asyncrat | 7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651

General

Target
7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651.exe
Size 45KB
Sample260804-j18efaap4x
SHA256 7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651
MD5 f563043ef6aaf64b202d8c38512a80cf
SHA1 4fe3117da0daa582c3b5e6bdd5983532fac49451
SHA512 b7421897b5e8d7cda0c1b9bc8d27ba55574e6d9b850680f22dcdb93ac2da379fc41b701d8f1bd9e24902e60801710248b484951d303826e1de06574876760ba9
SSDEEP 768:UuKWgSJTwU6NkWUGnaSmo2qA5Bz5U4x7PIgkjblgX3i+x1dXBDZcx:UuKWgSJTwRf2pj6gkbiXS+zvdcx
TLSH
T183231B003BE9C137F2BE4BB89CF26145857AF6632603D6495CC412DB5623FC68A426FE
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

sexviet3x.pro:80
sexviet3x.pro:22
sexviet3x.pro:8080
sexviet3x.pro:8880
sexviet3x.pro:2052
sexviet3x.pro:2082
sexviet3x.pro:2086
sexviet3x.pro:2095
sexviet3x.pro:443
sexviet3x.pro:2053
sexviet3x.pro:2083
sexviet3x.pro:2087
sexviet3x.pro:2096
sexviet3x.pro:8443
www.sexviet3x.pro:80
www.sexviet3x.pro:22
www.sexviet3x.pro:8080
www.sexviet3x.pro:8880
www.sexviet3x.pro:2052
www.sexviet3x.pro:2082
www.sexviet3x.pro:2086
www.sexviet3x.pro:2095
www.sexviet3x.pro:443
www.sexviet3x.pro:2053
www.sexviet3x.pro:2083
www.sexviet3x.pro:2087
www.sexviet3x.pro:2096
www.sexviet3x.pro:8443
malware.sexviet3x.pro:80
malware.sexviet3x.pro:22
malware.sexviet3x.pro:8080
malware.sexviet3x.pro:8880
malware.sexviet3x.pro:2052
malware.sexviet3x.pro:2082
malware.sexviet3x.pro:2086
malware.sexviet3x.pro:2095
malware.sexviet3x.pro:443
malware.sexviet3x.pro:2053
malware.sexviet3x.pro:2083
malware.sexviet3x.pro:2087
malware.sexviet3x.pro:2096
malware.sexviet3x.pro:8443
triton.sexviet3x.pro:80
triton.sexviet3x.pro:22
triton.sexviet3x.pro:8080
triton.sexviet3x.pro:8880
triton.sexviet3x.pro:2052
triton.sexviet3x.pro:2082
triton.sexviet3x.pro:2086
triton.sexviet3x.pro:2095
triton.sexviet3x.pro:443
triton.sexviet3x.pro:2053
triton.sexviet3x.pro:2083
triton.sexviet3x.pro:2087
triton.sexviet3x.pro:2096
triton.sexviet3x.pro:8443
rat.sexviet3x.pro:80
rat.sexviet3x.pro:22
rat.sexviet3x.pro:8080
rat.sexviet3x.pro:8880
rat.sexviet3x.pro:2052
rat.sexviet3x.pro:2082
rat.sexviet3x.pro:2086
rat.sexviet3x.pro:2095
rat.sexviet3x.pro:443
rat.sexviet3x.pro:2053
rat.sexviet3x.pro:2083
rat.sexviet3x.pro:2087
rat.sexviet3x.pro:2096
rat.sexviet3x.pro:8443

Mutex

Hnf5b6IG92DW

Attributes

delay
0
install
true
install_file
4dwzbdhd.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/0x00080000000245a7-8.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-1-5-21-540052884-2969440504-464782435-1000\Control Panel\International\Geo\Nation	7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651.exe

