asyncrat | c1b1fabf3da9baf3d63792802c211736dcc8f398ec4d59045284f75cb3d7d49c

General

Target

c1b1fabf3da9baf3d63792802c211736dcc8f398ec4d59045284f75cb3d7d49c.exe
Size

339KB
MD5

3b3329be5d126e62ea8d68e39c4b31ef
SHA1

18c7b121b0b4a303ad797374a1bbc6756364379c
SHA256

c1b1fabf3da9baf3d63792802c211736dcc8f398ec4d59045284f75cb3d7d49c
SHA512

70079c6e87e7a7e1754c8ea5848f06dc4512226fd87a5b677716e41844ac0ba2bda81e6885ad3555b3ed2432ac3830e427564d09d41dd1ec3d27a7c3eb77d02a
SSDEEP

6144:UukEhlxtM+hkmVvIF9OLTulOuVIYfeVrwGZy50uSvOKaxuAyEOEFMy0:U5utTx+s+50u/KmuAagr

Score

10^/10

asyncrat neq rat spyware stealer

Malware Config

Extracted

Family

asyncrat

Version

AWS | 3Losh

Botnet

neq

C2

goodone.loseyourip.com:6606

goodone.loseyourip.com:7707

goodone.loseyourip.com:8808

Mutex

AsyncMutex_adnocxxs

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

Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs. 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2516-13-0x0000000000400000-0x0000000000416000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_Embedded_Crypto_Wallet_Browser_Extension_IDs
behavioral1/memory/2516-10-0x0000000000400000-0x0000000000416000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_Embedded_Crypto_Wallet_Browser_Extension_IDs
behavioral1/memory/2516-8-0x0000000000400000-0x0000000000416000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_Embedded_Crypto_Wallet_Browser_Extension_IDs
behavioral1/memory/2516-16-0x0000000000400000-0x0000000000416000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_Embedded_Crypto_Wallet_Browser_Extension_IDs
behavioral1/memory/2516-18-0x0000000000400000-0x0000000000416000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_Embedded_Crypto_Wallet_Browser_Extension_IDs

Detects file containing reversed ASEP Autorun registry keys 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2516-13-0x0000000000400000-0x0000000000416000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse
behavioral1/memory/2516-10-0x0000000000400000-0x0000000000416000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse
behavioral1/memory/2516-8-0x0000000000400000-0x0000000000416000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse
behavioral1/memory/2516-16-0x0000000000400000-0x0000000000416000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse
behavioral1/memory/2516-18-0x0000000000400000-0x0000000000416000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse

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
T1552.001

Suspicious use of SetThreadContext 1 IoCs

Processes:

c1b1fabf3da9baf3d63792802c211736dcc8f398ec4d59045284f75cb3d7d49c.exe

description	pid	process	target process
PID 1848 set thread context of 2516	1848	c1b1fabf3da9baf3d63792802c211736dcc8f398ec4d59045284f75cb3d7d49c.exe	RegAsm.exe

Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exe

pid process

2524 schtasks.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

RegAsm.exe

pid process

2516 RegAsm.exe

pid	process
2524	schtasks.exe

pid	process
2516	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

c1b1fabf3da9baf3d63792802c211736dcc8f398ec4d59045284f75cb3d7d49c.exeRegAsm.exe

description	pid	process
Token: SeDebugPrivilege	1848	c1b1fabf3da9baf3d63792802c211736dcc8f398ec4d59045284f75cb3d7d49c.exe
Token: SeDebugPrivilege	2516	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RegAsm.exe

pid process

2516 RegAsm.exe

pid	process
2516	RegAsm.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

c1b1fabf3da9baf3d63792802c211736dcc8f398ec4d59045284f75cb3d7d49c.exe

description	pid	process	target process
PID 1848 wrote to memory of 2516	1848	c1b1fabf3da9baf3d63792802c211736dcc8f398ec4d59045284f75cb3d7d49c.exe	RegAsm.exe
PID 1848 wrote to memory of 2516	1848	c1b1fabf3da9baf3d63792802c211736dcc8f398ec4d59045284f75cb3d7d49c.exe	RegAsm.exe
PID 1848 wrote to memory of 2516	1848	c1b1fabf3da9baf3d63792802c211736dcc8f398ec4d59045284f75cb3d7d49c.exe	RegAsm.exe
PID 1848 wrote to memory of 2516	1848	c1b1fabf3da9baf3d63792802c211736dcc8f398ec4d59045284f75cb3d7d49c.exe	RegAsm.exe
PID 1848 wrote to memory of 2516	1848	c1b1fabf3da9baf3d63792802c211736dcc8f398ec4d59045284f75cb3d7d49c.exe	RegAsm.exe
PID 1848 wrote to memory of 2516	1848	c1b1fabf3da9baf3d63792802c211736dcc8f398ec4d59045284f75cb3d7d49c.exe	RegAsm.exe
PID 1848 wrote to memory of 2516	1848	c1b1fabf3da9baf3d63792802c211736dcc8f398ec4d59045284f75cb3d7d49c.exe	RegAsm.exe
PID 1848 wrote to memory of 2516	1848	c1b1fabf3da9baf3d63792802c211736dcc8f398ec4d59045284f75cb3d7d49c.exe	RegAsm.exe
PID 1848 wrote to memory of 2516	1848	c1b1fabf3da9baf3d63792802c211736dcc8f398ec4d59045284f75cb3d7d49c.exe	RegAsm.exe
PID 1848 wrote to memory of 2516	1848	c1b1fabf3da9baf3d63792802c211736dcc8f398ec4d59045284f75cb3d7d49c.exe	RegAsm.exe
PID 1848 wrote to memory of 2516	1848	c1b1fabf3da9baf3d63792802c211736dcc8f398ec4d59045284f75cb3d7d49c.exe	RegAsm.exe
PID 1848 wrote to memory of 2516	1848	c1b1fabf3da9baf3d63792802c211736dcc8f398ec4d59045284f75cb3d7d49c.exe	RegAsm.exe
PID 1848 wrote to memory of 2524	1848	c1b1fabf3da9baf3d63792802c211736dcc8f398ec4d59045284f75cb3d7d49c.exe	schtasks.exe
PID 1848 wrote to memory of 2524	1848	c1b1fabf3da9baf3d63792802c211736dcc8f398ec4d59045284f75cb3d7d49c.exe	schtasks.exe
PID 1848 wrote to memory of 2524	1848	c1b1fabf3da9baf3d63792802c211736dcc8f398ec4d59045284f75cb3d7d49c.exe	schtasks.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\c1b1fabf3da9baf3d63792802c211736dcc8f398ec4d59045284f75cb3d7d49c.exe
"C:\Users\Admin\AppData\Local\Temp\c1b1fabf3da9baf3d63792802c211736dcc8f398ec4d59045284f75cb3d7d49c.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1848

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2516

C:\Windows\system32\schtasks.exe
"schtasks.exe" /Create /SC MINUTE /MO 14 /TN "DivideShift" /TR "C:\Users\Admin\AppData\Roaming\Ex32_Sequence\c1b1fabf3da9baf3d63792802c211736dcc8f398ec4d59045284f75cb3d7d49c.exe" /F
2⤵
- Creates scheduled task(s)
PID:2524

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

1

T1012

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

memory/1848-0-0x000007FEF5A13000-0x000007FEF5A14000-memory.dmp

Filesize
4KB

Download
memory/1848-1-0x0000000000240000-0x000000000029C000-memory.dmp

Filesize
368KB

Download
memory/1848-2-0x000007FEF5A10000-0x000007FEF63FC000-memory.dmp

Filesize
9.9MB

Download
memory/1848-3-0x0000000000620000-0x000000000062A000-memory.dmp

Filesize
40KB

Download
memory/1848-19-0x000007FEF5A10000-0x000007FEF63FC000-memory.dmp

Filesize
9.9MB

Download
memory/2516-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2516-13-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2516-10-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2516-8-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2516-6-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2516-16-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2516-18-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2516-4-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads