asyncrat | 7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28

General

Target
7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28.exe
Size 45KB
Sample260804-vtmd6swbkc
SHA256 7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28
MD5 7679b85e0b566f08fdf2f008c52ff224
SHA1 bfb3f67ff1f28ee30fba48ebb02625a7421918e5
SHA512 989cbc9d51bc09594d24c22d48d99b0aa3c83b2191220d69be198a8a259034bab750a2d0e0885074450210165a4934ee224402afa06ce63656ead9d0de6b5784
SSDEEP 768:MuLAZTnAkuSWUYzG8mo2qFw3HO4SNMOPI0azjb0gb3iFiDJnpQyrjBDZEx:MuLAZTnbg2R+JM30a3bbbSinDBdEx
TLSH
T1F0233B003BE8812BF2BE5F789DF261458A7AF2633603D94A1CC452D75713FC69A426F9
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
emotet.hentaihay.blog:80
emotet.hentaihay.blog:22
emotet.hentaihay.blog:8080
emotet.hentaihay.blog:8880
emotet.hentaihay.blog:2052
emotet.hentaihay.blog:2082
emotet.hentaihay.blog:2086
emotet.hentaihay.blog:2095
emotet.hentaihay.blog:443
emotet.hentaihay.blog:2053
emotet.hentaihay.blog:2083
emotet.hentaihay.blog:2087
emotet.hentaihay.blog:2096
emotet.hentaihay.blog:8443
malware.hentaihay.blog:80
malware.hentaihay.blog:22
malware.hentaihay.blog:8080
malware.hentaihay.blog:8880
malware.hentaihay.blog:2052
malware.hentaihay.blog:2082
malware.hentaihay.blog:2086
malware.hentaihay.blog:2095
malware.hentaihay.blog:443
malware.hentaihay.blog:2053
malware.hentaihay.blog:2083
malware.hentaihay.blog:2087
malware.hentaihay.blog:2096
malware.hentaihay.blog:8443
hacker.hentaihay.blog:80
hacker.hentaihay.blog:22
hacker.hentaihay.blog:8080
hacker.hentaihay.blog:8880
hacker.hentaihay.blog:2052
hacker.hentaihay.blog:2082
hacker.hentaihay.blog:2086
hacker.hentaihay.blog:2095
hacker.hentaihay.blog:443
hacker.hentaihay.blog:2053
hacker.hentaihay.blog:2083
hacker.hentaihay.blog:2087
hacker.hentaihay.blog:2096
hacker.hentaihay.blog:8443

Mutex

ranDj4FvlO4x

Attributes

delay
0
install
true
install_file
i3s7n.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/0x000a0000000242fc-8.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-1-5-21-668679576-120646659-2289335452-1000\Control Panel\International\Geo\Nation	7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28.exe

Executes dropped EXE 2 IoCs

pid	Process
1272	i3s7n.exe
2196	i3s7n.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	45	104.21.73.75:22	1272	i3s7n.exe
SSH destination	54	172.67.158.187:22	1272	i3s7n.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
3852	cmd.exe
724	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	7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	i3s7n.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	i3s7n.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4048	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
368	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
2852	7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28.exe
2852	7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28.exe
2852	7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28.exe
2852	7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28.exe
2852	7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28.exe
2852	7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28.exe
2852	7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28.exe
2852	7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28.exe
2852	7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28.exe
2852	7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28.exe
2852	7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28.exe
2852	7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28.exe
2852	7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28.exe
2852	7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28.exe
2852	7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28.exe
2852	7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28.exe
2852	7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28.exe
2852	7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28.exe
2852	7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28.exe
2852	7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28.exe
2852	7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28.exe
2852	7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28.exe
2852	7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2852	7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28.exe
Token: SeDebugPrivilege	1272	i3s7n.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2852 wrote to memory of 3852	2852	7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28.exe	86
PID 2852 wrote to memory of 724	2852	7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28.exe	88
PID 724 wrote to memory of 4048	724	cmd.exe	90
PID 3852 wrote to memory of 368	3852	cmd.exe	91
PID 724 wrote to memory of 2196	724	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28.exe
"C:\Users\Admin\AppData\Local\Temp\7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2852
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "i3s7n" /tr '"C:\Users\Admin\AppData\Roaming\i3s7n.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3852
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "i3s7n" /tr '"C:\Users\Admin\AppData\Roaming\i3s7n.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:368
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpDADF.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:724
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4048
- - C:\Users\Admin\AppData\Roaming\i3s7n.exe
    "C:\Users\Admin\AppData\Roaming\i3s7n.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2196

C:\Users\Admin\AppData\Roaming\i3s7n.exe
"C:\Users\Admin\AppData\Roaming\i3s7n.exe"
1⤵
- Executes dropped EXE
- Outbound SSH connection to public host
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:1272

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

tmpDADF.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpDADF.tmp.bat
Size 149B
SHA256 93f18101192be9ec837c3ddeea5cff573aaac997ab46c73bcfa8f6b7a1bd241d
MD5 009389cadcf908a5accfa3e5977a7bf1
SHA1 4362b15b1485c2a1f7e12d0d14e0ab8b75e7e0a6
SHA512 310c5f432bfd5f8b277b7e31057643cc5765f7a8631864c5fa78da21e70c79d8d9760dc7791039766c2d597a859aae0b772c6f4176890e4295c7fd39e4c59ce5
TLSH
T164C02B4251C6EA2E6C1B941316FED49CE5726C593F40BF00C308801E16C0448F4EA343
MD5 SHA1 SHA512 TLSH

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i3s7n.exe

Path C:\Users\Admin\AppData\Roaming\i3s7n.exe
Size 45KB
SHA256 7557a5f6cad2998450cf760a384a50cc4fe890aa6a5066d4ae6ce8b8a4c10a28
MD5 7679b85e0b566f08fdf2f008c52ff224
SHA1 bfb3f67ff1f28ee30fba48ebb02625a7421918e5
SHA512 989cbc9d51bc09594d24c22d48d99b0aa3c83b2191220d69be198a8a259034bab750a2d0e0885074450210165a4934ee224402afa06ce63656ead9d0de6b5784
SSDEEP 768:MuLAZTnAkuSWUYzG8mo2qFw3HO4SNMOPI0azjb0gb3iFiDJnpQyrjBDZEx:MuLAZTnbg2R+JM30a3bbbSinDBdEx
TLSH
T1F0233B003BE8812BF2BE5F789DF261458A7AF2633603D94A1CC452D75713FC69A426F9
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1272-10-0x0000000004BA0000-0x0000000004BB0000-memory.dmp

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memory/1272-13-0x0000000004BA0000-0x0000000004BB0000-memory.dmp

Download

memory/2852-0-0x00000000003F0000-0x0000000000402000-memory.dmp

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memory/2852-1-0x0000000004D60000-0x0000000004D70000-memory.dmp

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memory/2852-2-0x0000000004E10000-0x0000000004EAC000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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