asyncrat | aa199fbb289e048c5abaa334be3eb172175cf53e736d3a15ca32549086c99a8c

General

Target

shadow.exe
Size

45KB
MD5

b0c54754039e4c312c81cc1de388e1e6
SHA1

c00e8d078f1224156e5f34720732891afe72d654
SHA256

aa199fbb289e048c5abaa334be3eb172175cf53e736d3a15ca32549086c99a8c
SHA512

c58117d3f377b6b7c1bba94d56049927a2a0e76e4243fa217ed8af1e80365939a5d3441572dea3c079403c07cad36ffebd35703e69fb258518244f2ca25d8bc8
SSDEEP

768:DuU2VTwkbBHWU7TZcFmo2qjLKjGKG6PIyzjbFgX3i0ZHPcZekvlaBDZDx:DuU2VTwAJM2aKYDy3bCXS0ZC+dDx

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

klept0wiz-33913.portmap.host:33913

Mutex

guaeiofj398ajgka340gka9wk3f09jq3ad

Attributes

delay
3
install
true
install_file
Management.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 5 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1724-54-0x0000000000120000-0x0000000000132000-memory.dmp	asyncrat
\Users\Admin\AppData\Roaming\Management.exe	asyncrat
C:\Users\Admin\AppData\Roaming\Management.exe	asyncrat
C:\Users\Admin\AppData\Roaming\Management.exe	asyncrat
behavioral1/memory/936-68-0x0000000000A20000-0x0000000000A32000-memory.dmp	asyncrat

Executes dropped EXE 1 IoCs

Processes:

Management.exe

pid process

936 Management.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

1700 cmd.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1624 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1772 timeout.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

shadow.exe

pid process

1724 shadow.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

shadow.exeManagement.exe

description pid process

Token: SeDebugPrivilege 1724 shadow.exe
Token: SeDebugPrivilege 936 Management.exe

pid	process
936	Management.exe

pid	process
1700	cmd.exe

pid	process
1624	schtasks.exe

pid	process
1772	timeout.exe

pid	process
1724	shadow.exe

description	pid	process
Token: SeDebugPrivilege	1724	shadow.exe
Token: SeDebugPrivilege	936	Management.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

shadow.execmd.execmd.exe

description	pid	process	target process
PID 1724 wrote to memory of 588	1724	shadow.exe	cmd.exe
PID 1724 wrote to memory of 588	1724	shadow.exe	cmd.exe
PID 1724 wrote to memory of 588	1724	shadow.exe	cmd.exe
PID 1724 wrote to memory of 588	1724	shadow.exe	cmd.exe
PID 1724 wrote to memory of 1700	1724	shadow.exe	cmd.exe
PID 1724 wrote to memory of 1700	1724	shadow.exe	cmd.exe
PID 1724 wrote to memory of 1700	1724	shadow.exe	cmd.exe
PID 1724 wrote to memory of 1700	1724	shadow.exe	cmd.exe
PID 588 wrote to memory of 1624	588	cmd.exe	schtasks.exe
PID 588 wrote to memory of 1624	588	cmd.exe	schtasks.exe
PID 588 wrote to memory of 1624	588	cmd.exe	schtasks.exe
PID 588 wrote to memory of 1624	588	cmd.exe	schtasks.exe
PID 1700 wrote to memory of 1772	1700	cmd.exe	timeout.exe
PID 1700 wrote to memory of 1772	1700	cmd.exe	timeout.exe
PID 1700 wrote to memory of 1772	1700	cmd.exe	timeout.exe
PID 1700 wrote to memory of 1772	1700	cmd.exe	timeout.exe
PID 1700 wrote to memory of 936	1700	cmd.exe	Management.exe
PID 1700 wrote to memory of 936	1700	cmd.exe	Management.exe
PID 1700 wrote to memory of 936	1700	cmd.exe	Management.exe
PID 1700 wrote to memory of 936	1700	cmd.exe	Management.exe

C:\Users\Admin\AppData\Local\Temp\shadow.exe
"C:\Users\Admin\AppData\Local\Temp\shadow.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1724

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Management" /tr '"C:\Users\Admin\AppData\Roaming\Management.exe"' & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:588

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "Management" /tr '"C:\Users\Admin\AppData\Roaming\Management.exe"'
3⤵
- Creates scheduled task(s)
PID:1624

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp4838.tmp.bat""
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1700

C:\Windows\SysWOW64\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:1772

C:\Users\Admin\AppData\Roaming\Management.exe
"C:\Users\Admin\AppData\Roaming\Management.exe"
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:936

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp4838.tmp.bat
Filesize
154B

MD5
ad081f5555a0b751c185fc794dc1ca15

SHA1
797690ae4f99076f1b58f0869d94fc1716d83dd0

SHA256
776077b3c18e70916551f1a8f38ec227e6ee92507ba23ec1f685de05f1b91b34

SHA512
13b171bb1e6dc77914efd02c0745cb15a21425bba3bb157769463de78e3771d56dd16d7bf3c5d4025d269aeb9ed05c97879b8821b5d5233c87a9dd2b2b88f2d1

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp4838.tmp.bat
Filesize
154B

MD5
ad081f5555a0b751c185fc794dc1ca15

SHA1
797690ae4f99076f1b58f0869d94fc1716d83dd0

SHA256
776077b3c18e70916551f1a8f38ec227e6ee92507ba23ec1f685de05f1b91b34

SHA512
13b171bb1e6dc77914efd02c0745cb15a21425bba3bb157769463de78e3771d56dd16d7bf3c5d4025d269aeb9ed05c97879b8821b5d5233c87a9dd2b2b88f2d1

Download Submit
C:\Users\Admin\AppData\Roaming\Management.exe
Filesize
45KB

MD5
b0c54754039e4c312c81cc1de388e1e6

SHA1
c00e8d078f1224156e5f34720732891afe72d654

SHA256
aa199fbb289e048c5abaa334be3eb172175cf53e736d3a15ca32549086c99a8c

SHA512
c58117d3f377b6b7c1bba94d56049927a2a0e76e4243fa217ed8af1e80365939a5d3441572dea3c079403c07cad36ffebd35703e69fb258518244f2ca25d8bc8

Download Submit
C:\Users\Admin\AppData\Roaming\Management.exe
Filesize
45KB

MD5
b0c54754039e4c312c81cc1de388e1e6

SHA1
c00e8d078f1224156e5f34720732891afe72d654

SHA256
aa199fbb289e048c5abaa334be3eb172175cf53e736d3a15ca32549086c99a8c

SHA512
c58117d3f377b6b7c1bba94d56049927a2a0e76e4243fa217ed8af1e80365939a5d3441572dea3c079403c07cad36ffebd35703e69fb258518244f2ca25d8bc8

Download Submit
\Users\Admin\AppData\Roaming\Management.exe
Filesize
45KB

MD5
b0c54754039e4c312c81cc1de388e1e6

SHA1
c00e8d078f1224156e5f34720732891afe72d654

SHA256
aa199fbb289e048c5abaa334be3eb172175cf53e736d3a15ca32549086c99a8c

SHA512
c58117d3f377b6b7c1bba94d56049927a2a0e76e4243fa217ed8af1e80365939a5d3441572dea3c079403c07cad36ffebd35703e69fb258518244f2ca25d8bc8

Download Submit
memory/936-68-0x0000000000A20000-0x0000000000A32000-memory.dmp

Filesize
72KB

Download
memory/936-69-0x0000000004E30000-0x0000000004E70000-memory.dmp

Filesize
256KB

Download
memory/936-70-0x0000000004E30000-0x0000000004E70000-memory.dmp

Filesize
256KB

Download
memory/1724-54-0x0000000000120000-0x0000000000132000-memory.dmp

Filesize
72KB

Download
memory/1724-55-0x0000000004C80000-0x0000000004CC0000-memory.dmp

Filesize
256KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads