remcos | a16aadc16fa7b3e1d90470f3780e9b4e71a0eab9862a92cf0fa9de1a20076576

Analysis

max time kernel
149s
max time network
123s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
17-09-2024 13:51

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General

Target

e6f613141f103596ab5347f23d816ab3_JaffaCakes118.ps1
Size

478KB
MD5

e6f613141f103596ab5347f23d816ab3
SHA1

44a27e3b48a644d67b184c755a4038708a3bda02
SHA256

a16aadc16fa7b3e1d90470f3780e9b4e71a0eab9862a92cf0fa9de1a20076576
SHA512

e3e168946b74b0e273e8459e23ad16cee648b6c9c5c832541b6eef699c9a22fb5575acc971dc01397b167a798338ef6fa56aea4523ad08473bc6c184ec634bd0
SSDEEP

6144:jkadKG+Emf0341hM72QsbZ6eU1pY/k4XonOf3Qc5H0:jkNEmf03uhMRst6erwOfd5U

Score

10^/10

remcos zeus defense_evasion discovery execution persistence rat

Malware Config

Extracted

Family

remcos

Botnet

ZEUS

top.multigamingjo.waw.pl:3090

Attributes

audio_folder
MicRecords
audio_path
%AppData%
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
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
ZEUS-0LFWTS
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
remcos
take_screenshot_option
false
take_screenshot_time
5
take_screenshot_title
wikipedia;solitaire;

Extracted

Family

remcos

Version

2.4.7 Pro

Botnet

ZEUS

top.multigamingjo.waw.pl:3090

Attributes

audio_folder
MicRecords
audio_path
%AppData%
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
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
ZEUS-0LFWTS
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
remcos
take_screenshot_option
false
take_screenshot_time
5
take_screenshot_title
wikipedia;solitaire;

Signatures

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

Executes dropped EXE 3 IoCs

pid	Process
2204	dnuh.exe
2060	outext.exe
2492	outext.exe

Loads dropped DLL 2 IoCs

pid	Process
2116	cmd.exe
2060	outext.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-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Windows\CurrentVersion\Run\outext = "C:\\Users\\Admin\\AppData\\Local\\outext.exe -boot"	outext.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2060 set thread context of 2492	2060	outext.exe	42

Subvert Trust Controls: Mark-of-the-Web Bypass 1 TTPs 2 IoCs

When files are downloaded from the Internet, they are tagged with a hidden NTFS Alternate Data Stream (ADS) named Zone.Identifier with a specific value known as the MOTW.

defense_evasion

SIP and Trust Provider Hijacking

T1553.003

description	ioc	Process
File created	C:\Users\Public\dnuh.exe:Zone.Identifier	cmd.exe
File opened for modification	C:\Users\Admin\AppData\Local\outext.exe:Zone.Identifier	cmd.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2244	powershell.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 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dnuh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	outext.exe

NTFS ADS 3 IoCs

description	ioc	Process
File created	C:\Users\Public\dnuh.exe:Zone.Identifier	cmd.exe
File created	C:\Users\Admin\AppData\Local\outext.exe\:Zone.Identifier:$DATA	cmd.exe
File opened for modification	C:\Users\Admin\AppData\Local\outext.exe:Zone.Identifier	cmd.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2244	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2244	powershell.exe
Token: SeDebugPrivilege	2204	dnuh.exe
Token: SeDebugPrivilege	2060	outext.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2492	outext.exe

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 2244 wrote to memory of 2204	2244	powershell.exe	31
PID 2244 wrote to memory of 2204	2244	powershell.exe	31
PID 2244 wrote to memory of 2204	2244	powershell.exe	31
PID 2244 wrote to memory of 2204	2244	powershell.exe	31
PID 2204 wrote to memory of 2588	2204	dnuh.exe	33
PID 2204 wrote to memory of 2588	2204	dnuh.exe	33
PID 2204 wrote to memory of 2588	2204	dnuh.exe	33
PID 2204 wrote to memory of 2588	2204	dnuh.exe	33
PID 2204 wrote to memory of 2756	2204	dnuh.exe	35
PID 2204 wrote to memory of 2756	2204	dnuh.exe	35
PID 2204 wrote to memory of 2756	2204	dnuh.exe	35
PID 2204 wrote to memory of 2756	2204	dnuh.exe	35
PID 2204 wrote to memory of 2116	2204	dnuh.exe	37
PID 2204 wrote to memory of 2116	2204	dnuh.exe	37
PID 2204 wrote to memory of 2116	2204	dnuh.exe	37
PID 2204 wrote to memory of 2116	2204	dnuh.exe	37
PID 2116 wrote to memory of 2060	2116	cmd.exe	39
PID 2116 wrote to memory of 2060	2116	cmd.exe	39
PID 2116 wrote to memory of 2060	2116	cmd.exe	39
PID 2116 wrote to memory of 2060	2116	cmd.exe	39
PID 2060 wrote to memory of 1272	2060	outext.exe	40
PID 2060 wrote to memory of 1272	2060	outext.exe	40
PID 2060 wrote to memory of 1272	2060	outext.exe	40
PID 2060 wrote to memory of 1272	2060	outext.exe	40
PID 2060 wrote to memory of 2492	2060	outext.exe	42
PID 2060 wrote to memory of 2492	2060	outext.exe	42
PID 2060 wrote to memory of 2492	2060	outext.exe	42
PID 2060 wrote to memory of 2492	2060	outext.exe	42
PID 2060 wrote to memory of 2492	2060	outext.exe	42
PID 2060 wrote to memory of 2492	2060	outext.exe	42
PID 2060 wrote to memory of 2492	2060	outext.exe	42
PID 2060 wrote to memory of 2492	2060	outext.exe	42
PID 2060 wrote to memory of 2492	2060	outext.exe	42
PID 2060 wrote to memory of 2492	2060	outext.exe	42
PID 2060 wrote to memory of 2492	2060	outext.exe	42

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\e6f613141f103596ab5347f23d816ab3_JaffaCakes118.ps1
1⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2244
- C:\Users\Public\dnuh.exe
  "C:\Users\Public\dnuh.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2204
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /C type nul > "C:\Users\Public\dnuh.exe:Zone.Identifier"
    3⤵
    - Subvert Trust Controls: Mark-of-the-Web Bypass
    - System Location Discovery: System Language Discovery
    - NTFS ADS
    PID:2588
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c copy "C:\Users\Public\dnuh.exe" "C:\Users\Admin\AppData\Local\outext.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - NTFS ADS
    PID:2756
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c, "C:\Users\Admin\AppData\Local\outext.exe"
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2116
  - - C:\Users\Admin\AppData\Local\outext.exe
      "C:\Users\Admin\AppData\Local\outext.exe"
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Adds Run key to start application
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2060
    - - C:\Windows\SysWOW64\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /C type nul > "C:\Users\Admin\AppData\Local\outext.exe:Zone.Identifier"
        5⤵
        Subvert Trust Controls: Mark-of-the-Web Bypass
        System Location Discovery: System Language Discovery
        NTFS ADS
        
        PID:1272
    - - C:\Users\Admin\AppData\Local\outext.exe
        
        C:\Users\Admin\AppData\Local\outext.exe
        5⤵
        Executes dropped EXE
        Suspicious use of SetWindowsHookEx
        
        PID:2492

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

Subvert Trust Controls

T1553

SIP and Trust Provider Hijacking

T1553.003

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\remcos\logs.dat

Filesize
79B

MD5
cb0087ce8ecf1cf3bc6560953968c26a

SHA1
2a80fad4de996b2374cfb5568c7b0b849dcd2b67

SHA256
e4c5d4126cfeffb01f17fe91f4ede5474cb1a3072530909296fea7978c916a30

SHA512
0af807b3ff2e5efea023a76aefad4e36699b44ce7ddb248c498e5d7a1e1cd8600d200bb739d30c2a6be2c2f55aef0d388d9fca7f77f6b5082321104f3cc685ba

Download Submit
C:\Users\Public\dnuh.exe

Filesize
342KB

MD5
807924d305c39afe400a361e77f8c46e

SHA1
1f47e813a3a09dcccb9dc7880a38e507361bb3ea

SHA256
3191348a4fe34b9380c79b4d030ab921e54eff9c4d6599bc0fae45a4068416cb

SHA512
a6262d42d7ea68ef0b83bc0b52cfbc4b810dc09c5b6628b2194997ec23b26912627dd605c3ef870659fd404ac274ebec95b6b008a2f038566ca04947b331ccbb

Download Submit
memory/2060-31-0x0000000000240000-0x000000000029C000-memory.dmp

Filesize
368KB

Download
memory/2204-18-0x00000000000A0000-0x00000000000FC000-memory.dmp

Filesize
368KB

Download
memory/2204-29-0x0000000074320000-0x0000000074A0E000-memory.dmp

Filesize
6.9MB

Download
memory/2204-23-0x0000000074320000-0x0000000074A0E000-memory.dmp

Filesize
6.9MB

Download
memory/2204-22-0x0000000074320000-0x0000000074A0E000-memory.dmp

Filesize
6.9MB

Download
memory/2204-21-0x000000007432E000-0x000000007432F000-memory.dmp

Filesize
4KB

Download
memory/2204-19-0x00000000004C0000-0x00000000004E6000-memory.dmp

Filesize
152KB

Download
memory/2204-17-0x000000007432E000-0x000000007432F000-memory.dmp

Filesize
4KB

Download
memory/2244-11-0x000007FEF6040000-0x000007FEF69DD000-memory.dmp

Filesize
9.6MB

Download
memory/2244-4-0x000007FEF62FE000-0x000007FEF62FF000-memory.dmp

Filesize
4KB

Download
memory/2244-20-0x000007FEF6040000-0x000007FEF69DD000-memory.dmp

Filesize
9.6MB

Download
memory/2244-10-0x000007FEF6040000-0x000007FEF69DD000-memory.dmp

Filesize
9.6MB

Download
memory/2244-9-0x000007FEF6040000-0x000007FEF69DD000-memory.dmp

Filesize
9.6MB

Download
memory/2244-8-0x000007FEF6040000-0x000007FEF69DD000-memory.dmp

Filesize
9.6MB

Download
memory/2244-7-0x000007FEF6040000-0x000007FEF69DD000-memory.dmp

Filesize
9.6MB

Download
memory/2244-5-0x000000001B680000-0x000000001B962000-memory.dmp

Filesize
2.9MB

Download
memory/2244-6-0x0000000002690000-0x0000000002698000-memory.dmp

Filesize
32KB

Download
memory/2492-43-0x0000000000080000-0x00000000000A0000-memory.dmp

Filesize
128KB

Download
memory/2492-45-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2492-35-0x0000000000080000-0x00000000000A0000-memory.dmp

Filesize
128KB

Download
memory/2492-39-0x0000000000080000-0x00000000000A0000-memory.dmp

Filesize
128KB

Download
memory/2492-37-0x0000000000080000-0x00000000000A0000-memory.dmp

Filesize
128KB

Download
memory/2492-41-0x0000000000080000-0x00000000000A0000-memory.dmp

Filesize
128KB

Download
memory/2492-52-0x0000000000080000-0x00000000000A0000-memory.dmp

Filesize
128KB

Download
memory/2492-48-0x0000000000080000-0x00000000000A0000-memory.dmp

Filesize
128KB

Download
memory/2492-56-0x0000000000080000-0x00000000000A0000-memory.dmp

Filesize
128KB

Download
memory/2492-57-0x0000000000080000-0x00000000000A0000-memory.dmp

Filesize
128KB

Download
memory/2492-60-0x0000000000080000-0x00000000000A0000-memory.dmp

Filesize
128KB

Download
memory/2492-33-0x0000000000080000-0x00000000000A0000-memory.dmp

Filesize
128KB

Download