modiloader | 45b77bd75d9ad8f632d12df4accb85b618c8da99b3e55468305d3ea9ea372b15

Analysis

max time kernel
118s
max time network
118s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
01-01-2025 13:40

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General

Target

45b77bd75d9ad8f632d12df4accb85b618c8da99b3e55468305d3ea9ea372b15.exe
Size

326KB
MD5

d87f08f5f18a0e14fbc881a34b31b634
SHA1

868f1ac54e456a2d746bcf1fd9f001aa53c4c5ac
SHA256

45b77bd75d9ad8f632d12df4accb85b618c8da99b3e55468305d3ea9ea372b15
SHA512

46f4ce6404c00cc52636614daacce6e21ec884b25f66f2069ed4920497d65c164d55c17aa668179c54ef9756bc7e37a979bc045f3b59a0212230aa25657563b2
SSDEEP

3072:ce2A0wxDqUpM5scww4chO+O1BmP5DG0sg3i4XZ9WvDZHwdRX/L+gP38XVx:csxD5cwohO+O1sVG0/pZ6iPC8g

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/2948-50-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2948-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2948-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2948-59-0x0000000000400000-0x0000000000414000-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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	45b77bd75d9ad8f632d12df4accb85b618c8da99b3e55468305d3ea9ea372b15.exe

Executes dropped EXE 3 IoCs

pid	Process
1288	csrsll.exe
3324	csrsll.exe
2948	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-1-5-21-940901362-3608833189-1915618603-1000\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 392 set thread context of 1692	392	45b77bd75d9ad8f632d12df4accb85b618c8da99b3e55468305d3ea9ea372b15.exe	83
PID 1288 set thread context of 3324	1288	csrsll.exe	90
PID 1288 set thread context of 2948	1288	csrsll.exe	91

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/392-0-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/392-5-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/1692-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1692-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1692-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/392-13-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/files/0x0008000000023cb2-28.dat	upx
behavioral2/memory/1692-38-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1288-39-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/1288-40-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/2948-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2948-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1692-56-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1288-55-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/2948-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2948-49-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2948-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3324-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2948-59-0x0000000000400000-0x0000000000414000-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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	45b77bd75d9ad8f632d12df4accb85b618c8da99b3e55468305d3ea9ea372b15.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	45b77bd75d9ad8f632d12df4accb85b618c8da99b3e55468305d3ea9ea372b15.exe
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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe
Token: SeDebugPrivilege	3324	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
392	45b77bd75d9ad8f632d12df4accb85b618c8da99b3e55468305d3ea9ea372b15.exe
1692	45b77bd75d9ad8f632d12df4accb85b618c8da99b3e55468305d3ea9ea372b15.exe
1288	csrsll.exe
3324	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 392 wrote to memory of 1692	392	45b77bd75d9ad8f632d12df4accb85b618c8da99b3e55468305d3ea9ea372b15.exe	83
PID 392 wrote to memory of 1692	392	45b77bd75d9ad8f632d12df4accb85b618c8da99b3e55468305d3ea9ea372b15.exe	83
PID 392 wrote to memory of 1692	392	45b77bd75d9ad8f632d12df4accb85b618c8da99b3e55468305d3ea9ea372b15.exe	83
PID 392 wrote to memory of 1692	392	45b77bd75d9ad8f632d12df4accb85b618c8da99b3e55468305d3ea9ea372b15.exe	83
PID 392 wrote to memory of 1692	392	45b77bd75d9ad8f632d12df4accb85b618c8da99b3e55468305d3ea9ea372b15.exe	83
PID 392 wrote to memory of 1692	392	45b77bd75d9ad8f632d12df4accb85b618c8da99b3e55468305d3ea9ea372b15.exe	83
PID 392 wrote to memory of 1692	392	45b77bd75d9ad8f632d12df4accb85b618c8da99b3e55468305d3ea9ea372b15.exe	83
PID 392 wrote to memory of 1692	392	45b77bd75d9ad8f632d12df4accb85b618c8da99b3e55468305d3ea9ea372b15.exe	83
PID 1692 wrote to memory of 4188	1692	45b77bd75d9ad8f632d12df4accb85b618c8da99b3e55468305d3ea9ea372b15.exe	84
PID 1692 wrote to memory of 4188	1692	45b77bd75d9ad8f632d12df4accb85b618c8da99b3e55468305d3ea9ea372b15.exe	84
PID 1692 wrote to memory of 4188	1692	45b77bd75d9ad8f632d12df4accb85b618c8da99b3e55468305d3ea9ea372b15.exe	84
PID 4188 wrote to memory of 3056	4188	cmd.exe	88
PID 4188 wrote to memory of 3056	4188	cmd.exe	88
PID 4188 wrote to memory of 3056	4188	cmd.exe	88
PID 1692 wrote to memory of 1288	1692	45b77bd75d9ad8f632d12df4accb85b618c8da99b3e55468305d3ea9ea372b15.exe	89
PID 1692 wrote to memory of 1288	1692	45b77bd75d9ad8f632d12df4accb85b618c8da99b3e55468305d3ea9ea372b15.exe	89
PID 1692 wrote to memory of 1288	1692	45b77bd75d9ad8f632d12df4accb85b618c8da99b3e55468305d3ea9ea372b15.exe	89
PID 1288 wrote to memory of 3324	1288	csrsll.exe	90
PID 1288 wrote to memory of 3324	1288	csrsll.exe	90
PID 1288 wrote to memory of 3324	1288	csrsll.exe	90
PID 1288 wrote to memory of 3324	1288	csrsll.exe	90
PID 1288 wrote to memory of 3324	1288	csrsll.exe	90
PID 1288 wrote to memory of 3324	1288	csrsll.exe	90
PID 1288 wrote to memory of 3324	1288	csrsll.exe	90
PID 1288 wrote to memory of 3324	1288	csrsll.exe	90
PID 1288 wrote to memory of 2948	1288	csrsll.exe	91
PID 1288 wrote to memory of 2948	1288	csrsll.exe	91
PID 1288 wrote to memory of 2948	1288	csrsll.exe	91
PID 1288 wrote to memory of 2948	1288	csrsll.exe	91
PID 1288 wrote to memory of 2948	1288	csrsll.exe	91
PID 1288 wrote to memory of 2948	1288	csrsll.exe	91
PID 1288 wrote to memory of 2948	1288	csrsll.exe	91
PID 1288 wrote to memory of 2948	1288	csrsll.exe	91

C:\Users\Admin\AppData\Local\Temp\45b77bd75d9ad8f632d12df4accb85b618c8da99b3e55468305d3ea9ea372b15.exe
"C:\Users\Admin\AppData\Local\Temp\45b77bd75d9ad8f632d12df4accb85b618c8da99b3e55468305d3ea9ea372b15.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:392
- C:\Users\Admin\AppData\Local\Temp\45b77bd75d9ad8f632d12df4accb85b618c8da99b3e55468305d3ea9ea372b15.exe
  "C:\Users\Admin\AppData\Local\Temp\45b77bd75d9ad8f632d12df4accb85b618c8da99b3e55468305d3ea9ea372b15.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1692
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\DYVUY.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4188
  - - 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:3056
- - 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:1288
  - - 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:3324
  - - 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:2948

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\DYVUY.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
326KB

MD5
c9d8653f78fcb9d96eaaefabdf43e625

SHA1
a9dba848e921df0cc460a62ad03c48c2b8eeebbf

SHA256
0d33e546fc52142aa246a34afd4cb6f4916c356c0982f52815dcc8fc06ac62b6

SHA512
398034e062f7eedc25f93f6332a323ddf56cc9dd6a8baf8c3d9dc8dee2948682e85f8dcc839f1ededf375e651c58c1fd5cd13e871a49ac587b4d07bfce53b60a

Download Submit
memory/392-3-0x0000000002B60000-0x0000000002B62000-memory.dmp

Filesize
8KB

Download
memory/392-4-0x0000000002B70000-0x0000000002B72000-memory.dmp

Filesize
8KB

Download
memory/392-6-0x0000000002B90000-0x0000000002B92000-memory.dmp

Filesize
8KB

Download
memory/392-5-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/392-0-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/392-13-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1288-39-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1288-55-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1288-40-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1692-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1692-38-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1692-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1692-56-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1692-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2948-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2948-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2948-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2948-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2948-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2948-59-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3324-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads