asyncrat | 40ba4a68575cda8b4da56ef2efae3f3c217bf7b78d68c29086e86d324d3ebffa

General

Target

tmp.exe
Size

605KB
MD5

78f7efed48c531657b84cd66911c7eef
SHA1

eedcf0f081c78adfcefe3e9208bc83b252f1b4aa
SHA256

40ba4a68575cda8b4da56ef2efae3f3c217bf7b78d68c29086e86d324d3ebffa
SHA512

519a27a1d28e855d2b8c128f8723200ff7f790069f8087a2c6470e8437b12192a444a79ff4024cf278215db718391e770b783dc167ea321efbfc76e2411c26df
SSDEEP

12288:JvqsfIozrJqppjn1rmq12WaD+1Fri1xbcR:h9vrMjn1r5aCjg9cR

Score

10^/10

asyncrat quasar stormkitty default rat spyware stealer trojan

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

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

Quasar RAT 3 IoCs

Quasar is an open source Remote Access Tool.

trojan spyware quasar

Processes:

tmp.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1132431369-515282257-1998160155-1000\Control Panel\International\Geo\Nation	tmp.exe
12	ip-api.com
34	icanhazip.com

StormKitty
StormKitty is an open source info stealer written in C#.
stealer stormkitty

StormKitty payload 2 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\Orifaaywu.exe	family_stormkitty
behavioral2/memory/4020-29-0x0000000000B30000-0x0000000000B62000-memory.dmp	family_stormkitty

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\Orifaaywu.exe	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:

tmp.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1132431369-515282257-1998160155-1000\Control Panel\International\Geo\Nation tmp.exe
Executes dropped EXE 3 IoCs

Processes:

Orifaaywu.exeVqmqsfffubp.exeSpotify.exe

pid process

4020 Orifaaywu.exe
2860 Vqmqsfffubp.exe
348 Spotify.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Drops desktop.ini file(s) 8 IoCs

Processes:

Orifaaywu.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Local\de0dd87641f7e151a9ac08a17d7071c6\Admin@AVZCVZMZ_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini	Orifaaywu.exe
File created	C:\Users\Admin\AppData\Local\de0dd87641f7e151a9ac08a17d7071c6\Admin@AVZCVZMZ_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini	Orifaaywu.exe
File created	C:\Users\Admin\AppData\Local\de0dd87641f7e151a9ac08a17d7071c6\Admin@AVZCVZMZ_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	Orifaaywu.exe
File created	C:\Users\Admin\AppData\Local\de0dd87641f7e151a9ac08a17d7071c6\Admin@AVZCVZMZ_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	Orifaaywu.exe
File opened for modification	C:\Users\Admin\AppData\Local\de0dd87641f7e151a9ac08a17d7071c6\Admin@AVZCVZMZ_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	Orifaaywu.exe
File opened for modification	C:\Users\Admin\AppData\Local\de0dd87641f7e151a9ac08a17d7071c6\Admin@AVZCVZMZ_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	Orifaaywu.exe
File created	C:\Users\Admin\AppData\Local\de0dd87641f7e151a9ac08a17d7071c6\Admin@AVZCVZMZ_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	Orifaaywu.exe
File created	C:\Users\Admin\AppData\Local\de0dd87641f7e151a9ac08a17d7071c6\Admin@AVZCVZMZ_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	Orifaaywu.exe

Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

12 ip-api.com
34 icanhazip.com
Looks up geolocation information via web service
Uses a legitimate geolocation service to find the infected system's geolocation info.
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

flow	ioc
12	ip-api.com
34	icanhazip.com

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:

Orifaaywu.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	Orifaaywu.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	Orifaaywu.exe

Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exeschtasks.exe

pid process

1696 schtasks.exe
4552 schtasks.exe

pid	process
1696	schtasks.exe
4552	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

Processes:

Orifaaywu.exe

pid	process
4020	Orifaaywu.exe
4020	Orifaaywu.exe
4020	Orifaaywu.exe
4020	Orifaaywu.exe
4020	Orifaaywu.exe
4020	Orifaaywu.exe
4020	Orifaaywu.exe
4020	Orifaaywu.exe
4020	Orifaaywu.exe
4020	Orifaaywu.exe
4020	Orifaaywu.exe
4020	Orifaaywu.exe
4020	Orifaaywu.exe
4020	Orifaaywu.exe
4020	Orifaaywu.exe
4020	Orifaaywu.exe
4020	Orifaaywu.exe
4020	Orifaaywu.exe
4020	Orifaaywu.exe
4020	Orifaaywu.exe
4020	Orifaaywu.exe
4020	Orifaaywu.exe
4020	Orifaaywu.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

Orifaaywu.exeVqmqsfffubp.exeSpotify.exe

description pid process

Token: SeDebugPrivilege 4020 Orifaaywu.exe
Token: SeDebugPrivilege 2860 Vqmqsfffubp.exe
Token: SeDebugPrivilege 348 Spotify.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Spotify.exe

pid process

348 Spotify.exe

description	pid	process
Token: SeDebugPrivilege	4020	Orifaaywu.exe
Token: SeDebugPrivilege	2860	Vqmqsfffubp.exe
Token: SeDebugPrivilege	348	Spotify.exe

pid	process
348	Spotify.exe

Suspicious use of WriteProcessMemory 32 IoCs

Processes:

tmp.exeVqmqsfffubp.exeSpotify.exeOrifaaywu.execmd.execmd.exe

description	pid	process	target process
PID 1788 wrote to memory of 4020	1788	tmp.exe	Orifaaywu.exe
PID 1788 wrote to memory of 4020	1788	tmp.exe	Orifaaywu.exe
PID 1788 wrote to memory of 4020	1788	tmp.exe	Orifaaywu.exe
PID 1788 wrote to memory of 2860	1788	tmp.exe	Vqmqsfffubp.exe
PID 1788 wrote to memory of 2860	1788	tmp.exe	Vqmqsfffubp.exe
PID 2860 wrote to memory of 1696	2860	Vqmqsfffubp.exe	schtasks.exe
PID 2860 wrote to memory of 1696	2860	Vqmqsfffubp.exe	schtasks.exe
PID 2860 wrote to memory of 348	2860	Vqmqsfffubp.exe	Spotify.exe
PID 2860 wrote to memory of 348	2860	Vqmqsfffubp.exe	Spotify.exe
PID 348 wrote to memory of 4552	348	Spotify.exe	schtasks.exe
PID 348 wrote to memory of 4552	348	Spotify.exe	schtasks.exe
PID 4020 wrote to memory of 4012	4020	Orifaaywu.exe	cmd.exe
PID 4020 wrote to memory of 4012	4020	Orifaaywu.exe	cmd.exe
PID 4020 wrote to memory of 4012	4020	Orifaaywu.exe	cmd.exe
PID 4012 wrote to memory of 3960	4012	cmd.exe	chcp.com
PID 4012 wrote to memory of 3960	4012	cmd.exe	chcp.com
PID 4012 wrote to memory of 3960	4012	cmd.exe	chcp.com
PID 4012 wrote to memory of 916	4012	cmd.exe	netsh.exe
PID 4012 wrote to memory of 916	4012	cmd.exe	netsh.exe
PID 4012 wrote to memory of 916	4012	cmd.exe	netsh.exe
PID 4012 wrote to memory of 3560	4012	cmd.exe	findstr.exe
PID 4012 wrote to memory of 3560	4012	cmd.exe	findstr.exe
PID 4012 wrote to memory of 3560	4012	cmd.exe	findstr.exe
PID 4020 wrote to memory of 3252	4020	Orifaaywu.exe	cmd.exe
PID 4020 wrote to memory of 3252	4020	Orifaaywu.exe	cmd.exe
PID 4020 wrote to memory of 3252	4020	Orifaaywu.exe	cmd.exe
PID 3252 wrote to memory of 4420	3252	cmd.exe	chcp.com
PID 3252 wrote to memory of 4420	3252	cmd.exe	chcp.com
PID 3252 wrote to memory of 4420	3252	cmd.exe	chcp.com
PID 3252 wrote to memory of 4668	3252	cmd.exe	netsh.exe
PID 3252 wrote to memory of 4668	3252	cmd.exe	netsh.exe
PID 3252 wrote to memory of 4668	3252	cmd.exe	netsh.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
1⤵
- Quasar RAT
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1788

C:\Users\Admin\AppData\Local\Temp\Orifaaywu.exe
"C:\Users\Admin\AppData\Local\Temp\Orifaaywu.exe"
2⤵
- Executes dropped EXE
- Drops desktop.ini file(s)
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4020

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
3⤵
- Suspicious use of WriteProcessMemory
PID:4012

C:\Windows\SysWOW64\chcp.com
chcp 65001
4⤵
PID:3960

C:\Windows\SysWOW64\netsh.exe
netsh wlan show profile
4⤵
PID:916

C:\Windows\SysWOW64\findstr.exe
findstr All
4⤵
PID:3560

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
3⤵
- Suspicious use of WriteProcessMemory
PID:3252

C:\Windows\SysWOW64\chcp.com
chcp 65001
4⤵
PID:4420

C:\Windows\SysWOW64\netsh.exe
netsh wlan show networks mode=bssid
4⤵
PID:4668

C:\Users\Admin\AppData\Local\Temp\Vqmqsfffubp.exe
"C:\Users\Admin\AppData\Local\Temp\Vqmqsfffubp.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2860

C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Spotify" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\Vqmqsfffubp.exe" /rl HIGHEST /f
3⤵
- Creates scheduled task(s)
PID:1696

C:\Users\Admin\AppData\Roaming\SpotifyClient\Spotify.exe
"C:\Users\Admin\AppData\Roaming\SpotifyClient\Spotify.exe"
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:348

C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Spotify" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SpotifyClient\Spotify.exe" /rl HIGHEST /f
4⤵
- Creates scheduled task(s)
PID:4552

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

3

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\Orifaaywu.exe
Filesize
175KB

MD5
03c26f9adbebd81f75300a22979d475e

SHA1
8d10f68a2ef94e2cd9fbb015bf7885a71d9709bd

SHA256
4ff2fde65efb563f5e895f398ed45ef76ae9284a31ffbe5f15494979fce2915a

SHA512
a4b7f2b13b869354cd8356b3469600a45b63462b3d3fda253f501af6ab47a2621c7b60601ec7f5fb85b2d46b383c25440fc994f8fa2023c1b4b80492dac21a90

Download Submit
C:\Users\Admin\AppData\Local\Temp\Vqmqsfffubp.exe
Filesize
341KB

MD5
8d05530a8e54a9b42a448d04d25b34f5

SHA1
b51acdfbffbb325eb8d9011bd9d472fa9e4469c5

SHA256
4d96f6d4fc4ae3a5f9d6a68870520c2a5c6909e19938ade289788b6e09d8888f

SHA512
ac7081bdb5ef75d04d05e8c1c0398dfe7bcea048d9aef7ffcf5d14435f40f391762684d1bf608f573be234c60ced9032857f3a35c91750329317627f5beac4ba

Download Submit
C:\Users\Admin\AppData\Local\de0dd87641f7e151a9ac08a17d7071c6\Admin@AVZCVZMZ_en-US\Browsers\Firefox\Bookmarks.txt
Filesize
105B

MD5
2e9d094dda5cdc3ce6519f75943a4ff4

SHA1
5d989b4ac8b699781681fe75ed9ef98191a5096c

SHA256
c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

SHA512
d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

Download Submit
C:\Users\Admin\AppData\Local\de0dd87641f7e151a9ac08a17d7071c6\Admin@AVZCVZMZ_en-US\System\Process.txt
Filesize
4KB

MD5
7a8bd12aad7f5264e87c4ecd96e86735

SHA1
617f015fa860413603987839e6210385d6778c2a

SHA256
c26148736fb951f3ef88e5ab545f158e2178754c17278cf205794443bc5ee1f5

SHA512
c6156041cf878fa375bbb4ca064a8525e3c6d46c7f6765890ebdcccf5da5fba3b7a1984640e93da8ced4033b3c07ae4043260f74cb5d21e179df4499bc12b189

Download Submit
C:\Users\Admin\AppData\Local\de0dd87641f7e151a9ac08a17d7071c6\msgid.dat
Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/348-207-0x0000000003130000-0x0000000003140000-memory.dmp

Filesize
64KB

Download
memory/348-206-0x00007FFA05160000-0x00007FFA05C21000-memory.dmp

Filesize
10.8MB

Download
memory/348-43-0x0000000003130000-0x0000000003140000-memory.dmp

Filesize
64KB

Download
memory/348-42-0x00007FFA05160000-0x00007FFA05C21000-memory.dmp

Filesize
10.8MB

Download
memory/1788-2-0x000000001BDE0000-0x000000001BDF0000-memory.dmp

Filesize
64KB

Download
memory/1788-27-0x00007FFA05160000-0x00007FFA05C21000-memory.dmp

Filesize
10.8MB

Download
memory/1788-0-0x0000000000DE0000-0x0000000000E7C000-memory.dmp

Filesize
624KB

Download
memory/1788-1-0x00007FFA05160000-0x00007FFA05C21000-memory.dmp

Filesize
10.8MB

Download
memory/2860-35-0x000000001AD70000-0x000000001ADAC000-memory.dmp

Filesize
240KB

Download
memory/2860-34-0x0000000000B30000-0x0000000000B42000-memory.dmp

Filesize
72KB

Download
memory/2860-41-0x00007FFA05160000-0x00007FFA05C21000-memory.dmp

Filesize
10.8MB

Download
memory/2860-28-0x0000000000210000-0x0000000000218000-memory.dmp

Filesize
32KB

Download
memory/2860-32-0x000000001AEF0000-0x000000001AF00000-memory.dmp

Filesize
64KB

Download
memory/2860-26-0x00007FFA05160000-0x00007FFA05C21000-memory.dmp

Filesize
10.8MB

Download
memory/2860-30-0x000000001ADD0000-0x000000001AE6E000-memory.dmp

Filesize
632KB

Download
memory/4020-193-0x0000000005F40000-0x0000000005FD2000-memory.dmp

Filesize
584KB

Download
memory/4020-191-0x00000000053D0000-0x00000000053E0000-memory.dmp

Filesize
64KB

Download
memory/4020-31-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/4020-194-0x0000000006590000-0x0000000006B34000-memory.dmp

Filesize
5.6MB

Download
memory/4020-198-0x0000000006060000-0x000000000606A000-memory.dmp

Filesize
40KB

Download
memory/4020-199-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/4020-29-0x0000000000B30000-0x0000000000B62000-memory.dmp

Filesize
200KB

Download
memory/4020-205-0x00000000053D0000-0x00000000053E0000-memory.dmp

Filesize
64KB

Download
memory/4020-45-0x00000000053E0000-0x0000000005446000-memory.dmp

Filesize
408KB

Download
memory/4020-33-0x00000000053D0000-0x00000000053E0000-memory.dmp

Filesize
64KB

Download
memory/4020-208-0x00000000053D0000-0x00000000053E0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

Loading Replay Monitor...

Downloads