remcos | 79e70809a85e291f9da3d391131208ce7645dd512eb6bb71811154b43da23222

General

Target

a96067cac28b1f5c3de4e1b6c7d0a402_JaffaCakes118.exe
Size

233KB
MD5

a96067cac28b1f5c3de4e1b6c7d0a402
SHA1

51c65c8ece4bfd5c7d1b09105440f3f02d3b14ca
SHA256

79e70809a85e291f9da3d391131208ce7645dd512eb6bb71811154b43da23222
SHA512

1627058a9a884965bce4ece1ccf03c24a849cd79fe883c923ae2eb56c8e0bbb730cf823e550c080685af1f906a38f2847a65dc8ed236181d97eee9ddcfc3f96e
SSDEEP

6144:SqjIxGscXRNClwLJwAEZgVWnjNBjKTkst:jDduKmLyr

Score

10^/10

remcos remotehost discovery persistence 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
2520	a96067cac28b1f5c3de4e1b6c7d0a402_JaffaCakes118.exe
2520	a96067cac28b1f5c3de4e1b6c7d0a402_JaffaCakes118.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz = "C:\\Users\\Admin\\AppData\\Roaming\\abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstu"	a96067cac28b1f5c3de4e1b6c7d0a402_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2520 set thread context of 912	2520	a96067cac28b1f5c3de4e1b6c7d0a402_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	a96067cac28b1f5c3de4e1b6c7d0a402_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a96067cac28b1f5c3de4e1b6c7d0a402_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2520	a96067cac28b1f5c3de4e1b6c7d0a402_JaffaCakes118.exe
2520	a96067cac28b1f5c3de4e1b6c7d0a402_JaffaCakes118.exe
2520	a96067cac28b1f5c3de4e1b6c7d0a402_JaffaCakes118.exe
2520	a96067cac28b1f5c3de4e1b6c7d0a402_JaffaCakes118.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2520	a96067cac28b1f5c3de4e1b6c7d0a402_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
912	a96067cac28b1f5c3de4e1b6c7d0a402_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2520 wrote to memory of 912	2520	a96067cac28b1f5c3de4e1b6c7d0a402_JaffaCakes118.exe	30
PID 2520 wrote to memory of 912	2520	a96067cac28b1f5c3de4e1b6c7d0a402_JaffaCakes118.exe	30
PID 2520 wrote to memory of 912	2520	a96067cac28b1f5c3de4e1b6c7d0a402_JaffaCakes118.exe	30
PID 2520 wrote to memory of 912	2520	a96067cac28b1f5c3de4e1b6c7d0a402_JaffaCakes118.exe	30
PID 2520 wrote to memory of 912	2520	a96067cac28b1f5c3de4e1b6c7d0a402_JaffaCakes118.exe	30

C:\Users\Admin\AppData\Local\Temp\a96067cac28b1f5c3de4e1b6c7d0a402_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a96067cac28b1f5c3de4e1b6c7d0a402_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2520
- C:\Users\Admin\AppData\Local\Temp\a96067cac28b1f5c3de4e1b6c7d0a402_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\a96067cac28b1f5c3de4e1b6c7d0a402_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:912

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

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
48bba21eb49fe7dedb6176940318819c

SHA1
360ffc76a56021ab30a4f678c61c688538ba0d67

SHA256
c92c2faf38fc5144ca13a6edf1f5b16497f3e25b8c1b52b5de89881942f21c2a

SHA512
ea96f29fa552015f27dd3f1a92ef7df1158ab45be6a4309282b34714e50b8c8bacf3dc5fac75749b16179d1ffd3dc2b4e6c809749c6e062c8334d22c0f0edf54

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

Filesize
16KB

MD5
ff98a06930bd4c0a11500f2378f23ffa

SHA1
c25a3da1562f0dc0247140ff8636c88a843e9a66

SHA256
97cc714ecc6d201ff90e6947bedf9345dd9f0abffaa0687607d216f4567dfbd9

SHA512
8e33d253610a07c6603c6da9714bc18f2b9a6f3e229fd5d9873783ce842214689e3296bb37864720ca561a74b72beb5f7852ae3a732f4ec85c046646acd25916

Download Submit
\Users\Admin\AppData\Local\Temp\nszE448.tmp\System.dll

Filesize
11KB

MD5
fccff8cb7a1067e23fd2e2b63971a8e1

SHA1
30e2a9e137c1223a78a0f7b0bf96a1c361976d91

SHA256
6fcea34c8666b06368379c6c402b5321202c11b00889401c743fb96c516c679e

SHA512
f4335e84e6f8d70e462a22f1c93d2998673a7616c868177cac3e8784a3be1d7d0bb96f2583fa0ed82f4f2b6b8f5d9b33521c279a42e055d80a94b4f3f1791e0c

Download Submit
memory/912-31-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/912-33-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/912-17-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/912-18-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/912-19-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/912-22-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/912-24-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/912-25-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/912-29-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/912-14-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/912-50-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/912-49-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/912-35-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/912-36-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/912-38-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/912-41-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/912-43-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/912-45-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/912-47-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2520-16-0x0000000010000000-0x0000000010007000-memory.dmp

Filesize
28KB

Download
memory/2520-11-0x0000000010000000-0x0000000010007000-memory.dmp

Filesize
28KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads