asyncrat | c61b8136e5397b8ccecfb2b7603fc265b847b84e27634bf5c13d7e1a79c7f2ab

Resubmissions

25/02/2024, 13:19

240225-qkntescd8610

25/02/2024, 13:15

240225-qhcclscd4810

Analysis

max time kernel
146s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
25/02/2024, 13:15

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
TEST.exe
Size 47KB
Sample240225-qhcclscd48
SHA256 c61b8136e5397b8ccecfb2b7603fc265b847b84e27634bf5c13d7e1a79c7f2ab
MD5 4cd151ec5304dce3ef3b1cab2206215e
SHA1 57ec7a79aee5d609e3531ad8a7d7200beb4595a3
SHA512 efb22e3eda9bf720c27a27044f37cd8ae290f8bca20f6c1bf6e65c54fefdceed3e73cd4de939a9ae5c6448a82faa7e6e5a8edebd84b202da7fad33f6a00cacf1
SSDEEP 768:xuMvdTHfEmGKWUc6vQmo2qsaPocAmU444PIwWWN0bilvnLDmdSzsTyDMNKOYqXBs:xuMvdTHfhy2KPo7xwWtbil/vmysx7RdO
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

asyncrat adsf rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

adsf

FearME-45002.portmap.host:39837
FearME-45002.portmap.host:5555
FearME-45002.portmap.host:6666
FearME-45002.portmap.host:45002

Mutex

VAD4JZqlIWxT

Attributes

delay
3
install
true
install_file
lmao.exe
install_folder
%AppData%

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

resource	yara_rule
behavioral2/files/0x0007000000023218-11.dat	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1790404759-2178872477-2616469472-1000\Control Panel\International\Geo\Nation	TEST.exe

Executes dropped EXE 1 IoCs

pid	Process
3708	lmao.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

pid	Process
4508	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2652	timeout.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
3208	TEST.exe
3208	TEST.exe
3208	TEST.exe
3208	TEST.exe
3208	TEST.exe
3208	TEST.exe
3208	TEST.exe
3208	TEST.exe
3208	TEST.exe
3208	TEST.exe
3208	TEST.exe
3208	TEST.exe
3208	TEST.exe
3208	TEST.exe
3208	TEST.exe
3208	TEST.exe
3208	TEST.exe
3208	TEST.exe
3208	TEST.exe
3208	TEST.exe
3208	TEST.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3208	TEST.exe
Token: SeDebugPrivilege	3708	lmao.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3208 wrote to memory of 1440	3208	TEST.exe	90
PID 3208 wrote to memory of 1440	3208	TEST.exe	90
PID 3208 wrote to memory of 1440	3208	TEST.exe	90
PID 3208 wrote to memory of 3908	3208	TEST.exe	92
PID 3208 wrote to memory of 3908	3208	TEST.exe	92
PID 3208 wrote to memory of 3908	3208	TEST.exe	92
PID 3908 wrote to memory of 2652	3908	cmd.exe	94
PID 3908 wrote to memory of 2652	3908	cmd.exe	94
PID 3908 wrote to memory of 2652	3908	cmd.exe	94
PID 1440 wrote to memory of 4508	1440	cmd.exe	95
PID 1440 wrote to memory of 4508	1440	cmd.exe	95
PID 1440 wrote to memory of 4508	1440	cmd.exe	95
PID 3908 wrote to memory of 3708	3908	cmd.exe	96
PID 3908 wrote to memory of 3708	3908	cmd.exe	96
PID 3908 wrote to memory of 3708	3908	cmd.exe	96

C:\Users\Admin\AppData\Local\Temp\TEST.exe
"C:\Users\Admin\AppData\Local\Temp\TEST.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3208
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "lmao" /tr '"C:\Users\Admin\AppData\Roaming\lmao.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1440
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "lmao" /tr '"C:\Users\Admin\AppData\Roaming\lmao.exe"'
    3⤵
    - Creates scheduled task(s)
    PID:4508
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp6DBE.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3908
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2652
- - C:\Users\Admin\AppData\Roaming\lmao.exe
    "C:\Users\Admin\AppData\Roaming\lmao.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:3708

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

tmp6DBE.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp6DBE.tmp.bat
Size 148B
SHA256 17e05a8f53be8ee118d13932e9b25d74535baac62eedbbf803a8c511c74f88d3
MD5 cdb49dd1570115616c9a808798546099
SHA1 707c8a7e793c05a21d0ddbad8c66f85ab517047d
SHA512 9a6233888dbd5b1ddba5cd005e17ca832508e68137e87b0d64f29a97dc0ce3b4805b8ba11762121c9eb9ddfc5e8509f16b22176d9512cb98a22445210c39ee13
MD5 SHA1 SHA512

Submit Download

lmao.exe

Path C:\Users\Admin\AppData\Roaming\lmao.exe
Size 47KB
SHA256 c61b8136e5397b8ccecfb2b7603fc265b847b84e27634bf5c13d7e1a79c7f2ab
MD5 4cd151ec5304dce3ef3b1cab2206215e
SHA1 57ec7a79aee5d609e3531ad8a7d7200beb4595a3
SHA512 efb22e3eda9bf720c27a27044f37cd8ae290f8bca20f6c1bf6e65c54fefdceed3e73cd4de939a9ae5c6448a82faa7e6e5a8edebd84b202da7fad33f6a00cacf1
SSDEEP 768:xuMvdTHfEmGKWUc6vQmo2qsaPocAmU444PIwWWN0bilvnLDmdSzsTyDMNKOYqXBs:xuMvdTHfhy2KPo7xwWtbil/vmysx7RdO
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/3208-0-0x0000000000AA0000-0x0000000000AB2000-memory.dmp

Download

memory/3208-1-0x00000000750E0000-0x0000000075890000-memory.dmp

Download

memory/3208-2-0x00000000053A0000-0x00000000053B0000-memory.dmp

Download

memory/3208-3-0x0000000005770000-0x000000000580C000-memory.dmp

Download

memory/3208-9-0x00000000750E0000-0x0000000075890000-memory.dmp

Download

memory/3708-13-0x0000000075040000-0x00000000757F0000-memory.dmp

Download

memory/3708-14-0x00000000055D0000-0x00000000055E0000-memory.dmp

Download

memory/3708-15-0x0000000075040000-0x00000000757F0000-memory.dmp

Download

memory/3708-16-0x00000000055D0000-0x00000000055E0000-memory.dmp

Download