asyncrat | 1858aba49bc3b6bc7df3c70d3e70f3c14c747d5b267d2be366220c3c300219ca

General

Target

761e34c09293f429b26fa9b08a942746_JaffaCakes118.exe
Size

512KB
MD5

761e34c09293f429b26fa9b08a942746
SHA1

f9e8888673dd7465dcf633c6b711d99f4bd9f678
SHA256

1858aba49bc3b6bc7df3c70d3e70f3c14c747d5b267d2be366220c3c300219ca
SHA512

2412b933d2544561bb3fd567e2c0d369a6c3532c7cdceacace19b0d86477e7ea0b947a3de63a7ec2e9589c041c457ecdb00abae0e378e6a1060faaeb5cac53c3
SSDEEP

12288:/yHANgm25FmSEd5xO3onVmpOTq5rBByho7:/bgiS5NE

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

severdops.ddns.net:6204

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2712 set thread context of 2852	2712	761e34c09293f429b26fa9b08a942746_JaffaCakes118.exe	32

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	761e34c09293f429b26fa9b08a942746_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	761e34c09293f429b26fa9b08a942746_JaffaCakes118.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
2060	schtasks.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2712 wrote to memory of 2060	2712	761e34c09293f429b26fa9b08a942746_JaffaCakes118.exe	30
PID 2712 wrote to memory of 2060	2712	761e34c09293f429b26fa9b08a942746_JaffaCakes118.exe	30
PID 2712 wrote to memory of 2060	2712	761e34c09293f429b26fa9b08a942746_JaffaCakes118.exe	30
PID 2712 wrote to memory of 2060	2712	761e34c09293f429b26fa9b08a942746_JaffaCakes118.exe	30
PID 2712 wrote to memory of 2852	2712	761e34c09293f429b26fa9b08a942746_JaffaCakes118.exe	32
PID 2712 wrote to memory of 2852	2712	761e34c09293f429b26fa9b08a942746_JaffaCakes118.exe	32
PID 2712 wrote to memory of 2852	2712	761e34c09293f429b26fa9b08a942746_JaffaCakes118.exe	32
PID 2712 wrote to memory of 2852	2712	761e34c09293f429b26fa9b08a942746_JaffaCakes118.exe	32
PID 2712 wrote to memory of 2852	2712	761e34c09293f429b26fa9b08a942746_JaffaCakes118.exe	32
PID 2712 wrote to memory of 2852	2712	761e34c09293f429b26fa9b08a942746_JaffaCakes118.exe	32
PID 2712 wrote to memory of 2852	2712	761e34c09293f429b26fa9b08a942746_JaffaCakes118.exe	32
PID 2712 wrote to memory of 2852	2712	761e34c09293f429b26fa9b08a942746_JaffaCakes118.exe	32
PID 2712 wrote to memory of 2852	2712	761e34c09293f429b26fa9b08a942746_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\761e34c09293f429b26fa9b08a942746_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\761e34c09293f429b26fa9b08a942746_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2712
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\KZqUDYcny" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3350.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2060
- C:\Users\Admin\AppData\Local\Temp\761e34c09293f429b26fa9b08a942746_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\761e34c09293f429b26fa9b08a942746_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2852

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

System Information Discovery

1

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\tmp3350.tmp

Filesize
1KB

MD5
db98c5e9e9dd7da4636cc36b931a6ca1

SHA1
08183fec90e1143a00d2be499f551e53f2353aed

SHA256
5686b018334065cf7cd21d5c28b0a32021194880247edf2f184c5b3e5663bdcc

SHA512
01d8ffa539c2043f5b52f6a713fd4de25204b407f4aff378a75b27168c14287d90838a9ecaed0014c217425e65fea5106f8811ab2260f4973cffb3d149eb145a

Download Submit
memory/2712-0-0x0000000073CCE000-0x0000000073CCF000-memory.dmp

Filesize
4KB

Download
memory/2712-1-0x0000000000E50000-0x0000000000ED6000-memory.dmp

Filesize
536KB

Download
memory/2712-2-0x0000000073CC0000-0x00000000743AE000-memory.dmp

Filesize
6.9MB

Download
memory/2712-3-0x0000000000450000-0x000000000045A000-memory.dmp

Filesize
40KB

Download
memory/2712-4-0x0000000073CCE000-0x0000000073CCF000-memory.dmp

Filesize
4KB

Download
memory/2712-5-0x0000000073CC0000-0x00000000743AE000-memory.dmp

Filesize
6.9MB

Download
memory/2712-6-0x0000000000D20000-0x0000000000D60000-memory.dmp

Filesize
256KB

Download
memory/2712-24-0x0000000073CC0000-0x00000000743AE000-memory.dmp

Filesize
6.9MB

Download
memory/2852-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2852-18-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2852-15-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2852-14-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2852-13-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2852-23-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2852-20-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2852-12-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2852-25-0x0000000073CC0000-0x00000000743AE000-memory.dmp

Filesize
6.9MB

Download
memory/2852-26-0x0000000073CC0000-0x00000000743AE000-memory.dmp

Filesize
6.9MB

Download
memory/2852-27-0x0000000073CC0000-0x00000000743AE000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads