remcos | 618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4

Analysis

max time kernel
145s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20220722-en
resource tags

arch:x64arch:x86image:win10v2004-20220722-enlocale:en-usos:windows10-2004-x64system
submitted
30/07/2022, 20:49

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General

Target
618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4.exe
Size 218KB
Sample220730-zmg84affd2
SHA256 618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4
MD5 25f290634a8092cc13820b1ade6ec33c
SHA1 3d4913172fedc50d9654effeab0fdcec9bb36014
SHA512 22d9aaa2ab0780eab101a7c387e491e36f9672c59dc4b97a92488685dc3b62e585d004d8550f44a17034dc12e2dc6f08a2406991418452cb01e417f2b5e6da29
MD5 SHA1 SHA512

Score

10^/10

remcos remotehost rat

Malware Config

Extracted

Family

remcos

Version

2.0.5 Pro

Botnet

RemoteHost

79.172.242.28:2404

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
remcos.exe
copy_folder
remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-6PPTSU
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
remcos
take_screenshot_option
false
take_screenshot_time
5

Signatures

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

Executes dropped EXE 2 IoCs

pid	Process
1812	tmp.exe
3064	.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3463845317-933582289-45817732-1000\Control Panel\International\Geo\Nation	618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File created	C:\Windows\assembly\Desktop.ini	618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1812 set thread context of 2692	1812	tmp.exe	89
PID 3696 set thread context of 3064	3696	618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4.exe	88
PID 3064 set thread context of 1800	3064	.exe	90

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly	618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4.exe
File created	C:\Windows\assembly\Desktop.ini	618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4.exe

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

System Information Discovery
T1082

NTFS ADS 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\Temp\vf45\b9876.exe:Zone.Identifier	cmd.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3696	618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4.exe
3696	618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4.exe
3696	618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4.exe
3696	618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4.exe
3696	618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4.exe
3696	618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3696	618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 3696 wrote to memory of 2024	3696	618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4.exe	84
PID 3696 wrote to memory of 2024	3696	618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4.exe	84
PID 3696 wrote to memory of 2024	3696	618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4.exe	84
PID 2024 wrote to memory of 1236	2024	cmd.exe	86
PID 2024 wrote to memory of 1236	2024	cmd.exe	86
PID 2024 wrote to memory of 1236	2024	cmd.exe	86
PID 3696 wrote to memory of 1812	3696	618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4.exe	87
PID 3696 wrote to memory of 1812	3696	618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4.exe	87
PID 3696 wrote to memory of 1812	3696	618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4.exe	87
PID 1812 wrote to memory of 2692	1812	tmp.exe	89
PID 1812 wrote to memory of 2692	1812	tmp.exe	89
PID 1812 wrote to memory of 2692	1812	tmp.exe	89
PID 1812 wrote to memory of 2692	1812	tmp.exe	89
PID 1812 wrote to memory of 2692	1812	tmp.exe	89
PID 1812 wrote to memory of 2692	1812	tmp.exe	89
PID 1812 wrote to memory of 2692	1812	tmp.exe	89
PID 1812 wrote to memory of 2692	1812	tmp.exe	89
PID 1812 wrote to memory of 2692	1812	tmp.exe	89
PID 3696 wrote to memory of 3064	3696	618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4.exe	88
PID 3696 wrote to memory of 3064	3696	618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4.exe	88
PID 3696 wrote to memory of 3064	3696	618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4.exe	88
PID 3696 wrote to memory of 3064	3696	618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4.exe	88
PID 3696 wrote to memory of 3064	3696	618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4.exe	88
PID 3696 wrote to memory of 3064	3696	618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4.exe	88
PID 3696 wrote to memory of 3064	3696	618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4.exe	88
PID 3696 wrote to memory of 3064	3696	618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4.exe	88
PID 3696 wrote to memory of 3064	3696	618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4.exe	88
PID 3064 wrote to memory of 1800	3064	.exe	90
PID 3064 wrote to memory of 1800	3064	.exe	90
PID 3064 wrote to memory of 1800	3064	.exe	90
PID 3064 wrote to memory of 1800	3064	.exe	90
PID 3064 wrote to memory of 1800	3064	.exe	90
PID 3064 wrote to memory of 1800	3064	.exe	90
PID 3064 wrote to memory of 1800	3064	.exe	90
PID 3064 wrote to memory of 1800	3064	.exe	90
PID 3064 wrote to memory of 1800	3064	.exe	90

C:\Users\Admin\AppData\Local\Temp\618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4.exe
"C:\Users\Admin\AppData\Local\Temp\618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4.exe"
1⤵
- Checks computer location settings
- Drops desktop.ini file(s)
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3696
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - NTFS ADS
  - Suspicious use of WriteProcessMemory
  PID:2024
- - C:\Windows\SysWOW64\reg.exe
    reg add "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Windows" /v Load /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\vf45\b9876.exe.lnk" /f
    3⤵
    PID:1236
- C:\Users\Admin\AppData\Roaming\tmp.exe
  "C:\Users\Admin\AppData\Roaming\tmp.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1812
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    PID:2692
- C:\Users\Admin\AppData\Local\Temp\.exe
  "C:\Users\Admin\AppData\Local\Temp\.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:3064
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    PID:1800

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

.exe

Path C:\Users\Admin\AppData\Local\Temp\.exe
Size 1.6MB
SHA256 e8b5da3394bbdd7868122ffd88d9d06afe31bd69d656857910d2f820c32d0efa
MD5 1c9ff7df71493896054a91bee0322ebf
SHA1 38f1c85965d58b910d8e8381b6b1099d5dfcbfe4
SHA512 aa0def62b663743e6c3c022182b35cff33cb9abf08453d5098f3c5d32b2a8b0cd1cc5de64b93e39680c1d1396fef1fd50b642ca3ea4ba1f6d1078321d96916ab
SSDEEP 24576:D2Jdi2osRvHJT8EZwpqy4JXxDsv6TRrgGdbG4VKMhyMvopZ:DMiQB8EZwmWv6TrGYXhyMvq
MD5 SHA1 SHA512 SSDEEP

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.exe

Path C:\Users\Admin\AppData\Local\Temp\.exe
Size 1.6MB
SHA256 e8b5da3394bbdd7868122ffd88d9d06afe31bd69d656857910d2f820c32d0efa
MD5 1c9ff7df71493896054a91bee0322ebf
SHA1 38f1c85965d58b910d8e8381b6b1099d5dfcbfe4
SHA512 aa0def62b663743e6c3c022182b35cff33cb9abf08453d5098f3c5d32b2a8b0cd1cc5de64b93e39680c1d1396fef1fd50b642ca3ea4ba1f6d1078321d96916ab
SSDEEP 24576:D2Jdi2osRvHJT8EZwpqy4JXxDsv6TRrgGdbG4VKMhyMvopZ:DMiQB8EZwmWv6TrGYXhyMvq
MD5 SHA1 SHA512 SSDEEP

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b9876.exe

Path C:\Users\Admin\AppData\Local\Temp\vf45\b9876.exe
Size 218KB
SHA256 618cc1db8b0225b15c13df19b184970c0dfc180415c572ee7a12433a106e41e4
MD5 25f290634a8092cc13820b1ade6ec33c
SHA1 3d4913172fedc50d9654effeab0fdcec9bb36014
SHA512 22d9aaa2ab0780eab101a7c387e491e36f9672c59dc4b97a92488685dc3b62e585d004d8550f44a17034dc12e2dc6f08a2406991418452cb01e417f2b5e6da29
SSDEEP 3072:Pq/4dJ1qTbxl++yWnIq80YQH2Hl4SsAB01lJ9w/X1RbP4UYljpqSqm:Pe4dJ1Ubxh9K0YQWFKTx96LgF
MD5 SHA1 SHA512 SSDEEP

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tmp.exe

Path C:\Users\Admin\AppData\Roaming\tmp.exe
Size 108KB
SHA256 71f4ff98b5c43912e39c9b68c0ae1ed894903e94756f41cf5631445499356527
MD5 07dafacf45c8e2fe217985a20c1ee89d
SHA1 f62ec5fdd8a397465399b8d20a9196ebbbfe5a1c
SHA512 08c3a614f2e44bde9610519e0f751f131d80d2dd1c4939921f1b4455d2e7095d96d0c21f9c854dcdc4abf0d1e20c2de4a9e2cb602367f7efa5f4c524909c4074
SSDEEP 3072:eFNUcekHxRkuHxSWMDUajQJf/p/itxBCBpEzImXnr+vHI+zIcdhrp5:eHUcLxRkuRSWMDUaGf/p/sxWpEzImXqL
MD5 SHA1 SHA512 SSDEEP

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tmp.exe

Path C:\Users\Admin\AppData\Roaming\tmp.exe
Size 108KB
SHA256 71f4ff98b5c43912e39c9b68c0ae1ed894903e94756f41cf5631445499356527
MD5 07dafacf45c8e2fe217985a20c1ee89d
SHA1 f62ec5fdd8a397465399b8d20a9196ebbbfe5a1c
SHA512 08c3a614f2e44bde9610519e0f751f131d80d2dd1c4939921f1b4455d2e7095d96d0c21f9c854dcdc4abf0d1e20c2de4a9e2cb602367f7efa5f4c524909c4074
SSDEEP 3072:eFNUcekHxRkuHxSWMDUajQJf/p/itxBCBpEzImXnr+vHI+zIcdhrp5:eHUcLxRkuRSWMDUaGf/p/sxWpEzImXqL
MD5 SHA1 SHA512 SSDEEP

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memory/3064-142-0x0000000000400000-0x000000000041B000-memory.dmp

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memory/3064-146-0x0000000000400000-0x000000000041B000-memory.dmp

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memory/3064-148-0x0000000000400000-0x000000000041B000-memory.dmp

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memory/3696-133-0x0000000074780000-0x0000000074D31000-memory.dmp

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memory/3696-134-0x0000000074780000-0x0000000074D31000-memory.dmp

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memory/3696-149-0x0000000074780000-0x0000000074D31000-memory.dmp

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