remcos | 643392c6e6e08f0b36bebb32b6c14a32185db723dabbb36b910dd65025522b3a

Analysis

max time kernel
148s
max time network
133s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
07/08/2024, 01:35

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General

Target

643392c6e6e08f0b36bebb32b6c14a32185db723dabbb36b910dd65025522b3a.exe
Size

2.2MB
MD5

3ed90b2bd6ec121cf790ecad26211841
SHA1

d94d98f456cdc4361c570ecd58c610d028f59cfa
SHA256

643392c6e6e08f0b36bebb32b6c14a32185db723dabbb36b910dd65025522b3a
SHA512

9b3974210037f14af9ba26dfc1b36fecae9c54f959ba9ef458b088f126b77b269d3dc1990066e8f940739a78889104be206b8ef37b9837215e494e93bd846681
SSDEEP

24576:aj553zh61j6HexTq60rWTu2mTOI40R4c0vuu0:aj553z0celp0aC2mTd+uH

Score

10^/10

remcos dollar man collection credential_access discovery rat stealer

Malware Config

Extracted

Family

remcos

Botnet

Dollar Man

178.23.190.118:52499

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-SJ9MVF
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 5 IoCs

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

resource	yara_rule
behavioral2/memory/3788-29-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/896-32-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/1204-36-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1204-37-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/896-39-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/1204-36-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/1204-37-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 2 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/896-32-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/896-39-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	ilasm.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 4340 set thread context of 2252	4340	643392c6e6e08f0b36bebb32b6c14a32185db723dabbb36b910dd65025522b3a.exe	87
PID 2252 set thread context of 896	2252	ilasm.exe	93
PID 2252 set thread context of 1204	2252	ilasm.exe	94
PID 2252 set thread context of 3788	2252	ilasm.exe	95

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	ilasm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ilasm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ilasm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ilasm.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3788	ilasm.exe
3788	ilasm.exe
896	ilasm.exe
896	ilasm.exe
896	ilasm.exe
896	ilasm.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
2252	ilasm.exe
2252	ilasm.exe
2252	ilasm.exe
2252	ilasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3788	ilasm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2252	ilasm.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 4340 wrote to memory of 2252	4340	643392c6e6e08f0b36bebb32b6c14a32185db723dabbb36b910dd65025522b3a.exe	87
PID 4340 wrote to memory of 2252	4340	643392c6e6e08f0b36bebb32b6c14a32185db723dabbb36b910dd65025522b3a.exe	87
PID 4340 wrote to memory of 2252	4340	643392c6e6e08f0b36bebb32b6c14a32185db723dabbb36b910dd65025522b3a.exe	87
PID 4340 wrote to memory of 2252	4340	643392c6e6e08f0b36bebb32b6c14a32185db723dabbb36b910dd65025522b3a.exe	87
PID 4340 wrote to memory of 2252	4340	643392c6e6e08f0b36bebb32b6c14a32185db723dabbb36b910dd65025522b3a.exe	87
PID 4340 wrote to memory of 2252	4340	643392c6e6e08f0b36bebb32b6c14a32185db723dabbb36b910dd65025522b3a.exe	87
PID 4340 wrote to memory of 2252	4340	643392c6e6e08f0b36bebb32b6c14a32185db723dabbb36b910dd65025522b3a.exe	87
PID 4340 wrote to memory of 2252	4340	643392c6e6e08f0b36bebb32b6c14a32185db723dabbb36b910dd65025522b3a.exe	87
PID 4340 wrote to memory of 2252	4340	643392c6e6e08f0b36bebb32b6c14a32185db723dabbb36b910dd65025522b3a.exe	87
PID 4340 wrote to memory of 2252	4340	643392c6e6e08f0b36bebb32b6c14a32185db723dabbb36b910dd65025522b3a.exe	87
PID 4340 wrote to memory of 2252	4340	643392c6e6e08f0b36bebb32b6c14a32185db723dabbb36b910dd65025522b3a.exe	87
PID 4340 wrote to memory of 2252	4340	643392c6e6e08f0b36bebb32b6c14a32185db723dabbb36b910dd65025522b3a.exe	87
PID 4340 wrote to memory of 3336	4340	643392c6e6e08f0b36bebb32b6c14a32185db723dabbb36b910dd65025522b3a.exe	88
PID 4340 wrote to memory of 3336	4340	643392c6e6e08f0b36bebb32b6c14a32185db723dabbb36b910dd65025522b3a.exe	88
PID 4340 wrote to memory of 3336	4340	643392c6e6e08f0b36bebb32b6c14a32185db723dabbb36b910dd65025522b3a.exe	88
PID 2252 wrote to memory of 5068	2252	ilasm.exe	92
PID 2252 wrote to memory of 5068	2252	ilasm.exe	92
PID 2252 wrote to memory of 5068	2252	ilasm.exe	92
PID 2252 wrote to memory of 896	2252	ilasm.exe	93
PID 2252 wrote to memory of 896	2252	ilasm.exe	93
PID 2252 wrote to memory of 896	2252	ilasm.exe	93
PID 2252 wrote to memory of 896	2252	ilasm.exe	93
PID 2252 wrote to memory of 1204	2252	ilasm.exe	94
PID 2252 wrote to memory of 1204	2252	ilasm.exe	94
PID 2252 wrote to memory of 1204	2252	ilasm.exe	94
PID 2252 wrote to memory of 1204	2252	ilasm.exe	94
PID 2252 wrote to memory of 3788	2252	ilasm.exe	95
PID 2252 wrote to memory of 3788	2252	ilasm.exe	95
PID 2252 wrote to memory of 3788	2252	ilasm.exe	95
PID 2252 wrote to memory of 3788	2252	ilasm.exe	95

C:\Users\Admin\AppData\Local\Temp\643392c6e6e08f0b36bebb32b6c14a32185db723dabbb36b910dd65025522b3a.exe
"C:\Users\Admin\AppData\Local\Temp\643392c6e6e08f0b36bebb32b6c14a32185db723dabbb36b910dd65025522b3a.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4340
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2252
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe /stext "C:\Users\Admin\AppData\Local\Temp\qsbxfeqffojdotpadir"
    3⤵
    PID:5068
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe /stext "C:\Users\Admin\AppData\Local\Temp\qsbxfeqffojdotpadir"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:896
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe /stext "C:\Users\Admin\AppData\Local\Temp\sugigxbhtxbiqzdentmpkm"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:1204
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe /stext "C:\Users\Admin\AppData\Local\Temp\colbhpmbpftvagziweyqvyvww"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3788
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe"
  2⤵
  PID:3336

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
677ce195faeb5d15482e65a2389fc5bb

SHA1
9f91c3ce9aaf7776bac93266522f619ca43633b3

SHA256
e6dd14d049f7b03c3d64690b11bc7d33d95c6314b68fab64cd54d9913f52af51

SHA512
44b95ed32a2c1ae695159a548b7bf15fb22219b0b10a98469ff646232a08f88c78b62d18955b873b5661cd5e5633f950c68f78a2e79ecabe009ffb3460d49b18

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

Filesize
4KB

MD5
faaa2b16df1bfc1a3792faaa35786349

SHA1
359534a59d7c5139ae205c24533ba60afdfb9f3f

SHA256
3586befc3b8b4da223e2ee0dcb00965ba5c0a205c14f2acefdeec7e46efddd5a

SHA512
2fbc79cace52a58e69ab983d034bb41ebb2496f767e18e5e4b31eefc4447c935d8614f744c71302e459350a05562fadc4c2355d76638b595e7cff1bb3d1618db

Download Submit
memory/896-19-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/896-39-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/896-30-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/896-32-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/896-23-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1204-37-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1204-36-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1204-20-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1204-31-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1204-24-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2252-44-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2252-70-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2252-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2252-17-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2252-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2252-78-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2252-13-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2252-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2252-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2252-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2252-62-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2252-9-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2252-8-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2252-7-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2252-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2252-6-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2252-5-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2252-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2252-77-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2252-61-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2252-41-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2252-69-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2252-45-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2252-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2252-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3788-29-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3788-26-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3788-25-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4340-4-0x0000021F228B0000-0x0000021F22980000-memory.dmp

Filesize
832KB

Download
memory/4340-0-0x0000021F08430000-0x0000021F08456000-memory.dmp

Filesize
152KB

Download
memory/4340-1-0x00007FFC5B023000-0x00007FFC5B025000-memory.dmp

Filesize
8KB

Download
memory/4340-2-0x0000021F08810000-0x0000021F08816000-memory.dmp

Filesize
24KB

Download
memory/4340-3-0x00007FFC5B020000-0x00007FFC5BAE1000-memory.dmp

Filesize
10.8MB

Download
memory/4340-14-0x00007FFC5B020000-0x00007FFC5BAE1000-memory.dmp

Filesize
10.8MB

Download