remcos | 3ed1bebb7391002ffe104a9ffc9b0bf7fde5b42e3b5f798a6b02597775ebbf84

Analysis

max time kernel
148s
max time network
141s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
31/01/2023, 02:52

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General

Target
2d09367330c054e632b22f209a465567.exe
Size 969KB
Sample230131-dcqa3aed58
SHA256 3ed1bebb7391002ffe104a9ffc9b0bf7fde5b42e3b5f798a6b02597775ebbf84
MD5 2d09367330c054e632b22f209a465567
SHA1 0bb2f3d0b66d86c1348a7a7aacc4241058e4f1e4
SHA512 e16d0dc49709931b0398f66f96c95620697776040bfce18ecced3d8f1a33645f8e25e08b98f55608796d27228d3ede1e7ba7c5b1906b2ac82a5436741e168475
SSDEEP 24576:BZo0PdB9JeMgq0YEKSX0p75xtFwJ9YeNvIossiBYTQ:BZeM09KSX0p/EUeNvEM
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

remcos eric-host 2023 collection persistence rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

Eric-Host 2023

craigjonson1.gotdns.ch:2011

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
trs.exe
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
true
install_path
%AppData%
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_path
%AppData%
mouse_option
false
mutex
Rmc-Z2FLAS
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
ee
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

resource	yara_rule
behavioral1/memory/1600-118-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView
behavioral1/memory/1600-120-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 2 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/1160-117-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/1160-119-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 5 IoCs

resource	yara_rule
behavioral1/memory/1656-116-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/1160-117-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/1600-118-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft
behavioral1/memory/1160-119-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/1600-120-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft

Executes dropped EXE 5 IoCs

pid	Process
108	trs.exe
1916	trs.exe
1160	trs.exe
1600	trs.exe
1656	trs.exe

Loads dropped DLL 1 IoCs

pid	Process
624	cmd.exe

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
T1081

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	trs.exe

Adds Run key to start application 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ee = "\"C:\\Users\\Admin\\AppData\\Roaming\\trs.exe\""	trs.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\	trs.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ee = "\"C:\\Users\\Admin\\AppData\\Roaming\\trs.exe\""	trs.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\	2d09367330c054e632b22f209a465567.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ee = "\"C:\\Users\\Admin\\AppData\\Roaming\\trs.exe\""	2d09367330c054e632b22f209a465567.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\	2d09367330c054e632b22f209a465567.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ee = "\"C:\\Users\\Admin\\AppData\\Roaming\\trs.exe\""	2d09367330c054e632b22f209a465567.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\	trs.exe

Suspicious use of SetThreadContext 5 IoCs

description	pid	Process	procid_target
PID 840 set thread context of 1424	840	2d09367330c054e632b22f209a465567.exe	28
PID 108 set thread context of 1916	108	trs.exe	33
PID 1916 set thread context of 1160	1916	trs.exe	35
PID 1916 set thread context of 1600	1916	trs.exe	36
PID 1916 set thread context of 1656	1916	trs.exe	37

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
1916	trs.exe
1916	trs.exe
1916	trs.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1656	trs.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1916	trs.exe

Suspicious use of WriteProcessMemory 53 IoCs

description	pid	Process	procid_target
PID 840 wrote to memory of 1424	840	2d09367330c054e632b22f209a465567.exe	28
PID 840 wrote to memory of 1424	840	2d09367330c054e632b22f209a465567.exe	28
PID 840 wrote to memory of 1424	840	2d09367330c054e632b22f209a465567.exe	28
PID 840 wrote to memory of 1424	840	2d09367330c054e632b22f209a465567.exe	28
PID 840 wrote to memory of 1424	840	2d09367330c054e632b22f209a465567.exe	28
PID 840 wrote to memory of 1424	840	2d09367330c054e632b22f209a465567.exe	28
PID 840 wrote to memory of 1424	840	2d09367330c054e632b22f209a465567.exe	28
PID 840 wrote to memory of 1424	840	2d09367330c054e632b22f209a465567.exe	28
PID 840 wrote to memory of 1424	840	2d09367330c054e632b22f209a465567.exe	28
PID 840 wrote to memory of 1424	840	2d09367330c054e632b22f209a465567.exe	28
PID 840 wrote to memory of 1424	840	2d09367330c054e632b22f209a465567.exe	28
PID 840 wrote to memory of 1424	840	2d09367330c054e632b22f209a465567.exe	28
PID 840 wrote to memory of 1424	840	2d09367330c054e632b22f209a465567.exe	28
PID 1424 wrote to memory of 1132	1424	2d09367330c054e632b22f209a465567.exe	29
PID 1424 wrote to memory of 1132	1424	2d09367330c054e632b22f209a465567.exe	29
PID 1424 wrote to memory of 1132	1424	2d09367330c054e632b22f209a465567.exe	29
PID 1424 wrote to memory of 1132	1424	2d09367330c054e632b22f209a465567.exe	29
PID 1132 wrote to memory of 624	1132	WScript.exe	30
PID 1132 wrote to memory of 624	1132	WScript.exe	30
PID 1132 wrote to memory of 624	1132	WScript.exe	30
PID 1132 wrote to memory of 624	1132	WScript.exe	30
PID 624 wrote to memory of 108	624	cmd.exe	32
PID 624 wrote to memory of 108	624	cmd.exe	32
PID 624 wrote to memory of 108	624	cmd.exe	32
PID 624 wrote to memory of 108	624	cmd.exe	32
PID 108 wrote to memory of 1916	108	trs.exe	33
PID 108 wrote to memory of 1916	108	trs.exe	33
PID 108 wrote to memory of 1916	108	trs.exe	33
PID 108 wrote to memory of 1916	108	trs.exe	33
PID 108 wrote to memory of 1916	108	trs.exe	33
PID 108 wrote to memory of 1916	108	trs.exe	33
PID 108 wrote to memory of 1916	108	trs.exe	33
PID 108 wrote to memory of 1916	108	trs.exe	33
PID 108 wrote to memory of 1916	108	trs.exe	33
PID 108 wrote to memory of 1916	108	trs.exe	33
PID 108 wrote to memory of 1916	108	trs.exe	33
PID 108 wrote to memory of 1916	108	trs.exe	33
PID 108 wrote to memory of 1916	108	trs.exe	33
PID 1916 wrote to memory of 1160	1916	trs.exe	35
PID 1916 wrote to memory of 1160	1916	trs.exe	35
PID 1916 wrote to memory of 1160	1916	trs.exe	35
PID 1916 wrote to memory of 1160	1916	trs.exe	35
PID 1916 wrote to memory of 1160	1916	trs.exe	35
PID 1916 wrote to memory of 1600	1916	trs.exe	36
PID 1916 wrote to memory of 1600	1916	trs.exe	36
PID 1916 wrote to memory of 1600	1916	trs.exe	36
PID 1916 wrote to memory of 1600	1916	trs.exe	36
PID 1916 wrote to memory of 1600	1916	trs.exe	36
PID 1916 wrote to memory of 1656	1916	trs.exe	37
PID 1916 wrote to memory of 1656	1916	trs.exe	37
PID 1916 wrote to memory of 1656	1916	trs.exe	37
PID 1916 wrote to memory of 1656	1916	trs.exe	37
PID 1916 wrote to memory of 1656	1916	trs.exe	37

C:\Users\Admin\AppData\Local\Temp\2d09367330c054e632b22f209a465567.exe
"C:\Users\Admin\AppData\Local\Temp\2d09367330c054e632b22f209a465567.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:840
- C:\Users\Admin\AppData\Local\Temp\2d09367330c054e632b22f209a465567.exe
  "C:\Users\Admin\AppData\Local\Temp\2d09367330c054e632b22f209a465567.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:1424
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\rfdgveyglhdeaboawdhsjnjaggbl.vbs"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1132
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\trs.exe"
      4⤵
      Loads dropped DLL
      Suspicious use of WriteProcessMemory
      PID:624
    - - C:\Users\Admin\AppData\Roaming\trs.exe
        
        C:\Users\Admin\AppData\Roaming\trs.exe
        5⤵
        Executes dropped EXE
        Suspicious use of SetThreadContext
        Suspicious use of WriteProcessMemory
        
        PID:108
      - C:\Users\Admin\AppData\Roaming\trs.exe
        
        "C:\Users\Admin\AppData\Roaming\trs.exe"
        6⤵
        Executes dropped EXE
        Adds Run key to start application
        Suspicious use of SetThreadContext
        Suspicious behavior: MapViewOfSection
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:1916
        
        C:\Users\Admin\AppData\Roaming\trs.exe
        
        C:\Users\Admin\AppData\Roaming\trs.exe /stext "C:\Users\Admin\AppData\Local\Temp\bdrewvvzlbe"
        7⤵
        Executes dropped EXE
        
        PID:1160
        
        C:\Users\Admin\AppData\Roaming\trs.exe
        
        C:\Users\Admin\AppData\Roaming\trs.exe /stext "C:\Users\Admin\AppData\Local\Temp\lxwxxofszjwsxp"
        7⤵
        Executes dropped EXE
        Accesses Microsoft Outlook accounts
        
        PID:1600
        
        C:\Users\Admin\AppData\Roaming\trs.exe
        
        C:\Users\Admin\AppData\Roaming\trs.exe /stext "C:\Users\Admin\AppData\Local\Temp\oacpxyquuroxhdzui"
        7⤵
        Executes dropped EXE
        Suspicious use of AdjustPrivilegeToken
        
        PID:1656

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

rfdgveyglhdeaboawdhsjnjaggbl.vbs

Path C:\Users\Admin\AppData\Local\Temp\rfdgveyglhdeaboawdhsjnjaggbl.vbs
Size 398B
SHA256 b9c106ea9ba834520f1b3d32e7fd90750c83adaf9b3a464a13a9d56ae79fb84f
MD5 e3b82c3eed86d18b1cc374388f951eca
SHA1 cc50316b7993c4917af90675a746459b8d422115
SHA512 fd31315f512f7e3a13c496d46e59fa5cffbfcae263499bcfe8faa5e9288d2af5e64c33390ac1b20b66f900362d10cde44966876856e18d5f80dd221b4fd67943
MD5 SHA1 SHA512

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trs.exe

Path C:\Users\Admin\AppData\Roaming\trs.exe
Size 969KB
SHA256 3ed1bebb7391002ffe104a9ffc9b0bf7fde5b42e3b5f798a6b02597775ebbf84
MD5 2d09367330c054e632b22f209a465567
SHA1 0bb2f3d0b66d86c1348a7a7aacc4241058e4f1e4
SHA512 e16d0dc49709931b0398f66f96c95620697776040bfce18ecced3d8f1a33645f8e25e08b98f55608796d27228d3ede1e7ba7c5b1906b2ac82a5436741e168475
SSDEEP 24576:BZo0PdB9JeMgq0YEKSX0p75xtFwJ9YeNvIossiBYTQ:BZeM09KSX0p/EUeNvEM
MD5 SHA1 SHA512 SSDEEP

Submit Download

trs.exe

Path C:\Users\Admin\AppData\Roaming\trs.exe
Size 969KB
SHA256 3ed1bebb7391002ffe104a9ffc9b0bf7fde5b42e3b5f798a6b02597775ebbf84
MD5 2d09367330c054e632b22f209a465567
SHA1 0bb2f3d0b66d86c1348a7a7aacc4241058e4f1e4
SHA512 e16d0dc49709931b0398f66f96c95620697776040bfce18ecced3d8f1a33645f8e25e08b98f55608796d27228d3ede1e7ba7c5b1906b2ac82a5436741e168475
SSDEEP 24576:BZo0PdB9JeMgq0YEKSX0p75xtFwJ9YeNvIossiBYTQ:BZeM09KSX0p/EUeNvEM
MD5 SHA1 SHA512 SSDEEP

Submit Download

trs.exe

Path C:\Users\Admin\AppData\Roaming\trs.exe
Size 969KB
SHA256 3ed1bebb7391002ffe104a9ffc9b0bf7fde5b42e3b5f798a6b02597775ebbf84
MD5 2d09367330c054e632b22f209a465567
SHA1 0bb2f3d0b66d86c1348a7a7aacc4241058e4f1e4
SHA512 e16d0dc49709931b0398f66f96c95620697776040bfce18ecced3d8f1a33645f8e25e08b98f55608796d27228d3ede1e7ba7c5b1906b2ac82a5436741e168475
SSDEEP 24576:BZo0PdB9JeMgq0YEKSX0p75xtFwJ9YeNvIossiBYTQ:BZeM09KSX0p/EUeNvEM
MD5 SHA1 SHA512 SSDEEP

Submit Download

trs.exe

Path C:\Users\Admin\AppData\Roaming\trs.exe
Size 969KB
SHA256 3ed1bebb7391002ffe104a9ffc9b0bf7fde5b42e3b5f798a6b02597775ebbf84
MD5 2d09367330c054e632b22f209a465567
SHA1 0bb2f3d0b66d86c1348a7a7aacc4241058e4f1e4
SHA512 e16d0dc49709931b0398f66f96c95620697776040bfce18ecced3d8f1a33645f8e25e08b98f55608796d27228d3ede1e7ba7c5b1906b2ac82a5436741e168475
SSDEEP 24576:BZo0PdB9JeMgq0YEKSX0p75xtFwJ9YeNvIossiBYTQ:BZeM09KSX0p/EUeNvEM
MD5 SHA1 SHA512 SSDEEP

Submit Download

trs.exe

Path C:\Users\Admin\AppData\Roaming\trs.exe
Size 969KB
SHA256 3ed1bebb7391002ffe104a9ffc9b0bf7fde5b42e3b5f798a6b02597775ebbf84
MD5 2d09367330c054e632b22f209a465567
SHA1 0bb2f3d0b66d86c1348a7a7aacc4241058e4f1e4
SHA512 e16d0dc49709931b0398f66f96c95620697776040bfce18ecced3d8f1a33645f8e25e08b98f55608796d27228d3ede1e7ba7c5b1906b2ac82a5436741e168475
SSDEEP 24576:BZo0PdB9JeMgq0YEKSX0p75xtFwJ9YeNvIossiBYTQ:BZeM09KSX0p/EUeNvEM
MD5 SHA1 SHA512 SSDEEP

Submit Download

trs.exe

Path C:\Users\Admin\AppData\Roaming\trs.exe
Size 969KB
SHA256 3ed1bebb7391002ffe104a9ffc9b0bf7fde5b42e3b5f798a6b02597775ebbf84
MD5 2d09367330c054e632b22f209a465567
SHA1 0bb2f3d0b66d86c1348a7a7aacc4241058e4f1e4
SHA512 e16d0dc49709931b0398f66f96c95620697776040bfce18ecced3d8f1a33645f8e25e08b98f55608796d27228d3ede1e7ba7c5b1906b2ac82a5436741e168475
SSDEEP 24576:BZo0PdB9JeMgq0YEKSX0p75xtFwJ9YeNvIossiBYTQ:BZeM09KSX0p/EUeNvEM
MD5 SHA1 SHA512 SSDEEP

Submit Download

trs.exe

Path \Users\Admin\AppData\Roaming\trs.exe
Size 969KB
SHA256 3ed1bebb7391002ffe104a9ffc9b0bf7fde5b42e3b5f798a6b02597775ebbf84
MD5 2d09367330c054e632b22f209a465567
SHA1 0bb2f3d0b66d86c1348a7a7aacc4241058e4f1e4
SHA512 e16d0dc49709931b0398f66f96c95620697776040bfce18ecced3d8f1a33645f8e25e08b98f55608796d27228d3ede1e7ba7c5b1906b2ac82a5436741e168475
SSDEEP 24576:BZo0PdB9JeMgq0YEKSX0p75xtFwJ9YeNvIossiBYTQ:BZeM09KSX0p/EUeNvEM
MD5 SHA1 SHA512 SSDEEP

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memory/108-87-0x0000000000BD0000-0x0000000000CC8000-memory.dmp

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memory/840-58-0x0000000005640000-0x00000000056F4000-memory.dmp

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memory/840-57-0x0000000000520000-0x000000000052A000-memory.dmp

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memory/840-54-0x0000000000A70000-0x0000000000B68000-memory.dmp

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memory/840-59-0x00000000054C0000-0x000000000553E000-memory.dmp

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memory/840-56-0x0000000000420000-0x0000000000434000-memory.dmp

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memory/840-55-0x0000000075A91000-0x0000000075A93000-memory.dmp

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memory/1160-117-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/1160-119-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/1424-67-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1424-65-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1424-77-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1424-76-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1424-72-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1424-60-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1424-70-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1424-61-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1424-63-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1424-68-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1424-66-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1424-79-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1600-118-0x0000000000400000-0x0000000000457000-memory.dmp

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memory/1600-120-0x0000000000400000-0x0000000000457000-memory.dmp

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memory/1656-116-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/1916-106-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1916-107-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1916-121-0x0000000010000000-0x0000000010019000-memory.dmp

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memory/1916-125-0x0000000010000000-0x0000000010019000-memory.dmp

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memory/1916-124-0x0000000010000000-0x0000000010019000-memory.dmp

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memory/1916-126-0x0000000010000000-0x0000000010019000-memory.dmp

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memory/1916-127-0x0000000000400000-0x000000000047F000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads