asyncrat | 10fe9e0b3b861a06727addb3e0291727bdd8cd91bebbed4b3d6bc901aa15dde1

Analysis

max time kernel
147s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
18-06-2024 15:08

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General

Target

10fe9e0b3b861a06727addb3e0291727bdd8cd91bebbed4b3d6bc901aa15dde1.exe
Size

2.7MB
MD5

35e31d508c28c89153ef55ffe8c8ba53
SHA1

c74bd105dcac27193f9b432a8a45719b5bb60de1
SHA256

10fe9e0b3b861a06727addb3e0291727bdd8cd91bebbed4b3d6bc901aa15dde1
SHA512

9a953f9ea56fdf5858fda761d3e44bc825a33f489b2a2d09aff438f94eae0e299cc15280b9c716024319d153e872e9e5449f47d0ce8bcec7e07f635590c511b0
SSDEEP

49152:xiv9XkAV5nN1nCz+QBprbMG8zFOnRPXXeqwlG9nFRW7NMJwBgJT:sVR5d2+OpMGtRvezliGCGBgt

Score

10^/10

asyncrat default execution persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

95.211.208.153:6606

95.211.208.153:7707

95.211.208.153:8808

5512.sytes.net:6606

5512.sytes.net:7707

5512.sytes.net:8808

Mutex

Llg9a02PERRO

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Signatures

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

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:

10fe9e0b3b861a06727addb3e0291727bdd8cd91bebbed4b3d6bc901aa15dde1.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	10fe9e0b3b861a06727addb3e0291727bdd8cd91bebbed4b3d6bc901aa15dde1.exe

Executes dropped EXE 2 IoCs

Processes:

Zcsbaibfhun.exeLicGen.exe

pid process

3592 Zcsbaibfhun.exe
4484 LicGen.exe

pid	process
3592	Zcsbaibfhun.exe
4484	LicGen.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Zcsbaibfhun.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Duyiyilycdc = "C:\\Users\\Admin\\AppData\\Roaming\\Duyiyilycdc.exe"	Zcsbaibfhun.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Zcsbaibfhun.exe

description pid process target process

PID 3592 set thread context of 4224 3592 Zcsbaibfhun.exe InstallUtil.exe
Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Using powershell.exe command.
execution

PowerShell
T1059.001

Processes:

powershell.exe

pid process

212 powershell.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

powershell.exe

pid process

212 powershell.exe
212 powershell.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

powershell.exeZcsbaibfhun.exe

description pid process

Token: SeDebugPrivilege 212 powershell.exe
Token: SeDebugPrivilege 3592 Zcsbaibfhun.exe
Token: SeDebugPrivilege 3592 Zcsbaibfhun.exe

description	pid	process	target process
PID 3592 set thread context of 4224	3592	Zcsbaibfhun.exe	InstallUtil.exe

pid	process
212	powershell.exe

pid	process
212	powershell.exe
212	powershell.exe

description	pid	process
Token: SeDebugPrivilege	212	powershell.exe
Token: SeDebugPrivilege	3592	Zcsbaibfhun.exe
Token: SeDebugPrivilege	3592	Zcsbaibfhun.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

10fe9e0b3b861a06727addb3e0291727bdd8cd91bebbed4b3d6bc901aa15dde1.exeZcsbaibfhun.exe

description	pid	process	target process
PID 1644 wrote to memory of 212	1644	10fe9e0b3b861a06727addb3e0291727bdd8cd91bebbed4b3d6bc901aa15dde1.exe	powershell.exe
PID 1644 wrote to memory of 212	1644	10fe9e0b3b861a06727addb3e0291727bdd8cd91bebbed4b3d6bc901aa15dde1.exe	powershell.exe
PID 1644 wrote to memory of 212	1644	10fe9e0b3b861a06727addb3e0291727bdd8cd91bebbed4b3d6bc901aa15dde1.exe	powershell.exe
PID 1644 wrote to memory of 3592	1644	10fe9e0b3b861a06727addb3e0291727bdd8cd91bebbed4b3d6bc901aa15dde1.exe	Zcsbaibfhun.exe
PID 1644 wrote to memory of 3592	1644	10fe9e0b3b861a06727addb3e0291727bdd8cd91bebbed4b3d6bc901aa15dde1.exe	Zcsbaibfhun.exe
PID 1644 wrote to memory of 3592	1644	10fe9e0b3b861a06727addb3e0291727bdd8cd91bebbed4b3d6bc901aa15dde1.exe	Zcsbaibfhun.exe
PID 1644 wrote to memory of 4484	1644	10fe9e0b3b861a06727addb3e0291727bdd8cd91bebbed4b3d6bc901aa15dde1.exe	LicGen.exe
PID 1644 wrote to memory of 4484	1644	10fe9e0b3b861a06727addb3e0291727bdd8cd91bebbed4b3d6bc901aa15dde1.exe	LicGen.exe
PID 1644 wrote to memory of 4484	1644	10fe9e0b3b861a06727addb3e0291727bdd8cd91bebbed4b3d6bc901aa15dde1.exe	LicGen.exe
PID 3592 wrote to memory of 4224	3592	Zcsbaibfhun.exe	InstallUtil.exe
PID 3592 wrote to memory of 4224	3592	Zcsbaibfhun.exe	InstallUtil.exe
PID 3592 wrote to memory of 4224	3592	Zcsbaibfhun.exe	InstallUtil.exe
PID 3592 wrote to memory of 4224	3592	Zcsbaibfhun.exe	InstallUtil.exe
PID 3592 wrote to memory of 4224	3592	Zcsbaibfhun.exe	InstallUtil.exe
PID 3592 wrote to memory of 4224	3592	Zcsbaibfhun.exe	InstallUtil.exe
PID 3592 wrote to memory of 4224	3592	Zcsbaibfhun.exe	InstallUtil.exe
PID 3592 wrote to memory of 4224	3592	Zcsbaibfhun.exe	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\10fe9e0b3b861a06727addb3e0291727bdd8cd91bebbed4b3d6bc901aa15dde1.exe
"C:\Users\Admin\AppData\Local\Temp\10fe9e0b3b861a06727addb3e0291727bdd8cd91bebbed4b3d6bc901aa15dde1.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1644

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAHAAYQB0ACMAPgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAHoAdgB3ACMAPgAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEAAKAAkAGUAbgB2ADoAVQBzAGUAcgBQAHIAbwBmAGkAbABlACwAJABlAG4AdgA6AFMAeQBzAHQAZQBtAEQAcgBpAHYAZQApACAAPAAjAHcAcwB0ACMAPgAgAC0ARgBvAHIAYwBlACAAPAAjAHUAZABuACMAPgA="
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:212

C:\Users\Admin\AppData\Local\Temp\Zcsbaibfhun.exe
"C:\Users\Admin\AppData\Local\Temp\Zcsbaibfhun.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3592

C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
3⤵
PID:4224

C:\Users\Admin\AppData\Local\Temp\LicGen.exe
"C:\Users\Admin\AppData\Local\Temp\LicGen.exe"
2⤵
- Executes dropped EXE
PID:4484

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\LicGen.exe
Filesize
334KB

MD5
63404fb2f5a0d14e7a19fa3e4b8af577

SHA1
12d4ecfcfe8f9fa53fbc4f7addb43ab118da8255

SHA256
d599ed299630b163afb1aa64f6f5bdd92969dd9abfca1e32d1df4a93608fefeb

SHA512
19aae9580fa9be4c14401f144f04366a1c21cb9c9ae268a4e75f9e0364f49e9e18242ec0f49c7ec349328530b960b3890e1197d417db9986c763e098844e7416

Download Submit
C:\Users\Admin\AppData\Local\Temp\Zcsbaibfhun.exe
Filesize
2.4MB

MD5
5870c41c149fdd038336b2a1b2103e2f

SHA1
d3efce3cc94fb928113481aee8d58cdeea24a708

SHA256
9b489f300c3797e9d343a47ecd96e83646a61b02c28b5e68071d26a5a666c929

SHA512
9fdbc2281e54dc640e8b2598faedabffe70f3fc739d88a603c0d43a8496fc08b07fcebd63fabd11d69c3393edb28eec867ab505a5c694ebe17632d04fe8952a7

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1jfdyvr1.acq.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/212-31-0x0000000005910000-0x0000000005932000-memory.dmp

Filesize
136KB

Download
memory/212-4962-0x0000000073360000-0x0000000073B10000-memory.dmp

Filesize
7.7MB

Download
memory/212-4957-0x0000000007F60000-0x0000000007F68000-memory.dmp

Filesize
32KB

Download
memory/212-25-0x0000000005BC0000-0x00000000061E8000-memory.dmp

Filesize
6.2MB

Download
memory/212-4956-0x0000000007F70000-0x0000000007F8A000-memory.dmp

Filesize
104KB

Download
memory/212-26-0x0000000073360000-0x0000000073B10000-memory.dmp

Filesize
7.7MB

Download
memory/212-4862-0x0000000007E90000-0x0000000007EA4000-memory.dmp

Filesize
80KB

Download
memory/212-30-0x0000000005580000-0x0000000005590000-memory.dmp

Filesize
64KB

Download
memory/212-4212-0x0000000007E80000-0x0000000007E8E000-memory.dmp

Filesize
56KB

Download
memory/212-33-0x0000000005B20000-0x0000000005B86000-memory.dmp

Filesize
408KB

Download
memory/212-32-0x00000000059B0000-0x0000000005A16000-memory.dmp

Filesize
408KB

Download
memory/212-22-0x0000000002FF0000-0x0000000003026000-memory.dmp

Filesize
216KB

Download
memory/212-474-0x0000000007E20000-0x0000000007E31000-memory.dmp

Filesize
68KB

Download
memory/212-23-0x0000000073360000-0x0000000073B10000-memory.dmp

Filesize
7.7MB

Download
memory/212-457-0x0000000007EB0000-0x0000000007F46000-memory.dmp

Filesize
600KB

Download
memory/212-454-0x0000000008260000-0x00000000088DA000-memory.dmp

Filesize
6.5MB

Download
memory/212-46-0x00000000062C0000-0x0000000006614000-memory.dmp

Filesize
3.3MB

Download
memory/212-456-0x0000000007C90000-0x0000000007C9A000-memory.dmp

Filesize
40KB

Download
memory/212-455-0x0000000007C20000-0x0000000007C3A000-memory.dmp

Filesize
104KB

Download
memory/212-291-0x00000000078E0000-0x0000000007983000-memory.dmp

Filesize
652KB

Download
memory/212-228-0x0000000006EB0000-0x0000000006EE2000-memory.dmp

Filesize
200KB

Download
memory/212-229-0x000000006FA50000-0x000000006FA9C000-memory.dmp

Filesize
304KB

Download
memory/212-259-0x0000000006F10000-0x0000000006F2E000-memory.dmp

Filesize
120KB

Download
memory/212-227-0x0000000006920000-0x000000000696C000-memory.dmp

Filesize
304KB

Download
memory/212-226-0x00000000068D0000-0x00000000068EE000-memory.dmp

Filesize
120KB

Download
memory/3592-45-0x0000000006A70000-0x0000000007014000-memory.dmp

Filesize
5.6MB

Download
memory/3592-87-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-59-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-57-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-55-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-52-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-49-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-48-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-63-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-107-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-109-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-111-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-105-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-103-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-101-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-99-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-97-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-65-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-69-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-95-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-93-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-91-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-89-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-67-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-86-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-83-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-81-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-79-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-71-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-73-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-75-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-77-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-61-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-53-0x0000000006270000-0x000000000648C000-memory.dmp

Filesize
2.1MB

Download
memory/3592-47-0x00000000065D0000-0x0000000006662000-memory.dmp

Filesize
584KB

Download
memory/3592-44-0x0000000006270000-0x0000000006492000-memory.dmp

Filesize
2.1MB

Download
memory/3592-34-0x0000000004F20000-0x0000000005140000-memory.dmp

Filesize
2.1MB

Download
memory/3592-4963-0x0000000007070000-0x00000000070C4000-memory.dmp

Filesize
336KB

Download
memory/3592-28-0x0000000004F10000-0x0000000004F20000-memory.dmp

Filesize
64KB

Download
memory/3592-20-0x000000007336E000-0x000000007336F000-memory.dmp

Filesize
4KB

Download
memory/3592-24-0x0000000000310000-0x0000000000572000-memory.dmp

Filesize
2.4MB

Download
memory/3592-4958-0x00000000067F0000-0x000000000684C000-memory.dmp

Filesize
368KB

Download
memory/3592-4959-0x0000000006850000-0x000000000689C000-memory.dmp

Filesize
304KB

Download
memory/4224-4967-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/4484-27-0x0000000000700000-0x0000000000701000-memory.dmp

Filesize
4KB

Download
memory/4484-29-0x0000000000400000-0x00000000004DD000-memory.dmp

Filesize
884KB

Download
memory/4484-4972-0x0000000000400000-0x00000000004DD000-memory.dmp

Filesize
884KB

Download