remcos | 436cf5e6015bb698449e308b6cb6071e4404eeb29bb830ad28cd1442740f5c29

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220721-en
resource tags

arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
submitted
11/08/2022, 10:47

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General

Target
e7aec3c0721b775a5483aa1891d13f50.exe
Size 1.2MB
Sample220811-mvhtdagee4
SHA256 436cf5e6015bb698449e308b6cb6071e4404eeb29bb830ad28cd1442740f5c29
MD5 e7aec3c0721b775a5483aa1891d13f50
SHA1 2e6ec64bd9e99eaa468b769f89fe107efdb1868d
SHA512 67f4ab6801eaaf47892247b72410841412f1d458d5bfc202dce595ba8c57276926f599dc1433f27827ffd6ecc82fb4bd76c791eef6934e1d827e04a7919f7b38
MD5 SHA1 SHA512

Score

10^/10

remcos remotehost collection rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

mail.deiomino.icu:45547

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-93Q5F4
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/836-145-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 2 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/4748-147-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/4748-148-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 4 IoCs

resource	yara_rule
behavioral2/memory/836-145-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft
behavioral2/memory/4616-146-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4748-147-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4748-148-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

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
T1081

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2372564722-193526734-2636556182-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	e7aec3c0721b775a5483aa1891d13f50.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 4156 set thread context of 3288	4156	e7aec3c0721b775a5483aa1891d13f50.exe	95
PID 3288 set thread context of 4748	3288	e7aec3c0721b775a5483aa1891d13f50.exe	96
PID 3288 set thread context of 836	3288	e7aec3c0721b775a5483aa1891d13f50.exe	98
PID 3288 set thread context of 4616	3288	e7aec3c0721b775a5483aa1891d13f50.exe	99

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4748	e7aec3c0721b775a5483aa1891d13f50.exe
4748	e7aec3c0721b775a5483aa1891d13f50.exe
4616	e7aec3c0721b775a5483aa1891d13f50.exe
4616	e7aec3c0721b775a5483aa1891d13f50.exe
4748	e7aec3c0721b775a5483aa1891d13f50.exe
4748	e7aec3c0721b775a5483aa1891d13f50.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
3288	e7aec3c0721b775a5483aa1891d13f50.exe
3288	e7aec3c0721b775a5483aa1891d13f50.exe
3288	e7aec3c0721b775a5483aa1891d13f50.exe
3288	e7aec3c0721b775a5483aa1891d13f50.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4616	e7aec3c0721b775a5483aa1891d13f50.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3288	e7aec3c0721b775a5483aa1891d13f50.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 4156 wrote to memory of 3288	4156	e7aec3c0721b775a5483aa1891d13f50.exe	95
PID 4156 wrote to memory of 3288	4156	e7aec3c0721b775a5483aa1891d13f50.exe	95
PID 4156 wrote to memory of 3288	4156	e7aec3c0721b775a5483aa1891d13f50.exe	95
PID 4156 wrote to memory of 3288	4156	e7aec3c0721b775a5483aa1891d13f50.exe	95
PID 4156 wrote to memory of 3288	4156	e7aec3c0721b775a5483aa1891d13f50.exe	95
PID 4156 wrote to memory of 3288	4156	e7aec3c0721b775a5483aa1891d13f50.exe	95
PID 4156 wrote to memory of 3288	4156	e7aec3c0721b775a5483aa1891d13f50.exe	95
PID 4156 wrote to memory of 3288	4156	e7aec3c0721b775a5483aa1891d13f50.exe	95
PID 4156 wrote to memory of 3288	4156	e7aec3c0721b775a5483aa1891d13f50.exe	95
PID 4156 wrote to memory of 3288	4156	e7aec3c0721b775a5483aa1891d13f50.exe	95
PID 4156 wrote to memory of 3288	4156	e7aec3c0721b775a5483aa1891d13f50.exe	95
PID 4156 wrote to memory of 3288	4156	e7aec3c0721b775a5483aa1891d13f50.exe	95
PID 3288 wrote to memory of 4748	3288	e7aec3c0721b775a5483aa1891d13f50.exe	96
PID 3288 wrote to memory of 4748	3288	e7aec3c0721b775a5483aa1891d13f50.exe	96
PID 3288 wrote to memory of 4748	3288	e7aec3c0721b775a5483aa1891d13f50.exe	96
PID 3288 wrote to memory of 4748	3288	e7aec3c0721b775a5483aa1891d13f50.exe	96
PID 3288 wrote to memory of 4724	3288	e7aec3c0721b775a5483aa1891d13f50.exe	97
PID 3288 wrote to memory of 4724	3288	e7aec3c0721b775a5483aa1891d13f50.exe	97
PID 3288 wrote to memory of 4724	3288	e7aec3c0721b775a5483aa1891d13f50.exe	97
PID 3288 wrote to memory of 836	3288	e7aec3c0721b775a5483aa1891d13f50.exe	98
PID 3288 wrote to memory of 836	3288	e7aec3c0721b775a5483aa1891d13f50.exe	98
PID 3288 wrote to memory of 836	3288	e7aec3c0721b775a5483aa1891d13f50.exe	98
PID 3288 wrote to memory of 836	3288	e7aec3c0721b775a5483aa1891d13f50.exe	98
PID 3288 wrote to memory of 4616	3288	e7aec3c0721b775a5483aa1891d13f50.exe	99
PID 3288 wrote to memory of 4616	3288	e7aec3c0721b775a5483aa1891d13f50.exe	99
PID 3288 wrote to memory of 4616	3288	e7aec3c0721b775a5483aa1891d13f50.exe	99
PID 3288 wrote to memory of 4616	3288	e7aec3c0721b775a5483aa1891d13f50.exe	99

C:\Users\Admin\AppData\Local\Temp\e7aec3c0721b775a5483aa1891d13f50.exe
"C:\Users\Admin\AppData\Local\Temp\e7aec3c0721b775a5483aa1891d13f50.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4156
- C:\Users\Admin\AppData\Local\Temp\e7aec3c0721b775a5483aa1891d13f50.exe
  "C:\Users\Admin\AppData\Local\Temp\e7aec3c0721b775a5483aa1891d13f50.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3288
- - C:\Users\Admin\AppData\Local\Temp\e7aec3c0721b775a5483aa1891d13f50.exe
    C:\Users\Admin\AppData\Local\Temp\e7aec3c0721b775a5483aa1891d13f50.exe /stext "C:\Users\Admin\AppData\Local\Temp\bwsvltbw"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:4748
- - C:\Users\Admin\AppData\Local\Temp\e7aec3c0721b775a5483aa1891d13f50.exe
    C:\Users\Admin\AppData\Local\Temp\e7aec3c0721b775a5483aa1891d13f50.exe /stext "C:\Users\Admin\AppData\Local\Temp\lyxnmlmylvz"
    3⤵
    PID:4724
- - C:\Users\Admin\AppData\Local\Temp\e7aec3c0721b775a5483aa1891d13f50.exe
    C:\Users\Admin\AppData\Local\Temp\e7aec3c0721b775a5483aa1891d13f50.exe /stext "C:\Users\Admin\AppData\Local\Temp\lyxnmlmylvz"
    3⤵
    - Accesses Microsoft Outlook accounts
    PID:836
- - C:\Users\Admin\AppData\Local\Temp\e7aec3c0721b775a5483aa1891d13f50.exe
    C:\Users\Admin\AppData\Local\Temp\e7aec3c0721b775a5483aa1891d13f50.exe /stext "C:\Users\Admin\AppData\Local\Temp\osdgnewrzdrhia"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4616

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

bwsvltbw

Path C:\Users\Admin\AppData\Local\Temp\bwsvltbw
Size 4KB
SHA256 c02f630d99769ab6a71fec1ee712a8c6a97742e5469b4e4157d5ca716e09e62c
MD5 8376e754a86cd9a9461b4a4ae2486b11
SHA1 d0e566622882fde386f482f1dcee15b2c7fa5d3a
SHA512 a1caf85a93499f37d7451bf9b3ef01cbf833e9371585257c009a5de183d072d46a0b8124a8816e0bd94025a5129ad6fb15738f12a865485a3aff07343a14ec6a
SSDEEP 48:wvvv0wZxfvvcwZxfdvv0wZxBvv0wZxakvv0wZ7:mvtxvVp1vtPvtbvt7
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/836-145-0x0000000000400000-0x0000000000457000-memory.dmp

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memory/3288-140-0x0000000000400000-0x000000000047E000-memory.dmp

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memory/3288-137-0x0000000000400000-0x000000000047E000-memory.dmp

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memory/3288-138-0x0000000000400000-0x000000000047E000-memory.dmp

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memory/3288-139-0x0000000000400000-0x000000000047E000-memory.dmp

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memory/3288-150-0x0000000000400000-0x000000000047E000-memory.dmp

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memory/4156-132-0x0000000004B30000-0x0000000004BC2000-memory.dmp

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memory/4156-135-0x0000000008A70000-0x0000000008AD6000-memory.dmp

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memory/4156-130-0x0000000000050000-0x0000000000186000-memory.dmp

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memory/4156-131-0x00000000050E0000-0x0000000005684000-memory.dmp

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memory/4156-133-0x0000000004CE0000-0x0000000004CEA000-memory.dmp

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memory/4156-134-0x00000000089D0000-0x0000000008A6C000-memory.dmp

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memory/4616-146-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/4748-147-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/4748-148-0x0000000000400000-0x0000000000478000-memory.dmp

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