asyncrat | 8984004d5e340774e8e22b3945214f3d3d4645d71f88a10ffac19ba1f6c7bc28

General

Target

c875bcf1a868fbd4d782072878787785.exe
Size

45KB
MD5

c875bcf1a868fbd4d782072878787785
SHA1

71a396dcb26d19677f17c5b0f415918928081184
SHA256

8984004d5e340774e8e22b3945214f3d3d4645d71f88a10ffac19ba1f6c7bc28
SHA512

3732bbaa93a773054d2f63e947a450fe70018cf57bddc68725408959f8bf7ce0f0769671a2fb2884324a5419b9e1da3a88bf25dd5dc23c1db41de7a5340cae82
SSDEEP

768:JuK49TH4EjZWUR+ejmo2qrDKjGKG6PIyzjbFgX3i/Ei4s2/IBDZ7d:JuK49THf52OKYDy3bCXS/Eih2/ud7d

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

eu-central-7075.packetriot.net:1604

eu-central-7075.packetriot.net:22993

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
true
install_file
scvhost.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat

Async RAT payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/4724-132-0x0000000000170000-0x0000000000182000-memory.dmp	asyncrat
C:\Users\Admin\AppData\Roaming\scvhost.exe	asyncrat
C:\Users\Admin\AppData\Roaming\scvhost.exe	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:

c875bcf1a868fbd4d782072878787785.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	c875bcf1a868fbd4d782072878787785.exe

Executes dropped EXE 1 IoCs

Processes:

scvhost.exe

pid process

2108 scvhost.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

2024 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1704 timeout.exe

pid	process
2108	scvhost.exe

pid	process
2024	schtasks.exe

pid	process
1704	timeout.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

Processes:

c875bcf1a868fbd4d782072878787785.exe

pid	process
4724	c875bcf1a868fbd4d782072878787785.exe
4724	c875bcf1a868fbd4d782072878787785.exe
4724	c875bcf1a868fbd4d782072878787785.exe
4724	c875bcf1a868fbd4d782072878787785.exe
4724	c875bcf1a868fbd4d782072878787785.exe
4724	c875bcf1a868fbd4d782072878787785.exe
4724	c875bcf1a868fbd4d782072878787785.exe
4724	c875bcf1a868fbd4d782072878787785.exe
4724	c875bcf1a868fbd4d782072878787785.exe
4724	c875bcf1a868fbd4d782072878787785.exe
4724	c875bcf1a868fbd4d782072878787785.exe
4724	c875bcf1a868fbd4d782072878787785.exe
4724	c875bcf1a868fbd4d782072878787785.exe
4724	c875bcf1a868fbd4d782072878787785.exe
4724	c875bcf1a868fbd4d782072878787785.exe
4724	c875bcf1a868fbd4d782072878787785.exe
4724	c875bcf1a868fbd4d782072878787785.exe
4724	c875bcf1a868fbd4d782072878787785.exe
4724	c875bcf1a868fbd4d782072878787785.exe
4724	c875bcf1a868fbd4d782072878787785.exe
4724	c875bcf1a868fbd4d782072878787785.exe
4724	c875bcf1a868fbd4d782072878787785.exe
4724	c875bcf1a868fbd4d782072878787785.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

c875bcf1a868fbd4d782072878787785.exescvhost.exe

description pid process

Token: SeDebugPrivilege 4724 c875bcf1a868fbd4d782072878787785.exe
Token: SeDebugPrivilege 2108 scvhost.exe

description	pid	process
Token: SeDebugPrivilege	4724	c875bcf1a868fbd4d782072878787785.exe
Token: SeDebugPrivilege	2108	scvhost.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

c875bcf1a868fbd4d782072878787785.execmd.execmd.exe

description	pid	process	target process
PID 4724 wrote to memory of 4028	4724	c875bcf1a868fbd4d782072878787785.exe	cmd.exe
PID 4724 wrote to memory of 4028	4724	c875bcf1a868fbd4d782072878787785.exe	cmd.exe
PID 4724 wrote to memory of 4028	4724	c875bcf1a868fbd4d782072878787785.exe	cmd.exe
PID 4724 wrote to memory of 1640	4724	c875bcf1a868fbd4d782072878787785.exe	cmd.exe
PID 4724 wrote to memory of 1640	4724	c875bcf1a868fbd4d782072878787785.exe	cmd.exe
PID 4724 wrote to memory of 1640	4724	c875bcf1a868fbd4d782072878787785.exe	cmd.exe
PID 1640 wrote to memory of 1704	1640	cmd.exe	timeout.exe
PID 1640 wrote to memory of 1704	1640	cmd.exe	timeout.exe
PID 1640 wrote to memory of 1704	1640	cmd.exe	timeout.exe
PID 4028 wrote to memory of 2024	4028	cmd.exe	schtasks.exe
PID 4028 wrote to memory of 2024	4028	cmd.exe	schtasks.exe
PID 4028 wrote to memory of 2024	4028	cmd.exe	schtasks.exe
PID 1640 wrote to memory of 2108	1640	cmd.exe	scvhost.exe
PID 1640 wrote to memory of 2108	1640	cmd.exe	scvhost.exe
PID 1640 wrote to memory of 2108	1640	cmd.exe	scvhost.exe

C:\Users\Admin\AppData\Local\Temp\c875bcf1a868fbd4d782072878787785.exe
"C:\Users\Admin\AppData\Local\Temp\c875bcf1a868fbd4d782072878787785.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4724

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "scvhost" /tr '"C:\Users\Admin\AppData\Roaming\scvhost.exe"' & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:4028

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "scvhost" /tr '"C:\Users\Admin\AppData\Roaming\scvhost.exe"'
3⤵
- Creates scheduled task(s)
PID:2024

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp71D9.tmp.bat""
2⤵
- Suspicious use of WriteProcessMemory
PID:1640

C:\Windows\SysWOW64\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:1704

C:\Users\Admin\AppData\Roaming\scvhost.exe
"C:\Users\Admin\AppData\Roaming\scvhost.exe"
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2108

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp71D9.tmp.bat
Filesize
151B

MD5
4d3c7b519d70150a0dd7324e8bb56307

SHA1
ce68f30882e8595c674be8d8fa4b17df8a3d5496

SHA256
36a61881f867f0dd672b5f9396bcea6ef1cdb1a78a150c5423264311daed6273

SHA512
296e564f47ba96fb8ed702efc7d8d65657d82424158334366d166b34b01aac9d0af14f713a7d8f2a5c9282e9360b7684415242859d5ac46a9d6c517ef324c1ee

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

MD5
c875bcf1a868fbd4d782072878787785

SHA1
71a396dcb26d19677f17c5b0f415918928081184

SHA256
8984004d5e340774e8e22b3945214f3d3d4645d71f88a10ffac19ba1f6c7bc28

SHA512
3732bbaa93a773054d2f63e947a450fe70018cf57bddc68725408959f8bf7ce0f0769671a2fb2884324a5419b9e1da3a88bf25dd5dc23c1db41de7a5340cae82

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

MD5
c875bcf1a868fbd4d782072878787785

SHA1
71a396dcb26d19677f17c5b0f415918928081184

SHA256
8984004d5e340774e8e22b3945214f3d3d4645d71f88a10ffac19ba1f6c7bc28

SHA512
3732bbaa93a773054d2f63e947a450fe70018cf57bddc68725408959f8bf7ce0f0769671a2fb2884324a5419b9e1da3a88bf25dd5dc23c1db41de7a5340cae82

Download Submit
memory/1640-135-0x0000000000000000-mapping.dmp

Download
memory/1704-137-0x0000000000000000-mapping.dmp

Download
memory/2024-138-0x0000000000000000-mapping.dmp

Download
memory/2108-139-0x0000000000000000-mapping.dmp

Download
memory/4028-134-0x0000000000000000-mapping.dmp

Download
memory/4724-132-0x0000000000170000-0x0000000000182000-memory.dmp

Filesize
72KB

Download
memory/4724-133-0x0000000004E00000-0x0000000004E9C000-memory.dmp

Filesize
624KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads