remcos | a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6

General

Target

a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe
Size

483KB
MD5

e9057285aafb6978445c07029fdc5898
SHA1

f928987a99bfde3cf80730d04e5c1436271d71d0
SHA256

a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6
SHA512

8603477d72a91833fb3d7c63086b5409ce4d39b3387008fcde96c9f94639726ff219bb6ce9fa9f2173da6b71e123b6549d1876b7145f3a0ff431ced7e779d90f
SSDEEP

6144:bXIktXfM8Lv86r9uVWAa2je4Z5zl4hgDHQQs4NTQjoHFsAOZZ5AXIcNn5Gv:bX7tPMK8ctGe4Dzl4h2QnuPs/Z56cv

Score

10^/10

remcos agent-010524 collection discovery rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

Agent-010524

C2

cavps7.duckdns.org:1991

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-43JG4A
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

Detected Nirsoft tools 7 IoCs

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

resource	yara_rule
behavioral2/memory/1264-16-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1264-20-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1564-13-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3476-12-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/1564-8-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3476-9-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/3476-24-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/1264-16-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/1264-20-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/3476-12-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/3476-9-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/3476-24-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

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	a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 212 set thread context of 3476	212	a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe	84
PID 212 set thread context of 1264	212	a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe	85
PID 212 set thread context of 1564	212	a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.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	a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3476	a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe
3476	a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe
1564	a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe
1564	a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe
3476	a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe
3476	a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
212	a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe
212	a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe
212	a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1564	a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 212 wrote to memory of 3476	212	a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe	84
PID 212 wrote to memory of 3476	212	a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe	84
PID 212 wrote to memory of 3476	212	a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe	84
PID 212 wrote to memory of 1264	212	a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe	85
PID 212 wrote to memory of 1264	212	a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe	85
PID 212 wrote to memory of 1264	212	a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe	85
PID 212 wrote to memory of 1564	212	a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe	86
PID 212 wrote to memory of 1564	212	a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe	86
PID 212 wrote to memory of 1564	212	a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe	86

C:\Users\Admin\AppData\Local\Temp\a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe
"C:\Users\Admin\AppData\Local\Temp\a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:212
- C:\Users\Admin\AppData\Local\Temp\a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe
  C:\Users\Admin\AppData\Local\Temp\a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe /stext "C:\Users\Admin\AppData\Local\Temp\fxkypncpvuecuvtbvclx"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:3476
- C:\Users\Admin\AppData\Local\Temp\a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe
  C:\Users\Admin\AppData\Local\Temp\a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe /stext "C:\Users\Admin\AppData\Local\Temp\hrpqigmircwhwbpfengzjmi"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:1264
- C:\Users\Admin\AppData\Local\Temp\a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe
  C:\Users\Admin\AppData\Local\Temp\a21c68c24894a9bd385b58971c4a35d8c4b896a5d4da56ad47832114af033ad6.exe /stext "C:\Users\Admin\AppData\Local\Temp\stdjjyxkfkomgidjvxssuzcwvh"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1564

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\fxkypncpvuecuvtbvclx

Filesize
4KB

MD5
15e28d82a9ee8a45c10bcf671fef0362

SHA1
2b126b086a1191cb8b4d444e87781358d51af3a4

SHA256
012fbb5f15d52a9560cf0e77fd36837ec2c56aff7a989d31c3d40d4f6df6cf9d

SHA512
3dd749523858a54e7e5ededba47d54715c9d5663dd0bd609363de7442436d1f0e924c5e4706e3ac413b79ddb6a18c796cc0ad166b4c87a3a7a6b009ba77fee82

Download Submit
memory/212-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/212-30-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/212-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/212-31-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/212-27-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1264-16-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1264-20-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1264-2-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1264-11-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1264-14-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1564-8-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1564-7-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1564-4-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1564-13-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3476-9-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3476-24-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3476-1-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3476-12-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3476-5-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download

Analysis

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