asyncrat | 4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3

Analysis

max time kernel
148s
max time network
150s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
21/08/2026, 11:48

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General

Target
4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
Size 45KB
Sample260821-nyhs8abc38
SHA256 4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3
MD5 3e7864989bf01c32a74ca144aba37740
SHA1 338ec2cb64d5194d188dce31bf1a843df5a468bc
SHA512 6ab8adf4ca24460183a1983f9b4543247e9442a6e9e4ab310aaa99ae76844b332645d58b3c0721eb2d21d7f3da044c08aa9221e990b492367d9c8839dc4c864a
SSDEEP 768:0u2vpTD4U2ieWUsqfAmo2qjMzjHynaKPIsujb9gX3iMZTN9MIUVrLAgTBDZ8x:0u2vpTDe+2FnZsCbqXSyTN9JCAod8x
TLSH
T195231A003BE9C12BF2BE4F789DF26145867AB6632603D64D1CC411DB1713BC69A52AFE
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

e.streamforester.name:80
e.streamforester.name:22
e.streamforester.name:8080
e.streamforester.name:8880
e.streamforester.name:2052
e.streamforester.name:2082
e.streamforester.name:2086
e.streamforester.name:2095
e.streamforester.name:443
e.streamforester.name:2053
e.streamforester.name:2083
e.streamforester.name:2087
e.streamforester.name:2096
e.streamforester.name:8443
www.e.streamforester.name:80
www.e.streamforester.name:22
www.e.streamforester.name:8080
www.e.streamforester.name:8880
www.e.streamforester.name:2052
www.e.streamforester.name:2082
www.e.streamforester.name:2086
www.e.streamforester.name:2095
www.e.streamforester.name:443
www.e.streamforester.name:2053
www.e.streamforester.name:2083
www.e.streamforester.name:2087
www.e.streamforester.name:2096
www.e.streamforester.name:8443
melissa.e.streamforester.name:80
melissa.e.streamforester.name:22
melissa.e.streamforester.name:8080
melissa.e.streamforester.name:8880
melissa.e.streamforester.name:2052
melissa.e.streamforester.name:2082
melissa.e.streamforester.name:2086
melissa.e.streamforester.name:2095
melissa.e.streamforester.name:443
melissa.e.streamforester.name:2053
melissa.e.streamforester.name:2083
melissa.e.streamforester.name:2087
melissa.e.streamforester.name:2096
melissa.e.streamforester.name:8443
dridex.e.streamforester.name:80
dridex.e.streamforester.name:22
dridex.e.streamforester.name:8080
dridex.e.streamforester.name:8880
dridex.e.streamforester.name:2052
dridex.e.streamforester.name:2082
dridex.e.streamforester.name:2086
dridex.e.streamforester.name:2095
dridex.e.streamforester.name:443
dridex.e.streamforester.name:2053
dridex.e.streamforester.name:2083
dridex.e.streamforester.name:2087
dridex.e.streamforester.name:2096
dridex.e.streamforester.name:8443
emotet.e.streamforester.name:80
emotet.e.streamforester.name:22
emotet.e.streamforester.name:8080
emotet.e.streamforester.name:8880
emotet.e.streamforester.name:2052
emotet.e.streamforester.name:2082
emotet.e.streamforester.name:2086
emotet.e.streamforester.name:2095
emotet.e.streamforester.name:443
emotet.e.streamforester.name:2053
emotet.e.streamforester.name:2083
emotet.e.streamforester.name:2087
emotet.e.streamforester.name:2096
emotet.e.streamforester.name:8443

Mutex

O1asnACi2NtV

Attributes

delay
0
install
true
install_file
emmisq9.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
behavioral2/files/0x000e00000001c4bd-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
404	emmisq9.exe
124	emmisq9.exe

Outbound SSH connection to public host 2 TTPs 5 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
SSH destination	7	104.26.4.5:22
SSH destination	11	104.26.5.5:22
SSH destination	13	172.67.70.147:22
SSH destination	15	104.26.4.5:22
SSH destination	16	104.26.5.5:22

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
4584	cmd.exe
1052	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	emmisq9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	emmisq9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4232	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
4812	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
Token: SeDebugPrivilege	404	emmisq9.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4456 wrote to memory of 4584	4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe	89
PID 4456 wrote to memory of 1052	4456	4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe	91
PID 4584 wrote to memory of 4812	4584	cmd.exe	93
PID 1052 wrote to memory of 4232	1052	cmd.exe	94
PID 1052 wrote to memory of 124	1052	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe
"C:\Users\Admin\AppData\Local\Temp\4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4456
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "emmisq9" /tr '"C:\Users\Admin\AppData\Roaming\emmisq9.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4584
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "emmisq9" /tr '"C:\Users\Admin\AppData\Roaming\emmisq9.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4812
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp5A3C.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1052
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4232
- - C:\Users\Admin\AppData\Roaming\emmisq9.exe
    "C:\Users\Admin\AppData\Roaming\emmisq9.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:124

C:\Users\Admin\AppData\Roaming\emmisq9.exe
"C:\Users\Admin\AppData\Roaming\emmisq9.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:404

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Protocol Tunneling

T1572

Exfiltration

Impact

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Downloads

tmp5A3C.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp5A3C.tmp.bat
Size 151B
SHA256 2a5b5bf95f679ba027268d51393023371296d1af2694a4713a55a18f33a38c39
MD5 e3151195718a0a10e8c90d84d6f26566
SHA1 ca4fe5312360b1220aced6f76649d71212683e55
SHA512 b6a16881b77655a7cf2bd5eecad0011b8585f352d0d792302e0ff99074f4201b596fefd218e66648847dfeed60db6ca8e3b713aa358e6a6ea5a8cc646e1fd9b0
TLSH
T1F3C08C5252C9AA2EA805642316BAA98DA272A86A3F40AB009704840E1680488E09A242
MD5 SHA1 SHA512 TLSH

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emmisq9.exe

Path C:\Users\Admin\AppData\Roaming\emmisq9.exe
Size 45KB
SHA256 4fca439c965a1f7e99cbf172317ac5255c924dd5c4460db6f4154ced68d7a1d3
MD5 3e7864989bf01c32a74ca144aba37740
SHA1 338ec2cb64d5194d188dce31bf1a843df5a468bc
SHA512 6ab8adf4ca24460183a1983f9b4543247e9442a6e9e4ab310aaa99ae76844b332645d58b3c0721eb2d21d7f3da044c08aa9221e990b492367d9c8839dc4c864a
SSDEEP 768:0u2vpTD4U2ieWUsqfAmo2qjMzjHynaKPIsujb9gX3iMZTN9MIUVrLAgTBDZ8x:0u2vpTDe+2FnZsCbqXSyTN9JCAod8x
TLSH
T195231A003BE9C12BF2BE4F789DF26145867AB6632603D64D1CC411DB1713BC69A52AFE
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/404-12-0x0000000074490000-0x0000000074C4C000-memory.dmp

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memory/404-14-0x0000000074490000-0x0000000074C4C000-memory.dmp

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memory/4456-0-0x0000000074662000-0x0000000074663000-memory.dmp

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memory/4456-1-0x0000000000B80000-0x0000000000B92000-memory.dmp

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memory/4456-2-0x0000000074650000-0x0000000074E0C000-memory.dmp

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memory/4456-3-0x0000000005640000-0x00000000056DC000-memory.dmp

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memory/4456-8-0x0000000074650000-0x0000000074E0C000-memory.dmp

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