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 3808 set thread context of 3588	3808	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	87

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
4816	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

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000_Classes\Local Settings	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4816	Powershell.exe
3808	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe
3808	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe
4816	Powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4816	Powershell.exe
Token: SeDebugPrivilege	3808	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3588	InstallUtil.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 3808 wrote to memory of 4816	3808	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	84
PID 3808 wrote to memory of 4816	3808	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	84
PID 3808 wrote to memory of 4816	3808	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	84
PID 3808 wrote to memory of 4936	3808	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	86
PID 3808 wrote to memory of 4936	3808	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	86
PID 3808 wrote to memory of 4936	3808	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	86
PID 3808 wrote to memory of 3588	3808	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	87
PID 3808 wrote to memory of 3588	3808	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	87
PID 3808 wrote to memory of 3588	3808	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	87
PID 3808 wrote to memory of 3588	3808	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	87
PID 3808 wrote to memory of 3588	3808	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	87
PID 3808 wrote to memory of 3588	3808	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	87
PID 3808 wrote to memory of 3588	3808	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	87
PID 3808 wrote to memory of 3588	3808	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	87
PID 3808 wrote to memory of 3588	3808	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	87
PID 3808 wrote to memory of 3588	3808	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	87
PID 3808 wrote to memory of 3588	3808	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	87
PID 3808 wrote to memory of 3588	3808	SKBMT_ Bank Transfer Notification 9880B904_ PDF.exe	87

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
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3808
- 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:4816
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
  2⤵
  PID:4936
- 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:3588

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:1940

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\Local\Temp\__PSScriptPolicyTest_yk4udif2.isq.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
74B

MD5
6cec3840691f6b707d08a3d7b3ef6b1e

SHA1
e9a922568411b625cce1794538077bde7a5aeac1

SHA256
af4189d48c94d1bb32c39821f5a97ce0d2945453f6a9cad01c39836e7c4d03ba

SHA512
03e8b65ff38528767e8f3384f38eaa034dadfea01a3ab985595ac42f4b4df41839b416ed127236bffc5b7ae6d4db4cbbc5c407ffdda183614524c1ef7ab29f62

Download Submit
memory/3588-27-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3588-26-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3588-25-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3588-31-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3588-28-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3588-43-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3808-0-0x000000007503E000-0x000000007503F000-memory.dmp

Filesize
4KB

Download
memory/3808-45-0x00000000050F0000-0x00000000050FA000-memory.dmp

Filesize
40KB

Download
memory/3808-6-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/3808-41-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/3808-40-0x000000007503E000-0x000000007503F000-memory.dmp

Filesize
4KB

Download
memory/3808-5-0x0000000005100000-0x000000000519C000-memory.dmp

Filesize
624KB

Download
memory/3808-4-0x0000000004F90000-0x000000000501C000-memory.dmp

Filesize
560KB

Download
memory/3808-3-0x0000000004EF0000-0x0000000004F82000-memory.dmp

Filesize
584KB

Download
memory/3808-24-0x0000000004E10000-0x0000000004E26000-memory.dmp

Filesize
88KB

Download
memory/3808-2-0x0000000005400000-0x00000000059A4000-memory.dmp

Filesize
5.6MB

Download
memory/3808-1-0x00000000003C0000-0x0000000000496000-memory.dmp

Filesize
856KB

Download
memory/4816-8-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/4816-23-0x0000000005DB0000-0x0000000006104000-memory.dmp

Filesize
3.3MB

Download
memory/4816-13-0x0000000005D40000-0x0000000005DA6000-memory.dmp

Filesize
408KB

Download
memory/4816-32-0x0000000006330000-0x000000000634E000-memory.dmp

Filesize
120KB

Download
memory/4816-33-0x0000000006360000-0x00000000063AC000-memory.dmp

Filesize
304KB

Download
memory/4816-34-0x00000000075A0000-0x0000000007636000-memory.dmp

Filesize
600KB

Download
memory/4816-35-0x0000000006810000-0x000000000682A000-memory.dmp

Filesize
104KB

Download
memory/4816-36-0x0000000006890000-0x00000000068B2000-memory.dmp

Filesize
136KB

Download
memory/4816-39-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/4816-12-0x0000000005C60000-0x0000000005CC6000-memory.dmp

Filesize
408KB

Download
memory/4816-11-0x0000000005490000-0x00000000054B2000-memory.dmp

Filesize
136KB

Download
memory/4816-10-0x0000000075030000-0x00000000757E0000-memory.dmp

Filesize
7.7MB

Download
memory/4816-9-0x0000000005500000-0x0000000005B28000-memory.dmp

Filesize
6.2MB

Download
memory/4816-7-0x0000000004D80000-0x0000000004DB6000-memory.dmp

Filesize
216KB

Download

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