remcos | dc635fd5919c6fa88ef25ba495002828d58c4b6f447330f1af0b0bece5f3d3bd

General

Target

SecuriteInfo.com.Win32.DropperX-gen.24977.8680.exe
Size

1.0MB
MD5

42e01d68d3fdd2bd49abd080cc223e97
SHA1

ea3ba6e45eba405e391d9e223fdbd52e5a4b3e70
SHA256

dc635fd5919c6fa88ef25ba495002828d58c4b6f447330f1af0b0bece5f3d3bd
SHA512

2ec2b67716e807249fa0b2ff5948a3c1661513ba07dd02a7ea51f4426ad2abd2404a1ce2821ac95b31ca1dc44d9211740ca4b303761be844469da5f809bde2e3
SSDEEP

24576:vz3Z5kYsnLyRqspMrYQ+bJHWCTBxLuL3OHGxHAS:rJ5kYCWIsY2bwCTBJuL3EuR

Score

10^/10

remcos sam ogb persistence rat

Malware Config

Extracted

Family

remcos

Version

3.1.5 Pro

Botnet

SAM OGB

C2

217.64.127.195:52651

127.0.0.1:52651

10.5.247.128:52651

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
Remcos-CAA1IY
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
notepad;solitaire;

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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	SecuriteInfo.com.Win32.DropperX-gen.24977.8680.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Erbonoxoqa = "\"C:\\Users\\Admin\\AppData\\Roaming\\Guntxq\\Erbonoxoqa.exe\""	SecuriteInfo.com.Win32.DropperX-gen.24977.8680.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4004 set thread context of 4924	4004	SecuriteInfo.com.Win32.DropperX-gen.24977.8680.exe	88

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1484	powershell.exe
1484	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1484	powershell.exe
Token: SeDebugPrivilege	4004	SecuriteInfo.com.Win32.DropperX-gen.24977.8680.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4004 wrote to memory of 1484	4004	SecuriteInfo.com.Win32.DropperX-gen.24977.8680.exe	80
PID 4004 wrote to memory of 1484	4004	SecuriteInfo.com.Win32.DropperX-gen.24977.8680.exe	80
PID 4004 wrote to memory of 1484	4004	SecuriteInfo.com.Win32.DropperX-gen.24977.8680.exe	80
PID 4004 wrote to memory of 4924	4004	SecuriteInfo.com.Win32.DropperX-gen.24977.8680.exe	88
PID 4004 wrote to memory of 4924	4004	SecuriteInfo.com.Win32.DropperX-gen.24977.8680.exe	88
PID 4004 wrote to memory of 4924	4004	SecuriteInfo.com.Win32.DropperX-gen.24977.8680.exe	88
PID 4004 wrote to memory of 4924	4004	SecuriteInfo.com.Win32.DropperX-gen.24977.8680.exe	88
PID 4004 wrote to memory of 4924	4004	SecuriteInfo.com.Win32.DropperX-gen.24977.8680.exe	88
PID 4004 wrote to memory of 4924	4004	SecuriteInfo.com.Win32.DropperX-gen.24977.8680.exe	88
PID 4004 wrote to memory of 4924	4004	SecuriteInfo.com.Win32.DropperX-gen.24977.8680.exe	88
PID 4004 wrote to memory of 4924	4004	SecuriteInfo.com.Win32.DropperX-gen.24977.8680.exe	88
PID 4004 wrote to memory of 4924	4004	SecuriteInfo.com.Win32.DropperX-gen.24977.8680.exe	88
PID 4004 wrote to memory of 4924	4004	SecuriteInfo.com.Win32.DropperX-gen.24977.8680.exe	88
PID 4004 wrote to memory of 4924	4004	SecuriteInfo.com.Win32.DropperX-gen.24977.8680.exe	88
PID 4004 wrote to memory of 4924	4004	SecuriteInfo.com.Win32.DropperX-gen.24977.8680.exe	88

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.DropperX-gen.24977.8680.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.DropperX-gen.24977.8680.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4004
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMQAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1484
- C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.DropperX-gen.24977.8680.exe
  C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.DropperX-gen.24977.8680.exe
  2⤵
  PID:4924

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1484-140-0x0000000004810000-0x0000000004846000-memory.dmp

Filesize
216KB

Download
memory/1484-146-0x00000000062D0000-0x00000000062EA000-memory.dmp

Filesize
104KB

Download
memory/1484-145-0x0000000007410000-0x0000000007A8A000-memory.dmp

Filesize
6.5MB

Download
memory/1484-144-0x0000000005DD0000-0x0000000005DEE000-memory.dmp

Filesize
120KB

Download
memory/1484-143-0x0000000005780000-0x00000000057E6000-memory.dmp

Filesize
408KB

Download
memory/1484-142-0x00000000055E0000-0x0000000005646000-memory.dmp

Filesize
408KB

Download
memory/1484-141-0x0000000004FB0000-0x00000000055D8000-memory.dmp

Filesize
6.2MB

Download
memory/1484-139-0x0000000000000000-mapping.dmp

Download
memory/4004-137-0x0000000005750000-0x0000000005802000-memory.dmp

Filesize
712KB

Download
memory/4004-138-0x0000000005C50000-0x0000000005C72000-memory.dmp

Filesize
136KB

Download
memory/4004-132-0x0000000000120000-0x000000000022C000-memory.dmp

Filesize
1.0MB

Download
memory/4004-136-0x0000000004F40000-0x0000000004F90000-memory.dmp

Filesize
320KB

Download
memory/4004-135-0x0000000004AC0000-0x0000000004ACA000-memory.dmp

Filesize
40KB

Download
memory/4004-134-0x0000000004B30000-0x0000000004BC2000-memory.dmp

Filesize
584KB

Download
memory/4004-133-0x00000000050E0000-0x0000000005684000-memory.dmp

Filesize
5.6MB

Download
memory/4924-147-0x0000000000000000-mapping.dmp

Download
memory/4924-148-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/4924-149-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/4924-150-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/4924-151-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download

Analysis

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