remcos | 9618c4ca10c548db5e97be2bcff2995bd631c20135ba3cb99631d6554e50b7dc

General

Target

DHL AWB# 13700658 DOCS.exe
Size

1.0MB
MD5

4f7f4be9f7d4dce08243c683cde82441
SHA1

05ae46d21d6ace8e5c6202d1721f429b9077a6fc
SHA256

d82420c6174978cbfa6a7ece576ad2e5e3bc66324126298e46f5b1845b6a11b3
SHA512

ecb7848144cf58974e089f0ea12d2a37ccf425f0e028407cfdcc9e160af5c574d699e7bf19b3442f890e9635fd400d7ae077d4acac092b306984de024c339d3f
SSDEEP

24576:HrycfLAsNBbi6oRqh/Jlmi4oHU1Ca5YkC:HjfLAsNo62EhoC+YkC

Score

10^/10

remcos 54436 discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

54436

C2

jandupdate873.webredirect.org:45688

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
538-8Q7AZ1
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
Remcos family
remcos

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2748	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2908 set thread context of 1424	2908	DHL AWB# 13700658 DOCS.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 4 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	DHL AWB# 13700658 DOCS.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DHL AWB# 13700658 DOCS.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
2588	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2748	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2748	powershell.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2908 wrote to memory of 2748	2908	DHL AWB# 13700658 DOCS.exe	30
PID 2908 wrote to memory of 2748	2908	DHL AWB# 13700658 DOCS.exe	30
PID 2908 wrote to memory of 2748	2908	DHL AWB# 13700658 DOCS.exe	30
PID 2908 wrote to memory of 2748	2908	DHL AWB# 13700658 DOCS.exe	30
PID 2908 wrote to memory of 2588	2908	DHL AWB# 13700658 DOCS.exe	32
PID 2908 wrote to memory of 2588	2908	DHL AWB# 13700658 DOCS.exe	32
PID 2908 wrote to memory of 2588	2908	DHL AWB# 13700658 DOCS.exe	32
PID 2908 wrote to memory of 2588	2908	DHL AWB# 13700658 DOCS.exe	32
PID 2908 wrote to memory of 1424	2908	DHL AWB# 13700658 DOCS.exe	34
PID 2908 wrote to memory of 1424	2908	DHL AWB# 13700658 DOCS.exe	34
PID 2908 wrote to memory of 1424	2908	DHL AWB# 13700658 DOCS.exe	34
PID 2908 wrote to memory of 1424	2908	DHL AWB# 13700658 DOCS.exe	34
PID 2908 wrote to memory of 1424	2908	DHL AWB# 13700658 DOCS.exe	34
PID 2908 wrote to memory of 1424	2908	DHL AWB# 13700658 DOCS.exe	34
PID 2908 wrote to memory of 1424	2908	DHL AWB# 13700658 DOCS.exe	34
PID 2908 wrote to memory of 1424	2908	DHL AWB# 13700658 DOCS.exe	34
PID 2908 wrote to memory of 1424	2908	DHL AWB# 13700658 DOCS.exe	34
PID 2908 wrote to memory of 1424	2908	DHL AWB# 13700658 DOCS.exe	34
PID 2908 wrote to memory of 1424	2908	DHL AWB# 13700658 DOCS.exe	34
PID 2908 wrote to memory of 1424	2908	DHL AWB# 13700658 DOCS.exe	34
PID 2908 wrote to memory of 1424	2908	DHL AWB# 13700658 DOCS.exe	34

C:\Users\Admin\AppData\Local\Temp\DHL AWB# 13700658 DOCS.exe
"C:\Users\Admin\AppData\Local\Temp\DHL AWB# 13700658 DOCS.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2908
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\SwWvEWWGz.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2748
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\SwWvEWWGz" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAA82.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2588
- C:\Users\Admin\AppData\Local\Temp\DHL AWB# 13700658 DOCS.exe
  "C:\Users\Admin\AppData\Local\Temp\DHL AWB# 13700658 DOCS.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1424

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

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\Local\Temp\tmpAA82.tmp

Filesize
1KB

MD5
a382b0525e0aaf58940e1132bf835941

SHA1
1ff251d624a23ac8653d533470930ccce7178a97

SHA256
3fea16de1a4730a6f09272ac0d08a132bb8a5fd92fa2f87c346c344247c958bf

SHA512
b5902b6e9fbcc2c00de68d5504ff2829d9bd62e2761c9bb0ba80975ad4288320c75a2fdde89a4fb0dff4c0d964c7766e37bfd8df050f97bb56aca0c25ea15673

Download Submit
memory/1424-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1424-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1424-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1424-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1424-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1424-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1424-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1424-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1424-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1424-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1424-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1424-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1424-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1424-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1424-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1424-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1424-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1424-16-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1424-30-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1424-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1424-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1424-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1424-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1424-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2908-34-0x0000000074100000-0x00000000747EE000-memory.dmp

Filesize
6.9MB

Download
memory/2908-1-0x00000000012D0000-0x00000000013E0000-memory.dmp

Filesize
1.1MB

Download
memory/2908-2-0x0000000074100000-0x00000000747EE000-memory.dmp

Filesize
6.9MB

Download
memory/2908-6-0x000000000A420000-0x000000000A4E0000-memory.dmp

Filesize
768KB

Download
memory/2908-5-0x0000000074100000-0x00000000747EE000-memory.dmp

Filesize
6.9MB

Download
memory/2908-0-0x000000007410E000-0x000000007410F000-memory.dmp

Filesize
4KB

Download
memory/2908-4-0x000000007410E000-0x000000007410F000-memory.dmp

Filesize
4KB

Download
memory/2908-3-0x00000000005D0000-0x00000000005F6000-memory.dmp

Filesize
152KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads