remcos | caf42d7fbf9c9e246bf7266cd08a763f39ee1eaf06c7f6ce0758be2511458b5a

General

Target

17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe
Size

482KB
MD5

d82f58136dcb77606b7298c80818fbf8
SHA1

a1a75c2416da3bf3294e1953c88037a0eb551beb
SHA256

caf42d7fbf9c9e246bf7266cd08a763f39ee1eaf06c7f6ce0758be2511458b5a
SHA512

d845e38e727c2990e3a9a33ee1e97ed7c677c601f03a68aabe70c997983e3187932a5b6a3f5c335f69230b06701a9f8ec1ec40d39c5ce5e895750f3bb29522a8
SSDEEP

6144:KTz+c6KHYBhDc1RGJdv//NkUn+N5Bkf/0TELRvIZPjbsAOZZBAXccrS4T4:KTlrYw1RUh3NFn+N5WfIQIjbs/ZBkT4

Score

10^/10

remcos akpu idemili collection credential_access discovery rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

Akpu idemili

C2

closen.kozow.com:2404

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-3WVVD0
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Detected Nirsoft tools 9 IoCs

Free utilities often used by attackers which can steal passwords, product keys, etc.

resource	yara_rule
behavioral2/memory/3088-18-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2340-17-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3448-16-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/3088-23-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2340-12-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3088-11-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2340-7-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3448-6-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/3448-26-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/2340-17-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/2340-12-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/2340-7-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/3448-16-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/3448-6-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/3448-26-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

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

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 688 set thread context of 3448	688	17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe	89
PID 688 set thread context of 2340	688	17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe	90
PID 688 set thread context of 3088	688	17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe	91

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3448	17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe
3448	17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe
3088	17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe
3088	17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe
3448	17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe
3448	17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
688	17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe
688	17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe
688	17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3088	17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
688	17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 688 wrote to memory of 3448	688	17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe	89
PID 688 wrote to memory of 3448	688	17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe	89
PID 688 wrote to memory of 3448	688	17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe	89
PID 688 wrote to memory of 2340	688	17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe	90
PID 688 wrote to memory of 2340	688	17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe	90
PID 688 wrote to memory of 2340	688	17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe	90
PID 688 wrote to memory of 3088	688	17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe	91
PID 688 wrote to memory of 3088	688	17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe	91
PID 688 wrote to memory of 3088	688	17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe	91

C:\Users\Admin\AppData\Local\Temp\17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe
"C:\Users\Admin\AppData\Local\Temp\17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:688
- C:\Users\Admin\AppData\Local\Temp\17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\dfljrgfomjnnsiukdgpyrcohuoegoijyb"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:3448
- C:\Users\Admin\AppData\Local\Temp\17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\ozytsz"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:2340
- C:\Users\Admin\AppData\Local\Temp\17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17247382850e9d35ba56d7cab102012d8a96e1cae9d8f7dc9f0310f5c4bd678c7da9a1f87c988.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\ybemsrjjw"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3088

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
c76fea2ad62a2109ad215235f425efda

SHA1
2e45b6a82fc50574e10128777f72969cf22e7e42

SHA256
90bf7c487e7b269cee0481701f38dd3c9be240f51afd8ede7377cac6dddd6ca8

SHA512
0bd673a31c7245755d1dea0b8fb7036aace25f6759b6318f46c597c7d0e348052df118575599b17234b412824c60839fcc2c4ff2011a3c22f4f192d94969e4ef

Download Submit
C:\Users\Admin\AppData\Local\Temp\dfljrgfomjnnsiukdgpyrcohuoegoijyb

Filesize
4KB

MD5
16f4f7c4051f4bbdaa93a1ca80690065

SHA1
750cacbdd2d089a88119374560d6ac004954e90e

SHA256
6c4559e4413cccaeab73cad48ffd804506c95566e4d6a3f5ae64017a33ea6ec2

SHA512
cb0f68d393ad03a5c802a2978ff7b12e20911bac5e27200c2df16d5d3f63dfc2387c0cd1a9075d8e4ba9ae804a6b61225575e2f42b3ef024e863d5b172417964

Download Submit
memory/688-32-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/688-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/688-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/688-33-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/688-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/688-29-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/688-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2340-17-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2340-12-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2340-2-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2340-7-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2340-5-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3088-23-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3088-8-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3088-11-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3088-10-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3088-21-0x0000000000430000-0x00000000004F9000-memory.dmp

Filesize
804KB

Download
memory/3088-18-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3448-26-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3448-6-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3448-0-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3448-16-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3448-4-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download

Analysis

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