remcos | 790266f679f399a10b26371ab1cf17292a9586bca0bc52c97f13d965b78911a8

General

Target

fea69467c888c64067f4513af860c98a_JaffaCakes118.exe
Size

234KB
MD5

fea69467c888c64067f4513af860c98a
SHA1

c9966ac55d24ee280f13a17c221d116cdbc67634
SHA256

790266f679f399a10b26371ab1cf17292a9586bca0bc52c97f13d965b78911a8
SHA512

a33b7e8d4bf788735587e4e046c5ab784f55e0b8b2025dccfd998c5150ddde197b682ca646db5bdfb5ffc5fcac21feee9d3c2cf6ed2918faf7b7ce42b38cf01d
SSDEEP

6144:iqjIGiY3j0ZwuKskNHeZGevUAlLOHaRA99C2lkt:zu19Ks4+vzuaa9M

Score

10^/10

remcos remotehost discovery rat

Malware Config

Extracted

Family

remcos

Version

2.7.2 Pro

Botnet

RemoteHost

C2

103.89.88.238:4299

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-8OHAVR
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
2808	fea69467c888c64067f4513af860c98a_JaffaCakes118.exe
2808	fea69467c888c64067f4513af860c98a_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2808 set thread context of 2768	2808	fea69467c888c64067f4513af860c98a_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	fea69467c888c64067f4513af860c98a_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fea69467c888c64067f4513af860c98a_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2808	fea69467c888c64067f4513af860c98a_JaffaCakes118.exe
2808	fea69467c888c64067f4513af860c98a_JaffaCakes118.exe
2808	fea69467c888c64067f4513af860c98a_JaffaCakes118.exe
2808	fea69467c888c64067f4513af860c98a_JaffaCakes118.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2808	fea69467c888c64067f4513af860c98a_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2768	fea69467c888c64067f4513af860c98a_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2808 wrote to memory of 2768	2808	fea69467c888c64067f4513af860c98a_JaffaCakes118.exe	30
PID 2808 wrote to memory of 2768	2808	fea69467c888c64067f4513af860c98a_JaffaCakes118.exe	30
PID 2808 wrote to memory of 2768	2808	fea69467c888c64067f4513af860c98a_JaffaCakes118.exe	30
PID 2808 wrote to memory of 2768	2808	fea69467c888c64067f4513af860c98a_JaffaCakes118.exe	30
PID 2808 wrote to memory of 2768	2808	fea69467c888c64067f4513af860c98a_JaffaCakes118.exe	30

C:\Users\Admin\AppData\Local\Temp\fea69467c888c64067f4513af860c98a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fea69467c888c64067f4513af860c98a_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:2808
- C:\Users\Admin\AppData\Local\Temp\fea69467c888c64067f4513af860c98a_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\fea69467c888c64067f4513af860c98a_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2768

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:\Users\Admin\AppData\Local\Temp\u5qfpyjy2p.dll

Filesize
17KB

MD5
40ec87b2fe39097f68409834c4d79d6f

SHA1
1efafb59ff23847310944327b87442be7a2e9068

SHA256
5567d4c9d8fba6f4b05e80835e85f854d056c2b863861af136164f1941322d86

SHA512
012742ef15eaa547bac6c59d92367e8ab004dca528651f8428d554e5351522ef777b6e73de26e285fd327cc5c171829727313c477c3cdbd6df6c8334f30d9b36

Download Submit
C:\Users\Admin\AppData\Roaming\excel\logs.dat

Filesize
74B

MD5
cecd6797fd83ea3b3f553c2f8014aa45

SHA1
a51ce34fb020d41b0474fadc3f4707c0c09f2b89

SHA256
e7fd01cd27ca968c971f5b9661cfceaf665d47858c6c238555cde165391830ac

SHA512
99cba379db534df3dc39b0099c1ea59c6795451e034597d61470ba16fa242c241ad6308aac334ec84260cef8f512df26fd0d2974f3c6a56c05d2f632cf6a595e

Download Submit
\Users\Admin\AppData\Local\Temp\nst784C.tmp\System.dll

Filesize
11KB

MD5
fccff8cb7a1067e23fd2e2b63971a8e1

SHA1
30e2a9e137c1223a78a0f7b0bf96a1c361976d91

SHA256
6fcea34c8666b06368379c6c402b5321202c11b00889401c743fb96c516c679e

SHA512
f4335e84e6f8d70e462a22f1c93d2998673a7616c868177cac3e8784a3be1d7d0bb96f2583fa0ed82f4f2b6b8f5d9b33521c279a42e055d80a94b4f3f1791e0c

Download Submit
memory/2768-35-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2768-30-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2768-49-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2768-17-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2768-18-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2768-21-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2768-23-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2768-24-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2768-26-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2768-15-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2768-13-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2768-32-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2768-48-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2768-37-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2768-42-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2768-44-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2768-46-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2808-12-0x0000000074BF0000-0x0000000074BF9000-memory.dmp

Filesize
36KB

Download
memory/2808-16-0x0000000074BF0000-0x0000000074BF9000-memory.dmp

Filesize
36KB

Download

Analysis

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