asyncrat | fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23

Analysis

max time kernel
148s
max time network
155s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
16/08/2026, 09:26

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General

Target
fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
Size 45KB
Sample260816-ld6cnsvapf
SHA256 fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23
MD5 83dd48511e1890df6f5d9c30706f6d02
SHA1 060d80440e0e215cac6f16096e7e32152929c2fb
SHA512 1a9a7203d6ffe80cac0b7d674fb6c198c97638bd9f327fd6f58632a743c2eeb0e52d558c7272068da7f65959b9bcd4a4ea2a9e9bcf19ebeba3600218fc74ac45
SSDEEP 768:IuI6epTroGtXWU/jmRmo2qTwO5QPCBAPSNjPIRzjbfgX3iu5pvRNwr2ZBDZFx:IuIjpTrlO23O5svSKR3boXSu5pvM2HdD
TLSH
T139232A003BE8812AF2BE5F7899F26145867AF6633603E9491CC451DB5713FC2DA426FE
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
ursnif.e.streamforester.name:80
ursnif.e.streamforester.name:22
ursnif.e.streamforester.name:8080
ursnif.e.streamforester.name:8880
ursnif.e.streamforester.name:2052
ursnif.e.streamforester.name:2082
ursnif.e.streamforester.name:2086
ursnif.e.streamforester.name:2095
ursnif.e.streamforester.name:443
ursnif.e.streamforester.name:2053
ursnif.e.streamforester.name:2083
ursnif.e.streamforester.name:2087
ursnif.e.streamforester.name:2096
ursnif.e.streamforester.name:8443
blacklotus.e.streamforester.name:80
blacklotus.e.streamforester.name:22
blacklotus.e.streamforester.name:8080
blacklotus.e.streamforester.name:8880
blacklotus.e.streamforester.name:2052
blacklotus.e.streamforester.name:2082
blacklotus.e.streamforester.name:2086
blacklotus.e.streamforester.name:2095
blacklotus.e.streamforester.name:443
blacklotus.e.streamforester.name:2053
blacklotus.e.streamforester.name:2083
blacklotus.e.streamforester.name:2087
blacklotus.e.streamforester.name:2096
blacklotus.e.streamforester.name:8443
mydoom.e.streamforester.name:80
mydoom.e.streamforester.name:22
mydoom.e.streamforester.name:8080
mydoom.e.streamforester.name:8880
mydoom.e.streamforester.name:2052
mydoom.e.streamforester.name:2082
mydoom.e.streamforester.name:2086
mydoom.e.streamforester.name:2095
mydoom.e.streamforester.name:443
mydoom.e.streamforester.name:2053
mydoom.e.streamforester.name:2083
mydoom.e.streamforester.name:2087
mydoom.e.streamforester.name:2096
mydoom.e.streamforester.name:8443
nanocore.e.streamforester.name:80
nanocore.e.streamforester.name:22
nanocore.e.streamforester.name:8080
nanocore.e.streamforester.name:8880
nanocore.e.streamforester.name:2052
nanocore.e.streamforester.name:2082
nanocore.e.streamforester.name:2086
nanocore.e.streamforester.name:2095
nanocore.e.streamforester.name:443
nanocore.e.streamforester.name:2053
nanocore.e.streamforester.name:2083
nanocore.e.streamforester.name:2087
nanocore.e.streamforester.name:2096
nanocore.e.streamforester.name:8443

Mutex

8xLADGVtQUne

Attributes

delay
0
install
true
install_file
ufmw0ou.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/0x000d00000001c4d8-10.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
3408	ufmw0ou.exe

Outbound SSH connection to public host 2 TTPs 3 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	172.67.70.147:22
SSH destination	9	104.26.4.5:22
SSH destination	10	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
5376	cmd.exe
2948	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 6 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ufmw0ou.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
2908	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
4744	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3288 wrote to memory of 5376	3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe	89
PID 3288 wrote to memory of 2948	3288	fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe	90
PID 5376 wrote to memory of 4744	5376	cmd.exe	93
PID 2948 wrote to memory of 2908	2948	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe
"C:\Users\Admin\AppData\Local\Temp\fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3288
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "ufmw0ou" /tr '"C:\Users\Admin\AppData\Roaming\ufmw0ou.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5376
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "ufmw0ou" /tr '"C:\Users\Admin\AppData\Roaming\ufmw0ou.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4744
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp7352.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2948
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2908
- - C:\Users\Admin\AppData\Roaming\ufmw0ou.exe
    "C:\Users\Admin\AppData\Roaming\ufmw0ou.exe"
    3⤵
    PID:2384

C:\Users\Admin\AppData\Roaming\ufmw0ou.exe
"C:\Users\Admin\AppData\Roaming\ufmw0ou.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3408

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

tmp7352.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp7352.tmp.bat
Size 151B
SHA256 a50e7a3355ef41f1a82df2c0a663601c0e50e24c821dec945661245670198839
MD5 bc6de28ce4ad6a2da1fa150b1dc2f227
SHA1 25f28e47fb27c53c4f0ad9b146c4a3d9d3e01959
SHA512 f3d1f3cf6dcb53851c01eac98da8568b586f22d95dc12da98ae1c7f7ac1bcd20afd587f10acfcebc9ecc747b449da268ac1f35b1aa9e37dce9da408815115413
TLSH
T1B6C02BC266C6EA0EB905541317FAE58C917A7E293F40FB00C308800D5280889F4DA381
MD5 SHA1 SHA512 TLSH

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ufmw0ou.exe

Path C:\Users\Admin\AppData\Roaming\ufmw0ou.exe
Size 45KB
SHA256 fbe5758fb9a2776382fb61ddf01f30770e656f09c84c26551310489808c65a23
MD5 83dd48511e1890df6f5d9c30706f6d02
SHA1 060d80440e0e215cac6f16096e7e32152929c2fb
SHA512 1a9a7203d6ffe80cac0b7d674fb6c198c97638bd9f327fd6f58632a743c2eeb0e52d558c7272068da7f65959b9bcd4a4ea2a9e9bcf19ebeba3600218fc74ac45
SSDEEP 768:IuI6epTroGtXWU/jmRmo2qTwO5QPCBAPSNjPIRzjbfgX3iu5pvRNwr2ZBDZFx:IuIjpTrlO23O5svSKR3boXSu5pvM2HdD
TLSH
T139232A003BE8812AF2BE5F7899F26145867AF6633603E9491CC451DB5713FC2DA426FE
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/3288-0-0x0000000074252000-0x0000000074253000-memory.dmp

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memory/3288-1-0x0000000000D70000-0x0000000000D82000-memory.dmp

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memory/3288-2-0x0000000074240000-0x00000000749FC000-memory.dmp

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memory/3288-3-0x0000000005790000-0x000000000582C000-memory.dmp

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memory/3288-8-0x0000000074240000-0x00000000749FC000-memory.dmp

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memory/3408-12-0x00000000740A0000-0x000000007485C000-memory.dmp

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memory/3408-14-0x00000000740A0000-0x000000007485C000-memory.dmp

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