asyncrat | 920ee4d6e16da14af70de3df554004024590cd31ac4b57c5338761b7838b3291

Resubmissions

02/02/2024, 15:59

240202-te4t8scbdp 10

02/02/2024, 15:54

240202-tcesbscahk 10

Analysis

max time kernel
149s
max time network
144s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
02/02/2024, 15:59

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General

Target

SMS sender 2023/SMS sender 2023/SMS sender 2023.exe
Size

226KB
MD5

24dd26630b048cde008c05f926175a9b
SHA1

0b96f1ebd9b1be405c6e69aecb266089cd406ea7
SHA256

dba3b96b00b793eeccc62c2f973034a8813e6449f76a4dfdc9a2b0c38936b32f
SHA512

a869a5a768577552ed5fdd0f1957462d743254ec48ee75f6cfbd36a570c41e1b7c4f0f59eed5e6300ba100a958f4c883aa72d631e4b56a51596d395269c58eeb
SSDEEP

3072:N+STW8djpN6izj8mZw2g7uB1NUbBYp2TCnazbZHPzpq/Vp+8E89Fk6+Wp0:S8XN6W8mm2bnUbK2qazbZHl+F

Score

10^/10

asyncrat stormkitty default rat spyware stealer

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

StormKitty payload 2 IoCs

resource	yara_rule
behavioral15/memory/2636-0-0x0000000000A60000-0x0000000000A9E000-memory.dmp	family_stormkitty
behavioral15/memory/2636-160-0x0000000000550000-0x0000000000590000-memory.dmp	family_stormkitty

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) 7 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\508b144df2a933c331f4f9c6de20937f\Admin@AILVMYUM_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	SMS sender 2023.exe
File opened for modification	C:\Users\Admin\AppData\Local\508b144df2a933c331f4f9c6de20937f\Admin@AILVMYUM_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	SMS sender 2023.exe
File opened for modification	C:\Users\Admin\AppData\Local\508b144df2a933c331f4f9c6de20937f\Admin@AILVMYUM_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	SMS sender 2023.exe
File created	C:\Users\Admin\AppData\Local\508b144df2a933c331f4f9c6de20937f\Admin@AILVMYUM_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	SMS sender 2023.exe
File opened for modification	C:\Users\Admin\AppData\Local\508b144df2a933c331f4f9c6de20937f\Admin@AILVMYUM_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	SMS sender 2023.exe
File created	C:\Users\Admin\AppData\Local\508b144df2a933c331f4f9c6de20937f\Admin@AILVMYUM_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	SMS sender 2023.exe
File created	C:\Users\Admin\AppData\Local\508b144df2a933c331f4f9c6de20937f\Admin@AILVMYUM_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	SMS sender 2023.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	icanhazip.com

Looks up geolocation information via web service
Uses a legitimate geolocation service to find the infected system's geolocation info.

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 opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	SMS sender 2023.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	SMS sender 2023.exe

Modifies system certificate store 2 TTPs 4 IoCs

evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8\Blob = 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	SMS sender 2023.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13	SMS sender 2023.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 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	SMS sender 2023.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8	SMS sender 2023.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2636	SMS sender 2023.exe
2636	SMS sender 2023.exe
2636	SMS sender 2023.exe
2636	SMS sender 2023.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2636	SMS sender 2023.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2636 wrote to memory of 3012	2636	SMS sender 2023.exe	29
PID 2636 wrote to memory of 3012	2636	SMS sender 2023.exe	29
PID 2636 wrote to memory of 3012	2636	SMS sender 2023.exe	29
PID 2636 wrote to memory of 3012	2636	SMS sender 2023.exe	29
PID 3012 wrote to memory of 2804	3012	cmd.exe	31
PID 3012 wrote to memory of 2804	3012	cmd.exe	31
PID 3012 wrote to memory of 2804	3012	cmd.exe	31
PID 3012 wrote to memory of 2804	3012	cmd.exe	31
PID 3012 wrote to memory of 2952	3012	cmd.exe	32
PID 3012 wrote to memory of 2952	3012	cmd.exe	32
PID 3012 wrote to memory of 2952	3012	cmd.exe	32
PID 3012 wrote to memory of 2952	3012	cmd.exe	32
PID 3012 wrote to memory of 2612	3012	cmd.exe	33
PID 3012 wrote to memory of 2612	3012	cmd.exe	33
PID 3012 wrote to memory of 2612	3012	cmd.exe	33
PID 3012 wrote to memory of 2612	3012	cmd.exe	33
PID 2636 wrote to memory of 1952	2636	SMS sender 2023.exe	34
PID 2636 wrote to memory of 1952	2636	SMS sender 2023.exe	34
PID 2636 wrote to memory of 1952	2636	SMS sender 2023.exe	34
PID 2636 wrote to memory of 1952	2636	SMS sender 2023.exe	34
PID 1952 wrote to memory of 1012	1952	cmd.exe	36
PID 1952 wrote to memory of 1012	1952	cmd.exe	36
PID 1952 wrote to memory of 1012	1952	cmd.exe	36
PID 1952 wrote to memory of 1012	1952	cmd.exe	36
PID 1952 wrote to memory of 1908	1952	cmd.exe	37
PID 1952 wrote to memory of 1908	1952	cmd.exe	37
PID 1952 wrote to memory of 1908	1952	cmd.exe	37
PID 1952 wrote to memory of 1908	1952	cmd.exe	37

C:\Users\Admin\AppData\Local\Temp\SMS sender 2023\SMS sender 2023\SMS sender 2023.exe
"C:\Users\Admin\AppData\Local\Temp\SMS sender 2023\SMS sender 2023\SMS sender 2023.exe"
1⤵
- Drops desktop.ini file(s)
- Checks processor information in registry
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2636
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3012
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:2804
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show profile
    3⤵
    PID:2952
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    PID:2612
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1952
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:1012
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show networks mode=bssid
    3⤵
    PID:1908

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Subvert Trust Controls

T1553

Install Root Certificate

T1553.004

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\508b144df2a933c331f4f9c6de20937f\Admin@AILVMYUM_en-US\Browsers\Firefox\Bookmarks.txt

Filesize
105B

MD5
2e9d094dda5cdc3ce6519f75943a4ff4

SHA1
5d989b4ac8b699781681fe75ed9ef98191a5096c

SHA256
c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

SHA512
d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

Download Submit
C:\Users\Admin\AppData\Local\5cd2c394942dd972d1f27412a9e04ee1\msgid.dat

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab9CE4.tmp

Filesize
65KB

MD5
ac05d27423a85adc1622c714f2cb6184

SHA1
b0fe2b1abddb97837ea0195be70ab2ff14d43198

SHA256
c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

SHA512
6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar9D64.tmp

Filesize
171KB

MD5
9c0c641c06238516f27941aa1166d427

SHA1
64cd549fb8cf014fcd9312aa7a5b023847b6c977

SHA256
4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

SHA512
936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

Download Submit
memory/2636-0-0x0000000000A60000-0x0000000000A9E000-memory.dmp

Filesize
248KB

Download
memory/2636-1-0x00000000740B0000-0x000000007479E000-memory.dmp

Filesize
6.9MB

Download
memory/2636-2-0x0000000000550000-0x0000000000590000-memory.dmp

Filesize
256KB

Download
memory/2636-69-0x0000000000550000-0x0000000000590000-memory.dmp

Filesize
256KB

Download
memory/2636-159-0x00000000740B0000-0x000000007479E000-memory.dmp

Filesize
6.9MB

Download
memory/2636-160-0x0000000000550000-0x0000000000590000-memory.dmp

Filesize
256KB

Download
memory/2636-161-0x0000000000550000-0x0000000000590000-memory.dmp

Filesize
256KB

Download