remcos | a1f0f4676e135cc88ab8b6a25c70530fa193b1718bd2ba7b6ac1c997c241f6c8

Analysis

max time kernel
148s
max time network
151s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
04-04-2024 07:24

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General

Target

17122153850e49c0cfb850fba174cf16707d6542d13cef87fc72c790ae00b3df54faaaaed9126.dat-decoded.exe
Size

483KB
MD5

c16b61d355597e973962354a54d9105a
SHA1

418f9f2d76cc53b40f6f7321f93bff947af7a699
SHA256

a1f0f4676e135cc88ab8b6a25c70530fa193b1718bd2ba7b6ac1c997c241f6c8
SHA512

9e4ede43e4cce4a0312cb52a795bf04bf75b7f5c8dfd837f47d86968db11febc92434d1aa71d88e785d3e99e12a99d997ce0edc9061fe2b380f82d03f7c7071e
SSDEEP

6144:aXIktXfM8Lv86r9uVWAa2je4Z5zl4hgDHQQs4NTQjoHFsAOZZDAXYcNH5Gv:aX7tPMK8ctGe4Dzl4h2QnuPs/ZDicv

Score

10^/10

remcos remotehost collection rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

jansuri.kozow.com:7232

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-3XBWOL
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

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral1/memory/2692-33-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral1/memory/2692-51-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 2 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral1/memory/2516-28-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/2516-42-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 7 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2692-33-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/2928-35-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2928-36-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2516-28-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2928-37-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2516-42-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2692-51-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

iexplore.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	iexplore.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

17122153850e49c0cfb850fba174cf16707d6542d13cef87fc72c790ae00b3df54faaaaed9126.dat-decoded.exeiexplore.exe

description	pid	process	target process
PID 3020 set thread context of 2072	3020	17122153850e49c0cfb850fba174cf16707d6542d13cef87fc72c790ae00b3df54faaaaed9126.dat-decoded.exe	iexplore.exe
PID 2072 set thread context of 2516	2072	iexplore.exe	iexplore.exe
PID 2072 set thread context of 2692	2072	iexplore.exe	iexplore.exe
PID 2072 set thread context of 2928	2072	iexplore.exe	iexplore.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

iexplore.exe

pid process

2516 iexplore.exe
2516 iexplore.exe

pid	process
2516	iexplore.exe
2516	iexplore.exe

Suspicious behavior: MapViewOfSection 4 IoCs

Processes:

17122153850e49c0cfb850fba174cf16707d6542d13cef87fc72c790ae00b3df54faaaaed9126.dat-decoded.exeiexplore.exe

pid	process
3020	17122153850e49c0cfb850fba174cf16707d6542d13cef87fc72c790ae00b3df54faaaaed9126.dat-decoded.exe
2072	iexplore.exe
2072	iexplore.exe
2072	iexplore.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

iexplore.exe

description pid process

Token: SeDebugPrivilege 2928 iexplore.exe

description	pid	process
Token: SeDebugPrivilege	2928	iexplore.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

17122153850e49c0cfb850fba174cf16707d6542d13cef87fc72c790ae00b3df54faaaaed9126.dat-decoded.exeiexplore.exe

description	pid	process	target process
PID 3020 wrote to memory of 2072	3020	17122153850e49c0cfb850fba174cf16707d6542d13cef87fc72c790ae00b3df54faaaaed9126.dat-decoded.exe	iexplore.exe
PID 3020 wrote to memory of 2072	3020	17122153850e49c0cfb850fba174cf16707d6542d13cef87fc72c790ae00b3df54faaaaed9126.dat-decoded.exe	iexplore.exe
PID 3020 wrote to memory of 2072	3020	17122153850e49c0cfb850fba174cf16707d6542d13cef87fc72c790ae00b3df54faaaaed9126.dat-decoded.exe	iexplore.exe
PID 3020 wrote to memory of 2072	3020	17122153850e49c0cfb850fba174cf16707d6542d13cef87fc72c790ae00b3df54faaaaed9126.dat-decoded.exe	iexplore.exe
PID 3020 wrote to memory of 2072	3020	17122153850e49c0cfb850fba174cf16707d6542d13cef87fc72c790ae00b3df54faaaaed9126.dat-decoded.exe	iexplore.exe
PID 2072 wrote to memory of 2516	2072	iexplore.exe	iexplore.exe
PID 2072 wrote to memory of 2516	2072	iexplore.exe	iexplore.exe
PID 2072 wrote to memory of 2516	2072	iexplore.exe	iexplore.exe
PID 2072 wrote to memory of 2516	2072	iexplore.exe	iexplore.exe
PID 2072 wrote to memory of 2516	2072	iexplore.exe	iexplore.exe
PID 2072 wrote to memory of 2692	2072	iexplore.exe	iexplore.exe
PID 2072 wrote to memory of 2692	2072	iexplore.exe	iexplore.exe
PID 2072 wrote to memory of 2692	2072	iexplore.exe	iexplore.exe
PID 2072 wrote to memory of 2692	2072	iexplore.exe	iexplore.exe
PID 2072 wrote to memory of 2692	2072	iexplore.exe	iexplore.exe
PID 2072 wrote to memory of 2928	2072	iexplore.exe	iexplore.exe
PID 2072 wrote to memory of 2928	2072	iexplore.exe	iexplore.exe
PID 2072 wrote to memory of 2928	2072	iexplore.exe	iexplore.exe
PID 2072 wrote to memory of 2928	2072	iexplore.exe	iexplore.exe
PID 2072 wrote to memory of 2928	2072	iexplore.exe	iexplore.exe

C:\Users\Admin\AppData\Local\Temp\17122153850e49c0cfb850fba174cf16707d6542d13cef87fc72c790ae00b3df54faaaaed9126.dat-decoded.exe
"C:\Users\Admin\AppData\Local\Temp\17122153850e49c0cfb850fba174cf16707d6542d13cef87fc72c790ae00b3df54faaaaed9126.dat-decoded.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3020

\??\c:\program files (x86)\internet explorer\iexplore.exe
"c:\program files (x86)\internet explorer\iexplore.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2072

\??\c:\program files (x86)\internet explorer\iexplore.exe
"c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\vxrqdsfchopqb"
3⤵
- Suspicious behavior: EnumeratesProcesses
PID:2516

\??\c:\program files (x86)\internet explorer\iexplore.exe
"c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\greiekqdvwhdluwu"
3⤵
- Accesses Microsoft Outlook accounts
PID:2692

\??\c:\program files (x86)\internet explorer\iexplore.exe
"c:\program files (x86)\internet explorer\iexplore.exe" /stext "C:\Users\Admin\AppData\Local\Temp\qtjtfdbxjeainakxtfp"
3⤵
- Suspicious use of AdjustPrivilegeToken
PID:2928

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
memory/2072-50-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2072-52-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2072-6-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2072-63-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2072-8-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2072-62-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2072-10-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2072-60-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2072-12-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2072-14-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2072-15-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2072-59-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2072-58-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2072-56-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2072-55-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2072-54-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2072-53-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2072-4-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2072-0-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2072-49-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2072-7-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2072-11-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2072-9-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2072-48-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2072-2-0x00000000001C0000-0x0000000000242000-memory.dmp

Filesize
520KB

Download
memory/2072-44-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2072-47-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2516-42-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2516-28-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2516-23-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2516-18-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2692-51-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2692-29-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2692-33-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2692-22-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2928-30-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2928-34-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2928-24-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2928-35-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2928-37-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2928-36-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download