asyncrat | ddb0822b3ff456aa4d91bf7356b01193a63b0e333d1a4c281e7b7c18733b8fd8

General

Target

db73de377b65213640e910db6f18f33f.exe
Size

671KB
MD5

db73de377b65213640e910db6f18f33f
SHA1

b5d30bcb05b536b7736be7c49502a39c24281f82
SHA256

ddb0822b3ff456aa4d91bf7356b01193a63b0e333d1a4c281e7b7c18733b8fd8
SHA512

51a6535256262071ea520cceba1c84c395b23cb630b5c97f881205c6bec34bd4b3e06ff2ec3d80932d3194b22f63fc84b08e22adaa7f6639661e7643a9950c05

Score

10^/10

asyncrat 1 persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

1

C2

212.193.30.54:8755

Mutex

gyQ12!.,=FD7trew

Attributes

anti_vm
false
bsod
false
delay
3
install
false
install_folder
%AppData%
pastebin_config
null

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
behavioral2/memory/440-134-0x0000000000400000-0x0000000000412000-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:

db73de377b65213640e910db6f18f33f.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation	db73de377b65213640e910db6f18f33f.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

db73de377b65213640e910db6f18f33f.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Xczxwi = "\"C:\\Users\\Admin\\AppData\\Roaming\\Xhaslxdcw\\Xczxwi.exe\""	db73de377b65213640e910db6f18f33f.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

db73de377b65213640e910db6f18f33f.exe

description pid process target process

PID 4172 set thread context of 440 4172 db73de377b65213640e910db6f18f33f.exe MSBuild.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1480 timeout.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

db73de377b65213640e910db6f18f33f.exe

pid process

4172 db73de377b65213640e910db6f18f33f.exe
4172 db73de377b65213640e910db6f18f33f.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

db73de377b65213640e910db6f18f33f.exeMSBuild.exe

description pid process

Token: SeDebugPrivilege 4172 db73de377b65213640e910db6f18f33f.exe
Token: SeDebugPrivilege 440 MSBuild.exe

description	pid	process	target process
PID 4172 set thread context of 440	4172	db73de377b65213640e910db6f18f33f.exe	MSBuild.exe

pid	process
1480	timeout.exe

pid	process
4172	db73de377b65213640e910db6f18f33f.exe
4172	db73de377b65213640e910db6f18f33f.exe

description	pid	process
Token: SeDebugPrivilege	4172	db73de377b65213640e910db6f18f33f.exe
Token: SeDebugPrivilege	440	MSBuild.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

db73de377b65213640e910db6f18f33f.execmd.exe

description	pid	process	target process
PID 4172 wrote to memory of 1184	4172	db73de377b65213640e910db6f18f33f.exe	cmd.exe
PID 4172 wrote to memory of 1184	4172	db73de377b65213640e910db6f18f33f.exe	cmd.exe
PID 4172 wrote to memory of 1184	4172	db73de377b65213640e910db6f18f33f.exe	cmd.exe
PID 1184 wrote to memory of 1480	1184	cmd.exe	timeout.exe
PID 1184 wrote to memory of 1480	1184	cmd.exe	timeout.exe
PID 1184 wrote to memory of 1480	1184	cmd.exe	timeout.exe
PID 4172 wrote to memory of 440	4172	db73de377b65213640e910db6f18f33f.exe	MSBuild.exe
PID 4172 wrote to memory of 440	4172	db73de377b65213640e910db6f18f33f.exe	MSBuild.exe
PID 4172 wrote to memory of 440	4172	db73de377b65213640e910db6f18f33f.exe	MSBuild.exe
PID 4172 wrote to memory of 440	4172	db73de377b65213640e910db6f18f33f.exe	MSBuild.exe
PID 4172 wrote to memory of 440	4172	db73de377b65213640e910db6f18f33f.exe	MSBuild.exe
PID 4172 wrote to memory of 440	4172	db73de377b65213640e910db6f18f33f.exe	MSBuild.exe
PID 4172 wrote to memory of 440	4172	db73de377b65213640e910db6f18f33f.exe	MSBuild.exe
PID 4172 wrote to memory of 440	4172	db73de377b65213640e910db6f18f33f.exe	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\db73de377b65213640e910db6f18f33f.exe
"C:\Users\Admin\AppData\Local\Temp\db73de377b65213640e910db6f18f33f.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4172

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 20
2⤵
- Suspicious use of WriteProcessMemory
PID:1184

C:\Windows\SysWOW64\timeout.exe
timeout 20
3⤵
- Delays execution with timeout.exe
PID:1480

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
2⤵
- Suspicious use of AdjustPrivilegeToken
PID:440

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

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

memory/440-134-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/440-135-0x000000007441E000-0x000000007441F000-memory.dmp

Filesize
4KB

Download
memory/440-136-0x0000000005A30000-0x0000000005A31000-memory.dmp

Filesize
4KB

Download
memory/440-137-0x0000000005980000-0x0000000005A1C000-memory.dmp

Filesize
624KB

Download
memory/440-138-0x0000000006230000-0x00000000067D4000-memory.dmp

Filesize
5.6MB

Download
memory/440-139-0x0000000005C80000-0x0000000005CE6000-memory.dmp

Filesize
408KB

Download
memory/4172-130-0x0000000000CE0000-0x0000000000D8E000-memory.dmp

Filesize
696KB

Download
memory/4172-131-0x000000007441E000-0x000000007441F000-memory.dmp

Filesize
4KB

Download
memory/4172-132-0x00000000031E0000-0x00000000031E1000-memory.dmp

Filesize
4KB

Download
memory/4172-133-0x00000000060E0000-0x0000000006172000-memory.dmp

Filesize
584KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads