asyncrat | bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8

General

Target

bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe
Size

306KB
MD5

b3ec5baf020e50acea70c6b4e8de7bc1
SHA1

e6c7cfa860cb338279600ba3b7398f9b43275fb6
SHA256

bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8
SHA512

758fa4dbd83ad68039f22b3575a28e02c66920a7e2ea9305515ba480746d8c77cb44f28ac2213e2e7718fc19e17b311b44c5788a87aae2f7792c4b04a07d86f7
SSDEEP

6144:IZ2rHi6Q+04RLO+ZJken+5mFyCCBC3QTszhNXVZOhRQ09Dguw1xC:IZf6Qh4RlZJken+5oyCeZsNNF29DiI

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

kcfresh.ddns.net:6606

kcfresh.ddns.net:7707

kcfresh.ddns.net:8808

185.140.53.227:6606

185.140.53.227:7707

185.140.53.227:8808

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
true
install_file
system services.exe
install_folder
%AppData%

aes.plain

Signatures

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

Async RAT payload 6 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1112-62-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1112-63-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1112-64-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1112-65-0x000000000040C76E-mapping.dmp	asyncrat
behavioral1/memory/1112-69-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1112-67-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

Suspicious use of SetThreadContext 1 IoCs

Processes:

bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe

description	pid	process	target process
PID 668 set thread context of 1112	668	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.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

780 schtasks.exe

pid	process
780	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe

pid	process
668	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe
668	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe

description pid process

Token: SeDebugPrivilege 668 bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe

description	pid	process
Token: SeDebugPrivilege	668	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exebec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe

C:\Users\Admin\AppData\Local\Temp\bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe
"C:\Users\Admin\AppData\Local\Temp\bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:668

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rVUWQBdj" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD75C.tmp"
2⤵
- Creates scheduled task(s)
PID:780

C:\Users\Admin\AppData\Local\Temp\bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe
"{path}"
2⤵
PID:1660

C:\Users\Admin\AppData\Local\Temp\bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe
"{path}"
2⤵
- Suspicious use of WriteProcessMemory
PID:1112

C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
dw20.exe -x -s 376
3⤵
PID:1652

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpD75C.tmp
Filesize
1KB

MD5
60d891e0364196a5f2738953ef07ef42

SHA1
06af96aca98d8b5db63c77f11cbd5f93649ce048

SHA256
5923b0c530b4617d01dbe0ab89a919288b978550fc26905bbc61fe7912fcf2c3

SHA512
ab3d8c67554d832d92caf2f0a815b99d2c6c3f139705af8c9da4b955845e61787e5b1a1c7bbd9e6533080feaa5ead5fcf8d60b1396d811c204abbd394812d532

Download Submit
memory/668-54-0x0000000075D11000-0x0000000075D13000-memory.dmp

Filesize
8KB

Download
memory/668-55-0x0000000074550000-0x0000000074AFB000-memory.dmp

Filesize
5.7MB

Download
memory/668-56-0x0000000074550000-0x0000000074AFB000-memory.dmp

Filesize
5.7MB

Download
memory/668-70-0x0000000074550000-0x0000000074AFB000-memory.dmp

Filesize
5.7MB

Download
memory/780-57-0x0000000000000000-mapping.dmp

Download
memory/1112-63-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1112-62-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1112-60-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1112-64-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1112-65-0x000000000040C76E-mapping.dmp

Download
memory/1112-69-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1112-67-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1112-59-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1112-72-0x0000000074550000-0x0000000074AFB000-memory.dmp

Filesize
5.7MB

Download
memory/1112-75-0x0000000074550000-0x0000000074AFB000-memory.dmp

Filesize
5.7MB

Download
memory/1652-73-0x0000000000000000-mapping.dmp

Download

description	pid	process	target process
PID 668 wrote to memory of 780	668	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe	schtasks.exe
PID 668 wrote to memory of 780	668	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe	schtasks.exe
PID 668 wrote to memory of 780	668	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe	schtasks.exe
PID 668 wrote to memory of 780	668	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe	schtasks.exe
PID 668 wrote to memory of 1660	668	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe
PID 668 wrote to memory of 1660	668	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe
PID 668 wrote to memory of 1660	668	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe
PID 668 wrote to memory of 1660	668	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe
PID 668 wrote to memory of 1112	668	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe
PID 668 wrote to memory of 1112	668	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe
PID 668 wrote to memory of 1112	668	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe
PID 668 wrote to memory of 1112	668	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe
PID 668 wrote to memory of 1112	668	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe
PID 668 wrote to memory of 1112	668	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe
PID 668 wrote to memory of 1112	668	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe
PID 668 wrote to memory of 1112	668	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe
PID 668 wrote to memory of 1112	668	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe
PID 1112 wrote to memory of 1652	1112	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe	dw20.exe
PID 1112 wrote to memory of 1652	1112	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe	dw20.exe
PID 1112 wrote to memory of 1652	1112	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe	dw20.exe
PID 1112 wrote to memory of 1652	1112	bec67588dfd5e24d948112f922e527c8c76386c5e849d32c6aac3b08c193e5f8.exe	dw20.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads