asyncrat | 74a3205e3a8f881af4b7b48d71854b2484eb9d3ea631e24b45c2c36278c187b8

General

Target

Doc#66202009475352576530141.pdf.exe
Size

414KB
MD5

b54eea6b86a4ea7a743e1db549ea54f9
SHA1

2291b8a0e39ca979d0373f98fd2ba8e86105da65
SHA256

9ff9a09c4e1ff0b737d630660b25335cded1fbe365628b5d6e59211e7d8ff53c
SHA512

d5a477a98e5d8939fbcd97d05585fcc6a8f6f8d5e9eb95bf1d220d2ff7fb89d34c8aa83b2708d54ce1b861feab79b39d7ad6ce25557a4e5c50df5173cac33e64

Score

10^/10

asyncrat together rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

TOGETHER

Mutex

chizzy25@/@!7^UPCAZ

Attributes

delay
3
install
false
install_folder
%AppData%
pastebin_config
https://pastebin.com/raw/HKYwiN9V

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/2036-64-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/2036-65-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/2036-66-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/2036-67-0x000000000040C76E-mapping.dmp	asyncrat
behavioral1/memory/2036-69-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/2036-71-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Suspicious use of SetThreadContext 1 IoCs

Processes:

Doc#66202009475352576530141.pdf.exe

description pid process target process

PID 1744 set thread context of 2036 1744 Doc#66202009475352576530141.pdf.exe RegSvcs.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

948 schtasks.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegSvcs.exe

description pid process

Token: SeDebugPrivilege 2036 RegSvcs.exe

description	pid	process	target process
PID 1744 set thread context of 2036	1744	Doc#66202009475352576530141.pdf.exe	RegSvcs.exe

pid	process
948	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	2036	RegSvcs.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

Doc#66202009475352576530141.pdf.exe

description	pid	process	target process
PID 1744 wrote to memory of 948	1744	Doc#66202009475352576530141.pdf.exe	schtasks.exe
PID 1744 wrote to memory of 948	1744	Doc#66202009475352576530141.pdf.exe	schtasks.exe
PID 1744 wrote to memory of 948	1744	Doc#66202009475352576530141.pdf.exe	schtasks.exe
PID 1744 wrote to memory of 948	1744	Doc#66202009475352576530141.pdf.exe	schtasks.exe
PID 1744 wrote to memory of 2036	1744	Doc#66202009475352576530141.pdf.exe	RegSvcs.exe
PID 1744 wrote to memory of 2036	1744	Doc#66202009475352576530141.pdf.exe	RegSvcs.exe
PID 1744 wrote to memory of 2036	1744	Doc#66202009475352576530141.pdf.exe	RegSvcs.exe
PID 1744 wrote to memory of 2036	1744	Doc#66202009475352576530141.pdf.exe	RegSvcs.exe
PID 1744 wrote to memory of 2036	1744	Doc#66202009475352576530141.pdf.exe	RegSvcs.exe
PID 1744 wrote to memory of 2036	1744	Doc#66202009475352576530141.pdf.exe	RegSvcs.exe
PID 1744 wrote to memory of 2036	1744	Doc#66202009475352576530141.pdf.exe	RegSvcs.exe
PID 1744 wrote to memory of 2036	1744	Doc#66202009475352576530141.pdf.exe	RegSvcs.exe
PID 1744 wrote to memory of 2036	1744	Doc#66202009475352576530141.pdf.exe	RegSvcs.exe
PID 1744 wrote to memory of 2036	1744	Doc#66202009475352576530141.pdf.exe	RegSvcs.exe
PID 1744 wrote to memory of 2036	1744	Doc#66202009475352576530141.pdf.exe	RegSvcs.exe
PID 1744 wrote to memory of 2036	1744	Doc#66202009475352576530141.pdf.exe	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\Doc#66202009475352576530141.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Doc#66202009475352576530141.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1744

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HfqSIphGzk" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC16C.tmp"
2⤵
- Creates scheduled task(s)
PID:948

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
2⤵
- Suspicious use of AdjustPrivilegeToken
PID:2036

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

Web Service

1

T1102

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpC16C.tmp
Filesize
1KB

MD5
13a13b3e549b69a7aa653b09ebf678ba

SHA1
2ac6363c4b4ee182b9369081ccd64b40aa573e25

SHA256
cb186d00f7f2941d41edc00377658b683fba9b38cb57af842fc82917165249a8

SHA512
908628cb06be01bbeefe23dcd9659cf73eb826ddb9abdcacd292d883ba8bfbebe604a2f04e8d69a096b777dc99e3c37c444e48ee5afaaa5df7e26848c7e4595b

Download Submit
memory/948-59-0x0000000000000000-mapping.dmp

Download
memory/1744-57-0x00000000003F0000-0x000000000041C000-memory.dmp

Filesize
176KB

Download
memory/1744-54-0x0000000001340000-0x00000000013AE000-memory.dmp

Filesize
440KB

Download
memory/1744-58-0x00000000004C0000-0x00000000004D2000-memory.dmp

Filesize
72KB

Download
memory/1744-56-0x00000000001E0000-0x00000000001F2000-memory.dmp

Filesize
72KB

Download
memory/1744-55-0x0000000075761000-0x0000000075763000-memory.dmp

Filesize
8KB

Download
memory/2036-61-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2036-62-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2036-64-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2036-65-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2036-66-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2036-67-0x000000000040C76E-mapping.dmp

Download
memory/2036-69-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2036-71-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads