remcos | 79861a10fcfaf967d54382b93d84ed03e5d5202cd3dfdcb599a535520360017e

Analysis

max time kernel
149s
max time network
157s
platform
windows10_x64
resource
win10v20210408
submitted
07/07/2021, 19:33

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General

Target
649e264be8f3e82828fb5e84466afedd.exe
Size 532KB
Sample210707-dbmffkjgee
SHA256 79861a10fcfaf967d54382b93d84ed03e5d5202cd3dfdcb599a535520360017e
MD5 649e264be8f3e82828fb5e84466afedd
SHA1 abaf0dfc2f573bddacef5c578e5c5d85f8217e1b
SHA512 f4b9afef7360fcecb3c760d3007a0e80aae151aaf4cc46198bd78518042a947ab757c17a056d398b345c1d10a6b7ba74c4050ec3f53660434e661fdd5ddb38ff
MD5 SHA1 SHA512

Score

10^/10

remcos new money persistence rat

Malware Config

Extracted

Family

remcos

Version

3.1.5 Pro

Botnet

new money

servr.killwhenabuse1.xyz:2040

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
notepads-S3FW92
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

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-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\notapad = "\"C:\\Users\\Admin\\AppData\\Local\\notapad.exe\""	649e264be8f3e82828fb5e84466afedd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 992 set thread context of 2220	992	649e264be8f3e82828fb5e84466afedd.exe	79

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings	649e264be8f3e82828fb5e84466afedd.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
992	649e264be8f3e82828fb5e84466afedd.exe
992	649e264be8f3e82828fb5e84466afedd.exe
636	powershell.exe
636	powershell.exe
636	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	992	649e264be8f3e82828fb5e84466afedd.exe
Token: SeDebugPrivilege	636	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2220	649e264be8f3e82828fb5e84466afedd.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 992 wrote to memory of 1156	992	649e264be8f3e82828fb5e84466afedd.exe	78
PID 992 wrote to memory of 1156	992	649e264be8f3e82828fb5e84466afedd.exe	78
PID 992 wrote to memory of 1156	992	649e264be8f3e82828fb5e84466afedd.exe	78
PID 992 wrote to memory of 2220	992	649e264be8f3e82828fb5e84466afedd.exe	79
PID 992 wrote to memory of 2220	992	649e264be8f3e82828fb5e84466afedd.exe	79
PID 992 wrote to memory of 2220	992	649e264be8f3e82828fb5e84466afedd.exe	79
PID 992 wrote to memory of 2220	992	649e264be8f3e82828fb5e84466afedd.exe	79
PID 992 wrote to memory of 2220	992	649e264be8f3e82828fb5e84466afedd.exe	79
PID 992 wrote to memory of 2220	992	649e264be8f3e82828fb5e84466afedd.exe	79
PID 992 wrote to memory of 2220	992	649e264be8f3e82828fb5e84466afedd.exe	79
PID 992 wrote to memory of 2220	992	649e264be8f3e82828fb5e84466afedd.exe	79
PID 992 wrote to memory of 2220	992	649e264be8f3e82828fb5e84466afedd.exe	79
PID 992 wrote to memory of 2220	992	649e264be8f3e82828fb5e84466afedd.exe	79
PID 992 wrote to memory of 2220	992	649e264be8f3e82828fb5e84466afedd.exe	79
PID 992 wrote to memory of 2220	992	649e264be8f3e82828fb5e84466afedd.exe	79
PID 1156 wrote to memory of 636	1156	WScript.exe	80
PID 1156 wrote to memory of 636	1156	WScript.exe	80
PID 1156 wrote to memory of 636	1156	WScript.exe	80

C:\Users\Admin\AppData\Local\Temp\649e264be8f3e82828fb5e84466afedd.exe
"C:\Users\Admin\AppData\Local\Temp\649e264be8f3e82828fb5e84466afedd.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:992
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\_Qrzabzjhyodxfcfneiokefgs.vbs"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1156
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Set-MpPreference -ExclusionPath C:\,'C:\Users\Admin\AppData\Local\notapad.exe'
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:636
- C:\Users\Admin\AppData\Local\Temp\649e264be8f3e82828fb5e84466afedd.exe
  C:\Users\Admin\AppData\Local\Temp\649e264be8f3e82828fb5e84466afedd.exe
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:2220

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/636-145-0x0000000007B00000-0x0000000007B01000-memory.dmp

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memory/636-144-0x0000000007BA0000-0x0000000007BA1000-memory.dmp

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memory/636-172-0x0000000006C73000-0x0000000006C74000-memory.dmp

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memory/636-171-0x000000007F2D0000-0x000000007F2D1000-memory.dmp

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memory/636-168-0x00000000094F0000-0x00000000094F1000-memory.dmp

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memory/636-167-0x0000000009330000-0x0000000009331000-memory.dmp

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memory/636-162-0x00000000091D0000-0x00000000091D1000-memory.dmp

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memory/636-155-0x00000000091F0000-0x0000000009223000-memory.dmp

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memory/636-146-0x0000000007F90000-0x0000000007F91000-memory.dmp

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memory/636-136-0x0000000006AC0000-0x0000000006AC1000-memory.dmp

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memory/636-143-0x0000000007B30000-0x0000000007B31000-memory.dmp

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memory/636-142-0x0000000007230000-0x0000000007231000-memory.dmp

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memory/636-141-0x0000000007190000-0x0000000007191000-memory.dmp

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memory/636-137-0x00000000072B0000-0x00000000072B1000-memory.dmp

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memory/636-139-0x0000000006C70000-0x0000000006C71000-memory.dmp

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memory/636-140-0x0000000006C72000-0x0000000006C73000-memory.dmp

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memory/992-114-0x0000000000090000-0x0000000000091000-memory.dmp

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memory/992-119-0x0000000004A90000-0x0000000004A91000-memory.dmp

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memory/992-118-0x0000000004A30000-0x0000000004F2E000-memory.dmp

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memory/992-120-0x0000000004A30000-0x0000000004F2E000-memory.dmp

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memory/992-116-0x0000000004F30000-0x0000000004F31000-memory.dmp

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memory/992-121-0x00000000064B0000-0x00000000064B1000-memory.dmp

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memory/992-123-0x0000000006610000-0x0000000006611000-memory.dmp

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memory/992-122-0x0000000006530000-0x00000000065A6000-memory.dmp

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memory/992-117-0x0000000004AD0000-0x0000000004AD1000-memory.dmp

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memory/992-128-0x0000000006FC0000-0x0000000007025000-memory.dmp

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memory/2220-138-0x0000000000400000-0x0000000000479000-memory.dmp

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memory/2220-131-0x0000000000400000-0x0000000000479000-memory.dmp

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