asyncrat | e17aa5e68d9acc532fc49febca4c7072496df5e47183e3d10d8f89b31c160cf5

General

Target

SeroXen.exe
Size

158KB
MD5

9fbd542a485a60bc5f9dd053c6917b3c
SHA1

b02791c1f6d06133b91f047c5131469502247924
SHA256

e17aa5e68d9acc532fc49febca4c7072496df5e47183e3d10d8f89b31c160cf5
SHA512

f51e3fd84a3d0d059777fcf44a6154a33b6eee94c40065d5cf454a3489230c1daf4ed3c65f134f3ebcf1c024d485c4a270041567932fc9d06d1998a6298a5b3b
SSDEEP

3072:YuGkTQaI2ObNc3RnbzgF50mmEuxnetCje3ew33Wv1x:YuGixl3RnbcH0cuxetC+33Wvz

Score

10^/10

asyncrat hawkeye async keylogger rat spyware stealer trojan

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Async

C2

140.238.91.110:42341

Mutex

GW7yTStHluEa

Attributes

delay
3
install
true
install_file
WindowsUpdate.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
HawkEye
HawkEye is a malware kit that has seen continuous development since at least 2013.
keylogger trojan stealer spyware hawkeye

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
\Users\Admin\AppData\Roaming\WindowsUpdate.exe	family_asyncrat

Executes dropped EXE 1 IoCs

Processes:

WindowsUpdate.exe

pid process

2524 WindowsUpdate.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

2576 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

Processes:

schtasks.exe

pid process

2504 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1752 timeout.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

SeroXen.exe

pid process

1300 SeroXen.exe
1300 SeroXen.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

SeroXen.exeWindowsUpdate.exe

description pid process

Token: SeDebugPrivilege 1300 SeroXen.exe
Token: SeDebugPrivilege 2524 WindowsUpdate.exe
Token: SeDebugPrivilege 2524 WindowsUpdate.exe

pid	process
2524	WindowsUpdate.exe

pid	process
2576	cmd.exe

pid	process
2504	schtasks.exe

pid	process
1752	timeout.exe

pid	process
1300	SeroXen.exe
1300	SeroXen.exe

description	pid	process
Token: SeDebugPrivilege	1300	SeroXen.exe
Token: SeDebugPrivilege	2524	WindowsUpdate.exe
Token: SeDebugPrivilege	2524	WindowsUpdate.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

SeroXen.execmd.execmd.exe

description	pid	process	target process
PID 1300 wrote to memory of 2916	1300	SeroXen.exe	cmd.exe
PID 1300 wrote to memory of 2916	1300	SeroXen.exe	cmd.exe
PID 1300 wrote to memory of 2916	1300	SeroXen.exe	cmd.exe
PID 1300 wrote to memory of 2916	1300	SeroXen.exe	cmd.exe
PID 1300 wrote to memory of 2576	1300	SeroXen.exe	cmd.exe
PID 1300 wrote to memory of 2576	1300	SeroXen.exe	cmd.exe
PID 1300 wrote to memory of 2576	1300	SeroXen.exe	cmd.exe
PID 1300 wrote to memory of 2576	1300	SeroXen.exe	cmd.exe
PID 2916 wrote to memory of 2504	2916	cmd.exe	schtasks.exe
PID 2916 wrote to memory of 2504	2916	cmd.exe	schtasks.exe
PID 2916 wrote to memory of 2504	2916	cmd.exe	schtasks.exe
PID 2916 wrote to memory of 2504	2916	cmd.exe	schtasks.exe
PID 2576 wrote to memory of 1752	2576	cmd.exe	timeout.exe
PID 2576 wrote to memory of 1752	2576	cmd.exe	timeout.exe
PID 2576 wrote to memory of 1752	2576	cmd.exe	timeout.exe
PID 2576 wrote to memory of 1752	2576	cmd.exe	timeout.exe
PID 2576 wrote to memory of 2524	2576	cmd.exe	WindowsUpdate.exe
PID 2576 wrote to memory of 2524	2576	cmd.exe	WindowsUpdate.exe
PID 2576 wrote to memory of 2524	2576	cmd.exe	WindowsUpdate.exe
PID 2576 wrote to memory of 2524	2576	cmd.exe	WindowsUpdate.exe
PID 2576 wrote to memory of 2524	2576	cmd.exe	WindowsUpdate.exe
PID 2576 wrote to memory of 2524	2576	cmd.exe	WindowsUpdate.exe
PID 2576 wrote to memory of 2524	2576	cmd.exe	WindowsUpdate.exe

C:\Users\Admin\AppData\Local\Temp\SeroXen.exe
"C:\Users\Admin\AppData\Local\Temp\SeroXen.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1300
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "WindowsUpdate" /tr '"C:\Users\Admin\AppData\Roaming\WindowsUpdate.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2916
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "WindowsUpdate" /tr '"C:\Users\Admin\AppData\Roaming\WindowsUpdate.exe"'
    3⤵
    - Creates scheduled task(s)
    PID:2504
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpA2C5.tmp.bat""
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2576
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:1752
- - C:\Users\Admin\AppData\Roaming\WindowsUpdate.exe
    "C:\Users\Admin\AppData\Roaming\WindowsUpdate.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2524

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\tmpA2C5.tmp.bat

Filesize
157B

MD5
b674335fa80ae0c1efcb9f78183ba87d

SHA1
89e781342d286b3752050ea4e1e81619d5c8bcb9

SHA256
d3c13fbfc42fee8cfd7754502429129e121614b7206ebb4d6953277bff01f083

SHA512
ddfc39fa710d18b531d50413fb52e34ed39d6d44b6afdab631eb1c71e4d076ad88d8e2e46fe4a4d46c7e026dd5fac28262880f7eb14614ec90b4223151ee6443

Download Submit
\Users\Admin\AppData\Roaming\WindowsUpdate.exe

Filesize
158KB

MD5
9fbd542a485a60bc5f9dd053c6917b3c

SHA1
b02791c1f6d06133b91f047c5131469502247924

SHA256
e17aa5e68d9acc532fc49febca4c7072496df5e47183e3d10d8f89b31c160cf5

SHA512
f51e3fd84a3d0d059777fcf44a6154a33b6eee94c40065d5cf454a3489230c1daf4ed3c65f134f3ebcf1c024d485c4a270041567932fc9d06d1998a6298a5b3b

Download Submit
memory/1300-0-0x0000000000310000-0x000000000033E000-memory.dmp

Filesize
184KB

Download
memory/1300-1-0x0000000073FF0000-0x00000000746DE000-memory.dmp

Filesize
6.9MB

Download
memory/1300-2-0x0000000004B80000-0x0000000004BC0000-memory.dmp

Filesize
256KB

Download
memory/1300-12-0x0000000073FF0000-0x00000000746DE000-memory.dmp

Filesize
6.9MB

Download
memory/2524-16-0x0000000001000000-0x000000000102E000-memory.dmp

Filesize
184KB

Download
memory/2524-17-0x0000000073FA0000-0x000000007468E000-memory.dmp

Filesize
6.9MB

Download
memory/2524-18-0x0000000004DF0000-0x0000000004E30000-memory.dmp

Filesize
256KB

Download
memory/2524-19-0x0000000073FA0000-0x000000007468E000-memory.dmp

Filesize
6.9MB

Download
memory/2524-20-0x0000000004DF0000-0x0000000004E30000-memory.dmp

Filesize
256KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads