asyncrat | e91997ede0af6498cdec211340fc59fcb814a9bbaf47115149d1e17126b8088a

General

Target

25a499f71d8652bf3f9800057412e31e.exe
Size

2.7MB
MD5

25a499f71d8652bf3f9800057412e31e
SHA1

b74b638471e2dafec4d98d3e790920be500b3318
SHA256

e91997ede0af6498cdec211340fc59fcb814a9bbaf47115149d1e17126b8088a
SHA512

4911f395a3d2f296344dcd5869c65b3ad9e10bb749a9e0cb6cd4ff96ee643555a8c0a99258cc4123ba81dc1ec969d2caf3b2152eb123a34bbc8bfbeaa5ee0b0a
SSDEEP

24576:c4abEjzQIEjzQIEjzQIEjzQIEjzQIEjzQIEjzQIEjzQIEjzQ9EjzQIEjzQ911EjR:YccccccccxcZ/cccc1goPBy

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.6D

Botnet

Default

C2

milla.publicvm.com:6606

milla.publicvm.com:7707

milla.publicvm.com:8808

Mutex

hzizmtfuyizxxugkf

Attributes

delay
8
install
true
install_file
mincrafte.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/memory/1208-7-0x0000000007170000-0x0000000007182000-memory.dmp	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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	25a499f71d8652bf3f9800057412e31e.exe

Executes dropped EXE 1 IoCs

pid	Process
1896	mincrafte.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
1020	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4012	timeout.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
1208	25a499f71d8652bf3f9800057412e31e.exe
1208	25a499f71d8652bf3f9800057412e31e.exe
1208	25a499f71d8652bf3f9800057412e31e.exe
1208	25a499f71d8652bf3f9800057412e31e.exe
1208	25a499f71d8652bf3f9800057412e31e.exe
1208	25a499f71d8652bf3f9800057412e31e.exe
1208	25a499f71d8652bf3f9800057412e31e.exe
1208	25a499f71d8652bf3f9800057412e31e.exe
1208	25a499f71d8652bf3f9800057412e31e.exe
1208	25a499f71d8652bf3f9800057412e31e.exe
1208	25a499f71d8652bf3f9800057412e31e.exe
1208	25a499f71d8652bf3f9800057412e31e.exe
1208	25a499f71d8652bf3f9800057412e31e.exe
1208	25a499f71d8652bf3f9800057412e31e.exe
1208	25a499f71d8652bf3f9800057412e31e.exe
1208	25a499f71d8652bf3f9800057412e31e.exe
1208	25a499f71d8652bf3f9800057412e31e.exe
1208	25a499f71d8652bf3f9800057412e31e.exe
1208	25a499f71d8652bf3f9800057412e31e.exe
1208	25a499f71d8652bf3f9800057412e31e.exe
1208	25a499f71d8652bf3f9800057412e31e.exe
1208	25a499f71d8652bf3f9800057412e31e.exe
1208	25a499f71d8652bf3f9800057412e31e.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1208	25a499f71d8652bf3f9800057412e31e.exe
Token: SeDebugPrivilege	1896	mincrafte.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1208 wrote to memory of 3236	1208	25a499f71d8652bf3f9800057412e31e.exe	102
PID 1208 wrote to memory of 3236	1208	25a499f71d8652bf3f9800057412e31e.exe	102
PID 1208 wrote to memory of 3236	1208	25a499f71d8652bf3f9800057412e31e.exe	102
PID 1208 wrote to memory of 1992	1208	25a499f71d8652bf3f9800057412e31e.exe	109
PID 1208 wrote to memory of 1992	1208	25a499f71d8652bf3f9800057412e31e.exe	109
PID 1208 wrote to memory of 1992	1208	25a499f71d8652bf3f9800057412e31e.exe	109
PID 3236 wrote to memory of 1020	3236	cmd.exe	97
PID 3236 wrote to memory of 1020	3236	cmd.exe	97
PID 3236 wrote to memory of 1020	3236	cmd.exe	97
PID 1992 wrote to memory of 4012	1992	DllHost.exe	99
PID 1992 wrote to memory of 4012	1992	DllHost.exe	99
PID 1992 wrote to memory of 4012	1992	DllHost.exe	99
PID 1992 wrote to memory of 1896	1992	DllHost.exe	104
PID 1992 wrote to memory of 1896	1992	DllHost.exe	104
PID 1992 wrote to memory of 1896	1992	DllHost.exe	104

C:\Users\Admin\AppData\Local\Temp\25a499f71d8652bf3f9800057412e31e.exe
"C:\Users\Admin\AppData\Local\Temp\25a499f71d8652bf3f9800057412e31e.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1208
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp6571.tmp.bat""
  2⤵
  PID:1992
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:4012
- - C:\Users\Admin\AppData\Roaming\mincrafte.exe
    "C:\Users\Admin\AppData\Roaming\mincrafte.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:1896
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /ru system /rl highest /tn 25a499f71d8652bf3f9800057412e31e /tr '"C:\Users\Admin\AppData\Roaming\mincrafte.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3236

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /ru system /rl highest /tn 25a499f71d8652bf3f9800057412e31e /tr '"C:\Users\Admin\AppData\Roaming\mincrafte.exe"'
1⤵
- Creates scheduled task(s)
PID:1020

C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{AB8902B4-09CA-4BB6-B78D-A8F59079A8D5}
1⤵
- Suspicious use of WriteProcessMemory
PID:1992

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp6571.tmp.bat

Filesize
153B

MD5
b58da26c1270d0ba3931cd06836a7f88

SHA1
fc7d6251aa4e6ca157e38c7db18f3eb01bd00d7c

SHA256
8f728897008b57bff7e8f7f25ede5a4cc7a0d4cdc5fb209fbf4548488ba75ca0

SHA512
2aac654514d8d2d5ce25ef25bec310fd64838daa558b013de39bfad54fd34462e78db682e78f8a6f97801eba46d8a2bfe3a6819b1646f2bb0faba97e2b07dbbf

Download Submit
memory/1208-7-0x0000000007170000-0x0000000007182000-memory.dmp

Filesize
72KB

Download
memory/1208-3-0x0000000006120000-0x00000000066C4000-memory.dmp

Filesize
5.6MB

Download
memory/1208-4-0x0000000005B70000-0x0000000005C02000-memory.dmp

Filesize
584KB

Download
memory/1208-5-0x00000000059E0000-0x00000000059F0000-memory.dmp

Filesize
64KB

Download
memory/1208-0-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/1208-1-0x0000000000D90000-0x000000000103E000-memory.dmp

Filesize
2.7MB

Download
memory/1208-6-0x0000000007060000-0x000000000706A000-memory.dmp

Filesize
40KB

Download
memory/1208-2-0x0000000005AD0000-0x0000000005B6C000-memory.dmp

Filesize
624KB

Download
memory/1208-12-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/1896-17-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/1896-18-0x0000000005460000-0x0000000005470000-memory.dmp

Filesize
64KB

Download
memory/1896-19-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/1896-20-0x0000000005460000-0x0000000005470000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads