remcos | ca3bb8d7b3a66189add3fdd0dac2403783af3e4d36a117aad422647e3d7223d9

General

Target

a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe
Size

1.1MB
MD5

86e5451f3367e6580295e46b33d3d8ea
SHA1

b27ac49886349182a8f3cb9cdd7eaed0438ba3a3
SHA256

a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49
SHA512

1b0bfc3df08ef499b2c1d7d24f9e31a027c98592645512d73cd58b50f12d52fda4a1287a7a61e6e7ce63a418db393c3546586ea6bf043e8a9de873a2e0ac85eb

Score

10^/10

remcos 10 persistence rat

Malware Config

Extracted

Family

remcos

Version

2.7.0 Pro

Botnet

10

C2

duckdne7832732.duckdns.org:1718

Attributes

audio_folder
MicRecords
audio_path
%AppData%
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
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-RN68N0
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
take_screenshot_title
wikipedia;solitaire;

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Sets service image path in registry 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe

description	pid	process	target process
PID 1288 set thread context of 668	1288	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe	RegSvcs.exe

Drops file in Windows directory 6 IoCs

Processes:

svchost.exe

description	ioc	process
File opened for modification	C:\Windows\WindowsUpdate.log	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\Logs\edb.chk	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\Logs\edb.log	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\DataStore.edb	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\DataStore.jfm	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\ReportingEvents.log	svchost.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

3396 schtasks.exe

pid	process
3396	schtasks.exe

Modifies data under HKEY_USERS 41 IoCs

Processes:

WaaSMedicAgent.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	WaaSMedicAgent.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

svchost.exe

description	pid	process
Token: SeShutdownPrivilege	4160	svchost.exe
Token: SeCreatePagefilePrivilege	4160	svchost.exe
Token: SeShutdownPrivilege	4160	svchost.exe
Token: SeCreatePagefilePrivilege	4160	svchost.exe
Token: SeShutdownPrivilege	4160	svchost.exe
Token: SeCreatePagefilePrivilege	4160	svchost.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe

description	pid	process	target process
PID 1288 wrote to memory of 3396	1288	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe	schtasks.exe
PID 1288 wrote to memory of 3396	1288	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe	schtasks.exe
PID 1288 wrote to memory of 3396	1288	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe	schtasks.exe
PID 1288 wrote to memory of 668	1288	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe	RegSvcs.exe
PID 1288 wrote to memory of 668	1288	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe	RegSvcs.exe
PID 1288 wrote to memory of 668	1288	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe	RegSvcs.exe
PID 1288 wrote to memory of 668	1288	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe	RegSvcs.exe
PID 1288 wrote to memory of 668	1288	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe	RegSvcs.exe
PID 1288 wrote to memory of 668	1288	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe	RegSvcs.exe
PID 1288 wrote to memory of 668	1288	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe	RegSvcs.exe
PID 1288 wrote to memory of 668	1288	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe	RegSvcs.exe
PID 1288 wrote to memory of 668	1288	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe	RegSvcs.exe
PID 1288 wrote to memory of 668	1288	a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe
"C:\Users\Admin\AppData\Local\Temp\a1477a2f05552a89c24ca286f54cdded4b87694302d3d8af2f5cf9dbd7d3ae49.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1288

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\VuYmmGpWGSWON" /XML "C:\Users\Admin\AppData\Local\Temp\tmp55C9.tmp"
2⤵
- Creates scheduled task(s)
PID:3396

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
2⤵
PID:668

C:\Windows\System32\WaaSMedicAgent.exe
C:\Windows\System32\WaaSMedicAgent.exe 23b0e09585a9b1f12d0c71f381bc70d8 zIqyfjkp1UaTvPJr2iUtfw.0.1.0.0.0
1⤵
- Modifies data under HKEY_USERS
PID:3016

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:4160

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp55C9.tmp
MD5
bfaedf5e714bb3f9e4d14c529f4b1125

SHA1
b1ebcaf45d889844bbfb50ae14bb1595dea4621d

SHA256
bc78cf7895fbd31c2fc7f3a8e9080b3d257a05a968e5addbdfa88252ac1df711

SHA512
e5c47088ae5e8dd58410c0dcf35757b465a2cf9ff746bc73a1f27349d0331d79331b33a54d1a7c19b20cf33544adfcd0b3bbf2a3ab9b801b53455edb02bf6c7a

Download Submit
memory/668-141-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1288-130-0x0000000000060000-0x0000000000172000-memory.dmp

Filesize
1.1MB

Download
memory/1288-131-0x0000000004B30000-0x0000000004BCC000-memory.dmp

Filesize
624KB

Download
memory/1288-132-0x0000000005180000-0x0000000005724000-memory.dmp

Filesize
5.6MB

Download
memory/1288-133-0x0000000004C70000-0x0000000004D02000-memory.dmp

Filesize
584KB

Download
memory/1288-134-0x0000000004BD0000-0x0000000004BDA000-memory.dmp

Filesize
40KB

Download
memory/1288-135-0x0000000004E00000-0x0000000004E56000-memory.dmp

Filesize
344KB

Download
memory/1288-136-0x0000000004BD0000-0x0000000005174000-memory.dmp

Filesize
5.6MB

Download
memory/4160-137-0x000001C0FD530000-0x000001C0FD540000-memory.dmp

Filesize
64KB

Download
memory/4160-138-0x000001C0FD590000-0x000001C0FD5A0000-memory.dmp

Filesize
64KB

Download
memory/4160-139-0x000001C0FE270000-0x000001C0FE274000-memory.dmp

Filesize
16KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads