remcos | 57fc9b56b7887f6e0fd20e60199d0123db28f2051abfabf7b924298c276cdf91

Analysis

max time kernel
120s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
06-09-2024 16:29

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General

Target

IT Gadget_RFQ.exe
Size

975KB
MD5

826b3ba76c427c9ddc756b6c84cd39f5
SHA1

dd47f1472496c0137c5ba9f03bf6e8d55158f651
SHA256

c6b113d59ce488200203bb30c67ed4b9ae483eb398b0e6cfa69357e3e20bc051
SHA512

6a15c01ac8e3acec2e596cf384e7c2f60676e7a3fa82b40bb397c9d6d05ab8c49895753ea7f1cb4d2fb1c72e036ea5415668d482e8e908b35351d957aa1391c8
SSDEEP

24576:OUobyWLfvFCY7BgbOtAmAGXB+PcU0LNlL:XgLfvIEBgDmAG2cvPL

Score

10^/10

remcos discovery execution rat

Malware Config

Signatures

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

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2400	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2424 set thread context of 2500	2424	IT Gadget_RFQ.exe	36

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2872	2500	WerFault.exe	36

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	IT Gadget_RFQ.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	IT Gadget_RFQ.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2740	schtasks.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2424	IT Gadget_RFQ.exe
2424	IT Gadget_RFQ.exe
2424	IT Gadget_RFQ.exe
2424	IT Gadget_RFQ.exe
2424	IT Gadget_RFQ.exe
2424	IT Gadget_RFQ.exe
2424	IT Gadget_RFQ.exe
2424	IT Gadget_RFQ.exe
2424	IT Gadget_RFQ.exe
2400	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2424	IT Gadget_RFQ.exe
Token: SeDebugPrivilege	2400	powershell.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 2424 wrote to memory of 2400	2424	IT Gadget_RFQ.exe	31
PID 2424 wrote to memory of 2400	2424	IT Gadget_RFQ.exe	31
PID 2424 wrote to memory of 2400	2424	IT Gadget_RFQ.exe	31
PID 2424 wrote to memory of 2400	2424	IT Gadget_RFQ.exe	31
PID 2424 wrote to memory of 2740	2424	IT Gadget_RFQ.exe	32
PID 2424 wrote to memory of 2740	2424	IT Gadget_RFQ.exe	32
PID 2424 wrote to memory of 2740	2424	IT Gadget_RFQ.exe	32
PID 2424 wrote to memory of 2740	2424	IT Gadget_RFQ.exe	32
PID 2424 wrote to memory of 2768	2424	IT Gadget_RFQ.exe	35
PID 2424 wrote to memory of 2768	2424	IT Gadget_RFQ.exe	35
PID 2424 wrote to memory of 2768	2424	IT Gadget_RFQ.exe	35
PID 2424 wrote to memory of 2768	2424	IT Gadget_RFQ.exe	35
PID 2424 wrote to memory of 2500	2424	IT Gadget_RFQ.exe	36
PID 2424 wrote to memory of 2500	2424	IT Gadget_RFQ.exe	36
PID 2424 wrote to memory of 2500	2424	IT Gadget_RFQ.exe	36
PID 2424 wrote to memory of 2500	2424	IT Gadget_RFQ.exe	36
PID 2424 wrote to memory of 2500	2424	IT Gadget_RFQ.exe	36
PID 2424 wrote to memory of 2500	2424	IT Gadget_RFQ.exe	36
PID 2424 wrote to memory of 2500	2424	IT Gadget_RFQ.exe	36
PID 2424 wrote to memory of 2500	2424	IT Gadget_RFQ.exe	36
PID 2424 wrote to memory of 2500	2424	IT Gadget_RFQ.exe	36
PID 2424 wrote to memory of 2500	2424	IT Gadget_RFQ.exe	36
PID 2424 wrote to memory of 2500	2424	IT Gadget_RFQ.exe	36
PID 2424 wrote to memory of 2500	2424	IT Gadget_RFQ.exe	36
PID 2424 wrote to memory of 2500	2424	IT Gadget_RFQ.exe	36
PID 2500 wrote to memory of 2872	2500	IT Gadget_RFQ.exe	37
PID 2500 wrote to memory of 2872	2500	IT Gadget_RFQ.exe	37
PID 2500 wrote to memory of 2872	2500	IT Gadget_RFQ.exe	37
PID 2500 wrote to memory of 2872	2500	IT Gadget_RFQ.exe	37

C:\Users\Admin\AppData\Local\Temp\IT Gadget_RFQ.exe
"C:\Users\Admin\AppData\Local\Temp\IT Gadget_RFQ.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2424
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\yBciedAUQyWGH.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2400
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\yBciedAUQyWGH" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1F82.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2740
- C:\Users\Admin\AppData\Local\Temp\IT Gadget_RFQ.exe
  "C:\Users\Admin\AppData\Local\Temp\IT Gadget_RFQ.exe"
  2⤵
  PID:2768
- C:\Users\Admin\AppData\Local\Temp\IT Gadget_RFQ.exe
  "C:\Users\Admin\AppData\Local\Temp\IT Gadget_RFQ.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2500
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2500 -s 200
    3⤵
    - Program crash
    PID:2872

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp1F82.tmp

Filesize
1KB

MD5
fc47f1b74d1c158a70c1b173eea56049

SHA1
8d848f18f087ab2ba1441a5ea01c1c18331b825e

SHA256
049d7b4a877ecec28a7dfe88f70e7a01456b8c1ea44485e41347b7bb519374bf

SHA512
297391184e461789c3f759e346f726557f2f4e288f11353974e4da5033ae70fafd1784adde9ff44f570f256f206a714b6cb408ea2c5f08cb8f9a7d3a074b47e6

Download Submit
memory/2424-0-0x00000000746CE000-0x00000000746CF000-memory.dmp

Filesize
4KB

Download
memory/2424-1-0x0000000000C80000-0x0000000000D7A000-memory.dmp

Filesize
1000KB

Download
memory/2424-2-0x00000000746C0000-0x0000000074DAE000-memory.dmp

Filesize
6.9MB

Download
memory/2424-3-0x00000000003F0000-0x0000000000408000-memory.dmp

Filesize
96KB

Download
memory/2424-4-0x00000000746CE000-0x00000000746CF000-memory.dmp

Filesize
4KB

Download
memory/2424-5-0x00000000746C0000-0x0000000074DAE000-memory.dmp

Filesize
6.9MB

Download
memory/2424-6-0x0000000004FC0000-0x0000000005080000-memory.dmp

Filesize
768KB

Download
memory/2424-33-0x00000000746C0000-0x0000000074DAE000-memory.dmp

Filesize
6.9MB

Download
memory/2500-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2500-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2500-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2500-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2500-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2500-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2500-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2500-17-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2500-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2500-30-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2500-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download