asyncrat | 3e123119dcb3489d8a329f5c8cfc122f14191df2943d48a1843687fca316cc7c

General

Target

client1.exe
Size

106KB
MD5

a45243a9a3bbe9e9fa4ba48c406a83b4
SHA1

b8bad2bfe29580012897f0e514f3414ca2d2ae6f
SHA256

3e123119dcb3489d8a329f5c8cfc122f14191df2943d48a1843687fca316cc7c
SHA512

463030a54cbf4209eb3b9450b295cfae5f0f799c803df7fd996ac397c9c029926fdd638255bc7d93c8c4ac0dd5d4c5dd1a2022677c889c6dd7bf8e57c9416329
SSDEEP

1536:JxqjQ+P04wsmJC7SX+FDsWmPbaYk/ocpqKmY7y/Nl3r+xuw58KNFfY:sr85C7SYDsDPbaYk/o3zTbS351NFfY

Score

10^/10

asyncrat neshta persistence rat spyware stealer

Malware Config

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat
Modifies system executable filetype association 2 TTPs 1 IoCs
persistence

Modify Registry
T1112

Change Default File Association
T1042

Processes:

client1.exe

description ioc process

Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*" client1.exe
Neshta
Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.
persistence spyware neshta

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*"	client1.exe

Async RAT payload 4 IoCs

rat

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Temp\3582-490\client1.exe	asyncrat
C:\Users\Admin\AppData\Local\Temp\3582-490\client1.exe	asyncrat
C:\Users\Admin\AppData\Local\Temp\3582-490\client1.exe	asyncrat
behavioral1/memory/1600-59-0x0000000000150000-0x0000000000166000-memory.dmp	asyncrat

Executes dropped EXE 1 IoCs

Processes:

client1.exe

pid process

1600 client1.exe
Loads dropped DLL 2 IoCs

Processes:

client1.exe

pid process

1436 client1.exe
1436 client1.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
1600	client1.exe

pid	process
1436	client1.exe
1436	client1.exe

Drops file in Program Files directory 64 IoCs

Processes:

client1.exe

description	ioc	process
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\LICLUA.EXE	client1.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GOBD5D~1.EXE	client1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\OIS.EXE	client1.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmpconfig.exe	client1.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\ADOBEC~1.EXE	client1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOHTMED.EXE	client1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\NAMECO~1.EXE	client1.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\TextConv\WksConv\Wkconv.exe	client1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\CLVIEW.EXE	client1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSQRY32.EXE	client1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\XLICONS.EXE	client1.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\setup_wm.exe	client1.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\Updater6\ADOBE_~1.EXE	client1.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\ink\mip.exe	client1.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\Oarpmany.exe	client1.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmplayer.exe	client1.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\DW\DWTRIG20.EXE	client1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\VPREVIEW.EXE	client1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\WINWORD.EXE	client1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\WORDICON.EXE	client1.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\SOURCE~1\OSE.EXE	client1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\GROOVEMN.EXE	client1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\POWERPNT.EXE	client1.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{CA675~1\VCREDI~1.EXE	client1.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\ACROBR~1.EXE	client1.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\OFFICE~1\ODeploy.exe	client1.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{4D8DC~1\VC_RED~1.EXE	client1.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\Updater6\ADOBEU~1.EXE	client1.exe
File opened for modification	C:\PROGRA~2\WINDOW~1\WinMail.exe	client1.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmprph.exe	client1.exe
File opened for modification	C:\PROGRA~2\Google\Update\DISABL~1.EXE	client1.exe
File opened for modification	C:\PROGRA~2\WI4223~1\sidebar.exe	client1.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\MSOXMLED.EXE	client1.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE	client1.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\VSTO\10.0\VSTOIN~1.EXE	client1.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\ACCESS~1\wordpad.exe	client1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOSYNC.EXE	client1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSTORE.EXE	client1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\PPTICO.EXE	client1.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\SETUPF~1\{AC76B~1\Setup.exe	client1.exe
File opened for modification	C:\PROGRA~2\INTERN~1\iexplore.exe	client1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\GRAPH.EXE	client1.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GOOGLE~2.EXE	client1.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ielowutil.exe	client1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\ACCICONS.EXE	client1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\BCSSync.exe	client1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\IECONT~1.EXE	client1.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\A3DUTI~1.EXE	client1.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\FLTLDR.EXE	client1.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GO664E~1.EXE	client1.exe
File opened for modification	C:\PROGRA~2\WINDOW~1\wab.exe	client1.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmlaunch.exe	client1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSTORDB.EXE	client1.exe
File opened for modification	C:\PROGRA~2\WINDOW~1\wabmig.exe	client1.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{61087~1\VCREDI~1.EXE	client1.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{EF6B0~1\VCREDI~1.EXE	client1.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\OFFICE~1\Setup.exe	client1.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GOF5E2~1.EXE	client1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\CNFNOT32.EXE	client1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\ONENOTE.EXE	client1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\SELFCERT.EXE	client1.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\WMPDMC.exe	client1.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmpshare.exe	client1.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{33D1F~1\VCREDI~1.EXE	client1.exe

Drops file in Windows directory 1 IoCs

Processes:

client1.exe

description ioc process

File opened for modification C:\Windows\svchost.com client1.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:

client1.exe

description ioc process

Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*" client1.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

client1.exe

description pid process

Token: SeDebugPrivilege 1600 client1.exe

description	ioc	process
File opened for modification	C:\Windows\svchost.com	client1.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*"	client1.exe

description	pid	process
Token: SeDebugPrivilege	1600	client1.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

client1.exe

description	pid	process	target process
PID 1436 wrote to memory of 1600	1436	client1.exe	client1.exe
PID 1436 wrote to memory of 1600	1436	client1.exe	client1.exe
PID 1436 wrote to memory of 1600	1436	client1.exe	client1.exe
PID 1436 wrote to memory of 1600	1436	client1.exe	client1.exe

C:\Users\Admin\AppData\Local\Temp\client1.exe
"C:\Users\Admin\AppData\Local\Temp\client1.exe"
1⤵
- Modifies system executable filetype association
- Loads dropped DLL
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1436
- C:\Users\Admin\AppData\Local\Temp\3582-490\client1.exe
  "C:\Users\Admin\AppData\Local\Temp\3582-490\client1.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1600

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Change Default File Association

1

T1042

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\3582-490\client1.exe

Filesize
65KB

MD5
c72d1b2751586e5b6dd80710ea3cc10e

SHA1
6954173e6bab5f8c9a156625429e472453b7423f

SHA256
87b7ab290b7e94c5ec2af820bfe975f8e8897478214c2f98f8e2907114595fac

SHA512
fa309a7fcb9f2810ab81699ebbbc22ddccb047b4bce6daf6789703cb5e4bded253ba00dfada9bc9b2d2a02b8c38c5893dfc2917a4806c0b464f12c1057cf5806

Download Submit
C:\Users\Admin\AppData\Local\Temp\3582-490\client1.exe

Filesize
65KB

MD5
c72d1b2751586e5b6dd80710ea3cc10e

SHA1
6954173e6bab5f8c9a156625429e472453b7423f

SHA256
87b7ab290b7e94c5ec2af820bfe975f8e8897478214c2f98f8e2907114595fac

SHA512
fa309a7fcb9f2810ab81699ebbbc22ddccb047b4bce6daf6789703cb5e4bded253ba00dfada9bc9b2d2a02b8c38c5893dfc2917a4806c0b464f12c1057cf5806

Download Submit
\PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE

Filesize
252KB

MD5
9e2b9928c89a9d0da1d3e8f4bd96afa7

SHA1
ec66cda99f44b62470c6930e5afda061579cde35

SHA256
8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

SHA512
2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

Download Submit
\Users\Admin\AppData\Local\Temp\3582-490\client1.exe

Filesize
65KB

MD5
c72d1b2751586e5b6dd80710ea3cc10e

SHA1
6954173e6bab5f8c9a156625429e472453b7423f

SHA256
87b7ab290b7e94c5ec2af820bfe975f8e8897478214c2f98f8e2907114595fac

SHA512
fa309a7fcb9f2810ab81699ebbbc22ddccb047b4bce6daf6789703cb5e4bded253ba00dfada9bc9b2d2a02b8c38c5893dfc2917a4806c0b464f12c1057cf5806

Download Submit
memory/1436-54-0x0000000075601000-0x0000000075603000-memory.dmp

Filesize
8KB

Download
memory/1600-56-0x0000000000000000-mapping.dmp

Download
memory/1600-59-0x0000000000150000-0x0000000000166000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads