asyncrat | b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7

Analysis

max time kernel
148s
max time network
149s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
03/08/2026, 07:29

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General

Target
b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
Size 45KB
Sample260803-jbljdadr7v
SHA256 b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7
MD5 e209fba761168ee9fc9dcbe6924eeeb3
SHA1 52d759335022ff4ea0333e71f99aee9c30015495
SHA512 b4bc7d1f8a8090dc27c8e48a8cedc93d3341cd1267de9d1371e4470cf53c4a0f115c44bc910f33ac1625ea12fc34bc9bed020e7bbea65319b2f7693e91a51b1e
SSDEEP 768:0uPrpT/LGKeWUszuAmo2q9K9YikqHztOPIUzjb7g83iE0l3ZHk7870BDZ8x:0uPrpT/qY23alK3U3bE8SE0l3Z28Od8x
TLSH
T1FB233B003BE8C12BF2BF4F78A9F26145867AF5673603D64A1CC452975613FC68A426FE
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

phimvkl.com:80
phimvkl.com:22
phimvkl.com:8080
phimvkl.com:8880
phimvkl.com:2052
phimvkl.com:2082
phimvkl.com:2086
phimvkl.com:2095
phimvkl.com:443
phimvkl.com:2053
phimvkl.com:2083
phimvkl.com:2087
phimvkl.com:2096
phimvkl.com:8443
www.phimvkl.com:80
www.phimvkl.com:22
www.phimvkl.com:8080
www.phimvkl.com:8880
www.phimvkl.com:2052
www.phimvkl.com:2082
www.phimvkl.com:2086
www.phimvkl.com:2095
www.phimvkl.com:443
www.phimvkl.com:2053
www.phimvkl.com:2083
www.phimvkl.com:2087
www.phimvkl.com:2096
www.phimvkl.com:8443
mydoom.phimvkl.com:80
mydoom.phimvkl.com:22
mydoom.phimvkl.com:8080
mydoom.phimvkl.com:8880
mydoom.phimvkl.com:2052
mydoom.phimvkl.com:2082
mydoom.phimvkl.com:2086
mydoom.phimvkl.com:2095
mydoom.phimvkl.com:443
mydoom.phimvkl.com:2053
mydoom.phimvkl.com:2083
mydoom.phimvkl.com:2087
mydoom.phimvkl.com:2096
mydoom.phimvkl.com:8443
malware.phimvkl.com:80
malware.phimvkl.com:22
malware.phimvkl.com:8080
malware.phimvkl.com:8880
malware.phimvkl.com:2052
malware.phimvkl.com:2082
malware.phimvkl.com:2086
malware.phimvkl.com:2095
malware.phimvkl.com:443
malware.phimvkl.com:2053
malware.phimvkl.com:2083
malware.phimvkl.com:2087
malware.phimvkl.com:2096
malware.phimvkl.com:8443
sobig.phimvkl.com:80
sobig.phimvkl.com:22
sobig.phimvkl.com:8080
sobig.phimvkl.com:8880
sobig.phimvkl.com:2052
sobig.phimvkl.com:2082
sobig.phimvkl.com:2086
sobig.phimvkl.com:2095
sobig.phimvkl.com:443
sobig.phimvkl.com:2053
sobig.phimvkl.com:2083
sobig.phimvkl.com:2087
sobig.phimvkl.com:2096
sobig.phimvkl.com:8443

Mutex

yfWj2IiWDdmr

Attributes

delay
0
install
true
install_file
zl2ua3h.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/0x0005000000016b3f-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
1768	zl2ua3h.exe
3620	zl2ua3h.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	11	172.67.69.53:22
SSH destination	8	104.26.8.243:22
SSH destination	9	104.26.9.243:22

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
5420	cmd.exe
4644	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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zl2ua3h.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zl2ua3h.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.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
5544	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
3200	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
Token: SeDebugPrivilege	1768	zl2ua3h.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1116 wrote to memory of 5420	1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe	89
PID 1116 wrote to memory of 4644	1116	b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe	91
PID 4644 wrote to memory of 5544	4644	cmd.exe	93
PID 5420 wrote to memory of 3200	5420	cmd.exe	94
PID 4644 wrote to memory of 3620	4644	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe
"C:\Users\Admin\AppData\Local\Temp\b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1116
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "zl2ua3h" /tr '"C:\Users\Admin\AppData\Roaming\zl2ua3h.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5420
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "zl2ua3h" /tr '"C:\Users\Admin\AppData\Roaming\zl2ua3h.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3200
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpF766.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4644
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:5544
- - C:\Users\Admin\AppData\Roaming\zl2ua3h.exe
    "C:\Users\Admin\AppData\Roaming\zl2ua3h.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3620

C:\Users\Admin\AppData\Roaming\zl2ua3h.exe
"C:\Users\Admin\AppData\Roaming\zl2ua3h.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:1768

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

tmpF766.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpF766.tmp.bat
Size 151B
SHA256 a5ba1d2af517e83218a5ee8fd6259e15a5442ddd9f62f916fc2f0b4564a7de72
MD5 c8848b50757be5c57dc7118a145015a9
SHA1 d8afee071692cbde4e3db7504d034e3501a7c8ed
SHA512 a7acf08f9ec9dffd2453e39abfb2dbb82dfaecb87ee3ed040a6f844b8058d16f1a3ab5021cec0d7290ae03a3a6a053cfbc57296ca7d13f0ce8299df1f36285ad
TLSH
T1B0C02B4251C9FA0F3805281306FBDB8DA1766CB93F88FF10C308484D668044CF5D9341
MD5 SHA1 SHA512 TLSH

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zl2ua3h.exe

Path C:\Users\Admin\AppData\Roaming\zl2ua3h.exe
Size 45KB
SHA256 b0a09cbc02a21a108ac4bfdb7945a436e88d0e7a9bb8d18f6834386bbb7f1ec7
MD5 e209fba761168ee9fc9dcbe6924eeeb3
SHA1 52d759335022ff4ea0333e71f99aee9c30015495
SHA512 b4bc7d1f8a8090dc27c8e48a8cedc93d3341cd1267de9d1371e4470cf53c4a0f115c44bc910f33ac1625ea12fc34bc9bed020e7bbea65319b2f7693e91a51b1e
SSDEEP 768:0uPrpT/LGKeWUszuAmo2q9K9YikqHztOPIUzjb7g83iE0l3ZHk7870BDZ8x:0uPrpT/qY23alK3U3bE8SE0l3Z28Od8x
TLSH
T1FB233B003BE8C12BF2BF4F78A9F26145867AF5673603D64A1CC452975613FC68A426FE
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1116-0-0x00000000751F2000-0x00000000751F3000-memory.dmp

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memory/1116-1-0x00000000009A0000-0x00000000009B2000-memory.dmp

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memory/1116-2-0x00000000751E0000-0x000000007599C000-memory.dmp

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memory/1116-3-0x0000000005390000-0x000000000542C000-memory.dmp

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memory/1116-8-0x00000000751E0000-0x000000007599C000-memory.dmp

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memory/1768-12-0x0000000075070000-0x000000007582C000-memory.dmp

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memory/1768-14-0x0000000075070000-0x000000007582C000-memory.dmp

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