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 1828 set thread context of 2700 1828 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

1952 schtasks.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

vbc.exe

pid process

2700 vbc.exe

description	pid	process	target process
PID 1828 set thread context of 2700	1828	EU_SANCTION_LETTER-05052021.exe	vbc.exe

pid	process
1952	schtasks.exe

pid	process
2700	vbc.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

EU_SANCTION_LETTER-05052021.exe

description	pid	process	target process
PID 1828 wrote to memory of 1952	1828	EU_SANCTION_LETTER-05052021.exe	schtasks.exe
PID 1828 wrote to memory of 1952	1828	EU_SANCTION_LETTER-05052021.exe	schtasks.exe
PID 1828 wrote to memory of 1952	1828	EU_SANCTION_LETTER-05052021.exe	schtasks.exe
PID 1828 wrote to memory of 2700	1828	EU_SANCTION_LETTER-05052021.exe	vbc.exe
PID 1828 wrote to memory of 2700	1828	EU_SANCTION_LETTER-05052021.exe	vbc.exe
PID 1828 wrote to memory of 2700	1828	EU_SANCTION_LETTER-05052021.exe	vbc.exe
PID 1828 wrote to memory of 2700	1828	EU_SANCTION_LETTER-05052021.exe	vbc.exe
PID 1828 wrote to memory of 2700	1828	EU_SANCTION_LETTER-05052021.exe	vbc.exe
PID 1828 wrote to memory of 2700	1828	EU_SANCTION_LETTER-05052021.exe	vbc.exe
PID 1828 wrote to memory of 2700	1828	EU_SANCTION_LETTER-05052021.exe	vbc.exe
PID 1828 wrote to memory of 2700	1828	EU_SANCTION_LETTER-05052021.exe	vbc.exe
PID 1828 wrote to memory of 2700	1828	EU_SANCTION_LETTER-05052021.exe	vbc.exe
PID 1828 wrote to memory of 2700	1828	EU_SANCTION_LETTER-05052021.exe	vbc.exe
PID 1828 wrote to memory of 2700	1828	EU_SANCTION_LETTER-05052021.exe	vbc.exe
PID 1828 wrote to memory of 2700	1828	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:1828

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\xqNRBXt" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA212.tmp"
2⤵
- Creates scheduled task(s)
PID:1952

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
2⤵
- Suspicious use of SetWindowsHookEx
PID:2700

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpA212.tmp
MD5
dc8d65e0bd88788b5b505f9fbc205fc8

SHA1
8236517d299b971e9f487540598eaed32c187332

SHA256
3a8c23432a0d7a66926519bc3a9cc97b1d7c9bda19154acfc36043d627cbc7cd

SHA512
53bce8be309480fd7f536ce5a5f6c5c07344b3a900aca33d8ae8143dcc72064c14fe15e90ee3a9323d362a4ecb401fe443e50c8e36aa0de316bc85e0b7705083

Download Submit
memory/1828-121-0x00000000050B0000-0x00000000050BE000-memory.dmp

Filesize
56KB

Download
memory/1828-117-0x0000000004DD0000-0x0000000004DD1000-memory.dmp

Filesize
4KB

Download
memory/1828-118-0x0000000004D30000-0x0000000004D31000-memory.dmp

Filesize
4KB

Download
memory/1828-119-0x0000000004D50000-0x0000000004D51000-memory.dmp

Filesize
4KB

Download
memory/1828-120-0x00000000067D0000-0x00000000067D1000-memory.dmp

Filesize
4KB

Download
memory/1828-114-0x0000000000400000-0x0000000000401000-memory.dmp

Filesize
4KB

Download
memory/1828-122-0x0000000008510000-0x00000000085D8000-memory.dmp

Filesize
800KB

Download
memory/1828-123-0x000000000AD10000-0x000000000AD99000-memory.dmp

Filesize
548KB

Download
memory/1828-116-0x00000000052D0000-0x00000000052D1000-memory.dmp

Filesize
4KB

Download
memory/1952-124-0x0000000000000000-mapping.dmp

Download
memory/2700-126-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2700-127-0x000000000042F08F-mapping.dmp

Download
memory/2700-130-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads