asyncrat | 94c00396b7dbcf52675d3523d209d4a244e0fe1a0ea53e9b2192542bef3a8818

General

Target

0969731d32678ac6f0be0896d03b2eb382d2dcd54645e55c621ea6152ebce8b2.ps1
Size

440KB
MD5

93bfb747191ea031f60faf9b15e7d43b
SHA1

4fa4a763f1c7f4436b869eb2959542e0d966bb88
SHA256

0969731d32678ac6f0be0896d03b2eb382d2dcd54645e55c621ea6152ebce8b2
SHA512

b34e3dbdb6bcd089dc9df23d22344f0644ffdbebe79e8ae99ff13e07cfacf93df64ca3a77b1341fd4f02a485965630c129634a66446952c27a25a09c421bd281
SSDEEP

1536:wUdAHeDN4NDabDzuCO4dfk2EJdMFXa/3qYrYUF1rGs4UPDc+dl3Cz6nKd35rmDex:w/XrXFWHlFHhfu88C

Score

10^/10

asyncrat new-encrypt discovery execution rat

Malware Config

Extracted

Family

asyncrat

Version

AWS | 3Losh

Botnet

New-Encrypt

Mutex

AsyncMutex_alosh

Attributes

delay
3
install
false
install_folder
%AppData%
pastebin_config
https://pastebin.com/raw/M1nmWeTA

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Blocklisted process makes network request 2 IoCs

Processes:

powershell.exe

flow pid process

31 2756 powershell.exe
33 2756 powershell.exe

flow	pid	process
31	2756	powershell.exe
33	2756	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

Processes:

WScript.exeWScript.exeWScript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	WScript.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs
Using powershell.exe command.
execution

PowerShell
T1059.001

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid process

2756 powershell.exe
4060 powershell.exe
4648 powershell.exe
1092 powershell.exe
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service
T1102

Processes:

flow ioc

21 pastebin.com
22 pastebin.com
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

30 api.ipify.org
31 api.ipify.org

flow	ioc
21	pastebin.com
22	pastebin.com

flow	ioc
30	api.ipify.org
31	api.ipify.org

Suspicious use of SetThreadContext 3 IoCs

Processes:

powershell.exepowershell.exepowershell.exe

description	pid	process	target process
PID 4060 set thread context of 3376	4060	powershell.exe	aspnet_compiler.exe
PID 4648 set thread context of 4544	4648	powershell.exe	aspnet_compiler.exe
PID 1092 set thread context of 2828	1092	powershell.exe	aspnet_compiler.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 3 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:

aspnet_compiler.exeaspnet_compiler.exeaspnet_compiler.exe

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

Suspicious behavior: EnumeratesProcesses 12 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid	process
2756	powershell.exe
2756	powershell.exe
4060	powershell.exe
4060	powershell.exe
4648	powershell.exe
4648	powershell.exe
1092	powershell.exe
1092	powershell.exe
1092	powershell.exe
1092	powershell.exe
1092	powershell.exe
1092	powershell.exe

Suspicious use of AdjustPrivilegeToken 47 IoCs

Processes:

powershell.exepowershell.exeaspnet_compiler.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	2756	powershell.exe
Token: SeIncreaseQuotaPrivilege	2756	powershell.exe
Token: SeSecurityPrivilege	2756	powershell.exe
Token: SeTakeOwnershipPrivilege	2756	powershell.exe
Token: SeLoadDriverPrivilege	2756	powershell.exe
Token: SeSystemProfilePrivilege	2756	powershell.exe
Token: SeSystemtimePrivilege	2756	powershell.exe
Token: SeProfSingleProcessPrivilege	2756	powershell.exe
Token: SeIncBasePriorityPrivilege	2756	powershell.exe
Token: SeCreatePagefilePrivilege	2756	powershell.exe
Token: SeBackupPrivilege	2756	powershell.exe
Token: SeRestorePrivilege	2756	powershell.exe
Token: SeShutdownPrivilege	2756	powershell.exe
Token: SeDebugPrivilege	2756	powershell.exe
Token: SeSystemEnvironmentPrivilege	2756	powershell.exe
Token: SeRemoteShutdownPrivilege	2756	powershell.exe
Token: SeUndockPrivilege	2756	powershell.exe
Token: SeManageVolumePrivilege	2756	powershell.exe
Token: 33	2756	powershell.exe
Token: 34	2756	powershell.exe
Token: 35	2756	powershell.exe
Token: 36	2756	powershell.exe
Token: SeIncreaseQuotaPrivilege	2756	powershell.exe
Token: SeSecurityPrivilege	2756	powershell.exe
Token: SeTakeOwnershipPrivilege	2756	powershell.exe
Token: SeLoadDriverPrivilege	2756	powershell.exe
Token: SeSystemProfilePrivilege	2756	powershell.exe
Token: SeSystemtimePrivilege	2756	powershell.exe
Token: SeProfSingleProcessPrivilege	2756	powershell.exe
Token: SeIncBasePriorityPrivilege	2756	powershell.exe
Token: SeCreatePagefilePrivilege	2756	powershell.exe
Token: SeBackupPrivilege	2756	powershell.exe
Token: SeRestorePrivilege	2756	powershell.exe
Token: SeShutdownPrivilege	2756	powershell.exe
Token: SeDebugPrivilege	2756	powershell.exe
Token: SeSystemEnvironmentPrivilege	2756	powershell.exe
Token: SeRemoteShutdownPrivilege	2756	powershell.exe
Token: SeUndockPrivilege	2756	powershell.exe
Token: SeManageVolumePrivilege	2756	powershell.exe
Token: 33	2756	powershell.exe
Token: 34	2756	powershell.exe
Token: 35	2756	powershell.exe
Token: 36	2756	powershell.exe
Token: SeDebugPrivilege	4060	powershell.exe
Token: SeDebugPrivilege	3376	aspnet_compiler.exe
Token: SeDebugPrivilege	4648	powershell.exe
Token: SeDebugPrivilege	1092	powershell.exe

Suspicious use of WriteProcessMemory 36 IoCs

Processes:

WScript.exepowershell.exeWScript.exepowershell.exeWScript.exepowershell.exe

description	pid	process	target process
PID 4888 wrote to memory of 4060	4888	WScript.exe	powershell.exe
PID 4888 wrote to memory of 4060	4888	WScript.exe	powershell.exe
PID 4060 wrote to memory of 3376	4060	powershell.exe	aspnet_compiler.exe
PID 4060 wrote to memory of 3376	4060	powershell.exe	aspnet_compiler.exe
PID 4060 wrote to memory of 3376	4060	powershell.exe	aspnet_compiler.exe
PID 4060 wrote to memory of 3376	4060	powershell.exe	aspnet_compiler.exe
PID 4060 wrote to memory of 3376	4060	powershell.exe	aspnet_compiler.exe
PID 4060 wrote to memory of 3376	4060	powershell.exe	aspnet_compiler.exe
PID 4060 wrote to memory of 3376	4060	powershell.exe	aspnet_compiler.exe
PID 4060 wrote to memory of 3376	4060	powershell.exe	aspnet_compiler.exe
PID 4652 wrote to memory of 4648	4652	WScript.exe	powershell.exe
PID 4652 wrote to memory of 4648	4652	WScript.exe	powershell.exe
PID 4648 wrote to memory of 4544	4648	powershell.exe	aspnet_compiler.exe
PID 4648 wrote to memory of 4544	4648	powershell.exe	aspnet_compiler.exe
PID 4648 wrote to memory of 4544	4648	powershell.exe	aspnet_compiler.exe
PID 4648 wrote to memory of 4544	4648	powershell.exe	aspnet_compiler.exe
PID 4648 wrote to memory of 4544	4648	powershell.exe	aspnet_compiler.exe
PID 4648 wrote to memory of 4544	4648	powershell.exe	aspnet_compiler.exe
PID 4648 wrote to memory of 4544	4648	powershell.exe	aspnet_compiler.exe
PID 4648 wrote to memory of 4544	4648	powershell.exe	aspnet_compiler.exe
PID 2340 wrote to memory of 1092	2340	WScript.exe	powershell.exe
PID 2340 wrote to memory of 1092	2340	WScript.exe	powershell.exe
PID 1092 wrote to memory of 3088	1092	powershell.exe	aspnet_compiler.exe
PID 1092 wrote to memory of 3088	1092	powershell.exe	aspnet_compiler.exe
PID 1092 wrote to memory of 3088	1092	powershell.exe	aspnet_compiler.exe
PID 1092 wrote to memory of 3820	1092	powershell.exe	aspnet_compiler.exe
PID 1092 wrote to memory of 3820	1092	powershell.exe	aspnet_compiler.exe
PID 1092 wrote to memory of 3820	1092	powershell.exe	aspnet_compiler.exe
PID 1092 wrote to memory of 2828	1092	powershell.exe	aspnet_compiler.exe
PID 1092 wrote to memory of 2828	1092	powershell.exe	aspnet_compiler.exe
PID 1092 wrote to memory of 2828	1092	powershell.exe	aspnet_compiler.exe
PID 1092 wrote to memory of 2828	1092	powershell.exe	aspnet_compiler.exe
PID 1092 wrote to memory of 2828	1092	powershell.exe	aspnet_compiler.exe
PID 1092 wrote to memory of 2828	1092	powershell.exe	aspnet_compiler.exe
PID 1092 wrote to memory of 2828	1092	powershell.exe	aspnet_compiler.exe
PID 1092 wrote to memory of 2828	1092	powershell.exe	aspnet_compiler.exe

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\0969731d32678ac6f0be0896d03b2eb382d2dcd54645e55c621ea6152ebce8b2.ps1
1⤵
- Blocklisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2756

C:\Windows\System32\WScript.exe
C:\Windows\System32\WScript.exe "C:\Users\Public\Music\TvMusic.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4888

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass $usefont='ReadAllText';$resberrys='C:\Users\Public\Music\TvMusic.music';IEx([IO.File]::$usefont($resberrys))
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4060

