asyncrat | 2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc

Analysis

max time kernel
150s
max time network
152s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
17/07/2026, 14:08

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General

Target
2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
Size 45KB
Sample260717-rfxffacy5n
SHA256 2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc
MD5 b3f2f7c840305a238d56deb343436c7c
SHA1 23c7a0b4647bfd2f7c5e361f20cb8489ca17aa55
SHA512 82eb0e8c251994c69879bce477d1c7530f4f57bf44cadfd00f569ee21111141b587a90de8eb236f270fcaee075ecc16575abacf26ef5a8b5439287ceaf512c46
SSDEEP 768:RuxkJTVmU5EkWUGMKSmo2q1zGsGx8OHuPI2zjbCg/3igtuQFazOBDZcx:RuxkJTgip2+ez323bl/SgtRFa8dcx
TLSH
T14E232A003BE9822BF2BE4FB498F26145867EF5637603D54D2CC442DB5623BC69A426FD
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

phimsexvn.mobi:80
phimsexvn.mobi:22
phimsexvn.mobi:8080
phimsexvn.mobi:8880
phimsexvn.mobi:2052
phimsexvn.mobi:2082
phimsexvn.mobi:2086
phimsexvn.mobi:2095
phimsexvn.mobi:443
phimsexvn.mobi:2053
phimsexvn.mobi:2083
phimsexvn.mobi:2087
phimsexvn.mobi:2096
phimsexvn.mobi:8443
www.phimsexvn.mobi:80
www.phimsexvn.mobi:22
www.phimsexvn.mobi:8080
www.phimsexvn.mobi:8880
www.phimsexvn.mobi:2052
www.phimsexvn.mobi:2082
www.phimsexvn.mobi:2086
www.phimsexvn.mobi:2095
www.phimsexvn.mobi:443
www.phimsexvn.mobi:2053
www.phimsexvn.mobi:2083
www.phimsexvn.mobi:2087
www.phimsexvn.mobi:2096
www.phimsexvn.mobi:8443
emotet.phimsexvn.mobi:80
emotet.phimsexvn.mobi:22
emotet.phimsexvn.mobi:8080
emotet.phimsexvn.mobi:8880
emotet.phimsexvn.mobi:2052
emotet.phimsexvn.mobi:2082
emotet.phimsexvn.mobi:2086
emotet.phimsexvn.mobi:2095
emotet.phimsexvn.mobi:443
emotet.phimsexvn.mobi:2053
emotet.phimsexvn.mobi:2083
emotet.phimsexvn.mobi:2087
emotet.phimsexvn.mobi:2096
emotet.phimsexvn.mobi:8443
trisis.phimsexvn.mobi:80
trisis.phimsexvn.mobi:22
trisis.phimsexvn.mobi:8080
trisis.phimsexvn.mobi:8880
trisis.phimsexvn.mobi:2052
trisis.phimsexvn.mobi:2082
trisis.phimsexvn.mobi:2086
trisis.phimsexvn.mobi:2095
trisis.phimsexvn.mobi:443
trisis.phimsexvn.mobi:2053
trisis.phimsexvn.mobi:2083
trisis.phimsexvn.mobi:2087
trisis.phimsexvn.mobi:2096
trisis.phimsexvn.mobi:8443

Mutex

AB3BMFMKjQN5

Attributes

delay
0
install
true
install_file
egysym0h.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/0x000d00000001c611-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
1900	egysym0h.exe
3100	egysym0h.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	egysym0h.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	egysym0h.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
1536	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
3408	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
Token: SeDebugPrivilege	1900	egysym0h.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1468 wrote to memory of 5400	1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe	88
PID 1468 wrote to memory of 2860	1468	2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe	90
PID 2860 wrote to memory of 1536	2860	cmd.exe	92
PID 5400 wrote to memory of 3408	5400	cmd.exe	93
PID 2860 wrote to memory of 3100	2860	cmd.exe	96

C:\Users\Admin\AppData\Local\Temp\2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe
"C:\Users\Admin\AppData\Local\Temp\2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1468
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "egysym0h" /tr '"C:\Users\Admin\AppData\Roaming\egysym0h.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 "egysym0h" /tr '"C:\Users\Admin\AppData\Roaming\egysym0h.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3408
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpE8DF.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2860
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:1536
- - C:\Users\Admin\AppData\Roaming\egysym0h.exe
    "C:\Users\Admin\AppData\Roaming\egysym0h.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3100

C:\Users\Admin\AppData\Roaming\egysym0h.exe
"C:\Users\Admin\AppData\Roaming\egysym0h.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:1900

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

tmpE8DF.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpE8DF.tmp.bat
Size 152B
SHA256 0f167e82069031a124389f659882cbda082264dc7c15c966710fc35dd43cb434
MD5 296917aadbc0d8ae5b24da9e6b464432
SHA1 a65cab024e5198e39da0bebf8e580f3a6e601c11
SHA512 aecc752c3ed6666d95f7d265031c8a43787962bcb11203a8bf89f5d5dabe3e405e879eb51c02e47ec60b57b7b78dfb53e67db815dbacadb637915a2525d10ef4
TLSH
T195C02B4251C6EA8F381AA43313FAD48C92766C293F88BF00C304400D67C0949F4DB342
MD5 SHA1 SHA512 TLSH

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egysym0h.exe

Path C:\Users\Admin\AppData\Roaming\egysym0h.exe
Size 45KB
SHA256 2fb6b942dad36ab40eab08ad0e92e1b57f23b02d19b022d1475bef1100049adc
MD5 b3f2f7c840305a238d56deb343436c7c
SHA1 23c7a0b4647bfd2f7c5e361f20cb8489ca17aa55
SHA512 82eb0e8c251994c69879bce477d1c7530f4f57bf44cadfd00f569ee21111141b587a90de8eb236f270fcaee075ecc16575abacf26ef5a8b5439287ceaf512c46
SSDEEP 768:RuxkJTVmU5EkWUGMKSmo2q1zGsGx8OHuPI2zjbCg/3igtuQFazOBDZcx:RuxkJTgip2+ez323bl/SgtRFa8dcx
TLSH
T14E232A003BE9822BF2BE4FB498F26145867EF5637603D54D2CC442DB5623BC69A426FD
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1468-0-0x0000000074752000-0x0000000074753000-memory.dmp

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memory/1468-1-0x00000000000E0000-0x00000000000F2000-memory.dmp

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memory/1468-2-0x0000000074740000-0x0000000074EFC000-memory.dmp

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memory/1468-3-0x0000000004BE0000-0x0000000004C7C000-memory.dmp

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memory/1468-9-0x0000000074740000-0x0000000074EFC000-memory.dmp

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memory/1900-12-0x0000000074740000-0x0000000074EFC000-memory.dmp

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memory/1900-14-0x0000000074740000-0x0000000074EFC000-memory.dmp

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