asyncrat | b2c929f7f2d37b9d1e16e8a0e42fb85e6d9cb5cef8d83dc9bac31a102865e612

General

Target

5178C3D5FB3E9A5CC0AA428226515BAC.exe
Size

1.4MB
MD5

5178c3d5fb3e9a5cc0aa428226515bac
SHA1

1ed781155e6ea6794657101797bf003381ca6d58
SHA256

b2c929f7f2d37b9d1e16e8a0e42fb85e6d9cb5cef8d83dc9bac31a102865e612
SHA512

f509d79c2f2a84605b607c13ad396c468fe15a459dac87629c8700e34d4aff6c94974d734234a5144e6dfc9d70c0b44d24ba77359654e0cd00e1749dc8b18d37
SSDEEP

24576:Ck+0wECvvv+p2zjNgK6dBiEcGwudooFkPhaFN0ACPyoI8IUGiKHT27znAzVbMg1G:JOWp2pkdooUEfCPkOGilzABQe

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.6D

Botnet

Default

C2

seznam.zapto.org:6606

seznam.zapto.org:7707

seznam.zapto.org:8808

ronymahmoud.casacam.net:6606

ronymahmoud.casacam.net:7707

ronymahmoud.casacam.net:8808

Mutex

imhydkyywihv

Attributes

delay
9
install
true
install_file
explorrare.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 1 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/800-6-0x00000000052F0000-0x0000000005302000-memory.dmp	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:

5178C3D5FB3E9A5CC0AA428226515BAC.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2013768333-4045878716-2922883000-1000\Control Panel\International\Geo\Nation	5178C3D5FB3E9A5CC0AA428226515BAC.exe

Executes dropped EXE 1 IoCs

Processes:

explorrare.exe

pid process

2884 explorrare.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

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/Job
T1053

Processes:

schtasks.exe

pid process

4012 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

384 timeout.exe

pid	process
2884	explorrare.exe

pid	process
4012	schtasks.exe

pid	process
384	timeout.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

Processes:

5178C3D5FB3E9A5CC0AA428226515BAC.exe

pid	process
800	5178C3D5FB3E9A5CC0AA428226515BAC.exe
800	5178C3D5FB3E9A5CC0AA428226515BAC.exe
800	5178C3D5FB3E9A5CC0AA428226515BAC.exe
800	5178C3D5FB3E9A5CC0AA428226515BAC.exe
800	5178C3D5FB3E9A5CC0AA428226515BAC.exe
800	5178C3D5FB3E9A5CC0AA428226515BAC.exe
800	5178C3D5FB3E9A5CC0AA428226515BAC.exe
800	5178C3D5FB3E9A5CC0AA428226515BAC.exe
800	5178C3D5FB3E9A5CC0AA428226515BAC.exe
800	5178C3D5FB3E9A5CC0AA428226515BAC.exe
800	5178C3D5FB3E9A5CC0AA428226515BAC.exe
800	5178C3D5FB3E9A5CC0AA428226515BAC.exe
800	5178C3D5FB3E9A5CC0AA428226515BAC.exe
800	5178C3D5FB3E9A5CC0AA428226515BAC.exe
800	5178C3D5FB3E9A5CC0AA428226515BAC.exe
800	5178C3D5FB3E9A5CC0AA428226515BAC.exe
800	5178C3D5FB3E9A5CC0AA428226515BAC.exe
800	5178C3D5FB3E9A5CC0AA428226515BAC.exe
800	5178C3D5FB3E9A5CC0AA428226515BAC.exe
800	5178C3D5FB3E9A5CC0AA428226515BAC.exe
800	5178C3D5FB3E9A5CC0AA428226515BAC.exe
800	5178C3D5FB3E9A5CC0AA428226515BAC.exe
800	5178C3D5FB3E9A5CC0AA428226515BAC.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

5178C3D5FB3E9A5CC0AA428226515BAC.exeexplorrare.exe

description pid process

Token: SeDebugPrivilege 800 5178C3D5FB3E9A5CC0AA428226515BAC.exe
Token: SeDebugPrivilege 2884 explorrare.exe

description	pid	process
Token: SeDebugPrivilege	800	5178C3D5FB3E9A5CC0AA428226515BAC.exe
Token: SeDebugPrivilege	2884	explorrare.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

5178C3D5FB3E9A5CC0AA428226515BAC.execmd.execmd.exe

description	pid	process	target process
PID 800 wrote to memory of 2756	800	5178C3D5FB3E9A5CC0AA428226515BAC.exe	cmd.exe
PID 800 wrote to memory of 2756	800	5178C3D5FB3E9A5CC0AA428226515BAC.exe	cmd.exe
PID 800 wrote to memory of 2756	800	5178C3D5FB3E9A5CC0AA428226515BAC.exe	cmd.exe
PID 800 wrote to memory of 2520	800	5178C3D5FB3E9A5CC0AA428226515BAC.exe	cmd.exe
PID 800 wrote to memory of 2520	800	5178C3D5FB3E9A5CC0AA428226515BAC.exe	cmd.exe
PID 800 wrote to memory of 2520	800	5178C3D5FB3E9A5CC0AA428226515BAC.exe	cmd.exe
PID 2756 wrote to memory of 4012	2756	cmd.exe	schtasks.exe
PID 2756 wrote to memory of 4012	2756	cmd.exe	schtasks.exe
PID 2756 wrote to memory of 4012	2756	cmd.exe	schtasks.exe
PID 2520 wrote to memory of 384	2520	cmd.exe	timeout.exe
PID 2520 wrote to memory of 384	2520	cmd.exe	timeout.exe
PID 2520 wrote to memory of 384	2520	cmd.exe	timeout.exe
PID 2520 wrote to memory of 2884	2520	cmd.exe	explorrare.exe
PID 2520 wrote to memory of 2884	2520	cmd.exe	explorrare.exe
PID 2520 wrote to memory of 2884	2520	cmd.exe	explorrare.exe

C:\Users\Admin\AppData\Local\Temp\5178C3D5FB3E9A5CC0AA428226515BAC.exe
"C:\Users\Admin\AppData\Local\Temp\5178C3D5FB3E9A5CC0AA428226515BAC.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:800

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /ru system /rl highest /tn 5178C3D5FB3E9A5CC0AA428226515BAC /tr '"C:\Users\Admin\AppData\Roaming\explorrare.exe"' & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:2756

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /ru system /rl highest /tn 5178C3D5FB3E9A5CC0AA428226515BAC /tr '"C:\Users\Admin\AppData\Roaming\explorrare.exe"'
3⤵
- Creates scheduled task(s)
PID:4012

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpF155.tmp.bat""
2⤵
- Suspicious use of WriteProcessMemory
PID:2520

C:\Windows\SysWOW64\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:384

C:\Users\Admin\AppData\Roaming\explorrare.exe
"C:\Users\Admin\AppData\Roaming\explorrare.exe"
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2884

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpF155.tmp.bat
Filesize
154B

MD5
ad174e55eab6c5dfc931596a7cb122d1

SHA1
97ff2ff55140d003713a82cd8bb09987bc24abda

SHA256
476da8e29bffcfffadfba28daff47130d307d3481fd5596200358feb3827f444

SHA512
7d19347446392957fa9cafe22f53376129b4829a9d227756f410e00332dbd0cf16a3f17d8fdca3432e8ce4d0bdd1ad29c0d3e339bf86f57d0140423e69f66ffb

Download Submit
C:\Users\Admin\AppData\Roaming\explorrare.exe
Filesize
1.4MB

MD5
5178c3d5fb3e9a5cc0aa428226515bac

SHA1
1ed781155e6ea6794657101797bf003381ca6d58

SHA256
b2c929f7f2d37b9d1e16e8a0e42fb85e6d9cb5cef8d83dc9bac31a102865e612

SHA512
f509d79c2f2a84605b607c13ad396c468fe15a459dac87629c8700e34d4aff6c94974d734234a5144e6dfc9d70c0b44d24ba77359654e0cd00e1749dc8b18d37

Download Submit
C:\Users\Admin\AppData\Roaming\explorrare.exe
Filesize
1.4MB

MD5
5178c3d5fb3e9a5cc0aa428226515bac

SHA1
1ed781155e6ea6794657101797bf003381ca6d58

SHA256
b2c929f7f2d37b9d1e16e8a0e42fb85e6d9cb5cef8d83dc9bac31a102865e612

SHA512
f509d79c2f2a84605b607c13ad396c468fe15a459dac87629c8700e34d4aff6c94974d734234a5144e6dfc9d70c0b44d24ba77359654e0cd00e1749dc8b18d37

Download Submit
memory/800-4-0x00000000054C0000-0x000000000555C000-memory.dmp

Filesize
624KB

Download
memory/800-2-0x00000000059D0000-0x0000000005F74000-memory.dmp

Filesize
5.6MB

Download
memory/800-5-0x0000000005410000-0x0000000005420000-memory.dmp

Filesize
64KB

Download
memory/800-6-0x00000000052F0000-0x0000000005302000-memory.dmp

Filesize
72KB

Download
memory/800-7-0x00000000745D0000-0x0000000074D80000-memory.dmp

Filesize
7.7MB

Download
memory/800-3-0x0000000005420000-0x00000000054B2000-memory.dmp

Filesize
584KB

Download
memory/800-13-0x00000000745D0000-0x0000000074D80000-memory.dmp

Filesize
7.7MB

Download
memory/800-0-0x0000000000820000-0x000000000098A000-memory.dmp

Filesize
1.4MB

Download
memory/800-1-0x00000000745D0000-0x0000000074D80000-memory.dmp

Filesize
7.7MB

Download
memory/2884-17-0x00000000745D0000-0x0000000074D80000-memory.dmp

Filesize
7.7MB

Download
memory/2884-18-0x0000000004BC0000-0x0000000004BD0000-memory.dmp

Filesize
64KB

Download
memory/2884-19-0x00000000745D0000-0x0000000074D80000-memory.dmp

Filesize
7.7MB

Download
memory/2884-22-0x00000000058A0000-0x0000000005906000-memory.dmp

Filesize
408KB

Download
memory/2884-23-0x0000000004BC0000-0x0000000004BD0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads