remcos | 45c871fa970cb78e5c1832eb19201659c3961a1c688697774ee947ad70dbc2a7

Analysis

max time kernel
148s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
27/09/2022, 02:49

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General

Target
b91fb7bbef1fe38b4f9e2b4315dc018c.exe
Size 6KB
Sample220927-da9xpacdb2
SHA256 45c871fa970cb78e5c1832eb19201659c3961a1c688697774ee947ad70dbc2a7
MD5 b91fb7bbef1fe38b4f9e2b4315dc018c
SHA1 17670f20a892713eee445c1d46f450765ca58e7f
SHA512 2a67653cc76578bd917216d72550bdff58d86be4ccf58af88d95f4e9144b9d238f741ef7846597440c091cc9c9eea20a55532f7a375891b375afc60060d2b194
SSDEEP 96:Ei6WXBXvOLseWYdY4ZY/8J6clhu96BzNt:Ei6EBXvOL3xJZY/8J6crA6D
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

remcos starmoneynew persistence rat

Malware Config

Extracted

Family

remcos

Botnet

StarMoneyNew

185.252.178.35:41900

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
Rmc-6RGOTF
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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	b91fb7bbef1fe38b4f9e2b4315dc018c.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-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Cloud = "\"C:\\Users\\Admin\\AppData\\Roaming\\Adobe\\Cloud.exe\""	b91fb7bbef1fe38b4f9e2b4315dc018c.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4408 set thread context of 2128	4408	b91fb7bbef1fe38b4f9e2b4315dc018c.exe	90

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
2776	powershell.exe
2776	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4408	b91fb7bbef1fe38b4f9e2b4315dc018c.exe
Token: SeDebugPrivilege	2776	powershell.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4408 wrote to memory of 2776	4408	b91fb7bbef1fe38b4f9e2b4315dc018c.exe	84
PID 4408 wrote to memory of 2776	4408	b91fb7bbef1fe38b4f9e2b4315dc018c.exe	84
PID 4408 wrote to memory of 2776	4408	b91fb7bbef1fe38b4f9e2b4315dc018c.exe	84
PID 4408 wrote to memory of 2128	4408	b91fb7bbef1fe38b4f9e2b4315dc018c.exe	90
PID 4408 wrote to memory of 2128	4408	b91fb7bbef1fe38b4f9e2b4315dc018c.exe	90
PID 4408 wrote to memory of 2128	4408	b91fb7bbef1fe38b4f9e2b4315dc018c.exe	90
PID 4408 wrote to memory of 2128	4408	b91fb7bbef1fe38b4f9e2b4315dc018c.exe	90
PID 4408 wrote to memory of 2128	4408	b91fb7bbef1fe38b4f9e2b4315dc018c.exe	90
PID 4408 wrote to memory of 2128	4408	b91fb7bbef1fe38b4f9e2b4315dc018c.exe	90
PID 4408 wrote to memory of 2128	4408	b91fb7bbef1fe38b4f9e2b4315dc018c.exe	90
PID 4408 wrote to memory of 2128	4408	b91fb7bbef1fe38b4f9e2b4315dc018c.exe	90
PID 4408 wrote to memory of 2128	4408	b91fb7bbef1fe38b4f9e2b4315dc018c.exe	90
PID 4408 wrote to memory of 2128	4408	b91fb7bbef1fe38b4f9e2b4315dc018c.exe	90
PID 4408 wrote to memory of 2128	4408	b91fb7bbef1fe38b4f9e2b4315dc018c.exe	90
PID 4408 wrote to memory of 2128	4408	b91fb7bbef1fe38b4f9e2b4315dc018c.exe	90

C:\Users\Admin\AppData\Local\Temp\b91fb7bbef1fe38b4f9e2b4315dc018c.exe
"C:\Users\Admin\AppData\Local\Temp\b91fb7bbef1fe38b4f9e2b4315dc018c.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:4408
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMwAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2776
- C:\Users\Admin\AppData\Local\Temp\b91fb7bbef1fe38b4f9e2b4315dc018c.exe
  C:\Users\Admin\AppData\Local\Temp\b91fb7bbef1fe38b4f9e2b4315dc018c.exe
  2⤵
  PID:2128

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2128-149-0x0000000000400000-0x000000000047F000-memory.dmp

Download

memory/2128-148-0x0000000000400000-0x000000000047F000-memory.dmp

Download

memory/2128-147-0x0000000000400000-0x000000000047F000-memory.dmp

Download

memory/2128-146-0x0000000000400000-0x000000000047F000-memory.dmp

Download

memory/2128-145-0x0000000000400000-0x000000000047F000-memory.dmp

Download

memory/2776-136-0x0000000005010000-0x0000000005638000-memory.dmp

Download

memory/2776-139-0x0000000005CE0000-0x0000000005CFE000-memory.dmp

Download

memory/2776-140-0x0000000007550000-0x0000000007BCA000-memory.dmp

Download

memory/2776-141-0x00000000061F0000-0x000000000620A000-memory.dmp

Download

memory/2776-138-0x00000000056B0000-0x0000000005716000-memory.dmp

Download

memory/2776-137-0x0000000005640000-0x00000000056A6000-memory.dmp

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memory/2776-135-0x00000000026F0000-0x0000000002726000-memory.dmp

Download

memory/4408-142-0x0000000006400000-0x0000000006492000-memory.dmp

Download

memory/4408-143-0x0000000006F40000-0x00000000074E4000-memory.dmp

Download

memory/4408-132-0x00000000005B0000-0x00000000005B8000-memory.dmp

Download

memory/4408-133-0x0000000005F80000-0x0000000005FA2000-memory.dmp

Download