remcos | cb999b03f075385459346622f17dbeec34ee53a158c5e5fd01bad5d8e9461e9d

General

Target

EU_SANCTION_LETTER-05052021.exe
Size

979KB
MD5

3f42de1bd40b5621c7d580d8445bc0a7
SHA1

433bed058c0b2d7cf2374f67b7657388905f415c
SHA256

cb999b03f075385459346622f17dbeec34ee53a158c5e5fd01bad5d8e9461e9d
SHA512

c1bdcccfdaac456f7d07d7787f069324cb14aef487ab20a5e543456f47b7634934b3acb98b7342061c5153b84d93759b8920ee5135d92c6d43fc910dbb809d0e

Score

10^/10

remcos rat

Malware Config

Extracted

Family

remcos

C2

www.swqrn.com:16108

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064
Suspicious use of SetThreadContext 1 IoCs

Processes:

EU_SANCTION_LETTER-05052021.exe

description pid process target process

PID 1080 set thread context of 316 1080 EU_SANCTION_LETTER-05052021.exe vbc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1300 schtasks.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

vbc.exe

pid process

316 vbc.exe

description	pid	process	target process
PID 1080 set thread context of 316	1080	EU_SANCTION_LETTER-05052021.exe	vbc.exe

pid	process
1300	schtasks.exe

pid	process
316	vbc.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

EU_SANCTION_LETTER-05052021.exe

description	pid	process	target process
PID 1080 wrote to memory of 1300	1080	EU_SANCTION_LETTER-05052021.exe	schtasks.exe
PID 1080 wrote to memory of 1300	1080	EU_SANCTION_LETTER-05052021.exe	schtasks.exe
PID 1080 wrote to memory of 1300	1080	EU_SANCTION_LETTER-05052021.exe	schtasks.exe
PID 1080 wrote to memory of 1300	1080	EU_SANCTION_LETTER-05052021.exe	schtasks.exe
PID 1080 wrote to memory of 316	1080	EU_SANCTION_LETTER-05052021.exe	vbc.exe
PID 1080 wrote to memory of 316	1080	EU_SANCTION_LETTER-05052021.exe	vbc.exe
PID 1080 wrote to memory of 316	1080	EU_SANCTION_LETTER-05052021.exe	vbc.exe
PID 1080 wrote to memory of 316	1080	EU_SANCTION_LETTER-05052021.exe	vbc.exe
PID 1080 wrote to memory of 316	1080	EU_SANCTION_LETTER-05052021.exe	vbc.exe
PID 1080 wrote to memory of 316	1080	EU_SANCTION_LETTER-05052021.exe	vbc.exe
PID 1080 wrote to memory of 316	1080	EU_SANCTION_LETTER-05052021.exe	vbc.exe
PID 1080 wrote to memory of 316	1080	EU_SANCTION_LETTER-05052021.exe	vbc.exe
PID 1080 wrote to memory of 316	1080	EU_SANCTION_LETTER-05052021.exe	vbc.exe
PID 1080 wrote to memory of 316	1080	EU_SANCTION_LETTER-05052021.exe	vbc.exe
PID 1080 wrote to memory of 316	1080	EU_SANCTION_LETTER-05052021.exe	vbc.exe
PID 1080 wrote to memory of 316	1080	EU_SANCTION_LETTER-05052021.exe	vbc.exe
PID 1080 wrote to memory of 316	1080	EU_SANCTION_LETTER-05052021.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\EU_SANCTION_LETTER-05052021.exe
"C:\Users\Admin\AppData\Local\Temp\EU_SANCTION_LETTER-05052021.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1080

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\xqNRBXt" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3CF1.tmp"
2⤵
- Creates scheduled task(s)
PID:1300

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
2⤵
- Suspicious use of SetWindowsHookEx
PID:316

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Scripting

1

T1064

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp3CF1.tmp
MD5
b7cf02ff75775a1bb0ec3e3dee7e8f8b

SHA1
8402bd38a87aba50245b78250f18a7c9788e9e08

SHA256
a4e555c15515d83182e5226a8bd8cdd353ffb2aafaba8b7779e114b1cd85a058

SHA512
ff9fa30f58943c1719350650a28c9c964b75a60addcea9fd18a701710e41bedbfdf954f93b42a0549f83835c7362d4928110d2a83d4e2bfc3f438e09bf3e3285

Download Submit
memory/316-68-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/316-69-0x000000000042F08F-mapping.dmp

Download
memory/316-70-0x0000000075D11000-0x0000000075D13000-memory.dmp

Filesize
8KB

Download
memory/316-71-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1080-60-0x0000000000390000-0x0000000000391000-memory.dmp

Filesize
4KB

Download
memory/1080-62-0x0000000004CF0000-0x0000000004CF1000-memory.dmp

Filesize
4KB

Download
memory/1080-63-0x0000000000540000-0x000000000054E000-memory.dmp

Filesize
56KB

Download
memory/1080-64-0x0000000008000000-0x00000000080C8000-memory.dmp

Filesize
800KB

Download
memory/1080-65-0x0000000005E00000-0x0000000005E89000-memory.dmp

Filesize
548KB

Download
memory/1300-66-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads