asyncrat | 3e33e49c97e0b18132a77fe2b7933990e9b61ab1a41480f8ea87e5dd0d4dd821

General

Target

hilolxdbyelol.exe
Size

223KB
MD5

d026bbe5264359555b00c027717712d5
SHA1

5c76e3a0a7f60a4bb5e10b2ef0a763588af5cb39
SHA256

3e33e49c97e0b18132a77fe2b7933990e9b61ab1a41480f8ea87e5dd0d4dd821
SHA512

f15660f28ebdd5bf803128756c679a7a546fb1de8fc76487335ac968ab40d3dd09c9eaa157831d00410efe2dee9f019fca10ee09e2a64173ebe3aa77d3cf2fc0
SSDEEP

3072:xuWrToqZ2dsaWwSpw25bC7DwNGANhBF+3qMIwHeeeez8wkvg5FbAzsCibeiKe17x:xuWj8dsUuw25bhNtwsgccSIx

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

Mutex

w3wyv5F2c8ka

Attributes

delay
3
install
true
install_file
hilolxdbyelol.exe
install_folder
%AppData%
pastebin_config
https://pastebin.com/raw/s14cUU5G

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral2/files/0x000700000001e58c-12.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

Processes:

hilolxdbyelol.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	hilolxdbyelol.exe

Executes dropped EXE 1 IoCs

Processes:

hilolxdbyelol.exe

pid	Process
812	hilolxdbyelol.exe

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

Web Service

T1102

Processes:

flow	ioc
24	pastebin.com
25	pastebin.com

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

cmd.execmd.exetimeout.exeschtasks.exehilolxdbyelol.exehilolxdbyelol.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hilolxdbyelol.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hilolxdbyelol.exe

Delays execution with timeout.exe 1 IoCs

evasion

Processes:

timeout.exe

pid	Process
3556	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

Processes:

schtasks.exe

pid	Process
4852	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

Processes:

hilolxdbyelol.exe

pid	Process
540	hilolxdbyelol.exe
540	hilolxdbyelol.exe
540	hilolxdbyelol.exe
540	hilolxdbyelol.exe
540	hilolxdbyelol.exe
540	hilolxdbyelol.exe
540	hilolxdbyelol.exe
540	hilolxdbyelol.exe
540	hilolxdbyelol.exe
540	hilolxdbyelol.exe
540	hilolxdbyelol.exe
540	hilolxdbyelol.exe
540	hilolxdbyelol.exe
540	hilolxdbyelol.exe
540	hilolxdbyelol.exe
540	hilolxdbyelol.exe
540	hilolxdbyelol.exe
540	hilolxdbyelol.exe
540	hilolxdbyelol.exe
540	hilolxdbyelol.exe
540	hilolxdbyelol.exe
540	hilolxdbyelol.exe
540	hilolxdbyelol.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

hilolxdbyelol.exehilolxdbyelol.exe

description	pid	Process
Token: SeDebugPrivilege	540	hilolxdbyelol.exe
Token: SeDebugPrivilege	812	hilolxdbyelol.exe
Token: SeDebugPrivilege	812	hilolxdbyelol.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

hilolxdbyelol.execmd.execmd.exe

description	pid	Process	procid_target
PID 540 wrote to memory of 2564	540	hilolxdbyelol.exe	92
PID 540 wrote to memory of 2564	540	hilolxdbyelol.exe	92
PID 540 wrote to memory of 2564	540	hilolxdbyelol.exe	92
PID 540 wrote to memory of 3228	540	hilolxdbyelol.exe	94
PID 540 wrote to memory of 3228	540	hilolxdbyelol.exe	94
PID 540 wrote to memory of 3228	540	hilolxdbyelol.exe	94
PID 3228 wrote to memory of 3556	3228	cmd.exe	97
PID 3228 wrote to memory of 3556	3228	cmd.exe	97
PID 3228 wrote to memory of 3556	3228	cmd.exe	97
PID 2564 wrote to memory of 4852	2564	cmd.exe	96
PID 2564 wrote to memory of 4852	2564	cmd.exe	96
PID 2564 wrote to memory of 4852	2564	cmd.exe	96
PID 3228 wrote to memory of 812	3228	cmd.exe	102
PID 3228 wrote to memory of 812	3228	cmd.exe	102
PID 3228 wrote to memory of 812	3228	cmd.exe	102

C:\Users\Admin\AppData\Local\Temp\hilolxdbyelol.exe
"C:\Users\Admin\AppData\Local\Temp\hilolxdbyelol.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:540
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "hilolxdbyelol" /tr '"C:\Users\Admin\AppData\Roaming\hilolxdbyelol.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2564
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "hilolxdbyelol" /tr '"C:\Users\Admin\AppData\Roaming\hilolxdbyelol.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4852
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpDE5A.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3228
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:3556
- - C:\Users\Admin\AppData\Roaming\hilolxdbyelol.exe
    "C:\Users\Admin\AppData\Roaming\hilolxdbyelol.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:812

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\hilolxdbyelol.exe.log

Filesize
614B

MD5
54920f388010333559bdff225040761d

SHA1
040972bf1fc83014f10c45832322c094f883ce30

SHA256
9ed5449a36700939987209c7a2974b9cc669b8b22c7c4e7936f35dda0a4dc359

SHA512
e17aa5d1328b3bfd3754d15b3c2eded98653d90c7b326f941522e0b3bd6f557880246a6bc69047facb42eb97d2e0ed6c46148dfe95a98669fc4e1d07c21a285c

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpDE5A.tmp.bat

Filesize
157B

MD5
45ddc720c250e7821254fa86de220fd8

SHA1
8a972c83ccb6ae7a2c9e3c04e3558c1025f24bcb

SHA256
e99ee034e4e16e6f47d0153670ff1e736f1211bf9ac653eeded1e7d82cd531ab

SHA512
d52e926e7eeeed2f262e05173af36cedb72d85adb78700abffa4c8733896b2b509cf6bdf4d0b17893595ca15acbecfa51f6d6ce2fc5bf162b51834570f7f7669

Download Submit
C:\Users\Admin\AppData\Roaming\hilolxdbyelol.exe

Filesize
223KB

MD5
d026bbe5264359555b00c027717712d5

SHA1
5c76e3a0a7f60a4bb5e10b2ef0a763588af5cb39

SHA256
3e33e49c97e0b18132a77fe2b7933990e9b61ab1a41480f8ea87e5dd0d4dd821

SHA512
f15660f28ebdd5bf803128756c679a7a546fb1de8fc76487335ac968ab40d3dd09c9eaa157831d00410efe2dee9f019fca10ee09e2a64173ebe3aa77d3cf2fc0

Download Submit
memory/540-0-0x0000000074A6E000-0x0000000074A6F000-memory.dmp

Filesize
4KB

Download
memory/540-1-0x0000000000C90000-0x0000000000CCE000-memory.dmp

Filesize
248KB

Download
memory/540-2-0x0000000074A60000-0x0000000075210000-memory.dmp

Filesize
7.7MB

Download
memory/540-3-0x0000000005640000-0x00000000056A6000-memory.dmp

Filesize
408KB

Download
memory/540-4-0x0000000005B10000-0x0000000005BAC000-memory.dmp

Filesize
624KB

Download
memory/540-9-0x0000000074A60000-0x0000000075210000-memory.dmp

Filesize
7.7MB

Download
memory/812-15-0x00000000749B0000-0x0000000075160000-memory.dmp

Filesize
7.7MB

Download
memory/812-16-0x00000000749B0000-0x0000000075160000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads