remcos | 943df694d18c31eba3477271af8be3ba54e003afd623d162705bf203ef0ab6ee

General

Target

d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe
Size

868KB
MD5

d4fa2d3197da723c8030147297b9e904
SHA1

1623b9fac1f027f328a4a567fec7f9517e8a9b5b
SHA256

943df694d18c31eba3477271af8be3ba54e003afd623d162705bf203ef0ab6ee
SHA512

24649db62837626affd681f7b20fce823dacd45d6207ffb7e100d61c65385bc69eb0fd412715129e1237160a849fb8ec566ce7b760174334e85715fa10ea0911
SSDEEP

12288:d5aTUxjQBT/48bXaGJdB38Krf7zpurlZFcHTn3mOJurGrel9VroDij:d53x0BTZbBVfXpQHETn3mO4ueJHj

Score

10^/10

remcos reed discovery rat

Malware Config

Extracted

Family

remcos

Version

3.2.0 Pro

Botnet

Reed

C2

ezfax2021.home-webserver.de:24133

Attributes

audio_folder
MicRecords
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
iuis.exe
copy_folder
oiujhy
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
false
install_path
%AppData%
keylog_crypt
true
keylog_file
uhyg.dat
keylog_flag
false
keylog_folder
juhg
keylog_path
%AppData%
mouse_option
false
mutex
iuyhg-XOY14N
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
oiu
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
Remcos family
remcos
Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2100 set thread context of 2488	2100	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	34

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2764	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2100	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe
2100	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe
2100	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe
2100	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2100	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2488	vbc.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2100 wrote to memory of 2764	2100	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	31
PID 2100 wrote to memory of 2764	2100	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	31
PID 2100 wrote to memory of 2764	2100	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	31
PID 2100 wrote to memory of 2764	2100	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	31
PID 2100 wrote to memory of 2856	2100	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	33
PID 2100 wrote to memory of 2856	2100	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	33
PID 2100 wrote to memory of 2856	2100	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	33
PID 2100 wrote to memory of 2856	2100	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	33
PID 2100 wrote to memory of 2488	2100	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	34
PID 2100 wrote to memory of 2488	2100	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	34
PID 2100 wrote to memory of 2488	2100	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	34
PID 2100 wrote to memory of 2488	2100	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	34
PID 2100 wrote to memory of 2488	2100	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	34
PID 2100 wrote to memory of 2488	2100	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	34
PID 2100 wrote to memory of 2488	2100	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	34
PID 2100 wrote to memory of 2488	2100	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	34
PID 2100 wrote to memory of 2488	2100	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	34
PID 2100 wrote to memory of 2488	2100	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	34
PID 2100 wrote to memory of 2488	2100	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	34
PID 2100 wrote to memory of 2488	2100	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	34
PID 2100 wrote to memory of 2488	2100	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	34

C:\Users\Admin\AppData\Local\Temp\d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2100
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\smmtJKPRG" /XML "C:\Users\Admin\AppData\Local\Temp\tmp36D9.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2764
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  PID:2856
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2488

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\juhg\uhyg.dat

Filesize
148B

MD5
3cd8107a441eaed348933b2266e33b6b

SHA1
23d7d68cdb5aed70916cfcae08a89c7bc2c288c0

SHA256
2a3ab11791092fc0061893c7e608436784f7ebdb3341f9960977d13e3e14a56a

SHA512
3696e95b7aa2b0f096433fe78888681e6a93551f09921689a3503fd669154f47f7cb69644396901606330613a4bd2982bfdae8c4526849fd9be9171871a6e3cc

Download Submit
memory/2100-0-0x0000000074B2E000-0x0000000074B2F000-memory.dmp

Filesize
4KB

Download
memory/2100-1-0x0000000001340000-0x000000000141E000-memory.dmp

Filesize
888KB

Download
memory/2100-2-0x0000000074B20000-0x000000007520E000-memory.dmp

Filesize
6.9MB

Download
memory/2100-3-0x00000000004A0000-0x00000000004AC000-memory.dmp

Filesize
48KB

Download
memory/2100-4-0x0000000074B2E000-0x0000000074B2F000-memory.dmp

Filesize
4KB

Download
memory/2100-5-0x0000000074B20000-0x000000007520E000-memory.dmp

Filesize
6.9MB

Download
memory/2100-6-0x0000000005840000-0x00000000058EE000-memory.dmp

Filesize
696KB

Download
memory/2100-7-0x0000000005500000-0x000000000557A000-memory.dmp

Filesize
488KB

Download
memory/2100-34-0x0000000074B20000-0x000000007520E000-memory.dmp

Filesize
6.9MB

Download
memory/2488-29-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2488-19-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2488-32-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2488-28-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2488-25-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2488-24-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2488-22-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2488-33-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2488-20-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2488-17-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2488-15-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2488-21-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2488-26-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2488-38-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2488-13-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads