remcos | 4d87f600c35b4b795142195bbe75c8e1a80f3c587c0c5eea6afa20d2f6587861

Analysis

max time kernel
155s
max time network
159s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
24/11/2022, 16:33

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General

Target
file.exe
Size 972KB
Sample221124-t2hkhsfd65
SHA256 4d87f600c35b4b795142195bbe75c8e1a80f3c587c0c5eea6afa20d2f6587861
MD5 3d21e82b2ab2331133cbf0fe32c43f7a
SHA1 7bcd150f9e1377bb3439fac2d631a59c2bf06fac
SHA512 6ada585028f73f0de860900275a384638a59648252842cbef60da2d9be63e2272cf7ae09914c2fafa5fc85809c3d7f59369d291b702211a44cdaa1b64c563529
SSDEEP 12288:jagh/PsZ1DX/VDJKqzbq+HyByFAchZgiHeRhWqK2N0xW8yhn4VTBRWhA84PT2kyD:jagh/PBUtjFxgUemxhyah7XTDTs
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

remcos awele persistence rat

Malware Config

Extracted

Family

remcos

Botnet

Awele

gdyhjjdhbvxgsfe.gotdns.ch:2718

Attributes

audio_folder
MicRecords
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
qoc.exe
delete_file
false
hide_file
true
hide_keylog_file
true
install_flag
true
install_path
%AppData%
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-LLTFOH
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
mix
take_screenshot_option
false
take_screenshot_time
5
take_screenshot_title
notepad;solitaire;

Signatures

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

Executes dropped EXE 2 IoCs

pid	Process
2612	qoc.exe
3212	qoc.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	file.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	WScript.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mix = "\"C:\\Users\\Admin\\AppData\\Roaming\\qoc.exe\""	file.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows\CurrentVersion\Run\	qoc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mix = "\"C:\\Users\\Admin\\AppData\\Roaming\\qoc.exe\""	qoc.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows\CurrentVersion\Run\	file.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1348 set thread context of 1836	1348	file.exe	89
PID 2612 set thread context of 3212	2612	qoc.exe	95

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings	file.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3212	qoc.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1348 wrote to memory of 1836	1348	file.exe	89
PID 1348 wrote to memory of 1836	1348	file.exe	89
PID 1348 wrote to memory of 1836	1348	file.exe	89
PID 1348 wrote to memory of 1836	1348	file.exe	89
PID 1348 wrote to memory of 1836	1348	file.exe	89
PID 1348 wrote to memory of 1836	1348	file.exe	89
PID 1348 wrote to memory of 1836	1348	file.exe	89
PID 1348 wrote to memory of 1836	1348	file.exe	89
PID 1348 wrote to memory of 1836	1348	file.exe	89
PID 1348 wrote to memory of 1836	1348	file.exe	89
PID 1348 wrote to memory of 1836	1348	file.exe	89
PID 1348 wrote to memory of 1836	1348	file.exe	89
PID 1836 wrote to memory of 3244	1836	file.exe	90
PID 1836 wrote to memory of 3244	1836	file.exe	90
PID 1836 wrote to memory of 3244	1836	file.exe	90
PID 3244 wrote to memory of 3420	3244	WScript.exe	91
PID 3244 wrote to memory of 3420	3244	WScript.exe	91
PID 3244 wrote to memory of 3420	3244	WScript.exe	91
PID 3420 wrote to memory of 2612	3420	cmd.exe	93
PID 3420 wrote to memory of 2612	3420	cmd.exe	93
PID 3420 wrote to memory of 2612	3420	cmd.exe	93
PID 2612 wrote to memory of 3212	2612	qoc.exe	95
PID 2612 wrote to memory of 3212	2612	qoc.exe	95
PID 2612 wrote to memory of 3212	2612	qoc.exe	95
PID 2612 wrote to memory of 3212	2612	qoc.exe	95
PID 2612 wrote to memory of 3212	2612	qoc.exe	95
PID 2612 wrote to memory of 3212	2612	qoc.exe	95
PID 2612 wrote to memory of 3212	2612	qoc.exe	95
PID 2612 wrote to memory of 3212	2612	qoc.exe	95
PID 2612 wrote to memory of 3212	2612	qoc.exe	95
PID 2612 wrote to memory of 3212	2612	qoc.exe	95
PID 2612 wrote to memory of 3212	2612	qoc.exe	95
PID 2612 wrote to memory of 3212	2612	qoc.exe	95

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1348
- C:\Users\Admin\AppData\Local\Temp\file.exe
  "C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1836
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
    3⤵
    - Checks computer location settings
    - Suspicious use of WriteProcessMemory
    PID:3244
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\qoc.exe"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3420
    - - C:\Users\Admin\AppData\Roaming\qoc.exe
        
        C:\Users\Admin\AppData\Roaming\qoc.exe
        5⤵
        Executes dropped EXE
        Suspicious use of SetThreadContext
        Suspicious use of WriteProcessMemory
        
        PID:2612
      - C:\Users\Admin\AppData\Roaming\qoc.exe
        
        "C:\Users\Admin\AppData\Roaming\qoc.exe"
        6⤵
        Executes dropped EXE
        Adds Run key to start application
        Suspicious use of SetWindowsHookEx
        
        PID:3212

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

install.vbs

Path C:\Users\Admin\AppData\Local\Temp\install.vbs
Size 398B
SHA256 bfdf30f700f36f615a0b3a9389bdaa2b3a334ece816e95a3090f7c41ec8efba6
MD5 9edf722c5b68fc5befaf057c2aad1ccb
SHA1 0b079fc86d4c859ecb3c1a1893b6ffae2eb1e2cb
SHA512 ea4f1e5842c38f998f2050004f4af9ffedeb0bbd4e6cf9e29b037f9659d48dd17b477a2b0ab23c1b6f8b94c4355a17f6155965bada1b98fd12c2868ec7ea82fc
MD5 SHA1 SHA512

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qoc.exe

Path C:\Users\Admin\AppData\Roaming\qoc.exe
Size 972KB
SHA256 4d87f600c35b4b795142195bbe75c8e1a80f3c587c0c5eea6afa20d2f6587861
MD5 3d21e82b2ab2331133cbf0fe32c43f7a
SHA1 7bcd150f9e1377bb3439fac2d631a59c2bf06fac
SHA512 6ada585028f73f0de860900275a384638a59648252842cbef60da2d9be63e2272cf7ae09914c2fafa5fc85809c3d7f59369d291b702211a44cdaa1b64c563529
SSDEEP 12288:jagh/PsZ1DX/VDJKqzbq+HyByFAchZgiHeRhWqK2N0xW8yhn4VTBRWhA84PT2kyD:jagh/PBUtjFxgUemxhyah7XTDTs
MD5 SHA1 SHA512 SSDEEP

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qoc.exe

Path C:\Users\Admin\AppData\Roaming\qoc.exe
Size 972KB
SHA256 4d87f600c35b4b795142195bbe75c8e1a80f3c587c0c5eea6afa20d2f6587861
MD5 3d21e82b2ab2331133cbf0fe32c43f7a
SHA1 7bcd150f9e1377bb3439fac2d631a59c2bf06fac
SHA512 6ada585028f73f0de860900275a384638a59648252842cbef60da2d9be63e2272cf7ae09914c2fafa5fc85809c3d7f59369d291b702211a44cdaa1b64c563529
SSDEEP 12288:jagh/PsZ1DX/VDJKqzbq+HyByFAchZgiHeRhWqK2N0xW8yhn4VTBRWhA84PT2kyD:jagh/PBUtjFxgUemxhyah7XTDTs
MD5 SHA1 SHA512 SSDEEP

Submit Download

qoc.exe

Path C:\Users\Admin\AppData\Roaming\qoc.exe
Size 972KB
SHA256 4d87f600c35b4b795142195bbe75c8e1a80f3c587c0c5eea6afa20d2f6587861
MD5 3d21e82b2ab2331133cbf0fe32c43f7a
SHA1 7bcd150f9e1377bb3439fac2d631a59c2bf06fac
SHA512 6ada585028f73f0de860900275a384638a59648252842cbef60da2d9be63e2272cf7ae09914c2fafa5fc85809c3d7f59369d291b702211a44cdaa1b64c563529
SSDEEP 12288:jagh/PsZ1DX/VDJKqzbq+HyByFAchZgiHeRhWqK2N0xW8yhn4VTBRWhA84PT2kyD:jagh/PBUtjFxgUemxhyah7XTDTs
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1348-133-0x00000000053A0000-0x0000000005944000-memory.dmp

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memory/1348-134-0x0000000004E90000-0x0000000004F22000-memory.dmp

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memory/1348-135-0x0000000004E80000-0x0000000004E8A000-memory.dmp

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memory/1348-136-0x00000000075B0000-0x000000000764C000-memory.dmp

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memory/1348-132-0x00000000003D0000-0x00000000004CA000-memory.dmp

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memory/1836-139-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1836-141-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1836-144-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1836-138-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1836-140-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/3212-152-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/3212-153-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/3212-154-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/3212-155-0x0000000000400000-0x000000000047F000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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