remcos | a217f639b91625bff1a888e42aafaf1d69a3b04bd4b4f83b29fa12b04903fd42

General

Target

PJ-24-PCBN0190.exe
Size

506KB
MD5

391eb6e1d6d588a51adc83ccf70fbaca
SHA1

e4154f4786be22e960fe94abd39caadbbcd29745
SHA256

7c5e6bd087ef9714cfaf90856d1db5a5cf8bab4d7f1688a214a4b3b90014476b
SHA512

bc5cf53b786e5752be814271c09d25cd16aa3a44ee0bec177465f8d5fdbaac8be82642fdfbbc6f0398aa815597ed27ba53a78a44cc2de25fc87aec905a248620
SSDEEP

12288:9o+VIWBonT8umPHsk2kpMkOFd9/vnUL5IyaXXPF:O+VIWCnT8dPskdq9/vUlGPF

Score

10^/10

remcos remotehost discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

38.132.122.173:2404

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-78GP4R
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 1 IoCs

pid	Process
1936	PJ-24-PCBN0190.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
1156	PJ-24-PCBN0190.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1936	PJ-24-PCBN0190.exe
1156	PJ-24-PCBN0190.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1936 set thread context of 1156	1936	PJ-24-PCBN0190.exe	94

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	PJ-24-PCBN0190.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PJ-24-PCBN0190.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1936	PJ-24-PCBN0190.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1156	PJ-24-PCBN0190.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1936 wrote to memory of 1156	1936	PJ-24-PCBN0190.exe	94
PID 1936 wrote to memory of 1156	1936	PJ-24-PCBN0190.exe	94
PID 1936 wrote to memory of 1156	1936	PJ-24-PCBN0190.exe	94
PID 1936 wrote to memory of 1156	1936	PJ-24-PCBN0190.exe	94
PID 1936 wrote to memory of 1156	1936	PJ-24-PCBN0190.exe	94

C:\Users\Admin\AppData\Local\Temp\PJ-24-PCBN0190.exe
"C:\Users\Admin\AppData\Local\Temp\PJ-24-PCBN0190.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1936
- C:\Users\Admin\AppData\Local\Temp\PJ-24-PCBN0190.exe
  "C:\Users\Admin\AppData\Local\Temp\PJ-24-PCBN0190.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:1156

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=3804,i,3387628439405076340,17957358341235678872,262144 --variations-seed-version --mojo-platform-channel-handle=4220 /prefetch:8
1⤵
PID:3632

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:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
cf85a603bf3dd1a4c3df96225a41314a

SHA1
f7b21fa514f7782fd2b3e7d5d08a3fd6cc3076cd

SHA256
76dc5d01062d3d92f1d51475ed0e652167f217ddaf0c2250f9c8494e7c86f323

SHA512
b3efe4eae85150a6e3a54a39506a0607fec2ac61ba2f9c600f734afb7d1812ecbc8eaa2374aa10581b67ef5bfbd3c33dd30a6fa23bd22cb7b4da2fb6fb2a1524

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsb6D6C.tmp\System.dll

Filesize
11KB

MD5
3f176d1ee13b0d7d6bd92e1c7a0b9bae

SHA1
fe582246792774c2c9dd15639ffa0aca90d6fd0b

SHA256
fa4ab1d6f79fd677433a31ada7806373a789d34328da46ccb0449bbf347bd73e

SHA512
0a69124819b7568d0dea4e9e85ce8fe61c7ba697c934e3a95e2dcfb9f252b1d9da7faf8774b6e8efd614885507acc94987733eba09a2f5e7098b774dfc8524b6

Download Submit
memory/1156-28-0x0000000076FA1000-0x00000000770C1000-memory.dmp

Filesize
1.1MB

Download
memory/1156-25-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/1156-14-0x0000000077028000-0x0000000077029000-memory.dmp

Filesize
4KB

Download
memory/1156-15-0x0000000077045000-0x0000000077046000-memory.dmp

Filesize
4KB

Download
memory/1156-16-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/1156-17-0x0000000076FA1000-0x00000000770C1000-memory.dmp

Filesize
1.1MB

Download
memory/1156-45-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/1156-42-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/1156-29-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/1156-33-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/1156-36-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/1156-39-0x0000000000460000-0x00000000016B4000-memory.dmp

Filesize
18.3MB

Download
memory/1936-11-0x0000000076FA1000-0x00000000770C1000-memory.dmp

Filesize
1.1MB

Download
memory/1936-13-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download
memory/1936-12-0x0000000076FA1000-0x00000000770C1000-memory.dmp

Filesize
1.1MB

Download

Analysis

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