asyncrat | fbb41333d4ca06cace9a9d040cc9c2a95a644a03298da9789def5f48e34f5515

Analysis

max time kernel
300s
max time network
299s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
17-07-2024 18:49

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General

Target

Ujuax.exe
Size

4.8MB
MD5

cc0586b98c46e5ed73efb1b0e9181130
SHA1

ff4a38d4acb50e4385727ef5455b77344b9b01c6
SHA256

b32f304e47735f05127ca24f7094514ef8b2b6d4d23c2b34a519ada6dc93b628
SHA512

2a8e5c1f6a449abe949b7e1fab291a1919bb80859648fd2bad50cf46964a3292db7f63663a4aa9f62993f3f85fb1e14fd05dfc68f9632e25f19a59bdf9e22468
SSDEEP

24576:D0cxDzNN+hJELofuY4e9fB03aZTtjck/aCbycRZxE7EiMdwTBHPJArTJnC03Ud1E:4cnk

Score

10^/10

asyncrat scar rat spyware stealer

Malware Config

Extracted

Family

asyncrat

Version

AWS | 3Losh

Botnet

Scar

scar77747.duckdns.org:6606

scar77747.duckdns.org:7707

scar77747.duckdns.org:8808

Mutex

Alx_alx

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

Async RAT payload 2 IoCs

rat

resource	yara_rule
behavioral3/memory/2264-4902-0x00000000053E0000-0x00000000053F6000-memory.dmp	family_asyncrat
behavioral3/memory/544-9836-0x0000000005C10000-0x0000000005C26000-memory.dmp	family_asyncrat

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1750093773-264148664-1320403265-1000\Control Panel\International\Geo\Nation	Ujuax.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1750093773-264148664-1320403265-1000\Control Panel\International\Geo\Nation	Scar.exe

Executes dropped EXE 2 IoCs

pid	Process
544	Scar.exe
3784	Scar.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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Gathers network information 2 TTPs 2 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
400	ipconfig.exe
3056	ipconfig.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3044	powershell.exe
3044	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2264	Ujuax.exe
Token: SeDebugPrivilege	2264	Ujuax.exe
Token: SeDebugPrivilege	3044	powershell.exe
Token: SeDebugPrivilege	544	Scar.exe
Token: SeDebugPrivilege	544	Scar.exe
Token: SeDebugPrivilege	3784	Scar.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2264 wrote to memory of 1184	2264	Ujuax.exe	90
PID 2264 wrote to memory of 1184	2264	Ujuax.exe	90
PID 2264 wrote to memory of 1184	2264	Ujuax.exe	90
PID 1184 wrote to memory of 400	1184	cmd.exe	92
PID 1184 wrote to memory of 400	1184	cmd.exe	92
PID 1184 wrote to memory of 400	1184	cmd.exe	92
PID 2264 wrote to memory of 3044	2264	Ujuax.exe	102
PID 2264 wrote to memory of 3044	2264	Ujuax.exe	102
PID 2264 wrote to memory of 3044	2264	Ujuax.exe	102
PID 544 wrote to memory of 4032	544	Scar.exe	118
PID 544 wrote to memory of 4032	544	Scar.exe	118
PID 544 wrote to memory of 4032	544	Scar.exe	118
PID 4032 wrote to memory of 3056	4032	cmd.exe	120
PID 4032 wrote to memory of 3056	4032	cmd.exe	120
PID 4032 wrote to memory of 3056	4032	cmd.exe	120

C:\Users\Admin\AppData\Local\Temp\Ujuax.exe
"C:\Users\Admin\AppData\Local\Temp\Ujuax.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2264
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c ipconfig /release
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1184
- - C:\Windows\SysWOW64\ipconfig.exe
    ipconfig /release
    3⤵
    - Gathers network information
    PID:400
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc QQBkAGQALQBNAHAAUAByAGUAZgBlAHIAZQBuAGMAZQAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEMAOgBcAFUAcwBlAHIAcwBcAEEAZABtAGkAbgBcAEEAcABwAEQAYQB0AGEAXABMAG8AYwBhAGwAXABUAGUAbQBwAFwAVQBqAHUAYQB4AC4AZQB4AGUAOwAgAEEAZABkAC0ATQBwAFAAcgBlAGYAZQByAGUAbgBjAGUAIAAtAEUAeABjAGwAdQBzAGkAbwBuAFAAcgBvAGMAZQBzAHMAIABVAGoAdQBhAHgALgBlAHgAZQA7AEEAZABkAC0ATQBwAFAAcgBlAGYAZQByAGUAbgBjAGUAIAAtAEUAeABjAGwAdQBzAGkAbwBuAFAAYQB0AGgAIABDADoAXABVAHMAZQByAHMAXABBAGQAbQBpAG4AXABBAHAAcABEAGEAdABhAFwAUgBvAGEAbQBpAG4AZwBcAFMAYwBhAHIALgBlAHgAZQA7ACAAQQBkAGQALQBNAHAAUAByAGUAZgBlAHIAZQBuAGMAZQAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUAByAG8AYwBlAHMAcwAgAFMAYwBhAHIALgBlAHgAZQA=
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3044

C:\Users\Admin\AppData\Roaming\Scar.exe
C:\Users\Admin\AppData\Roaming\Scar.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:544
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c ipconfig /release
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4032
- - C:\Windows\SysWOW64\ipconfig.exe
    ipconfig /release
    3⤵
    - Gathers network information
    PID:3056

C:\Users\Admin\AppData\Roaming\Scar.exe
C:\Users\Admin\AppData\Roaming\Scar.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3784

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Privilege Escalation

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Scar.exe.log

Filesize
805B

MD5
58a9108e39c2ea50e65c23be3a9407cf

SHA1
fb21f7b9330aa1a77080a3243b81b49035102d7b

SHA256
6049be83020702896a539b5c8c13270add224d7b91b3ee0bebc328791b74a84b

SHA512
93804ee8a4560503e47c07f5fa4a959e23355a01aba406c103d339debc9b2b1d20a345cdbb8d8069dac97b9151f228cf559ac3dde1500e3484fba1a4126842bf

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mtinhrut.op2.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\Scar.exe

Filesize
4.8MB

MD5
cc0586b98c46e5ed73efb1b0e9181130

SHA1
ff4a38d4acb50e4385727ef5455b77344b9b01c6

SHA256
b32f304e47735f05127ca24f7094514ef8b2b6d4d23c2b34a519ada6dc93b628

SHA512
2a8e5c1f6a449abe949b7e1fab291a1919bb80859648fd2bad50cf46964a3292db7f63663a4aa9f62993f3f85fb1e14fd05dfc68f9632e25f19a59bdf9e22468

Download Submit
memory/544-9836-0x0000000005C10000-0x0000000005C26000-memory.dmp

Filesize
88KB

Download
memory/2264-32-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-0-0x0000000074E8E000-0x0000000074E8F000-memory.dmp

Filesize
4KB

Download
memory/2264-3-0x0000000006D00000-0x00000000072A4000-memory.dmp

Filesize
5.6MB

Download
memory/2264-4-0x00000000067F0000-0x0000000006882000-memory.dmp

Filesize
584KB

Download
memory/2264-24-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-18-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-12-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-5-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-34-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-28-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-22-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-20-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-16-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-14-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-10-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-8-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-6-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-44-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-68-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-66-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-64-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-58-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-56-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-54-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-62-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-60-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-52-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-50-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-48-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-46-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-42-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-40-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-38-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-36-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-1-0x0000000000470000-0x0000000000938000-memory.dmp

Filesize
4.8MB

Download
memory/2264-30-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-4891-0x0000000074E80000-0x0000000075630000-memory.dmp

Filesize
7.7MB

Download
memory/2264-2-0x0000000006530000-0x0000000006754000-memory.dmp

Filesize
2.1MB

Download
memory/2264-26-0x0000000006530000-0x000000000674D000-memory.dmp

Filesize
2.1MB

Download
memory/2264-4893-0x0000000006A70000-0x0000000006ACE000-memory.dmp

Filesize
376KB

Download
memory/2264-4894-0x0000000006AD0000-0x0000000006B1C000-memory.dmp

Filesize
304KB

Download
memory/2264-4895-0x0000000074E8E000-0x0000000074E8F000-memory.dmp

Filesize
4KB

Download
memory/2264-4896-0x0000000074E80000-0x0000000075630000-memory.dmp

Filesize
7.7MB

Download
memory/2264-4897-0x0000000005300000-0x0000000005354000-memory.dmp

Filesize
336KB

Download
memory/2264-4902-0x00000000053E0000-0x00000000053F6000-memory.dmp

Filesize
88KB

Download
memory/2264-4947-0x00000000080F0000-0x000000000818C000-memory.dmp

Filesize
624KB

Download
memory/2264-4892-0x0000000074E80000-0x0000000075630000-memory.dmp

Filesize
7.7MB

Download
memory/3044-4942-0x0000000007290000-0x00000000072AA000-memory.dmp

Filesize
104KB

Download
memory/3044-4921-0x00000000702F0000-0x000000007033C000-memory.dmp

Filesize
304KB

Download
memory/3044-4900-0x0000000074E80000-0x0000000075630000-memory.dmp

Filesize
7.7MB

Download
memory/3044-4904-0x0000000074E80000-0x0000000075630000-memory.dmp

Filesize
7.7MB

Download
memory/3044-4905-0x0000000004C60000-0x0000000004C82000-memory.dmp

Filesize
136KB

Download
memory/3044-4912-0x0000000004D70000-0x0000000004DD6000-memory.dmp

Filesize
408KB

Download
memory/3044-4911-0x0000000004D00000-0x0000000004D66000-memory.dmp

Filesize
408KB

Download
memory/3044-4898-0x0000000002650000-0x0000000002686000-memory.dmp

Filesize
216KB

Download
memory/3044-4918-0x0000000005C30000-0x0000000005C4E000-memory.dmp

Filesize
120KB

Download
memory/3044-4919-0x0000000005C50000-0x0000000005C9C000-memory.dmp

Filesize
304KB

Download
memory/3044-4920-0x0000000006E10000-0x0000000006E42000-memory.dmp

Filesize
200KB

Download
memory/3044-4946-0x0000000074E80000-0x0000000075630000-memory.dmp

Filesize
7.7MB

Download
memory/3044-4903-0x0000000074E80000-0x0000000075630000-memory.dmp

Filesize
7.7MB

Download
memory/3044-4899-0x0000000004E30000-0x0000000005458000-memory.dmp

Filesize
6.2MB

Download
memory/3044-4940-0x0000000007190000-0x000000000719E000-memory.dmp

Filesize
56KB

Download
memory/3044-4931-0x00000000061B0000-0x00000000061CE000-memory.dmp

Filesize
120KB

Download
memory/3044-4935-0x0000000007590000-0x0000000007C0A000-memory.dmp

Filesize
6.5MB

Download
memory/3044-4933-0x0000000006E50000-0x0000000006EF3000-memory.dmp

Filesize
652KB

Download
memory/3044-4937-0x0000000006FC0000-0x0000000006FCA000-memory.dmp

Filesize
40KB

Download
memory/3044-4938-0x00000000071D0000-0x0000000007266000-memory.dmp

Filesize
600KB

Download
memory/3044-4939-0x0000000007150000-0x0000000007161000-memory.dmp

Filesize
68KB

Download
memory/3044-4932-0x0000000074E80000-0x0000000075630000-memory.dmp

Filesize
7.7MB

Download
memory/3044-4941-0x00000000071A0000-0x00000000071B4000-memory.dmp

Filesize
80KB

Download
memory/3044-4917-0x00000000054E0000-0x0000000005834000-memory.dmp

Filesize
3.3MB

Download
memory/3044-4934-0x0000000074E80000-0x0000000075630000-memory.dmp

Filesize
7.7MB

Download
memory/3044-4943-0x0000000007270000-0x0000000007278000-memory.dmp

Filesize
32KB

Download
memory/3044-4936-0x0000000006F50000-0x0000000006F6A000-memory.dmp

Filesize
104KB

Download