Executes dropped EXE 2 IoCs

pid	Process
4696	4dwzbdhd.exe
4672	4dwzbdhd.exe

Outbound SSH connection to public host 2 TTPs 1 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	50	5.61.208.88:22	4696	4dwzbdhd.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
4508	cmd.exe
2248	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	7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651.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	4dwzbdhd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4dwzbdhd.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
2364	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
4560	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
4892	7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651.exe
4892	7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651.exe
4892	7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651.exe
4892	7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651.exe
4892	7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651.exe
4892	7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651.exe
4892	7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651.exe
4892	7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651.exe
4892	7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651.exe
4892	7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651.exe
4892	7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651.exe
4892	7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651.exe
4892	7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651.exe
4892	7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651.exe
4892	7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651.exe
4892	7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651.exe
4892	7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651.exe
4892	7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651.exe
4892	7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651.exe
4892	7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651.exe
4892	7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651.exe
4892	7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651.exe
4892	7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4892	7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651.exe
Token: SeDebugPrivilege	4696	4dwzbdhd.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4892 wrote to memory of 4508	4892	7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651.exe	85
PID 4892 wrote to memory of 2248	4892	7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651.exe	87
PID 2248 wrote to memory of 2364	2248	cmd.exe	89
PID 4508 wrote to memory of 4560	4508	cmd.exe	90
PID 2248 wrote to memory of 4672	2248	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651.exe
"C:\Users\Admin\AppData\Local\Temp\7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4892
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "4dwzbdhd" /tr '"C:\Users\Admin\AppData\Roaming\4dwzbdhd.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4508
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "4dwzbdhd" /tr '"C:\Users\Admin\AppData\Roaming\4dwzbdhd.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4560
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp4561.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2248
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2364
- - C:\Users\Admin\AppData\Roaming\4dwzbdhd.exe
    "C:\Users\Admin\AppData\Roaming\4dwzbdhd.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4672

C:\Users\Admin\AppData\Roaming\4dwzbdhd.exe
"C:\Users\Admin\AppData\Roaming\4dwzbdhd.exe"
1⤵
- Executes dropped EXE
- Outbound SSH connection to public host
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:4696

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

tmp4561.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp4561.tmp.bat
Size 152B
SHA256 c87b9219db01e7de7e3a8dc8669926927499566b293ab9b8d343ee76dba6eaa0
MD5 9210694cdfc60c71f20245fec07d872e
SHA1 5f6e8434387b9576d89fbefa413a9ad35a9577ea
SHA512 dab54c9f8c7e7d273f81f62943afe07db2eefbaaf54b74aab480ad1241247605a3715da01cdff0efd69fe2fbebd464d6cb302dc325fe588aa8704f435cc20f42
TLSH
T1CBC02B52B1C9EA0E3805347306FBD99CE173BC1A3F44BB80D304404D52C0848F8D9382
MD5 SHA1 SHA512 TLSH

Submit Download

4dwzbdhd.exe

Path C:\Users\Admin\AppData\Roaming\4dwzbdhd.exe
Size 45KB
SHA256 7698ee60bd31fcc86bf4c4120fb64ad28ec4cc474429b54c745e5b4e9105b651
MD5 f563043ef6aaf64b202d8c38512a80cf
SHA1 4fe3117da0daa582c3b5e6bdd5983532fac49451
SHA512 b7421897b5e8d7cda0c1b9bc8d27ba55574e6d9b850680f22dcdb93ac2da379fc41b701d8f1bd9e24902e60801710248b484951d303826e1de06574876760ba9
SSDEEP 768:UuKWgSJTwU6NkWUGnaSmo2qA5Bz5U4x7PIgkjblgX3i+x1dXBDZcx:UuKWgSJTwRf2pj6gkbiXS+zvdcx
TLSH
T183231B003BE9C137F2BE4BB89CF26145857AF6632603D6495CC412DB5623FC68A426FE
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/4696-10-0x0000000005570000-0x0000000005580000-memory.dmp

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memory/4696-13-0x0000000005570000-0x0000000005580000-memory.dmp

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memory/4892-0-0x0000000000400000-0x0000000000412000-memory.dmp

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memory/4892-1-0x0000000004E30000-0x0000000004E40000-memory.dmp

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memory/4892-2-0x0000000004E40000-0x0000000004EDC000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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