remcos | 7bc9fa8056deebc3e07c99a32de955e4ba85fc6f16be40c919ac0aaf6da374bb

General

Target

7bc9fa8056deebc3e07c99a32de955e4ba85fc6f16be40c919ac0aaf6da374bb.exe
Size

641KB
MD5

3e49690624909006408eb3769fa7f175
SHA1

abb5e4fdbb5274a2d7bae7a9ac1901bd15912816
SHA256

7bc9fa8056deebc3e07c99a32de955e4ba85fc6f16be40c919ac0aaf6da374bb
SHA512

e85a9ba34161142f4b5e7b8f6c4145fdb284557953ed4150a34645b8afe9f76f59d539dccf14f2209634642332ed11cbfc62aa799bd4218c37e0bd7f3a8eead2
SSDEEP

12288:cfHo7Uwr+hSe9kMIkbGb9xeegs30ZNPlbbO3qtgCE++k:yHifsk/ki9xeVNPlgoZD

Score

10^/10

remcos benchao discovery rat

Malware Config

Extracted

Family

remcos

Botnet

benchao

C2

tochisglobal.ddns.net:6426

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-9R4HLX
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

Loads dropped DLL 7 IoCs

pid	Process
888	7bc9fa8056deebc3e07c99a32de955e4ba85fc6f16be40c919ac0aaf6da374bb.exe
888	7bc9fa8056deebc3e07c99a32de955e4ba85fc6f16be40c919ac0aaf6da374bb.exe
888	7bc9fa8056deebc3e07c99a32de955e4ba85fc6f16be40c919ac0aaf6da374bb.exe
888	7bc9fa8056deebc3e07c99a32de955e4ba85fc6f16be40c919ac0aaf6da374bb.exe
888	7bc9fa8056deebc3e07c99a32de955e4ba85fc6f16be40c919ac0aaf6da374bb.exe
888	7bc9fa8056deebc3e07c99a32de955e4ba85fc6f16be40c919ac0aaf6da374bb.exe
888	7bc9fa8056deebc3e07c99a32de955e4ba85fc6f16be40c919ac0aaf6da374bb.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\historiebgernes\periscopal.ini	7bc9fa8056deebc3e07c99a32de955e4ba85fc6f16be40c919ac0aaf6da374bb.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
3576	wab.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
888	7bc9fa8056deebc3e07c99a32de955e4ba85fc6f16be40c919ac0aaf6da374bb.exe
3576	wab.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 888 set thread context of 3576	888	7bc9fa8056deebc3e07c99a32de955e4ba85fc6f16be40c919ac0aaf6da374bb.exe	97

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Seqwl.lnk	7bc9fa8056deebc3e07c99a32de955e4ba85fc6f16be40c919ac0aaf6da374bb.exe
File opened for modification	C:\Program Files (x86)\Seqwl.lnk	7bc9fa8056deebc3e07c99a32de955e4ba85fc6f16be40c919ac0aaf6da374bb.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\resources\0409\antarctic.Ord	7bc9fa8056deebc3e07c99a32de955e4ba85fc6f16be40c919ac0aaf6da374bb.exe
File opened for modification	C:\Windows\Fonts\stricker.lav	7bc9fa8056deebc3e07c99a32de955e4ba85fc6f16be40c919ac0aaf6da374bb.exe
File opened for modification	C:\Windows\Fonts\Fragtskibet\sammenhobende.tus	7bc9fa8056deebc3e07c99a32de955e4ba85fc6f16be40c919ac0aaf6da374bb.exe
File opened for modification	C:\Windows\resources\0409\gdskning\anaesthesia.vit	7bc9fa8056deebc3e07c99a32de955e4ba85fc6f16be40c919ac0aaf6da374bb.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 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	7bc9fa8056deebc3e07c99a32de955e4ba85fc6f16be40c919ac0aaf6da374bb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wab.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
888	7bc9fa8056deebc3e07c99a32de955e4ba85fc6f16be40c919ac0aaf6da374bb.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3576	wab.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 888 wrote to memory of 3576	888	7bc9fa8056deebc3e07c99a32de955e4ba85fc6f16be40c919ac0aaf6da374bb.exe	97
PID 888 wrote to memory of 3576	888	7bc9fa8056deebc3e07c99a32de955e4ba85fc6f16be40c919ac0aaf6da374bb.exe	97
PID 888 wrote to memory of 3576	888	7bc9fa8056deebc3e07c99a32de955e4ba85fc6f16be40c919ac0aaf6da374bb.exe	97
PID 888 wrote to memory of 3576	888	7bc9fa8056deebc3e07c99a32de955e4ba85fc6f16be40c919ac0aaf6da374bb.exe	97
PID 888 wrote to memory of 3576	888	7bc9fa8056deebc3e07c99a32de955e4ba85fc6f16be40c919ac0aaf6da374bb.exe	97

C:\Users\Admin\AppData\Local\Temp\7bc9fa8056deebc3e07c99a32de955e4ba85fc6f16be40c919ac0aaf6da374bb.exe
"C:\Users\Admin\AppData\Local\Temp\7bc9fa8056deebc3e07c99a32de955e4ba85fc6f16be40c919ac0aaf6da374bb.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:888
- C:\Program Files (x86)\windows mail\wab.exe
  "C:\Users\Admin\AppData\Local\Temp\7bc9fa8056deebc3e07c99a32de955e4ba85fc6f16be40c919ac0aaf6da374bb.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:3576

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Seqwl.lnk

Filesize
996B

MD5
9e6f2a324eb882143d419183e8c2bfe4

SHA1
5f3a3548b26d4c4e878dc8c892d384d374a0517f

SHA256
561d6c584f5805e784f26eebc830746bdd973210b71cd1194a643e4a654f6097

SHA512
d247ee39ecb4fc27fc9942fd1bb8215e71dfb7aa21567b7b5d181aaa282c2abc73e45aaa26162c2be5d67bba00d1c1b1efbf7c7dc375d0a5985ff069c09e76f9

Download Submit
C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
d4c786f23192aa0609edb3c35cea56f0

SHA1
db937327593090fc9568a623be79cc23ca362fe2

SHA256
71dd6ab3b7477ab660a0726c8f2aeaf475996b182b14993c6577f4091a028a5e

SHA512
85b55bdc66a55263db7ba6a111611eccd950d16fb80aa038b7e040f673639420d69d4a4da1565d8e79dc03e93c1c8d4bfdced886f5b249603909a06f72e4bcd6

Download Submit
C:\Users\Admin\AppData\Local\Temp\nskDFE1.tmp\LangDLL.dll

Filesize
5KB

MD5
232f16c1cb21335fbce6f78ddaf2458c

SHA1
1c5981b852b3b640c98547074bda081c38859c3f

SHA256
507df75c959e1c9a89febb3f5d5963539895d9a602f4e6ca7898079919a83352

SHA512
cb8fb45ffe04e759816cb931223aafa42c15e58f1b35717f59a14c665aa94b48c393ff1a18ac480165ab090fed9226111ae2c3f4e9aead413a105c6f15515227

Download Submit
C:\Users\Admin\AppData\Local\Temp\nskDFE1.tmp\System.dll

Filesize
12KB

MD5
d6f54d2cefdf58836805796f55bfc846

SHA1
b980addc1a755b968dd5799179d3b4f1c2de9d2d

SHA256
f917aef484d1fbb4d723b2e2d3045cb6f5f664e61fbb3d5c577bd1c215de55d9

SHA512
ce67da936a93d46ef7e81abc8276787c82fd844c03630ba18afc3528c7e420c3228bfe82aeda083bb719f2d1314afae913362abd1e220cb364606519690d45db

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\edelgave.ini

Filesize
37B

MD5
3c65c480cb76aed4490bdad661de772f

SHA1
fc958ead2e23238bdbf62a685786f48fb82fb579

SHA256
362c08bc271b256001720882dea6b6ea8bb7ba7a330f59c86d2353266c59c932

SHA512
0629e4cb1fa3b58ea4f3773a54616c6f1d9336e295154d7a8d9bbb7bd9c5bcbc82babb369ea0f658b1dca4533fb5a377f750ef0bde137dd30949ad3264ad9d5e

Download Submit
memory/888-911-0x00000000775E1000-0x0000000077701000-memory.dmp

Filesize
1.1MB

Download
memory/888-912-0x0000000073CD5000-0x0000000073CD6000-memory.dmp

Filesize
4KB

Download
memory/3576-921-0x0000000000C20000-0x0000000001E74000-memory.dmp

Filesize
18.3MB

Download
memory/3576-930-0x0000000000C20000-0x0000000001E74000-memory.dmp

Filesize
18.3MB

Download
memory/3576-919-0x00000000775E1000-0x0000000077701000-memory.dmp

Filesize
1.1MB

Download
memory/3576-914-0x0000000077685000-0x0000000077686000-memory.dmp

Filesize
4KB

Download
memory/3576-924-0x0000000000C20000-0x0000000001E74000-memory.dmp

Filesize
18.3MB

Download
memory/3576-927-0x0000000000C20000-0x0000000001E74000-memory.dmp

Filesize
18.3MB

Download
memory/3576-913-0x0000000077668000-0x0000000077669000-memory.dmp

Filesize
4KB

Download
memory/3576-915-0x0000000000C20000-0x0000000001E74000-memory.dmp

Filesize
18.3MB

Download
memory/3576-933-0x0000000000C20000-0x0000000001E74000-memory.dmp

Filesize
18.3MB

Download
memory/3576-936-0x0000000000C20000-0x0000000001E74000-memory.dmp

Filesize
18.3MB

Download
memory/3576-939-0x0000000000C20000-0x0000000001E74000-memory.dmp

Filesize
18.3MB

Download
memory/3576-942-0x0000000000C20000-0x0000000001E74000-memory.dmp

Filesize
18.3MB

Download
memory/3576-945-0x0000000000C20000-0x0000000001E74000-memory.dmp

Filesize
18.3MB

Download
memory/3576-948-0x0000000000C20000-0x0000000001E74000-memory.dmp

Filesize
18.3MB

Download
memory/3576-951-0x0000000000C20000-0x0000000001E74000-memory.dmp

Filesize
18.3MB

Download

Analysis

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