modiloader | 4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6

Analysis

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

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
02-01-2025 07:27

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General

Target

4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe
Size

90KB
MD5

4e10a818a9097d1d6f24d08687829afb
SHA1

4cd3260fb0849429343101558503e3d69fda3097
SHA256

4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6
SHA512

909a7d8fba8bcab5d2a6fd885444a3f2a2d09a506993142a9aa09370e01e1bbf1443d5cbcd96b5af82b7ba713b39262080614c111cae2f2b518aa5cf74b4baa6
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDm:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3k

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/1216-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1216-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1216-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1216-62-0x0000000000400000-0x0000000000414000-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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe

Executes dropped EXE 3 IoCs

pid	Process
3716	csrsll.exe
4876	csrsll.exe
1216	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-1-5-21-2045521122-590294423-3465680274-1000\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 3472 set thread context of 4884	3472	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe	84
PID 3716 set thread context of 4876	3716	csrsll.exe	102
PID 3716 set thread context of 1216	3716	csrsll.exe	103

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3472-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3472-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4884-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4884-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4884-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3472-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023c97-29.dat	upx
behavioral2/memory/4884-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3716-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3716-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1216-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1216-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1216-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1216-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3716-55-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1216-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4884-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4876-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1216-62-0x0000000000400000-0x0000000000414000-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	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe
Token: SeDebugPrivilege	4876	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3472	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe
4884	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe
3716	csrsll.exe
4876	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3472 wrote to memory of 4884	3472	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe	84
PID 3472 wrote to memory of 4884	3472	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe	84
PID 3472 wrote to memory of 4884	3472	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe	84
PID 3472 wrote to memory of 4884	3472	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe	84
PID 3472 wrote to memory of 4884	3472	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe	84
PID 3472 wrote to memory of 4884	3472	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe	84
PID 3472 wrote to memory of 4884	3472	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe	84
PID 3472 wrote to memory of 4884	3472	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe	84
PID 4884 wrote to memory of 2472	4884	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe	87
PID 4884 wrote to memory of 2472	4884	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe	87
PID 4884 wrote to memory of 2472	4884	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe	87
PID 2472 wrote to memory of 796	2472	cmd.exe	91
PID 2472 wrote to memory of 796	2472	cmd.exe	91
PID 2472 wrote to memory of 796	2472	cmd.exe	91
PID 4884 wrote to memory of 3716	4884	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe	92
PID 4884 wrote to memory of 3716	4884	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe	92
PID 4884 wrote to memory of 3716	4884	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe	92
PID 3716 wrote to memory of 4876	3716	csrsll.exe	102
PID 3716 wrote to memory of 4876	3716	csrsll.exe	102
PID 3716 wrote to memory of 4876	3716	csrsll.exe	102
PID 3716 wrote to memory of 4876	3716	csrsll.exe	102
PID 3716 wrote to memory of 4876	3716	csrsll.exe	102
PID 3716 wrote to memory of 4876	3716	csrsll.exe	102
PID 3716 wrote to memory of 4876	3716	csrsll.exe	102
PID 3716 wrote to memory of 4876	3716	csrsll.exe	102
PID 3716 wrote to memory of 1216	3716	csrsll.exe	103
PID 3716 wrote to memory of 1216	3716	csrsll.exe	103
PID 3716 wrote to memory of 1216	3716	csrsll.exe	103
PID 3716 wrote to memory of 1216	3716	csrsll.exe	103
PID 3716 wrote to memory of 1216	3716	csrsll.exe	103
PID 3716 wrote to memory of 1216	3716	csrsll.exe	103
PID 3716 wrote to memory of 1216	3716	csrsll.exe	103
PID 3716 wrote to memory of 1216	3716	csrsll.exe	103

C:\Users\Admin\AppData\Local\Temp\4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe
"C:\Users\Admin\AppData\Local\Temp\4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3472
- C:\Users\Admin\AppData\Local\Temp\4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe
  "C:\Users\Admin\AppData\Local\Temp\4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4884
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\NDRNL.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2472
  - - 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:796
- - 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:3716
  - - 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:4876
  - - 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:1216

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\NDRNL.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
dbf5ff69b9dd618157d4169d9418dace

SHA1
5e51ee40ba2cdbead9400cceecb930d1452f4f31

SHA256
0eff41a68089c040d65f7c02233ee0ea57fefaa2aaafc84408ff14bfc86a03c7

SHA512
69187008933043086bbcbcf09e9d6d1b5082387ad96f961bf97fd83c0b147cf1f58fa8383c94544619140e85a0abef0f6711ad730153d22a9b9f30000c4e234b

Download Submit
memory/1216-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1216-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1216-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1216-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1216-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1216-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3472-5-0x0000000002C80000-0x0000000002C82000-memory.dmp

Filesize
8KB

Download
memory/3472-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3472-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3472-3-0x0000000002B50000-0x0000000002B52000-memory.dmp

Filesize
8KB

Download
memory/3472-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3472-6-0x0000000002C90000-0x0000000002C92000-memory.dmp

Filesize
8KB

Download
memory/3716-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3716-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3716-55-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4876-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4884-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4884-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4884-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4884-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4884-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads