remcos | 644f8bf83d861db06b736b1d5e541e35d3eae75a74d6f2561fa26a9a271a2c2b

General

Target

JaffaCakes118_644f8bf83d861db06b736b1d5e541e35d3eae75a74d6f2561fa26a9a271a2c2b.exe
Size

656.6MB
MD5

43a4ce40b5f06ddce984176ae6c89058
SHA1

3f7a5ff95f676f15e677e529aef734c512ab7464
SHA256

644f8bf83d861db06b736b1d5e541e35d3eae75a74d6f2561fa26a9a271a2c2b
SHA512

bfe38667b779d8791ac8da36cfc9b40e67283f93cb4589bb0c1360cffde7605eda9cdeff9d2cc06dc19468e820e121af0d12d43ac81ac7e3ab29402016aec195
SSDEEP

12288:RqeSPxZHRI0aF3IBXDPdQWatLHNn63r/iyAAb8T3rUUUIyPf:RaPhITRA+XtLtn6NAAgT3ZyPf

Score

10^/10

remcos hosts discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

hosts

C2

101.99.91.158:5222

94.131.99.153:8080

124.88.67.67:5222

124.88.67.98:5222

94.131.99.153:5222

94.131.99.156:5222

94.131.99.89:5222

94.131.99.56:5222

178.23.190.252:8080

178.23.190.253:8080

178.23.190.254:8080

178.23.190.54:8080

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
sql.exe
copy_folder
sql
delete_file
false
hide_file
true
hide_keylog_file
false
install_flag
true
install_path
%UserProfile%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rgh-LGM50O
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
skype_upd
take_screenshot_option
false
take_screenshot_time
5

Signatures

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

Adds policy Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\skype_upd = "\"C:\\Users\\Admin\\sql\\sql.exe\""	2.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	sql.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\skype_upd = "\"C:\\Users\\Admin\\sql\\sql.exe\""	sql.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	2.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	JaffaCakes118_644f8bf83d861db06b736b1d5e541e35d3eae75a74d6f2561fa26a9a271a2c2b.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	2.exe

Executes dropped EXE 2 IoCs

pid	Process
4128	2.exe
2484	sql.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\skype_upd = "\"C:\\Users\\Admin\\sql\\sql.exe\""	2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\skype_upd = "\"C:\\Users\\Admin\\sql\\sql.exe\""	2.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\skype_upd = "\"C:\\Users\\Admin\\sql\\sql.exe\""	sql.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\skype_upd = "\"C:\\Users\\Admin\\sql\\sql.exe\""	sql.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2484 set thread context of 756	2484	sql.exe	84

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 4 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	JaffaCakes118_644f8bf83d861db06b736b1d5e541e35d3eae75a74d6f2561fa26a9a271a2c2b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sql.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iexplore.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	2.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2484	sql.exe
2484	sql.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2484	sql.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3172 wrote to memory of 4128	3172	JaffaCakes118_644f8bf83d861db06b736b1d5e541e35d3eae75a74d6f2561fa26a9a271a2c2b.exe	82
PID 3172 wrote to memory of 4128	3172	JaffaCakes118_644f8bf83d861db06b736b1d5e541e35d3eae75a74d6f2561fa26a9a271a2c2b.exe	82
PID 3172 wrote to memory of 4128	3172	JaffaCakes118_644f8bf83d861db06b736b1d5e541e35d3eae75a74d6f2561fa26a9a271a2c2b.exe	82
PID 4128 wrote to memory of 2484	4128	2.exe	83
PID 4128 wrote to memory of 2484	4128	2.exe	83
PID 4128 wrote to memory of 2484	4128	2.exe	83
PID 2484 wrote to memory of 756	2484	sql.exe	84
PID 2484 wrote to memory of 756	2484	sql.exe	84
PID 2484 wrote to memory of 756	2484	sql.exe	84
PID 2484 wrote to memory of 756	2484	sql.exe	84

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_644f8bf83d861db06b736b1d5e541e35d3eae75a74d6f2561fa26a9a271a2c2b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_644f8bf83d861db06b736b1d5e541e35d3eae75a74d6f2561fa26a9a271a2c2b.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3172
- C:\Users\Admin\AppData\Local\Temp\2.exe
  "C:\Users\Admin\AppData\Local\Temp\2.exe"
  2⤵
  - Adds policy Run key to start application
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:4128
- - C:\Users\Admin\sql\sql.exe
    "C:\Users\Admin\sql\sql.exe"
    3⤵
    - Adds policy Run key to start application
    - Executes dropped EXE
    - 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:2484
  - - \??\c:\program files (x86)\internet explorer\iexplore.exe
      "c:\program files (x86)\internet explorer\iexplore.exe"
      4⤵
      System Location Discovery: System Language Discovery
      PID:756

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\2.exe

Filesize
476KB

MD5
ee42511075de43ee5be1f719b9d821f3

SHA1
ee98bfb1daca038e3d9be04941f962d1050fc7d9

SHA256
ca408a4f313a8dc8afe42b490e74b345d758bc319c0b5b251f03fed84e8deb0e

SHA512
6709b469d8e8764fc9677bf8ef69c165afce5e6bc8369e19df10a56d1017936622b4d625094e0dd71fbbeabbfccf0b84023d40124f57f211b5e70ed0cbe83884

Download Submit
memory/756-53-0x0000000000A00000-0x0000000000A80000-memory.dmp

Filesize
512KB

Download
memory/756-71-0x0000000000A00000-0x0000000000A80000-memory.dmp

Filesize
512KB

Download
memory/756-51-0x0000000000A00000-0x0000000000A80000-memory.dmp

Filesize
512KB

Download
memory/756-69-0x0000000000A00000-0x0000000000A80000-memory.dmp

Filesize
512KB

Download
memory/756-45-0x0000000000A00000-0x0000000000A80000-memory.dmp

Filesize
512KB

Download
memory/756-46-0x0000000000A00000-0x0000000000A80000-memory.dmp

Filesize
512KB

Download
memory/756-47-0x0000000000A00000-0x0000000000A80000-memory.dmp

Filesize
512KB

Download
memory/756-48-0x0000000000A00000-0x0000000000A80000-memory.dmp

Filesize
512KB

Download
memory/756-67-0x0000000000A00000-0x0000000000A80000-memory.dmp

Filesize
512KB

Download
memory/756-55-0x0000000000A00000-0x0000000000A80000-memory.dmp

Filesize
512KB

Download
memory/756-65-0x0000000000A00000-0x0000000000A80000-memory.dmp

Filesize
512KB

Download
memory/756-64-0x0000000000A00000-0x0000000000A80000-memory.dmp

Filesize
512KB

Download
memory/756-62-0x0000000000A00000-0x0000000000A80000-memory.dmp

Filesize
512KB

Download
memory/756-57-0x0000000000A00000-0x0000000000A80000-memory.dmp

Filesize
512KB

Download
memory/756-59-0x0000000000A00000-0x0000000000A80000-memory.dmp

Filesize
512KB

Download
memory/756-60-0x0000000000A00000-0x0000000000A80000-memory.dmp

Filesize
512KB

Download
memory/756-61-0x0000000000A00000-0x0000000000A80000-memory.dmp

Filesize
512KB

Download
memory/3172-50-0x00000000749F0000-0x00000000751A0000-memory.dmp

Filesize
7.7MB

Download
memory/3172-2-0x0000000004D40000-0x0000000004DA6000-memory.dmp

Filesize
408KB

Download
memory/3172-3-0x00000000749F0000-0x00000000751A0000-memory.dmp

Filesize
7.7MB

Download
memory/3172-49-0x00000000749FE000-0x00000000749FF000-memory.dmp

Filesize
4KB

Download
memory/3172-1-0x00000000002E0000-0x0000000000370000-memory.dmp

Filesize
576KB

Download
memory/3172-0-0x00000000749FE000-0x00000000749FF000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads