asyncrat | 08d215fd35494280e6397e8bc527bd6de64eb78a73acd3bd07a01da376ed4cb7

Analysis

max time kernel
148s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
16-03-2024 04:03

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General

Target

BattleText.exe
Size

79KB
MD5

ac98d5e7f59a9feb167f01c6749baccb
SHA1

80be262b88d22230ebd7a44e03ddd810092fdfb5
SHA256

c7e4b8b9ded5df50dc1b2b8e6af95cb6cfb310c20be19c879c48a83371b345da
SHA512

6ff2a6713691b097ccd678f6275624ed88561aa4458a3d5e2b9bfece60d4cfccdf0c4a88aba0728569126648c1a93972c45807ae077c60203f1eee63f5bca368
SSDEEP

768:nMEuOeT2wsgkVTMEAnqqbiHsT5OzK5cFCdkS4hqXoxWbeVLJE0PZL:MD9yQkrAPasTAzK5NdkuYxE4/PZL

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

shortcut2021.duckdns.org:6001

Mutex

AsyncMutex_6SI8OkPnk

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
Detects executables containing URLs to raw contents of a Github gist 1 IoCs

Processes:

resource yara_rule

behavioral16/memory/2896-0-0x0000000000EA0000-0x0000000000EBA000-memory.dmp INDICATOR_SUSPICIOUS_EXE_RawGitHub_URL
Detects file containing reversed ASEP Autorun registry keys 1 IoCs

Processes:

resource yara_rule

behavioral16/memory/2068-12-0x0000000000400000-0x0000000000412000-memory.dmp INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse

resource	yara_rule
behavioral16/memory/2896-0-0x0000000000EA0000-0x0000000000EBA000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_RawGitHub_URL

resource	yara_rule
behavioral16/memory/2068-12-0x0000000000400000-0x0000000000412000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse

Drops startup file 2 IoCs

Processes:

BattleText.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\BattleText.exe	BattleText.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\BattleText.exe	BattleText.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service
T1102

Processes:

flow ioc

37 raw.githubusercontent.com
38 raw.githubusercontent.com
Suspicious use of SetThreadContext 1 IoCs

Processes:

BattleText.exe

description pid process target process

PID 2896 set thread context of 2068 2896 BattleText.exe BattleText.exe

flow	ioc
37	raw.githubusercontent.com
38	raw.githubusercontent.com

description	pid	process	target process
PID 2896 set thread context of 2068	2896	BattleText.exe	BattleText.exe

Suspicious behavior: EnumeratesProcesses 51 IoCs

Processes:

BattleText.exe

pid	process
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe
2896	BattleText.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

BattleText.exe

description pid process

Token: SeDebugPrivilege 2896 BattleText.exe

description	pid	process
Token: SeDebugPrivilege	2896	BattleText.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

BattleText.exe

description	pid	process	target process
PID 2896 wrote to memory of 2068	2896	BattleText.exe	BattleText.exe
PID 2896 wrote to memory of 2068	2896	BattleText.exe	BattleText.exe
PID 2896 wrote to memory of 2068	2896	BattleText.exe	BattleText.exe
PID 2896 wrote to memory of 2068	2896	BattleText.exe	BattleText.exe
PID 2896 wrote to memory of 2068	2896	BattleText.exe	BattleText.exe
PID 2896 wrote to memory of 2068	2896	BattleText.exe	BattleText.exe
PID 2896 wrote to memory of 2068	2896	BattleText.exe	BattleText.exe
PID 2896 wrote to memory of 2068	2896	BattleText.exe	BattleText.exe

C:\Users\Admin\AppData\Local\Temp\BattleText.exe
"C:\Users\Admin\AppData\Local\Temp\BattleText.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2896

C:\Users\Admin\AppData\Local\Temp\BattleText.exe
"C:\Users\Admin\AppData\Local\Temp\BattleText.exe"
2⤵
PID:2068

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

T1102

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

memory/2068-12-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2068-18-0x0000000004D70000-0x0000000004D80000-memory.dmp

Filesize
64KB

Download
memory/2068-17-0x0000000074B50000-0x0000000075300000-memory.dmp

Filesize
7.7MB

Download
memory/2068-16-0x0000000004D70000-0x0000000004D80000-memory.dmp

Filesize
64KB

Download
memory/2068-15-0x0000000074B50000-0x0000000075300000-memory.dmp

Filesize
7.7MB

Download
memory/2896-4-0x0000000005870000-0x0000000005880000-memory.dmp

Filesize
64KB

Download
memory/2896-6-0x0000000005F70000-0x0000000005F98000-memory.dmp

Filesize
160KB

Download
memory/2896-7-0x0000000006C30000-0x0000000006CCC000-memory.dmp

Filesize
624KB

Download
memory/2896-8-0x0000000006CD0000-0x0000000006D36000-memory.dmp

Filesize
408KB

Download
memory/2896-10-0x0000000006D80000-0x0000000006D81000-memory.dmp

Filesize
4KB

Download
memory/2896-5-0x0000000005960000-0x000000000596A000-memory.dmp

Filesize
40KB

Download
memory/2896-14-0x0000000074B50000-0x0000000075300000-memory.dmp

Filesize
7.7MB

Download
memory/2896-0-0x0000000000EA0000-0x0000000000EBA000-memory.dmp

Filesize
104KB

Download
memory/2896-3-0x00000000058C0000-0x0000000005952000-memory.dmp

Filesize
584KB

Download
memory/2896-2-0x0000000005FA0000-0x0000000006544000-memory.dmp

Filesize
5.6MB

Download
memory/2896-1-0x0000000074B50000-0x0000000075300000-memory.dmp

Filesize
7.7MB

Download