asyncrat | ed77428124df77e71916701501c30ad35e7d3ee17572aa705e989f8b786cbe20

General

Target

90a0e47f0bd69bdade317bdf239a86f7_JaffaCakes118.exe
Size

822KB
MD5

90a0e47f0bd69bdade317bdf239a86f7
SHA1

e1378bf432db9c5b4453cd62bf35f99c08ab0a65
SHA256

ed77428124df77e71916701501c30ad35e7d3ee17572aa705e989f8b786cbe20
SHA512

df211dc93208748966ed90f960be15644d1c1074657b9c1cc1c037839163444e7e5d0e00c194a5ea6863467ecbef5fa4074bffde4781c0d231c1fa16b934f876
SSDEEP

6144:upCYmT8DUjwtcTtg5tp83CBSS5UkX7QxKUk8PxLgiBb5e4Fq/OIhqwyQR+YVd4O3:brS5UknU/giBb5ZF1VB9O+m

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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	90a0e47f0bd69bdade317bdf239a86f7_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1840 set thread context of 2880	1840	90a0e47f0bd69bdade317bdf239a86f7_JaffaCakes118.exe	108

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	90a0e47f0bd69bdade317bdf239a86f7_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	90a0e47f0bd69bdade317bdf239a86f7_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
4656	schtasks.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1840 wrote to memory of 4656	1840	90a0e47f0bd69bdade317bdf239a86f7_JaffaCakes118.exe	106
PID 1840 wrote to memory of 4656	1840	90a0e47f0bd69bdade317bdf239a86f7_JaffaCakes118.exe	106
PID 1840 wrote to memory of 4656	1840	90a0e47f0bd69bdade317bdf239a86f7_JaffaCakes118.exe	106
PID 1840 wrote to memory of 2880	1840	90a0e47f0bd69bdade317bdf239a86f7_JaffaCakes118.exe	108
PID 1840 wrote to memory of 2880	1840	90a0e47f0bd69bdade317bdf239a86f7_JaffaCakes118.exe	108
PID 1840 wrote to memory of 2880	1840	90a0e47f0bd69bdade317bdf239a86f7_JaffaCakes118.exe	108
PID 1840 wrote to memory of 2880	1840	90a0e47f0bd69bdade317bdf239a86f7_JaffaCakes118.exe	108
PID 1840 wrote to memory of 2880	1840	90a0e47f0bd69bdade317bdf239a86f7_JaffaCakes118.exe	108
PID 1840 wrote to memory of 2880	1840	90a0e47f0bd69bdade317bdf239a86f7_JaffaCakes118.exe	108
PID 1840 wrote to memory of 2880	1840	90a0e47f0bd69bdade317bdf239a86f7_JaffaCakes118.exe	108
PID 1840 wrote to memory of 2880	1840	90a0e47f0bd69bdade317bdf239a86f7_JaffaCakes118.exe	108

C:\Users\Admin\AppData\Local\Temp\90a0e47f0bd69bdade317bdf239a86f7_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\90a0e47f0bd69bdade317bdf239a86f7_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1840
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\KAOQIrN" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4CBF.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:4656
- C:\Users\Admin\AppData\Local\Temp\90a0e47f0bd69bdade317bdf239a86f7_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\90a0e47f0bd69bdade317bdf239a86f7_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2880

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\90a0e47f0bd69bdade317bdf239a86f7_JaffaCakes118.exe.log

Filesize
1KB

MD5
17573558c4e714f606f997e5157afaac

SHA1
13e16e9415ceef429aaf124139671ebeca09ed23

SHA256
c18db6aecad2436da4a63ff26af4e3a337cca48f01c21b8db494fe5ccc60e553

SHA512
f4edf13f05a0d142e4dd42802098c8c44988ee8869621a62c2b565a77c9a95857f636583ff8d6d9baa366603d98b9bfbf1fc75bc6f9f8f83c80cb1215b2941cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp4CBF.tmp

Filesize
1KB

MD5
fc5e8c645ec2577b66b298d5088eb319

SHA1
aaeaced27195b9771b9eeb5cbea8a442cd69bc64

SHA256
79086f00c2ed2590a01942ff54766fcaf67d201ea0efa7da22ba482b85da65c6

SHA512
ce9271c5b8931a7872a89db98cfc1b50905fe78c4c7c50dd8f3aa5ca69ab571cbc11bc6f0a12cd91a13e65acae38bb8e11a427709fc6faef06ca41d28f79e45a

Download Submit
memory/1840-4-0x0000000004DD0000-0x0000000004E62000-memory.dmp

Filesize
584KB

Download
memory/1840-11-0x0000000000BA0000-0x0000000000BE0000-memory.dmp

Filesize
256KB

Download
memory/1840-0-0x000000007444E000-0x000000007444F000-memory.dmp

Filesize
4KB

Download
memory/1840-5-0x0000000004CE0000-0x0000000004CEA000-memory.dmp

Filesize
40KB

Download
memory/1840-6-0x0000000004FD0000-0x0000000005026000-memory.dmp

Filesize
344KB

Download
memory/1840-7-0x0000000074440000-0x0000000074BF0000-memory.dmp

Filesize
7.7MB

Download
memory/1840-8-0x0000000004FB0000-0x0000000004FBA000-memory.dmp

Filesize
40KB

Download
memory/1840-9-0x000000007444E000-0x000000007444F000-memory.dmp

Filesize
4KB

Download
memory/1840-10-0x0000000074440000-0x0000000074BF0000-memory.dmp

Filesize
7.7MB

Download
memory/1840-3-0x0000000005380000-0x0000000005924000-memory.dmp

Filesize
5.6MB

Download
memory/1840-2-0x0000000004D30000-0x0000000004DCC000-memory.dmp

Filesize
624KB

Download
memory/1840-20-0x0000000074440000-0x0000000074BF0000-memory.dmp

Filesize
7.7MB

Download
memory/1840-1-0x0000000000240000-0x0000000000314000-memory.dmp

Filesize
848KB

Download
memory/2880-17-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2880-21-0x0000000074440000-0x0000000074BF0000-memory.dmp

Filesize
7.7MB

Download
memory/2880-22-0x0000000074440000-0x0000000074BF0000-memory.dmp

Filesize
7.7MB

Download
memory/2880-23-0x0000000074440000-0x0000000074BF0000-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