C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3376

C:\Windows\System32\WScript.exe
C:\Windows\System32\WScript.exe "C:\Users\Public\Music\TvMusic.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4652

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass $usefont='ReadAllText';$resberrys='C:\Users\Public\Music\TvMusic.music';IEx([IO.File]::$usefont($resberrys))
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4648

C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
3⤵
- System Location Discovery: System Language Discovery
PID:4544

C:\Windows\System32\WScript.exe
C:\Windows\System32\WScript.exe "C:\Users\Public\Music\TvMusic.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2340

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass $usefont='ReadAllText';$resberrys='C:\Users\Public\Music\TvMusic.music';IEx([IO.File]::$usefont($resberrys))
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1092

C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
3⤵
PID:3088

C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
3⤵
PID:3820

C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
3⤵
- System Location Discovery: System Language Discovery
PID:2828

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

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

Replay Monitor

Loading Replay Monitor...

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
1KB

MD5
9bb49da19215c64f6b00468e04d68d57

SHA1
2a674ef233db152541b5a3e01ffd8d2477babdaf

SHA256
e7add962b0f5b3798fc22df547b06506a5b647f7ac65c84b27184cbb8cb48f01

SHA512
09bd1b16c4d5dbce809593d1d2f5458d678496f610c7e5accd6475b3d0be3fd195711b0a40904ed974e5d1663856b38f9ffe5f67adfcdb3afb6c098310da711c

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

Filesize
1KB

MD5
75ceacfce03c5a5e09954f2aa55b1e3b

SHA1
70c5515e12678a043e3c624d91f070181bb70a31

SHA256
b72ed6a01752483eab4544a27801dc5e5d9f7d8295a9c3d39bcb5cd51319dace

SHA512
cb2d700bdf3713cc24cfc70f188e5a5a78292d65e240400fbaf1beafd86dd9cb6b6aa67c0a38aafb9e9509511c72ced1bc0dec872cb1ba3cb3b99dbf3c5f5629

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0ouq51mb.v0b.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Public\Music\TvMusic.music

Filesize
436KB

MD5
699160a16bdf0536e0fa69adcbab1e19

SHA1
ae8a6be22f05e119e7031edc79fb4a21f1268500

SHA256
4e7889d60aa6df54e7b646e8ba30befa9bba6ddfca3ac1a5894429e0caa86295

SHA512
bf2b94320790d54a3c30a57a34877f5d5d55e918943f1180fef50901b86b61e1bd48dd8c7af0a1a82de7f0b0e2af7b65dc6471fc616846c4260811c2ddc5c145

Download Submit
C:\Users\Public\Music\TvMusic.vbs

Filesize
229B

MD5
66a1516e1d1e821084441211567d2e87

SHA1
0e688c9a93ad2cc162ef48ca75e0148e69d95ab1

SHA256
d57293641ff05fea6af21fb73a4064eca49e5979f2395305bdea2a00a5de6717

SHA512
1b77505b03a4a9c2c9437fbb94e828f34ed5b74187a258443af778b9450dc346e7027267e4ad6d33ff96c4036d936eba9dee05efbe136678bec6d0f7b68ecf12

Download Submit
memory/2756-33-0x00007FFD9EAD3000-0x00007FFD9EAD5000-memory.dmp

Filesize
8KB

Download
memory/2756-41-0x00007FFD9EAD0000-0x00007FFD9F591000-memory.dmp

Filesize
10.8MB

Download
memory/2756-11-0x000001DB29B70000-0x000001DB29B92000-memory.dmp

Filesize
136KB

Download
memory/2756-46-0x00007FFD9EAD0000-0x00007FFD9F591000-memory.dmp

Filesize
10.8MB

Download
memory/2756-0-0x00007FFD9EAD3000-0x00007FFD9EAD5000-memory.dmp

Filesize
8KB

Download
memory/2756-34-0x00007FFD9EAD0000-0x00007FFD9F591000-memory.dmp

Filesize
10.8MB

Download
memory/2756-10-0x00007FFD9EAD0000-0x00007FFD9F591000-memory.dmp

Filesize
10.8MB

Download
memory/2756-12-0x00007FFD9EAD0000-0x00007FFD9F591000-memory.dmp

Filesize
10.8MB

Download
memory/2756-42-0x000001DB2A870000-0x000001DB2AD98000-memory.dmp

Filesize
5.2MB

Download
memory/2756-40-0x000001DB2A170000-0x000001DB2A332000-memory.dmp

Filesize
1.8MB

Download
memory/2756-17-0x00007FFD9EAD0000-0x00007FFD9F591000-memory.dmp

Filesize
10.8MB

Download
memory/3376-39-0x00000000062C0000-0x0000000006326000-memory.dmp

Filesize
408KB

Download
memory/3376-38-0x0000000006800000-0x0000000006DA4000-memory.dmp

Filesize
5.6MB

Download
memory/3376-37-0x0000000005F80000-0x000000000601C000-memory.dmp

Filesize
624KB

Download
memory/3376-30-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/4060-29-0x0000027B49A10000-0x0000027B49A1C000-memory.dmp

Filesize
48KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads