asyncrat | 51ad998f3a847685ef42e7f85f11852d3a90939cb4d7166d7bc002f0ec87fce3

General

Target

2f7c56725edd95e9583197a7edc6d8d2_JaffaCakes118.exe
Size

91KB
MD5

2f7c56725edd95e9583197a7edc6d8d2
SHA1

bfd32f963c49656b7ba0a8204e57ed58d8b6cd81
SHA256

51ad998f3a847685ef42e7f85f11852d3a90939cb4d7166d7bc002f0ec87fce3
SHA512

749c3c05dab9224d8234243fca7fe7b2af814778652b2d3e915b15b2abf6f23064daa3218e47c69af462772c89caa0ea424399bc85d7454175357432f4f7ad29
SSDEEP

1536:HTVckhKYIj91aCnBbZ6geIWwYVxf2DfB370lGuKnkbrEgCgqULd6pXGTZcq:HTVckhKJaWbZ6geIWFx253QGuKnkbr7l

Score

10^/10

asyncrat discovery rat

Malware Config

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Executes dropped EXE 1 IoCs

Processes:

phuccau.exe

pid process

2824 phuccau.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

2900 cmd.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2824	phuccau.exe

pid	process
2900	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:

phuccau.exe2f7c56725edd95e9583197a7edc6d8d2_JaffaCakes118.execmd.execmd.exeschtasks.exetimeout.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	phuccau.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2f7c56725edd95e9583197a7edc6d8d2_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

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2296 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

2956 schtasks.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

2f7c56725edd95e9583197a7edc6d8d2_JaffaCakes118.exe

pid process

2440 2f7c56725edd95e9583197a7edc6d8d2_JaffaCakes118.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2f7c56725edd95e9583197a7edc6d8d2_JaffaCakes118.exephuccau.exe

description pid process

Token: SeDebugPrivilege 2440 2f7c56725edd95e9583197a7edc6d8d2_JaffaCakes118.exe
Token: SeDebugPrivilege 2824 phuccau.exe

pid	process
2296	timeout.exe

pid	process
2956	schtasks.exe

pid	process
2440	2f7c56725edd95e9583197a7edc6d8d2_JaffaCakes118.exe

description	pid	process
Token: SeDebugPrivilege	2440	2f7c56725edd95e9583197a7edc6d8d2_JaffaCakes118.exe
Token: SeDebugPrivilege	2824	phuccau.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

2f7c56725edd95e9583197a7edc6d8d2_JaffaCakes118.execmd.execmd.exe

description	pid	process	target process
PID 2440 wrote to memory of 2432	2440	2f7c56725edd95e9583197a7edc6d8d2_JaffaCakes118.exe	cmd.exe
PID 2440 wrote to memory of 2432	2440	2f7c56725edd95e9583197a7edc6d8d2_JaffaCakes118.exe	cmd.exe
PID 2440 wrote to memory of 2432	2440	2f7c56725edd95e9583197a7edc6d8d2_JaffaCakes118.exe	cmd.exe
PID 2440 wrote to memory of 2432	2440	2f7c56725edd95e9583197a7edc6d8d2_JaffaCakes118.exe	cmd.exe
PID 2440 wrote to memory of 2900	2440	2f7c56725edd95e9583197a7edc6d8d2_JaffaCakes118.exe	cmd.exe
PID 2440 wrote to memory of 2900	2440	2f7c56725edd95e9583197a7edc6d8d2_JaffaCakes118.exe	cmd.exe
PID 2440 wrote to memory of 2900	2440	2f7c56725edd95e9583197a7edc6d8d2_JaffaCakes118.exe	cmd.exe
PID 2440 wrote to memory of 2900	2440	2f7c56725edd95e9583197a7edc6d8d2_JaffaCakes118.exe	cmd.exe
PID 2432 wrote to memory of 2956	2432	cmd.exe	schtasks.exe
PID 2432 wrote to memory of 2956	2432	cmd.exe	schtasks.exe
PID 2432 wrote to memory of 2956	2432	cmd.exe	schtasks.exe
PID 2432 wrote to memory of 2956	2432	cmd.exe	schtasks.exe
PID 2900 wrote to memory of 2296	2900	cmd.exe	timeout.exe
PID 2900 wrote to memory of 2296	2900	cmd.exe	timeout.exe
PID 2900 wrote to memory of 2296	2900	cmd.exe	timeout.exe
PID 2900 wrote to memory of 2296	2900	cmd.exe	timeout.exe
PID 2900 wrote to memory of 2824	2900	cmd.exe	phuccau.exe
PID 2900 wrote to memory of 2824	2900	cmd.exe	phuccau.exe
PID 2900 wrote to memory of 2824	2900	cmd.exe	phuccau.exe
PID 2900 wrote to memory of 2824	2900	cmd.exe	phuccau.exe

C:\Users\Admin\AppData\Local\Temp\2f7c56725edd95e9583197a7edc6d8d2_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\2f7c56725edd95e9583197a7edc6d8d2_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2440

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "phuccau" /tr '"C:\Users\Admin\AppData\Roaming\phuccau.exe"' & exit
2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2432

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "phuccau" /tr '"C:\Users\Admin\AppData\Roaming\phuccau.exe"'
3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:2956

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp8556.tmp.bat""
2⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2900

C:\Windows\SysWOW64\timeout.exe
timeout 3
3⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
PID:2296

C:\Users\Admin\AppData\Roaming\phuccau.exe
"C:\Users\Admin\AppData\Roaming\phuccau.exe"
3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2824

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp8556.tmp.bat

Filesize
151B

MD5
63cbaaa2ca6436a0d3ea7ae25ea61fb1

SHA1
daef6366e8e9d8b106bc02706e3dbb1fe5146d01

SHA256
3b655b364e0389ded70bdce296dffc1586b3e86debdb3b78efc274ef2c7684a6

SHA512
d712e2f88ba4c1af8c785b77cdae93064d06224b81d59c17f58c8ea41e086639b3c22ca7f4f7aeb2167795fef4e00d49c20aa20a36a744e09bdf67eb787e5bd0

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

Filesize
91KB

MD5
2f7c56725edd95e9583197a7edc6d8d2

SHA1
bfd32f963c49656b7ba0a8204e57ed58d8b6cd81

SHA256
51ad998f3a847685ef42e7f85f11852d3a90939cb4d7166d7bc002f0ec87fce3

SHA512
749c3c05dab9224d8234243fca7fe7b2af814778652b2d3e915b15b2abf6f23064daa3218e47c69af462772c89caa0ea424399bc85d7454175357432f4f7ad29

Download Submit
memory/2440-0-0x000000007440E000-0x000000007440F000-memory.dmp

Filesize
4KB

Download
memory/2440-1-0x0000000000900000-0x000000000091C000-memory.dmp

Filesize
112KB

Download
memory/2440-2-0x0000000074400000-0x0000000074AEE000-memory.dmp

Filesize
6.9MB

Download
memory/2440-11-0x0000000074400000-0x0000000074AEE000-memory.dmp

Filesize
6.9MB

Download
memory/2824-16-0x00000000012D0000-0x00000000012EC000-memory.dmp

Filesize
112KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads