asyncrat | 347586f7facf4ef5fcb456f6589d65cb3167a7fa4379740ff03b2c861d8cf364

General

Target

gggg.exe
Size

52KB
MD5

fb6d592ff07d0e26a291b3e78c1ce139
SHA1

e5e82e613372b0795f8347ac643e954f0c514df2
SHA256

347586f7facf4ef5fcb456f6589d65cb3167a7fa4379740ff03b2c861d8cf364
SHA512

5db5797fcb1a6c2cbd2e2f4aaf2a5fd47f693116583596292531b73a36eabc8517ee7bc1d8cb5a999f45a5ca91152f0b3a810ec00ce35c8283f02d1c5e287779
SSDEEP

1536:2uu91TwSb2nth5csqQXb6HoTUdHN0QdH/:2uuDTwSb2tQsqwb6I4dtl9/

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

127.0.0.1:8808

10.59.25.45:8808

Mutex

KxaqMLMZrN62

Attributes

delay
3
install
true
install_file
Maple.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
behavioral2/files/0x0008000000023caf-11.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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	gggg.exe

Executes dropped EXE 1 IoCs

pid	Process
4816	Maple.exe

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 6 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Maple.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gggg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4120	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
3384	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
4732	gggg.exe
4732	gggg.exe
4732	gggg.exe
4732	gggg.exe
4732	gggg.exe
4732	gggg.exe
4732	gggg.exe
4732	gggg.exe
4732	gggg.exe
4732	gggg.exe
4732	gggg.exe
4732	gggg.exe
4732	gggg.exe
4732	gggg.exe
4732	gggg.exe
4732	gggg.exe
4732	gggg.exe
4732	gggg.exe
4732	gggg.exe
4732	gggg.exe
4732	gggg.exe
4732	gggg.exe
4732	gggg.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4732	gggg.exe
Token: SeDebugPrivilege	4816	Maple.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4732 wrote to memory of 1844	4732	gggg.exe	84
PID 4732 wrote to memory of 1844	4732	gggg.exe	84
PID 4732 wrote to memory of 1844	4732	gggg.exe	84
PID 4732 wrote to memory of 808	4732	gggg.exe	86
PID 4732 wrote to memory of 808	4732	gggg.exe	86
PID 4732 wrote to memory of 808	4732	gggg.exe	86
PID 1844 wrote to memory of 3384	1844	cmd.exe	88
PID 1844 wrote to memory of 3384	1844	cmd.exe	88
PID 1844 wrote to memory of 3384	1844	cmd.exe	88
PID 808 wrote to memory of 4120	808	cmd.exe	89
PID 808 wrote to memory of 4120	808	cmd.exe	89
PID 808 wrote to memory of 4120	808	cmd.exe	89
PID 808 wrote to memory of 4816	808	cmd.exe	90
PID 808 wrote to memory of 4816	808	cmd.exe	90
PID 808 wrote to memory of 4816	808	cmd.exe	90

C:\Users\Admin\AppData\Local\Temp\gggg.exe
"C:\Users\Admin\AppData\Local\Temp\gggg.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4732
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Maple" /tr '"C:\Users\Admin\AppData\Roaming\Maple.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1844
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Maple" /tr '"C:\Users\Admin\AppData\Roaming\Maple.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3384
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpC6CA.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:808
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4120
- - C:\Users\Admin\AppData\Roaming\Maple.exe
    "C:\Users\Admin\AppData\Roaming\Maple.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:4816

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

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

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpC6CA.tmp.bat

Filesize
149B

MD5
31c21117cbfb23fba603c5ef1550bd16

SHA1
0419cffbfc36a098723d31bdcc738770aca023f6

SHA256
1793dedf7fd965b47c36b650d3153e6b78b3fcd4d428bcbf88770d11d7a93a1c

SHA512
eb5e192f6805b75f57b4167e175b631601ef1d46b1457fff334ed1d00d8704ad080aca26a16ef44814a9a9b38a41e68d29c83be7663297117aca73fc6fc31398

Download Submit
C:\Users\Admin\AppData\Roaming\Maple.exe

Filesize
52KB

MD5
fb6d592ff07d0e26a291b3e78c1ce139

SHA1
e5e82e613372b0795f8347ac643e954f0c514df2

SHA256
347586f7facf4ef5fcb456f6589d65cb3167a7fa4379740ff03b2c861d8cf364

SHA512
5db5797fcb1a6c2cbd2e2f4aaf2a5fd47f693116583596292531b73a36eabc8517ee7bc1d8cb5a999f45a5ca91152f0b3a810ec00ce35c8283f02d1c5e287779

Download Submit
memory/4732-0-0x0000000074FCE000-0x0000000074FCF000-memory.dmp

Filesize
4KB

Download
memory/4732-1-0x0000000000680000-0x0000000000692000-memory.dmp

Filesize
72KB

Download
memory/4732-2-0x0000000074FC0000-0x0000000075770000-memory.dmp

Filesize
7.7MB

Download
memory/4732-3-0x0000000005050000-0x00000000050EC000-memory.dmp

Filesize
624KB

Download
memory/4732-8-0x0000000074FC0000-0x0000000075770000-memory.dmp

Filesize
7.7MB

Download
memory/4816-13-0x0000000074FC0000-0x0000000075770000-memory.dmp

Filesize
7.7MB

Download
memory/4816-14-0x0000000074FC0000-0x0000000075770000-memory.dmp

Filesize
7.7MB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads