asyncrat | 599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315

Analysis

max time kernel
60s
max time network
59s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260618-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260618-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
26/06/2026, 19:15

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General

Target
599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
Size 45KB
Sample260626-xypffaes8v
SHA256 599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315
MD5 54df0e426498cc031d501946b24a6828
SHA1 02729169ddc688791125318f73910ceb529d6ebf
SHA512 5a43bcebb933155366cbc2a995c7d0f77d5e2f33612dbdcb43145de991da99f377e07ad686ff8a1150e1f5a474987253abc4615306e2dbce6b79422509986190
SSDEEP 768:QuflpT8AkKuWUch7wmo2q9jwD/y/aqPIazjbRgX3iKSOMkLK7BDZTx:QuflpT8Hv2gkha3beXSoLKtdTx
TLSH
T162232B003BE9C12BF2BE5F789DF26105867AF6632A03D64D1CC4519B5713BC68A426FE
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

default defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

phim.im:80
phim.im:22
phim.im:8080
phim.im:8880
phim.im:2052
phim.im:2082
phim.im:2086
phim.im:2095
phim.im:443
phim.im:2053
phim.im:2083
phim.im:2087
phim.im:2096
phim.im:8443
www.phim.im:80
www.phim.im:22
www.phim.im:8080
www.phim.im:8880
www.phim.im:2052
www.phim.im:2082
www.phim.im:2086
www.phim.im:2095
www.phim.im:443
www.phim.im:2053
www.phim.im:2083
www.phim.im:2087
www.phim.im:2096
www.phim.im:8443
trisis.phim.im:80
trisis.phim.im:22
trisis.phim.im:8080
trisis.phim.im:8880
trisis.phim.im:2052
trisis.phim.im:2082
trisis.phim.im:2086
trisis.phim.im:2095
trisis.phim.im:443
trisis.phim.im:2053
trisis.phim.im:2083
trisis.phim.im:2087
trisis.phim.im:2096
trisis.phim.im:8443
wannacry.phim.im:80
wannacry.phim.im:22
wannacry.phim.im:8080
wannacry.phim.im:8880
wannacry.phim.im:2052
wannacry.phim.im:2082
wannacry.phim.im:2086
wannacry.phim.im:2095
wannacry.phim.im:443
wannacry.phim.im:2053
wannacry.phim.im:2083
wannacry.phim.im:2087
wannacry.phim.im:2096
wannacry.phim.im:8443

Mutex

R7lcVLiIERQP

Attributes

delay
0
install
true
install_file
c3ysv85.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/0x000d00000001c68e-11.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
3476	c3ysv85.exe
4780	c3ysv85.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c3ysv85.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c3ysv85.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.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	timeout.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4992	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
2868	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
Token: SeDebugPrivilege	3476	c3ysv85.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1104 wrote to memory of 5400	1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe	90
PID 1104 wrote to memory of 4916	1104	599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe	91
PID 4916 wrote to memory of 4992	4916	cmd.exe	94
PID 5400 wrote to memory of 2868	5400	cmd.exe	95
PID 4916 wrote to memory of 4780	4916	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe
"C:\Users\Admin\AppData\Local\Temp\599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1104
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "c3ysv85" /tr '"C:\Users\Admin\AppData\Roaming\c3ysv85.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5400
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "c3ysv85" /tr '"C:\Users\Admin\AppData\Roaming\c3ysv85.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2868
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp6CAF.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4916
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4992
- - C:\Users\Admin\AppData\Roaming\c3ysv85.exe
    "C:\Users\Admin\AppData\Roaming\c3ysv85.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4780

C:\Users\Admin\AppData\Roaming\c3ysv85.exe
"C:\Users\Admin\AppData\Roaming\c3ysv85.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3476

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

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

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

tmp6CAF.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp6CAF.tmp.bat
Size 151B
SHA256 576d8e6f2a855773923369f50325dcdb5d4f51eb4a8d5f71a5fdfd459c1be3f5
MD5 886a98ac888bb2225f9dc8578c9a4e78
SHA1 f6a6f501283295a2598c2f79666c0f8b9a7732fa
SHA512 29d4f4e8bede0bde345abc6b962d2facea2658d9cebe6c0bd7339e33b7cbc8acaf97e79b5be53e4be690a4a9a35ee54f08aa8613f105a06803d01b7b229e1279
TLSH
T109C02B8261C6EE0F290D241702FBD69C91B26C193F82BF40C304406D1284948F0D93C2
MD5 SHA1 SHA512 TLSH

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c3ysv85.exe

Path C:\Users\Admin\AppData\Roaming\c3ysv85.exe
Size 45KB
SHA256 599789c46543b6ddfbaf9d2172782c5b945cfb12e27201dbe64ded1d73f08315
MD5 54df0e426498cc031d501946b24a6828
SHA1 02729169ddc688791125318f73910ceb529d6ebf
SHA512 5a43bcebb933155366cbc2a995c7d0f77d5e2f33612dbdcb43145de991da99f377e07ad686ff8a1150e1f5a474987253abc4615306e2dbce6b79422509986190
SSDEEP 768:QuflpT8AkKuWUch7wmo2q9jwD/y/aqPIazjbRgX3iKSOMkLK7BDZTx:QuflpT8Hv2gkha3beXSoLKtdTx
TLSH
T162232B003BE9C12BF2BE5F789DF26105867AF6632A03D64D1CC4519B5713BC68A426FE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1104-0-0x0000000074B72000-0x0000000074B73000-memory.dmp

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memory/1104-1-0x0000000000AD0000-0x0000000000AE2000-memory.dmp

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memory/1104-2-0x0000000074B60000-0x000000007531C000-memory.dmp

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memory/1104-3-0x0000000005550000-0x00000000055EC000-memory.dmp

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memory/1104-8-0x0000000074B60000-0x000000007531C000-memory.dmp

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memory/3476-12-0x00000000749F0000-0x00000000751AC000-memory.dmp

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memory/3476-14-0x00000000749F0000-0x00000000751AC000-memory.dmp

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