asyncrat | 678d4084f84159e43cfb7acbeff823117b1a3610150bebefc202dcfe408b97c6

General

Target

f97285590fe7f6afbfc514ddd2bc538e.exe
Size

255KB
MD5

f97285590fe7f6afbfc514ddd2bc538e
SHA1

1268214c0978b144583a2ceaae238c2042b8ddc7
SHA256

678d4084f84159e43cfb7acbeff823117b1a3610150bebefc202dcfe408b97c6
SHA512

7f602b0f19bc90eb2ba66572cd4d6149ac3020a7acf36bada7667d16e782bf895475abd0498d4c30975830d8b68f51e2ad3fdf1a7a64c2e040eb497aa3f3d023

Score

10^/10

asyncrat default rat spyware stealer suricata

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

joselamartineslora09.duckdns.org:1980

Mutex

AsyncMutex_6SI8OkPnk

Attributes

anti_vm
false
bsod
false
delay
3
install
false
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 Generic njRAT/Bladabindi CnC Activity (ll)
suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)
suricata
suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)
suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)
suricata

Async RAT payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/680-123-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral2/memory/680-124-0x000000000040C75E-mapping.dmp	asyncrat

Executes dropped EXE 2 IoCs

Processes:

InstallUtil.exeInstallUtil.exe

pid process

2156 InstallUtil.exe
680 InstallUtil.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

pid	process
2156	InstallUtil.exe
680	InstallUtil.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

f97285590fe7f6afbfc514ddd2bc538e.exeInstallUtil.exe

description	pid	process	target process
PID 3496 set thread context of 680	3496	f97285590fe7f6afbfc514ddd2bc538e.exe	InstallUtil.exe
PID 680 set thread context of 2456	680	InstallUtil.exe	MSBuild.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 1 IoCs

Processes:

f97285590fe7f6afbfc514ddd2bc538e.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000_Classes\Local Settings	f97285590fe7f6afbfc514ddd2bc538e.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

f97285590fe7f6afbfc514ddd2bc538e.exepowershell.exe

pid	process
3496	f97285590fe7f6afbfc514ddd2bc538e.exe
3496	f97285590fe7f6afbfc514ddd2bc538e.exe
3496	f97285590fe7f6afbfc514ddd2bc538e.exe
3496	f97285590fe7f6afbfc514ddd2bc538e.exe
3496	f97285590fe7f6afbfc514ddd2bc538e.exe
3496	f97285590fe7f6afbfc514ddd2bc538e.exe
3440	powershell.exe
3440	powershell.exe
3440	powershell.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

Processes:

f97285590fe7f6afbfc514ddd2bc538e.exepowershell.exeInstallUtil.exeMSBuild.exe

description	pid	process
Token: SeDebugPrivilege	3496	f97285590fe7f6afbfc514ddd2bc538e.exe
Token: SeDebugPrivilege	3440	powershell.exe
Token: SeDebugPrivilege	680	InstallUtil.exe
Token: SeDebugPrivilege	2456	MSBuild.exe
Token: 33	2456	MSBuild.exe
Token: SeIncBasePriorityPrivilege	2456	MSBuild.exe
Token: 33	2456	MSBuild.exe
Token: SeIncBasePriorityPrivilege	2456	MSBuild.exe
Token: 33	2456	MSBuild.exe
Token: SeIncBasePriorityPrivilege	2456	MSBuild.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

f97285590fe7f6afbfc514ddd2bc538e.exeWScript.exeInstallUtil.exe

description	pid	process	target process
PID 3496 wrote to memory of 2856	3496	f97285590fe7f6afbfc514ddd2bc538e.exe	WScript.exe
PID 3496 wrote to memory of 2856	3496	f97285590fe7f6afbfc514ddd2bc538e.exe	WScript.exe
PID 3496 wrote to memory of 2856	3496	f97285590fe7f6afbfc514ddd2bc538e.exe	WScript.exe
PID 3496 wrote to memory of 2156	3496	f97285590fe7f6afbfc514ddd2bc538e.exe	InstallUtil.exe
PID 3496 wrote to memory of 2156	3496	f97285590fe7f6afbfc514ddd2bc538e.exe	InstallUtil.exe
PID 3496 wrote to memory of 2156	3496	f97285590fe7f6afbfc514ddd2bc538e.exe	InstallUtil.exe
PID 3496 wrote to memory of 680	3496	f97285590fe7f6afbfc514ddd2bc538e.exe	InstallUtil.exe
PID 3496 wrote to memory of 680	3496	f97285590fe7f6afbfc514ddd2bc538e.exe	InstallUtil.exe
PID 3496 wrote to memory of 680	3496	f97285590fe7f6afbfc514ddd2bc538e.exe	InstallUtil.exe
PID 3496 wrote to memory of 680	3496	f97285590fe7f6afbfc514ddd2bc538e.exe	InstallUtil.exe
PID 3496 wrote to memory of 680	3496	f97285590fe7f6afbfc514ddd2bc538e.exe	InstallUtil.exe
PID 3496 wrote to memory of 680	3496	f97285590fe7f6afbfc514ddd2bc538e.exe	InstallUtil.exe
PID 3496 wrote to memory of 680	3496	f97285590fe7f6afbfc514ddd2bc538e.exe	InstallUtil.exe
PID 3496 wrote to memory of 680	3496	f97285590fe7f6afbfc514ddd2bc538e.exe	InstallUtil.exe
PID 2856 wrote to memory of 3440	2856	WScript.exe	powershell.exe
PID 2856 wrote to memory of 3440	2856	WScript.exe	powershell.exe
PID 2856 wrote to memory of 3440	2856	WScript.exe	powershell.exe
PID 680 wrote to memory of 2456	680	InstallUtil.exe	MSBuild.exe
PID 680 wrote to memory of 2456	680	InstallUtil.exe	MSBuild.exe
PID 680 wrote to memory of 2456	680	InstallUtil.exe	MSBuild.exe
PID 680 wrote to memory of 2456	680	InstallUtil.exe	MSBuild.exe
PID 680 wrote to memory of 2456	680	InstallUtil.exe	MSBuild.exe
PID 680 wrote to memory of 2456	680	InstallUtil.exe	MSBuild.exe
PID 680 wrote to memory of 2456	680	InstallUtil.exe	MSBuild.exe
PID 680 wrote to memory of 2456	680	InstallUtil.exe	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\f97285590fe7f6afbfc514ddd2bc538e.exe
"C:\Users\Admin\AppData\Local\Temp\f97285590fe7f6afbfc514ddd2bc538e.exe"
1⤵
- Suspicious use of SetThreadContext
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3496

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\_Tikbwdnflqabculmypdmfm.vbs"
2⤵
- Suspicious use of WriteProcessMemory
PID:2856

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\iobituninstaller.exe'
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3440

C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
2⤵
- Executes dropped EXE
PID:2156

C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:680

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
3⤵
- Suspicious use of AdjustPrivilegeToken
PID:2456

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

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\InstallUtil.exe
MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
C:\Users\Admin\AppData\Local\Temp\_Tikbwdnflqabculmypdmfm.vbs
MD5
5688b2eb801a351378401ff15237c20f

SHA1
5cbf0e609ac127d8d4bcdff972cdc61a310b702a

SHA256
fcd85a624694b7643dfa007fcff9d14c0fa18b311a9add2cabf6d8f81541b3ce

SHA512
d5a72caed29e8c362770d131a139d2c143d5b898f25b04d56b76f1ebec206faaebbd2343407e6d7204665f7e1986b7a3861b31d7859208b6979094e387775dba

Download Submit
memory/680-142-0x00000000056E0000-0x00000000056E1000-memory.dmp

Filesize
4KB

Download
memory/680-123-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/680-124-0x000000000040C75E-mapping.dmp

Download
memory/2456-393-0x000000000040678E-mapping.dmp

Download
memory/2456-399-0x0000000005160000-0x000000000565E000-memory.dmp

Filesize
5.0MB

Download
memory/2856-119-0x0000000000000000-mapping.dmp

Download
memory/3440-137-0x0000000007CA0000-0x0000000007CA1000-memory.dmp

Filesize
4KB

Download
memory/3440-141-0x0000000008400000-0x0000000008401000-memory.dmp

Filesize
4KB

Download
memory/3440-130-0x0000000003200000-0x0000000003201000-memory.dmp

Filesize
4KB

Download
memory/3440-131-0x0000000003200000-0x0000000003201000-memory.dmp

Filesize
4KB

Download
memory/3440-132-0x0000000006EB0000-0x0000000006EB1000-memory.dmp

Filesize
4KB

Download
memory/3440-133-0x0000000007580000-0x0000000007581000-memory.dmp

Filesize
4KB

Download
memory/3440-135-0x0000000006F42000-0x0000000006F43000-memory.dmp

Filesize
4KB

Download
memory/3440-134-0x0000000006F40000-0x0000000006F41000-memory.dmp

Filesize
4KB

Download
memory/3440-136-0x00000000074D0000-0x00000000074D1000-memory.dmp

Filesize
4KB

Download
memory/3440-166-0x0000000009940000-0x0000000009941000-memory.dmp

Filesize
4KB

Download
memory/3440-138-0x0000000007DC0000-0x0000000007DC1000-memory.dmp

Filesize
4KB

Download
memory/3440-139-0x0000000007F30000-0x0000000007F31000-memory.dmp

Filesize
4KB

Download
memory/3440-140-0x00000000083C0000-0x00000000083C1000-memory.dmp

Filesize
4KB

Download
memory/3440-127-0x0000000000000000-mapping.dmp

Download
memory/3440-164-0x000000007EBC0000-0x000000007EBC1000-memory.dmp

Filesize
4KB

Download
memory/3440-143-0x00000000086D0000-0x00000000086D1000-memory.dmp

Filesize
4KB

Download
memory/3440-144-0x0000000003200000-0x0000000003201000-memory.dmp

Filesize
4KB

Download
memory/3440-151-0x0000000009420000-0x0000000009453000-memory.dmp

Filesize
204KB

Download
memory/3440-158-0x0000000009400000-0x0000000009401000-memory.dmp

Filesize
4KB

Download
memory/3440-163-0x0000000009560000-0x0000000009561000-memory.dmp

Filesize
4KB

Download
memory/3440-165-0x0000000006F43000-0x0000000006F44000-memory.dmp

Filesize
4KB

Download
memory/3496-115-0x00000000009D0000-0x00000000009D1000-memory.dmp

Filesize
4KB

Download
memory/3496-120-0x0000000005520000-0x0000000005532000-memory.dmp

Filesize
72KB

Download
memory/3496-117-0x0000000005200000-0x0000000005237000-memory.dmp

Filesize
220KB

Download
memory/3496-118-0x0000000005410000-0x0000000005411000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads