remcos | 9fa967927c2ea48e94af83b833bc6c0b98c0564dce0cfc106bb5e0e83c0ad379

General

Target

HBL# 9F62560 DOCUMENTS.bat.exe
Size

957KB
MD5

f5d1f808ad17745f6360c50baf3a031a
SHA1

94e5bd83e1f0eb1a6eebf7863c3904a0bc1859f1
SHA256

9fa967927c2ea48e94af83b833bc6c0b98c0564dce0cfc106bb5e0e83c0ad379
SHA512

c76ca57b3e0edb2f41f9724f19e9bbd42f61135c0959f855ee205ad18a409985ad36a5ee1ac79e4ec0229326147041910102c6ccc23fde4c20a28df0272517b2
SSDEEP

24576:TfTXgSBFRDpZ7I9MKt2C5pOcawmFdiWSrS:TLwCFRDpZc95ZjObcWn

Score

10^/10

remcos remotehost collection credential_access discovery execution rat stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

162.251.122.90:2404

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-P2NLZP
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 3 IoCs

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

resource	yara_rule
behavioral1/memory/2808-36-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2028-29-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2860-37-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/2860-37-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/2028-29-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
296	powershell.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-940600906-3464502421-4240639183-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	wab.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2644	wab.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
296	powershell.exe
2644	wab.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 296 set thread context of 2644	296	powershell.exe	33
PID 2644 set thread context of 2028	2644	wab.exe	36
PID 2644 set thread context of 2860	2644	wab.exe	37
PID 2644 set thread context of 2808	2644	wab.exe	38

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 6 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	wab.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HBL# 9F62560 DOCUMENTS.bat.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wab.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wab.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wab.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
296	powershell.exe
296	powershell.exe
296	powershell.exe
296	powershell.exe
296	powershell.exe
296	powershell.exe
296	powershell.exe
296	powershell.exe
2028	wab.exe
2028	wab.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2644	wab.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
296	powershell.exe
2644	wab.exe
2644	wab.exe
2644	wab.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	296	powershell.exe
Token: SeDebugPrivilege	2808	wab.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2644	wab.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2352 wrote to memory of 296	2352	HBL# 9F62560 DOCUMENTS.bat.exe	30
PID 2352 wrote to memory of 296	2352	HBL# 9F62560 DOCUMENTS.bat.exe	30
PID 2352 wrote to memory of 296	2352	HBL# 9F62560 DOCUMENTS.bat.exe	30
PID 2352 wrote to memory of 296	2352	HBL# 9F62560 DOCUMENTS.bat.exe	30
PID 296 wrote to memory of 2644	296	powershell.exe	33
PID 296 wrote to memory of 2644	296	powershell.exe	33
PID 296 wrote to memory of 2644	296	powershell.exe	33
PID 296 wrote to memory of 2644	296	powershell.exe	33
PID 296 wrote to memory of 2644	296	powershell.exe	33
PID 296 wrote to memory of 2644	296	powershell.exe	33
PID 2644 wrote to memory of 2028	2644	wab.exe	36
PID 2644 wrote to memory of 2028	2644	wab.exe	36
PID 2644 wrote to memory of 2028	2644	wab.exe	36
PID 2644 wrote to memory of 2028	2644	wab.exe	36
PID 2644 wrote to memory of 2028	2644	wab.exe	36
PID 2644 wrote to memory of 2860	2644	wab.exe	37
PID 2644 wrote to memory of 2860	2644	wab.exe	37
PID 2644 wrote to memory of 2860	2644	wab.exe	37
PID 2644 wrote to memory of 2860	2644	wab.exe	37
PID 2644 wrote to memory of 2860	2644	wab.exe	37
PID 2644 wrote to memory of 2808	2644	wab.exe	38
PID 2644 wrote to memory of 2808	2644	wab.exe	38
PID 2644 wrote to memory of 2808	2644	wab.exe	38
PID 2644 wrote to memory of 2808	2644	wab.exe	38
PID 2644 wrote to memory of 2808	2644	wab.exe	38

C:\Users\Admin\AppData\Local\Temp\HBL# 9F62560 DOCUMENTS.bat.exe
"C:\Users\Admin\AppData\Local\Temp\HBL# 9F62560 DOCUMENTS.bat.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2352
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" -windowstyle hidden "$Countershade=Get-Content 'C:\Users\Admin\AppData\Roaming\indfatte\Subconically\illighten\Busserviceanlggene.Fan';$Afpudsnings=$Countershade.SubString(7697,3);.$Afpudsnings($Countershade)"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:296
- - C:\Program Files (x86)\windows mail\wab.exe
    "C:\Program Files (x86)\windows mail\wab.exe"
    3⤵
    - Suspicious use of NtCreateThreadExHideFromDebugger
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2644
  - - C:\Program Files (x86)\windows mail\wab.exe
      "C:\Program Files (x86)\windows mail\wab.exe" /stext "C:\Users\Admin\AppData\Local\Temp\jgkcatsnkjoqtutvyikxsdslaw"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2028
  - - C:\Program Files (x86)\windows mail\wab.exe
      "C:\Program Files (x86)\windows mail\wab.exe" /stext "C:\Users\Admin\AppData\Local\Temp\tipmbmdgxrguvipzqtxrvinujdhkt"
      4⤵
      Accesses Microsoft Outlook accounts
      System Location Discovery: System Language Discovery
      PID:2860
  - - C:\Program Files (x86)\windows mail\wab.exe
      "C:\Program Files (x86)\windows mail\wab.exe" /stext "C:\Users\Admin\AppData\Local\Temp\vcufceoilzyhgpedzdjsgvilsrqlndrf"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      PID:2808

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
2a5f446c003de87a82f2107c4b44f3e4

SHA1
f9c328a60a1ca2d3edb2f2ce66432d37d8830fc6

SHA256
bd33b3bdc8d84f40d433c5d2d36a2d91b7fb6c00532b256431fe69bd794c63d3

SHA512
8a1531aecac50dc9ca6dbdbaa965b2da404949a102672672b8b09022932300618f5cf16ebc85bb61cb343b967ae27b7fd48091d8dc41d79316f6aafa151adbe3

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

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
C:\Users\Admin\AppData\Roaming\indfatte\Subconically\illighten\Busserviceanlggene.Fan

Filesize
68KB

MD5
8df0400733724426ff133da1b0bc7dc8

SHA1
b3741c64bc0dcb3d9afb4bcb71848a5cb89284c5

SHA256
dec562bdd7b0a7fcbd2f2f26b3d54bc95b532e2f21eb391caacf93d28d7e81e7

SHA512
6204e9aa8e1033317a3c07c01d949ddc3bb603e89bf182d52b6a5ced52aeee3e8e186cb72b440710d76571b046c0c5a039414f32f4030580a65f535aa8635111

Download Submit
C:\Users\Admin\AppData\Roaming\indfatte\Subconically\illighten\Distriktschef.Nyr

Filesize
309KB

MD5
fbf4d6039c227e16769e1a06de8681c6

SHA1
0f9fd71b44fb238a938d717bff74e3b3921c0f1f

SHA256
2e0450584c352eb7f81b649b831e36d8c794737cdaf2cc96cc3eb9ef6654b8b3

SHA512
be9f0a955f69adfa1e836f4c580dbb1248e88ebecde03036fa6a4cf0981a9ccb9ea8c15c3abe157e3481c0e3d1d17eb5a936876109c79af3965c61f0ee3c78b0

Download Submit
memory/296-18-0x00000000066C0000-0x000000000BC4A000-memory.dmp

Filesize
85.5MB

Download
memory/296-15-0x0000000074210000-0x00000000747BB000-memory.dmp

Filesize
5.7MB

Download
memory/296-12-0x0000000074210000-0x00000000747BB000-memory.dmp

Filesize
5.7MB

Download
memory/296-17-0x0000000074210000-0x00000000747BB000-memory.dmp

Filesize
5.7MB

Download
memory/296-19-0x0000000074210000-0x00000000747BB000-memory.dmp

Filesize
5.7MB

Download
memory/296-9-0x0000000074211000-0x0000000074212000-memory.dmp

Filesize
4KB

Download
memory/296-11-0x0000000074210000-0x00000000747BB000-memory.dmp

Filesize
5.7MB

Download
memory/296-10-0x0000000074210000-0x00000000747BB000-memory.dmp

Filesize
5.7MB

Download
memory/2028-29-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2028-26-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2028-27-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2028-28-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2644-56-0x0000000000A70000-0x0000000001AD2000-memory.dmp

Filesize
16.4MB

Download
memory/2644-62-0x0000000000A70000-0x0000000001AD2000-memory.dmp

Filesize
16.4MB

Download
memory/2644-83-0x0000000000A70000-0x0000000001AD2000-memory.dmp

Filesize
16.4MB

Download
memory/2644-80-0x0000000000A70000-0x0000000001AD2000-memory.dmp

Filesize
16.4MB

Download
memory/2644-77-0x0000000000A70000-0x0000000001AD2000-memory.dmp

Filesize
16.4MB

Download
memory/2644-74-0x0000000000A70000-0x0000000001AD2000-memory.dmp

Filesize
16.4MB

Download
memory/2644-71-0x0000000000A70000-0x0000000001AD2000-memory.dmp

Filesize
16.4MB

Download
memory/2644-68-0x0000000000A70000-0x0000000001AD2000-memory.dmp

Filesize
16.4MB

Download
memory/2644-44-0x0000000021E50000-0x0000000021E69000-memory.dmp

Filesize
100KB

Download
memory/2644-48-0x0000000021E50000-0x0000000021E69000-memory.dmp

Filesize
100KB

Download
memory/2644-47-0x0000000021E50000-0x0000000021E69000-memory.dmp

Filesize
100KB

Download
memory/2644-50-0x0000000000A70000-0x0000000001AD2000-memory.dmp

Filesize
16.4MB

Download
memory/2644-53-0x0000000000A70000-0x0000000001AD2000-memory.dmp

Filesize
16.4MB

Download
memory/2644-25-0x0000000000A70000-0x0000000001AD2000-memory.dmp

Filesize
16.4MB

Download
memory/2644-20-0x0000000000A70000-0x0000000001AD2000-memory.dmp

Filesize
16.4MB

Download
memory/2644-59-0x0000000000A70000-0x0000000001AD2000-memory.dmp

Filesize
16.4MB

Download
memory/2644-65-0x0000000000A70000-0x0000000001AD2000-memory.dmp

Filesize
16.4MB

Download
memory/2808-36-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2808-32-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2808-35-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2808-33-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2860-37-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2860-34-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2860-31-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download

Analysis

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