asyncrat | 39ae1a73d9326d866c0ea79742243790ed3aeeceac161f1a23f7b0c7b84b4570

General

Target

6d717fe6e6123691c7d9ffee92625c2f.exe
Size

47KB
MD5

6d717fe6e6123691c7d9ffee92625c2f
SHA1

ac8e4b99c2398a48884805255f2fa90daf0dff3c
SHA256

39ae1a73d9326d866c0ea79742243790ed3aeeceac161f1a23f7b0c7b84b4570
SHA512

2b1d1ef8cc59b9916ccea5712609117d99576d59d3376bfe187eca473f988c0c76bc16dfff75d0e936af769963e13135f2f5f45ae7d4b62c619ffb88d20afdf8
SSDEEP

768:R/IO5VILWCyh+DiWtelDSN+iV08YbygejovEgK/J/ZVc6KN:R/PNWtKDs4zb1BnkJ/ZVclN

Score

10^/10

asyncrat redline default test infostealer rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

193.233.48.17:8848

Mutex

dfas9asdf8as8z

Attributes

delay
1
install
false
install_folder
%AppData%

aes.plain

Extracted

Family

redline

Botnet

test

C2

193.233.48.17:9832

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat
RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
infostealer redline

RedLine payload 3 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\build.exe	family_redline
C:\Users\Admin\AppData\Local\Temp\build.exe	family_redline
behavioral2/memory/4228-144-0x0000000000590000-0x00000000005AE000-memory.dmp	family_redline

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/4320-132-0x00000000001F0000-0x0000000000202000-memory.dmp	asyncrat

Executes dropped EXE 1 IoCs

Processes:

build.exe

pid process

4228 build.exe

pid	process
4228	build.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

6d717fe6e6123691c7d9ffee92625c2f.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	6d717fe6e6123691c7d9ffee92625c2f.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

powershell.exe6d717fe6e6123691c7d9ffee92625c2f.exebuild.exe

pid process

2480 powershell.exe
2480 powershell.exe
4320 6d717fe6e6123691c7d9ffee92625c2f.exe
4228 build.exe

pid	process
2480	powershell.exe
2480	powershell.exe
4320	6d717fe6e6123691c7d9ffee92625c2f.exe
4228	build.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

6d717fe6e6123691c7d9ffee92625c2f.exepowershell.exebuild.exe

description	pid	process
Token: SeDebugPrivilege	4320	6d717fe6e6123691c7d9ffee92625c2f.exe
Token: SeDebugPrivilege	2480	powershell.exe
Token: SeDebugPrivilege	4228	build.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

6d717fe6e6123691c7d9ffee92625c2f.execmd.exepowershell.exe

description	pid	process	target process
PID 4320 wrote to memory of 2280	4320	6d717fe6e6123691c7d9ffee92625c2f.exe	cmd.exe
PID 4320 wrote to memory of 2280	4320	6d717fe6e6123691c7d9ffee92625c2f.exe	cmd.exe
PID 2280 wrote to memory of 2480	2280	cmd.exe	powershell.exe
PID 2280 wrote to memory of 2480	2280	cmd.exe	powershell.exe
PID 2480 wrote to memory of 4228	2480	powershell.exe	build.exe
PID 2480 wrote to memory of 4228	2480	powershell.exe	build.exe
PID 2480 wrote to memory of 4228	2480	powershell.exe	build.exe

C:\Users\Admin\AppData\Local\Temp\6d717fe6e6123691c7d9ffee92625c2f.exe
"C:\Users\Admin\AppData\Local\Temp\6d717fe6e6123691c7d9ffee92625c2f.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4320
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /b powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\build.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2280
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\build.exe"'
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2480
  - - C:\Users\Admin\AppData\Local\Temp\build.exe
      "C:\Users\Admin\AppData\Local\Temp\build.exe"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4228

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\build.exe

Filesize
95KB

MD5
37ccecb56eb0d2db0a5159b5bbc3ec5b

SHA1
7ba3a1ef06bbd6b1444337ff58736aeeec6d4164

SHA256
8dfbcef9c1dfe6a9bbc7d3a97ba8ac8928e6b4abc83bbd49e67a33c061a119cc

SHA512
8f93b9dce515b51cfb61fbc21881a83d8623a30849195299759edc9c8c2f3898562d5f461bc15b22c1abc7a9b3ab430a9bfdd7d610cf24d842ce28d672c77354

Download Submit
C:\Users\Admin\AppData\Local\Temp\build.exe

Filesize
95KB

MD5
37ccecb56eb0d2db0a5159b5bbc3ec5b

SHA1
7ba3a1ef06bbd6b1444337ff58736aeeec6d4164

SHA256
8dfbcef9c1dfe6a9bbc7d3a97ba8ac8928e6b4abc83bbd49e67a33c061a119cc

SHA512
8f93b9dce515b51cfb61fbc21881a83d8623a30849195299759edc9c8c2f3898562d5f461bc15b22c1abc7a9b3ab430a9bfdd7d610cf24d842ce28d672c77354

Download Submit
memory/2280-137-0x0000000000000000-mapping.dmp

Download
memory/2480-143-0x00007FFF25800000-0x00007FFF262C1000-memory.dmp

Filesize
10.8MB

Download
memory/2480-138-0x0000000000000000-mapping.dmp

Download
memory/2480-139-0x000001BF7D340000-0x000001BF7D362000-memory.dmp

Filesize
136KB

Download
memory/4228-148-0x0000000005220000-0x000000000532A000-memory.dmp

Filesize
1.0MB

Download
memory/4228-147-0x0000000004F70000-0x0000000004FAC000-memory.dmp

Filesize
240KB

Download
memory/4228-151-0x0000000006490000-0x00000000064F6000-memory.dmp

Filesize
408KB

Download
memory/4228-141-0x0000000000000000-mapping.dmp

Download
memory/4228-145-0x00000000055F0000-0x0000000005C08000-memory.dmp

Filesize
6.1MB

Download
memory/4228-150-0x0000000006C00000-0x000000000712C000-memory.dmp

Filesize
5.2MB

Download
memory/4228-149-0x0000000006500000-0x00000000066C2000-memory.dmp

Filesize
1.8MB

Download
memory/4228-144-0x0000000000590000-0x00000000005AE000-memory.dmp

Filesize
120KB

Download
memory/4228-146-0x0000000004F10000-0x0000000004F22000-memory.dmp

Filesize
72KB

Download
memory/4320-133-0x00007FFF25800000-0x00007FFF262C1000-memory.dmp

Filesize
10.8MB

Download
memory/4320-136-0x0000000002440000-0x000000000245E000-memory.dmp

Filesize
120KB

Download
memory/4320-135-0x000000001BB30000-0x000000001BBA6000-memory.dmp

Filesize
472KB

Download
memory/4320-132-0x00000000001F0000-0x0000000000202000-memory.dmp

Filesize
72KB

Download
memory/4320-134-0x00007FFF25800000-0x00007FFF262C1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads