remcos | f2aa0bef12799e23505d3589cb4c04feeb5e0af928d10f73144c1fefce3b6abb

General

Target

Purchase Order Inquiry_190123.exe
Size

7KB
MD5

1c72fb093ace75fffb093c6541ff4940
SHA1

7034c12131cc2e28fcf9235850a36b08e9983dce
SHA256

f00982603a693995cf32649df28ac390ce839638751f04d11517454466061785
SHA512

4d713c85e2b5a818e3f5db4c7b59a820bb309c911825670b540597c9faa9d931f5648d054e19a01a48f7c97bae6dfe67b02148fb3ad58ddafdd11bb06f8a59ed
SSDEEP

96:lTlsnKYgr+QLZCMqm18WQ2juY+wq+Df/8tEkajtR/zNt:lpQELZCMqmXjuZ+z8zaj7p

Score

10^/10

remcos 28282 persistence rat

Malware Config

Extracted

Family

remcos

Botnet

28282

C2

194.180.49.17:28282

Attributes

audio_folder
MicRecords
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
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
gqhwjekrltlu-TOU33Q
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

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

Processes:

Purchase Order Inquiry_190123.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	Purchase Order Inquiry_190123.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Purchase Order Inquiry_190123.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Eesibjdz = "\"C:\\Users\\Admin\\AppData\\Roaming\\Gngrey\\Eesibjdz.exe\""	Purchase Order Inquiry_190123.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Purchase Order Inquiry_190123.exe

description pid process target process

PID 3092 set thread context of 1864 3092 Purchase Order Inquiry_190123.exe Purchase Order Inquiry_190123.exe
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

Processes:

powershell.exe

pid process

4372 powershell.exe
4372 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Purchase Order Inquiry_190123.exepowershell.exe

description pid process

Token: SeDebugPrivilege 3092 Purchase Order Inquiry_190123.exe
Token: SeDebugPrivilege 4372 powershell.exe

description	pid	process	target process
PID 3092 set thread context of 1864	3092	Purchase Order Inquiry_190123.exe	Purchase Order Inquiry_190123.exe

pid	process
4372	powershell.exe
4372	powershell.exe

description	pid	process
Token: SeDebugPrivilege	3092	Purchase Order Inquiry_190123.exe
Token: SeDebugPrivilege	4372	powershell.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

Purchase Order Inquiry_190123.exe

C:\Users\Admin\AppData\Local\Temp\Purchase Order Inquiry_190123.exe
"C:\Users\Admin\AppData\Local\Temp\Purchase Order Inquiry_190123.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:3092
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4372
- C:\Users\Admin\AppData\Local\Temp\Purchase Order Inquiry_190123.exe
  "C:\Users\Admin\AppData\Local\Temp\Purchase Order Inquiry_190123.exe"
  2⤵
  PID:1864

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

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Downloads

memory/1864-149-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1864-148-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1864-147-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1864-146-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1864-145-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1864-144-0x0000000000000000-mapping.dmp

Download
memory/3092-142-0x0000000006330000-0x00000000063C2000-memory.dmp

Filesize
584KB

Download
memory/3092-133-0x0000000007080000-0x00000000070A2000-memory.dmp

Filesize
136KB

Download
memory/3092-132-0x0000000000F70000-0x0000000000F78000-memory.dmp

Filesize
32KB

Download
memory/3092-143-0x0000000008070000-0x0000000008614000-memory.dmp

Filesize
5.6MB

Download
memory/4372-136-0x0000000005720000-0x0000000005D48000-memory.dmp

Filesize
6.2MB

Download
memory/4372-141-0x0000000006930000-0x000000000694A000-memory.dmp

Filesize
104KB

Download
memory/4372-140-0x0000000007A80000-0x00000000080FA000-memory.dmp

Filesize
6.5MB

Download
memory/4372-139-0x0000000006440000-0x000000000645E000-memory.dmp

Filesize
120KB

Download
memory/4372-138-0x0000000005E30000-0x0000000005E96000-memory.dmp

Filesize
408KB

Download
memory/4372-137-0x0000000005D50000-0x0000000005DB6000-memory.dmp

Filesize
408KB

Download
memory/4372-135-0x0000000002E50000-0x0000000002E86000-memory.dmp

Filesize
216KB

Download
memory/4372-134-0x0000000000000000-mapping.dmp

Download

description	pid	process	target process
PID 3092 wrote to memory of 4372	3092	Purchase Order Inquiry_190123.exe	powershell.exe
PID 3092 wrote to memory of 4372	3092	Purchase Order Inquiry_190123.exe	powershell.exe
PID 3092 wrote to memory of 4372	3092	Purchase Order Inquiry_190123.exe	powershell.exe
PID 3092 wrote to memory of 1864	3092	Purchase Order Inquiry_190123.exe	Purchase Order Inquiry_190123.exe
PID 3092 wrote to memory of 1864	3092	Purchase Order Inquiry_190123.exe	Purchase Order Inquiry_190123.exe
PID 3092 wrote to memory of 1864	3092	Purchase Order Inquiry_190123.exe	Purchase Order Inquiry_190123.exe
PID 3092 wrote to memory of 1864	3092	Purchase Order Inquiry_190123.exe	Purchase Order Inquiry_190123.exe
PID 3092 wrote to memory of 1864	3092	Purchase Order Inquiry_190123.exe	Purchase Order Inquiry_190123.exe
PID 3092 wrote to memory of 1864	3092	Purchase Order Inquiry_190123.exe	Purchase Order Inquiry_190123.exe
PID 3092 wrote to memory of 1864	3092	Purchase Order Inquiry_190123.exe	Purchase Order Inquiry_190123.exe
PID 3092 wrote to memory of 1864	3092	Purchase Order Inquiry_190123.exe	Purchase Order Inquiry_190123.exe
PID 3092 wrote to memory of 1864	3092	Purchase Order Inquiry_190123.exe	Purchase Order Inquiry_190123.exe
PID 3092 wrote to memory of 1864	3092	Purchase Order Inquiry_190123.exe	Purchase Order Inquiry_190123.exe
PID 3092 wrote to memory of 1864	3092	Purchase Order Inquiry_190123.exe	Purchase Order Inquiry_190123.exe
PID 3092 wrote to memory of 1864	3092	Purchase Order Inquiry_190123.exe	Purchase Order Inquiry_190123.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads