asyncrat | 99f3be344f93a5d487c49260f2636602c44930ff7c5fea908b3ccd59fbe5b8c1

General

Target

8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe
Size

9.0MB
MD5

8b1ccce8f40669f2435c69ff9325694a
SHA1

4ac0286ca055acb1761ad83d1ee806e95cf0e04e
SHA256

99f3be344f93a5d487c49260f2636602c44930ff7c5fea908b3ccd59fbe5b8c1
SHA512

3e451d9b7cf612579989ad1f0026cfc15eb7565851189164bb6665a8942f873f064e7882ab1d1a82c5f3701d4c5ebccf9d94fcc215a7ef0022642fbc8fee0f74
SSDEEP

196608:CI0tHoI0tHoI0tHoI0tHoI0tHoI0tHoI0tHoI0tH:Cqqqqqqq

Score

10^/10

asyncrat discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.6B

C2

rony.ooguy.com:6606

rony.ooguy.com:7707

rony.ooguy.com:8808

Mutex

eekldwatyqsu

Attributes

delay
95
install
true
install_file
ccleanerr.exe
install_folder
%AppData%

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/memory/636-9-0x0000000009BB0000-0x0000000009BC2000-memory.dmp	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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
3520	ccleanerr.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
18	drive.google.com
19	drive.google.com

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 5 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	8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.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	ccleanerr.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4404	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
3996	schtasks.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
636	8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe
636	8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe
636	8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe
636	8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe
636	8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe
636	8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe
636	8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe
636	8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe
636	8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe
636	8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe
636	8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe
636	8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe
636	8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe
636	8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe
636	8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe
636	8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe
636	8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe
636	8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe
636	8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe
636	8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe
636	8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	636	8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 636 wrote to memory of 3996	636	8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe	106
PID 636 wrote to memory of 3996	636	8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe	106
PID 636 wrote to memory of 3996	636	8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe	106
PID 636 wrote to memory of 2508	636	8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe	108
PID 636 wrote to memory of 2508	636	8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe	108
PID 636 wrote to memory of 2508	636	8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe	108
PID 2508 wrote to memory of 4404	2508	cmd.exe	110
PID 2508 wrote to memory of 4404	2508	cmd.exe	110
PID 2508 wrote to memory of 4404	2508	cmd.exe	110
PID 2508 wrote to memory of 3520	2508	cmd.exe	111
PID 2508 wrote to memory of 3520	2508	cmd.exe	111
PID 2508 wrote to memory of 3520	2508	cmd.exe	111

C:\Users\Admin\AppData\Local\Temp\8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\8b1ccce8f40669f2435c69ff9325694a_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:636
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /sc ONLOGON /RL HIGHEST /tn "'ccleanerr"' /tr "'C:\Users\Admin\AppData\Roaming\ccleanerr.exe"'
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3996
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp3DCA.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2508
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4404
- - C:\Users\Admin\AppData\Roaming\ccleanerr.exe
    "C:\Users\Admin\AppData\Roaming\ccleanerr.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3520

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

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp3DCA.tmp.bat

Filesize
153B

MD5
3a4dfe2919febaca17248b4623b05da5

SHA1
ad9e9e9600523bce103560a28c03f222ce31e321

SHA256
129b161a800f6e2f77cd5133ade99264a65b60f1785fd2505cd9a30fd84e0dcd

SHA512
8438d32652bb656adefacd7cfdbb7b7a257aa782ad60e5ee0bc42ae82746c4202192b582a2a8bd1b0656bab58ec72899477311bbfd86a5f48baca407ec97da45

Download Submit
C:\Users\Admin\AppData\Roaming\crypted.txt

Filesize
60KB

MD5
54f2e9ca52baecf6d0a6140b2abedf96

SHA1
296e66d6ab339b02902b9c2e92b024149537f459

SHA256
666205cf1334d7099f9b018e4e1592303aac9d8edcc33f128fb3e46931a7e739

SHA512
bb948dc41f3b0e3a3450e52e060a934e6d095a7c12fd3e6e0dac39d5b7448929d9fa16c8e6b5c813425ad0be07d6f72a9e914e88678e1a18ee1b33bb16a0b952

Download Submit
memory/636-10-0x000000007531E000-0x000000007531F000-memory.dmp

Filesize
4KB

Download
memory/636-11-0x0000000075310000-0x0000000075AC0000-memory.dmp

Filesize
7.7MB

Download
memory/636-4-0x0000000005FF0000-0x0000000005FFA000-memory.dmp

Filesize
40KB

Download
memory/636-5-0x0000000075310000-0x0000000075AC0000-memory.dmp

Filesize
7.7MB

Download
memory/636-8-0x0000000009C50000-0x0000000009CEC000-memory.dmp

Filesize
624KB

Download
memory/636-9-0x0000000009BB0000-0x0000000009BC2000-memory.dmp

Filesize
72KB

Download
memory/636-0-0x000000007531E000-0x000000007531F000-memory.dmp

Filesize
4KB

Download
memory/636-3-0x0000000006050000-0x00000000060E2000-memory.dmp

Filesize
584KB

Download
memory/636-2-0x0000000006560000-0x0000000006B04000-memory.dmp

Filesize
5.6MB

Download
memory/636-17-0x0000000075310000-0x0000000075AC0000-memory.dmp

Filesize
7.7MB

Download
memory/636-1-0x0000000000D40000-0x0000000001640000-memory.dmp

Filesize
9.0MB

Download
memory/3520-22-0x0000000075310000-0x0000000075AC0000-memory.dmp

Filesize
7.7MB

Download
memory/3520-21-0x0000000075310000-0x0000000075AC0000-memory.dmp

Filesize
7.7MB

Download
memory/3520-24-0x0000000075310000-0x0000000075AC0000-memory.dmp

Filesize
7.7MB

Download
memory/3520-25-0x0000000075310000-0x0000000075AC0000-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