remcos | b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e

General

Target

b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe
Size

1.3MB
MD5

60561cff1dee1f6bab79d28ab8a84dc3
SHA1

abd6f2841675755c088b4d70dee090225caa73db
SHA256

b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e
SHA512

ab073292660e415fbc8181fe7fefb83c3cdb92531fd4812742f7143dc31a75f1ab8b0e72279d02ffef137956502aa5c13a8e78ed1894ffd648de74b11c946fff
SSDEEP

24576:4Mbni723L73/gXFxoYXpmTvCkV0uf5ZmH1OvAwP0Cwbn:43a3L73ou7vCkCua1RwML

Score

10^/10

remcos remotehost collection rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

104.250.180.178:7902

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
Microsoft .exe
copy_folder
Microsoft
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
Microsoft -QUCX7D
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

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

Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 14 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4460-13-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/4460-17-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/4460-16-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/4460-15-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/4460-20-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/4460-19-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/4460-22-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/4460-21-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/4460-24-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/4460-50-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/4460-51-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/4460-52-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/4460-53-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/4460-54-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM

Detects executables built or packed with MPress PE compressor 12 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2504-25-0x0000000000400000-0x0000000000478000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4508-26-0x0000000000400000-0x0000000000462000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2504-30-0x0000000000400000-0x0000000000478000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1508-34-0x0000000000400000-0x0000000000424000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4508-37-0x0000000000400000-0x0000000000462000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1508-32-0x0000000000400000-0x0000000000424000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1508-31-0x0000000000400000-0x0000000000424000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2504-33-0x0000000000400000-0x0000000000478000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4508-29-0x0000000000400000-0x0000000000462000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4460-45-0x0000000010000000-0x0000000010019000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4460-48-0x0000000010000000-0x0000000010019000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4460-49-0x0000000010000000-0x0000000010019000-memory.dmp	INDICATOR_EXE_Packed_MPress

Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4508-37-0x0000000000400000-0x0000000000462000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store

Detects executables referencing many email and collaboration clients. Observed in information stealers 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4508-37-0x0000000000400000-0x0000000000462000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral2/memory/4508-37-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral2/memory/2504-33-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1508-34-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4508-37-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2504-33-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

AddInProcess32.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	AddInProcess32.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exeAddInProcess32.exe

description	pid	process	target process
PID 1792 set thread context of 4460	1792	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 4460 set thread context of 2504	4460	AddInProcess32.exe	AddInProcess32.exe
PID 4460 set thread context of 4508	4460	AddInProcess32.exe	AddInProcess32.exe
PID 4460 set thread context of 1508	4460	AddInProcess32.exe	AddInProcess32.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exeAddInProcess32.exeAddInProcess32.exe

pid	process
1792	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe
1792	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe
2504	AddInProcess32.exe
1508	AddInProcess32.exe
2504	AddInProcess32.exe
1508	AddInProcess32.exe
2504	AddInProcess32.exe
2504	AddInProcess32.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

AddInProcess32.exe

pid process

4460 AddInProcess32.exe
4460 AddInProcess32.exe
4460 AddInProcess32.exe
4460 AddInProcess32.exe
4460 AddInProcess32.exe

pid	process
4460	AddInProcess32.exe
4460	AddInProcess32.exe
4460	AddInProcess32.exe
4460	AddInProcess32.exe
4460	AddInProcess32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exeAddInProcess32.exe

description	pid	process
Token: SeDebugPrivilege	1792	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe
Token: SeDebugPrivilege	1508	AddInProcess32.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exeAddInProcess32.exe

description	pid	process	target process
PID 1792 wrote to memory of 4460	1792	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 1792 wrote to memory of 4460	1792	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 1792 wrote to memory of 4460	1792	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 1792 wrote to memory of 4460	1792	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 1792 wrote to memory of 4460	1792	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 1792 wrote to memory of 4460	1792	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 1792 wrote to memory of 4460	1792	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 1792 wrote to memory of 4460	1792	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 1792 wrote to memory of 4460	1792	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 1792 wrote to memory of 4460	1792	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 1792 wrote to memory of 4460	1792	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 1792 wrote to memory of 4460	1792	b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe	AddInProcess32.exe
PID 4460 wrote to memory of 4900	4460	AddInProcess32.exe	AddInProcess32.exe
PID 4460 wrote to memory of 4900	4460	AddInProcess32.exe	AddInProcess32.exe
PID 4460 wrote to memory of 4900	4460	AddInProcess32.exe	AddInProcess32.exe
PID 4460 wrote to memory of 2504	4460	AddInProcess32.exe	AddInProcess32.exe
PID 4460 wrote to memory of 2504	4460	AddInProcess32.exe	AddInProcess32.exe
PID 4460 wrote to memory of 2504	4460	AddInProcess32.exe	AddInProcess32.exe
PID 4460 wrote to memory of 2504	4460	AddInProcess32.exe	AddInProcess32.exe
PID 4460 wrote to memory of 2776	4460	AddInProcess32.exe	AddInProcess32.exe
PID 4460 wrote to memory of 2776	4460	AddInProcess32.exe	AddInProcess32.exe
PID 4460 wrote to memory of 2776	4460	AddInProcess32.exe	AddInProcess32.exe
PID 4460 wrote to memory of 4508	4460	AddInProcess32.exe	AddInProcess32.exe
PID 4460 wrote to memory of 4508	4460	AddInProcess32.exe	AddInProcess32.exe
PID 4460 wrote to memory of 4508	4460	AddInProcess32.exe	AddInProcess32.exe
PID 4460 wrote to memory of 4508	4460	AddInProcess32.exe	AddInProcess32.exe
PID 4460 wrote to memory of 1508	4460	AddInProcess32.exe	AddInProcess32.exe
PID 4460 wrote to memory of 1508	4460	AddInProcess32.exe	AddInProcess32.exe
PID 4460 wrote to memory of 1508	4460	AddInProcess32.exe	AddInProcess32.exe
PID 4460 wrote to memory of 1508	4460	AddInProcess32.exe	AddInProcess32.exe

C:\Users\Admin\AppData\Local\Temp\b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe
"C:\Users\Admin\AppData\Local\Temp\b27ccf7bb556e1f332c8feb3a12f6f3c4b0ba949c059cdc3a1bdd416fb87921e.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1792

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4460

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe /stext "C:\Users\Admin\AppData\Local\Temp\anptzrcrmbhxbuqgldvjwgffjbgsrhch"
3⤵
PID:4900

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe /stext "C:\Users\Admin\AppData\Local\Temp\anptzrcrmbhxbuqgldvjwgffjbgsrhch"
3⤵
- Suspicious behavior: EnumeratesProcesses
PID:2504

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe /stext "C:\Users\Admin\AppData\Local\Temp\lpum"
3⤵
PID:2776

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe /stext "C:\Users\Admin\AppData\Local\Temp\lpum"
3⤵
- Accesses Microsoft Outlook accounts
PID:4508

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe /stext "C:\Users\Admin\AppData\Local\Temp\njhebcyn"
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1508

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\anptzrcrmbhxbuqgldvjwgffjbgsrhch
Filesize
4KB

MD5
73ddf6cd83c2ad8a2fbb2383e322ffbc

SHA1
05270f8bb7b5cc6ab9a61ae7453d047379089147

SHA256
0ef9194c6e90b23c416316fc5a15f549ee5b2472014fcd7648d72ca9a865b409

SHA512
714db1956faa795005b15324b9604105881d6b484fe899876fe0df85783c61a72f556a875833af8625625212503b95eea2eb353a1d98f6a7af47a3658ea5262d

Download Submit
memory/1508-34-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1508-32-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1508-31-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1792-8-0x0000000074FF0000-0x00000000757A0000-memory.dmp

Filesize
7.7MB

Download
memory/1792-11-0x0000000007610000-0x000000000762A000-memory.dmp

Filesize
104KB

Download
memory/1792-6-0x0000000005700000-0x000000000579C000-memory.dmp

Filesize
624KB

Download
memory/1792-7-0x00000000067B0000-0x00000000067F4000-memory.dmp

Filesize
272KB

Download
memory/1792-4-0x0000000005450000-0x000000000545A000-memory.dmp

Filesize
40KB

Download
memory/1792-9-0x0000000074FFE000-0x0000000074FFF000-memory.dmp

Filesize
4KB

Download
memory/1792-10-0x0000000074FF0000-0x00000000757A0000-memory.dmp

Filesize
7.7MB

Download
memory/1792-5-0x0000000074FF0000-0x00000000757A0000-memory.dmp

Filesize
7.7MB

Download
memory/1792-12-0x0000000009F90000-0x0000000009F96000-memory.dmp

Filesize
24KB

Download
memory/1792-3-0x00000000053A0000-0x0000000005432000-memory.dmp

Filesize
584KB

Download
memory/1792-18-0x0000000074FF0000-0x00000000757A0000-memory.dmp

Filesize
7.7MB

Download
memory/1792-0-0x0000000074FFE000-0x0000000074FFF000-memory.dmp

Filesize
4KB

Download
memory/1792-2-0x0000000005A40000-0x0000000005FE4000-memory.dmp

Filesize
5.6MB

Download
memory/1792-1-0x00000000009D0000-0x0000000000B2C000-memory.dmp

Filesize
1.4MB

Download
memory/2504-33-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2504-25-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2504-43-0x0000000074FE0000-0x000000007506D000-memory.dmp

Filesize
564KB

Download
memory/2504-35-0x0000000074FE0000-0x000000007506D000-memory.dmp

Filesize
564KB

Download
memory/2504-30-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4460-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4460-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4460-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4460-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4460-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4460-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4460-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4460-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4460-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4460-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4460-17-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4460-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4460-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4460-13-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4460-45-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4460-48-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4460-49-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4508-36-0x0000000074FE0000-0x000000007506D000-memory.dmp

Filesize
564KB

Download
memory/4508-29-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4508-26-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4508-41-0x0000000074FE0000-0x000000007506D000-memory.dmp

Filesize
564KB

Download
memory/4508-37-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads