asyncrat | cc5488fc5c743d37268f55010af52d78bbaa3fafcb6353dba290b60982a17921

General

Target

AA8FC5D95C790933704E3CEF84C6EB89.exe
Size

710KB
MD5

aa8fc5d95c790933704e3cef84c6eb89
SHA1

4ab0502eb865233b7eaa693de35978b0f8c84328
SHA256

cc5488fc5c743d37268f55010af52d78bbaa3fafcb6353dba290b60982a17921
SHA512

8fd48c0cd12cdd5623990f67b06b4dffd07837c5ecf35cba8f996a9e456bf8ba0dadd34d9615deea6f6cb14e262b3a5927628a9af74b71d1cccbbef418579f5a
SSDEEP

12288:5maxpNBf2kBkD/BBy4gIpgTSV78GgJtnONe/T5fit:5maH+kBkDHzPpTp8GgJtn

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.6D

Botnet

Default

C2

seznam.zapto.org:6606

seznam.zapto.org:7707

seznam.zapto.org:8808

ronymahmoud.casacam.net:6606

ronymahmoud.casacam.net:7707

ronymahmoud.casacam.net:8808

Mutex

cznhhbaciwhxsrmpff

Attributes

delay
6
install
true
install_file
micresofte.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Async RAT payload 2 IoCs

rat

resource	yara_rule
behavioral1/memory/1952-4-0x0000000000510000-0x0000000000522000-memory.dmp	family_asyncrat
behavioral1/memory/1672-21-0x00000000003B0000-0x00000000003C2000-memory.dmp	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
1672	micresofte.exe

Loads dropped DLL 1 IoCs

pid	Process
2004	cmd.exe

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

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/Job

T1053

pid	Process
2400	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2696	timeout.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1952	AA8FC5D95C790933704E3CEF84C6EB89.exe
1952	AA8FC5D95C790933704E3CEF84C6EB89.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1952	AA8FC5D95C790933704E3CEF84C6EB89.exe
Token: SeDebugPrivilege	1672	micresofte.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1952 wrote to memory of 2644	1952	AA8FC5D95C790933704E3CEF84C6EB89.exe	28
PID 1952 wrote to memory of 2644	1952	AA8FC5D95C790933704E3CEF84C6EB89.exe	28
PID 1952 wrote to memory of 2644	1952	AA8FC5D95C790933704E3CEF84C6EB89.exe	28
PID 1952 wrote to memory of 2644	1952	AA8FC5D95C790933704E3CEF84C6EB89.exe	28
PID 1952 wrote to memory of 2004	1952	AA8FC5D95C790933704E3CEF84C6EB89.exe	30
PID 1952 wrote to memory of 2004	1952	AA8FC5D95C790933704E3CEF84C6EB89.exe	30
PID 1952 wrote to memory of 2004	1952	AA8FC5D95C790933704E3CEF84C6EB89.exe	30
PID 1952 wrote to memory of 2004	1952	AA8FC5D95C790933704E3CEF84C6EB89.exe	30
PID 2004 wrote to memory of 2696	2004	cmd.exe	33
PID 2004 wrote to memory of 2696	2004	cmd.exe	33
PID 2004 wrote to memory of 2696	2004	cmd.exe	33
PID 2004 wrote to memory of 2696	2004	cmd.exe	33
PID 2644 wrote to memory of 2400	2644	cmd.exe	32
PID 2644 wrote to memory of 2400	2644	cmd.exe	32
PID 2644 wrote to memory of 2400	2644	cmd.exe	32
PID 2644 wrote to memory of 2400	2644	cmd.exe	32
PID 2004 wrote to memory of 1672	2004	cmd.exe	34
PID 2004 wrote to memory of 1672	2004	cmd.exe	34
PID 2004 wrote to memory of 1672	2004	cmd.exe	34
PID 2004 wrote to memory of 1672	2004	cmd.exe	34

C:\Users\Admin\AppData\Local\Temp\AA8FC5D95C790933704E3CEF84C6EB89.exe
"C:\Users\Admin\AppData\Local\Temp\AA8FC5D95C790933704E3CEF84C6EB89.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1952
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /ru system /rl highest /tn AA8FC5D95C790933704E3CEF84C6EB89 /tr '"C:\Users\Admin\AppData\Roaming\micresofte.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2644
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /ru system /rl highest /tn AA8FC5D95C790933704E3CEF84C6EB89 /tr '"C:\Users\Admin\AppData\Roaming\micresofte.exe"'
    3⤵
    - Creates scheduled task(s)
    PID:2400
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp48C3.tmp.bat""
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2004
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2696
- - C:\Users\Admin\AppData\Roaming\micresofte.exe
    "C:\Users\Admin\AppData\Roaming\micresofte.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:1672

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

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\tmp48C3.tmp.bat

Filesize
154B

MD5
5ae27a06a101e77a01f701fa68030fb0

SHA1
911697d154d174b9d4a55751152b112bb118279f

SHA256
b71669bd750ceaecd0f81a144fc5c8593f56ea49eb730dfd7d319f76111174b3

SHA512
07898e7fd960d166c1bdef9a7b592fde7dc72ac2e4432a16fb638f6c86c7578ee48403519dd13effb59f469303d3b75ea582a502706585e3934de17d8e1f2486

Download Submit
C:\Users\Admin\AppData\Roaming\micresofte.exe

Filesize
710KB

MD5
aa8fc5d95c790933704e3cef84c6eb89

SHA1
4ab0502eb865233b7eaa693de35978b0f8c84328

SHA256
cc5488fc5c743d37268f55010af52d78bbaa3fafcb6353dba290b60982a17921

SHA512
8fd48c0cd12cdd5623990f67b06b4dffd07837c5ecf35cba8f996a9e456bf8ba0dadd34d9615deea6f6cb14e262b3a5927628a9af74b71d1cccbbef418579f5a

Download Submit
memory/1672-19-0x0000000074580000-0x0000000074C6E000-memory.dmp

Filesize
6.9MB

Download
memory/1672-18-0x0000000000270000-0x0000000000328000-memory.dmp

Filesize
736KB

Download
memory/1672-20-0x00000000048A0000-0x00000000048E0000-memory.dmp

Filesize
256KB

Download
memory/1672-21-0x00000000003B0000-0x00000000003C2000-memory.dmp

Filesize
72KB

Download
memory/1672-39-0x0000000074580000-0x0000000074C6E000-memory.dmp

Filesize
6.9MB

Download
memory/1672-40-0x00000000048A0000-0x00000000048E0000-memory.dmp

Filesize
256KB

Download
memory/1952-4-0x0000000000510000-0x0000000000522000-memory.dmp

Filesize
72KB

Download
memory/1952-3-0x0000000000B00000-0x0000000000B8E000-memory.dmp

Filesize
568KB

Download
memory/1952-14-0x0000000074540000-0x0000000074C2E000-memory.dmp

Filesize
6.9MB

Download
memory/1952-2-0x0000000001130000-0x0000000001170000-memory.dmp

Filesize
256KB

Download
memory/1952-1-0x0000000074540000-0x0000000074C2E000-memory.dmp

Filesize
6.9MB

Download
memory/1952-0-0x0000000001270000-0x0000000001328000-memory.dmp

Filesize
736KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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