asyncrat | fc1189eca6c99ec90d71c2317c7c89b5c5d54dd5d378a57e50669849775f25e8

General

Target

JaffaCakes118_fc1189eca6c99ec90d71c2317c7c89b5c5d54dd5d378a57e50669849775f25e8.exe
Size

45KB
MD5

9c851b642e1e49781e2ce9eedb02ee64
SHA1

e22971a8700bf28867e744244474033d55143ee5
SHA256

fc1189eca6c99ec90d71c2317c7c89b5c5d54dd5d378a57e50669849775f25e8
SHA512

77696aaae1df81d5922ddf30a6df4fc8f1e3aacdb2884d1a55e8362315f6895c13394fc14723f2879a8848cf33ec235a5405841aed9450f15f515a251da6ebda
SSDEEP

768:buqg9T944nD5WUxiVDmo2qrjKjGKG6PIyzjbFgX3iSe8lUSoR29OAlpxyNmBDZrx:buqg9T9xy2uKYDy3bCXS+G38cApxhdrx

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

127.0.0.1:1604

127.0.0.1:14778

6.tcp.eu.ngrok.io:6606

6.tcp.eu.ngrok.io:7707

6.tcp.eu.ngrok.io:8808

6.tcp.eu.ngrok.io:1604

6.tcp.eu.ngrok.io:14778

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
true
install_file
123.exe
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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x00090000000164b1-13.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2940	123.exe

Loads dropped DLL 1 IoCs

pid	Process
2808	cmd.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

T1102

flow	ioc
2	6.tcp.eu.ngrok.io
9	6.tcp.eu.ngrok.io
13	6.tcp.eu.ngrok.io

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 6 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	JaffaCakes118_fc1189eca6c99ec90d71c2317c7c89b5c5d54dd5d378a57e50669849775f25e8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	123.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1272	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
964	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2036	JaffaCakes118_fc1189eca6c99ec90d71c2317c7c89b5c5d54dd5d378a57e50669849775f25e8.exe
2036	JaffaCakes118_fc1189eca6c99ec90d71c2317c7c89b5c5d54dd5d378a57e50669849775f25e8.exe
2036	JaffaCakes118_fc1189eca6c99ec90d71c2317c7c89b5c5d54dd5d378a57e50669849775f25e8.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2036	JaffaCakes118_fc1189eca6c99ec90d71c2317c7c89b5c5d54dd5d378a57e50669849775f25e8.exe
Token: SeDebugPrivilege	2940	123.exe
Token: SeDebugPrivilege	2940	123.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2036 wrote to memory of 1412	2036	JaffaCakes118_fc1189eca6c99ec90d71c2317c7c89b5c5d54dd5d378a57e50669849775f25e8.exe	32
PID 2036 wrote to memory of 1412	2036	JaffaCakes118_fc1189eca6c99ec90d71c2317c7c89b5c5d54dd5d378a57e50669849775f25e8.exe	32
PID 2036 wrote to memory of 1412	2036	JaffaCakes118_fc1189eca6c99ec90d71c2317c7c89b5c5d54dd5d378a57e50669849775f25e8.exe	32
PID 2036 wrote to memory of 1412	2036	JaffaCakes118_fc1189eca6c99ec90d71c2317c7c89b5c5d54dd5d378a57e50669849775f25e8.exe	32
PID 2036 wrote to memory of 2808	2036	JaffaCakes118_fc1189eca6c99ec90d71c2317c7c89b5c5d54dd5d378a57e50669849775f25e8.exe	34
PID 2036 wrote to memory of 2808	2036	JaffaCakes118_fc1189eca6c99ec90d71c2317c7c89b5c5d54dd5d378a57e50669849775f25e8.exe	34
PID 2036 wrote to memory of 2808	2036	JaffaCakes118_fc1189eca6c99ec90d71c2317c7c89b5c5d54dd5d378a57e50669849775f25e8.exe	34
PID 2036 wrote to memory of 2808	2036	JaffaCakes118_fc1189eca6c99ec90d71c2317c7c89b5c5d54dd5d378a57e50669849775f25e8.exe	34
PID 2808 wrote to memory of 1272	2808	cmd.exe	37
PID 2808 wrote to memory of 1272	2808	cmd.exe	37
PID 2808 wrote to memory of 1272	2808	cmd.exe	37
PID 2808 wrote to memory of 1272	2808	cmd.exe	37
PID 1412 wrote to memory of 964	1412	cmd.exe	36
PID 1412 wrote to memory of 964	1412	cmd.exe	36
PID 1412 wrote to memory of 964	1412	cmd.exe	36
PID 1412 wrote to memory of 964	1412	cmd.exe	36
PID 2808 wrote to memory of 2940	2808	cmd.exe	38
PID 2808 wrote to memory of 2940	2808	cmd.exe	38
PID 2808 wrote to memory of 2940	2808	cmd.exe	38
PID 2808 wrote to memory of 2940	2808	cmd.exe	38

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fc1189eca6c99ec90d71c2317c7c89b5c5d54dd5d378a57e50669849775f25e8.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fc1189eca6c99ec90d71c2317c7c89b5c5d54dd5d378a57e50669849775f25e8.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2036
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "123" /tr '"C:\Users\Admin\AppData\Roaming\123.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1412
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "123" /tr '"C:\Users\Admin\AppData\Roaming\123.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:964
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpD1EF.tmp.bat""
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2808
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:1272
- - C:\Users\Admin\AppData\Roaming\123.exe
    "C:\Users\Admin\AppData\Roaming\123.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2940

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

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpD1EF.tmp.bat

Filesize
147B

MD5
baa1b147950bae2be47c0198dfb408e3

SHA1
31af323064bd540ccdf33a12b789c527da44e397

SHA256
aaa8ba1999b77402583813d424458d72bedd9c37a0e7433a9567c1ee71da7909

SHA512
f7882e7db21ee4ce958bf5b1a418f7bfca4130cda3194fc109ad5a85694b0511d3fc839d73425c5561d84993fcaa6a7ea56158278979e803a6efa9441229184d

Download Submit
\Users\Admin\AppData\Roaming\123.exe

Filesize
45KB

MD5
9c851b642e1e49781e2ce9eedb02ee64

SHA1
e22971a8700bf28867e744244474033d55143ee5

SHA256
fc1189eca6c99ec90d71c2317c7c89b5c5d54dd5d378a57e50669849775f25e8

SHA512
77696aaae1df81d5922ddf30a6df4fc8f1e3aacdb2884d1a55e8362315f6895c13394fc14723f2879a8848cf33ec235a5405841aed9450f15f515a251da6ebda

Download Submit
memory/2036-0-0x0000000074ACE000-0x0000000074ACF000-memory.dmp

Filesize
4KB

Download
memory/2036-1-0x00000000000F0000-0x0000000000102000-memory.dmp

Filesize
72KB

Download
memory/2036-2-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download
memory/2036-12-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download
memory/2940-16-0x0000000000030000-0x0000000000042000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads