asyncrat | d5b13032eb32a6b82f56d2211a597b2164804bbd791f5cd8c6b791166bef5c34

General

Target

788d7a1994c74b57bfe297f43e1b408b.exe
Size

26KB
MD5

788d7a1994c74b57bfe297f43e1b408b
SHA1

98be2533956fe6cfdffb9839a54fdbdf274abdd7
SHA256

d5b13032eb32a6b82f56d2211a597b2164804bbd791f5cd8c6b791166bef5c34
SHA512

599b5d5a3652764620e37d8bd79f97aeaabb1bdc3dac71c21b7148ed3d992f87b7331e88ef1eb0daccba407394f4a8d8f7a3828d90719a9fbc78d7691a8743de

Score

10^/10

asyncrat default rat suricata

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

fjrtjrjyjj.duckdns.org:1884

Mutex

AsyncMutex_6SI8OkPnk

Attributes

anti_vm
false
bsod
false
delay
3
install
false
install_file
chrome.exe
install_folder
%AppData%
pastebin_config
null

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat
suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)
suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)
suricata

Async RAT payload 5 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1064-67-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1064-66-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1064-68-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1064-69-0x000000000040C74E-mapping.dmp	asyncrat
behavioral1/memory/1064-72-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

Executes dropped EXE 1 IoCs

Processes:

InstallUtil.exe

pid process

1064 InstallUtil.exe
Loads dropped DLL 1 IoCs

Processes:

788d7a1994c74b57bfe297f43e1b408b.exe

pid process

852 788d7a1994c74b57bfe297f43e1b408b.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

788d7a1994c74b57bfe297f43e1b408b.exe

description pid process target process

PID 852 set thread context of 1064 852 788d7a1994c74b57bfe297f43e1b408b.exe InstallUtil.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

788d7a1994c74b57bfe297f43e1b408b.exepowershell.exe

pid process

852 788d7a1994c74b57bfe297f43e1b408b.exe
852 788d7a1994c74b57bfe297f43e1b408b.exe
1320 powershell.exe

pid	process
1064	InstallUtil.exe

pid	process
852	788d7a1994c74b57bfe297f43e1b408b.exe

description	pid	process	target process
PID 852 set thread context of 1064	852	788d7a1994c74b57bfe297f43e1b408b.exe	InstallUtil.exe

pid	process
852	788d7a1994c74b57bfe297f43e1b408b.exe
852	788d7a1994c74b57bfe297f43e1b408b.exe
1320	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

788d7a1994c74b57bfe297f43e1b408b.exepowershell.exeInstallUtil.exe

description	pid	process
Token: SeDebugPrivilege	852	788d7a1994c74b57bfe297f43e1b408b.exe
Token: SeDebugPrivilege	1320	powershell.exe
Token: SeDebugPrivilege	1064	InstallUtil.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

788d7a1994c74b57bfe297f43e1b408b.exeWScript.exe

description	pid	process	target process
PID 852 wrote to memory of 1828	852	788d7a1994c74b57bfe297f43e1b408b.exe	WScript.exe
PID 852 wrote to memory of 1828	852	788d7a1994c74b57bfe297f43e1b408b.exe	WScript.exe
PID 852 wrote to memory of 1828	852	788d7a1994c74b57bfe297f43e1b408b.exe	WScript.exe
PID 852 wrote to memory of 1828	852	788d7a1994c74b57bfe297f43e1b408b.exe	WScript.exe
PID 852 wrote to memory of 1064	852	788d7a1994c74b57bfe297f43e1b408b.exe	InstallUtil.exe
PID 852 wrote to memory of 1064	852	788d7a1994c74b57bfe297f43e1b408b.exe	InstallUtil.exe
PID 852 wrote to memory of 1064	852	788d7a1994c74b57bfe297f43e1b408b.exe	InstallUtil.exe
PID 852 wrote to memory of 1064	852	788d7a1994c74b57bfe297f43e1b408b.exe	InstallUtil.exe
PID 852 wrote to memory of 1064	852	788d7a1994c74b57bfe297f43e1b408b.exe	InstallUtil.exe
PID 852 wrote to memory of 1064	852	788d7a1994c74b57bfe297f43e1b408b.exe	InstallUtil.exe
PID 852 wrote to memory of 1064	852	788d7a1994c74b57bfe297f43e1b408b.exe	InstallUtil.exe
PID 852 wrote to memory of 1064	852	788d7a1994c74b57bfe297f43e1b408b.exe	InstallUtil.exe
PID 852 wrote to memory of 1064	852	788d7a1994c74b57bfe297f43e1b408b.exe	InstallUtil.exe
PID 852 wrote to memory of 1064	852	788d7a1994c74b57bfe297f43e1b408b.exe	InstallUtil.exe
PID 852 wrote to memory of 1064	852	788d7a1994c74b57bfe297f43e1b408b.exe	InstallUtil.exe
PID 852 wrote to memory of 1064	852	788d7a1994c74b57bfe297f43e1b408b.exe	InstallUtil.exe
PID 1828 wrote to memory of 1320	1828	WScript.exe	powershell.exe
PID 1828 wrote to memory of 1320	1828	WScript.exe	powershell.exe
PID 1828 wrote to memory of 1320	1828	WScript.exe	powershell.exe
PID 1828 wrote to memory of 1320	1828	WScript.exe	powershell.exe

C:\Users\Admin\AppData\Local\Temp\788d7a1994c74b57bfe297f43e1b408b.exe
"C:\Users\Admin\AppData\Local\Temp\788d7a1994c74b57bfe297f43e1b408b.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:852

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\_Empiqrhcndshiasq.vbs"
2⤵
- Suspicious use of WriteProcessMemory
PID:1828

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Set-MpPreference -ExclusionPath C:\,'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Downloads\drivereasy.exe'
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1320

C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1064

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
C:\Users\Admin\AppData\Local\Temp\_Empiqrhcndshiasq.vbs
MD5
d20d0d04021453ca8d8ae4d497af0ef1

SHA1
133ce778264b2566484017d7150dbc1dc943f5a6

SHA256
d11f836b675c371ce7710dfb36607501751b9087d89c3fb61b9cb5750c374606

SHA512
592f8417c8b2d95a8c35af09c0b51958fd405c43434fae19b910f607c9efbf860a00d7f2581dd00ef43c97eb5e7d63daf4e538143f416addf0366e9bd0db78cd

Download Submit
\Users\Admin\AppData\Local\Temp\InstallUtil.exe
MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
memory/852-54-0x0000000001050000-0x0000000001051000-memory.dmp

Filesize
4KB

Download
memory/852-56-0x00000000768C1000-0x00000000768C3000-memory.dmp

Filesize
8KB

Download
memory/852-57-0x0000000004A80000-0x0000000004A81000-memory.dmp

Filesize
4KB

Download
memory/852-58-0x0000000000570000-0x00000000005B5000-memory.dmp

Filesize
276KB

Download
memory/852-61-0x0000000004460000-0x0000000004472000-memory.dmp

Filesize
72KB

Download
memory/1064-67-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1064-65-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1064-66-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1064-68-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1064-64-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1064-69-0x000000000040C74E-mapping.dmp

Download
memory/1064-72-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1064-80-0x0000000000740000-0x0000000000741000-memory.dmp

Filesize
4KB

Download
memory/1320-74-0x0000000000000000-mapping.dmp

Download
memory/1320-77-0x0000000002390000-0x0000000002FDA000-memory.dmp

Filesize
12.3MB

Download
memory/1320-76-0x0000000002390000-0x0000000002FDA000-memory.dmp

Filesize
12.3MB

Download
memory/1320-78-0x0000000002390000-0x0000000002FDA000-memory.dmp

Filesize
12.3MB

Download
memory/1828-59-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads