asyncrat | 9eb30672961f46f8d28675af6a07dfdd3e07c2ce955ec0f135ead8475195b61e

General

Target

9eb30672961f46f8d28675af6a07dfdd3e07c2ce955ec0f135ead8475195b61e.exe
Size

1.3MB
MD5

1a9f14de010f2c090d00b96aedf324d0
SHA1

9adba3d0a2364f3c620c0f81a34963ed7c6834fe
SHA256

9eb30672961f46f8d28675af6a07dfdd3e07c2ce955ec0f135ead8475195b61e
SHA512

f57220a84f920c546b9cbb71a0055dd295ea3fb03994cccc30927c8640c55797ded4e5008e16699a6eb2521d6be4bc36117e3a2bab59436f9c597a3e457624e0
SSDEEP

6144:PZMFMoMkKpwEZofkObAUQyo9tkLnncEU8tETO8u4qNlQf9HjmaDvTK0lMONbOVrS:vhT3FRTKBO6upHPijWdT

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

millaa.publicvm.com:6606

millaa.publicvm.com:7707

millaa.publicvm.com:8808

Mutex

egleynudkbe

Attributes

delay
6
install
true
install_file
microsefto.exe
install_folder
%AppData%

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1452-55-0x0000000000370000-0x0000000000382000-memory.dmp	asyncrat

Executes dropped EXE 1 IoCs

Processes:

microsefto.exe

pid process

1804 microsefto.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

1084 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

1088 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

456 timeout.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

9eb30672961f46f8d28675af6a07dfdd3e07c2ce955ec0f135ead8475195b61e.exe

pid process

1452 9eb30672961f46f8d28675af6a07dfdd3e07c2ce955ec0f135ead8475195b61e.exe

pid	process
1804	microsefto.exe

pid	process
1084	cmd.exe

pid	process
1088	schtasks.exe

pid	process
456	timeout.exe

pid	process
1452	9eb30672961f46f8d28675af6a07dfdd3e07c2ce955ec0f135ead8475195b61e.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

9eb30672961f46f8d28675af6a07dfdd3e07c2ce955ec0f135ead8475195b61e.exemicrosefto.exe

description	pid	process
Token: SeDebugPrivilege	1452	9eb30672961f46f8d28675af6a07dfdd3e07c2ce955ec0f135ead8475195b61e.exe
Token: SeDebugPrivilege	1804	microsefto.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

9eb30672961f46f8d28675af6a07dfdd3e07c2ce955ec0f135ead8475195b61e.execmd.execmd.exe

description	pid	process	target process
PID 1452 wrote to memory of 980	1452	9eb30672961f46f8d28675af6a07dfdd3e07c2ce955ec0f135ead8475195b61e.exe	cmd.exe
PID 1452 wrote to memory of 980	1452	9eb30672961f46f8d28675af6a07dfdd3e07c2ce955ec0f135ead8475195b61e.exe	cmd.exe
PID 1452 wrote to memory of 980	1452	9eb30672961f46f8d28675af6a07dfdd3e07c2ce955ec0f135ead8475195b61e.exe	cmd.exe
PID 1452 wrote to memory of 980	1452	9eb30672961f46f8d28675af6a07dfdd3e07c2ce955ec0f135ead8475195b61e.exe	cmd.exe
PID 1452 wrote to memory of 1084	1452	9eb30672961f46f8d28675af6a07dfdd3e07c2ce955ec0f135ead8475195b61e.exe	cmd.exe
PID 1452 wrote to memory of 1084	1452	9eb30672961f46f8d28675af6a07dfdd3e07c2ce955ec0f135ead8475195b61e.exe	cmd.exe
PID 1452 wrote to memory of 1084	1452	9eb30672961f46f8d28675af6a07dfdd3e07c2ce955ec0f135ead8475195b61e.exe	cmd.exe
PID 1452 wrote to memory of 1084	1452	9eb30672961f46f8d28675af6a07dfdd3e07c2ce955ec0f135ead8475195b61e.exe	cmd.exe
PID 980 wrote to memory of 1088	980	cmd.exe	schtasks.exe
PID 980 wrote to memory of 1088	980	cmd.exe	schtasks.exe
PID 980 wrote to memory of 1088	980	cmd.exe	schtasks.exe
PID 980 wrote to memory of 1088	980	cmd.exe	schtasks.exe
PID 1084 wrote to memory of 456	1084	cmd.exe	timeout.exe
PID 1084 wrote to memory of 456	1084	cmd.exe	timeout.exe
PID 1084 wrote to memory of 456	1084	cmd.exe	timeout.exe
PID 1084 wrote to memory of 456	1084	cmd.exe	timeout.exe
PID 1084 wrote to memory of 1804	1084	cmd.exe	microsefto.exe
PID 1084 wrote to memory of 1804	1084	cmd.exe	microsefto.exe
PID 1084 wrote to memory of 1804	1084	cmd.exe	microsefto.exe
PID 1084 wrote to memory of 1804	1084	cmd.exe	microsefto.exe

C:\Users\Admin\AppData\Local\Temp\9eb30672961f46f8d28675af6a07dfdd3e07c2ce955ec0f135ead8475195b61e.exe
"C:\Users\Admin\AppData\Local\Temp\9eb30672961f46f8d28675af6a07dfdd3e07c2ce955ec0f135ead8475195b61e.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1452

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /ru system /rl highest /tn 9eb30672961f46f8d28675af6a07dfdd3e07c2ce955ec0f135ead8475195b61e /tr '"C:\Users\Admin\AppData\Roaming\microsefto.exe"' & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:980

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /ru system /rl highest /tn 9eb30672961f46f8d28675af6a07dfdd3e07c2ce955ec0f135ead8475195b61e /tr '"C:\Users\Admin\AppData\Roaming\microsefto.exe"'
3⤵
- Creates scheduled task(s)
PID:1088

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpD2CA.tmp.bat""
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1084

C:\Windows\SysWOW64\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:456

C:\Users\Admin\AppData\Roaming\microsefto.exe
"C:\Users\Admin\AppData\Roaming\microsefto.exe"
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1804

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\tmpD2CA.tmp.bat
Filesize
154B

MD5
cbadbd8a2c2b43b7b1518601e1ffbf29

SHA1
7351671a9ee21715a96c54e802eefc62a8099ba5

SHA256
2dabfd757a024857991276fbbad1381708da23bf4bd4887572e3045f0ec7d76e

SHA512
902505a1a5418dd6c64576e4339f63bbcf37267e2016fc0527b5f7891780a82ae4d060a4676ef1d6676b64cead2988830344353fe3201b892f30a7e4577dfb54

Download Submit
C:\Users\Admin\AppData\Roaming\microsefto.exe
Filesize
1.3MB

MD5
1a9f14de010f2c090d00b96aedf324d0

SHA1
9adba3d0a2364f3c620c0f81a34963ed7c6834fe

SHA256
9eb30672961f46f8d28675af6a07dfdd3e07c2ce955ec0f135ead8475195b61e

SHA512
f57220a84f920c546b9cbb71a0055dd295ea3fb03994cccc30927c8640c55797ded4e5008e16699a6eb2521d6be4bc36117e3a2bab59436f9c597a3e457624e0

Download Submit
C:\Users\Admin\AppData\Roaming\microsefto.exe
Filesize
1.3MB

MD5
1a9f14de010f2c090d00b96aedf324d0

SHA1
9adba3d0a2364f3c620c0f81a34963ed7c6834fe

SHA256
9eb30672961f46f8d28675af6a07dfdd3e07c2ce955ec0f135ead8475195b61e

SHA512
f57220a84f920c546b9cbb71a0055dd295ea3fb03994cccc30927c8640c55797ded4e5008e16699a6eb2521d6be4bc36117e3a2bab59436f9c597a3e457624e0

Download Submit
\Users\Admin\AppData\Roaming\microsefto.exe
Filesize
1.3MB

MD5
1a9f14de010f2c090d00b96aedf324d0

SHA1
9adba3d0a2364f3c620c0f81a34963ed7c6834fe

SHA256
9eb30672961f46f8d28675af6a07dfdd3e07c2ce955ec0f135ead8475195b61e

SHA512
f57220a84f920c546b9cbb71a0055dd295ea3fb03994cccc30927c8640c55797ded4e5008e16699a6eb2521d6be4bc36117e3a2bab59436f9c597a3e457624e0

Download Submit
memory/456-61-0x0000000000000000-mapping.dmp

Download
memory/980-57-0x0000000000000000-mapping.dmp

Download
memory/1084-58-0x0000000000000000-mapping.dmp

Download
memory/1088-59-0x0000000000000000-mapping.dmp

Download
memory/1452-56-0x0000000075041000-0x0000000075043000-memory.dmp

Filesize
8KB

Download
memory/1452-55-0x0000000000370000-0x0000000000382000-memory.dmp

Filesize
72KB

Download
memory/1452-54-0x00000000009C0000-0x0000000000B18000-memory.dmp

Filesize
1.3MB

Download
memory/1804-64-0x0000000000000000-mapping.dmp

Download
memory/1804-66-0x0000000000E80000-0x0000000000FD8000-memory.dmp

Filesize
1.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads