asyncrat | 0491601a5cda328f6712c4b7c2dc2380315a8bcf7e47d9329a23a8e1ee6378e2

General

Target

Disposable Protective Mask.exe
Size

561KB
MD5

6f254eb4843ee683a0c43e340bfe8840
SHA1

82b24614b10237c4b8ab9b31a860555be00667b7
SHA256

82f23154db8360127ad3fbcab71948019b0e2904c1ec65d5045722f6ee91fdce
SHA512

2ed7a8a383366eefb4e2fe6d23f97f2ba24b992c315d6cdde6069e2e76910413a77c20b5da71ac74b35e8bfd05f36951225afbca8035b35a82d763d49ff65d19

Score

10^/10

asyncrat tinotino coreentity rat rezer0

Malware Config

Extracted

Family

asyncrat

Version

0.5.6D

Botnet

TINOTINO

C2

185.165.153.215:6606

Mutex

uqeolevmck

Attributes

delay
1
install
false
install_folder
%AppData%

aes.plain

Signatures

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

CoreEntity .NET Packer 1 IoCs

A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

coreentity

Processes:

resource	yara_rule
behavioral1/memory/1472-57-0x0000000000570000-0x0000000000578000-memory.dmp	coreentity

Async RAT payload 6 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1964-64-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1964-65-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1964-66-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1964-67-0x000000000040C5FE-mapping.dmp	asyncrat
behavioral1/memory/1964-69-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1964-71-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1472-58-0x0000000000B60000-0x0000000000B7A000-memory.dmp	rezer0

Suspicious use of SetThreadContext 1 IoCs

Processes:

Disposable Protective Mask.exe

description pid process target process

PID 1472 set thread context of 1964 1472 Disposable Protective Mask.exe Disposable Protective Mask.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

2032 schtasks.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

Disposable Protective Mask.exe

pid process

1472 Disposable Protective Mask.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Disposable Protective Mask.exe

description pid process

Token: SeDebugPrivilege 1472 Disposable Protective Mask.exe

description	pid	process	target process
PID 1472 set thread context of 1964	1472	Disposable Protective Mask.exe	Disposable Protective Mask.exe

pid	process
2032	schtasks.exe

pid	process
1472	Disposable Protective Mask.exe

description	pid	process
Token: SeDebugPrivilege	1472	Disposable Protective Mask.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

Disposable Protective Mask.exe

description	pid	process	target process
PID 1472 wrote to memory of 2032	1472	Disposable Protective Mask.exe	schtasks.exe
PID 1472 wrote to memory of 2032	1472	Disposable Protective Mask.exe	schtasks.exe
PID 1472 wrote to memory of 2032	1472	Disposable Protective Mask.exe	schtasks.exe
PID 1472 wrote to memory of 2032	1472	Disposable Protective Mask.exe	schtasks.exe
PID 1472 wrote to memory of 1964	1472	Disposable Protective Mask.exe	Disposable Protective Mask.exe
PID 1472 wrote to memory of 1964	1472	Disposable Protective Mask.exe	Disposable Protective Mask.exe
PID 1472 wrote to memory of 1964	1472	Disposable Protective Mask.exe	Disposable Protective Mask.exe
PID 1472 wrote to memory of 1964	1472	Disposable Protective Mask.exe	Disposable Protective Mask.exe
PID 1472 wrote to memory of 1964	1472	Disposable Protective Mask.exe	Disposable Protective Mask.exe
PID 1472 wrote to memory of 1964	1472	Disposable Protective Mask.exe	Disposable Protective Mask.exe
PID 1472 wrote to memory of 1964	1472	Disposable Protective Mask.exe	Disposable Protective Mask.exe
PID 1472 wrote to memory of 1964	1472	Disposable Protective Mask.exe	Disposable Protective Mask.exe
PID 1472 wrote to memory of 1964	1472	Disposable Protective Mask.exe	Disposable Protective Mask.exe

C:\Users\Admin\AppData\Local\Temp\Disposable Protective Mask.exe
"C:\Users\Admin\AppData\Local\Temp\Disposable Protective Mask.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1472

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vKnNDXnkQhbt" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6B80.tmp"
2⤵
- Creates scheduled task(s)
PID:2032

C:\Users\Admin\AppData\Local\Temp\Disposable Protective Mask.exe
"{path}"
2⤵
PID:1964

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp6B80.tmp
Filesize
1KB

MD5
8c3356d9216f61602d23b6754dc89530

SHA1
8ae3b74de073959817b1f53039a2f7ef9841d7b8

SHA256
e0a833e320a16a7080a1a5731a6a61b0f987ddfa81470cce6a31b12e195cafea

SHA512
0adf24e71276d375168fc45fe9aaffc493d686a759a5e0c32fde0c6cf4970f1df831044453a54a1179e156600e7858d71355ae8cc5bdf0756eb2fefabe4b4872

Download Submit
memory/1472-57-0x0000000000570000-0x0000000000578000-memory.dmp

Filesize
32KB

Download
memory/1472-55-0x0000000000370000-0x000000000038A000-memory.dmp

Filesize
104KB

Download
memory/1472-54-0x00000000011A0000-0x0000000001232000-memory.dmp

Filesize
584KB

Download
memory/1472-58-0x0000000000B60000-0x0000000000B7A000-memory.dmp

Filesize
104KB

Download
memory/1472-56-0x0000000076C81000-0x0000000076C83000-memory.dmp

Filesize
8KB

Download
memory/1964-66-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1964-61-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1964-62-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1964-64-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1964-65-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1964-67-0x000000000040C5FE-mapping.dmp

Download
memory/1964-69-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1964-71-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2032-59-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads