asyncrat | a06b140ab8f1665d9dbacaa20da469622ce010c01a7fcef3b69121440bc3019c

General

Target

2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe
Size

45KB
MD5

2a2cb30aad7f963c02e030616945fcd0
SHA1

3990931750e1415ad539fbb4c31c31f45847aba6
SHA256

a06b140ab8f1665d9dbacaa20da469622ce010c01a7fcef3b69121440bc3019c
SHA512

427237b92f4d56228dfbebb9b6a9a62d3848f2550179199bd3d33dad7c089a0a4c6607bf51224d8d93db971426a4fef3d5e7e2f3a7eff6d3332de074f2146c68
SSDEEP

768:quZPpT1Uu4/cWUeC66mo2q1MDEbHB8+OPI/TzjbXgX3iqSo50LBDZwx:quZPpT1tr2DyR3/T3bwXSqSocdwx

Score

10^/10

asyncrat aug discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

AUG

C2

chongmei33.publicvm.com:2703

chongmei33.publicvm.com:49746

chongmei33.publicvm.com:46422

chongmei33.publicvm.com:6578

dongreg202020.duckdns.org:2703

dongreg202020.duckdns.org:49746

dongreg202020.duckdns.org:46422

dongreg202020.duckdns.org:6578

rahim321.duckdns.org:2703

rahim321.duckdns.org:49746

rahim321.duckdns.org:46422

rahim321.duckdns.org:6578

172.94.109.17:2703

172.94.109.17:49746

172.94.109.17:46422

172.94.109.17:6578

chonglee575.duckdns.org:2703

chonglee575.duckdns.org:49746

chonglee575.duckdns.org:46422

chonglee575.duckdns.org:6578

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
true
install_file
svchost.exe
install_folder
%Temp%

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

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\svchost.exe	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

Processes:

2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

svchost.exe

pid process

2712 svchost.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2712	svchost.exe

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

Processes:

2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.execmd.execmd.exeschtasks.exetimeout.exesvchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

4728 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

Processes:

schtasks.exe

pid process

1488 schtasks.exe

pid	process
4728	timeout.exe

pid	process
1488	schtasks.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

Processes:

2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe

pid	process
812	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe
812	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe
812	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe
812	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe
812	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe
812	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe
812	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe
812	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe
812	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe
812	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe
812	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe
812	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe
812	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe
812	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe
812	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe
812	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe
812	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe
812	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe
812	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe
812	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe
812	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exesvchost.exe

description pid process

Token: SeDebugPrivilege 812 2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe
Token: SeDebugPrivilege 2712 svchost.exe

description	pid	process
Token: SeDebugPrivilege	812	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe
Token: SeDebugPrivilege	2712	svchost.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.execmd.execmd.exe

description	pid	process	target process
PID 812 wrote to memory of 1472	812	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe	cmd.exe
PID 812 wrote to memory of 1472	812	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe	cmd.exe
PID 812 wrote to memory of 1472	812	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe	cmd.exe
PID 812 wrote to memory of 3296	812	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe	cmd.exe
PID 812 wrote to memory of 3296	812	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe	cmd.exe
PID 812 wrote to memory of 3296	812	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe	cmd.exe
PID 1472 wrote to memory of 1488	1472	cmd.exe	schtasks.exe
PID 1472 wrote to memory of 1488	1472	cmd.exe	schtasks.exe
PID 1472 wrote to memory of 1488	1472	cmd.exe	schtasks.exe
PID 3296 wrote to memory of 4728	3296	cmd.exe	timeout.exe
PID 3296 wrote to memory of 4728	3296	cmd.exe	timeout.exe
PID 3296 wrote to memory of 4728	3296	cmd.exe	timeout.exe
PID 3296 wrote to memory of 2712	3296	cmd.exe	svchost.exe
PID 3296 wrote to memory of 2712	3296	cmd.exe	svchost.exe
PID 3296 wrote to memory of 2712	3296	cmd.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\2a2cb30aad7f963c02e030616945fcd0_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:812

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Local\Temp\svchost.exe"' & exit
2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1472

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Local\Temp\svchost.exe"'
3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:1488

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp7484.tmp.bat""
2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3296

C:\Windows\SysWOW64\timeout.exe
timeout 3
3⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
PID:4728

C:\Users\Admin\AppData\Local\Temp\svchost.exe
"C:\Users\Admin\AppData\Local\Temp\svchost.exe"
3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2712

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\Temp\svchost.exe

Filesize
45KB

MD5
2a2cb30aad7f963c02e030616945fcd0

SHA1
3990931750e1415ad539fbb4c31c31f45847aba6

SHA256
a06b140ab8f1665d9dbacaa20da469622ce010c01a7fcef3b69121440bc3019c

SHA512
427237b92f4d56228dfbebb9b6a9a62d3848f2550179199bd3d33dad7c089a0a4c6607bf51224d8d93db971426a4fef3d5e7e2f3a7eff6d3332de074f2146c68

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp7484.tmp.bat

Filesize
154B

MD5
ff2f1da35c288037d5a10b23042da7c4

SHA1
c53516bec1df8cae4692135de805605aa958bd53

SHA256
56c913e46cfde79856801ae109aca74d4070258b89a75ceed1c48d607bd9e264

SHA512
1b367ba580a87741affcc1d4e0a5bcc4d3d044695aafbacc87374765b177400a8732692c3ceb3492df445a4e7585d4caf34daa4ba8855aec963be250001fd89b

Download Submit
memory/812-0-0x000000007449E000-0x000000007449F000-memory.dmp

Filesize
4KB

Download
memory/812-1-0x00000000005D0000-0x00000000005E2000-memory.dmp

Filesize
72KB

Download
memory/812-2-0x0000000074490000-0x0000000074C40000-memory.dmp

Filesize
7.7MB

Download
memory/812-3-0x0000000004FD0000-0x000000000506C000-memory.dmp

Filesize
624KB

Download
memory/812-8-0x0000000074490000-0x0000000074C40000-memory.dmp

Filesize
7.7MB

Download
memory/2712-13-0x00000000743E0000-0x0000000074B90000-memory.dmp

Filesize
7.7MB

Download
memory/2712-14-0x0000000006130000-0x00000000066D4000-memory.dmp

Filesize
5.6MB

Download
memory/2712-15-0x0000000005BF0000-0x0000000005C56000-memory.dmp

Filesize
408KB

Download
memory/2712-16-0x00000000743E0000-0x0000000074B90000-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