asyncrat | f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe

General

Target
f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe.exe
Size 45KB
Sample260803-jmn4msek21
SHA256 f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe
MD5 220c1a3d981b6136669f86123364ed51
SHA1 28ba58c3b288a2b7ac6e28c684a7babd699a29af
SHA512 e894bd2dcfe7897c68881b22fd41ac1067a1bab961ffb4b0db48bd6b7ecb43a266b383079fd1b1ff0b2c091076a9a2e9ac1cd62aae1c0bc099f4126f39a4e222
SSDEEP 768:wuZ8pT1Uu4/cWUeT66mo2q1K8V1QpfEcPIYzjbigX3iVu9Ilc4eLx4/mFBDZMx:wuZ8pT1tc2x8ViBEhY3bFXSeOe94UdMx
TLSH
T15B233B003BE9823BF2BE4F789DF26245867EF2672603D5491CC4419B5623FC69A426FD
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

phimsexvnn.com:80
phimsexvnn.com:22
phimsexvnn.com:8080
phimsexvnn.com:8880
phimsexvnn.com:2052
phimsexvnn.com:2082
phimsexvnn.com:2086
phimsexvnn.com:2095
phimsexvnn.com:443
phimsexvnn.com:2053
phimsexvnn.com:2083
phimsexvnn.com:2087
phimsexvnn.com:2096
phimsexvnn.com:8443
www.phimsexvnn.com:80
www.phimsexvnn.com:22
www.phimsexvnn.com:8080
www.phimsexvnn.com:8880
www.phimsexvnn.com:2052
www.phimsexvnn.com:2082
www.phimsexvnn.com:2086
www.phimsexvnn.com:2095
www.phimsexvnn.com:443
www.phimsexvnn.com:2053
www.phimsexvnn.com:2083
www.phimsexvnn.com:2087
www.phimsexvnn.com:2096
www.phimsexvnn.com:8443
dridex.phimsexvnn.com:80
dridex.phimsexvnn.com:22
dridex.phimsexvnn.com:8080
dridex.phimsexvnn.com:8880
dridex.phimsexvnn.com:2052
dridex.phimsexvnn.com:2082
dridex.phimsexvnn.com:2086
dridex.phimsexvnn.com:2095
dridex.phimsexvnn.com:443
dridex.phimsexvnn.com:2053
dridex.phimsexvnn.com:2083
dridex.phimsexvnn.com:2087
dridex.phimsexvnn.com:2096
dridex.phimsexvnn.com:8443
ursnif.phimsexvnn.com:80
ursnif.phimsexvnn.com:22
ursnif.phimsexvnn.com:8080
ursnif.phimsexvnn.com:8880
ursnif.phimsexvnn.com:2052
ursnif.phimsexvnn.com:2082
ursnif.phimsexvnn.com:2086
ursnif.phimsexvnn.com:2095
ursnif.phimsexvnn.com:443
ursnif.phimsexvnn.com:2053
ursnif.phimsexvnn.com:2083
ursnif.phimsexvnn.com:2087
ursnif.phimsexvnn.com:2096
ursnif.phimsexvnn.com:8443

Mutex

7fKHdIZALrXG

Attributes

delay
0
install
true
install_file
fttx.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/0x000900000002434a-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-1-5-21-1074038928-2032447174-945360078-1000\Control Panel\International\Geo\Nation	f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe.exe

