asyncrat | 40ba4a68575cda8b4da56ef2efae3f3c217bf7b78d68c29086e86d324d3ebffa

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
16/04/2024, 01:02

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General

Target
tmp.exe
Size 605KB
Sample240416-bds28sdb63
SHA256 40ba4a68575cda8b4da56ef2efae3f3c217bf7b78d68c29086e86d324d3ebffa
MD5 78f7efed48c531657b84cd66911c7eef
SHA1 eedcf0f081c78adfcefe3e9208bc83b252f1b4aa
SHA512 519a27a1d28e855d2b8c128f8723200ff7f790069f8087a2c6470e8437b12192a444a79ff4024cf278215db718391e770b783dc167ea321efbfc76e2411c26df
SSDEEP 12288:JvqsfIozrJqppjn1rmq12WaD+1Fri1xbcR:h9vrMjn1r5aCjg9cR
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

asyncrat quasar stormkitty default rat spyware stealer trojan

Malware Config

Extracted

Family

asyncrat

Botnet

Default

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

flow	ioc	pid	Process
12	ip-api.com		Process not Found
		2408	schtasks.exe
34	icanhazip.com		Process not Found

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

StormKitty payload 4 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023277-7.dat	family_stormkitty
behavioral2/memory/1004-29-0x0000000000080000-0x00000000000B2000-memory.dmp	family_stormkitty
behavioral2/memory/3788-42-0x00000000021C0000-0x00000000021D0000-memory.dmp	family_stormkitty
behavioral2/memory/3788-207-0x00000000021C0000-0x00000000021D0000-memory.dmp	family_stormkitty

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x0006000000023277-7.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-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	tmp.exe

Executes dropped EXE 3 IoCs

pid	Process
1004	Orifaaywu.exe
2676	Vqmqsfffubp.exe
3788	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

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\ee65ade1e4da7404e345e954aea816d0\Admin@DTKUTJRL_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	Orifaaywu.exe
File opened for modification	C:\Users\Admin\AppData\Local\ee65ade1e4da7404e345e954aea816d0\Admin@DTKUTJRL_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	Orifaaywu.exe
File created	C:\Users\Admin\AppData\Local\ee65ade1e4da7404e345e954aea816d0\Admin@DTKUTJRL_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	Orifaaywu.exe
File opened for modification	C:\Users\Admin\AppData\Local\ee65ade1e4da7404e345e954aea816d0\Admin@DTKUTJRL_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	Orifaaywu.exe
File created	C:\Users\Admin\AppData\Local\ee65ade1e4da7404e345e954aea816d0\Admin@DTKUTJRL_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	Orifaaywu.exe
File created	C:\Users\Admin\AppData\Local\ee65ade1e4da7404e345e954aea816d0\Admin@DTKUTJRL_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	Orifaaywu.exe
File created	C:\Users\Admin\AppData\Local\ee65ade1e4da7404e345e954aea816d0\Admin@DTKUTJRL_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini	Orifaaywu.exe
File created	C:\Users\Admin\AppData\Local\ee65ade1e4da7404e345e954aea816d0\Admin@DTKUTJRL_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved 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.

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

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

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

pid	Process
2408	schtasks.exe
1516	schtasks.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
1004	Orifaaywu.exe
1004	Orifaaywu.exe
1004	Orifaaywu.exe
1004	Orifaaywu.exe
1004	Orifaaywu.exe
1004	Orifaaywu.exe
1004	Orifaaywu.exe
1004	Orifaaywu.exe
1004	Orifaaywu.exe
1004	Orifaaywu.exe
1004	Orifaaywu.exe
1004	Orifaaywu.exe
1004	Orifaaywu.exe
1004	Orifaaywu.exe
1004	Orifaaywu.exe
1004	Orifaaywu.exe
1004	Orifaaywu.exe
1004	Orifaaywu.exe
1004	Orifaaywu.exe
1004	Orifaaywu.exe
1004	Orifaaywu.exe
1004	Orifaaywu.exe
1004	Orifaaywu.exe
1004	Orifaaywu.exe
1004	Orifaaywu.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1004	Orifaaywu.exe
Token: SeDebugPrivilege	2676	Vqmqsfffubp.exe
Token: SeDebugPrivilege	3788	Spotify.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3788	Spotify.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 3504 wrote to memory of 1004	3504	tmp.exe	87
PID 3504 wrote to memory of 1004	3504	tmp.exe	87
PID 3504 wrote to memory of 1004	3504	tmp.exe	87
PID 3504 wrote to memory of 2676	3504	tmp.exe	88
PID 3504 wrote to memory of 2676	3504	tmp.exe	88
PID 2676 wrote to memory of 2408	2676	Vqmqsfffubp.exe	92
PID 2676 wrote to memory of 2408	2676	Vqmqsfffubp.exe	92
PID 2676 wrote to memory of 3788	2676	Vqmqsfffubp.exe	94
PID 2676 wrote to memory of 3788	2676	Vqmqsfffubp.exe	94
PID 3788 wrote to memory of 1516	3788	Spotify.exe	95
PID 3788 wrote to memory of 1516	3788	Spotify.exe	95
PID 1004 wrote to memory of 3760	1004	Orifaaywu.exe	99
PID 1004 wrote to memory of 3760	1004	Orifaaywu.exe	99
PID 1004 wrote to memory of 3760	1004	Orifaaywu.exe	99
PID 3760 wrote to memory of 3876	3760	cmd.exe	101
PID 3760 wrote to memory of 3876	3760	cmd.exe	101
PID 3760 wrote to memory of 3876	3760	cmd.exe	101
PID 3760 wrote to memory of 4836	3760	cmd.exe	102
PID 3760 wrote to memory of 4836	3760	cmd.exe	102
PID 3760 wrote to memory of 4836	3760	cmd.exe	102
PID 3760 wrote to memory of 2640	3760	cmd.exe	103
PID 3760 wrote to memory of 2640	3760	cmd.exe	103
PID 3760 wrote to memory of 2640	3760	cmd.exe	103
PID 1004 wrote to memory of 1892	1004	Orifaaywu.exe	104
PID 1004 wrote to memory of 1892	1004	Orifaaywu.exe	104
PID 1004 wrote to memory of 1892	1004	Orifaaywu.exe	104
PID 1892 wrote to memory of 4532	1892	cmd.exe	106
PID 1892 wrote to memory of 4532	1892	cmd.exe	106
PID 1892 wrote to memory of 4532	1892	cmd.exe	106
PID 1892 wrote to memory of 3192	1892	cmd.exe	107
PID 1892 wrote to memory of 3192	1892	cmd.exe	107
PID 1892 wrote to memory of 3192	1892	cmd.exe	107

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⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3504
- 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:1004
- - C:\Windows\SysWOW64\cmd.exe
    "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3760
  - - C:\Windows\SysWOW64\chcp.com
      chcp 65001
      4⤵
      PID:3876
  - - C:\Windows\SysWOW64\netsh.exe
      netsh wlan show profile
      4⤵
      PID:4836
  - - C:\Windows\SysWOW64\findstr.exe
      findstr All
      4⤵
      PID:2640
- - C:\Windows\SysWOW64\cmd.exe
    "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1892
  - - C:\Windows\SysWOW64\chcp.com
      chcp 65001
      4⤵
      PID:4532
  - - C:\Windows\SysWOW64\netsh.exe
      netsh wlan show networks mode=bssid
      4⤵
      PID:3192
- 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:2676
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Spotify" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\Vqmqsfffubp.exe" /rl HIGHEST /f
    3⤵
    - Quasar RAT
    - Creates scheduled task(s)
    PID:2408
- - 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:3788
  - - 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:1516

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

Orifaaywu.exe

Path C:\Users\Admin\AppData\Local\Temp\Orifaaywu.exe
Size 175KB
SHA256 4ff2fde65efb563f5e895f398ed45ef76ae9284a31ffbe5f15494979fce2915a
MD5 03c26f9adbebd81f75300a22979d475e
SHA1 8d10f68a2ef94e2cd9fbb015bf7885a71d9709bd
SHA512 a4b7f2b13b869354cd8356b3469600a45b63462b3d3fda253f501af6ab47a2621c7b60601ec7f5fb85b2d46b383c25440fc994f8fa2023c1b4b80492dac21a90
SSDEEP 3072:Qe8p6ewdOIwQx76vK/bvTv0cU+lL/dMlZZUZ0b2gTZwARE+WpCc:E6ewwIwQJ6vKX0c5MlYZ0b22
MD5 SHA1 SHA512 SSDEEP

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Vqmqsfffubp.exe

Path C:\Users\Admin\AppData\Local\Temp\Vqmqsfffubp.exe
Size 341KB
SHA256 4d96f6d4fc4ae3a5f9d6a68870520c2a5c6909e19938ade289788b6e09d8888f
MD5 8d05530a8e54a9b42a448d04d25b34f5
SHA1 b51acdfbffbb325eb8d9011bd9d472fa9e4469c5
SHA512 ac7081bdb5ef75d04d05e8c1c0398dfe7bcea048d9aef7ffcf5d14435f40f391762684d1bf608f573be234c60ced9032857f3a35c91750329317627f5beac4ba
SSDEEP 6144:f4qPxYte/GsNuuTRnXqrpbmYJ6NKxMluG5oqpUeqMFn0d2kNXSrFdjPfV:fkU+Suoq5mo6NK6VdUeUQFd7V
MD5 SHA1 SHA512 SSDEEP

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msgid.dat

Path C:\Users\Admin\AppData\Local\b1423ae5f5c3d87c7f57f63c44b65174\msgid.dat
Size 1B
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99
MD5 SHA1 SHA512

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Bookmarks.txt

Path C:\Users\Admin\AppData\Local\ee65ade1e4da7404e345e954aea816d0\Admin@DTKUTJRL_en-US\Browsers\Firefox\Bookmarks.txt
Size 105B
SHA256 c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142
MD5 2e9d094dda5cdc3ce6519f75943a4ff4
SHA1 5d989b4ac8b699781681fe75ed9ef98191a5096c
SHA512 d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7
MD5 SHA1 SHA512

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Process.txt

Path C:\Users\Admin\AppData\Local\ee65ade1e4da7404e345e954aea816d0\Admin@DTKUTJRL_en-US\System\Process.txt
Size 4KB
SHA256 4d90fc26537793002ab35d37cade4ee781f3fdce73205f9926d3b7e2c60122c5
MD5 1985451051da2e9251e09e6fde513f98
SHA1 ddb7a49fc10eeca4ca0c4c186d2ae820aa7d1e52
SHA512 22cfb6dddfb5a8ada41e596a5acabfa08f377dcecfa9deab1a0163a3865c3342ad00a70f8fe98236251d86f5bdae1e8e4877f290c525c868499f18085d4bef98
SSDEEP 48:6GYPtKPat3IsDg+j9FM1yCgoPb1unI23a+eVyet9U:VYPtCat3ISgG9q1yCgWB8I23a+eVyA9U
MD5 SHA1 SHA512 SSDEEP

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memory/1004-199-0x00000000055B0000-0x00000000055BA000-memory.dmp

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memory/1004-44-0x0000000004920000-0x0000000004986000-memory.dmp

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memory/1004-198-0x00000000746C0000-0x0000000074E70000-memory.dmp

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memory/1004-194-0x0000000005AE0000-0x0000000006084000-memory.dmp

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memory/1004-29-0x0000000000080000-0x00000000000B2000-memory.dmp

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memory/1004-193-0x0000000005490000-0x0000000005522000-memory.dmp

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memory/1004-31-0x00000000746C0000-0x0000000074E70000-memory.dmp

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memory/1004-191-0x0000000004A40000-0x0000000004A50000-memory.dmp

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memory/1004-205-0x0000000004A40000-0x0000000004A50000-memory.dmp

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memory/1004-208-0x0000000004A40000-0x0000000004A50000-memory.dmp

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memory/2676-28-0x0000000000FF0000-0x0000000000FF8000-memory.dmp

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memory/2676-30-0x000000001BB40000-0x000000001BBDE000-memory.dmp

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memory/2676-27-0x00007FF9B9370000-0x00007FF9B9E31000-memory.dmp

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memory/2676-40-0x00007FF9B9370000-0x00007FF9B9E31000-memory.dmp

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memory/2676-34-0x000000001C820000-0x000000001C85C000-memory.dmp

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memory/2676-33-0x00000000030F0000-0x0000000003102000-memory.dmp

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memory/2676-32-0x0000000003090000-0x00000000030A0000-memory.dmp

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memory/3504-0-0x0000000000230000-0x00000000002CC000-memory.dmp

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memory/3504-26-0x00007FF9B9370000-0x00007FF9B9E31000-memory.dmp

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memory/3504-2-0x000000001B010000-0x000000001B020000-memory.dmp

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memory/3504-1-0x00007FF9B9370000-0x00007FF9B9E31000-memory.dmp

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memory/3788-42-0x00000000021C0000-0x00000000021D0000-memory.dmp

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memory/3788-41-0x00007FF9B9370000-0x00007FF9B9E31000-memory.dmp

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memory/3788-206-0x00007FF9B9370000-0x00007FF9B9E31000-memory.dmp

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memory/3788-207-0x00000000021C0000-0x00000000021D0000-memory.dmp

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