asyncrat | 26e657df0e518cad1107765e55ffa3af3dd71a3c70b07ce69c31f7ebaaa145b2

General

Target

26e657df0e518cad1107765e55ffa3af3dd71a3c70b07ce69c31f7ebaaa145b2.exe
Size

196KB
MD5

035de7c27c7be916b5f3320e895c61ac
SHA1

84159edae207759230fdc0ffebc46a54acf73e98
SHA256

26e657df0e518cad1107765e55ffa3af3dd71a3c70b07ce69c31f7ebaaa145b2
SHA512

aea1b617fd2441eb73ada7fcd2b75255bb6b764837d6adf962adbe460a5060a19a3d0c98ce819b2711720bf9dc9c4c9cd67d88f81727d5ecec64be3bd40a3560
SSDEEP

6144:bzWJFc3d3B6Nt53jrSrKZLehQS/xvlZ6/:663B6Nt53n6Q4Vg

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

mr7bashbab.ddns.net:6606

mr7bashbab.ddns.net:7707

mr7bashbab.ddns.net:8808

Mutex

AsyncMutex_6SI8OkPnk

Attributes

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

aes.plain

Signatures

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

Async RAT payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/964-55-0x0000000000250000-0x0000000000262000-memory.dmp	asyncrat
behavioral1/memory/2032-66-0x0000000000240000-0x0000000000252000-memory.dmp	asyncrat

Executes dropped EXE 1 IoCs

Processes:

OBS.exe

pid process

2032 OBS.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

948 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

1068 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1204 timeout.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

26e657df0e518cad1107765e55ffa3af3dd71a3c70b07ce69c31f7ebaaa145b2.exe

pid process

964 26e657df0e518cad1107765e55ffa3af3dd71a3c70b07ce69c31f7ebaaa145b2.exe

pid	process
2032	OBS.exe

pid	process
948	cmd.exe

pid	process
1068	schtasks.exe

pid	process
1204	timeout.exe

pid	process
964	26e657df0e518cad1107765e55ffa3af3dd71a3c70b07ce69c31f7ebaaa145b2.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

26e657df0e518cad1107765e55ffa3af3dd71a3c70b07ce69c31f7ebaaa145b2.exeOBS.exe

description	pid	process
Token: SeDebugPrivilege	964	26e657df0e518cad1107765e55ffa3af3dd71a3c70b07ce69c31f7ebaaa145b2.exe
Token: SeDebugPrivilege	2032	OBS.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

26e657df0e518cad1107765e55ffa3af3dd71a3c70b07ce69c31f7ebaaa145b2.execmd.execmd.exe

description	pid	process	target process
PID 964 wrote to memory of 988	964	26e657df0e518cad1107765e55ffa3af3dd71a3c70b07ce69c31f7ebaaa145b2.exe	cmd.exe
PID 964 wrote to memory of 988	964	26e657df0e518cad1107765e55ffa3af3dd71a3c70b07ce69c31f7ebaaa145b2.exe	cmd.exe
PID 964 wrote to memory of 988	964	26e657df0e518cad1107765e55ffa3af3dd71a3c70b07ce69c31f7ebaaa145b2.exe	cmd.exe
PID 964 wrote to memory of 988	964	26e657df0e518cad1107765e55ffa3af3dd71a3c70b07ce69c31f7ebaaa145b2.exe	cmd.exe
PID 964 wrote to memory of 948	964	26e657df0e518cad1107765e55ffa3af3dd71a3c70b07ce69c31f7ebaaa145b2.exe	cmd.exe
PID 964 wrote to memory of 948	964	26e657df0e518cad1107765e55ffa3af3dd71a3c70b07ce69c31f7ebaaa145b2.exe	cmd.exe
PID 964 wrote to memory of 948	964	26e657df0e518cad1107765e55ffa3af3dd71a3c70b07ce69c31f7ebaaa145b2.exe	cmd.exe
PID 964 wrote to memory of 948	964	26e657df0e518cad1107765e55ffa3af3dd71a3c70b07ce69c31f7ebaaa145b2.exe	cmd.exe
PID 948 wrote to memory of 1204	948	cmd.exe	timeout.exe
PID 948 wrote to memory of 1204	948	cmd.exe	timeout.exe
PID 948 wrote to memory of 1204	948	cmd.exe	timeout.exe
PID 948 wrote to memory of 1204	948	cmd.exe	timeout.exe
PID 988 wrote to memory of 1068	988	cmd.exe	schtasks.exe
PID 988 wrote to memory of 1068	988	cmd.exe	schtasks.exe
PID 988 wrote to memory of 1068	988	cmd.exe	schtasks.exe
PID 988 wrote to memory of 1068	988	cmd.exe	schtasks.exe
PID 948 wrote to memory of 2032	948	cmd.exe	OBS.exe
PID 948 wrote to memory of 2032	948	cmd.exe	OBS.exe
PID 948 wrote to memory of 2032	948	cmd.exe	OBS.exe
PID 948 wrote to memory of 2032	948	cmd.exe	OBS.exe

C:\Users\Admin\AppData\Local\Temp\26e657df0e518cad1107765e55ffa3af3dd71a3c70b07ce69c31f7ebaaa145b2.exe
"C:\Users\Admin\AppData\Local\Temp\26e657df0e518cad1107765e55ffa3af3dd71a3c70b07ce69c31f7ebaaa145b2.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:964

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "OBS" /tr '"C:\Users\Admin\AppData\Roaming\OBS.exe"' & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:988

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "OBS" /tr '"C:\Users\Admin\AppData\Roaming\OBS.exe"'
3⤵
- Creates scheduled task(s)
PID:1068

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp8279.tmp.bat""
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:948

C:\Windows\SysWOW64\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:1204

C:\Users\Admin\AppData\Roaming\OBS.exe
"C:\Users\Admin\AppData\Roaming\OBS.exe"
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2032

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\tmp8279.tmp.bat
Filesize
147B

MD5
1275a8eb3089384549c84fdb3df7f101

SHA1
d6be262440e8a40bdc5f2d1b30560a0a66673924

SHA256
a029dc3b702eae5b287a6b51be75c86b5975fcf35931927c1a4fb93d59f75294

SHA512
4c32777de57a3779896557d562c06ffbe78923c76fe50a146ee208447f82df6ec55d585a27984d7b5cee88b2d44cf4df36343c24ab37fe2230762f346e4785ac

Download Submit
C:\Users\Admin\AppData\Roaming\OBS.exe
Filesize
196KB

MD5
035de7c27c7be916b5f3320e895c61ac

SHA1
84159edae207759230fdc0ffebc46a54acf73e98

SHA256
26e657df0e518cad1107765e55ffa3af3dd71a3c70b07ce69c31f7ebaaa145b2

SHA512
aea1b617fd2441eb73ada7fcd2b75255bb6b764837d6adf962adbe460a5060a19a3d0c98ce819b2711720bf9dc9c4c9cd67d88f81727d5ecec64be3bd40a3560

Download Submit
C:\Users\Admin\AppData\Roaming\OBS.exe
Filesize
196KB

MD5
035de7c27c7be916b5f3320e895c61ac

SHA1
84159edae207759230fdc0ffebc46a54acf73e98

SHA256
26e657df0e518cad1107765e55ffa3af3dd71a3c70b07ce69c31f7ebaaa145b2

SHA512
aea1b617fd2441eb73ada7fcd2b75255bb6b764837d6adf962adbe460a5060a19a3d0c98ce819b2711720bf9dc9c4c9cd67d88f81727d5ecec64be3bd40a3560

Download Submit
\Users\Admin\AppData\Roaming\OBS.exe
Filesize
196KB

MD5
035de7c27c7be916b5f3320e895c61ac

SHA1
84159edae207759230fdc0ffebc46a54acf73e98

SHA256
26e657df0e518cad1107765e55ffa3af3dd71a3c70b07ce69c31f7ebaaa145b2

SHA512
aea1b617fd2441eb73ada7fcd2b75255bb6b764837d6adf962adbe460a5060a19a3d0c98ce819b2711720bf9dc9c4c9cd67d88f81727d5ecec64be3bd40a3560

Download Submit
memory/948-57-0x0000000000000000-mapping.dmp

Download
memory/964-54-0x0000000000980000-0x0000000000988000-memory.dmp

Filesize
32KB

Download
memory/964-55-0x0000000000250000-0x0000000000262000-memory.dmp

Filesize
72KB

Download
memory/988-56-0x0000000000000000-mapping.dmp

Download
memory/1068-60-0x0000000000000000-mapping.dmp

Download
memory/1204-59-0x0000000000000000-mapping.dmp

Download
memory/2032-63-0x0000000000000000-mapping.dmp

Download
memory/2032-65-0x0000000000F30000-0x0000000000F38000-memory.dmp

Filesize
32KB

Download
memory/2032-66-0x0000000000240000-0x0000000000252000-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