remcos | 680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb

General

Target

680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
Size

519KB
MD5

c08bdb833f04aa88f5b1035500fd0e2d
SHA1

3514864b019defdac263d3fcd54ded96d72743c4
SHA256

680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb
SHA512

a262042139b9e2f830afbc6e7e66e3597a6bd25d6e54b6f50e767497470dc59070a658ba9530c908a68c04410370616c7611c5cfcbd970de6a089db68e76a139
SSDEEP

12288:to+VIWBon+um+82Qx2qlM7uSibfXpzdYFcXT+/MOTjpMU5EUG13:e+VIWCn+lD2aSUXpzdwcXiUScUW

Score

10^/10

remcos remotehost collection credential_access discovery rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

162.251.122.106:2404

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-A7EXAF
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 6 IoCs

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

resource	yara_rule
behavioral1/memory/1984-45-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/732-35-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/784-40-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/1984-46-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/732-54-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/784-57-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/784-40-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral1/memory/784-57-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 2 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/732-35-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/732-54-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Loads dropped DLL 1 IoCs

pid	Process
2644	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.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

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2828	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2644	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
2828	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2644 set thread context of 2828	2644	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	30
PID 2828 set thread context of 732	2828	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	32
PID 2828 set thread context of 784	2828	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	33
PID 2828 set thread context of 1984	2828	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	34

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 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	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
732	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
732	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
2644	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
2828	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
2828	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
2828	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1984	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2828	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2644 wrote to memory of 2828	2644	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	30
PID 2644 wrote to memory of 2828	2644	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	30
PID 2644 wrote to memory of 2828	2644	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	30
PID 2644 wrote to memory of 2828	2644	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	30
PID 2644 wrote to memory of 2828	2644	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	30
PID 2644 wrote to memory of 2828	2644	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	30
PID 2828 wrote to memory of 732	2828	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	32
PID 2828 wrote to memory of 732	2828	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	32
PID 2828 wrote to memory of 732	2828	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	32
PID 2828 wrote to memory of 732	2828	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	32
PID 2828 wrote to memory of 784	2828	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	33
PID 2828 wrote to memory of 784	2828	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	33
PID 2828 wrote to memory of 784	2828	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	33
PID 2828 wrote to memory of 784	2828	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	33
PID 2828 wrote to memory of 1984	2828	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	34
PID 2828 wrote to memory of 1984	2828	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	34
PID 2828 wrote to memory of 1984	2828	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	34
PID 2828 wrote to memory of 1984	2828	680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe	34

C:\Users\Admin\AppData\Local\Temp\680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
"C:\Users\Admin\AppData\Local\Temp\680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2644
- C:\Users\Admin\AppData\Local\Temp\680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
  "C:\Users\Admin\AppData\Local\Temp\680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2828
- - C:\Users\Admin\AppData\Local\Temp\680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
    C:\Users\Admin\AppData\Local\Temp\680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe /stext "C:\Users\Admin\AppData\Local\Temp\ynifc"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:732
- - C:\Users\Admin\AppData\Local\Temp\680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
    C:\Users\Admin\AppData\Local\Temp\680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe /stext "C:\Users\Admin\AppData\Local\Temp\jpopdczzz"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:784
- - C:\Users\Admin\AppData\Local\Temp\680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe
    C:\Users\Admin\AppData\Local\Temp\680aab32e024714f6755bc2817bf7a68fe8ccb12bf72141d176080a1c7f66aeb.exe /stext "C:\Users\Admin\AppData\Local\Temp\tjtidvkbvmis"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:1984

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 Information Discovery

1

T1082

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
716bac881ff067009b019010be3cf351

SHA1
3f3bd3935df8cb41a76f293fccd49929ffb8c4cb

SHA256
9994a08f19f1bd5c1d1868583bd568ec09fcd2fcb6b9371e14ed9f43132ad82e

SHA512
a985866b6eab1e513a4fd8f31f3827e316a8ec04b4665c280f4d83e7a5fb2e0095857c344afbff4a9d539e06eedb7f762eb15a3c4c31d1d494d7b1dc9bb2fd72

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

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
\Users\Admin\AppData\Local\Temp\nsyDC7.tmp\System.dll

Filesize
11KB

MD5
3f176d1ee13b0d7d6bd92e1c7a0b9bae

SHA1
fe582246792774c2c9dd15639ffa0aca90d6fd0b

SHA256
fa4ab1d6f79fd677433a31ada7806373a789d34328da46ccb0449bbf347bd73e

SHA512
0a69124819b7568d0dea4e9e85ce8fe61c7ba697c934e3a95e2dcfb9f252b1d9da7faf8774b6e8efd614885507acc94987733eba09a2f5e7098b774dfc8524b6

Download Submit
memory/732-31-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/732-34-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/732-54-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/732-38-0x0000000077920000-0x0000000077AC9000-memory.dmp

Filesize
1.7MB

Download
memory/732-35-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/784-57-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/784-37-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/784-32-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/784-39-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/784-40-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/784-41-0x0000000077920000-0x0000000077AC9000-memory.dmp

Filesize
1.7MB

Download
memory/1984-44-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1984-43-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1984-46-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1984-45-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2644-13-0x0000000077920000-0x0000000077AC9000-memory.dmp

Filesize
1.7MB

Download
memory/2644-12-0x0000000077921000-0x0000000077A22000-memory.dmp

Filesize
1.0MB

Download
memory/2828-15-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/2828-24-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/2828-30-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/2828-59-0x0000000035FF0000-0x0000000036009000-memory.dmp

Filesize
100KB

Download
memory/2828-63-0x0000000035FF0000-0x0000000036009000-memory.dmp

Filesize
100KB

Download
memory/2828-62-0x0000000035FF0000-0x0000000036009000-memory.dmp

Filesize
100KB

Download
memory/2828-65-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/2828-14-0x0000000077920000-0x0000000077AC9000-memory.dmp

Filesize
1.7MB

Download
memory/2828-68-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/2828-71-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download

Analysis

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