remcos | f8e75ae7b73058c83d8e49afd902e29dbd5dc808017d7ec736a8f1aa0ad88c51

General

Target

baea8f92a509da346b2785803537713d_JaffaCakes118.exe
Size

814KB
MD5

baea8f92a509da346b2785803537713d
SHA1

35ec1fce1fd39a8fad37e88ccb25c859fc21b297
SHA256

f8e75ae7b73058c83d8e49afd902e29dbd5dc808017d7ec736a8f1aa0ad88c51
SHA512

ecc34f5cc2f8e79096a44ec235dccc2fb3f7e0e280553be51d5d2397d7c24ad2dc8ca899da6db6ea70e60fee280302fcf317efacc14603a277f642f79b0b79f1
SSDEEP

12288:3fTHMlxK/70jI/NaXNVh6Xj6Ftopum4UcOm4F296pKeXU1W9qIWogZJuNeGDHFyZ:P50k/NadgHY8QM4eWWkIxgZJw

Score

10^/10

remcos remotehost evasion rat

Malware Config

Extracted

Family

remcos

Version

3.3.0 Pro

Botnet

RemoteHost

C2

172.94.88.26:3033

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-LNYWHZ
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
notepad;solitaire;

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

Processes:

baea8f92a509da346b2785803537713d_JaffaCakes118.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Oracle\VirtualBox Guest Additions	baea8f92a509da346b2785803537713d_JaffaCakes118.exe

Looks for VMWare Tools registry key 2 TTPs 1 IoCs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

baea8f92a509da346b2785803537713d_JaffaCakes118.exe

description ioc process

Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\VMware Tools baea8f92a509da346b2785803537713d_JaffaCakes118.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\VMware Tools	baea8f92a509da346b2785803537713d_JaffaCakes118.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

baea8f92a509da346b2785803537713d_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	baea8f92a509da346b2785803537713d_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	baea8f92a509da346b2785803537713d_JaffaCakes118.exe

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:

baea8f92a509da346b2785803537713d_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	baea8f92a509da346b2785803537713d_JaffaCakes118.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

baea8f92a509da346b2785803537713d_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	baea8f92a509da346b2785803537713d_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	baea8f92a509da346b2785803537713d_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

baea8f92a509da346b2785803537713d_JaffaCakes118.exe

description pid process target process

PID 392 set thread context of 2520 392 baea8f92a509da346b2785803537713d_JaffaCakes118.exe RegSvcs.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

powershell.exe

pid process

4172 powershell.exe
4172 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 4172 powershell.exe

description	pid	process	target process
PID 392 set thread context of 2520	392	baea8f92a509da346b2785803537713d_JaffaCakes118.exe	RegSvcs.exe

pid	process
4172	powershell.exe
4172	powershell.exe

description	pid	process
Token: SeDebugPrivilege	4172	powershell.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

baea8f92a509da346b2785803537713d_JaffaCakes118.exe

description	pid	process	target process
PID 392 wrote to memory of 4172	392	baea8f92a509da346b2785803537713d_JaffaCakes118.exe	powershell.exe
PID 392 wrote to memory of 4172	392	baea8f92a509da346b2785803537713d_JaffaCakes118.exe	powershell.exe
PID 392 wrote to memory of 4172	392	baea8f92a509da346b2785803537713d_JaffaCakes118.exe	powershell.exe
PID 392 wrote to memory of 2520	392	baea8f92a509da346b2785803537713d_JaffaCakes118.exe	RegSvcs.exe
PID 392 wrote to memory of 2520	392	baea8f92a509da346b2785803537713d_JaffaCakes118.exe	RegSvcs.exe
PID 392 wrote to memory of 2520	392	baea8f92a509da346b2785803537713d_JaffaCakes118.exe	RegSvcs.exe
PID 392 wrote to memory of 2520	392	baea8f92a509da346b2785803537713d_JaffaCakes118.exe	RegSvcs.exe
PID 392 wrote to memory of 2520	392	baea8f92a509da346b2785803537713d_JaffaCakes118.exe	RegSvcs.exe
PID 392 wrote to memory of 2520	392	baea8f92a509da346b2785803537713d_JaffaCakes118.exe	RegSvcs.exe
PID 392 wrote to memory of 2520	392	baea8f92a509da346b2785803537713d_JaffaCakes118.exe	RegSvcs.exe
PID 392 wrote to memory of 2520	392	baea8f92a509da346b2785803537713d_JaffaCakes118.exe	RegSvcs.exe
PID 392 wrote to memory of 2520	392	baea8f92a509da346b2785803537713d_JaffaCakes118.exe	RegSvcs.exe
PID 392 wrote to memory of 2520	392	baea8f92a509da346b2785803537713d_JaffaCakes118.exe	RegSvcs.exe
PID 392 wrote to memory of 2520	392	baea8f92a509da346b2785803537713d_JaffaCakes118.exe	RegSvcs.exe
PID 392 wrote to memory of 2520	392	baea8f92a509da346b2785803537713d_JaffaCakes118.exe	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\baea8f92a509da346b2785803537713d_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\baea8f92a509da346b2785803537713d_JaffaCakes118.exe"
1⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:392

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\baea8f92a509da346b2785803537713d_JaffaCakes118.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4172

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
2⤵
PID:2520

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Query Registry

5

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

4

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_obzh4mxn.gqd.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/392-6-0x0000000004E30000-0x0000000004E3E000-memory.dmp

Filesize
56KB

Download
memory/392-2-0x0000000009580000-0x0000000009B24000-memory.dmp

Filesize
5.6MB

Download
memory/392-3-0x0000000004CF0000-0x0000000004D82000-memory.dmp

Filesize
584KB

Download
memory/392-4-0x0000000004E70000-0x0000000004E80000-memory.dmp

Filesize
64KB

Download
memory/392-5-0x0000000004CA0000-0x0000000004CAA000-memory.dmp

Filesize
40KB

Download
memory/392-1-0x0000000074F20000-0x00000000756D0000-memory.dmp

Filesize
7.7MB

Download
memory/392-7-0x0000000074F20000-0x00000000756D0000-memory.dmp

Filesize
7.7MB

Download
memory/392-8-0x0000000004E70000-0x0000000004E80000-memory.dmp

Filesize
64KB

Download
memory/392-9-0x0000000005AA0000-0x0000000005B3C000-memory.dmp

Filesize
624KB

Download
memory/392-10-0x0000000005B40000-0x0000000005BDC000-memory.dmp

Filesize
624KB

Download
memory/392-11-0x0000000006AD0000-0x0000000006B36000-memory.dmp

Filesize
408KB

Download
memory/392-21-0x0000000074F20000-0x00000000756D0000-memory.dmp

Filesize
7.7MB

Download
memory/392-0-0x0000000000140000-0x0000000000212000-memory.dmp

Filesize
840KB

Download
memory/2520-19-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2520-20-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2520-23-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2520-65-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2520-73-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2520-72-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2520-71-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2520-70-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2520-69-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2520-68-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2520-67-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2520-31-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2520-17-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2520-66-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/4172-32-0x0000000005D40000-0x0000000006094000-memory.dmp

Filesize
3.3MB

Download
memory/4172-39-0x000000007F6A0000-0x000000007F6B0000-memory.dmp

Filesize
64KB

Download
memory/4172-40-0x0000000007260000-0x0000000007292000-memory.dmp

Filesize
200KB

Download
memory/4172-41-0x0000000071250000-0x000000007129C000-memory.dmp

Filesize
304KB

Download
memory/4172-51-0x0000000007240000-0x000000000725E000-memory.dmp

Filesize
120KB

Download
memory/4172-52-0x00000000074A0000-0x0000000007543000-memory.dmp

Filesize
652KB

Download
memory/4172-53-0x0000000007C30000-0x00000000082AA000-memory.dmp

Filesize
6.5MB

Download
memory/4172-54-0x00000000075F0000-0x000000000760A000-memory.dmp

Filesize
104KB

Download
memory/4172-55-0x0000000007660000-0x000000000766A000-memory.dmp

Filesize
40KB

Download
memory/4172-56-0x0000000007870000-0x0000000007906000-memory.dmp

Filesize
600KB

Download
memory/4172-57-0x00000000077F0000-0x0000000007801000-memory.dmp

Filesize
68KB

Download
memory/4172-58-0x0000000007820000-0x000000000782E000-memory.dmp

Filesize
56KB

Download
memory/4172-59-0x0000000007830000-0x0000000007844000-memory.dmp

Filesize
80KB

Download
memory/4172-60-0x0000000007930000-0x000000000794A000-memory.dmp

Filesize
104KB

Download
memory/4172-61-0x0000000007910000-0x0000000007918000-memory.dmp

Filesize
32KB

Download
memory/4172-64-0x0000000074F20000-0x00000000756D0000-memory.dmp

Filesize
7.7MB

Download
memory/4172-38-0x0000000006360000-0x00000000063AC000-memory.dmp

Filesize
304KB

Download
memory/4172-37-0x00000000062D0000-0x00000000062EE000-memory.dmp

Filesize
120KB

Download
memory/4172-24-0x0000000005A50000-0x0000000005A72000-memory.dmp

Filesize
136KB

Download
memory/4172-30-0x0000000005BF0000-0x0000000005C56000-memory.dmp

Filesize
408KB

Download
memory/4172-16-0x00000000053F0000-0x0000000005A18000-memory.dmp

Filesize
6.2MB

Download
memory/4172-14-0x0000000002A00000-0x0000000002A10000-memory.dmp

Filesize
64KB

Download
memory/4172-15-0x0000000002A00000-0x0000000002A10000-memory.dmp

Filesize
64KB

Download
memory/4172-13-0x0000000074F20000-0x00000000756D0000-memory.dmp

Filesize
7.7MB

Download
memory/4172-12-0x00000000029B0000-0x00000000029E6000-memory.dmp

Filesize
216KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads