asyncrat | ee66a185008549b9ca0c687a78aa6a69e4770dd12cab9dc63d5346c1f570904b

Resubmissions

12/03/2025, 21:32

250312-1dmynatxey 10

11/03/2025, 16:10

250311-tmgdxaxnx4 10

06/03/2025, 02:30

250306-cze8yav1az 10

Analysis

max time kernel
886s
max time network
896s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
11/03/2025, 16:10

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

66b157a3d414b913b1a436edc71e8fc733c1f5457302fe9ca950a8b16d86b9e6.exe
Size

363KB
MD5

ddbbbb0895f1997339c1c388f853f65d
SHA1

d79b5cab17509a0aaeef232947a3992a20a706be
SHA256

66b157a3d414b913b1a436edc71e8fc733c1f5457302fe9ca950a8b16d86b9e6
SHA512

a3912b39b1efe5e56b970ba4e2a64bc76a36c1edfc1774ac3dc987e9f89fa6468ff26db69e58854a1b11e58bcaa64789a223fadc9f599649cb5cc08db936307a
SSDEEP

6144:/dua0sl91E4sxEMu7PyV+xEv7C8825EbpU5:/dua0slPEZyMujyV2Op8O4U5

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

iphy.strangled.net:1604

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
false
install_folder
%AppData%

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

resource	yara_rule
behavioral20/files/0x000400000001e100-8.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-1-5-21-2593460650-190333679-3676257533-1000\Control Panel\International\Geo\Nation	66b157a3d414b913b1a436edc71e8fc733c1f5457302fe9ca950a8b16d86b9e6.exe

Executes dropped EXE 16 IoCs

pid	Process
3164	AfraidDns_Async.exe
792	win10.exe
3264	win10.exe
3408	win10.exe
2364	win10.exe
952	win10.exe
988	win10.exe
4756	win10.exe
1604	win10.exe
4372	win10.exe
2436	win10.exe
180	win10.exe
1104	win10.exe
1548	win10.exe
472	win10.exe
2440	win10.exe

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

System Information Discovery
T1082

Program crash 15 IoCs

pid	pid_target	Process	procid_target
3024	792	WerFault.exe	96
2896	3264	WerFault.exe	106
2308	3408	WerFault.exe	109
1904	2364	WerFault.exe	112
5092	952	WerFault.exe	115
4592	988	WerFault.exe	118
1312	4756	WerFault.exe	121
3704	1604	WerFault.exe	124
5076	4372	WerFault.exe	127
3948	2436	WerFault.exe	130
3660	180	WerFault.exe	133
3024	1104	WerFault.exe	144
2520	1548	WerFault.exe	149
4788	472	WerFault.exe	152
1716	2440	WerFault.exe	159

System Location Discovery: System Language Discovery 1 TTPs 20 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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	win10.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	win10.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	win10.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	win10.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	win10.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	66b157a3d414b913b1a436edc71e8fc733c1f5457302fe9ca950a8b16d86b9e6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	win10.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	win10.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AfraidDns_Async.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	win10.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	win10.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	win10.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	win10.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	win10.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	win10.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	win10.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	win10.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

pid	Process
4032	schtasks.exe

Suspicious use of AdjustPrivilegeToken 17 IoCs

description	pid	Process
Token: SeDebugPrivilege	1640	66b157a3d414b913b1a436edc71e8fc733c1f5457302fe9ca950a8b16d86b9e6.exe
Token: SeDebugPrivilege	3164	AfraidDns_Async.exe
Token: SeDebugPrivilege	792	win10.exe
Token: SeDebugPrivilege	3264	win10.exe
Token: SeDebugPrivilege	3408	win10.exe
Token: SeDebugPrivilege	2364	win10.exe
Token: SeDebugPrivilege	952	win10.exe
Token: SeDebugPrivilege	988	win10.exe
Token: SeDebugPrivilege	4756	win10.exe
Token: SeDebugPrivilege	1604	win10.exe
Token: SeDebugPrivilege	4372	win10.exe
Token: SeDebugPrivilege	2436	win10.exe
Token: SeDebugPrivilege	180	win10.exe
Token: SeDebugPrivilege	1104	win10.exe
Token: SeDebugPrivilege	1548	win10.exe
Token: SeDebugPrivilege	472	win10.exe
Token: SeDebugPrivilege	2440	win10.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1640 wrote to memory of 3164	1640	66b157a3d414b913b1a436edc71e8fc733c1f5457302fe9ca950a8b16d86b9e6.exe	89
PID 1640 wrote to memory of 3164	1640	66b157a3d414b913b1a436edc71e8fc733c1f5457302fe9ca950a8b16d86b9e6.exe	89
PID 1640 wrote to memory of 3164	1640	66b157a3d414b913b1a436edc71e8fc733c1f5457302fe9ca950a8b16d86b9e6.exe	89
PID 1640 wrote to memory of 1808	1640	66b157a3d414b913b1a436edc71e8fc733c1f5457302fe9ca950a8b16d86b9e6.exe	90
PID 1640 wrote to memory of 1808	1640	66b157a3d414b913b1a436edc71e8fc733c1f5457302fe9ca950a8b16d86b9e6.exe	90
PID 1640 wrote to memory of 1808	1640	66b157a3d414b913b1a436edc71e8fc733c1f5457302fe9ca950a8b16d86b9e6.exe	90
PID 1808 wrote to memory of 4032	1808	cmd.exe	92
PID 1808 wrote to memory of 4032	1808	cmd.exe	92
PID 1808 wrote to memory of 4032	1808	cmd.exe	92
PID 1640 wrote to memory of 2416	1640	66b157a3d414b913b1a436edc71e8fc733c1f5457302fe9ca950a8b16d86b9e6.exe	93
PID 1640 wrote to memory of 2416	1640	66b157a3d414b913b1a436edc71e8fc733c1f5457302fe9ca950a8b16d86b9e6.exe	93
PID 1640 wrote to memory of 2416	1640	66b157a3d414b913b1a436edc71e8fc733c1f5457302fe9ca950a8b16d86b9e6.exe	93

C:\Users\Admin\AppData\Local\Temp\66b157a3d414b913b1a436edc71e8fc733c1f5457302fe9ca950a8b16d86b9e6.exe
"C:\Users\Admin\AppData\Local\Temp\66b157a3d414b913b1a436edc71e8fc733c1f5457302fe9ca950a8b16d86b9e6.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1640
- C:\Users\Admin\AppData\Local\Temp\AfraidDns_Async.exe
  "C:\Users\Admin\AppData\Local\Temp\AfraidDns_Async.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:3164
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Local\Temp\win10\win10.exe'" /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1808
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Local\Temp\win10\win10.exe'" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4032
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C copy "C:\Users\Admin\AppData\Local\Temp\66b157a3d414b913b1a436edc71e8fc733c1f5457302fe9ca950a8b16d86b9e6.exe" "C:\Users\Admin\AppData\Local\Temp\win10\win10.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2416

C:\Users\Admin\AppData\Local\Temp\win10\win10.exe
C:\Users\Admin\AppData\Local\Temp\win10\win10.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:792
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 792 -s 924
  2⤵
  - Program crash
  PID:3024

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 792 -ip 792
1⤵
PID:1128

C:\Users\Admin\AppData\Local\Temp\win10\win10.exe
C:\Users\Admin\AppData\Local\Temp\win10\win10.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3264
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3264 -s 856
  2⤵
  - Program crash
  PID:2896

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3264 -ip 3264
1⤵
PID:1644

C:\Users\Admin\AppData\Local\Temp\win10\win10.exe
C:\Users\Admin\AppData\Local\Temp\win10\win10.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3408
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3408 -s 860
  2⤵
  - Program crash
  PID:2308

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3408 -ip 3408
1⤵
PID:3784

C:\Users\Admin\AppData\Local\Temp\win10\win10.exe
C:\Users\Admin\AppData\Local\Temp\win10\win10.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2364
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2364 -s 860
  2⤵
  - Program crash
  PID:1904

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 2364 -ip 2364
1⤵
PID:2916

C:\Users\Admin\AppData\Local\Temp\win10\win10.exe
C:\Users\Admin\AppData\Local\Temp\win10\win10.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:952
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 952 -s 860
  2⤵
  - Program crash
  PID:5092

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 952 -ip 952
1⤵
PID:3672

C:\Users\Admin\AppData\Local\Temp\win10\win10.exe
C:\Users\Admin\AppData\Local\Temp\win10\win10.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:988
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 988 -s 840
  2⤵
  - Program crash
  PID:4592

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 988 -ip 988
1⤵
PID:2508

C:\Users\Admin\AppData\Local\Temp\win10\win10.exe
C:\Users\Admin\AppData\Local\Temp\win10\win10.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:4756
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4756 -s 860
  2⤵
  - Program crash
  PID:1312

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 4756 -ip 4756
1⤵
PID:3604

C:\Users\Admin\AppData\Local\Temp\win10\win10.exe
C:\Users\Admin\AppData\Local\Temp\win10\win10.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:1604
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1604 -s 856
  2⤵
  - Program crash
  PID:3704

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 1604 -ip 1604
1⤵
PID:336

C:\Users\Admin\AppData\Local\Temp\win10\win10.exe
C:\Users\Admin\AppData\Local\Temp\win10\win10.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:4372
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4372 -s 860
  2⤵
  - Program crash
  PID:5076

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4372 -ip 4372
1⤵
PID:3120

C:\Users\Admin\AppData\Local\Temp\win10\win10.exe
C:\Users\Admin\AppData\Local\Temp\win10\win10.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2436
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2436 -s 860
  2⤵
  - Program crash
  PID:3948

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 2436 -ip 2436
1⤵
PID:4708

C:\Users\Admin\AppData\Local\Temp\win10\win10.exe
C:\Users\Admin\AppData\Local\Temp\win10\win10.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:180
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 180 -s 856
  2⤵
  - Program crash
  PID:3660

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 180 -ip 180
1⤵
PID:3396

C:\Users\Admin\AppData\Local\Temp\win10\win10.exe
C:\Users\Admin\AppData\Local\Temp\win10\win10.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:1104
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1104 -s 820
  2⤵
  - Program crash
  PID:3024

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 1104 -ip 1104
1⤵
PID:1512

C:\Users\Admin\AppData\Local\Temp\win10\win10.exe
C:\Users\Admin\AppData\Local\Temp\win10\win10.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:1548
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1548 -s 900
  2⤵
  - Program crash
  PID:2520

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 1548 -ip 1548
1⤵
PID:880

C:\Users\Admin\AppData\Local\Temp\win10\win10.exe
C:\Users\Admin\AppData\Local\Temp\win10\win10.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:472
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 472 -s 860
  2⤵
  - Program crash
  PID:4788

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 472 -ip 472
1⤵
PID:528

C:\Users\Admin\AppData\Local\Temp\win10\win10.exe
C:\Users\Admin\AppData\Local\Temp\win10\win10.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2440
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2440 -s 856
  2⤵
  - Program crash
  PID:1716

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 2440 -ip 2440
1⤵
PID:4344

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\AfraidDns_Async.exe

Filesize
47KB

MD5
c1dcd0d286ad0121901f2c269c86d16b

SHA1
10acacc80588f73f5197adc0ea7cf1eadb49c793

SHA256
16d86733b11a9fd3ec2a732c2ca18c04c427d9fb9ddf1bdc14fe4109644854f9

SHA512
919dc181df55584c744d98344ae340ad2a844aed278570dc2729f430234e3ce7539bc9807a522c7b73d8e26c05cdf5a45851ba88688e7840b03e7ffb7c278618

Download Submit
C:\Users\Admin\AppData\Local\Temp\win10\win10.exe

Filesize
363KB

MD5
ddbbbb0895f1997339c1c388f853f65d

SHA1
d79b5cab17509a0aaeef232947a3992a20a706be

SHA256
66b157a3d414b913b1a436edc71e8fc733c1f5457302fe9ca950a8b16d86b9e6

SHA512
a3912b39b1efe5e56b970ba4e2a64bc76a36c1edfc1774ac3dc987e9f89fa6468ff26db69e58854a1b11e58bcaa64789a223fadc9f599649cb5cc08db936307a

Download Submit
memory/792-27-0x0000000000830000-0x0000000000890000-memory.dmp

Filesize
384KB

Download
memory/1640-1-0x0000000000610000-0x0000000000670000-memory.dmp

Filesize
384KB

Download
memory/1640-2-0x0000000005650000-0x0000000005BF4000-memory.dmp

Filesize
5.6MB

Download
memory/1640-3-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download
memory/1640-0-0x0000000074A5E000-0x0000000074A5F000-memory.dmp

Filesize
4KB

Download
memory/1640-20-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download
memory/3164-16-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download
memory/3164-22-0x0000000005190000-0x00000000051F6000-memory.dmp

Filesize
408KB

Download
memory/3164-23-0x0000000005640000-0x00000000056DC000-memory.dmp

Filesize
624KB

Download
memory/3164-24-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download
memory/3164-21-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download
memory/3164-15-0x0000000000950000-0x0000000000962000-memory.dmp

Filesize
72KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads