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/0x0010000000023baa-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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	gggg.exe

Executes dropped EXE 1 IoCs

pid	Process
764	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	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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1172	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
4692	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
3452	gggg.exe
3452	gggg.exe
3452	gggg.exe
3452	gggg.exe
3452	gggg.exe
3452	gggg.exe
3452	gggg.exe
3452	gggg.exe
3452	gggg.exe
3452	gggg.exe
3452	gggg.exe
3452	gggg.exe
3452	gggg.exe
3452	gggg.exe
3452	gggg.exe
3452	gggg.exe
3452	gggg.exe
3452	gggg.exe
3452	gggg.exe
3452	gggg.exe
3452	gggg.exe
3452	gggg.exe
3452	gggg.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3452	gggg.exe
Token: SeDebugPrivilege	764	Maple.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3452 wrote to memory of 4228	3452	gggg.exe	84
PID 3452 wrote to memory of 4228	3452	gggg.exe	84
PID 3452 wrote to memory of 4228	3452	gggg.exe	84
PID 3452 wrote to memory of 1748	3452	gggg.exe	86
PID 3452 wrote to memory of 1748	3452	gggg.exe	86
PID 3452 wrote to memory of 1748	3452	gggg.exe	86
PID 1748 wrote to memory of 1172	1748	cmd.exe	88
PID 1748 wrote to memory of 1172	1748	cmd.exe	88
PID 1748 wrote to memory of 1172	1748	cmd.exe	88
PID 4228 wrote to memory of 4692	4228	cmd.exe	89
PID 4228 wrote to memory of 4692	4228	cmd.exe	89
PID 4228 wrote to memory of 4692	4228	cmd.exe	89
PID 1748 wrote to memory of 764	1748	cmd.exe	90
PID 1748 wrote to memory of 764	1748	cmd.exe	90
PID 1748 wrote to memory of 764	1748	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:3452
- 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:4228
- - 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:4692
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9F5D.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1748
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:1172
- - 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:764

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\tmp9F5D.tmp.bat

Filesize
149B

MD5
c32fa415e1204b12d358daa5972cd6de

SHA1
e9a7d33934648fe903c1a83850ca0808509a89cf

SHA256
0b2711ca659a2e2dcd3ffea73367c737dfc1c0d109f7e121fe43ce86c62bfb1d

SHA512
9a04f817f5394a49f0e08ec6c054c70a5291791e2bb56ee5bcd12dd771cb67d179266536b3dc4e8133bf5999723f91cbb5aa2c4c95273459cb955dcd2e9a5e52

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

Filesize
52KB

MD5
fb6d592ff07d0e26a291b3e78c1ce139

SHA1
e5e82e613372b0795f8347ac643e954f0c514df2

SHA256
347586f7facf4ef5fcb456f6589d65cb3167a7fa4379740ff03b2c861d8cf364

SHA512
5db5797fcb1a6c2cbd2e2f4aaf2a5fd47f693116583596292531b73a36eabc8517ee7bc1d8cb5a999f45a5ca91152f0b3a810ec00ce35c8283f02d1c5e287779

Download Submit
memory/764-13-0x0000000074DA0000-0x0000000075550000-memory.dmp

Filesize
7.7MB

Download
memory/764-14-0x0000000074DA0000-0x0000000075550000-memory.dmp

Filesize
7.7MB

Download
memory/3452-0-0x0000000074DAE000-0x0000000074DAF000-memory.dmp

Filesize
4KB

Download
memory/3452-1-0x00000000003B0000-0x00000000003C2000-memory.dmp

Filesize
72KB

Download
memory/3452-2-0x0000000074DA0000-0x0000000075550000-memory.dmp

Filesize
7.7MB

Download
memory/3452-3-0x0000000004DE0000-0x0000000004E7C000-memory.dmp

Filesize
624KB

Download
memory/3452-8-0x0000000074DA0000-0x0000000075550000-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