Executes dropped EXE 2 IoCs

pid	Process
3984	fttx.exe
4632	fttx.exe

Outbound SSH connection to public host 2 TTPs 4 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	48	172.67.132.249:22	3984	fttx.exe
SSH destination	60	104.21.5.48:22	3984	fttx.exe
SSH destination	107	172.67.132.249:22	3984	fttx.exe
SSH destination	119	104.21.5.48:22	3984	fttx.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
3012	cmd.exe
2744	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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fttx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fttx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4064	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
4028	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
2280	f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe.exe
2280	f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe.exe
2280	f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe.exe
2280	f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe.exe
2280	f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe.exe
2280	f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe.exe
2280	f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe.exe
2280	f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe.exe
2280	f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe.exe
2280	f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe.exe
2280	f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe.exe
2280	f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe.exe
2280	f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe.exe
2280	f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe.exe
2280	f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe.exe
2280	f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe.exe
2280	f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe.exe
2280	f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe.exe
2280	f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe.exe
2280	f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe.exe
2280	f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe.exe
2280	f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe.exe
2280	f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2280	f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe.exe
Token: SeDebugPrivilege	3984	fttx.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2280 wrote to memory of 2744	2280	f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe.exe	86
PID 2280 wrote to memory of 3012	2280	f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe.exe	88
PID 3012 wrote to memory of 4064	3012	cmd.exe	90
PID 2744 wrote to memory of 4028	2744	cmd.exe	91
PID 3012 wrote to memory of 4632	3012	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe.exe
"C:\Users\Admin\AppData\Local\Temp\f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2280
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "fttx" /tr '"C:\Users\Admin\AppData\Roaming\fttx.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2744
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "fttx" /tr '"C:\Users\Admin\AppData\Roaming\fttx.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4028
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9E2F.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3012
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4064
- - C:\Users\Admin\AppData\Roaming\fttx.exe
    "C:\Users\Admin\AppData\Roaming\fttx.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4632

C:\Users\Admin\AppData\Roaming\fttx.exe
"C:\Users\Admin\AppData\Roaming\fttx.exe"
1⤵
- Executes dropped EXE
- Outbound SSH connection to public host
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3984

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

tmp9E2F.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp9E2F.tmp.bat
Size 148B
SHA256 1ed5b344786b2cf61cbe4fa596099baeccea7237aa7c3700c6d960f837a9c16b
MD5 f11ac0637b75da281f1c0c34ca783fa5
SHA1 1b7b4e9317f558cc0c8e5d6fe6d42a42058ca2ef
SHA512 7cac1099f6d190ea7d582f698d00f6c122098d3e55919ebb64ac25ff05255561226c7b2544acb8346be74b148d000ad6842a834e6e3041ff4fa4a1bb5c480cd7
TLSH
T16FC02B43E5C5EA4E2809282302FBD5CD9172BE693F40BF80C70D400D1680888F0D9342
MD5 SHA1 SHA512 TLSH

Submit Download

fttx.exe

Path C:\Users\Admin\AppData\Roaming\fttx.exe
Size 45KB
SHA256 f317cf2e50a38026b11660e68542debab9c5486b6f1f4d4b3d52b86f576a5dbe
MD5 220c1a3d981b6136669f86123364ed51
SHA1 28ba58c3b288a2b7ac6e28c684a7babd699a29af
SHA512 e894bd2dcfe7897c68881b22fd41ac1067a1bab961ffb4b0db48bd6b7ecb43a266b383079fd1b1ff0b2c091076a9a2e9ac1cd62aae1c0bc099f4126f39a4e222
SSDEEP 768:wuZ8pT1Uu4/cWUeT66mo2q1K8V1QpfEcPIYzjbigX3iVu9Ilc4eLx4/mFBDZMx:wuZ8pT1tc2x8ViBEhY3bFXSeOe94UdMx
TLSH
T15B233B003BE9823BF2BE4F789DF26245867EF2672603D5491CC4419B5623FC69A426FD
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2280-0-0x00000000006F0000-0x0000000000702000-memory.dmp

Download

memory/2280-1-0x00000000050F0000-0x0000000005100000-memory.dmp

Download

memory/2280-2-0x0000000005100000-0x000000000519C000-memory.dmp

Download

memory/3984-10-0x00000000057B0000-0x00000000057C0000-memory.dmp

Download

memory/3984-13-0x00000000057B0000-0x00000000057C0000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

Loading Replay Monitor...

Downloads