remcos | 49b1b72b78eee09213eb8e67fdd91ddbf426ea8bb0802a60b43110e663204f0a

General

Target

Account& Payment Transfer Details_pdf.exe
Size

944KB
MD5

6afe17d560555626a1cd4eec0f7fcf21
SHA1

a16f9b88160b6bd94312b70653ae17dd599a26cc
SHA256

49b1b72b78eee09213eb8e67fdd91ddbf426ea8bb0802a60b43110e663204f0a
SHA512

f90ec838020a6698ea5e2664bde2021cf9148c0e9c74b3c5d6bd49b413b76c4448bba044426afc22054d91379d6d10591b274b089eced8c69f3e8fc8e0e8f28a
SSDEEP

24576:SKMrb0I90mVbBhGrH1oiJ1QK1bgj8AVqco4VDwsc/8oG3Go:40I97PGreiHQK1lkDC/gGo

Score

10^/10

remcos remotehost rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

38.170.239.50:6192

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-5O631F
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 5 IoCs

pid	Process
880	Account& Payment Transfer Details_pdf.exe
880	Account& Payment Transfer Details_pdf.exe
880	Account& Payment Transfer Details_pdf.exe
880	Account& Payment Transfer Details_pdf.exe
880	Account& Payment Transfer Details_pdf.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
10	drive.google.com
11	drive.google.com

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
4364	Account& Payment Transfer Details_pdf.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
880	Account& Payment Transfer Details_pdf.exe
4364	Account& Payment Transfer Details_pdf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 880 set thread context of 4364	880	Account& Payment Transfer Details_pdf.exe	85

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Common Files\flyvedygtig.rom	Account& Payment Transfer Details_pdf.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\resources\0409\Benchmark.Uno	Account& Payment Transfer Details_pdf.exe

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

System Information Discovery
T1082

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
880	Account& Payment Transfer Details_pdf.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 880 wrote to memory of 4364	880	Account& Payment Transfer Details_pdf.exe	85
PID 880 wrote to memory of 4364	880	Account& Payment Transfer Details_pdf.exe	85
PID 880 wrote to memory of 4364	880	Account& Payment Transfer Details_pdf.exe	85
PID 880 wrote to memory of 4364	880	Account& Payment Transfer Details_pdf.exe	85
PID 880 wrote to memory of 4364	880	Account& Payment Transfer Details_pdf.exe	85

C:\Users\Admin\AppData\Local\Temp\Account& Payment Transfer Details_pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Account& Payment Transfer Details_pdf.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:880
- C:\Users\Admin\AppData\Local\Temp\Account& Payment Transfer Details_pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Account& Payment Transfer Details_pdf.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  PID:4364

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

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\nslBB52.tmp\LangDLL.dll

Filesize
5KB

MD5
3dd80dff583544514eeb3a5ed851a519

SHA1
56f7324d9d4230c96d1963e7b3e02b05a6cf5c24

SHA256
86cff5eaca76c49f924cb123d242fdcfd45ab99c4b638d3b8f4a8cfb1970ab5b

SHA512
955f4df195b5d134449904e9020f80125cfb64d70d9482ff583451f3fcb10d15577ceac4180f71a96452d8478f6365160ab15731f9a79a494383087c9310fd1d

Download Submit
C:\Users\Admin\AppData\Local\Temp\nslBB52.tmp\System.dll

Filesize
11KB

MD5
75ed96254fbf894e42058062b4b4f0d1

SHA1
996503f1383b49021eb3427bc28d13b5bbd11977

SHA256
a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7

SHA512
58174896db81d481947b8745dafe3a02c150f3938bb4543256e8cce1145154e016d481df9fe68dac6d48407c62cbe20753320ebd5fe5e84806d07ce78e0eb0c4

Download Submit
memory/880-27-0x0000000076FA1000-0x00000000770C1000-memory.dmp

Filesize
1.1MB

Download
memory/880-28-0x0000000073E04000-0x0000000073E05000-memory.dmp

Filesize
4KB

Download
memory/4364-50-0x0000000072BA0000-0x0000000073DF4000-memory.dmp

Filesize
18.3MB

Download
memory/4364-53-0x0000000072BA0000-0x0000000073DF4000-memory.dmp

Filesize
18.3MB

Download
memory/4364-43-0x0000000072BA0000-0x0000000073DF4000-memory.dmp

Filesize
18.3MB

Download
memory/4364-47-0x0000000000470000-0x000000000621D000-memory.dmp

Filesize
93.7MB

Download
memory/4364-48-0x0000000072BA0000-0x0000000073DF4000-memory.dmp

Filesize
18.3MB

Download
memory/4364-49-0x0000000076FA1000-0x00000000770C1000-memory.dmp

Filesize
1.1MB

Download
memory/4364-29-0x0000000077028000-0x0000000077029000-memory.dmp

Filesize
4KB

Download
memory/4364-51-0x0000000072BA0000-0x0000000073DF4000-memory.dmp

Filesize
18.3MB

Download
memory/4364-52-0x0000000072BA0000-0x0000000073DF4000-memory.dmp

Filesize
18.3MB

Download
memory/4364-30-0x0000000077045000-0x0000000077046000-memory.dmp

Filesize
4KB

Download
memory/4364-54-0x0000000072BA0000-0x0000000073DF4000-memory.dmp

Filesize
18.3MB

Download
memory/4364-55-0x0000000072BA0000-0x0000000073DF4000-memory.dmp

Filesize
18.3MB

Download
memory/4364-56-0x0000000072BA0000-0x0000000073DF4000-memory.dmp

Filesize
18.3MB

Download
memory/4364-57-0x0000000072BA0000-0x0000000073DF4000-memory.dmp

Filesize
18.3MB

Download
memory/4364-58-0x0000000072BA0000-0x0000000073DF4000-memory.dmp

Filesize
18.3MB

Download
memory/4364-59-0x0000000072BA0000-0x0000000073DF4000-memory.dmp

Filesize
18.3MB

Download
memory/4364-60-0x0000000072BA0000-0x0000000073DF4000-memory.dmp

Filesize
18.3MB

Download

Analysis

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