asyncrat | c38fc24d76e652212ccf1e79d8f1435efe676596d8bd99b4224bca5449b6a62f

General

Target

1092-58-0x00000000004B0000-0x00000000004C2000-memory.exe
Size

72KB
MD5

120076dce139888eedd986751a363b06
SHA1

c9eac0bb6dd3865603818f50b30f028ce4f93ff4
SHA256

c38fc24d76e652212ccf1e79d8f1435efe676596d8bd99b4224bca5449b6a62f
SHA512

4cbf19cd348b93560289f102f359fc88d99042e552602fa14d83cdd7fafb9b55910ce75d11fd9f8921fa2697e1efcb77c90e5f33ff062eda794aa4921ef976d5

Score

10^/10

asyncrat default rat suricata

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

62.197.136.195:3333

Mutex

DcRatMutex_qwqdanchun

Attributes

delay
1
install
true
install_file
testversion.exe
install_folder
%Temp%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat
suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT)
suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT)
suricata

Async RAT payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1416-54-0x0000000001130000-0x0000000001142000-memory.dmp	asyncrat
C:\Users\Admin\AppData\Local\Temp\testversion.exe	asyncrat
C:\Users\Admin\AppData\Local\Temp\testversion.exe	asyncrat
behavioral1/memory/1868-63-0x0000000001390000-0x00000000013A2000-memory.dmp	asyncrat

Executes dropped EXE 1 IoCs

Processes:

testversion.exe

pid process

1868 testversion.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

1348 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1780 timeout.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

1092-58-0x00000000004B0000-0x00000000004C2000-memory.exe

pid process

1416 1092-58-0x00000000004B0000-0x00000000004C2000-memory.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

1092-58-0x00000000004B0000-0x00000000004C2000-memory.exetestversion.exe

description pid process

Token: SeDebugPrivilege 1416 1092-58-0x00000000004B0000-0x00000000004C2000-memory.exe
Token: SeDebugPrivilege 1868 testversion.exe

pid	process
1868	testversion.exe

pid	process
1348	schtasks.exe

pid	process
1780	timeout.exe

pid	process
1416	1092-58-0x00000000004B0000-0x00000000004C2000-memory.exe

description	pid	process
Token: SeDebugPrivilege	1416	1092-58-0x00000000004B0000-0x00000000004C2000-memory.exe
Token: SeDebugPrivilege	1868	testversion.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

1092-58-0x00000000004B0000-0x00000000004C2000-memory.execmd.execmd.exe

description	pid	process	target process
PID 1416 wrote to memory of 1332	1416	1092-58-0x00000000004B0000-0x00000000004C2000-memory.exe	cmd.exe
PID 1416 wrote to memory of 1332	1416	1092-58-0x00000000004B0000-0x00000000004C2000-memory.exe	cmd.exe
PID 1416 wrote to memory of 1332	1416	1092-58-0x00000000004B0000-0x00000000004C2000-memory.exe	cmd.exe
PID 1416 wrote to memory of 1288	1416	1092-58-0x00000000004B0000-0x00000000004C2000-memory.exe	cmd.exe
PID 1416 wrote to memory of 1288	1416	1092-58-0x00000000004B0000-0x00000000004C2000-memory.exe	cmd.exe
PID 1416 wrote to memory of 1288	1416	1092-58-0x00000000004B0000-0x00000000004C2000-memory.exe	cmd.exe
PID 1332 wrote to memory of 1348	1332	cmd.exe	schtasks.exe
PID 1332 wrote to memory of 1348	1332	cmd.exe	schtasks.exe
PID 1332 wrote to memory of 1348	1332	cmd.exe	schtasks.exe
PID 1288 wrote to memory of 1780	1288	cmd.exe	timeout.exe
PID 1288 wrote to memory of 1780	1288	cmd.exe	timeout.exe
PID 1288 wrote to memory of 1780	1288	cmd.exe	timeout.exe
PID 1288 wrote to memory of 1868	1288	cmd.exe	testversion.exe
PID 1288 wrote to memory of 1868	1288	cmd.exe	testversion.exe
PID 1288 wrote to memory of 1868	1288	cmd.exe	testversion.exe

C:\Users\Admin\AppData\Local\Temp\1092-58-0x00000000004B0000-0x00000000004C2000-memory.exe
"C:\Users\Admin\AppData\Local\Temp\1092-58-0x00000000004B0000-0x00000000004C2000-memory.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1416

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "testversion" /tr '"C:\Users\Admin\AppData\Local\Temp\testversion.exe"' & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:1332

C:\Windows\system32\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "testversion" /tr '"C:\Users\Admin\AppData\Local\Temp\testversion.exe"'
3⤵
- Creates scheduled task(s)
PID:1348

C:\Windows\system32\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp12E6.tmp.bat""
2⤵
- Suspicious use of WriteProcessMemory
PID:1288

C:\Windows\system32\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:1780

C:\Users\Admin\AppData\Local\Temp\testversion.exe
"C:\Users\Admin\AppData\Local\Temp\testversion.exe"
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1868

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\testversion.exe
Filesize
72KB

MD5
120076dce139888eedd986751a363b06

SHA1
c9eac0bb6dd3865603818f50b30f028ce4f93ff4

SHA256
c38fc24d76e652212ccf1e79d8f1435efe676596d8bd99b4224bca5449b6a62f

SHA512
4cbf19cd348b93560289f102f359fc88d99042e552602fa14d83cdd7fafb9b55910ce75d11fd9f8921fa2697e1efcb77c90e5f33ff062eda794aa4921ef976d5

Download Submit
C:\Users\Admin\AppData\Local\Temp\testversion.exe
Filesize
72KB

MD5
120076dce139888eedd986751a363b06

SHA1
c9eac0bb6dd3865603818f50b30f028ce4f93ff4

SHA256
c38fc24d76e652212ccf1e79d8f1435efe676596d8bd99b4224bca5449b6a62f

SHA512
4cbf19cd348b93560289f102f359fc88d99042e552602fa14d83cdd7fafb9b55910ce75d11fd9f8921fa2697e1efcb77c90e5f33ff062eda794aa4921ef976d5

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp12E6.tmp.bat
Filesize
158B

MD5
64521984f56e781b063d2c1b63a77f88

SHA1
fc02c2ac93d6e8521aa39cf284078eb1ec83e6e6

SHA256
e53c182b59a421ae5132321bc11d224582eecfd1911d3ad78553d2295496ba2e

SHA512
43ea5b9c0ff37d03584d631374531151f4fbe85a99648f12fd537db2a28c89e84824c8ab7773aaa89cd9f58e8ca892a2301b64bbe53dc133ff551b12f38aa603

Download Submit
memory/1288-56-0x0000000000000000-mapping.dmp

Download
memory/1332-55-0x0000000000000000-mapping.dmp

Download
memory/1348-57-0x0000000000000000-mapping.dmp

Download
memory/1416-54-0x0000000001130000-0x0000000001142000-memory.dmp

Filesize
72KB

Download
memory/1780-59-0x0000000000000000-mapping.dmp

Download
memory/1868-60-0x0000000000000000-mapping.dmp

Download
memory/1868-63-0x0000000001390000-0x00000000013A2000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads