asyncrat | dfe1f7602fc303b7a0f7427deca31f31aa44493ef8d129a631ce0ad770b9690b

General

Target

JaffaCakes118_f44d9910d716f5d7fdf542e25ca41b20.exe
Size

491KB
MD5

f44d9910d716f5d7fdf542e25ca41b20
SHA1

f7dc32448961dd681c73594952ef881bbf36c7e0
SHA256

dfe1f7602fc303b7a0f7427deca31f31aa44493ef8d129a631ce0ad770b9690b
SHA512

4ede162be9f5a925513a2e9bf458cfe6db4ecb64906dc12008f2ab9fc93e92485e80fb4ed779e87ca4509abd5fdd4493e960fe25e7e0170eaea0e41c35a5af0b
SSDEEP

12288:byrjnZPxkyx8gmoYSZtIEOZU8HocYnKrTSO:baPx9dtIEOZU+ochG

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

202.55.133.118:5200

Mutex

DcRatMutex_qwqdanchun

Attributes

delay
1
install
false
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

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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	JaffaCakes118_f44d9910d716f5d7fdf542e25ca41b20.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4644 set thread context of 2212	4644	JaffaCakes118_f44d9910d716f5d7fdf542e25ca41b20.exe	101

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 3 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	JaffaCakes118_f44d9910d716f5d7fdf542e25ca41b20.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.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
4212	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4644	JaffaCakes118_f44d9910d716f5d7fdf542e25ca41b20.exe
4644	JaffaCakes118_f44d9910d716f5d7fdf542e25ca41b20.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4644	JaffaCakes118_f44d9910d716f5d7fdf542e25ca41b20.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4644 wrote to memory of 4212	4644	JaffaCakes118_f44d9910d716f5d7fdf542e25ca41b20.exe	100
PID 4644 wrote to memory of 4212	4644	JaffaCakes118_f44d9910d716f5d7fdf542e25ca41b20.exe	100
PID 4644 wrote to memory of 4212	4644	JaffaCakes118_f44d9910d716f5d7fdf542e25ca41b20.exe	100
PID 4644 wrote to memory of 2212	4644	JaffaCakes118_f44d9910d716f5d7fdf542e25ca41b20.exe	101
PID 4644 wrote to memory of 2212	4644	JaffaCakes118_f44d9910d716f5d7fdf542e25ca41b20.exe	101
PID 4644 wrote to memory of 2212	4644	JaffaCakes118_f44d9910d716f5d7fdf542e25ca41b20.exe	101
PID 4644 wrote to memory of 2212	4644	JaffaCakes118_f44d9910d716f5d7fdf542e25ca41b20.exe	101
PID 4644 wrote to memory of 2212	4644	JaffaCakes118_f44d9910d716f5d7fdf542e25ca41b20.exe	101
PID 4644 wrote to memory of 2212	4644	JaffaCakes118_f44d9910d716f5d7fdf542e25ca41b20.exe	101
PID 4644 wrote to memory of 2212	4644	JaffaCakes118_f44d9910d716f5d7fdf542e25ca41b20.exe	101
PID 4644 wrote to memory of 2212	4644	JaffaCakes118_f44d9910d716f5d7fdf542e25ca41b20.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f44d9910d716f5d7fdf542e25ca41b20.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f44d9910d716f5d7fdf542e25ca41b20.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4644
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\yywxphKidVZnL" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1860.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:4212
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2212

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/2212-16-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2212-21-0x0000000074790000-0x0000000074F40000-memory.dmp

Filesize
7.7MB

Download
memory/2212-20-0x0000000074790000-0x0000000074F40000-memory.dmp

Filesize
7.7MB

Download
memory/2212-18-0x0000000074790000-0x0000000074F40000-memory.dmp

Filesize
7.7MB

Download
memory/4644-4-0x0000000074790000-0x0000000074F40000-memory.dmp

Filesize
7.7MB

Download
memory/4644-5-0x0000000004F20000-0x0000000004F2A000-memory.dmp

Filesize
40KB

Download
memory/4644-6-0x0000000005200000-0x0000000005216000-memory.dmp

Filesize
88KB

Download
memory/4644-7-0x0000000006270000-0x000000000630C000-memory.dmp

Filesize
624KB

Download
memory/4644-8-0x000000007479E000-0x000000007479F000-memory.dmp

Filesize
4KB

Download
memory/4644-9-0x0000000074790000-0x0000000074F40000-memory.dmp

Filesize
7.7MB

Download
memory/4644-10-0x0000000000910000-0x0000000000946000-memory.dmp

Filesize
216KB

Download
memory/4644-0-0x000000007479E000-0x000000007479F000-memory.dmp

Filesize
4KB

Download
memory/4644-3-0x0000000004E60000-0x0000000004EF2000-memory.dmp

Filesize
584KB

Download
memory/4644-19-0x0000000074790000-0x0000000074F40000-memory.dmp

Filesize
7.7MB

Download
memory/4644-2-0x0000000005520000-0x0000000005AC4000-memory.dmp

Filesize
5.6MB

Download
memory/4644-1-0x0000000000440000-0x00000000004C2000-memory.dmp

Filesize
520KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads