asyncrat | a7999bf95618f2e2c37c5d0e805f8ff4fa44d2254e0ee0175df630f386a0c979

General

Target

1dfb8f4b408ad8a763e4655e90c07093.exe
Size

668KB
MD5

1dfb8f4b408ad8a763e4655e90c07093
SHA1

be332a245adcd81707dd3de6b60653e2f68a0256
SHA256

a7999bf95618f2e2c37c5d0e805f8ff4fa44d2254e0ee0175df630f386a0c979
SHA512

a7af9a29cc5942ca67473f0f25f919bd22b6510b8f9738121dbac2f248dcfdbadc086097c120e00bba3df1fd08f7881d54fa3ec0a3775a0ab01219aa5991f9df

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 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1704-62-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1704-63-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1704-64-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1704-65-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

1dfb8f4b408ad8a763e4655e90c07093.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1405931862-909307831-4085185274-1000\Software\Microsoft\Windows\CurrentVersion\Run\Xhdgkfv = "\"C:\\Users\\Admin\\AppData\\Roaming\\Wdnzjeuy\\Xhdgkfv.exe\""	1dfb8f4b408ad8a763e4655e90c07093.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

1dfb8f4b408ad8a763e4655e90c07093.exe

description pid process target process

PID 1052 set thread context of 1704 1052 1dfb8f4b408ad8a763e4655e90c07093.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

1104 timeout.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

1dfb8f4b408ad8a763e4655e90c07093.exe

pid process

1052 1dfb8f4b408ad8a763e4655e90c07093.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

1dfb8f4b408ad8a763e4655e90c07093.exe

description pid process

Token: SeDebugPrivilege 1052 1dfb8f4b408ad8a763e4655e90c07093.exe

description	pid	process	target process
PID 1052 set thread context of 1704	1052	1dfb8f4b408ad8a763e4655e90c07093.exe	MSBuild.exe

pid	process
1104	timeout.exe

pid	process
1052	1dfb8f4b408ad8a763e4655e90c07093.exe

description	pid	process
Token: SeDebugPrivilege	1052	1dfb8f4b408ad8a763e4655e90c07093.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

1dfb8f4b408ad8a763e4655e90c07093.execmd.exe

description	pid	process	target process
PID 1052 wrote to memory of 1100	1052	1dfb8f4b408ad8a763e4655e90c07093.exe	cmd.exe
PID 1052 wrote to memory of 1100	1052	1dfb8f4b408ad8a763e4655e90c07093.exe	cmd.exe
PID 1052 wrote to memory of 1100	1052	1dfb8f4b408ad8a763e4655e90c07093.exe	cmd.exe
PID 1052 wrote to memory of 1100	1052	1dfb8f4b408ad8a763e4655e90c07093.exe	cmd.exe
PID 1100 wrote to memory of 1104	1100	cmd.exe	timeout.exe
PID 1100 wrote to memory of 1104	1100	cmd.exe	timeout.exe
PID 1100 wrote to memory of 1104	1100	cmd.exe	timeout.exe
PID 1100 wrote to memory of 1104	1100	cmd.exe	timeout.exe
PID 1052 wrote to memory of 1704	1052	1dfb8f4b408ad8a763e4655e90c07093.exe	MSBuild.exe
PID 1052 wrote to memory of 1704	1052	1dfb8f4b408ad8a763e4655e90c07093.exe	MSBuild.exe
PID 1052 wrote to memory of 1704	1052	1dfb8f4b408ad8a763e4655e90c07093.exe	MSBuild.exe
PID 1052 wrote to memory of 1704	1052	1dfb8f4b408ad8a763e4655e90c07093.exe	MSBuild.exe
PID 1052 wrote to memory of 1704	1052	1dfb8f4b408ad8a763e4655e90c07093.exe	MSBuild.exe
PID 1052 wrote to memory of 1704	1052	1dfb8f4b408ad8a763e4655e90c07093.exe	MSBuild.exe
PID 1052 wrote to memory of 1704	1052	1dfb8f4b408ad8a763e4655e90c07093.exe	MSBuild.exe
PID 1052 wrote to memory of 1704	1052	1dfb8f4b408ad8a763e4655e90c07093.exe	MSBuild.exe
PID 1052 wrote to memory of 1704	1052	1dfb8f4b408ad8a763e4655e90c07093.exe	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\1dfb8f4b408ad8a763e4655e90c07093.exe
"C:\Users\Admin\AppData\Local\Temp\1dfb8f4b408ad8a763e4655e90c07093.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1052

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 20
2⤵
- Suspicious use of WriteProcessMemory
PID:1100

C:\Windows\SysWOW64\timeout.exe
timeout 20
3⤵
- Delays execution with timeout.exe
PID:1104

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
2⤵
PID:1704

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1052-54-0x0000000000D40000-0x0000000000DEE000-memory.dmp

Filesize
696KB

Download
memory/1052-55-0x00000000753E1000-0x00000000753E3000-memory.dmp

Filesize
8KB

Download
memory/1052-56-0x000000007402E000-0x000000007402F000-memory.dmp

Filesize
4KB

Download
memory/1052-57-0x0000000004F00000-0x0000000004F9E000-memory.dmp

Filesize
632KB

Download
memory/1052-58-0x0000000004C40000-0x0000000004C41000-memory.dmp

Filesize
4KB

Download
memory/1052-59-0x0000000004740000-0x000000000478C000-memory.dmp

Filesize
304KB

Download
memory/1704-60-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1704-61-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1704-62-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1704-63-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1704-64-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1704-65-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1704-66-0x000000007402E000-0x000000007402F000-memory.dmp

Filesize
4KB

Download
memory/1704-68-0x0000000004BA0000-0x0000000004BA1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads