asyncrat | adb4d5bc0e359b762c9af262bcbaecd7effc14742631afdc650eb8b8feb54003

General

Target

a53466fc1c01a7fa4ac637e46c8ca0cd.exe
Size

596KB
MD5

a53466fc1c01a7fa4ac637e46c8ca0cd
SHA1

1fd22e354e8ca425a1de630bffb54e2d10435b62
SHA256

adb4d5bc0e359b762c9af262bcbaecd7effc14742631afdc650eb8b8feb54003
SHA512

756e67a0241671a1dd7b42f5c481be79fc5f07f7a24e22abc0629d575a6f34362d4ccd35a5f6d6d831830a60495b2f25e11b205d0adcb115c8b8131895af277d
SSDEEP

12288:PToPWBv/cpGrU3ywDwK7KvDJCbAvyDcdSCYZLYL6h:PTbBv5rUTwK78dChctYZLYL6h

Score

10^/10

asyncrat vidar 818 persistence rat spyware stealer

Malware Config

Extracted

Family

vidar

Version

2.2

Botnet

818

C2

https://t.me/litlebey

https://steamcommunity.com/profiles/76561199472399815

Attributes

profile_id
818

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat
Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar

Async RAT payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/2428-156-0x0000000000400000-0x0000000000422000-memory.dmp	asyncrat
behavioral2/memory/4652-162-0x0000000000DB0000-0x0000000000E26000-memory.dmp	asyncrat

Executes dropped EXE 3 IoCs

Processes:

scoresystem.exeWATCHT~2.EXE1717.exe

pid process

4088 scoresystem.exe
4544 WATCHT~2.EXE
4652 1717.exe

pid	process
4088	scoresystem.exe
4544	WATCHT~2.EXE
4652	1717.exe

Checks computer location settings 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

WATCHT~2.EXEa53466fc1c01a7fa4ac637e46c8ca0cd.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	WATCHT~2.EXE
Key value queried	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	a53466fc1c01a7fa4ac637e46c8ca0cd.exe

Loads dropped DLL 2 IoCs

Processes:

AppLaunch.exe

pid process

920 AppLaunch.exe
920 AppLaunch.exe
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064
Accesses 2FA software files, possible credential harvesting 2 TTPs
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081

pid	process
920	AppLaunch.exe
920	AppLaunch.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

scoresystem.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce	scoresystem.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\""	scoresystem.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

WATCHT~2.EXE1717.exe

description	pid	process	target process
PID 4544 set thread context of 920	4544	WATCHT~2.EXE	AppLaunch.exe
PID 4652 set thread context of 2428	4652	1717.exe	vbc.exe

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

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4752 4652 WerFault.exe 1717.exe

pid	pid_target	process	target process
4752	4652	WerFault.exe	1717.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

AppLaunch.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	AppLaunch.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	AppLaunch.exe

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1972 timeout.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

powershell.exeWATCHT~2.EXEAppLaunch.exe

pid process

1444 powershell.exe
1444 powershell.exe
4544 WATCHT~2.EXE
4544 WATCHT~2.EXE
920 AppLaunch.exe
920 AppLaunch.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

WATCHT~2.EXEpowershell.exevbc.exe

description pid process

Token: SeDebugPrivilege 4544 WATCHT~2.EXE
Token: SeDebugPrivilege 1444 powershell.exe
Token: SeDebugPrivilege 2428 vbc.exe

pid	process
1972	timeout.exe

pid	process
1444	powershell.exe
1444	powershell.exe
4544	WATCHT~2.EXE
4544	WATCHT~2.EXE
920	AppLaunch.exe
920	AppLaunch.exe

description	pid	process
Token: SeDebugPrivilege	4544	WATCHT~2.EXE
Token: SeDebugPrivilege	1444	powershell.exe
Token: SeDebugPrivilege	2428	vbc.exe

Suspicious use of WriteProcessMemory 34 IoCs

Processes:

a53466fc1c01a7fa4ac637e46c8ca0cd.exescoresystem.exeWATCHT~2.EXE1717.exeAppLaunch.execmd.exe

description	pid	process	target process
PID 4888 wrote to memory of 4088	4888	a53466fc1c01a7fa4ac637e46c8ca0cd.exe	scoresystem.exe
PID 4888 wrote to memory of 4088	4888	a53466fc1c01a7fa4ac637e46c8ca0cd.exe	scoresystem.exe
PID 4088 wrote to memory of 4544	4088	scoresystem.exe	WATCHT~2.EXE
PID 4088 wrote to memory of 4544	4088	scoresystem.exe	WATCHT~2.EXE
PID 4088 wrote to memory of 4544	4088	scoresystem.exe	WATCHT~2.EXE
PID 4544 wrote to memory of 1444	4544	WATCHT~2.EXE	powershell.exe
PID 4544 wrote to memory of 1444	4544	WATCHT~2.EXE	powershell.exe
PID 4544 wrote to memory of 1444	4544	WATCHT~2.EXE	powershell.exe
PID 4544 wrote to memory of 812	4544	WATCHT~2.EXE	AppLaunch.exe
PID 4544 wrote to memory of 812	4544	WATCHT~2.EXE	AppLaunch.exe
PID 4544 wrote to memory of 812	4544	WATCHT~2.EXE	AppLaunch.exe
PID 4544 wrote to memory of 920	4544	WATCHT~2.EXE	AppLaunch.exe
PID 4544 wrote to memory of 920	4544	WATCHT~2.EXE	AppLaunch.exe
PID 4544 wrote to memory of 920	4544	WATCHT~2.EXE	AppLaunch.exe
PID 4544 wrote to memory of 920	4544	WATCHT~2.EXE	AppLaunch.exe
PID 4544 wrote to memory of 920	4544	WATCHT~2.EXE	AppLaunch.exe
PID 4544 wrote to memory of 920	4544	WATCHT~2.EXE	AppLaunch.exe
PID 4544 wrote to memory of 920	4544	WATCHT~2.EXE	AppLaunch.exe
PID 4544 wrote to memory of 920	4544	WATCHT~2.EXE	AppLaunch.exe
PID 4544 wrote to memory of 920	4544	WATCHT~2.EXE	AppLaunch.exe
PID 4888 wrote to memory of 4652	4888	a53466fc1c01a7fa4ac637e46c8ca0cd.exe	1717.exe
PID 4888 wrote to memory of 4652	4888	a53466fc1c01a7fa4ac637e46c8ca0cd.exe	1717.exe
PID 4888 wrote to memory of 4652	4888	a53466fc1c01a7fa4ac637e46c8ca0cd.exe	1717.exe
PID 4652 wrote to memory of 2428	4652	1717.exe	vbc.exe
PID 4652 wrote to memory of 2428	4652	1717.exe	vbc.exe
PID 4652 wrote to memory of 2428	4652	1717.exe	vbc.exe
PID 4652 wrote to memory of 2428	4652	1717.exe	vbc.exe
PID 4652 wrote to memory of 2428	4652	1717.exe	vbc.exe
PID 920 wrote to memory of 4376	920	AppLaunch.exe	cmd.exe
PID 920 wrote to memory of 4376	920	AppLaunch.exe	cmd.exe
PID 920 wrote to memory of 4376	920	AppLaunch.exe	cmd.exe
PID 4376 wrote to memory of 1972	4376	cmd.exe	timeout.exe
PID 4376 wrote to memory of 1972	4376	cmd.exe	timeout.exe
PID 4376 wrote to memory of 1972	4376	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\a53466fc1c01a7fa4ac637e46c8ca0cd.exe
"C:\Users\Admin\AppData\Local\Temp\a53466fc1c01a7fa4ac637e46c8ca0cd.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4888

C:\Users\Admin\AppData\Local\Temp\RarSFX0\scoresystem.exe
"C:\Users\Admin\AppData\Local\Temp\RarSFX0\scoresystem.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4088

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\WATCHT~2.EXE
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\WATCHT~2.EXE
3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4544

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMwA1AA==
4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1444

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
4⤵
PID:812

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
4⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:920

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe" & exit
5⤵
- Suspicious use of WriteProcessMemory
PID:4376

C:\Windows\SysWOW64\timeout.exe
timeout /t 6
6⤵
- Delays execution with timeout.exe
PID:1972

C:\Users\Admin\AppData\Local\Temp\RarSFX0\1717.exe
"C:\Users\Admin\AppData\Local\Temp\RarSFX0\1717.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4652

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
3⤵
- Suspicious use of AdjustPrivilegeToken
PID:2428

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4652 -s 304
3⤵
- Program crash
PID:4752

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 4652 -ip 4652
1⤵
PID:4420

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Scripting

1

T1064

Modify Registry

1

T1112

Credential Access

Credentials in Files

2

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\ProgramData\mozglue.dll
Filesize
133KB

MD5
8f73c08a9660691143661bf7332c3c27

SHA1
37fa65dd737c50fda710fdbde89e51374d0c204a

SHA256
3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

SHA512
0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

Download Submit
C:\ProgramData\nss3.dll
Filesize
1.2MB

MD5
bfac4e3c5908856ba17d41edcd455a51

SHA1
8eec7e888767aa9e4cca8ff246eb2aacb9170428

SHA256
e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

SHA512
2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\WATCHT~2.EXE
Filesize
362.4MB

MD5
10155f7d28c09033e8064c23d8d753db

SHA1
42362a2d24e1e7bf7f97a2f5fb72a81306536bb6

SHA256
2f78ba61101b4ae38e44d1e0edad8b195bc801b4cd91c4c8881d547c7073c655

SHA512
a626aa9a6f605bdfcb5d0455e1db27022b16a368aaefc2b7842c7aa188221ad9efa78ea1a7d915c0513e6ac3db564d2777601f1c7921864cacd793be6b81bd41

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\WATCHT~2.EXE
Filesize
362.4MB

MD5
10155f7d28c09033e8064c23d8d753db

SHA1
42362a2d24e1e7bf7f97a2f5fb72a81306536bb6

SHA256
2f78ba61101b4ae38e44d1e0edad8b195bc801b4cd91c4c8881d547c7073c655

SHA512
a626aa9a6f605bdfcb5d0455e1db27022b16a368aaefc2b7842c7aa188221ad9efa78ea1a7d915c0513e6ac3db564d2777601f1c7921864cacd793be6b81bd41

Download Submit
C:\Users\Admin\AppData\Local\Temp\RarSFX0\1717.exe
Filesize
457KB

MD5
66e815946cfe9ffe0027ebf4db30fda9

SHA1
a0edd0ab8909ac842ec77573497fe7f40401beb8

SHA256
21314404c10b04494713bd805fff8d42fc63513b5a4c434b4826a41c9b556c22

SHA512
94335b7fb0c2952df4fbae0fa630f3ec5612783866d86d468f5b4429ba1c2617939ebeed7c54c8ebe2db9fa1f837e929974e646211ff8ce7e35c505c33679660

Download Submit
C:\Users\Admin\AppData\Local\Temp\RarSFX0\1717.exe
Filesize
457KB

MD5
66e815946cfe9ffe0027ebf4db30fda9

SHA1
a0edd0ab8909ac842ec77573497fe7f40401beb8

SHA256
21314404c10b04494713bd805fff8d42fc63513b5a4c434b4826a41c9b556c22

SHA512
94335b7fb0c2952df4fbae0fa630f3ec5612783866d86d468f5b4429ba1c2617939ebeed7c54c8ebe2db9fa1f837e929974e646211ff8ce7e35c505c33679660

Download Submit
C:\Users\Admin\AppData\Local\Temp\RarSFX0\scoresystem.exe
Filesize
630KB

MD5
de39a7b5729cecc97244042f6eb858f7

SHA1
be4b03f12f9a81a2cbf6c782c66d230e609e0424

SHA256
f2e08945074adcc47885bd4f848112b9605238d0cc00db1e686bc567b408e687

SHA512
e01266297515b23e6f25cfd379c6c611f3ea94a58d239b0f3cd5254c4de503a2ee7ca0b150b14da6b7c81954c15025e57ce88bd796d1d150832f51a69b57c0f8

Download Submit
memory/812-147-0x0000000000000000-mapping.dmp

Download
memory/920-164-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/920-148-0x0000000000000000-mapping.dmp

Download
memory/920-189-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/920-150-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/920-167-0x0000000060900000-0x0000000060992000-memory.dmp

Filesize
584KB

Download
memory/920-151-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/920-149-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/1444-144-0x00000000068C0000-0x00000000068DE000-memory.dmp

Filesize
120KB

Download
memory/1444-140-0x0000000003280000-0x00000000032B6000-memory.dmp

Filesize
216KB

Download
memory/1444-146-0x0000000006DD0000-0x0000000006DEA000-memory.dmp

Filesize
104KB

Download
memory/1444-145-0x00000000080F0000-0x000000000876A000-memory.dmp

Filesize
6.5MB

Download
memory/1444-143-0x00000000061C0000-0x0000000006226000-memory.dmp

Filesize
408KB

Download
memory/1444-139-0x0000000000000000-mapping.dmp

Download
memory/1444-142-0x0000000006050000-0x00000000060B6000-memory.dmp

Filesize
408KB

Download
memory/1444-141-0x0000000005920000-0x0000000005F48000-memory.dmp

Filesize
6.2MB

Download
memory/1972-190-0x0000000000000000-mapping.dmp

Download
memory/2428-155-0x0000000000000000-mapping.dmp

Download
memory/2428-161-0x0000000002E20000-0x0000000002E32000-memory.dmp

Filesize
72KB

Download
memory/2428-163-0x0000000005C20000-0x0000000005C5C000-memory.dmp

Filesize
240KB

Download
memory/2428-165-0x0000000006000000-0x000000000609C000-memory.dmp

Filesize
624KB

Download
memory/2428-166-0x0000000006650000-0x0000000006BF4000-memory.dmp

Filesize
5.6MB

Download
memory/2428-156-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4088-132-0x0000000000000000-mapping.dmp

Download
memory/4376-188-0x0000000000000000-mapping.dmp

Download
memory/4544-137-0x0000000000DB0000-0x0000000000DBA000-memory.dmp

Filesize
40KB

Download
memory/4544-134-0x0000000000000000-mapping.dmp

Download
memory/4544-138-0x0000000006590000-0x00000000065B2000-memory.dmp

Filesize
136KB

Download
memory/4652-162-0x0000000000DB0000-0x0000000000E26000-memory.dmp

Filesize
472KB

Download
memory/4652-152-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads