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
\Users\Admin\AppData\Local\Temp\svchost.exe	family_asyncrat

Executes dropped EXE 1 IoCs

Processes:

svchost.exe

pid process

2740 svchost.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

2760 cmd.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2740	svchost.exe

pid	process
2760	cmd.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:

schtasks.exetimeout.exesvchost.exe2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.execmd.execmd.exe

description	ioc	process
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
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

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2664 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

3000 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe

pid process

2468 2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe
2468 2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exesvchost.exe

description pid process

Token: SeDebugPrivilege 2468 2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe
Token: SeDebugPrivilege 2740 svchost.exe

pid	process
2664	timeout.exe

pid	process
3000	schtasks.exe

pid	process
2468	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe
2468	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe

description	pid	process
Token: SeDebugPrivilege	2468	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe
Token: SeDebugPrivilege	2740	svchost.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.execmd.execmd.exe

description	pid	process	target process
PID 2468 wrote to memory of 1064	2468	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe	cmd.exe
PID 2468 wrote to memory of 1064	2468	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe	cmd.exe
PID 2468 wrote to memory of 1064	2468	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe	cmd.exe
PID 2468 wrote to memory of 1064	2468	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe	cmd.exe
PID 2468 wrote to memory of 2760	2468	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe	cmd.exe
PID 2468 wrote to memory of 2760	2468	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe	cmd.exe
PID 2468 wrote to memory of 2760	2468	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe	cmd.exe
PID 2468 wrote to memory of 2760	2468	2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe	cmd.exe
PID 1064 wrote to memory of 3000	1064	cmd.exe	schtasks.exe
PID 1064 wrote to memory of 3000	1064	cmd.exe	schtasks.exe
PID 1064 wrote to memory of 3000	1064	cmd.exe	schtasks.exe
PID 1064 wrote to memory of 3000	1064	cmd.exe	schtasks.exe
PID 2760 wrote to memory of 2664	2760	cmd.exe	timeout.exe
PID 2760 wrote to memory of 2664	2760	cmd.exe	timeout.exe
PID 2760 wrote to memory of 2664	2760	cmd.exe	timeout.exe
PID 2760 wrote to memory of 2664	2760	cmd.exe	timeout.exe
PID 2760 wrote to memory of 2740	2760	cmd.exe	svchost.exe
PID 2760 wrote to memory of 2740	2760	cmd.exe	svchost.exe
PID 2760 wrote to memory of 2740	2760	cmd.exe	svchost.exe
PID 2760 wrote to memory of 2740	2760	cmd.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\2a2cb30aad7f963c02e030616945fcd0_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2468

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:1064

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:3000

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp1258.tmp.bat""
2⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2760

C:\Windows\SysWOW64\timeout.exe
timeout 3
3⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
PID:2664

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:2740

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

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\Cab1788.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp1258.tmp.bat

Filesize
154B

MD5
b4ef243925610624afff167cefa79883

SHA1
82bca8959d16cf39bb96618d741f2b8efd1e2df3

SHA256
602e7e6ec76fe0120eca6c9e78a3418abce9b0db46e1dfbc1ad84c5f6389f3f5

SHA512
e747119c2a65b86a92d2805af3686be95643e8a7573ecfb7d4f5b52e1a612b6ac62b821ca9776a1468cd5ded59e218e1dced72631770d0848be147c9e3768cb5

Download Submit
\Users\Admin\AppData\Local\Temp\svchost.exe

Filesize
45KB

MD5
2a2cb30aad7f963c02e030616945fcd0

SHA1
3990931750e1415ad539fbb4c31c31f45847aba6

SHA256
a06b140ab8f1665d9dbacaa20da469622ce010c01a7fcef3b69121440bc3019c

SHA512
427237b92f4d56228dfbebb9b6a9a62d3848f2550179199bd3d33dad7c089a0a4c6607bf51224d8d93db971426a4fef3d5e7e2f3a7eff6d3332de074f2146c68

Download Submit
memory/2468-0-0x0000000074C5E000-0x0000000074C5F000-memory.dmp

Filesize
4KB

Download
memory/2468-1-0x0000000000CD0000-0x0000000000CE2000-memory.dmp

Filesize
72KB

Download
memory/2468-2-0x0000000074C50000-0x000000007533E000-memory.dmp

Filesize
6.9MB

Download
memory/2468-11-0x0000000074C50000-0x000000007533E000-memory.dmp

Filesize
6.9MB

Download
memory/2740-16-0x0000000001190000-0x00000000011A2000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads