asyncrat | 1caa0352053eb98c1a6243c5daf8f2f500c678c45593f8cde34ec624bf2fa8b0

General

Target

1caa0352053eb98c1a6243c5daf8f2f500c678c45593f8cde34ec624bf2fa8b0.exe
Size

2.5MB
MD5

f9d170623021e1abe7201d2fd2724445
SHA1

724d2cf592d117729000a2f1a2a70e4ecb293385
SHA256

1caa0352053eb98c1a6243c5daf8f2f500c678c45593f8cde34ec624bf2fa8b0
SHA512

458c71b4fab11a8ff42ef9e5f80918c70e4b558df878f2fd0408f13fcccc032b274c8d72b5d59b26ef95d0021df3b4f952b53357f080696a4071d6ca394687f3
SSDEEP

49152:sOOwtpahnESjN+F77TkmGNXQqNeAK68mx6ZGbAOp:s/wtdDG7

Score

10^/10

asyncrat 016-oct discovery persistence rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

016-Oct

C2

doesnotkl.dynuddns.net:11206

Mutex

DcRatMutex_qyunchun

Attributes

delay
1
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

1caa0352053eb98c1a6243c5daf8f2f500c678c45593f8cde34ec624bf2fa8b0.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\TechDesignerEditor = "C:\\Users\\Admin\\Music\\TechDesignerUpdater\\TechConvertVideo.exe"	1caa0352053eb98c1a6243c5daf8f2f500c678c45593f8cde34ec624bf2fa8b0.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

1caa0352053eb98c1a6243c5daf8f2f500c678c45593f8cde34ec624bf2fa8b0.exe

description	pid	process	target process
PID 2604 set thread context of 2752	2604	1caa0352053eb98c1a6243c5daf8f2f500c678c45593f8cde34ec624bf2fa8b0.exe	csc.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

1caa0352053eb98c1a6243c5daf8f2f500c678c45593f8cde34ec624bf2fa8b0.execsc.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1caa0352053eb98c1a6243c5daf8f2f500c678c45593f8cde34ec624bf2fa8b0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csc.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

csc.exe

description pid process

Token: SeDebugPrivilege 2752 csc.exe

description	pid	process
Token: SeDebugPrivilege	2752	csc.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

1caa0352053eb98c1a6243c5daf8f2f500c678c45593f8cde34ec624bf2fa8b0.exe

description	pid	process	target process
PID 2604 wrote to memory of 2752	2604	1caa0352053eb98c1a6243c5daf8f2f500c678c45593f8cde34ec624bf2fa8b0.exe	csc.exe
PID 2604 wrote to memory of 2752	2604	1caa0352053eb98c1a6243c5daf8f2f500c678c45593f8cde34ec624bf2fa8b0.exe	csc.exe
PID 2604 wrote to memory of 2752	2604	1caa0352053eb98c1a6243c5daf8f2f500c678c45593f8cde34ec624bf2fa8b0.exe	csc.exe
PID 2604 wrote to memory of 2752	2604	1caa0352053eb98c1a6243c5daf8f2f500c678c45593f8cde34ec624bf2fa8b0.exe	csc.exe
PID 2604 wrote to memory of 2752	2604	1caa0352053eb98c1a6243c5daf8f2f500c678c45593f8cde34ec624bf2fa8b0.exe	csc.exe
PID 2604 wrote to memory of 2752	2604	1caa0352053eb98c1a6243c5daf8f2f500c678c45593f8cde34ec624bf2fa8b0.exe	csc.exe

C:\Users\Admin\AppData\Local\Temp\1caa0352053eb98c1a6243c5daf8f2f500c678c45593f8cde34ec624bf2fa8b0.exe
"C:\Users\Admin\AppData\Local\Temp\1caa0352053eb98c1a6243c5daf8f2f500c678c45593f8cde34ec624bf2fa8b0.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2604

C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2752

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab3E88.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/2604-13-0x0000000000400000-0x00000000006A2000-memory.dmp

Filesize
2.6MB

Download
memory/2604-11-0x0000000000400000-0x00000000006A2000-memory.dmp

Filesize
2.6MB

Download
memory/2604-0-0x0000000000400000-0x00000000006A2000-memory.dmp

Filesize
2.6MB

Download
memory/2604-7-0x0000000000400000-0x00000000006A2000-memory.dmp

Filesize
2.6MB

Download
memory/2604-6-0x0000000000400000-0x00000000006A2000-memory.dmp

Filesize
2.6MB

Download
memory/2604-4-0x0000000000400000-0x00000000006A2000-memory.dmp

Filesize
2.6MB

Download
memory/2604-2-0x0000000000511000-0x0000000000529000-memory.dmp

Filesize
96KB

Download
memory/2604-21-0x0000000000511000-0x0000000000529000-memory.dmp

Filesize
96KB

Download
memory/2604-5-0x0000000000400000-0x00000000006A2000-memory.dmp

Filesize
2.6MB

Download
memory/2604-1-0x0000000000400000-0x00000000006A2000-memory.dmp

Filesize
2.6MB

Download
memory/2752-39-0x0000000073D80000-0x000000007446E000-memory.dmp

Filesize
6.9MB

Download
memory/2752-17-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2752-15-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2752-18-0x0000000073D8E000-0x0000000073D8F000-memory.dmp

Filesize
4KB

Download
memory/2752-19-0x0000000073D80000-0x000000007446E000-memory.dmp

Filesize
6.9MB

Download
memory/2752-9-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2752-10-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2752-38-0x0000000073D8E000-0x0000000073D8F000-memory.dmp

Filesize
4KB

Download
memory/2752-8-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads