remcos | c42c37c46206d1beab2ca15b75af8b1f8b9c0ace15155f8ce934749ca05ea250

Analysis

max time kernel
148s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20231025-en
resource tags

arch:x64arch:x86image:win10v2004-20231025-enlocale:en-usos:windows10-2004-x64system
submitted
26/11/2023, 17:01

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

cheque-000000005903.exe
Size

634KB
MD5

dccb7779a1ced7b8c1b0274c527daeb6
SHA1

cc4c4fe4e133e654f06a3587cb0f39e32f7cd8ab
SHA256

c42c37c46206d1beab2ca15b75af8b1f8b9c0ace15155f8ce934749ca05ea250
SHA512

73a02c75b78e2e6fd159f3e043376ae87c064b4ae09cfc0b55bbdbaa66dff68c768b4b47adc7c3565e635391538f328f3882734e99256dd0ee37d0230917bd77
SSDEEP

12288:jzY4JyS7t9CqZsFVhDvzuJSgfvZGnNoKeProTGYB4llcOI+1BDEAmD:mG1mhjzuJ9pONLePrHlmaD

Score

10^/10

remcos errai rat

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

errai

185.189.112.11:9625

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
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
struv
keylog_path
%AppData%
mouse_option
false
mutex
remcos_ybbjowldsb
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screens
screenshot_path
%AppData%
screenshot_time
1
startup_value
remcos
take_screenshot_option
false
take_screenshot_time
5

Signatures

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

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-1-5-21-177160434-2093019976-369403398-1000\Control Panel\International\Geo\Nation	cheque-000000005903.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3476 set thread context of 2768	3476	cheque-000000005903.exe	99

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
2304	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3476	cheque-000000005903.exe
3476	cheque-000000005903.exe
3476	cheque-000000005903.exe
3476	cheque-000000005903.exe
3476	cheque-000000005903.exe
3476	cheque-000000005903.exe
3476	cheque-000000005903.exe
2212	powershell.exe
2212	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3476	cheque-000000005903.exe
Token: SeDebugPrivilege	2212	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2768	cheque-000000005903.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3476 wrote to memory of 2212	3476	cheque-000000005903.exe	95
PID 3476 wrote to memory of 2212	3476	cheque-000000005903.exe	95
PID 3476 wrote to memory of 2212	3476	cheque-000000005903.exe	95
PID 3476 wrote to memory of 2304	3476	cheque-000000005903.exe	97
PID 3476 wrote to memory of 2304	3476	cheque-000000005903.exe	97
PID 3476 wrote to memory of 2304	3476	cheque-000000005903.exe	97
PID 3476 wrote to memory of 2768	3476	cheque-000000005903.exe	99
PID 3476 wrote to memory of 2768	3476	cheque-000000005903.exe	99
PID 3476 wrote to memory of 2768	3476	cheque-000000005903.exe	99
PID 3476 wrote to memory of 2768	3476	cheque-000000005903.exe	99
PID 3476 wrote to memory of 2768	3476	cheque-000000005903.exe	99
PID 3476 wrote to memory of 2768	3476	cheque-000000005903.exe	99
PID 3476 wrote to memory of 2768	3476	cheque-000000005903.exe	99
PID 3476 wrote to memory of 2768	3476	cheque-000000005903.exe	99
PID 3476 wrote to memory of 2768	3476	cheque-000000005903.exe	99

C:\Users\Admin\AppData\Local\Temp\cheque-000000005903.exe
"C:\Users\Admin\AppData\Local\Temp\cheque-000000005903.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3476
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\puwiddYokD.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2212
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\puwiddYokD" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4031.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2304
- C:\Users\Admin\AppData\Local\Temp\cheque-000000005903.exe
  "C:\Users\Admin\AppData\Local\Temp\cheque-000000005903.exe"
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:2768

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xgwj1g52.jzb.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp4031.tmp

Filesize
1KB

MD5
ff4d94b97c01e674a0e63d292d997fa2

SHA1
6927a855b0d0ebde33d3fc84de123b14672af637

SHA256
15277f517ef896df3071a927473b0af85841b3fc8126ded11b826ca02cef0bd3

SHA512
ba6990489e2cb7b1e4498732f7ae5dda15c0c8d8bd45998a1474a3c2b431a441f904b094b65b5a0e92c20f58c1763f691cd1231134f6ab57f6233296943d2107

Download Submit
memory/2212-18-0x0000000074B20000-0x00000000752D0000-memory.dmp

Filesize
7.7MB

Download
memory/2212-73-0x0000000074B20000-0x00000000752D0000-memory.dmp

Filesize
7.7MB

Download
memory/2212-68-0x0000000007100000-0x0000000007114000-memory.dmp

Filesize
80KB

Download
memory/2212-67-0x00000000070F0000-0x00000000070FE000-memory.dmp

Filesize
56KB

Download
memory/2212-66-0x00000000070A0000-0x00000000070B1000-memory.dmp

Filesize
68KB

Download
memory/2212-65-0x0000000007120000-0x00000000071B6000-memory.dmp

Filesize
600KB

Download
memory/2212-64-0x0000000006F10000-0x0000000006F1A000-memory.dmp

Filesize
40KB

Download
memory/2212-63-0x0000000006EA0000-0x0000000006EBA000-memory.dmp

Filesize
104KB

Download
memory/2212-62-0x00000000074E0000-0x0000000007B5A000-memory.dmp

Filesize
6.5MB

Download
memory/2212-61-0x0000000006D70000-0x0000000006E13000-memory.dmp

Filesize
652KB

Download
memory/2212-60-0x0000000006140000-0x000000000615E000-memory.dmp

Filesize
120KB

Download
memory/2212-70-0x00000000071E0000-0x00000000071E8000-memory.dmp

Filesize
32KB

Download
memory/2212-69-0x00000000071F0000-0x000000000720A000-memory.dmp

Filesize
104KB

Download
memory/2212-45-0x0000000005B90000-0x0000000005BAE000-memory.dmp

Filesize
120KB

Download
memory/2212-17-0x0000000002250000-0x0000000002286000-memory.dmp

Filesize
216KB

Download
memory/2212-19-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/2212-22-0x0000000004E70000-0x0000000005498000-memory.dmp

Filesize
6.2MB

Download
memory/2212-50-0x0000000070E10000-0x0000000070E5C000-memory.dmp

Filesize
304KB

Download
memory/2212-49-0x0000000006160000-0x0000000006192000-memory.dmp

Filesize
200KB

Download
memory/2212-48-0x000000007FA30000-0x000000007FA40000-memory.dmp

Filesize
64KB

Download
memory/2212-27-0x0000000004AA0000-0x0000000004AC2000-memory.dmp

Filesize
136KB

Download
memory/2212-47-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/2212-46-0x0000000005C30000-0x0000000005C7C000-memory.dmp

Filesize
304KB

Download
memory/2212-33-0x00000000054A0000-0x0000000005506000-memory.dmp

Filesize
408KB

Download
memory/2212-21-0x0000000002290000-0x00000000022A0000-memory.dmp

Filesize
64KB

Download
memory/2212-39-0x0000000005580000-0x00000000055E6000-memory.dmp

Filesize
408KB

Download
memory/2212-44-0x00000000056F0000-0x0000000005A44000-memory.dmp

Filesize
3.3MB

Download
memory/2768-32-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2768-23-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2768-75-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2768-29-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2768-26-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3476-9-0x00000000064A0000-0x00000000064AC000-memory.dmp

Filesize
48KB

Download
memory/3476-6-0x0000000006180000-0x000000000619E000-memory.dmp

Filesize
120KB

Download
memory/3476-11-0x0000000007B70000-0x0000000007BCA000-memory.dmp

Filesize
360KB

Download
memory/3476-10-0x00000000064B0000-0x00000000064C0000-memory.dmp

Filesize
64KB

Download
memory/3476-0-0x0000000074B20000-0x00000000752D0000-memory.dmp

Filesize
7.7MB

Download
memory/3476-8-0x0000000004EA0000-0x0000000004EB0000-memory.dmp

Filesize
64KB

Download
memory/3476-7-0x0000000074B20000-0x00000000752D0000-memory.dmp

Filesize
7.7MB

Download
memory/3476-12-0x000000000A2D0000-0x000000000A36C000-memory.dmp

Filesize
624KB

Download
memory/3476-5-0x0000000004CE0000-0x0000000004CEA000-memory.dmp

Filesize
40KB

Download
memory/3476-4-0x0000000004EA0000-0x0000000004EB0000-memory.dmp

Filesize
64KB

Download
memory/3476-3-0x0000000004D10000-0x0000000004DA2000-memory.dmp

Filesize
584KB

Download
memory/3476-2-0x00000000052C0000-0x0000000005864000-memory.dmp

Filesize
5.6MB

Download
memory/3476-1-0x0000000000260000-0x0000000000304000-memory.dmp

Filesize
656KB

Download
memory/3476-30-0x0000000074B20000-0x00000000752D0000-memory.dmp

Filesize
7.7MB

Download