modiloader | 5ff39d8a19a5b70f2b1ec392680a242c88579a034fb700dc7d290791a2adea2a

Analysis

max time kernel
158s
max time network
159s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
28/10/2022, 20:53

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General

Target

5ff39d8a19a5b70f2b1ec392680a242c88579a034fb700dc7d290791a2adea2a.exe
Size

132KB
MD5

0e40efbdb53694c93ce3e00586847adf
SHA1

40b4e7eeeed9a11c69f2395ddb9f02e1142f4dda
SHA256

5ff39d8a19a5b70f2b1ec392680a242c88579a034fb700dc7d290791a2adea2a
SHA512

9e89199e58d18a2e4f1f01e85db97d38e9260f68effb4be37c0387e434b7523cc3370a68d4a08760076e5f4063ce95881e572a42806db252634abfcca8f547a6
SSDEEP

3072:bSTCXOLyNuCV00tyV0utobt+Lap5xAl0o:GW+LyYKtyVBtgtEap5xAl

Score

10^/10

modiloader persistence trojan upx

Malware Config

Signatures

ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
trojan modiloader

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = ",C:\\Windows\\RKfhBsClvj.exe"	RKfhBsClvj.exe

ModiLoader Second Stage 3 IoCs

resource	yara_rule
behavioral2/memory/3732-154-0x0000000040010000-0x000000004004B000-memory.dmp	modiloader_stage2
behavioral2/memory/3732-156-0x0000000040010000-0x000000004004B000-memory.dmp	modiloader_stage2
behavioral2/memory/3732-157-0x0000000040010000-0x000000004004B000-memory.dmp	modiloader_stage2

Executes dropped EXE 3 IoCs

pid	Process
3632	RKfhBsClvj.exe
1812	RKfhBsClvj.exe
3732	RKfhBsClvj.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/1812-151-0x0000000040010000-0x000000004004B000-memory.dmp	upx
behavioral2/memory/3732-154-0x0000000040010000-0x000000004004B000-memory.dmp	upx
behavioral2/memory/3732-156-0x0000000040010000-0x000000004004B000-memory.dmp	upx
behavioral2/memory/3732-157-0x0000000040010000-0x000000004004B000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	RKfhBsClvj.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\RKfhBsClvj = "C:\\Windows\\RKfhBsClvj.exe"	RKfhBsClvj.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4996 set thread context of 1544	4996	5ff39d8a19a5b70f2b1ec392680a242c88579a034fb700dc7d290791a2adea2a.exe	80
PID 3632 set thread context of 1812	3632	RKfhBsClvj.exe	82

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\RKfhBsClvj.exe	RKfhBsClvj.exe
File opened for modification	C:\Windows\woooooooooooooox_10092C6B\ServerLogs\Admin\29-10-2022	RKfhBsClvj.exe
File created	C:\Windows\RKfhBsClvj.exe	5ff39d8a19a5b70f2b1ec392680a242c88579a034fb700dc7d290791a2adea2a.exe
File opened for modification	C:\Windows\RKfhBsClvj.exe	5ff39d8a19a5b70f2b1ec392680a242c88579a034fb700dc7d290791a2adea2a.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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	RKfhBsClvj.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	RKfhBsClvj.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3732	RKfhBsClvj.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3732	RKfhBsClvj.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 4996 wrote to memory of 1544	4996	5ff39d8a19a5b70f2b1ec392680a242c88579a034fb700dc7d290791a2adea2a.exe	80
PID 4996 wrote to memory of 1544	4996	5ff39d8a19a5b70f2b1ec392680a242c88579a034fb700dc7d290791a2adea2a.exe	80
PID 4996 wrote to memory of 1544	4996	5ff39d8a19a5b70f2b1ec392680a242c88579a034fb700dc7d290791a2adea2a.exe	80
PID 4996 wrote to memory of 1544	4996	5ff39d8a19a5b70f2b1ec392680a242c88579a034fb700dc7d290791a2adea2a.exe	80
PID 4996 wrote to memory of 1544	4996	5ff39d8a19a5b70f2b1ec392680a242c88579a034fb700dc7d290791a2adea2a.exe	80
PID 4996 wrote to memory of 1544	4996	5ff39d8a19a5b70f2b1ec392680a242c88579a034fb700dc7d290791a2adea2a.exe	80
PID 4996 wrote to memory of 1544	4996	5ff39d8a19a5b70f2b1ec392680a242c88579a034fb700dc7d290791a2adea2a.exe	80
PID 4996 wrote to memory of 1544	4996	5ff39d8a19a5b70f2b1ec392680a242c88579a034fb700dc7d290791a2adea2a.exe	80
PID 4996 wrote to memory of 1544	4996	5ff39d8a19a5b70f2b1ec392680a242c88579a034fb700dc7d290791a2adea2a.exe	80
PID 4996 wrote to memory of 1544	4996	5ff39d8a19a5b70f2b1ec392680a242c88579a034fb700dc7d290791a2adea2a.exe	80
PID 4996 wrote to memory of 1544	4996	5ff39d8a19a5b70f2b1ec392680a242c88579a034fb700dc7d290791a2adea2a.exe	80
PID 4996 wrote to memory of 1544	4996	5ff39d8a19a5b70f2b1ec392680a242c88579a034fb700dc7d290791a2adea2a.exe	80
PID 4996 wrote to memory of 1544	4996	5ff39d8a19a5b70f2b1ec392680a242c88579a034fb700dc7d290791a2adea2a.exe	80
PID 1544 wrote to memory of 3632	1544	5ff39d8a19a5b70f2b1ec392680a242c88579a034fb700dc7d290791a2adea2a.exe	81
PID 1544 wrote to memory of 3632	1544	5ff39d8a19a5b70f2b1ec392680a242c88579a034fb700dc7d290791a2adea2a.exe	81
PID 1544 wrote to memory of 3632	1544	5ff39d8a19a5b70f2b1ec392680a242c88579a034fb700dc7d290791a2adea2a.exe	81
PID 3632 wrote to memory of 1812	3632	RKfhBsClvj.exe	82
PID 3632 wrote to memory of 1812	3632	RKfhBsClvj.exe	82
PID 3632 wrote to memory of 1812	3632	RKfhBsClvj.exe	82
PID 3632 wrote to memory of 1812	3632	RKfhBsClvj.exe	82
PID 3632 wrote to memory of 1812	3632	RKfhBsClvj.exe	82
PID 3632 wrote to memory of 1812	3632	RKfhBsClvj.exe	82
PID 3632 wrote to memory of 1812	3632	RKfhBsClvj.exe	82
PID 3632 wrote to memory of 1812	3632	RKfhBsClvj.exe	82
PID 3632 wrote to memory of 1812	3632	RKfhBsClvj.exe	82
PID 3632 wrote to memory of 1812	3632	RKfhBsClvj.exe	82
PID 3632 wrote to memory of 1812	3632	RKfhBsClvj.exe	82
PID 3632 wrote to memory of 1812	3632	RKfhBsClvj.exe	82
PID 3632 wrote to memory of 1812	3632	RKfhBsClvj.exe	82
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83
PID 1812 wrote to memory of 3732	1812	RKfhBsClvj.exe	83

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1996
- C:\Users\Admin\AppData\Local\Temp\5ff39d8a19a5b70f2b1ec392680a242c88579a034fb700dc7d290791a2adea2a.exe
  "C:\Users\Admin\AppData\Local\Temp\5ff39d8a19a5b70f2b1ec392680a242c88579a034fb700dc7d290791a2adea2a.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:4996
- - C:\Users\Admin\AppData\Local\Temp\5ff39d8a19a5b70f2b1ec392680a242c88579a034fb700dc7d290791a2adea2a.exe
    C:\Users\Admin\AppData\Local\Temp\5ff39d8a19a5b70f2b1ec392680a242c88579a034fb700dc7d290791a2adea2a.exe
    3⤵
    - Drops file in Windows directory
    - Suspicious use of WriteProcessMemory
    PID:1544
  - - C:\Windows\RKfhBsClvj.exe
      -bs
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious use of WriteProcessMemory
      PID:3632
    - - C:\Windows\RKfhBsClvj.exe
        
        C:\Windows\RKfhBsClvj.exe
        5⤵
        Executes dropped EXE
        Drops file in Windows directory
        Suspicious use of WriteProcessMemory
        
        PID:1812
      - C:\Windows\RKfhBsClvj.exe
        
        "C:\Windows\RKfhBsClvj.exe"
        6⤵
        Modifies WinLogon for persistence
        Executes dropped EXE
        Adds Run key to start application
        Drops file in Windows directory
        Checks processor information in registry
        Suspicious behavior: GetForegroundWindowSpam
        Suspicious use of FindShellTrayWindow
        
        PID:3732

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\RKfhBsClvj.exe

Filesize
132KB

MD5
0e40efbdb53694c93ce3e00586847adf

SHA1
40b4e7eeeed9a11c69f2395ddb9f02e1142f4dda

SHA256
5ff39d8a19a5b70f2b1ec392680a242c88579a034fb700dc7d290791a2adea2a

SHA512
9e89199e58d18a2e4f1f01e85db97d38e9260f68effb4be37c0387e434b7523cc3370a68d4a08760076e5f4063ce95881e572a42806db252634abfcca8f547a6

Download Submit
C:\Windows\RKfhBsClvj.exe

Filesize
132KB

MD5
0e40efbdb53694c93ce3e00586847adf

SHA1
40b4e7eeeed9a11c69f2395ddb9f02e1142f4dda

SHA256
5ff39d8a19a5b70f2b1ec392680a242c88579a034fb700dc7d290791a2adea2a

SHA512
9e89199e58d18a2e4f1f01e85db97d38e9260f68effb4be37c0387e434b7523cc3370a68d4a08760076e5f4063ce95881e572a42806db252634abfcca8f547a6

Download Submit
C:\Windows\RKfhBsClvj.exe

Filesize
132KB

MD5
0e40efbdb53694c93ce3e00586847adf

SHA1
40b4e7eeeed9a11c69f2395ddb9f02e1142f4dda

SHA256
5ff39d8a19a5b70f2b1ec392680a242c88579a034fb700dc7d290791a2adea2a

SHA512
9e89199e58d18a2e4f1f01e85db97d38e9260f68effb4be37c0387e434b7523cc3370a68d4a08760076e5f4063ce95881e572a42806db252634abfcca8f547a6

Download Submit
C:\Windows\RKfhBsClvj.exe

Filesize
132KB

MD5
0e40efbdb53694c93ce3e00586847adf

SHA1
40b4e7eeeed9a11c69f2395ddb9f02e1142f4dda

SHA256
5ff39d8a19a5b70f2b1ec392680a242c88579a034fb700dc7d290791a2adea2a

SHA512
9e89199e58d18a2e4f1f01e85db97d38e9260f68effb4be37c0387e434b7523cc3370a68d4a08760076e5f4063ce95881e572a42806db252634abfcca8f547a6

Download Submit
memory/1544-137-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/1544-135-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/1544-136-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/1544-141-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/1544-134-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/1812-151-0x0000000040010000-0x000000004004B000-memory.dmp

Filesize
236KB

Download
memory/1812-150-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/1812-155-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/3732-154-0x0000000040010000-0x000000004004B000-memory.dmp

Filesize
236KB

Download
memory/3732-156-0x0000000040010000-0x000000004004B000-memory.dmp

Filesize
236KB

Download
memory/3732-157-0x0000000040010000-0x000000004004B000-memory.dmp

Filesize
236KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads