remcos | f00982603a693995cf32649df28ac390ce839638751f04d11517454466061785

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\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

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\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

description	pid	Process	procid_target
PID 4800 set thread context of 4544	4800	Purchase Order Inquiry_190123.exe	91

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 6 IoCs

pid	Process
3860	powershell.exe
3860	powershell.exe
4800	Purchase Order Inquiry_190123.exe
4800	Purchase Order Inquiry_190123.exe
4800	Purchase Order Inquiry_190123.exe
4800	Purchase Order Inquiry_190123.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4800	Purchase Order Inquiry_190123.exe
Token: SeDebugPrivilege	3860	powershell.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 4800 wrote to memory of 3860	4800	Purchase Order Inquiry_190123.exe	81
PID 4800 wrote to memory of 3860	4800	Purchase Order Inquiry_190123.exe	81
PID 4800 wrote to memory of 3860	4800	Purchase Order Inquiry_190123.exe	81
PID 4800 wrote to memory of 3624	4800	Purchase Order Inquiry_190123.exe	89
PID 4800 wrote to memory of 3624	4800	Purchase Order Inquiry_190123.exe	89
PID 4800 wrote to memory of 3624	4800	Purchase Order Inquiry_190123.exe	89
PID 4800 wrote to memory of 4556	4800	Purchase Order Inquiry_190123.exe	90
PID 4800 wrote to memory of 4556	4800	Purchase Order Inquiry_190123.exe	90
PID 4800 wrote to memory of 4556	4800	Purchase Order Inquiry_190123.exe	90
PID 4800 wrote to memory of 4544	4800	Purchase Order Inquiry_190123.exe	91
PID 4800 wrote to memory of 4544	4800	Purchase Order Inquiry_190123.exe	91
PID 4800 wrote to memory of 4544	4800	Purchase Order Inquiry_190123.exe	91
PID 4800 wrote to memory of 4544	4800	Purchase Order Inquiry_190123.exe	91
PID 4800 wrote to memory of 4544	4800	Purchase Order Inquiry_190123.exe	91
PID 4800 wrote to memory of 4544	4800	Purchase Order Inquiry_190123.exe	91
PID 4800 wrote to memory of 4544	4800	Purchase Order Inquiry_190123.exe	91
PID 4800 wrote to memory of 4544	4800	Purchase Order Inquiry_190123.exe	91
PID 4800 wrote to memory of 4544	4800	Purchase Order Inquiry_190123.exe	91
PID 4800 wrote to memory of 4544	4800	Purchase Order Inquiry_190123.exe	91
PID 4800 wrote to memory of 4544	4800	Purchase Order Inquiry_190123.exe	91
PID 4800 wrote to memory of 4544	4800	Purchase Order Inquiry_190123.exe	91

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 behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4800
- 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:3860
- C:\Users\Admin\AppData\Local\Temp\Purchase Order Inquiry_190123.exe
  "C:\Users\Admin\AppData\Local\Temp\Purchase Order Inquiry_190123.exe"
  2⤵
  PID:3624
- C:\Users\Admin\AppData\Local\Temp\Purchase Order Inquiry_190123.exe
  "C:\Users\Admin\AppData\Local\Temp\Purchase Order Inquiry_190123.exe"
  2⤵
  PID:4556
- C:\Users\Admin\AppData\Local\Temp\Purchase Order Inquiry_190123.exe
  "C:\Users\Admin\AppData\Local\Temp\Purchase Order Inquiry_190123.exe"
  2⤵
  PID:4544

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/3860-141-0x0000000006750000-0x000000000676A000-memory.dmp

Filesize
104KB

Download
memory/3860-135-0x0000000004C70000-0x0000000004CA6000-memory.dmp

Filesize
216KB

Download
memory/3860-136-0x0000000005300000-0x0000000005928000-memory.dmp

Filesize
6.2MB

Download
memory/3860-137-0x0000000005A50000-0x0000000005AB6000-memory.dmp

Filesize
408KB

Download
memory/3860-138-0x0000000005AC0000-0x0000000005B26000-memory.dmp

Filesize
408KB

Download
memory/3860-139-0x0000000006240000-0x000000000625E000-memory.dmp

Filesize
120KB

Download
memory/3860-140-0x0000000007880000-0x0000000007EFA000-memory.dmp

Filesize
6.5MB

Download
memory/4544-147-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4544-148-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4544-149-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4544-150-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4544-151-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4800-142-0x00000000053C0000-0x0000000005452000-memory.dmp

Filesize
584KB

Download
memory/4800-143-0x0000000006F90000-0x0000000007534000-memory.dmp

Filesize
5.6MB

Download
memory/4800-133-0x0000000005FD0000-0x0000000005FF2000-memory.dmp

Filesize
136KB

Download
memory/4800-132-0x0000000000010000-0x0000000000018000-memory.dmp

Filesize
32KB

Download

Analysis

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