remcos | 8a59bb0e1678af1df0b5d32e17ecc543310876b8b27ed18350ffced305ac32bd

General

Target

ef2c38594f17cccbebb0bb3552caccb4_JaffaCakes118.exe
Size

241KB
MD5

ef2c38594f17cccbebb0bb3552caccb4
SHA1

de841758e2b10290e519b3629d3b2f97acb3d135
SHA256

8a59bb0e1678af1df0b5d32e17ecc543310876b8b27ed18350ffced305ac32bd
SHA512

5617b1bf9ad9ab97d0668b1254b65e6d54ccfcca9c4a05fe5479d60533ee23bd32eefda9c607e6650d4dbfac7b5f1f27be33acb60832b25a39584963ee6d6ed5
SSDEEP

6144:Vx/MeWig4JNHT9F40FDostSmg8+NJbnwiRWBUYTE:LC3ONHTxFDFgFzVRQUj

Score

10^/10

remcos money-logs discovery rat

Malware Config

Extracted

Family

remcos

Version

2.7.2 Pro

Botnet

MONEY-LOGS

C2

103.153.76.111:2667

Attributes

audio_folder
MicRecords
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
EXCEL.exe
copy_folder
EXCEL
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
EXCEL
keylog_path
%AppData%
mouse_option
false
mutex
EXCEL-T1QMJO
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
EXCEL
take_screenshot_option
false
take_screenshot_time
5
take_screenshot_title
wikipedia;solitaire;

Signatures

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

Loads dropped DLL 2 IoCs

pid	Process
3056	ef2c38594f17cccbebb0bb3552caccb4_JaffaCakes118.exe
3056	ef2c38594f17cccbebb0bb3552caccb4_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3056 set thread context of 1740	3056	ef2c38594f17cccbebb0bb3552caccb4_JaffaCakes118.exe	30

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	ef2c38594f17cccbebb0bb3552caccb4_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ef2c38594f17cccbebb0bb3552caccb4_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3056	ef2c38594f17cccbebb0bb3552caccb4_JaffaCakes118.exe
3056	ef2c38594f17cccbebb0bb3552caccb4_JaffaCakes118.exe
3056	ef2c38594f17cccbebb0bb3552caccb4_JaffaCakes118.exe
3056	ef2c38594f17cccbebb0bb3552caccb4_JaffaCakes118.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3056	ef2c38594f17cccbebb0bb3552caccb4_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1740	ef2c38594f17cccbebb0bb3552caccb4_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3056 wrote to memory of 1740	3056	ef2c38594f17cccbebb0bb3552caccb4_JaffaCakes118.exe	30
PID 3056 wrote to memory of 1740	3056	ef2c38594f17cccbebb0bb3552caccb4_JaffaCakes118.exe	30
PID 3056 wrote to memory of 1740	3056	ef2c38594f17cccbebb0bb3552caccb4_JaffaCakes118.exe	30
PID 3056 wrote to memory of 1740	3056	ef2c38594f17cccbebb0bb3552caccb4_JaffaCakes118.exe	30
PID 3056 wrote to memory of 1740	3056	ef2c38594f17cccbebb0bb3552caccb4_JaffaCakes118.exe	30

C:\Users\Admin\AppData\Local\Temp\ef2c38594f17cccbebb0bb3552caccb4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ef2c38594f17cccbebb0bb3552caccb4_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3056
- C:\Users\Admin\AppData\Local\Temp\ef2c38594f17cccbebb0bb3552caccb4_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\ef2c38594f17cccbebb0bb3552caccb4_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:1740

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\EXCEL\logs.dat

Filesize
74B

MD5
e03c7a51b9f6b261e56647dfa89e96a6

SHA1
3c6425c34f9cef5ccd4b86ca454ca047db52f064

SHA256
388ff6cf2fa296ede2e2a498b069adab8c19036b46ac07f9ebfd30a6edd9bcf7

SHA512
007e445747bcd2859dabeae1ec15be18683cf8d125d0655f65a34f0577edffa395035fb32cee294bab482ca731477f445f384f890affaad8dd804881cda788d0

Download Submit
\Users\Admin\AppData\Local\Temp\jdiqrg82pzye5z.dll

Filesize
21KB

MD5
aadaaa353372e70ccfe4d4f4c1bbd1f7

SHA1
54d48dd123c7ec8b61e35044b77520cee3b4d448

SHA256
75591a435b4d7f1ad7ade1a931219529d86a1f66944e3dced39c361f0a8f6321

SHA512
5af3ea7e9ddb43322322fcba69bc21b959481f1962a3a47b46b9ce38f716c1fe47a57204f0bd0a4c0bf9de1ffc60b0db43b95cb3129afa85c3c6837e3f21fb9b

Download Submit
\Users\Admin\AppData\Local\Temp\nsy9435.tmp\System.dll

Filesize
11KB

MD5
fccff8cb7a1067e23fd2e2b63971a8e1

SHA1
30e2a9e137c1223a78a0f7b0bf96a1c361976d91

SHA256
6fcea34c8666b06368379c6c402b5321202c11b00889401c743fb96c516c679e

SHA512
f4335e84e6f8d70e462a22f1c93d2998673a7616c868177cac3e8784a3be1d7d0bb96f2583fa0ed82f4f2b6b8f5d9b33521c279a42e055d80a94b4f3f1791e0c

Download Submit
memory/1740-20-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1740-23-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1740-15-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1740-16-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1740-17-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1740-12-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1740-22-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1740-49-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1740-27-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1740-45-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1740-31-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1740-34-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1740-39-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3056-11-0x0000000010000000-0x0000000010008000-memory.dmp

Filesize
32KB

Download
memory/3056-14-0x0000000010000000-0x0000000010008000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing