asyncrat | f98a607f7aed8a5dd5950711a576fede3326857b4254de991abaf9a70e77be7b

Analysis

max time kernel
122s
max time network
146s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
09-01-2025 00:15

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General

Target

a7f9f165cd238ccbe2ca5803fcd3209d.exe
Size

162KB
MD5

a7f9f165cd238ccbe2ca5803fcd3209d
SHA1

1c145bc3fa28fa807d3c831de524b5806e0de334
SHA256

f98a607f7aed8a5dd5950711a576fede3326857b4254de991abaf9a70e77be7b
SHA512

f352947e7e3f9fd7157539c2890ffbfce6a933af4df047e47661c7be8e66afe7ba994910174641915c1ff6626fbaa897c020f662ac723bc8606cd0100a613ed7
SSDEEP

3072:OHUWEdcWRJy1kI4E/BaSv9krW5xpvp4mKawJ1X3zsIW0sk0Y1:OHUWEdcWRYcEUS7pviIAs19

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

144.91.79.54:32769

Mutex

E9IiT5JzUivo

Attributes

delay
3
install
false
install_file
TestFile.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
behavioral1/files/0x0008000000019227-7.dat	family_asyncrat

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a7f9f165cd238ccbe2ca5803fcd3209d.exe	a7f9f165cd238ccbe2ca5803fcd3209d.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a7f9f165cd238ccbe2ca5803fcd3209d.exe	a7f9f165cd238ccbe2ca5803fcd3209d.exe

Executes dropped EXE 1 IoCs

pid	Process
1268	tempfile

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	tempfile

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1268	tempfile

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2348 wrote to memory of 1268	2348	a7f9f165cd238ccbe2ca5803fcd3209d.exe	31
PID 2348 wrote to memory of 1268	2348	a7f9f165cd238ccbe2ca5803fcd3209d.exe	31
PID 2348 wrote to memory of 1268	2348	a7f9f165cd238ccbe2ca5803fcd3209d.exe	31
PID 2348 wrote to memory of 1268	2348	a7f9f165cd238ccbe2ca5803fcd3209d.exe	31

C:\Users\Admin\AppData\Local\Temp\a7f9f165cd238ccbe2ca5803fcd3209d.exe
"C:\Users\Admin\AppData\Local\Temp\a7f9f165cd238ccbe2ca5803fcd3209d.exe"
1⤵
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:2348
- C:\Users\Admin\AppData\Local\Temp\tempfile
  "C:\Users\Admin\AppData\Local\Temp\tempfile"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:1268

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\CabC380.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tempfile

Filesize
45KB

MD5
e00a1ab434452fd6f77c941c09f257d6

SHA1
19e5bb008a1c4560c60f503e03c51a5934db1015

SHA256
da22ab3197ce1c6b427ecd1111166020c8feba35d4153296d439f56c7b4502e8

SHA512
d3ad25eed77e5e55c44c623fa2a48e9c3705da0d14696a4d9a6297d471eb3e594f6e5cf4871f3a9b258c274effc44936160bd06420152d7bbd53cc89b7420ea2

Download Submit
memory/1268-9-0x0000000074A8E000-0x0000000074A8F000-memory.dmp

Filesize
4KB

Download
memory/1268-10-0x0000000000CC0000-0x0000000000CD2000-memory.dmp

Filesize
72KB

Download
memory/1268-11-0x0000000074A80000-0x000000007516E000-memory.dmp

Filesize
6.9MB

Download
memory/1268-30-0x0000000074A8E000-0x0000000074A8F000-memory.dmp

Filesize
4KB

Download
memory/1268-31-0x0000000074A80000-0x000000007516E000-memory.dmp

Filesize
6.9MB

Download
memory/2348-0-0x000007FEF6083000-0x000007FEF6084000-memory.dmp

Filesize
4KB

Download
memory/2348-1-0x0000000000010000-0x000000000003E000-memory.dmp

Filesize
184KB

Download
memory/2348-8-0x000007FEF6080000-0x000007FEF6A6C000-memory.dmp

Filesize
9.9MB

Download
memory/2348-28-0x000007FEF6083000-0x000007FEF6084000-memory.dmp

Filesize
4KB

Download
memory/2348-29-0x000007FEF6080000-0x000007FEF6A6C000-memory.dmp

Filesize
9.9MB

Download