882e362a42e94a13c0eff2f4ccd72d461821dc5457a789554413

SHA512
a1d3da17937087af4e5980d908ed645d4ea1b5f3ebfab5c572417df064707cae1372b331c7096cc8e2e041db9315172806d3bc4bb425c6bb4d2fa55e00524881

Download Submit
C:\Users\Admin\AppData\Local\Temp\_MEI4002\unicodedata.pyd

Filesize
695KB

MD5
43b8b61debbc6dd93124a00ddd922d8c

SHA1
5dee63d250ac6233aac7e462eee65c5326224f01

SHA256
3f462ee6e7743a87e5791181936539642e3761c55de3de980a125f91fe21f123

SHA512
dd4791045cf887e6722feae4442c38e641f19ec994a8eaf7667e9df9ea84378d6d718caf3390f92443f6bbf39840c150121bb6fa896c4badd3f78f1ffe4de19d

Download Submit
memory/4636-55-0x00000000748EE000-0x00000000748EF000-memory.dmp

Filesize
4KB

Download
memory/4636-56-0x0000000000BB0000-0x0000000000BC2000-memory.dmp

Filesize
72KB

Download
memory/4636-64-0x00000000748E0000-0x0000000075091000-memory.dmp

Filesize
7.7MB

Download
memory/4636-65-0x00000000748EE000-0x00000000748EF000-memory.dmp

Filesize
4KB

Download
memory/4636-66-0x00000000748E0000-0x0000000075091000-memory.dmp

Filesize
7.7MB

Download