modiloader | d5b873d052413ef11ffcbe21b4537d7c395e7307558a69b32830a2de9208a770

Analysis

max time kernel
119s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
22-01-2025 20:52

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

d5b873d052413ef11ffcbe21b4537d7c395e7307558a69b32830a2de9208a770N.exe
Size

90KB
MD5

a1b78656aa4bac89e28fa6281fe2d7c0
SHA1

a483005b723b10911b2a5abf95810dcda92ad9bd
SHA256

d5b873d052413ef11ffcbe21b4537d7c395e7307558a69b32830a2de9208a770
SHA512

23776f1113b9a8a1daeaf3d432f40330fe121ab379585801cb3abb79a1b1c373932aff56531583aee6a7cc894867443542a9d8aaf9212c970ade7bee9941baa1
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDK:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3Y

Score

10^/10

modiloader discovery persistence trojan upx

Malware Config

Signatures

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

ModiLoader Second Stage 4 IoCs

resource	yara_rule
behavioral2/memory/1040-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1040-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1040-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1040-64-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Checks computer location settings 2 TTPs 1 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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	d5b873d052413ef11ffcbe21b4537d7c395e7307558a69b32830a2de9208a770N.exe

Executes dropped EXE 3 IoCs

pid	Process
2864	csrsll.exe
4720	csrsll.exe
1040	csrsll.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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 968 set thread context of 3128	968	d5b873d052413ef11ffcbe21b4537d7c395e7307558a69b32830a2de9208a770N.exe	84
PID 2864 set thread context of 4720	2864	csrsll.exe	95
PID 2864 set thread context of 1040	2864	csrsll.exe	96

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/968-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/968-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3128-8-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3128-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3128-12-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/968-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000b000000023b6a-30.dat	upx
behavioral2/memory/2864-38-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3128-41-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2864-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1040-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1040-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1040-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1040-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2864-56-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3128-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1040-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2864-43-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4720-63-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1040-64-0x0000000000400000-0x0000000000414000-memory.dmp	upx

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 7 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d5b873d052413ef11ffcbe21b4537d7c395e7307558a69b32830a2de9208a770N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d5b873d052413ef11ffcbe21b4537d7c395e7307558a69b32830a2de9208a770N.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe
Token: SeDebugPrivilege	4720	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
968	d5b873d052413ef11ffcbe21b4537d7c395e7307558a69b32830a2de9208a770N.exe
3128	d5b873d052413ef11ffcbe21b4537d7c395e7307558a69b32830a2de9208a770N.exe
2864	csrsll.exe
4720	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 968 wrote to memory of 3128	968	d5b873d052413ef11ffcbe21b4537d7c395e7307558a69b32830a2de9208a770N.exe	84
PID 968 wrote to memory of 3128	968	d5b873d052413ef11ffcbe21b4537d7c395e7307558a69b32830a2de9208a770N.exe	84
PID 968 wrote to memory of 3128	968	d5b873d052413ef11ffcbe21b4537d7c395e7307558a69b32830a2de9208a770N.exe	84
PID 968 wrote to memory of 3128	968	d5b873d052413ef11ffcbe21b4537d7c395e7307558a69b32830a2de9208a770N.exe	84
PID 968 wrote to memory of 3128	968	d5b873d052413ef11ffcbe21b4537d7c395e7307558a69b32830a2de9208a770N.exe	84
PID 968 wrote to memory of 3128	968	d5b873d052413ef11ffcbe21b4537d7c395e7307558a69b32830a2de9208a770N.exe	84
PID 968 wrote to memory of 3128	968	d5b873d052413ef11ffcbe21b4537d7c395e7307558a69b32830a2de9208a770N.exe	84
PID 968 wrote to memory of 3128	968	d5b873d052413ef11ffcbe21b4537d7c395e7307558a69b32830a2de9208a770N.exe	84
PID 3128 wrote to memory of 1400	3128	d5b873d052413ef11ffcbe21b4537d7c395e7307558a69b32830a2de9208a770N.exe	87
PID 3128 wrote to memory of 1400	3128	d5b873d052413ef11ffcbe21b4537d7c395e7307558a69b32830a2de9208a770N.exe	87
PID 3128 wrote to memory of 1400	3128	d5b873d052413ef11ffcbe21b4537d7c395e7307558a69b32830a2de9208a770N.exe	87
PID 1400 wrote to memory of 1432	1400	cmd.exe	90
PID 1400 wrote to memory of 1432	1400	cmd.exe	90
PID 1400 wrote to memory of 1432	1400	cmd.exe	90
PID 3128 wrote to memory of 2864	3128	d5b873d052413ef11ffcbe21b4537d7c395e7307558a69b32830a2de9208a770N.exe	91
PID 3128 wrote to memory of 2864	3128	d5b873d052413ef11ffcbe21b4537d7c395e7307558a69b32830a2de9208a770N.exe	91
PID 3128 wrote to memory of 2864	3128	d5b873d052413ef11ffcbe21b4537d7c395e7307558a69b32830a2de9208a770N.exe	91
PID 2864 wrote to memory of 4720	2864	csrsll.exe	95
PID 2864 wrote to memory of 4720	2864	csrsll.exe	95
PID 2864 wrote to memory of 4720	2864	csrsll.exe	95
PID 2864 wrote to memory of 4720	2864	csrsll.exe	95
PID 2864 wrote to memory of 4720	2864	csrsll.exe	95
PID 2864 wrote to memory of 4720	2864	csrsll.exe	95
PID 2864 wrote to memory of 4720	2864	csrsll.exe	95
PID 2864 wrote to memory of 4720	2864	csrsll.exe	95
PID 2864 wrote to memory of 1040	2864	csrsll.exe	96
PID 2864 wrote to memory of 1040	2864	csrsll.exe	96
PID 2864 wrote to memory of 1040	2864	csrsll.exe	96
PID 2864 wrote to memory of 1040	2864	csrsll.exe	96
PID 2864 wrote to memory of 1040	2864	csrsll.exe	96
PID 2864 wrote to memory of 1040	2864	csrsll.exe	96
PID 2864 wrote to memory of 1040	2864	csrsll.exe	96
PID 2864 wrote to memory of 1040	2864	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\d5b873d052413ef11ffcbe21b4537d7c395e7307558a69b32830a2de9208a770N.exe
"C:\Users\Admin\AppData\Local\Temp\d5b873d052413ef11ffcbe21b4537d7c395e7307558a69b32830a2de9208a770N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:968
- C:\Users\Admin\AppData\Local\Temp\d5b873d052413ef11ffcbe21b4537d7c395e7307558a69b32830a2de9208a770N.exe
  "C:\Users\Admin\AppData\Local\Temp\d5b873d052413ef11ffcbe21b4537d7c395e7307558a69b32830a2de9208a770N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3128
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\VRFRC.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1400
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Win Pdf" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe" /f
      4⤵
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      PID:1432
- - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2864
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:4720
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:1040

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\VRFRC.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe

Filesize
90KB

MD5
21fd0b6e901a9e875cec21afb7318e33

SHA1
40f79e27694fc0a896853643c8b5d3bc93f5840f

SHA256
92c4a826e02f7194d3a6bff299ed16790ebcaac584eff1085c2bcb83bf921745

SHA512
cc1cc60adad3d6d6037940c5c79bcb4f58649afe1cca96bed89a4ac75a6a2398b94ddc07c12da1551d58cb62b1ec28ba71ec526808d0739be98f7ef4f2914730

Download Submit
memory/968-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/968-4-0x0000000002C80000-0x0000000002C82000-memory.dmp

Filesize
8KB

Download
memory/968-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/968-3-0x0000000002B70000-0x0000000002B72000-memory.dmp

Filesize
8KB

Download
memory/968-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/968-6-0x0000000002CA0000-0x0000000002CA2000-memory.dmp

Filesize
8KB

Download
memory/1040-64-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1040-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1040-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1040-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1040-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1040-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2864-56-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2864-43-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2864-38-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2864-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3128-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3128-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3128-41-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3128-12-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3128-8-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4720-63-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads