asyncrat | f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d

Analysis

max time kernel
148s
max time network
152s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260710-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
16/07/2026, 04:29

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General

Target
f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe
Size 45KB
Sample260716-e4d8jsc12r
SHA256 f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d
MD5 e1e9918876136411d1c9a2e47a747259
SHA1 836131acea71575e7a1eea34df29bdce70a1e4b8
SHA512 a89531da54e397a33a94883cbadc3d69ac2c8f2b3afb8d0615deb05674d40671d415ddd969deb890a4222d4e74be97d064cac09766d6338dfac36d19e636be6d
SSDEEP 768:cuR0JTPUYkEWUmjWymo2q1pQ0u3+/vPPjZPIvzjbYgx3iHjAB0T7L4N8ZKBDZUx:cuR0JTPjY2Gi32/jWv3bPxSkB0T7Lir0
TLSH
T15D232B0037E9812BF2BE4B786DF25245867AF6733603D64A1CC452DB1623FC68A426FD
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

zephimsexhay.com:80
zephimsexhay.com:22
zephimsexhay.com:8080
zephimsexhay.com:8880
zephimsexhay.com:2052
zephimsexhay.com:2082
zephimsexhay.com:2086
zephimsexhay.com:2095
zephimsexhay.com:443
zephimsexhay.com:2053
zephimsexhay.com:2083
zephimsexhay.com:2087
zephimsexhay.com:2096
zephimsexhay.com:8443
www.zephimsexhay.com:80
www.zephimsexhay.com:22
www.zephimsexhay.com:8080
www.zephimsexhay.com:8880
www.zephimsexhay.com:2052
www.zephimsexhay.com:2082
www.zephimsexhay.com:2086
www.zephimsexhay.com:2095
www.zephimsexhay.com:443
www.zephimsexhay.com:2053
www.zephimsexhay.com:2083
www.zephimsexhay.com:2087
www.zephimsexhay.com:2096
www.zephimsexhay.com:8443
malware.zephimsexhay.com:80
malware.zephimsexhay.com:22
malware.zephimsexhay.com:8080
malware.zephimsexhay.com:8880
malware.zephimsexhay.com:2052
malware.zephimsexhay.com:2082
malware.zephimsexhay.com:2086
malware.zephimsexhay.com:2095
malware.zephimsexhay.com:443
malware.zephimsexhay.com:2053
malware.zephimsexhay.com:2083
malware.zephimsexhay.com:2087
malware.zephimsexhay.com:2096
malware.zephimsexhay.com:8443
clop.zephimsexhay.com:80
clop.zephimsexhay.com:22
clop.zephimsexhay.com:8080
clop.zephimsexhay.com:8880
clop.zephimsexhay.com:2052
clop.zephimsexhay.com:2082
clop.zephimsexhay.com:2086
clop.zephimsexhay.com:2095
clop.zephimsexhay.com:443
clop.zephimsexhay.com:2053
clop.zephimsexhay.com:2083
clop.zephimsexhay.com:2087
clop.zephimsexhay.com:2096
clop.zephimsexhay.com:8443

Mutex

uqJop4UubmsS

Attributes

delay
0
install
true
install_file
bhum.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/0x000e00000001c5b7-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
4124	bhum.exe
4592	bhum.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	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bhum.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bhum.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4912	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
1360	schtasks.exe

Suspicious behavior: EnumeratesProcesses 29 IoCs

pid	Process
2552	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe
2552	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe
2552	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe
2552	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe
2552	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe
2552	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe
2552	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe
2552	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe
2552	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe
2552	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe
2552	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe
2552	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe
2552	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe
2552	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe
2552	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe
2552	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe
2552	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe
2552	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe
2552	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe
2552	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe
2552	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe
2552	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe
2552	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe
2552	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe
2552	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe
2552	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe
2552	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe
2552	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe
2552	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2552	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe
Token: SeDebugPrivilege	4124	bhum.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2552 wrote to memory of 4864	2552	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe	87
PID 2552 wrote to memory of 4360	2552	f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe	88
PID 4864 wrote to memory of 1360	4864	cmd.exe	91
PID 4360 wrote to memory of 4912	4360	cmd.exe	92
PID 4360 wrote to memory of 4592	4360	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe
"C:\Users\Admin\AppData\Local\Temp\f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2552
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "bhum" /tr '"C:\Users\Admin\AppData\Roaming\bhum.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4864
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "bhum" /tr '"C:\Users\Admin\AppData\Roaming\bhum.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1360
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpEBC.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4360
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4912
- - C:\Users\Admin\AppData\Roaming\bhum.exe
    "C:\Users\Admin\AppData\Roaming\bhum.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4592

C:\Users\Admin\AppData\Roaming\bhum.exe
"C:\Users\Admin\AppData\Roaming\bhum.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:4124

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

tmpEBC.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpEBC.tmp.bat
Size 147B
SHA256 e1eade0fbd1e5a265c7122e8aabe11b53c1dc277284672587ae78c3270576375
MD5 0930b5e3ca2aab85b209e82ba542e7d9
SHA1 e1b2520c45913f35c357e48cf8915f6c4df5dd94
SHA512 558ff5356a72bce8e92980307612493e8797551cc378434f7129ac085df56a201711481c361d6dfe70e8e9c1f53f1015d16fd5283abb3470c2bf5769ef6924b3
TLSH
T19AC02B4252C7EA5E3C49245303FAE98E9172AC193F48BB04C384C48F57C084CF0DA345
MD5 SHA1 SHA512 TLSH

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bhum.exe

Path C:\Users\Admin\AppData\Roaming\bhum.exe
Size 45KB
SHA256 f9ad79bbca49514798bf109fff3897f99930dad5f1ea9f94462dd887ad39472d
MD5 e1e9918876136411d1c9a2e47a747259
SHA1 836131acea71575e7a1eea34df29bdce70a1e4b8
SHA512 a89531da54e397a33a94883cbadc3d69ac2c8f2b3afb8d0615deb05674d40671d415ddd969deb890a4222d4e74be97d064cac09766d6338dfac36d19e636be6d
SSDEEP 768:cuR0JTPUYkEWUmjWymo2q1pQ0u3+/vPPjZPIvzjbYgx3iHjAB0T7L4N8ZKBDZUx:cuR0JTPjY2Gi32/jWv3bPxSkB0T7Lir0
TLSH
T15D232B0037E9812BF2BE4B786DF25245867AF6733603D64A1CC452DB1623FC68A426FD
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2552-0-0x00000000749F2000-0x00000000749F3000-memory.dmp

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memory/2552-1-0x0000000000170000-0x0000000000182000-memory.dmp

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memory/2552-2-0x00000000749E0000-0x000000007519C000-memory.dmp

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memory/2552-3-0x0000000004D00000-0x0000000004D9C000-memory.dmp

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memory/2552-8-0x00000000749E0000-0x000000007519C000-memory.dmp

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memory/4124-12-0x0000000074870000-0x000000007502C000-memory.dmp

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memory/4124-14-0x0000000074870000-0x000000007502C000-memory.dmp

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