asyncrat | a45fe62e39211eb7717ad31b5428e86789947bd2cb2628e2ed5c55989416e2b3

General

Target

Infected.exe
Size

63KB
MD5

922ab616f4075a16637cd5ec43aa65e9
SHA1

10138fa4081ab37ed37ffe12ac8b4e8c72e40913
SHA256

a45fe62e39211eb7717ad31b5428e86789947bd2cb2628e2ed5c55989416e2b3
SHA512

93e07e54ac4e8af65636c25ce7cd8069fbb3f5c641ac7721edfbd202443a5c2f5b5d7b02b4a9ca6cf2faa5189877deb9d99661ee15ff77c037ab856969aacd8e
SSDEEP

768:A7yb0xqDayjrHrN78xIC8A+XjJazcBRL5JTk1+T4KSBGHmDbD/ph0oXa8lSnCwST:tQMLVzdSJYUbdh9a8X3uYdpqKmY7

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

choice-certainly.gl.at.ply.gg:24253

Attributes

delay
1
install
true
install_file
Temp.exe
install_folder
%Temp%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\Temp.exe	family_asyncrat

Executes dropped EXE 1 IoCs

Processes:

Temp.exe

pid process

2096 Temp.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
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

2572 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2920 timeout.exe

pid	process
2096	Temp.exe

pid	process
2572	schtasks.exe

pid	process
2920	timeout.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

Infected.exeTemp.exe

pid	process
2236	Infected.exe
2236	Infected.exe
2236	Infected.exe
2236	Infected.exe
2236	Infected.exe
2236	Infected.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe
2096	Temp.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Infected.exeTemp.exe

description pid process

Token: SeDebugPrivilege 2236 Infected.exe
Token: SeDebugPrivilege 2096 Temp.exe

description	pid	process
Token: SeDebugPrivilege	2236	Infected.exe
Token: SeDebugPrivilege	2096	Temp.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

Infected.execmd.execmd.exe

description	pid	process	target process
PID 2236 wrote to memory of 2652	2236	Infected.exe	cmd.exe
PID 2236 wrote to memory of 2652	2236	Infected.exe	cmd.exe
PID 2236 wrote to memory of 2652	2236	Infected.exe	cmd.exe
PID 2236 wrote to memory of 3024	2236	Infected.exe	cmd.exe
PID 2236 wrote to memory of 3024	2236	Infected.exe	cmd.exe
PID 2236 wrote to memory of 3024	2236	Infected.exe	cmd.exe
PID 2652 wrote to memory of 2572	2652	cmd.exe	schtasks.exe
PID 2652 wrote to memory of 2572	2652	cmd.exe	schtasks.exe
PID 2652 wrote to memory of 2572	2652	cmd.exe	schtasks.exe
PID 3024 wrote to memory of 2920	3024	cmd.exe	timeout.exe
PID 3024 wrote to memory of 2920	3024	cmd.exe	timeout.exe
PID 3024 wrote to memory of 2920	3024	cmd.exe	timeout.exe
PID 3024 wrote to memory of 2096	3024	cmd.exe	Temp.exe
PID 3024 wrote to memory of 2096	3024	cmd.exe	Temp.exe
PID 3024 wrote to memory of 2096	3024	cmd.exe	Temp.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\Infected.exe
"C:\Users\Admin\AppData\Local\Temp\Infected.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2236

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Temp" /tr '"C:\Users\Admin\AppData\Local\Temp\Temp.exe"' & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:2652

C:\Windows\system32\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "Temp" /tr '"C:\Users\Admin\AppData\Local\Temp\Temp.exe"'
3⤵
- Creates scheduled task(s)
PID:2572

C:\Windows\system32\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpB5A9.tmp.bat""
2⤵
- Suspicious use of WriteProcessMemory
PID:3024

C:\Windows\system32\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:2920

C:\Users\Admin\AppData\Local\Temp\Temp.exe
"C:\Users\Admin\AppData\Local\Temp\Temp.exe"
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2096

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

Discovery

System Information Discovery

1

T1082

Query Registry

1

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\Temp.exe
Filesize
63KB

MD5
922ab616f4075a16637cd5ec43aa65e9

SHA1
10138fa4081ab37ed37ffe12ac8b4e8c72e40913

SHA256
a45fe62e39211eb7717ad31b5428e86789947bd2cb2628e2ed5c55989416e2b3

SHA512
93e07e54ac4e8af65636c25ce7cd8069fbb3f5c641ac7721edfbd202443a5c2f5b5d7b02b4a9ca6cf2faa5189877deb9d99661ee15ff77c037ab856969aacd8e

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpB5A9.tmp.bat
Filesize
151B

MD5
21b7756f7d4073bc3aba2ad2de096148

SHA1
f0fc599dd9523341ba166e3931f58b51dba30521

SHA256
7232aa55b1008ce61f7363998feacd4c708c62e368e22c349f7757cd2e99d219

SHA512
bfbde5708703acd45ca60b140dcdccb0abce9066002c65b2b51912c34b07ffe6117aa5370aae7bf6363c657c76925ef5ffad60bcbb547bac722c1e12faf8e965

Download Submit
memory/2096-18-0x0000000000080000-0x0000000000096000-memory.dmp

Filesize
88KB

Download
memory/2096-41-0x0000000076EF0000-0x0000000077099000-memory.dmp

Filesize
1.7MB

Download
memory/2096-40-0x0000000001F40000-0x0000000001FC0000-memory.dmp

Filesize
512KB

Download
memory/2096-39-0x000007FEF47B0000-0x000007FEF519C000-memory.dmp

Filesize
9.9MB

Download
memory/2096-21-0x0000000076EF0000-0x0000000077099000-memory.dmp

Filesize
1.7MB

Download
memory/2096-20-0x0000000001F40000-0x0000000001FC0000-memory.dmp

Filesize
512KB

Download
memory/2096-19-0x000007FEF47B0000-0x000007FEF519C000-memory.dmp

Filesize
9.9MB

Download
memory/2236-3-0x0000000076EF0000-0x0000000077099000-memory.dmp

Filesize
1.7MB

Download
memory/2236-13-0x000007FEF51A0000-0x000007FEF5B8C000-memory.dmp

Filesize
9.9MB

Download
memory/2236-14-0x0000000076EF0000-0x0000000077099000-memory.dmp

Filesize
1.7MB

Download
memory/2236-0-0x00000000001D0000-0x00000000001E6000-memory.dmp

Filesize
88KB

Download
memory/2236-2-0x000000001B160000-0x000000001B1E0000-memory.dmp

Filesize
512KB

Download
memory/2236-1-0x000007FEF51A0000-0x000007FEF5B8C000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads