remcos | 02dfbee0b56dd31315f9661286364a5575589577de2077423e59c7bed46bc4d7

Analysis

max time kernel
147s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
23/05/2024, 04:37

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General

Target
69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe
Size 435KB
Sample240523-e8wndsea5v
SHA256 02dfbee0b56dd31315f9661286364a5575589577de2077423e59c7bed46bc4d7
MD5 69bda55cf1a5f060d8d583646f986943
SHA1 6c46cc4216bf9e2ab963ced691b0e9bce6a359d6
SHA512 2db813ba399bb7068dc132404fb08d8dd48bae6045dbb7db7222044598b85133227c3269b35112c56692e998d1ff7b1b00ac9e697039b79a241cabbd555d94a4
SSDEEP 6144:6zYRHXOH+jso2yGB0bU0R+ZO6EzmzFlblw2:6zYRD4Izmzbb+
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

remcos gold farm rat

Malware Config

Extracted

Family

remcos

Version

1.9.9 Pro

Botnet

Gold Farm

fzsification.bounceme.net:9009

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
remcos.exe
copy_folder
remcos
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
false
install_path
%AppData%
keylog_crypt
false
keylog_file
log8498.bat
keylog_flag
false
keylog_folder
Windows Command Module
keylog_path
%AppData%
mouse_option
false
mutex
Null-8WJKBY
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
remcos
take_screenshot_option
true
take_screenshot_time
5
take_screenshot_title
coin;bitcoin;crypto;ethereum;litecoin;bitfinex;bittrex;coinbase;paypal;

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bird.exe.lnk	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
4804	svhost.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1116 set thread context of 4804	1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe	98

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

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1040	timeout.exe

NTFS ADS 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\Temp\Pidgin\bird.exe:Zone.Identifier	cmd.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe
1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe
1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe
1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe
1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe
1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe
1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe
1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe
1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe
1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe
1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe
1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe
1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe
1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe
1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe
1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4804	svhost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4804	svhost.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 1116 wrote to memory of 4452	1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe	95
PID 1116 wrote to memory of 4452	1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe	95
PID 1116 wrote to memory of 4452	1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe	95
PID 4452 wrote to memory of 3196	4452	cmd.exe	97
PID 4452 wrote to memory of 3196	4452	cmd.exe	97
PID 4452 wrote to memory of 3196	4452	cmd.exe	97
PID 1116 wrote to memory of 4804	1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe	98
PID 1116 wrote to memory of 4804	1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe	98
PID 1116 wrote to memory of 4804	1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe	98
PID 1116 wrote to memory of 4804	1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe	98
PID 1116 wrote to memory of 4804	1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe	98
PID 1116 wrote to memory of 4804	1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe	98
PID 1116 wrote to memory of 4804	1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe	98
PID 1116 wrote to memory of 4804	1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe	98
PID 1116 wrote to memory of 4804	1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe	98
PID 1116 wrote to memory of 4804	1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe	98
PID 1116 wrote to memory of 1496	1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe	99
PID 1116 wrote to memory of 1496	1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe	99
PID 1116 wrote to memory of 1496	1116	69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe	99
PID 1496 wrote to memory of 1040	1496	cmd.exe	101
PID 1496 wrote to memory of 1040	1496	cmd.exe	101
PID 1496 wrote to memory of 1040	1496	cmd.exe	101

C:\Users\Admin\AppData\Local\Temp\69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\69bda55cf1a5f060d8d583646f986943_JaffaCakes118.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1116
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - NTFS ADS
  - Suspicious use of WriteProcessMemory
  PID:4452
- - C:\Windows\SysWOW64\reg.exe
    reg add "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Windows" /v Load /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\Pidgin\bird.exe.lnk" /f
    3⤵
    PID:3196
- C:\Users\Admin\AppData\Local\Temp\svhost.exe
  "C:\Users\Admin\AppData\Local\Temp\svhost.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  PID:4804
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\Pidgin\bird.exe.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1496
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 300
    3⤵
    - Delays execution with timeout.exe
    PID:1040

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

bird.exe

Path C:\Users\Admin\AppData\Local\Temp\Pidgin\bird.exe
Size 435KB
SHA256 02dfbee0b56dd31315f9661286364a5575589577de2077423e59c7bed46bc4d7
MD5 69bda55cf1a5f060d8d583646f986943
SHA1 6c46cc4216bf9e2ab963ced691b0e9bce6a359d6
SHA512 2db813ba399bb7068dc132404fb08d8dd48bae6045dbb7db7222044598b85133227c3269b35112c56692e998d1ff7b1b00ac9e697039b79a241cabbd555d94a4
SSDEEP 6144:6zYRHXOH+jso2yGB0bU0R+ZO6EzmzFlblw2:6zYRD4Izmzbb+
MD5 SHA1 SHA512 SSDEEP

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bird.exe.bat

Path C:\Users\Admin\AppData\Local\Temp\Pidgin\bird.exe.bat
Size 203B
SHA256 f6c2c759ec4c3a3ead6a4fae5f9da83f9581939180447dc3ad78b5bc7ecf94ec
MD5 8924a4be6613e42b6f8065e9acfbe2e3
SHA1 ef1d5dedce26eb50f32ca3ebf5550f397aa5732f
SHA512 8f4f278852f7d50fa8ea9022997994d8f1971be1657f4a9c9c1163e7a61c0910e9b6224c0a27eea87500e6a91ae048d84b46141c0872d97649865fe984ee667c
MD5 SHA1 SHA512

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svhost.exe

Path C:\Users\Admin\AppData\Local\Temp\svhost.exe
Size 1.6MB
SHA256 e8b5da3394bbdd7868122ffd88d9d06afe31bd69d656857910d2f820c32d0efa
MD5 1c9ff7df71493896054a91bee0322ebf
SHA1 38f1c85965d58b910d8e8381b6b1099d5dfcbfe4
SHA512 aa0def62b663743e6c3c022182b35cff33cb9abf08453d5098f3c5d32b2a8b0cd1cc5de64b93e39680c1d1396fef1fd50b642ca3ea4ba1f6d1078321d96916ab
SSDEEP 24576:D2Jdi2osRvHJT8EZwpqy4JXxDsv6TRrgGdbG4VKMhyMvopZ:DMiQB8EZwmWv6TrGYXhyMvq
MD5 SHA1 SHA512 SSDEEP

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memory/1116-2-0x0000000075090000-0x0000000075641000-memory.dmp

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memory/1116-1-0x0000000075090000-0x0000000075641000-memory.dmp

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memory/1116-0-0x0000000075092000-0x0000000075093000-memory.dmp

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memory/1116-25-0x0000000075092000-0x0000000075093000-memory.dmp

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memory/1116-26-0x0000000075090000-0x0000000075641000-memory.dmp

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memory/1116-30-0x0000000075090000-0x0000000075641000-memory.dmp

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memory/4804-11-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/4804-19-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/4804-17-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/4804-20-0x0000000000400000-0x000000000041E000-memory.dmp

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