remcos | 9d25e1634e47286166285ddb5a10d0eca6523c91b3742a6ecdad87effe1d1988

General

Target

1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe
Size

483KB
MD5

432ea49d6aeb2594b6a554bbba941f92
SHA1

017fed1dc65c0cdc34d98e06780a7e58eaac5387
SHA256

9d25e1634e47286166285ddb5a10d0eca6523c91b3742a6ecdad87effe1d1988
SHA512

2169266451a2bd1355a6f67836c5395ed3597c37945af4fe9c6cd1e55e72b5dc5141035d61387dac35058d8ad463ced4b854245c1277659cd503d89d53945234
SSDEEP

6144:QTz+c6KHYBhDc1RGJdv//NkUn+N5Bkf/0TELRvIZPjbsAOZZBAXccroT4:QTlrYw1RUh3NFn+N5WfIQIjbs/ZBvT4

Score

10^/10

remcos remotehost collection credential_access discovery rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

dremom2.duckdns.org:2201

Attributes

audio_folder
MicRecords
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
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-OT0ZCG
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
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Detected Nirsoft tools 9 IoCs

Free utilities often used by attackers which can steal passwords, product keys, etc.

resource	yara_rule
behavioral2/memory/3332-11-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3332-14-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3332-23-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2000-21-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2000-20-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2000-16-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1236-13-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/1236-10-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/1236-26-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/2000-21-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/2000-20-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/2000-16-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/1236-13-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/1236-10-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/1236-26-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 5036 set thread context of 1236	5036	1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe	84
PID 5036 set thread context of 2000	5036	1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe	85
PID 5036 set thread context of 3332	5036	1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe	86

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1236	1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe
1236	1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe
3332	1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe
3332	1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe
1236	1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe
1236	1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
5036	1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe
5036	1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe
5036	1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3332	1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 5036 wrote to memory of 1236	5036	1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe	84
PID 5036 wrote to memory of 1236	5036	1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe	84
PID 5036 wrote to memory of 1236	5036	1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe	84
PID 5036 wrote to memory of 2000	5036	1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe	85
PID 5036 wrote to memory of 2000	5036	1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe	85
PID 5036 wrote to memory of 2000	5036	1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe	85
PID 5036 wrote to memory of 3332	5036	1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe	86
PID 5036 wrote to memory of 3332	5036	1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe	86
PID 5036 wrote to memory of 3332	5036	1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe	86

C:\Users\Admin\AppData\Local\Temp\1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe
"C:\Users\Admin\AppData\Local\Temp\1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:5036
- C:\Users\Admin\AppData\Local\Temp\1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\czzswuocrc"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:1236
- C:\Users\Admin\AppData\Local\Temp\1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\mbecwmzwfkhxb"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:2000
- C:\Users\Admin\AppData\Local\Temp\1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\1726937407bd5cf13219a7c4f22b341bc7b7dffbc72fd4c4a94fea2c0324f7cf47f0a8dd4d927.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\wvsvxfjxtszkloakg"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3332

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\czzswuocrc

Filesize
4KB

MD5
15e28d82a9ee8a45c10bcf671fef0362

SHA1
2b126b086a1191cb8b4d444e87781358d51af3a4

SHA256
012fbb5f15d52a9560cf0e77fd36837ec2c56aff7a989d31c3d40d4f6df6cf9d

SHA512
3dd749523858a54e7e5ededba47d54715c9d5663dd0bd609363de7442436d1f0e924c5e4706e3ac413b79ddb6a18c796cc0ad166b4c87a3a7a6b009ba77fee82

Download Submit
memory/1236-26-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1236-1-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1236-5-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1236-13-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1236-10-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2000-3-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2000-21-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2000-20-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2000-16-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2000-12-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3332-7-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3332-9-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3332-15-0x0000000000430000-0x00000000004F9000-memory.dmp

Filesize
804KB

Download
memory/3332-23-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3332-14-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3332-11-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/5036-32-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/5036-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/5036-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/5036-33-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/5036-29-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/5036-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/5036-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

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