asyncrat | e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b

General

Target
e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b.exe
Size 45KB
Sample260802-mjp4ba1ane
SHA256 e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b
MD5 ee6b890132ff37ebcaea2fb3e1179cba
SHA1 8476ff8153489e1cc3faa96a1a9a915bd519c957
SHA512 a13c763926acd3cbff65bd12474e574e49c2e7cad838aa8f9e1bad93dfdde960a351b528968c8dca6dbf0b76bfd4f25269b233d64bf1da70971ae2e113d41cff
SSDEEP 768:wuZ8pT1Uu4/cWUeT66mo2q1opt0CCM+d4CvS8PIMwjb3gX3i5naIn3hBa3NDA0Pm:wuZ8pT1tc2x/CFWBM4bQXSRaIXa9DA0O
TLSH
T117232B003BE9812BF2BE4F7468F26245867AF6633603D6491CC441DB5623FC69A43AFD
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
conti.hentaihay.blog:80
conti.hentaihay.blog:22
conti.hentaihay.blog:8080
conti.hentaihay.blog:8880
conti.hentaihay.blog:2052
conti.hentaihay.blog:2082
conti.hentaihay.blog:2086
conti.hentaihay.blog:2095
conti.hentaihay.blog:443
conti.hentaihay.blog:2053
conti.hentaihay.blog:2083
conti.hentaihay.blog:2087
conti.hentaihay.blog:2096
conti.hentaihay.blog:8443
triton.hentaihay.blog:80
triton.hentaihay.blog:22
triton.hentaihay.blog:8080
triton.hentaihay.blog:8880
triton.hentaihay.blog:2052
triton.hentaihay.blog:2082
triton.hentaihay.blog:2086
triton.hentaihay.blog:2095
triton.hentaihay.blog:443
triton.hentaihay.blog:2053
triton.hentaihay.blog:2083
triton.hentaihay.blog:2087
triton.hentaihay.blog:2096
triton.hentaihay.blog:8443

Mutex

7IlxCYGZzje6

Attributes

delay
0
install
true
install_file
vfgb.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 2 IoCs

rat

resource	yara_rule
behavioral1/files/0x0012000000024365-8.dat	family_asyncrat
behavioral1/memory/3368-10-0x0000000004DE0000-0x0000000004DF0000-memory.dmp	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-1-5-21-540052884-2969440504-464782435-1000\Control Panel\International\Geo\Nation	e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b.exe

Executes dropped EXE 2 IoCs

pid	Process
3368	vfgb.exe
4704	vfgb.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	25	172.67.158.187:22	3368	vfgb.exe
SSH destination	33	104.21.73.75:22	3368	vfgb.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
816	cmd.exe
3932	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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vfgb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vfgb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
2356	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
5052	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
1600	e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b.exe
1600	e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b.exe
1600	e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b.exe
1600	e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b.exe
1600	e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b.exe
1600	e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b.exe
1600	e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b.exe
1600	e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b.exe
1600	e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b.exe
1600	e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b.exe
1600	e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b.exe
1600	e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b.exe
1600	e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b.exe
1600	e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b.exe
1600	e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b.exe
1600	e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b.exe
1600	e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b.exe
1600	e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b.exe
1600	e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b.exe
1600	e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b.exe
1600	e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b.exe
1600	e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b.exe
1600	e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1600	e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b.exe
Token: SeDebugPrivilege	3368	vfgb.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1600 wrote to memory of 816	1600	e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b.exe	86
PID 1600 wrote to memory of 3932	1600	e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b.exe	88
PID 3932 wrote to memory of 2356	3932	cmd.exe	90
PID 816 wrote to memory of 5052	816	cmd.exe	91
PID 3932 wrote to memory of 4704	3932	cmd.exe	96

C:\Users\Admin\AppData\Local\Temp\e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b.exe
"C:\Users\Admin\AppData\Local\Temp\e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1600
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "vfgb" /tr '"C:\Users\Admin\AppData\Roaming\vfgb.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:816
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "vfgb" /tr '"C:\Users\Admin\AppData\Roaming\vfgb.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:5052
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp45DE.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3932
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2356
- - C:\Users\Admin\AppData\Roaming\vfgb.exe
    "C:\Users\Admin\AppData\Roaming\vfgb.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4704

C:\Users\Admin\AppData\Roaming\vfgb.exe
"C:\Users\Admin\AppData\Roaming\vfgb.exe"
1⤵
- Executes dropped EXE
- Outbound SSH connection to public host
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3368

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

Replay Monitor

Loading Replay Monitor...

Downloads

tmp45DE.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp45DE.tmp.bat
Size 148B
SHA256 abbda0f2fa620a9f0a6ee3d96370cb37865b5f68ed5a8dd715a49af5b5c43f25
MD5 04d10ea604097a7e3376c828d57b516c
SHA1 10daddbaa07c95f43e54a556759934e456f16f81
SHA512 fae104000ef4d1c2f092d64e45c535d1e058eb68d59fe755ef86d6991e9ebdafe983aaaffc569ba17a607d061b99e4063a0c0dc60ef6d72a324b726bfdb08263
TLSH
T179C02B4351C9EA0F3806285316FAE99C9173BC1D3F40FB10C704844E1280848F8D9342
MD5 SHA1 SHA512 TLSH

Submit Download

vfgb.exe

Path C:\Users\Admin\AppData\Roaming\vfgb.exe
Size 45KB
SHA256 e9fa220e06bbe7a197e8a82bb36cf9e1835bce616a6f5b304797479c89f2b59b
MD5 ee6b890132ff37ebcaea2fb3e1179cba
SHA1 8476ff8153489e1cc3faa96a1a9a915bd519c957
SHA512 a13c763926acd3cbff65bd12474e574e49c2e7cad838aa8f9e1bad93dfdde960a351b528968c8dca6dbf0b76bfd4f25269b233d64bf1da70971ae2e113d41cff
SSDEEP 768:wuZ8pT1Uu4/cWUeT66mo2q1opt0CCM+d4CvS8PIMwjb3gX3i5naIn3hBa3NDA0Pm:wuZ8pT1tc2x/CFWBM4bQXSRaIXa9DA0O
TLSH
T117232B003BE9812BF2BE4F7468F26245867AF6633603D6491CC441DB5623FC69A43AFD
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1600-0-0x0000000000160000-0x0000000000172000-memory.dmp

Download

memory/1600-1-0x0000000004C00000-0x0000000004C10000-memory.dmp

Download

memory/1600-2-0x0000000004B30000-0x0000000004BCC000-memory.dmp

Download

memory/3368-10-0x0000000004DE0000-0x0000000004DF0000-memory.dmp

Download

memory/3368-13-0x0000000004DE0000-0x0000000004DF0000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

Loading Replay Monitor...

Downloads