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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Infected.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	Infected.exe

Executes dropped EXE 1 IoCs

Processes:

Temp.exe

pid process

2604 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

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

Processes:

timeout.exe

pid process

1640 timeout.exe

pid	process
2604	Temp.exe

pid	process
412	schtasks.exe

pid	process
1640	timeout.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

Infected.exeTemp.exe

pid	process
4564	Infected.exe
4564	Infected.exe
4564	Infected.exe
4564	Infected.exe
4564	Infected.exe
4564	Infected.exe
4564	Infected.exe
4564	Infected.exe
4564	Infected.exe
4564	Infected.exe
4564	Infected.exe
4564	Infected.exe
4564	Infected.exe
4564	Infected.exe
4564	Infected.exe
4564	Infected.exe
4564	Infected.exe
4564	Infected.exe
4564	Infected.exe
4564	Infected.exe
4564	Infected.exe
4564	Infected.exe
4564	Infected.exe
4564	Infected.exe
4564	Infected.exe
4564	Infected.exe
4564	Infected.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe
2604	Temp.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Infected.exeTemp.exe

description pid process

Token: SeDebugPrivilege 4564 Infected.exe
Token: SeDebugPrivilege 2604 Temp.exe

description	pid	process
Token: SeDebugPrivilege	4564	Infected.exe
Token: SeDebugPrivilege	2604	Temp.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

Infected.execmd.execmd.exe

description	pid	process	target process
PID 4564 wrote to memory of 3424	4564	Infected.exe	cmd.exe
PID 4564 wrote to memory of 3424	4564	Infected.exe	cmd.exe
PID 4564 wrote to memory of 4716	4564	Infected.exe	cmd.exe
PID 4564 wrote to memory of 4716	4564	Infected.exe	cmd.exe
PID 3424 wrote to memory of 412	3424	cmd.exe	schtasks.exe
PID 3424 wrote to memory of 412	3424	cmd.exe	schtasks.exe
PID 4716 wrote to memory of 1640	4716	cmd.exe	timeout.exe
PID 4716 wrote to memory of 1640	4716	cmd.exe	timeout.exe
PID 4716 wrote to memory of 2604	4716	cmd.exe	Temp.exe
PID 4716 wrote to memory of 2604	4716	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⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4564

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:3424

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:412

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp3BFF.tmp.bat""
2⤵
- Suspicious use of WriteProcessMemory
PID:4716

C:\Windows\system32\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:1640

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:2604

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

Query Registry

2

T1012

System Information Discovery

2

T1082

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\tmp3BFF.tmp.bat
Filesize
151B

MD5
6d4326edd7025cd2754f9d387f1210a1

SHA1
9a7daa47ab5ab787bc87590c7ee70372b8df7495

SHA256
da00013f44d93f4b52e4807b69e03f9389cb5e0de73d62bfef4c177b32ec544f

SHA512
7965e38ba84585e62dc7c61ce2578661fa1c4efd4553ee6ba7d6f611080f5a8652414c8c1cf8672c45a9792bf37eba76ca0e4f625af6971d6eb26b8983f15765

Download Submit
memory/2604-20-0x000000001CC40000-0x000000001CCB6000-memory.dmp

Filesize
472KB

Download
memory/2604-21-0x00000000017C0000-0x00000000017F4000-memory.dmp

Filesize
208KB

Download
memory/2604-25-0x00007FF96DFF0000-0x00007FF96E1E5000-memory.dmp

Filesize
2.0MB

Download
memory/2604-24-0x00000000017F0000-0x0000000001800000-memory.dmp

Filesize
64KB

Download
memory/2604-23-0x00007FF94FBF0000-0x00007FF9506B1000-memory.dmp

Filesize
10.8MB

Download
memory/2604-22-0x0000000003160000-0x000000000317E000-memory.dmp

Filesize
120KB

Download
memory/2604-14-0x00007FF94FBF0000-0x00007FF9506B1000-memory.dmp

Filesize
10.8MB

Download
memory/2604-15-0x00000000017F0000-0x0000000001800000-memory.dmp

Filesize
64KB

Download
memory/2604-16-0x00007FF96DFF0000-0x00007FF96E1E5000-memory.dmp

Filesize
2.0MB

Download
memory/2604-19-0x00007FF95E930000-0x00007FF95E949000-memory.dmp

Filesize
100KB

Download
memory/4564-2-0x000000001B1B0000-0x000000001B1C0000-memory.dmp

Filesize
64KB

Download
memory/4564-0-0x0000000000480000-0x0000000000496000-memory.dmp

Filesize
88KB

Download
memory/4564-1-0x00007FF94FFF0000-0x00007FF950AB1000-memory.dmp

Filesize
10.8MB

Download
memory/4564-8-0x00007FF95E930000-0x00007FF95E949000-memory.dmp

Filesize
100KB

Download
memory/4564-9-0x00007FF94FFF0000-0x00007FF950AB1000-memory.dmp

Filesize
10.8MB

Download
memory/4564-7-0x00007FF96DFF0000-0x00007FF96E1E5000-memory.dmp

Filesize
2.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads