remcos | 7423aa8ba840f6ca0d746ef6708363f1a75ced682859a9eb26df5d8faabf5854

Analysis

max time kernel
121s
max time network
123s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
24-09-2024 20:24

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General

Target

SecuriteInfo.com.Win32.Malware-gen.18298.24659.exe
Size

2.7MB
MD5

d1a71a41adffc6131f04ad62bc16866a
SHA1

9e86ce91dc2980308aff3c561eb23620d8a1c274
SHA256

7423aa8ba840f6ca0d746ef6708363f1a75ced682859a9eb26df5d8faabf5854
SHA512

6a34b0cf62f80e6f742e159f03712b3ae52d046ed258dabe1af0dfd8fe62bcc465426b55eaa0fde790c9641d51d8e363d4a05a720a1af4a294f42d33df53c3ae
SSDEEP

49152:XwREDDMKjETTJxiRD+Vw4z0g3QEh1SijB4TPdHeMxWrP+beY7UY714:XwRE1jETTJxiRD+VDzJQEh1Si10PdMwi

Score

10^/10

remcos remotehost discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

remcserver1.mywire.org: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
true
hide_keylog_file
false
install_flag
true
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-Z3AGN8
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

Executes dropped EXE 3 IoCs

pid	Process
2956	SecuriteInfo.com.Win32.Malware-gen.18298.24659.tmp
2128	vucakq.exe
2052	remcos.exe

Loads dropped DLL 3 IoCs

pid	Process
1232	SecuriteInfo.com.Win32.Malware-gen.18298.24659.exe
2956	SecuriteInfo.com.Win32.Malware-gen.18298.24659.tmp
2096	GoogleUpdateCore.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-Z3AGN8 = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	GoogleUpdateCore.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-Z3AGN8 = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	GoogleUpdateCore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\afadkcd = "\"C:\\ggbdfke\\AutoIt3.exe\" C:\\ggbdfke\\afadkcd.a3x"	vucakq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2128 set thread context of 2096	2128	vucakq.exe	32

System Location Discovery: System Language Discovery 1 TTPs 5 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	SecuriteInfo.com.Win32.Malware-gen.18298.24659.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SecuriteInfo.com.Win32.Malware-gen.18298.24659.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vucakq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	GoogleUpdateCore.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	remcos.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	vucakq.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	vucakq.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 1232 wrote to memory of 2956	1232	SecuriteInfo.com.Win32.Malware-gen.18298.24659.exe	30
PID 1232 wrote to memory of 2956	1232	SecuriteInfo.com.Win32.Malware-gen.18298.24659.exe	30
PID 1232 wrote to memory of 2956	1232	SecuriteInfo.com.Win32.Malware-gen.18298.24659.exe	30
PID 1232 wrote to memory of 2956	1232	SecuriteInfo.com.Win32.Malware-gen.18298.24659.exe	30
PID 1232 wrote to memory of 2956	1232	SecuriteInfo.com.Win32.Malware-gen.18298.24659.exe	30
PID 1232 wrote to memory of 2956	1232	SecuriteInfo.com.Win32.Malware-gen.18298.24659.exe	30
PID 1232 wrote to memory of 2956	1232	SecuriteInfo.com.Win32.Malware-gen.18298.24659.exe	30
PID 2956 wrote to memory of 2128	2956	SecuriteInfo.com.Win32.Malware-gen.18298.24659.tmp	31
PID 2956 wrote to memory of 2128	2956	SecuriteInfo.com.Win32.Malware-gen.18298.24659.tmp	31
PID 2956 wrote to memory of 2128	2956	SecuriteInfo.com.Win32.Malware-gen.18298.24659.tmp	31
PID 2956 wrote to memory of 2128	2956	SecuriteInfo.com.Win32.Malware-gen.18298.24659.tmp	31
PID 2128 wrote to memory of 2096	2128	vucakq.exe	32
PID 2128 wrote to memory of 2096	2128	vucakq.exe	32
PID 2128 wrote to memory of 2096	2128	vucakq.exe	32
PID 2128 wrote to memory of 2096	2128	vucakq.exe	32
PID 2128 wrote to memory of 2096	2128	vucakq.exe	32
PID 2128 wrote to memory of 2096	2128	vucakq.exe	32
PID 2128 wrote to memory of 2096	2128	vucakq.exe	32
PID 2128 wrote to memory of 2096	2128	vucakq.exe	32
PID 2128 wrote to memory of 2096	2128	vucakq.exe	32
PID 2096 wrote to memory of 2052	2096	GoogleUpdateCore.exe	33
PID 2096 wrote to memory of 2052	2096	GoogleUpdateCore.exe	33
PID 2096 wrote to memory of 2052	2096	GoogleUpdateCore.exe	33
PID 2096 wrote to memory of 2052	2096	GoogleUpdateCore.exe	33
PID 2096 wrote to memory of 2052	2096	GoogleUpdateCore.exe	33
PID 2096 wrote to memory of 2052	2096	GoogleUpdateCore.exe	33
PID 2096 wrote to memory of 2052	2096	GoogleUpdateCore.exe	33

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.Malware-gen.18298.24659.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.Malware-gen.18298.24659.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1232
- C:\Users\Admin\AppData\Local\Temp\is-U0A0N.tmp\SecuriteInfo.com.Win32.Malware-gen.18298.24659.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-U0A0N.tmp\SecuriteInfo.com.Win32.Malware-gen.18298.24659.tmp" /SL5="$30144,1872046,845824,C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.Malware-gen.18298.24659.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2956
- - C:\Users\Admin\AppData\Local\Temp\is-23VHI.tmp\vucakq.exe
    "C:\Users\Admin\AppData\Local\Temp\is-23VHI.tmp\vucakq.exe" C:\Users\Admin\AppData\Local\Temp\is-23VHI.tmp\script.a3x
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Checks processor information in registry
    - Suspicious use of WriteProcessMemory
    PID:2128
  - - C:\Program Files (x86)\Google\Update\1.3.36.151\GoogleUpdateCore.exe
      "C:\Program Files (x86)\Google\Update\1.3.36.151\GoogleUpdateCore.exe"
      4⤵
      Loads dropped DLL
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2096
    - - C:\ProgramData\Remcos\remcos.exe
        
        "C:\ProgramData\Remcos\remcos.exe"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:2052

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\is-23VHI.tmp\script.a3x

Filesize
654KB

MD5
742a52bfcedea23ed2ede23d0e7a5f7c

SHA1
dcbb13387ca5d6e73df278eee0455f51c1e1ae42

SHA256
2eee2e7fad833ed6297f8d8b28e119466415d702f63d9e52d88d1bbe7ec02811

SHA512
5bf24e9667a767b27a12894023991176dfe383dca9e907ed7f9cafcf236b0d2f70fa9f8d5d4b0505c688cd144f350047d954d459958978b95c323249c2f6738f

Download Submit
\ProgramData\Remcos\remcos.exe

Filesize
224KB

MD5
d4b257c01bbaa68d15d8368475a4e227

SHA1
fafae083a882e163cfa8c77258baaab891c17df2

SHA256
dd6dd981c7f1a6673dc8cc3a0fe1fc8a54e059a9fdb0545b0dc9258299c0c546

SHA512
167494ecb32196e8e199d7d14a1c0498eee45ab8e8862e5441539fa569313bb602b9e979935c7cc5ba39300e54e8bdbdf2f502e4ea24b5e8339fd2c3685ca502

Download Submit
\Users\Admin\AppData\Local\Temp\is-23VHI.tmp\vucakq.exe

Filesize
872KB

MD5
c56b5f0201a3b3de53e561fe76912bfd

SHA1
2a4062e10a5de813f5688221dbeb3f3ff33eb417

SHA256
237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d

SHA512
195b98245bb820085ae9203cdb6d470b749d1f228908093e8606453b027b7d7681ccd7952e30c2f5dd40f8f0b999ccfc60ebb03419b574c08de6816e75710d2c

Download Submit
\Users\Admin\AppData\Local\Temp\is-U0A0N.tmp\SecuriteInfo.com.Win32.Malware-gen.18298.24659.tmp

Filesize
3.2MB

MD5
e587511f17c07622f2e88bde6dc2a499

SHA1
08899e43445db2e0d000b3afd80e028636786eeb

SHA256
9fbf0748b5d890c2c28b1ae20aad7fc23a93cc7a57c4a51220d9381af7637c60

SHA512
2e59d9c525c5383c4ea66c785584aa69256a47ffe928a6595cc2bf07469d2da4dd56dcd3d3d42496e593c39eec6356fc4c8a9cdeee6770c7e6c3319b8b614c6e

Download Submit
memory/1232-2-0x0000000000891000-0x0000000000939000-memory.dmp

Filesize
672KB

Download
memory/1232-36-0x0000000000890000-0x000000000096C000-memory.dmp

Filesize
880KB

Download
memory/1232-0-0x0000000000890000-0x000000000096C000-memory.dmp

Filesize
880KB

Download
memory/1232-30-0x0000000000890000-0x000000000096C000-memory.dmp

Filesize
880KB

Download
memory/2096-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2096-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2956-32-0x0000000000100000-0x0000000000101000-memory.dmp

Filesize
4KB

Download
memory/2956-31-0x00000000001D0000-0x0000000000513000-memory.dmp

Filesize
3.3MB

Download
memory/2956-34-0x00000000001D0000-0x0000000000513000-memory.dmp

Filesize
3.3MB

Download
memory/2956-8-0x0000000000100000-0x0000000000101000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads