asyncrat | aaf00e1348307208d3415f629193cdf125171170a32a8cdeb140e8373d079714

General

Target

a52d0c834a09cc7efdfe374ee2f4f90e_JaffaCakes118.exe
Size

380KB
MD5

a52d0c834a09cc7efdfe374ee2f4f90e
SHA1

5957da57c40aef542a52d07df04501f74b631bdb
SHA256

aaf00e1348307208d3415f629193cdf125171170a32a8cdeb140e8373d079714
SHA512

e99e1429dcac7398473cecb4a63cce2ac1b0bccb2f4dd284e38c1ca16dac21d0d6552c886604c87fe79590274ea821734faf874639f873883a75e0d4d5a247e8
SSDEEP

6144:hBUl1fcf0Tv2sbP6mSPmFFLmlrqQroarJ0zUWZyzhX:Q79vnz6mSQYxkarJaZyzh

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

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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	a52d0c834a09cc7efdfe374ee2f4f90e_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1212 set thread context of 1416	1212	a52d0c834a09cc7efdfe374ee2f4f90e_JaffaCakes118.exe	100

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	a52d0c834a09cc7efdfe374ee2f4f90e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a52d0c834a09cc7efdfe374ee2f4f90e_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
1644	schtasks.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1212 wrote to memory of 1644	1212	a52d0c834a09cc7efdfe374ee2f4f90e_JaffaCakes118.exe	98
PID 1212 wrote to memory of 1644	1212	a52d0c834a09cc7efdfe374ee2f4f90e_JaffaCakes118.exe	98
PID 1212 wrote to memory of 1644	1212	a52d0c834a09cc7efdfe374ee2f4f90e_JaffaCakes118.exe	98
PID 1212 wrote to memory of 1416	1212	a52d0c834a09cc7efdfe374ee2f4f90e_JaffaCakes118.exe	100
PID 1212 wrote to memory of 1416	1212	a52d0c834a09cc7efdfe374ee2f4f90e_JaffaCakes118.exe	100
PID 1212 wrote to memory of 1416	1212	a52d0c834a09cc7efdfe374ee2f4f90e_JaffaCakes118.exe	100
PID 1212 wrote to memory of 1416	1212	a52d0c834a09cc7efdfe374ee2f4f90e_JaffaCakes118.exe	100
PID 1212 wrote to memory of 1416	1212	a52d0c834a09cc7efdfe374ee2f4f90e_JaffaCakes118.exe	100
PID 1212 wrote to memory of 1416	1212	a52d0c834a09cc7efdfe374ee2f4f90e_JaffaCakes118.exe	100
PID 1212 wrote to memory of 1416	1212	a52d0c834a09cc7efdfe374ee2f4f90e_JaffaCakes118.exe	100
PID 1212 wrote to memory of 1416	1212	a52d0c834a09cc7efdfe374ee2f4f90e_JaffaCakes118.exe	100

C:\Users\Admin\AppData\Local\Temp\a52d0c834a09cc7efdfe374ee2f4f90e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a52d0c834a09cc7efdfe374ee2f4f90e_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1212
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\eKLGqzBRYkTEB" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE059.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1644
- C:\Users\Admin\AppData\Local\Temp\a52d0c834a09cc7efdfe374ee2f4f90e_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\a52d0c834a09cc7efdfe374ee2f4f90e_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1416

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\Microsoft\CLR_v4.0_32\UsageLogs\a52d0c834a09cc7efdfe374ee2f4f90e_JaffaCakes118.exe.log

Filesize
1KB

MD5
17573558c4e714f606f997e5157afaac

SHA1
13e16e9415ceef429aaf124139671ebeca09ed23

SHA256
c18db6aecad2436da4a63ff26af4e3a337cca48f01c21b8db494fe5ccc60e553

SHA512
f4edf13f05a0d142e4dd42802098c8c44988ee8869621a62c2b565a77c9a95857f636583ff8d6d9baa366603d98b9bfbf1fc75bc6f9f8f83c80cb1215b2941cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpE059.tmp

Filesize
1KB

MD5
82ba8369cc154369aa6315169def2479

SHA1
8f0c08c4ee58f3b289a31419f5d855b8b064429e

SHA256
01c0f05fc23d635a24077249f403b82f73c75a101294887b04ce6b4e79ea34ea

SHA512
12a82028c2c901ca842b8e4cbf15342b870c71b9cb800aeda6b75b738fcb3e7fbdb08d8e2c2c57b0da629387a6951627400097b96d4ddabf0d7da338523bcf75

Download Submit
memory/1212-5-0x0000000004EE0000-0x0000000004EEA000-memory.dmp

Filesize
40KB

Download
memory/1212-11-0x0000000000D20000-0x0000000000D60000-memory.dmp

Filesize
256KB

Download
memory/1212-4-0x0000000004F80000-0x0000000005012000-memory.dmp

Filesize
584KB

Download
memory/1212-0-0x000000007480E000-0x000000007480F000-memory.dmp

Filesize
4KB

Download
memory/1212-6-0x0000000005020000-0x0000000005076000-memory.dmp

Filesize
344KB

Download
memory/1212-7-0x0000000074800000-0x0000000074FB0000-memory.dmp

Filesize
7.7MB

Download
memory/1212-8-0x00000000050E0000-0x00000000050EA000-memory.dmp

Filesize
40KB

Download
memory/1212-9-0x000000007480E000-0x000000007480F000-memory.dmp

Filesize
4KB

Download
memory/1212-10-0x0000000074800000-0x0000000074FB0000-memory.dmp

Filesize
7.7MB

Download
memory/1212-3-0x0000000005490000-0x0000000005A34000-memory.dmp

Filesize
5.6MB

Download
memory/1212-2-0x0000000004E40000-0x0000000004EDC000-memory.dmp

Filesize
624KB

Download
memory/1212-1-0x0000000000420000-0x0000000000484000-memory.dmp

Filesize
400KB

Download
memory/1212-20-0x0000000074800000-0x0000000074FB0000-memory.dmp

Filesize
7.7MB

Download
memory/1416-17-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1416-21-0x0000000074800000-0x0000000074FB0000-memory.dmp

Filesize
7.7MB

Download
memory/1416-22-0x0000000074800000-0x0000000074FB0000-memory.dmp

Filesize
7.7MB

Download
memory/1416-23-0x0000000074800000-0x0000000074FB0000-memory.dmp

Filesize
7.7MB

Download
memory/1416-24-0x0000000074800000-0x0000000074FB0000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads