remcos | e9062b389f195ee7e6069dc65455ff755d58e89879c16a853dd5095ba290d8dd

General

Target

SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe
Size

830KB
MD5

36e01a35015bb0f32f6e488aaaab5e12
SHA1

65cd21c6e6203e6d07e95a6a77124286d43cbbbf
SHA256

0a9f29a917636cc7f9a8c087046d5712e2c23ef103bce73a1f56d913336728d5
SHA512

4ac48c95f0e30b66deb37d8a2d432eb0be396dc7af7436fa4f916812c9dd3d365d314f3f0dad82ae196546001d96d4495107b6448820d65111d28244a49cf2d4
SSDEEP

24576:GJ+Jkfw1F4ArlMPWRcXBJN6G3xxmYGyr:GA6O4ArlMuSgGhxay

Score

10^/10

remcos grace-log discovery execution rat

Malware Config

Extracted

Family

remcos

Version

3.0.1 Pro

Botnet

grace-log

C2

103.114.107.184:20903

Attributes

audio_folder
MicRecords
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
chrome.exe
copy_folder
chrome
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
chrome
keylog_path
%AppData%
mouse_option
false
mutex
chrome-HJWT0Z
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
chrome
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
Remcos family
remcos

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2820 set thread context of 2896	2820	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	32

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2480	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 3 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	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2480	Powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2480	Powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2896	InstallUtil.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2820 wrote to memory of 2480	2820	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	30
PID 2820 wrote to memory of 2480	2820	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	30
PID 2820 wrote to memory of 2480	2820	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	30
PID 2820 wrote to memory of 2480	2820	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	30
PID 2820 wrote to memory of 2896	2820	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	32
PID 2820 wrote to memory of 2896	2820	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	32
PID 2820 wrote to memory of 2896	2820	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	32
PID 2820 wrote to memory of 2896	2820	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	32
PID 2820 wrote to memory of 2896	2820	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	32
PID 2820 wrote to memory of 2896	2820	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	32
PID 2820 wrote to memory of 2896	2820	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	32
PID 2820 wrote to memory of 2896	2820	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	32
PID 2820 wrote to memory of 2896	2820	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	32
PID 2820 wrote to memory of 2896	2820	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	32
PID 2820 wrote to memory of 2896	2820	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	32
PID 2820 wrote to memory of 2896	2820	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	32
PID 2820 wrote to memory of 2896	2820	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	32
PID 2820 wrote to memory of 2896	2820	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	32
PID 2820 wrote to memory of 2896	2820	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	32
PID 2820 wrote to memory of 2896	2820	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	32

C:\Users\Admin\AppData\Local\Temp\SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe
"C:\Users\Admin\AppData\Local\Temp\SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2820
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
  "Powershell.exe" -ExecutionPolicy Bypass -command Copy-Item 'C:\Users\Admin\AppData\Local\Temp\SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\I$s#$lT3ssl.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2480
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2896

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

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
74B

MD5
229a82ad541e8fa55de84c3f75151961

SHA1
f61caf16f4610ff9ca75d39c97a44dffb00ea017

SHA256
74ff6887a8fe1e677cd0dd873f5493ae325253e0c599c776ca31c95f90ab9cee

SHA512
9663d1aa65d1800af8abb255473279aea1ddf78e441cd4272f332aa510b7a0f2cc52d729651168b9cf36e7b579b8c861718376356ef8cf1435befb8a70d98f5e

Download Submit
memory/2480-11-0x0000000070760000-0x0000000070D0B000-memory.dmp

Filesize
5.7MB

Download
memory/2480-6-0x0000000070761000-0x0000000070762000-memory.dmp

Filesize
4KB

Download
memory/2480-7-0x0000000070760000-0x0000000070D0B000-memory.dmp

Filesize
5.7MB

Download
memory/2480-8-0x0000000070760000-0x0000000070D0B000-memory.dmp

Filesize
5.7MB

Download
memory/2480-10-0x0000000070760000-0x0000000070D0B000-memory.dmp

Filesize
5.7MB

Download
memory/2480-36-0x0000000070760000-0x0000000070D0B000-memory.dmp

Filesize
5.7MB

Download
memory/2820-2-0x00000000006E0000-0x000000000076C000-memory.dmp

Filesize
560KB

Download
memory/2820-3-0x0000000074D40000-0x000000007542E000-memory.dmp

Filesize
6.9MB

Download
memory/2820-9-0x0000000000210000-0x0000000000226000-memory.dmp

Filesize
88KB

Download
memory/2820-0-0x0000000074D4E000-0x0000000074D4F000-memory.dmp

Filesize
4KB

Download
memory/2820-1-0x0000000000B60000-0x0000000000C36000-memory.dmp

Filesize
856KB

Download
memory/2820-37-0x0000000074D40000-0x000000007542E000-memory.dmp

Filesize
6.9MB

Download
memory/2820-35-0x0000000074D4E000-0x0000000074D4F000-memory.dmp

Filesize
4KB

Download
memory/2896-29-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2896-32-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2896-18-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2896-16-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2896-14-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2896-25-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2896-17-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2896-20-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2896-30-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2896-34-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2896-24-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2896-27-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2896-22-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2896-39-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2896-13-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download

Analysis

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