asyncrat | 97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f

General

Target
97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f.exe
Size 45KB
Sample260804-2nbttascjd
SHA256 97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f
MD5 6c15bb5465b8281272f03e75b2faad54
SHA1 79cb0aab69df24f4e7637508aa0c8f71dc8a88c3
SHA512 62919d87c6d8b629c1e33d82f04eed4f4304ae99d79d36516a952b7e2553a60a54fb60f7f7d59ff155d8a1d25f92f8d9866b6cde5be39a973e5c452b4f92c6ee
SSDEEP 768:cuR0JTPUYkEWUmjWymo2q1NqyE0OFUwdJxIkDPI8zjbQgX3iVxWVhMhYBDZUx:cuR0JTPjY28qNTLM83bXXSDWVhZdUx
TLSH
T19D231A003BE9812BF2BE4B786DF25245867AF6732603D64E1CC451DB5623BC68A436FD
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

default command_and_control defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

hentaihay.blog:80
hentaihay.blog:22
hentaihay.blog:8080
hentaihay.blog:8880
hentaihay.blog:2052
hentaihay.blog:2082
hentaihay.blog:2086
hentaihay.blog:2095
hentaihay.blog:443
hentaihay.blog:2053
hentaihay.blog:2083
hentaihay.blog:2087
hentaihay.blog:2096
hentaihay.blog:8443
www.hentaihay.blog:80
www.hentaihay.blog:22
www.hentaihay.blog:8080
www.hentaihay.blog:8880
www.hentaihay.blog:2052
www.hentaihay.blog:2082
www.hentaihay.blog:2086
www.hentaihay.blog:2095
www.hentaihay.blog:443
www.hentaihay.blog:2053
www.hentaihay.blog:2083
www.hentaihay.blog:2087
www.hentaihay.blog:2096
www.hentaihay.blog:8443
cryptolocker.hentaihay.blog:80
cryptolocker.hentaihay.blog:22
cryptolocker.hentaihay.blog:8080
cryptolocker.hentaihay.blog:8880
cryptolocker.hentaihay.blog:2052
cryptolocker.hentaihay.blog:2082
cryptolocker.hentaihay.blog:2086
cryptolocker.hentaihay.blog:2095
cryptolocker.hentaihay.blog:443
cryptolocker.hentaihay.blog:2053
cryptolocker.hentaihay.blog:2083
cryptolocker.hentaihay.blog:2087
cryptolocker.hentaihay.blog:2096
cryptolocker.hentaihay.blog:8443
stuxnet.hentaihay.blog:80
stuxnet.hentaihay.blog:22
stuxnet.hentaihay.blog:8080
stuxnet.hentaihay.blog:8880
stuxnet.hentaihay.blog:2052
stuxnet.hentaihay.blog:2082
stuxnet.hentaihay.blog:2086
stuxnet.hentaihay.blog:2095
stuxnet.hentaihay.blog:443
stuxnet.hentaihay.blog:2053
stuxnet.hentaihay.blog:2083
stuxnet.hentaihay.blog:2087
stuxnet.hentaihay.blog:2096
stuxnet.hentaihay.blog:8443

Mutex

CHQbVSLh7AfK

Attributes

delay
0
install
true
install_file
ar12.exe
install_folder
%AppData%

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x00120000000233f3-9.dat	family_asyncrat

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2370214745-1838013427-2987045292-1000\Control Panel\International\Geo\Nation	97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f.exe

Executes dropped EXE 2 IoCs

pid	Process
2364	ar12.exe
2300	ar12.exe

Outbound SSH connection to public host 2 TTPs 2 IoCs

SSH is used for remote access. This may indicate SSH host discovery, encrypted C2 traffic, or data exfiltration.

command_and_control

Protocol Tunneling

T1572

Network Service Discovery

T1046

description	flow	ioc	pid	Process
SSH destination	55	104.21.73.75:22	2364	ar12.exe
SSH destination	66	172.67.158.187:22	2364	ar12.exe

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

System Information Discovery
T1082

Executes a command shell one-liner 1 TTPs 2 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
1412	cmd.exe
4280	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ar12.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ar12.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
1756	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
5004	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
992	97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f.exe
992	97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f.exe
992	97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f.exe
992	97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f.exe
992	97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f.exe
992	97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f.exe
992	97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f.exe
992	97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f.exe
992	97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f.exe
992	97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f.exe
992	97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f.exe
992	97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f.exe
992	97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f.exe
992	97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f.exe
992	97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f.exe
992	97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f.exe
992	97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f.exe
992	97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f.exe
992	97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f.exe
992	97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f.exe
992	97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f.exe
992	97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f.exe
992	97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	992	97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f.exe
Token: SeDebugPrivilege	2364	ar12.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 992 wrote to memory of 4280	992	97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f.exe	85
PID 992 wrote to memory of 1412	992	97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f.exe	87
PID 1412 wrote to memory of 1756	1412	cmd.exe	89
PID 4280 wrote to memory of 5004	4280	cmd.exe	90
PID 1412 wrote to memory of 2300	1412	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f.exe
"C:\Users\Admin\AppData\Local\Temp\97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:992
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "ar12" /tr '"C:\Users\Admin\AppData\Roaming\ar12.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4280
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "ar12" /tr '"C:\Users\Admin\AppData\Roaming\ar12.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:5004
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp1DE3.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1412
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:1756
- - C:\Users\Admin\AppData\Roaming\ar12.exe
    "C:\Users\Admin\AppData\Roaming\ar12.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2300

C:\Users\Admin\AppData\Roaming\ar12.exe
"C:\Users\Admin\AppData\Roaming\ar12.exe"
1⤵
- Executes dropped EXE
- Outbound SSH connection to public host
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2364

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Network Service Discovery

Query Registry

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Protocol Tunneling

1

T1572

Exfiltration

Impact

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Downloads

tmp1DE3.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp1DE3.tmp.bat
Size 148B
SHA256 25c12b5d2b7bb4c4afb8f03bdfc19716cd6b211db9db6fdb89725b06180eaf11
MD5 37e5e8fa7ab4792eb5c6a21ea219c5ec
SHA1 c05e9e82d5191467dfdf35b02c2a37254a4baa71
SHA512 966d2a5c275345d78163a0ce5a084846c3586345d7dc994e5eca47c3354a2200cb700bebb049acbf438d7412fe329226fe90dcf6b6ceaf984aa467aad7501448
TLSH
T182C02B4261C5EF6E6909342302FED59CD172AC193F40BB10C704414D2280858F4DD341
MD5 SHA1 SHA512 TLSH

Submit Download

ar12.exe

Path C:\Users\Admin\AppData\Roaming\ar12.exe
Size 45KB
SHA256 97ad6a4e37dfc6777fe245cf66829bcf0ccc2f8ed3adb8754f706eb054c3101f
MD5 6c15bb5465b8281272f03e75b2faad54
SHA1 79cb0aab69df24f4e7637508aa0c8f71dc8a88c3
SHA512 62919d87c6d8b629c1e33d82f04eed4f4304ae99d79d36516a952b7e2553a60a54fb60f7f7d59ff155d8a1d25f92f8d9866b6cde5be39a973e5c452b4f92c6ee
SSDEEP 768:cuR0JTPUYkEWUmjWymo2q1NqyE0OFUwdJxIkDPI8zjbQgX3iVxWVhMhYBDZUx:cuR0JTPjY28qNTLM83bXXSDWVhZdUx
TLSH
T19D231A003BE9812BF2BE4B786DF25245867AF6732603D64E1CC451DB5623BC68A436FD
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/992-0-0x0000000000B20000-0x0000000000B32000-memory.dmp

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memory/992-1-0x0000000005630000-0x0000000005640000-memory.dmp

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memory/992-2-0x00000000054F0000-0x000000000558C000-memory.dmp

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memory/2364-10-0x0000000004B80000-0x0000000004B90000-memory.dmp

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memory/2364-13-0x0000000004B80000-0x0000000004B90000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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